/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/acceleratedInterpolationQvasr_64.epf -i ../../../trunk/examples/svcomp/ntdrivers-simplified/floppy_simpl3.cil-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-34549b5 [2022-04-07 00:44:11,029 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-07 00:44:11,030 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-07 00:44:11,155 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-04-07 00:44:11,161 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-04-07 00:44:11,161 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-04-07 00:44:11,162 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-04-07 00:44:11,162 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-04-07 00:44:11,163 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-04-07 00:44:11,163 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-04-07 00:44:11,164 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-04-07 00:44:11,165 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-04-07 00:44:11,166 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-04-07 00:44:11,167 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-04-07 00:44:11,167 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-04-07 00:44:11,168 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-04-07 00:44:11,169 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-04-07 00:44:11,170 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-04-07 00:44:11,175 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-07 00:44:11,176 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-07 00:44:11,176 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-07 00:44:11,177 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationQvasr_64.epf [2022-04-07 00:44:11,183 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-07 00:44:11,183 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-07 00:44:11,184 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-07 00:44:11,184 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-07 00:44:11,184 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-07 00:44:11,185 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-07 00:44:11,185 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-07 00:44:11,185 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-07 00:44:11,185 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-07 00:44:11,185 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-07 00:44:11,185 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-07 00:44:11,185 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-07 00:44:11,185 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-04-07 00:44:11,185 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-04-07 00:44:11,185 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-07 00:44:11,186 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-07 00:44:11,186 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-07 00:44:11,186 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2022-04-07 00:44:11,186 INFO L138 SettingsManager]: * Trace refinement strategy=ACCELERATED_INTERPOLATION [2022-04-07 00:44:11,186 INFO L138 SettingsManager]: * Trace refinement strategy used in Accelerated Interpolation=CAMEL [2022-04-07 00:44:11,186 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-04-07 00:44:11,186 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=QVASR [2022-04-07 00:44:11,186 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-04-07 00:44:11,325 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-07 00:44:11,346 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-07 00:44:11,348 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-07 00:44:11,349 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-07 00:44:11,349 INFO L275 PluginConnector]: CDTParser initialized [2022-04-07 00:44:11,350 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ntdrivers-simplified/floppy_simpl3.cil-1.c [2022-04-07 00:44:11,388 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eb6b370bc/54d393a564a841c1936af1fcc524c432/FLAG0e7c1fd37 [2022-04-07 00:44:11,967 INFO L306 CDTParser]: Found 1 translation units. [2022-04-07 00:44:11,967 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ntdrivers-simplified/floppy_simpl3.cil-1.c [2022-04-07 00:44:11,976 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eb6b370bc/54d393a564a841c1936af1fcc524c432/FLAG0e7c1fd37 [2022-04-07 00:44:12,396 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eb6b370bc/54d393a564a841c1936af1fcc524c432 [2022-04-07 00:44:12,398 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-07 00:44:12,401 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-04-07 00:44:12,402 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-07 00:44:12,402 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-07 00:44:12,412 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-07 00:44:12,412 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.04 12:44:12" (1/1) ... [2022-04-07 00:44:12,413 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f724f06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.04 12:44:12, skipping insertion in model container [2022-04-07 00:44:12,413 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.04 12:44:12" (1/1) ... [2022-04-07 00:44:12,434 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-07 00:44:12,501 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-07 00:44:12,762 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/floppy_simpl3.cil-1.c[2713,2726] [2022-04-07 00:44:12,906 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-07 00:44:12,915 INFO L203 MainTranslator]: Completed pre-run [2022-04-07 00:44:12,946 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/floppy_simpl3.cil-1.c[2713,2726] [2022-04-07 00:44:13,006 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-07 00:44:13,020 INFO L208 MainTranslator]: Completed translation [2022-04-07 00:44:13,020 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.04 12:44:13 WrapperNode [2022-04-07 00:44:13,020 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-07 00:44:13,021 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-07 00:44:13,021 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-07 00:44:13,021 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-07 00:44:13,028 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.04 12:44:13" (1/1) ... [2022-04-07 00:44:13,028 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.04 12:44:13" (1/1) ... [2022-04-07 00:44:13,049 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.04 12:44:13" (1/1) ... [2022-04-07 00:44:13,049 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.04 12:44:13" (1/1) ... [2022-04-07 00:44:13,075 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.04 12:44:13" (1/1) ... [2022-04-07 00:44:13,082 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.04 12:44:13" (1/1) ... [2022-04-07 00:44:13,094 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.04 12:44:13" (1/1) ... [2022-04-07 00:44:13,098 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-07 00:44:13,098 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-07 00:44:13,098 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-07 00:44:13,098 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-07 00:44:13,105 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.04 12:44:13" (1/1) ... [2022-04-07 00:44:13,109 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-07 00:44:13,116 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-07 00:44:13,169 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) [2022-04-07 00:44:13,181 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 [2022-04-07 00:44:13,216 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-04-07 00:44:13,216 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-07 00:44:13,219 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-04-07 00:44:13,220 INFO L138 BoogieDeclarations]: Found implementation of procedure errorFn [2022-04-07 00:44:13,220 INFO L138 BoogieDeclarations]: Found implementation of procedure _BLAST_init [2022-04-07 00:44:13,220 INFO L138 BoogieDeclarations]: Found implementation of procedure FlAcpiConfigureFloppy [2022-04-07 00:44:13,220 INFO L138 BoogieDeclarations]: Found implementation of procedure FlQueueIrpToThread [2022-04-07 00:44:13,220 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyPnp [2022-04-07 00:44:13,220 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyStartDevice [2022-04-07 00:44:13,220 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyPnpComplete [2022-04-07 00:44:13,221 INFO L138 BoogieDeclarations]: Found implementation of procedure FlFdcDeviceIo [2022-04-07 00:44:13,221 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyProcessQueuedRequests [2022-04-07 00:44:13,221 INFO L138 BoogieDeclarations]: Found implementation of procedure stub_driver_init [2022-04-07 00:44:13,221 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-04-07 00:44:13,222 INFO L138 BoogieDeclarations]: Found implementation of procedure IoBuildDeviceIoControlRequest [2022-04-07 00:44:13,223 INFO L138 BoogieDeclarations]: Found implementation of procedure IoDeleteSymbolicLink [2022-04-07 00:44:13,223 INFO L138 BoogieDeclarations]: Found implementation of procedure IoQueryDeviceDescription [2022-04-07 00:44:13,223 INFO L138 BoogieDeclarations]: Found implementation of procedure IoRegisterDeviceInterface [2022-04-07 00:44:13,223 INFO L138 BoogieDeclarations]: Found implementation of procedure IoSetDeviceInterfaceState [2022-04-07 00:44:13,223 INFO L138 BoogieDeclarations]: Found implementation of procedure stubMoreProcessingRequired [2022-04-07 00:44:13,223 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCallDriver [2022-04-07 00:44:13,224 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCompleteRequest [2022-04-07 00:44:13,224 INFO L138 BoogieDeclarations]: Found implementation of procedure KeSetEvent [2022-04-07 00:44:13,224 INFO L138 BoogieDeclarations]: Found implementation of procedure KeWaitForSingleObject [2022-04-07 00:44:13,224 INFO L138 BoogieDeclarations]: Found implementation of procedure ObReferenceObjectByHandle [2022-04-07 00:44:13,224 INFO L138 BoogieDeclarations]: Found implementation of procedure PsCreateSystemThread [2022-04-07 00:44:13,224 INFO L138 BoogieDeclarations]: Found implementation of procedure ZwClose [2022-04-07 00:44:13,224 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-04-07 00:44:13,224 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-04-07 00:44:13,224 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-04-07 00:44:13,224 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-07 00:44:13,224 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2022-04-07 00:44:13,224 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-04-07 00:44:13,224 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2022-04-07 00:44:13,224 INFO L130 BoogieDeclarations]: Found specification of procedure FlAcpiConfigureFloppy [2022-04-07 00:44:13,224 INFO L130 BoogieDeclarations]: Found specification of procedure FlQueueIrpToThread [2022-04-07 00:44:13,225 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyPnp [2022-04-07 00:44:13,225 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyStartDevice [2022-04-07 00:44:13,225 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyPnpComplete [2022-04-07 00:44:13,225 INFO L130 BoogieDeclarations]: Found specification of procedure FlFdcDeviceIo [2022-04-07 00:44:13,225 INFO L130 BoogieDeclarations]: Found specification of procedure IoBuildDeviceIoControlRequest [2022-04-07 00:44:13,225 INFO L130 BoogieDeclarations]: Found specification of procedure IoDeleteSymbolicLink [2022-04-07 00:44:13,225 INFO L130 BoogieDeclarations]: Found specification of procedure IoQueryDeviceDescription [2022-04-07 00:44:13,225 INFO L130 BoogieDeclarations]: Found specification of procedure IoRegisterDeviceInterface [2022-04-07 00:44:13,225 INFO L130 BoogieDeclarations]: Found specification of procedure IoSetDeviceInterfaceState [2022-04-07 00:44:13,225 INFO L130 BoogieDeclarations]: Found specification of procedure IofCallDriver [2022-04-07 00:44:13,225 INFO L130 BoogieDeclarations]: Found specification of procedure KeSetEvent [2022-04-07 00:44:13,225 INFO L130 BoogieDeclarations]: Found specification of procedure KeWaitForSingleObject [2022-04-07 00:44:13,225 INFO L130 BoogieDeclarations]: Found specification of procedure ObReferenceObjectByHandle [2022-04-07 00:44:13,225 INFO L130 BoogieDeclarations]: Found specification of procedure PsCreateSystemThread [2022-04-07 00:44:13,225 INFO L130 BoogieDeclarations]: Found specification of procedure ZwClose [2022-04-07 00:44:13,226 INFO L130 BoogieDeclarations]: Found specification of procedure IofCompleteRequest [2022-04-07 00:44:13,226 INFO L130 BoogieDeclarations]: Found specification of procedure errorFn [2022-04-07 00:44:13,226 INFO L130 BoogieDeclarations]: Found specification of procedure _BLAST_init [2022-04-07 00:44:13,226 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyProcessQueuedRequests [2022-04-07 00:44:13,226 INFO L130 BoogieDeclarations]: Found specification of procedure stub_driver_init [2022-04-07 00:44:13,226 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-04-07 00:44:13,226 INFO L130 BoogieDeclarations]: Found specification of procedure stubMoreProcessingRequired [2022-04-07 00:44:13,226 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-04-07 00:44:13,226 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-07 00:44:13,226 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-07 00:44:13,226 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-07 00:44:13,226 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-04-07 00:44:13,226 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-07 00:44:13,437 INFO L234 CfgBuilder]: Building ICFG [2022-04-07 00:44:13,438 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-07 00:44:13,453 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-07 00:44:13,487 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-04-07 00:44:13,488 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-04-07 00:44:13,493 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-07 00:44:13,498 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-04-07 00:44:13,499 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-04-07 00:44:13,502 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-07 00:44:13,687 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##21: assume !false; [2022-04-07 00:44:13,687 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##20: assume false; [2022-04-07 00:44:13,688 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-07 00:44:13,790 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##10: assume false; [2022-04-07 00:44:13,790 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume !false; [2022-04-07 00:44:13,797 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-07 00:44:13,814 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##16: assume !false; [2022-04-07 00:44:13,814 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume false; [2022-04-07 00:44:13,892 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-07 00:44:13,896 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-04-07 00:44:13,896 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-04-07 00:44:13,896 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-07 00:44:13,900 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-04-07 00:44:13,901 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-04-07 00:44:13,901 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-07 00:44:13,906 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-04-07 00:44:13,906 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-04-07 00:44:13,941 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-07 00:44:13,964 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##12: assume !false; [2022-04-07 00:44:13,965 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume false; [2022-04-07 00:44:13,996 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-07 00:44:14,000 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-04-07 00:44:14,000 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-04-07 00:44:14,001 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-07 00:44:14,008 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-04-07 00:44:14,009 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-04-07 00:44:14,009 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-07 00:44:14,012 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-04-07 00:44:14,013 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-04-07 00:44:14,020 INFO L275 CfgBuilder]: Performing block encoding [2022-04-07 00:44:14,027 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-07 00:44:14,027 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-04-07 00:44:14,029 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.04 12:44:14 BoogieIcfgContainer [2022-04-07 00:44:14,029 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-07 00:44:14,030 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-07 00:44:14,030 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-07 00:44:14,041 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-07 00:44:14,041 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.04 12:44:12" (1/3) ... [2022-04-07 00:44:14,041 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57ce4d9c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.04 12:44:14, skipping insertion in model container [2022-04-07 00:44:14,042 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.04 12:44:13" (2/3) ... [2022-04-07 00:44:14,042 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57ce4d9c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.04 12:44:14, skipping insertion in model container [2022-04-07 00:44:14,042 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.04 12:44:14" (3/3) ... [2022-04-07 00:44:14,043 INFO L111 eAbstractionObserver]: Analyzing ICFG floppy_simpl3.cil-1.c [2022-04-07 00:44:14,046 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-04-07 00:44:14,046 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-04-07 00:44:14,086 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-07 00:44:14,129 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 [2022-04-07 00:44:14,130 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-04-07 00:44:14,165 INFO L276 IsEmpty]: Start isEmpty. Operand has 302 states, 219 states have (on average 1.4246575342465753) internal successors, (312), 242 states have internal predecessors, (312), 57 states have call successors, (57), 24 states have call predecessors, (57), 24 states have return successors, (57), 51 states have call predecessors, (57), 57 states have call successors, (57) [2022-04-07 00:44:14,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-04-07 00:44:14,174 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 00:44:14,174 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-07 00:44:14,175 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 00:44:14,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 00:44:14,187 INFO L85 PathProgramCache]: Analyzing trace with hash -1062088937, now seen corresponding path program 1 times [2022-04-07 00:44:14,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 00:44:14,194 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1033134958] [2022-04-07 00:44:14,215 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-07 00:44:14,215 INFO L85 PathProgramCache]: Analyzing trace with hash -1062088937, now seen corresponding path program 2 times [2022-04-07 00:44:14,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 00:44:14,217 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022503793] [2022-04-07 00:44:14,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 00:44:14,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 00:44:14,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:14,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 00:44:14,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:14,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-07 00:44:14,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:14,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 00:44:14,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 00:44:14,710 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022503793] [2022-04-07 00:44:14,711 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1022503793] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:44:14,711 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:44:14,711 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-07 00:44:14,713 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 00:44:14,713 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1033134958] [2022-04-07 00:44:14,713 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1033134958] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:44:14,713 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:44:14,713 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-07 00:44:14,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013368511] [2022-04-07 00:44:14,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 00:44:14,716 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-04-07 00:44:14,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 00:44:14,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-04-07 00:44:14,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-04-07 00:44:14,739 INFO L87 Difference]: Start difference. First operand has 302 states, 219 states have (on average 1.4246575342465753) internal successors, (312), 242 states have internal predecessors, (312), 57 states have call successors, (57), 24 states have call predecessors, (57), 24 states have return successors, (57), 51 states have call predecessors, (57), 57 states have call successors, (57) 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) [2022-04-07 00:44:16,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 00:44:16,237 INFO L93 Difference]: Finished difference Result 539 states and 782 transitions. [2022-04-07 00:44:16,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-04-07 00:44:16,239 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 [2022-04-07 00:44:16,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 00:44:16,269 INFO L225 Difference]: With dead ends: 539 [2022-04-07 00:44:16,270 INFO L226 Difference]: Without dead ends: 324 [2022-04-07 00:44:16,276 INFO L912 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 [2022-04-07 00:44:16,291 INFO L913 BasicCegarLoop]: 366 mSDtfsCounter, 154 mSDsluCounter, 209 mSDsCounter, 0 mSdLazyCounter, 772 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 575 SdHoareTripleChecker+Invalid, 839 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 772 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-04-07 00:44:16,293 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [159 Valid, 575 Invalid, 839 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 772 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-04-07 00:44:16,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2022-04-07 00:44:16,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 294. [2022-04-07 00:44:16,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 294 states, 214 states have (on average 1.3738317757009346) internal successors, (294), 235 states have internal predecessors, (294), 57 states have call successors, (57), 24 states have call predecessors, (57), 22 states have return successors, (37), 36 states have call predecessors, (37), 37 states have call successors, (37) [2022-04-07 00:44:16,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 388 transitions. [2022-04-07 00:44:16,375 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 388 transitions. Word has length 20 [2022-04-07 00:44:16,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 00:44:16,375 INFO L478 AbstractCegarLoop]: Abstraction has 294 states and 388 transitions. [2022-04-07 00:44:16,375 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) [2022-04-07 00:44:16,375 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 388 transitions. [2022-04-07 00:44:16,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-04-07 00:44:16,377 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 00:44:16,377 INFO L499 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] [2022-04-07 00:44:16,377 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-04-07 00:44:16,377 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 00:44:16,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 00:44:16,378 INFO L85 PathProgramCache]: Analyzing trace with hash 1342963223, now seen corresponding path program 1 times [2022-04-07 00:44:16,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 00:44:16,378 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1151132088] [2022-04-07 00:44:16,378 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-07 00:44:16,379 INFO L85 PathProgramCache]: Analyzing trace with hash 1342963223, now seen corresponding path program 2 times [2022-04-07 00:44:16,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 00:44:16,379 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99490370] [2022-04-07 00:44:16,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 00:44:16,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 00:44:16,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:16,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 00:44:16,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:16,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-07 00:44:16,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:16,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-07 00:44:16,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:16,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 00:44:16,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 00:44:16,595 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99490370] [2022-04-07 00:44:16,595 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [99490370] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:44:16,596 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:44:16,596 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-04-07 00:44:16,596 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 00:44:16,596 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1151132088] [2022-04-07 00:44:16,611 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1151132088] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:44:16,611 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:44:16,611 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-04-07 00:44:16,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788045932] [2022-04-07 00:44:16,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 00:44:16,612 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-07 00:44:16,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 00:44:16,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-07 00:44:16,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-04-07 00:44:16,613 INFO L87 Difference]: Start difference. First operand 294 states and 388 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) [2022-04-07 00:44:17,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 00:44:17,972 INFO L93 Difference]: Finished difference Result 643 states and 865 transitions. [2022-04-07 00:44:17,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-07 00:44:17,973 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 [2022-04-07 00:44:17,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 00:44:17,979 INFO L225 Difference]: With dead ends: 643 [2022-04-07 00:44:17,979 INFO L226 Difference]: Without dead ends: 480 [2022-04-07 00:44:17,980 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-04-07 00:44:17,981 INFO L913 BasicCegarLoop]: 510 mSDtfsCounter, 552 mSDsluCounter, 243 mSDsCounter, 0 mSdLazyCounter, 862 mSolverCounterSat, 158 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 558 SdHoareTripleChecker+Valid, 753 SdHoareTripleChecker+Invalid, 1020 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 158 IncrementalHoareTripleChecker+Valid, 862 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-04-07 00:44:17,982 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [558 Valid, 753 Invalid, 1020 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [158 Valid, 862 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-04-07 00:44:17,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 480 states. [2022-04-07 00:44:18,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 480 to 431. [2022-04-07 00:44:18,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 431 states, 329 states have (on average 1.3161094224924013) internal successors, (433), 336 states have internal predecessors, (433), 66 states have call successors, (66), 37 states have call predecessors, (66), 35 states have return successors, (74), 59 states have call predecessors, (74), 54 states have call successors, (74) [2022-04-07 00:44:18,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 431 states to 431 states and 573 transitions. [2022-04-07 00:44:18,083 INFO L78 Accepts]: Start accepts. Automaton has 431 states and 573 transitions. Word has length 28 [2022-04-07 00:44:18,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 00:44:18,083 INFO L478 AbstractCegarLoop]: Abstraction has 431 states and 573 transitions. [2022-04-07 00:44:18,083 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) [2022-04-07 00:44:18,084 INFO L276 IsEmpty]: Start isEmpty. Operand 431 states and 573 transitions. [2022-04-07 00:44:18,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-04-07 00:44:18,091 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 00:44:18,091 INFO L499 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] [2022-04-07 00:44:18,092 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-04-07 00:44:18,092 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 00:44:18,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 00:44:18,092 INFO L85 PathProgramCache]: Analyzing trace with hash 2077310213, now seen corresponding path program 1 times [2022-04-07 00:44:18,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 00:44:18,092 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1892378] [2022-04-07 00:44:18,093 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-07 00:44:18,093 INFO L85 PathProgramCache]: Analyzing trace with hash 2077310213, now seen corresponding path program 2 times [2022-04-07 00:44:18,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 00:44:18,093 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725859852] [2022-04-07 00:44:18,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 00:44:18,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 00:44:18,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:18,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 00:44:18,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:18,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-07 00:44:18,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:18,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-07 00:44:18,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:18,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 00:44:18,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 00:44:18,284 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725859852] [2022-04-07 00:44:18,284 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1725859852] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:44:18,284 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:44:18,284 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-04-07 00:44:18,284 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 00:44:18,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1892378] [2022-04-07 00:44:18,285 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1892378] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:44:18,285 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:44:18,287 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-04-07 00:44:18,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319443208] [2022-04-07 00:44:18,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 00:44:18,291 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-07 00:44:18,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 00:44:18,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-07 00:44:18,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-04-07 00:44:18,292 INFO L87 Difference]: Start difference. First operand 431 states and 573 transitions. Second operand has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 3 states have internal predecessors, (20), 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) [2022-04-07 00:44:19,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 00:44:19,442 INFO L93 Difference]: Finished difference Result 949 states and 1266 transitions. [2022-04-07 00:44:19,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-07 00:44:19,444 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 3 states have internal predecessors, (20), 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 30 [2022-04-07 00:44:19,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 00:44:19,447 INFO L225 Difference]: With dead ends: 949 [2022-04-07 00:44:19,447 INFO L226 Difference]: Without dead ends: 679 [2022-04-07 00:44:19,448 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-04-07 00:44:19,448 INFO L913 BasicCegarLoop]: 352 mSDtfsCounter, 475 mSDsluCounter, 216 mSDsCounter, 0 mSdLazyCounter, 820 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 482 SdHoareTripleChecker+Valid, 568 SdHoareTripleChecker+Invalid, 935 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 820 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-04-07 00:44:19,449 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [482 Valid, 568 Invalid, 935 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 820 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-04-07 00:44:19,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 679 states. [2022-04-07 00:44:19,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 679 to 634. [2022-04-07 00:44:19,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 634 states, 494 states have (on average 1.3157894736842106) internal successors, (650), 499 states have internal predecessors, (650), 86 states have call successors, (86), 55 states have call predecessors, (86), 53 states have return successors, (112), 81 states have call predecessors, (112), 76 states have call successors, (112) [2022-04-07 00:44:19,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 634 states to 634 states and 848 transitions. [2022-04-07 00:44:19,488 INFO L78 Accepts]: Start accepts. Automaton has 634 states and 848 transitions. Word has length 30 [2022-04-07 00:44:19,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 00:44:19,488 INFO L478 AbstractCegarLoop]: Abstraction has 634 states and 848 transitions. [2022-04-07 00:44:19,488 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 3 states have internal predecessors, (20), 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) [2022-04-07 00:44:19,489 INFO L276 IsEmpty]: Start isEmpty. Operand 634 states and 848 transitions. [2022-04-07 00:44:19,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-04-07 00:44:19,489 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 00:44:19,489 INFO L499 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] [2022-04-07 00:44:19,490 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-04-07 00:44:19,490 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 00:44:19,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 00:44:19,490 INFO L85 PathProgramCache]: Analyzing trace with hash 219422801, now seen corresponding path program 1 times [2022-04-07 00:44:19,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 00:44:19,490 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1926359962] [2022-04-07 00:44:19,491 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-07 00:44:19,491 INFO L85 PathProgramCache]: Analyzing trace with hash 219422801, now seen corresponding path program 2 times [2022-04-07 00:44:19,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 00:44:19,491 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573639716] [2022-04-07 00:44:19,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 00:44:19,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 00:44:19,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:19,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 00:44:19,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:19,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-07 00:44:19,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:19,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-07 00:44:19,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:19,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 00:44:19,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 00:44:19,602 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573639716] [2022-04-07 00:44:19,602 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1573639716] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:44:19,602 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:44:19,602 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-04-07 00:44:19,603 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 00:44:19,603 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1926359962] [2022-04-07 00:44:19,603 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1926359962] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:44:19,603 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:44:19,603 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-04-07 00:44:19,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440154264] [2022-04-07 00:44:19,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 00:44:19,603 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-07 00:44:19,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 00:44:19,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-07 00:44:19,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-04-07 00:44:19,604 INFO L87 Difference]: Start difference. First operand 634 states and 848 transitions. Second operand has 6 states, 6 states have (on average 4.0) internal successors, (24), 3 states have internal predecessors, (24), 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) [2022-04-07 00:44:20,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 00:44:20,572 INFO L93 Difference]: Finished difference Result 743 states and 986 transitions. [2022-04-07 00:44:20,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-07 00:44:20,575 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 3 states have internal predecessors, (24), 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 34 [2022-04-07 00:44:20,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 00:44:20,582 INFO L225 Difference]: With dead ends: 743 [2022-04-07 00:44:20,582 INFO L226 Difference]: Without dead ends: 723 [2022-04-07 00:44:20,584 INFO L912 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 [2022-04-07 00:44:20,585 INFO L913 BasicCegarLoop]: 328 mSDtfsCounter, 474 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 749 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 481 SdHoareTripleChecker+Valid, 451 SdHoareTripleChecker+Invalid, 852 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 749 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-04-07 00:44:20,586 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [481 Valid, 451 Invalid, 852 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 749 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-04-07 00:44:20,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 723 states. [2022-04-07 00:44:20,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 723 to 678. [2022-04-07 00:44:20,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 678 states, 532 states have (on average 1.3195488721804511) internal successors, (702), 543 states have internal predecessors, (702), 87 states have call successors, (87), 57 states have call predecessors, (87), 58 states have return successors, (117), 80 states have call predecessors, (117), 78 states have call successors, (117) [2022-04-07 00:44:20,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 678 states to 678 states and 906 transitions. [2022-04-07 00:44:20,639 INFO L78 Accepts]: Start accepts. Automaton has 678 states and 906 transitions. Word has length 34 [2022-04-07 00:44:20,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 00:44:20,639 INFO L478 AbstractCegarLoop]: Abstraction has 678 states and 906 transitions. [2022-04-07 00:44:20,640 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 3 states have internal predecessors, (24), 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) [2022-04-07 00:44:20,640 INFO L276 IsEmpty]: Start isEmpty. Operand 678 states and 906 transitions. [2022-04-07 00:44:20,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-04-07 00:44:20,647 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 00:44:20,647 INFO L499 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] [2022-04-07 00:44:20,647 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-04-07 00:44:20,647 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 00:44:20,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 00:44:20,647 INFO L85 PathProgramCache]: Analyzing trace with hash -465049067, now seen corresponding path program 1 times [2022-04-07 00:44:20,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 00:44:20,648 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [808047916] [2022-04-07 00:44:20,648 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-07 00:44:20,648 INFO L85 PathProgramCache]: Analyzing trace with hash -465049067, now seen corresponding path program 2 times [2022-04-07 00:44:20,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 00:44:20,648 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2004151609] [2022-04-07 00:44:20,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 00:44:20,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 00:44:20,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:20,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 00:44:20,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:20,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-07 00:44:20,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:20,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-07 00:44:20,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:20,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-04-07 00:44:20,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:20,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 00:44:20,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 00:44:20,834 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2004151609] [2022-04-07 00:44:20,835 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2004151609] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:44:20,835 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:44:20,835 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-04-07 00:44:20,835 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 00:44:20,835 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [808047916] [2022-04-07 00:44:20,835 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [808047916] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:44:20,835 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:44:20,835 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-04-07 00:44:20,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222659821] [2022-04-07 00:44:20,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 00:44:20,836 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-04-07 00:44:20,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 00:44:20,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-04-07 00:44:20,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-04-07 00:44:20,836 INFO L87 Difference]: Start difference. First operand 678 states and 906 transitions. Second operand has 9 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (8), 6 states have call predecessors, (8), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-04-07 00:44:22,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 00:44:22,151 INFO L93 Difference]: Finished difference Result 771 states and 1021 transitions. [2022-04-07 00:44:22,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-04-07 00:44:22,152 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (8), 6 states have call predecessors, (8), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 41 [2022-04-07 00:44:22,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 00:44:22,155 INFO L225 Difference]: With dead ends: 771 [2022-04-07 00:44:22,155 INFO L226 Difference]: Without dead ends: 704 [2022-04-07 00:44:22,155 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2022-04-07 00:44:22,156 INFO L913 BasicCegarLoop]: 324 mSDtfsCounter, 384 mSDsluCounter, 427 mSDsCounter, 0 mSdLazyCounter, 1394 mSolverCounterSat, 161 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 398 SdHoareTripleChecker+Valid, 751 SdHoareTripleChecker+Invalid, 1555 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 161 IncrementalHoareTripleChecker+Valid, 1394 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-04-07 00:44:22,156 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [398 Valid, 751 Invalid, 1555 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [161 Valid, 1394 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-04-07 00:44:22,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 704 states. [2022-04-07 00:44:22,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 704 to 682. [2022-04-07 00:44:22,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 682 states, 535 states have (on average 1.3177570093457944) internal successors, (705), 546 states have internal predecessors, (705), 87 states have call successors, (87), 57 states have call predecessors, (87), 59 states have return successors, (118), 81 states have call predecessors, (118), 78 states have call successors, (118) [2022-04-07 00:44:22,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 682 states to 682 states and 910 transitions. [2022-04-07 00:44:22,204 INFO L78 Accepts]: Start accepts. Automaton has 682 states and 910 transitions. Word has length 41 [2022-04-07 00:44:22,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 00:44:22,206 INFO L478 AbstractCegarLoop]: Abstraction has 682 states and 910 transitions. [2022-04-07 00:44:22,206 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (8), 6 states have call predecessors, (8), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-04-07 00:44:22,206 INFO L276 IsEmpty]: Start isEmpty. Operand 682 states and 910 transitions. [2022-04-07 00:44:22,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-04-07 00:44:22,207 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 00:44:22,207 INFO L499 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] [2022-04-07 00:44:22,207 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-04-07 00:44:22,208 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 00:44:22,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 00:44:22,208 INFO L85 PathProgramCache]: Analyzing trace with hash -1071240601, now seen corresponding path program 1 times [2022-04-07 00:44:22,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 00:44:22,208 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1520459854] [2022-04-07 00:44:22,208 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-07 00:44:22,208 INFO L85 PathProgramCache]: Analyzing trace with hash -1071240601, now seen corresponding path program 2 times [2022-04-07 00:44:22,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 00:44:22,209 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697233261] [2022-04-07 00:44:22,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 00:44:22,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 00:44:22,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:22,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 00:44:22,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:22,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-07 00:44:22,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:22,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-07 00:44:22,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:22,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 00:44:22,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 00:44:22,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697233261] [2022-04-07 00:44:22,350 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [697233261] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:44:22,351 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:44:22,351 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-04-07 00:44:22,351 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 00:44:22,351 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1520459854] [2022-04-07 00:44:22,351 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1520459854] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:44:22,351 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:44:22,351 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-04-07 00:44:22,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170909222] [2022-04-07 00:44:22,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 00:44:22,352 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-07 00:44:22,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 00:44:22,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-07 00:44:22,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-04-07 00:44:22,353 INFO L87 Difference]: Start difference. First operand 682 states and 910 transitions. Second operand has 6 states, 6 states have (on average 5.0) internal successors, (30), 3 states have internal predecessors, (30), 3 states have call successors, (7), 6 states have call predecessors, (7), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-04-07 00:44:23,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 00:44:23,880 INFO L93 Difference]: Finished difference Result 709 states and 944 transitions. [2022-04-07 00:44:23,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-07 00:44:23,880 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.0) internal successors, (30), 3 states have internal predecessors, (30), 3 states have call successors, (7), 6 states have call predecessors, (7), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 40 [2022-04-07 00:44:23,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 00:44:23,883 INFO L225 Difference]: With dead ends: 709 [2022-04-07 00:44:23,884 INFO L226 Difference]: Without dead ends: 706 [2022-04-07 00:44:23,884 INFO L912 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 [2022-04-07 00:44:23,885 INFO L913 BasicCegarLoop]: 345 mSDtfsCounter, 167 mSDsluCounter, 234 mSDsCounter, 0 mSdLazyCounter, 868 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 579 SdHoareTripleChecker+Invalid, 926 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 868 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-04-07 00:44:23,885 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [170 Valid, 579 Invalid, 926 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 868 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-04-07 00:44:23,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 706 states. [2022-04-07 00:44:24,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 706 to 693. [2022-04-07 00:44:24,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 693 states, 546 states have (on average 1.3168498168498168) internal successors, (719), 556 states have internal predecessors, (719), 87 states have call successors, (87), 58 states have call predecessors, (87), 59 states have return successors, (118), 81 states have call predecessors, (118), 78 states have call successors, (118) [2022-04-07 00:44:24,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 693 states to 693 states and 924 transitions. [2022-04-07 00:44:24,054 INFO L78 Accepts]: Start accepts. Automaton has 693 states and 924 transitions. Word has length 40 [2022-04-07 00:44:24,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 00:44:24,055 INFO L478 AbstractCegarLoop]: Abstraction has 693 states and 924 transitions. [2022-04-07 00:44:24,055 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.0) internal successors, (30), 3 states have internal predecessors, (30), 3 states have call successors, (7), 6 states have call predecessors, (7), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-04-07 00:44:24,055 INFO L276 IsEmpty]: Start isEmpty. Operand 693 states and 924 transitions. [2022-04-07 00:44:24,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-04-07 00:44:24,055 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 00:44:24,056 INFO L499 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] [2022-04-07 00:44:24,056 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-04-07 00:44:24,056 INFO L403 AbstractCegarLoop]: === Iteration 7 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 00:44:24,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 00:44:24,056 INFO L85 PathProgramCache]: Analyzing trace with hash -852493695, now seen corresponding path program 1 times [2022-04-07 00:44:24,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 00:44:24,056 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [489635710] [2022-04-07 00:44:24,057 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-07 00:44:24,057 INFO L85 PathProgramCache]: Analyzing trace with hash -852493695, now seen corresponding path program 2 times [2022-04-07 00:44:24,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 00:44:24,057 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957292778] [2022-04-07 00:44:24,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 00:44:24,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 00:44:24,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:24,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 00:44:24,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:24,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-07 00:44:24,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:24,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-07 00:44:24,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:24,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-07 00:44:24,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:24,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-07 00:44:24,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:24,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 00:44:24,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 00:44:24,241 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957292778] [2022-04-07 00:44:24,241 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [957292778] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:44:24,241 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:44:24,241 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-04-07 00:44:24,241 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 00:44:24,242 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [489635710] [2022-04-07 00:44:24,242 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [489635710] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:44:24,242 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:44:24,242 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-04-07 00:44:24,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618777950] [2022-04-07 00:44:24,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 00:44:24,242 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-04-07 00:44:24,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 00:44:24,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-04-07 00:44:24,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-04-07 00:44:24,243 INFO L87 Difference]: Start difference. First operand 693 states and 924 transitions. Second operand has 8 states, 8 states have (on average 3.625) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (7), 7 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2022-04-07 00:44:24,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 00:44:24,861 INFO L93 Difference]: Finished difference Result 768 states and 1018 transitions. [2022-04-07 00:44:24,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-04-07 00:44:24,862 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.625) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (7), 7 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) Word has length 41 [2022-04-07 00:44:24,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 00:44:24,866 INFO L225 Difference]: With dead ends: 768 [2022-04-07 00:44:24,866 INFO L226 Difference]: Without dead ends: 763 [2022-04-07 00:44:24,867 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2022-04-07 00:44:24,867 INFO L913 BasicCegarLoop]: 333 mSDtfsCounter, 425 mSDsluCounter, 340 mSDsCounter, 0 mSdLazyCounter, 612 mSolverCounterSat, 167 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 428 SdHoareTripleChecker+Valid, 673 SdHoareTripleChecker+Invalid, 779 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 167 IncrementalHoareTripleChecker+Valid, 612 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-04-07 00:44:24,868 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [428 Valid, 673 Invalid, 779 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [167 Valid, 612 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-04-07 00:44:24,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 763 states. [2022-04-07 00:44:24,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 763 to 732. [2022-04-07 00:44:24,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 732 states, 579 states have (on average 1.31433506044905) internal successors, (761), 592 states have internal predecessors, (761), 87 states have call successors, (87), 58 states have call predecessors, (87), 65 states have return successors, (124), 83 states have call predecessors, (124), 78 states have call successors, (124) [2022-04-07 00:44:24,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 732 states to 732 states and 972 transitions. [2022-04-07 00:44:24,943 INFO L78 Accepts]: Start accepts. Automaton has 732 states and 972 transitions. Word has length 41 [2022-04-07 00:44:24,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 00:44:24,945 INFO L478 AbstractCegarLoop]: Abstraction has 732 states and 972 transitions. [2022-04-07 00:44:24,945 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.625) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (7), 7 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2022-04-07 00:44:24,945 INFO L276 IsEmpty]: Start isEmpty. Operand 732 states and 972 transitions. [2022-04-07 00:44:24,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-04-07 00:44:24,946 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 00:44:24,946 INFO L499 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] [2022-04-07 00:44:24,947 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-04-07 00:44:24,947 INFO L403 AbstractCegarLoop]: === Iteration 8 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 00:44:24,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 00:44:24,947 INFO L85 PathProgramCache]: Analyzing trace with hash -204665957, now seen corresponding path program 1 times [2022-04-07 00:44:24,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 00:44:24,947 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [911571613] [2022-04-07 00:44:24,947 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-07 00:44:24,948 INFO L85 PathProgramCache]: Analyzing trace with hash -204665957, now seen corresponding path program 2 times [2022-04-07 00:44:24,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 00:44:24,948 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217743223] [2022-04-07 00:44:24,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 00:44:24,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 00:44:24,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:25,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 00:44:25,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:25,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-07 00:44:25,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:25,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-07 00:44:25,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:25,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-07 00:44:25,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:25,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-07 00:44:25,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:25,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 00:44:25,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 00:44:25,174 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217743223] [2022-04-07 00:44:25,174 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1217743223] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:44:25,175 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:44:25,175 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-04-07 00:44:25,175 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 00:44:25,175 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [911571613] [2022-04-07 00:44:25,175 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [911571613] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:44:25,175 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:44:25,175 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-04-07 00:44:25,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777692105] [2022-04-07 00:44:25,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 00:44:25,176 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-04-07 00:44:25,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 00:44:25,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-04-07 00:44:25,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2022-04-07 00:44:25,177 INFO L87 Difference]: Start difference. First operand 732 states and 972 transitions. Second operand has 12 states, 12 states have (on average 2.5) internal successors, (30), 7 states have internal predecessors, (30), 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) [2022-04-07 00:44:26,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 00:44:26,228 INFO L93 Difference]: Finished difference Result 772 states and 1020 transitions. [2022-04-07 00:44:26,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-04-07 00:44:26,229 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.5) internal successors, (30), 7 states have internal predecessors, (30), 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 42 [2022-04-07 00:44:26,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 00:44:26,232 INFO L225 Difference]: With dead ends: 772 [2022-04-07 00:44:26,232 INFO L226 Difference]: Without dead ends: 763 [2022-04-07 00:44:26,233 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2022-04-07 00:44:26,233 INFO L913 BasicCegarLoop]: 316 mSDtfsCounter, 765 mSDsluCounter, 523 mSDsCounter, 0 mSdLazyCounter, 1191 mSolverCounterSat, 206 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 775 SdHoareTripleChecker+Valid, 839 SdHoareTripleChecker+Invalid, 1397 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 206 IncrementalHoareTripleChecker+Valid, 1191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-04-07 00:44:26,233 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [775 Valid, 839 Invalid, 1397 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [206 Valid, 1191 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-04-07 00:44:26,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 763 states. [2022-04-07 00:44:26,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 763 to 732. [2022-04-07 00:44:26,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 732 states, 579 states have (on average 1.310880829015544) internal successors, (759), 592 states have internal predecessors, (759), 87 states have call successors, (87), 58 states have call predecessors, (87), 65 states have return successors, (124), 83 states have call predecessors, (124), 78 states have call successors, (124) [2022-04-07 00:44:26,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 732 states to 732 states and 970 transitions. [2022-04-07 00:44:26,326 INFO L78 Accepts]: Start accepts. Automaton has 732 states and 970 transitions. Word has length 42 [2022-04-07 00:44:26,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 00:44:26,326 INFO L478 AbstractCegarLoop]: Abstraction has 732 states and 970 transitions. [2022-04-07 00:44:26,326 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.5) internal successors, (30), 7 states have internal predecessors, (30), 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) [2022-04-07 00:44:26,326 INFO L276 IsEmpty]: Start isEmpty. Operand 732 states and 970 transitions. [2022-04-07 00:44:26,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-04-07 00:44:26,327 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 00:44:26,327 INFO L499 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] [2022-04-07 00:44:26,327 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-04-07 00:44:26,327 INFO L403 AbstractCegarLoop]: === Iteration 9 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 00:44:26,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 00:44:26,328 INFO L85 PathProgramCache]: Analyzing trace with hash 1356271149, now seen corresponding path program 1 times [2022-04-07 00:44:26,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 00:44:26,328 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1130916343] [2022-04-07 00:44:26,328 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-07 00:44:26,328 INFO L85 PathProgramCache]: Analyzing trace with hash 1356271149, now seen corresponding path program 2 times [2022-04-07 00:44:26,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 00:44:26,329 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530480813] [2022-04-07 00:44:26,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 00:44:26,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 00:44:26,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:26,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 00:44:26,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:26,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-07 00:44:26,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:26,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-07 00:44:26,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:26,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-07 00:44:26,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:26,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-07 00:44:26,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:26,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 00:44:26,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 00:44:26,538 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530480813] [2022-04-07 00:44:26,538 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1530480813] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:44:26,538 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:44:26,538 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-04-07 00:44:26,538 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 00:44:26,539 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1130916343] [2022-04-07 00:44:26,539 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1130916343] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:44:26,539 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:44:26,539 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-04-07 00:44:26,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996962714] [2022-04-07 00:44:26,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 00:44:26,539 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-04-07 00:44:26,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 00:44:26,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-04-07 00:44:26,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2022-04-07 00:44:26,540 INFO L87 Difference]: Start difference. First operand 732 states and 970 transitions. Second operand has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 7 states have internal predecessors, (31), 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) [2022-04-07 00:44:27,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 00:44:27,677 INFO L93 Difference]: Finished difference Result 772 states and 1018 transitions. [2022-04-07 00:44:27,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-04-07 00:44:27,678 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 7 states have internal predecessors, (31), 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 43 [2022-04-07 00:44:27,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 00:44:27,681 INFO L225 Difference]: With dead ends: 772 [2022-04-07 00:44:27,681 INFO L226 Difference]: Without dead ends: 763 [2022-04-07 00:44:27,682 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2022-04-07 00:44:27,683 INFO L913 BasicCegarLoop]: 317 mSDtfsCounter, 884 mSDsluCounter, 416 mSDsCounter, 0 mSdLazyCounter, 884 mSolverCounterSat, 292 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 894 SdHoareTripleChecker+Valid, 733 SdHoareTripleChecker+Invalid, 1176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 292 IncrementalHoareTripleChecker+Valid, 884 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-04-07 00:44:27,683 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [894 Valid, 733 Invalid, 1176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [292 Valid, 884 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-04-07 00:44:27,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 763 states. [2022-04-07 00:44:27,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 763 to 732. [2022-04-07 00:44:27,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 732 states, 579 states have (on average 1.307426597582038) internal successors, (757), 592 states have internal predecessors, (757), 87 states have call successors, (87), 58 states have call predecessors, (87), 65 states have return successors, (124), 83 states have call predecessors, (124), 78 states have call successors, (124) [2022-04-07 00:44:27,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 732 states to 732 states and 968 transitions. [2022-04-07 00:44:27,807 INFO L78 Accepts]: Start accepts. Automaton has 732 states and 968 transitions. Word has length 43 [2022-04-07 00:44:27,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 00:44:27,807 INFO L478 AbstractCegarLoop]: Abstraction has 732 states and 968 transitions. [2022-04-07 00:44:27,807 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 7 states have internal predecessors, (31), 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) [2022-04-07 00:44:27,807 INFO L276 IsEmpty]: Start isEmpty. Operand 732 states and 968 transitions. [2022-04-07 00:44:27,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-04-07 00:44:27,808 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 00:44:27,808 INFO L499 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] [2022-04-07 00:44:27,808 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-04-07 00:44:27,808 INFO L403 AbstractCegarLoop]: === Iteration 10 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 00:44:27,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 00:44:27,809 INFO L85 PathProgramCache]: Analyzing trace with hash -80599750, now seen corresponding path program 1 times [2022-04-07 00:44:27,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 00:44:27,809 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1845543385] [2022-04-07 00:44:27,811 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-07 00:44:27,811 INFO L85 PathProgramCache]: Analyzing trace with hash -80599750, now seen corresponding path program 2 times [2022-04-07 00:44:27,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 00:44:27,811 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105846955] [2022-04-07 00:44:27,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 00:44:27,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 00:44:27,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:27,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 00:44:27,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:27,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-07 00:44:27,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:27,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-07 00:44:27,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:27,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-04-07 00:44:27,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:27,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 00:44:27,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 00:44:27,945 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105846955] [2022-04-07 00:44:27,946 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [105846955] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:44:27,946 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:44:27,946 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-04-07 00:44:27,946 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 00:44:27,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1845543385] [2022-04-07 00:44:27,946 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1845543385] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:44:27,946 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:44:27,946 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-04-07 00:44:27,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101644836] [2022-04-07 00:44:27,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 00:44:27,947 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-04-07 00:44:27,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 00:44:27,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-04-07 00:44:27,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-04-07 00:44:27,947 INFO L87 Difference]: Start difference. First operand 732 states and 968 transitions. Second operand has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (8), 6 states have call predecessors, (8), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-04-07 00:44:29,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 00:44:29,012 INFO L93 Difference]: Finished difference Result 1109 states and 1486 transitions. [2022-04-07 00:44:29,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-04-07 00:44:29,012 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (8), 6 states have call predecessors, (8), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 44 [2022-04-07 00:44:29,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 00:44:29,017 INFO L225 Difference]: With dead ends: 1109 [2022-04-07 00:44:29,017 INFO L226 Difference]: Without dead ends: 1106 [2022-04-07 00:44:29,019 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-04-07 00:44:29,019 INFO L913 BasicCegarLoop]: 440 mSDtfsCounter, 520 mSDsluCounter, 223 mSDsCounter, 0 mSdLazyCounter, 1078 mSolverCounterSat, 198 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 533 SdHoareTripleChecker+Valid, 663 SdHoareTripleChecker+Invalid, 1276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 198 IncrementalHoareTripleChecker+Valid, 1078 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-04-07 00:44:29,020 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [533 Valid, 663 Invalid, 1276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [198 Valid, 1078 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-04-07 00:44:29,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1106 states. [2022-04-07 00:44:29,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1106 to 845. [2022-04-07 00:44:29,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 845 states, 670 states have (on average 1.3149253731343284) internal successors, (881), 685 states have internal predecessors, (881), 97 states have call successors, (97), 68 states have call predecessors, (97), 77 states have return successors, (144), 93 states have call predecessors, (144), 88 states have call successors, (144) [2022-04-07 00:44:29,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 845 states to 845 states and 1122 transitions. [2022-04-07 00:44:29,140 INFO L78 Accepts]: Start accepts. Automaton has 845 states and 1122 transitions. Word has length 44 [2022-04-07 00:44:29,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 00:44:29,140 INFO L478 AbstractCegarLoop]: Abstraction has 845 states and 1122 transitions. [2022-04-07 00:44:29,141 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (8), 6 states have call predecessors, (8), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-04-07 00:44:29,141 INFO L276 IsEmpty]: Start isEmpty. Operand 845 states and 1122 transitions. [2022-04-07 00:44:29,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-04-07 00:44:29,141 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 00:44:29,141 INFO L499 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] [2022-04-07 00:44:29,142 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-04-07 00:44:29,142 INFO L403 AbstractCegarLoop]: === Iteration 11 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 00:44:29,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 00:44:29,142 INFO L85 PathProgramCache]: Analyzing trace with hash -850118780, now seen corresponding path program 1 times [2022-04-07 00:44:29,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 00:44:29,142 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1245755933] [2022-04-07 00:44:29,143 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-07 00:44:29,143 INFO L85 PathProgramCache]: Analyzing trace with hash -850118780, now seen corresponding path program 2 times [2022-04-07 00:44:29,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 00:44:29,143 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371886448] [2022-04-07 00:44:29,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 00:44:29,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 00:44:29,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:29,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 00:44:29,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:29,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-07 00:44:29,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:29,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-07 00:44:29,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:29,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-07 00:44:29,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:29,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-07 00:44:29,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:29,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 00:44:29,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 00:44:29,295 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [371886448] [2022-04-07 00:44:29,295 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [371886448] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:44:29,295 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:44:29,295 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-04-07 00:44:29,295 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 00:44:29,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1245755933] [2022-04-07 00:44:29,296 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1245755933] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:44:29,296 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:44:29,296 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-04-07 00:44:29,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371533021] [2022-04-07 00:44:29,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 00:44:29,296 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-04-07 00:44:29,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 00:44:29,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-04-07 00:44:29,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-04-07 00:44:29,297 INFO L87 Difference]: Start difference. First operand 845 states and 1122 transitions. Second operand has 10 states, 10 states have (on average 3.2) internal successors, (32), 4 states have internal predecessors, (32), 2 states have call successors, (7), 7 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2022-04-07 00:44:30,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 00:44:30,133 INFO L93 Difference]: Finished difference Result 888 states and 1173 transitions. [2022-04-07 00:44:30,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-04-07 00:44:30,133 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.2) internal successors, (32), 4 states have internal predecessors, (32), 2 states have call successors, (7), 7 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) Word has length 44 [2022-04-07 00:44:30,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 00:44:30,137 INFO L225 Difference]: With dead ends: 888 [2022-04-07 00:44:30,137 INFO L226 Difference]: Without dead ends: 870 [2022-04-07 00:44:30,137 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-04-07 00:44:30,138 INFO L913 BasicCegarLoop]: 343 mSDtfsCounter, 340 mSDsluCounter, 746 mSDsCounter, 0 mSdLazyCounter, 1209 mSolverCounterSat, 151 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 343 SdHoareTripleChecker+Valid, 1089 SdHoareTripleChecker+Invalid, 1360 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 151 IncrementalHoareTripleChecker+Valid, 1209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-04-07 00:44:30,138 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [343 Valid, 1089 Invalid, 1360 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [151 Valid, 1209 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-04-07 00:44:30,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 870 states. [2022-04-07 00:44:30,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 870 to 843. [2022-04-07 00:44:30,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 843 states, 669 states have (on average 1.3139013452914798) internal successors, (879), 684 states have internal predecessors, (879), 96 states have call successors, (96), 68 states have call predecessors, (96), 77 states have return successors, (143), 92 states have call predecessors, (143), 87 states have call successors, (143) [2022-04-07 00:44:30,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 843 states to 843 states and 1118 transitions. [2022-04-07 00:44:30,217 INFO L78 Accepts]: Start accepts. Automaton has 843 states and 1118 transitions. Word has length 44 [2022-04-07 00:44:30,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 00:44:30,217 INFO L478 AbstractCegarLoop]: Abstraction has 843 states and 1118 transitions. [2022-04-07 00:44:30,217 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.2) internal successors, (32), 4 states have internal predecessors, (32), 2 states have call successors, (7), 7 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2022-04-07 00:44:30,218 INFO L276 IsEmpty]: Start isEmpty. Operand 843 states and 1118 transitions. [2022-04-07 00:44:30,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-04-07 00:44:30,219 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 00:44:30,219 INFO L499 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] [2022-04-07 00:44:30,219 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-04-07 00:44:30,219 INFO L403 AbstractCegarLoop]: === Iteration 12 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 00:44:30,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 00:44:30,219 INFO L85 PathProgramCache]: Analyzing trace with hash 1558546133, now seen corresponding path program 1 times [2022-04-07 00:44:30,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 00:44:30,219 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [149575182] [2022-04-07 00:44:30,220 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-07 00:44:30,220 INFO L85 PathProgramCache]: Analyzing trace with hash 1558546133, now seen corresponding path program 2 times [2022-04-07 00:44:30,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 00:44:30,220 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105858753] [2022-04-07 00:44:30,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 00:44:30,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 00:44:30,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:30,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 00:44:30,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:30,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-07 00:44:30,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:30,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-07 00:44:30,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:30,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-04-07 00:44:30,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:30,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 00:44:30,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 00:44:30,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105858753] [2022-04-07 00:44:30,480 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2105858753] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:44:30,480 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:44:30,480 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-04-07 00:44:30,480 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 00:44:30,480 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [149575182] [2022-04-07 00:44:30,480 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [149575182] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:44:30,480 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:44:30,480 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-04-07 00:44:30,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676177547] [2022-04-07 00:44:30,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 00:44:30,481 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-04-07 00:44:30,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 00:44:30,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-04-07 00:44:30,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-04-07 00:44:30,481 INFO L87 Difference]: Start difference. First operand 843 states and 1118 transitions. Second operand has 10 states, 10 states have (on average 3.3) internal successors, (33), 6 states have internal predecessors, (33), 4 states have call successors, (8), 7 states have call predecessors, (8), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-04-07 00:44:32,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 00:44:32,150 INFO L93 Difference]: Finished difference Result 1459 states and 1911 transitions. [2022-04-07 00:44:32,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-04-07 00:44:32,151 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.3) internal successors, (33), 6 states have internal predecessors, (33), 4 states have call successors, (8), 7 states have call predecessors, (8), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 45 [2022-04-07 00:44:32,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 00:44:32,154 INFO L225 Difference]: With dead ends: 1459 [2022-04-07 00:44:32,154 INFO L226 Difference]: Without dead ends: 897 [2022-04-07 00:44:32,156 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=84, Invalid=188, Unknown=0, NotChecked=0, Total=272 [2022-04-07 00:44:32,156 INFO L913 BasicCegarLoop]: 456 mSDtfsCounter, 1120 mSDsluCounter, 259 mSDsCounter, 0 mSdLazyCounter, 1652 mSolverCounterSat, 419 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1132 SdHoareTripleChecker+Valid, 715 SdHoareTripleChecker+Invalid, 2071 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 419 IncrementalHoareTripleChecker+Valid, 1652 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-04-07 00:44:32,156 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1132 Valid, 715 Invalid, 2071 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [419 Valid, 1652 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-04-07 00:44:32,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 897 states. [2022-04-07 00:44:32,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 897 to 834. [2022-04-07 00:44:32,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 834 states, 660 states have (on average 1.3) internal successors, (858), 675 states have internal predecessors, (858), 96 states have call successors, (96), 68 states have call predecessors, (96), 77 states have return successors, (143), 92 states have call predecessors, (143), 87 states have call successors, (143) [2022-04-07 00:44:32,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 834 states to 834 states and 1097 transitions. [2022-04-07 00:44:32,240 INFO L78 Accepts]: Start accepts. Automaton has 834 states and 1097 transitions. Word has length 45 [2022-04-07 00:44:32,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 00:44:32,240 INFO L478 AbstractCegarLoop]: Abstraction has 834 states and 1097 transitions. [2022-04-07 00:44:32,240 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.3) internal successors, (33), 6 states have internal predecessors, (33), 4 states have call successors, (8), 7 states have call predecessors, (8), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-04-07 00:44:32,240 INFO L276 IsEmpty]: Start isEmpty. Operand 834 states and 1097 transitions. [2022-04-07 00:44:32,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-04-07 00:44:32,241 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 00:44:32,241 INFO L499 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] [2022-04-07 00:44:32,241 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-04-07 00:44:32,241 INFO L403 AbstractCegarLoop]: === Iteration 13 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 00:44:32,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 00:44:32,241 INFO L85 PathProgramCache]: Analyzing trace with hash -1805363402, now seen corresponding path program 1 times [2022-04-07 00:44:32,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 00:44:32,241 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [861950253] [2022-04-07 00:44:32,242 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-07 00:44:32,242 INFO L85 PathProgramCache]: Analyzing trace with hash -1805363402, now seen corresponding path program 2 times [2022-04-07 00:44:32,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 00:44:32,242 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108952810] [2022-04-07 00:44:32,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 00:44:32,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 00:44:32,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:32,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 00:44:32,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:32,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-07 00:44:32,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:32,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-07 00:44:32,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:32,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-04-07 00:44:32,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:32,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 00:44:32,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 00:44:32,359 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108952810] [2022-04-07 00:44:32,359 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2108952810] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:44:32,359 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:44:32,359 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-04-07 00:44:32,359 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 00:44:32,359 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [861950253] [2022-04-07 00:44:32,359 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [861950253] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:44:32,359 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:44:32,359 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-04-07 00:44:32,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684982792] [2022-04-07 00:44:32,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 00:44:32,360 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-04-07 00:44:32,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 00:44:32,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-04-07 00:44:32,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-04-07 00:44:32,360 INFO L87 Difference]: Start difference. First operand 834 states and 1097 transitions. Second operand has 8 states, 8 states have (on average 4.5) internal successors, (36), 4 states have internal predecessors, (36), 3 states have call successors, (9), 6 states have call predecessors, (9), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-04-07 00:44:33,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 00:44:33,282 INFO L93 Difference]: Finished difference Result 933 states and 1198 transitions. [2022-04-07 00:44:33,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-04-07 00:44:33,283 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 4 states have internal predecessors, (36), 3 states have call successors, (9), 6 states have call predecessors, (9), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 49 [2022-04-07 00:44:33,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 00:44:33,285 INFO L225 Difference]: With dead ends: 933 [2022-04-07 00:44:33,285 INFO L226 Difference]: Without dead ends: 594 [2022-04-07 00:44:33,286 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2022-04-07 00:44:33,287 INFO L913 BasicCegarLoop]: 383 mSDtfsCounter, 688 mSDsluCounter, 372 mSDsCounter, 0 mSdLazyCounter, 675 mSolverCounterSat, 162 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 695 SdHoareTripleChecker+Valid, 755 SdHoareTripleChecker+Invalid, 837 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 162 IncrementalHoareTripleChecker+Valid, 675 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-04-07 00:44:33,287 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [695 Valid, 755 Invalid, 837 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [162 Valid, 675 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-04-07 00:44:33,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 594 states. [2022-04-07 00:44:33,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 594 to 542. [2022-04-07 00:44:33,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 542 states, 429 states have (on average 1.2773892773892774) internal successors, (548), 441 states have internal predecessors, (548), 63 states have call successors, (63), 43 states have call predecessors, (63), 49 states have return successors, (75), 59 states have call predecessors, (75), 54 states have call successors, (75) [2022-04-07 00:44:33,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 542 states to 542 states and 686 transitions. [2022-04-07 00:44:33,346 INFO L78 Accepts]: Start accepts. Automaton has 542 states and 686 transitions. Word has length 49 [2022-04-07 00:44:33,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 00:44:33,346 INFO L478 AbstractCegarLoop]: Abstraction has 542 states and 686 transitions. [2022-04-07 00:44:33,346 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 4 states have internal predecessors, (36), 3 states have call successors, (9), 6 states have call predecessors, (9), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-04-07 00:44:33,346 INFO L276 IsEmpty]: Start isEmpty. Operand 542 states and 686 transitions. [2022-04-07 00:44:33,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-04-07 00:44:33,347 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 00:44:33,347 INFO L499 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] [2022-04-07 00:44:33,348 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-04-07 00:44:33,348 INFO L403 AbstractCegarLoop]: === Iteration 14 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 00:44:33,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 00:44:33,348 INFO L85 PathProgramCache]: Analyzing trace with hash -108540602, now seen corresponding path program 1 times [2022-04-07 00:44:33,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 00:44:33,348 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [132328577] [2022-04-07 00:44:33,348 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-07 00:44:33,348 INFO L85 PathProgramCache]: Analyzing trace with hash -108540602, now seen corresponding path program 2 times [2022-04-07 00:44:33,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 00:44:33,349 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517248158] [2022-04-07 00:44:33,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 00:44:33,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 00:44:33,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:33,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 00:44:33,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:33,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-07 00:44:33,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:33,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-07 00:44:33,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:33,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-04-07 00:44:33,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:33,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 00:44:33,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:33,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-04-07 00:44:33,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:33,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 00:44:33,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 00:44:33,484 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [517248158] [2022-04-07 00:44:33,484 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [517248158] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:44:33,484 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:44:33,485 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-04-07 00:44:33,485 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 00:44:33,485 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [132328577] [2022-04-07 00:44:33,485 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [132328577] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:44:33,485 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:44:33,485 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-04-07 00:44:33,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860892195] [2022-04-07 00:44:33,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 00:44:33,485 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-04-07 00:44:33,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 00:44:33,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-04-07 00:44:33,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-04-07 00:44:33,486 INFO L87 Difference]: Start difference. First operand 542 states and 686 transitions. Second operand has 8 states, 8 states have (on average 4.75) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (11), 7 states have call predecessors, (11), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2022-04-07 00:44:34,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 00:44:34,195 INFO L93 Difference]: Finished difference Result 848 states and 1081 transitions. [2022-04-07 00:44:34,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-04-07 00:44:34,195 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.75) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (11), 7 states have call predecessors, (11), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) Word has length 55 [2022-04-07 00:44:34,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 00:44:34,220 INFO L225 Difference]: With dead ends: 848 [2022-04-07 00:44:34,221 INFO L226 Difference]: Without dead ends: 583 [2022-04-07 00:44:34,223 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2022-04-07 00:44:34,224 INFO L913 BasicCegarLoop]: 336 mSDtfsCounter, 568 mSDsluCounter, 388 mSDsCounter, 0 mSdLazyCounter, 500 mSolverCounterSat, 237 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 573 SdHoareTripleChecker+Valid, 724 SdHoareTripleChecker+Invalid, 737 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 237 IncrementalHoareTripleChecker+Valid, 500 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-04-07 00:44:34,224 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [573 Valid, 724 Invalid, 737 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [237 Valid, 500 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-04-07 00:44:34,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 583 states. [2022-04-07 00:44:34,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 583 to 556. [2022-04-07 00:44:34,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 556 states, 442 states have (on average 1.2782805429864252) internal successors, (565), 454 states have internal predecessors, (565), 63 states have call successors, (63), 43 states have call predecessors, (63), 50 states have return successors, (78), 59 states have call predecessors, (78), 54 states have call successors, (78) [2022-04-07 00:44:34,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 556 states to 556 states and 706 transitions. [2022-04-07 00:44:34,301 INFO L78 Accepts]: Start accepts. Automaton has 556 states and 706 transitions. Word has length 55 [2022-04-07 00:44:34,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 00:44:34,301 INFO L478 AbstractCegarLoop]: Abstraction has 556 states and 706 transitions. [2022-04-07 00:44:34,301 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.75) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (11), 7 states have call predecessors, (11), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2022-04-07 00:44:34,301 INFO L276 IsEmpty]: Start isEmpty. Operand 556 states and 706 transitions. [2022-04-07 00:44:34,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-04-07 00:44:34,302 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 00:44:34,302 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-07 00:44:34,302 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-04-07 00:44:34,302 INFO L403 AbstractCegarLoop]: === Iteration 15 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 00:44:34,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 00:44:34,302 INFO L85 PathProgramCache]: Analyzing trace with hash -461236819, now seen corresponding path program 1 times [2022-04-07 00:44:34,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 00:44:34,302 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1061950482] [2022-04-07 00:44:34,303 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-07 00:44:34,303 INFO L85 PathProgramCache]: Analyzing trace with hash -461236819, now seen corresponding path program 2 times [2022-04-07 00:44:34,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 00:44:34,303 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212114348] [2022-04-07 00:44:34,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 00:44:34,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 00:44:34,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:34,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 00:44:34,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:34,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-07 00:44:34,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:34,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-07 00:44:34,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:34,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-07 00:44:34,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:34,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-07 00:44:34,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:34,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 00:44:34,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 00:44:34,459 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212114348] [2022-04-07 00:44:34,459 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1212114348] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:44:34,459 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:44:34,459 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-04-07 00:44:34,459 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 00:44:34,460 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1061950482] [2022-04-07 00:44:34,460 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1061950482] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:44:34,460 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:44:34,460 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-04-07 00:44:34,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376104070] [2022-04-07 00:44:34,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 00:44:34,460 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-04-07 00:44:34,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 00:44:34,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-04-07 00:44:34,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2022-04-07 00:44:34,461 INFO L87 Difference]: Start difference. First operand 556 states and 706 transitions. Second operand has 12 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 7 states have internal predecessors, (40), 4 states have call successors, (7), 7 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2022-04-07 00:44:35,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 00:44:35,773 INFO L93 Difference]: Finished difference Result 803 states and 1022 transitions. [2022-04-07 00:44:35,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-04-07 00:44:35,773 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 7 states have internal predecessors, (40), 4 states have call successors, (7), 7 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) Word has length 52 [2022-04-07 00:44:35,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 00:44:35,776 INFO L225 Difference]: With dead ends: 803 [2022-04-07 00:44:35,776 INFO L226 Difference]: Without dead ends: 728 [2022-04-07 00:44:35,778 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=161, Invalid=489, Unknown=0, NotChecked=0, Total=650 [2022-04-07 00:44:35,779 INFO L913 BasicCegarLoop]: 436 mSDtfsCounter, 867 mSDsluCounter, 786 mSDsCounter, 0 mSdLazyCounter, 1606 mSolverCounterSat, 339 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 869 SdHoareTripleChecker+Valid, 1222 SdHoareTripleChecker+Invalid, 1945 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 339 IncrementalHoareTripleChecker+Valid, 1606 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-04-07 00:44:35,779 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [869 Valid, 1222 Invalid, 1945 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [339 Valid, 1606 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-04-07 00:44:35,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 728 states. [2022-04-07 00:44:35,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 728 to 585. [2022-04-07 00:44:35,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 585 states, 465 states have (on average 1.270967741935484) internal successors, (591), 478 states have internal predecessors, (591), 65 states have call successors, (65), 44 states have call predecessors, (65), 54 states have return successors, (83), 63 states have call predecessors, (83), 56 states have call successors, (83) [2022-04-07 00:44:35,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 585 states to 585 states and 739 transitions. [2022-04-07 00:44:35,853 INFO L78 Accepts]: Start accepts. Automaton has 585 states and 739 transitions. Word has length 52 [2022-04-07 00:44:35,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 00:44:35,853 INFO L478 AbstractCegarLoop]: Abstraction has 585 states and 739 transitions. [2022-04-07 00:44:35,853 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 7 states have internal predecessors, (40), 4 states have call successors, (7), 7 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2022-04-07 00:44:35,853 INFO L276 IsEmpty]: Start isEmpty. Operand 585 states and 739 transitions. [2022-04-07 00:44:35,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-04-07 00:44:35,854 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 00:44:35,854 INFO L499 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] [2022-04-07 00:44:35,854 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-04-07 00:44:35,854 INFO L403 AbstractCegarLoop]: === Iteration 16 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 00:44:35,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 00:44:35,855 INFO L85 PathProgramCache]: Analyzing trace with hash -26084622, now seen corresponding path program 1 times [2022-04-07 00:44:35,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 00:44:35,855 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [418164886] [2022-04-07 00:44:35,855 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-07 00:44:35,855 INFO L85 PathProgramCache]: Analyzing trace with hash -26084622, now seen corresponding path program 2 times [2022-04-07 00:44:35,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 00:44:35,855 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185650288] [2022-04-07 00:44:35,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 00:44:35,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 00:44:35,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:35,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 00:44:35,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:35,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-07 00:44:35,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:35,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-07 00:44:35,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:35,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-07 00:44:35,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:35,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-07 00:44:35,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:35,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 00:44:35,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 00:44:35,986 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185650288] [2022-04-07 00:44:35,988 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [185650288] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:44:35,988 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:44:35,988 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-04-07 00:44:35,988 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 00:44:35,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [418164886] [2022-04-07 00:44:35,988 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [418164886] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:44:35,988 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:44:35,988 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-04-07 00:44:35,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786743998] [2022-04-07 00:44:35,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 00:44:35,989 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-04-07 00:44:35,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 00:44:35,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-04-07 00:44:35,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-04-07 00:44:35,989 INFO L87 Difference]: Start difference. First operand 585 states and 739 transitions. Second operand has 8 states, 8 states have (on average 5.25) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (7), 7 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2022-04-07 00:44:36,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 00:44:36,833 INFO L93 Difference]: Finished difference Result 772 states and 979 transitions. [2022-04-07 00:44:36,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-04-07 00:44:36,833 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.25) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (7), 7 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) Word has length 54 [2022-04-07 00:44:36,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 00:44:36,841 INFO L225 Difference]: With dead ends: 772 [2022-04-07 00:44:36,841 INFO L226 Difference]: Without dead ends: 753 [2022-04-07 00:44:36,842 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2022-04-07 00:44:36,842 INFO L913 BasicCegarLoop]: 423 mSDtfsCounter, 507 mSDsluCounter, 380 mSDsCounter, 0 mSdLazyCounter, 699 mSolverCounterSat, 175 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 516 SdHoareTripleChecker+Valid, 803 SdHoareTripleChecker+Invalid, 874 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 175 IncrementalHoareTripleChecker+Valid, 699 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-04-07 00:44:36,842 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [516 Valid, 803 Invalid, 874 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [175 Valid, 699 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-04-07 00:44:36,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 753 states. [2022-04-07 00:44:36,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 753 to 660. [2022-04-07 00:44:36,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 660 states, 529 states have (on average 1.2665406427221173) internal successors, (670), 538 states have internal predecessors, (670), 68 states have call successors, (68), 47 states have call predecessors, (68), 62 states have return successors, (98), 75 states have call predecessors, (98), 59 states have call successors, (98) [2022-04-07 00:44:36,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 660 states to 660 states and 836 transitions. [2022-04-07 00:44:36,947 INFO L78 Accepts]: Start accepts. Automaton has 660 states and 836 transitions. Word has length 54 [2022-04-07 00:44:36,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 00:44:36,947 INFO L478 AbstractCegarLoop]: Abstraction has 660 states and 836 transitions. [2022-04-07 00:44:36,947 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.25) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (7), 7 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2022-04-07 00:44:36,947 INFO L276 IsEmpty]: Start isEmpty. Operand 660 states and 836 transitions. [2022-04-07 00:44:36,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-04-07 00:44:36,948 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 00:44:36,948 INFO L499 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] [2022-04-07 00:44:36,948 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-04-07 00:44:36,948 INFO L403 AbstractCegarLoop]: === Iteration 17 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 00:44:36,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 00:44:36,949 INFO L85 PathProgramCache]: Analyzing trace with hash 1418983922, now seen corresponding path program 1 times [2022-04-07 00:44:36,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 00:44:36,949 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [206631647] [2022-04-07 00:44:36,949 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-07 00:44:36,949 INFO L85 PathProgramCache]: Analyzing trace with hash 1418983922, now seen corresponding path program 2 times [2022-04-07 00:44:36,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 00:44:36,949 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203425092] [2022-04-07 00:44:36,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 00:44:36,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 00:44:36,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:37,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 00:44:37,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:37,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-07 00:44:37,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:37,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-07 00:44:37,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:37,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-07 00:44:37,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:37,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-07 00:44:37,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:37,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 00:44:37,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 00:44:37,154 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203425092] [2022-04-07 00:44:37,154 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [203425092] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:44:37,154 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:44:37,154 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-04-07 00:44:37,154 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 00:44:37,154 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [206631647] [2022-04-07 00:44:37,154 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [206631647] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:44:37,154 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:44:37,154 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-04-07 00:44:37,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428288361] [2022-04-07 00:44:37,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 00:44:37,155 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-04-07 00:44:37,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 00:44:37,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-04-07 00:44:37,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-04-07 00:44:37,156 INFO L87 Difference]: Start difference. First operand 660 states and 836 transitions. Second operand has 10 states, 10 states have (on average 4.2) internal successors, (42), 5 states have internal predecessors, (42), 3 states have call successors, (7), 7 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2022-04-07 00:44:38,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 00:44:38,037 INFO L93 Difference]: Finished difference Result 1126 states and 1459 transitions. [2022-04-07 00:44:38,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-04-07 00:44:38,038 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.2) internal successors, (42), 5 states have internal predecessors, (42), 3 states have call successors, (7), 7 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 54 [2022-04-07 00:44:38,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 00:44:38,041 INFO L225 Difference]: With dead ends: 1126 [2022-04-07 00:44:38,041 INFO L226 Difference]: Without dead ends: 730 [2022-04-07 00:44:38,042 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2022-04-07 00:44:38,042 INFO L913 BasicCegarLoop]: 320 mSDtfsCounter, 555 mSDsluCounter, 378 mSDsCounter, 0 mSdLazyCounter, 818 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 569 SdHoareTripleChecker+Valid, 698 SdHoareTripleChecker+Invalid, 941 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 818 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-04-07 00:44:38,042 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [569 Valid, 698 Invalid, 941 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 818 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-04-07 00:44:38,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 730 states. [2022-04-07 00:44:38,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 730 to 672. [2022-04-07 00:44:38,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 672 states, 541 states have (on average 1.2698706099815158) internal successors, (687), 550 states have internal predecessors, (687), 68 states have call successors, (68), 47 states have call predecessors, (68), 62 states have return successors, (98), 75 states have call predecessors, (98), 59 states have call successors, (98) [2022-04-07 00:44:38,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 672 states to 672 states and 853 transitions. [2022-04-07 00:44:38,160 INFO L78 Accepts]: Start accepts. Automaton has 672 states and 853 transitions. Word has length 54 [2022-04-07 00:44:38,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 00:44:38,160 INFO L478 AbstractCegarLoop]: Abstraction has 672 states and 853 transitions. [2022-04-07 00:44:38,161 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.2) internal successors, (42), 5 states have internal predecessors, (42), 3 states have call successors, (7), 7 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2022-04-07 00:44:38,161 INFO L276 IsEmpty]: Start isEmpty. Operand 672 states and 853 transitions. [2022-04-07 00:44:38,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-04-07 00:44:38,161 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 00:44:38,162 INFO L499 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] [2022-04-07 00:44:38,162 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-04-07 00:44:38,162 INFO L403 AbstractCegarLoop]: === Iteration 18 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 00:44:38,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 00:44:38,162 INFO L85 PathProgramCache]: Analyzing trace with hash -169363980, now seen corresponding path program 1 times [2022-04-07 00:44:38,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 00:44:38,162 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [260697048] [2022-04-07 00:44:38,162 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-07 00:44:38,162 INFO L85 PathProgramCache]: Analyzing trace with hash -169363980, now seen corresponding path program 2 times [2022-04-07 00:44:38,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 00:44:38,163 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572685426] [2022-04-07 00:44:38,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 00:44:38,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 00:44:38,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:38,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 00:44:38,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:38,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-07 00:44:38,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:38,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-07 00:44:38,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:38,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-07 00:44:38,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:38,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-07 00:44:38,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:38,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 00:44:38,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 00:44:38,344 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572685426] [2022-04-07 00:44:38,344 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1572685426] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:44:38,344 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:44:38,344 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-04-07 00:44:38,344 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 00:44:38,344 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [260697048] [2022-04-07 00:44:38,344 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [260697048] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:44:38,344 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:44:38,344 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-04-07 00:44:38,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122089162] [2022-04-07 00:44:38,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 00:44:38,345 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-04-07 00:44:38,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 00:44:38,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-04-07 00:44:38,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2022-04-07 00:44:38,345 INFO L87 Difference]: Start difference. First operand 672 states and 853 transitions. Second operand has 13 states, 13 states have (on average 3.230769230769231) internal successors, (42), 8 states have internal predecessors, (42), 4 states have call successors, (7), 7 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2022-04-07 00:44:39,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 00:44:39,201 INFO L93 Difference]: Finished difference Result 723 states and 913 transitions. [2022-04-07 00:44:39,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-04-07 00:44:39,201 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.230769230769231) internal successors, (42), 8 states have internal predecessors, (42), 4 states have call successors, (7), 7 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) Word has length 54 [2022-04-07 00:44:39,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 00:44:39,203 INFO L225 Difference]: With dead ends: 723 [2022-04-07 00:44:39,203 INFO L226 Difference]: Without dead ends: 633 [2022-04-07 00:44:39,229 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=123, Invalid=383, Unknown=0, NotChecked=0, Total=506 [2022-04-07 00:44:39,229 INFO L913 BasicCegarLoop]: 325 mSDtfsCounter, 868 mSDsluCounter, 551 mSDsCounter, 0 mSdLazyCounter, 1049 mSolverCounterSat, 296 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 876 SdHoareTripleChecker+Valid, 876 SdHoareTripleChecker+Invalid, 1345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 296 IncrementalHoareTripleChecker+Valid, 1049 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-04-07 00:44:39,230 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [876 Valid, 876 Invalid, 1345 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [296 Valid, 1049 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-04-07 00:44:39,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 633 states. [2022-04-07 00:44:39,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 633 to 592. [2022-04-07 00:44:39,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 592 states, 472 states have (on average 1.2648305084745763) internal successors, (597), 485 states have internal predecessors, (597), 65 states have call successors, (65), 45 states have call predecessors, (65), 54 states have return successors, (85), 62 states have call predecessors, (85), 57 states have call successors, (85) [2022-04-07 00:44:39,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 592 states to 592 states and 747 transitions. [2022-04-07 00:44:39,360 INFO L78 Accepts]: Start accepts. Automaton has 592 states and 747 transitions. Word has length 54 [2022-04-07 00:44:39,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 00:44:39,360 INFO L478 AbstractCegarLoop]: Abstraction has 592 states and 747 transitions. [2022-04-07 00:44:39,360 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.230769230769231) internal successors, (42), 8 states have internal predecessors, (42), 4 states have call successors, (7), 7 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2022-04-07 00:44:39,361 INFO L276 IsEmpty]: Start isEmpty. Operand 592 states and 747 transitions. [2022-04-07 00:44:39,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-04-07 00:44:39,361 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 00:44:39,361 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-07 00:44:39,362 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-04-07 00:44:39,362 INFO L403 AbstractCegarLoop]: === Iteration 19 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 00:44:39,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 00:44:39,362 INFO L85 PathProgramCache]: Analyzing trace with hash 481879247, now seen corresponding path program 1 times [2022-04-07 00:44:39,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 00:44:39,362 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [875802283] [2022-04-07 00:44:39,362 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-07 00:44:39,363 INFO L85 PathProgramCache]: Analyzing trace with hash 481879247, now seen corresponding path program 2 times [2022-04-07 00:44:39,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 00:44:39,363 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221992050] [2022-04-07 00:44:39,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 00:44:39,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 00:44:39,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:39,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 00:44:39,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:39,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-07 00:44:39,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:39,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-07 00:44:39,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:39,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-04-07 00:44:39,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:39,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-07 00:44:39,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:39,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 00:44:39,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:39,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 00:44:39,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 00:44:39,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221992050] [2022-04-07 00:44:39,571 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [221992050] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:44:39,571 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:44:39,571 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-04-07 00:44:39,571 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 00:44:39,571 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [875802283] [2022-04-07 00:44:39,571 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [875802283] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:44:39,571 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:44:39,571 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-04-07 00:44:39,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062244105] [2022-04-07 00:44:39,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 00:44:39,572 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-04-07 00:44:39,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 00:44:39,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-04-07 00:44:39,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-04-07 00:44:39,572 INFO L87 Difference]: Start difference. First operand 592 states and 747 transitions. Second operand has 10 states, 10 states have (on average 4.5) internal successors, (45), 4 states have internal predecessors, (45), 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) [2022-04-07 00:44:40,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 00:44:40,430 INFO L93 Difference]: Finished difference Result 889 states and 1132 transitions. [2022-04-07 00:44:40,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-04-07 00:44:40,431 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.5) internal successors, (45), 4 states have internal predecessors, (45), 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 61 [2022-04-07 00:44:40,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 00:44:40,433 INFO L225 Difference]: With dead ends: 889 [2022-04-07 00:44:40,434 INFO L226 Difference]: Without dead ends: 556 [2022-04-07 00:44:40,435 INFO L912 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 [2022-04-07 00:44:40,435 INFO L913 BasicCegarLoop]: 338 mSDtfsCounter, 288 mSDsluCounter, 819 mSDsCounter, 0 mSdLazyCounter, 1200 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 294 SdHoareTripleChecker+Valid, 1157 SdHoareTripleChecker+Invalid, 1317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 1200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-04-07 00:44:40,435 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [294 Valid, 1157 Invalid, 1317 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [117 Valid, 1200 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-04-07 00:44:40,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 556 states. [2022-04-07 00:44:40,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 556 to 518. [2022-04-07 00:44:40,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 518 states, 409 states have (on average 1.2469437652811737) internal successors, (510), 418 states have internal predecessors, (510), 61 states have call successors, (61), 43 states have call predecessors, (61), 47 states have return successors, (70), 57 states have call predecessors, (70), 54 states have call successors, (70) [2022-04-07 00:44:40,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 518 states to 518 states and 641 transitions. [2022-04-07 00:44:40,519 INFO L78 Accepts]: Start accepts. Automaton has 518 states and 641 transitions. Word has length 61 [2022-04-07 00:44:40,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 00:44:40,519 INFO L478 AbstractCegarLoop]: Abstraction has 518 states and 641 transitions. [2022-04-07 00:44:40,519 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.5) internal successors, (45), 4 states have internal predecessors, (45), 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) [2022-04-07 00:44:40,519 INFO L276 IsEmpty]: Start isEmpty. Operand 518 states and 641 transitions. [2022-04-07 00:44:40,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-04-07 00:44:40,520 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 00:44:40,520 INFO L499 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] [2022-04-07 00:44:40,520 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-04-07 00:44:40,520 INFO L403 AbstractCegarLoop]: === Iteration 20 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 00:44:40,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 00:44:40,520 INFO L85 PathProgramCache]: Analyzing trace with hash -355788470, now seen corresponding path program 1 times [2022-04-07 00:44:40,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 00:44:40,520 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1716734585] [2022-04-07 00:44:40,521 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-07 00:44:40,521 INFO L85 PathProgramCache]: Analyzing trace with hash -355788470, now seen corresponding path program 2 times [2022-04-07 00:44:40,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 00:44:40,521 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754086674] [2022-04-07 00:44:40,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 00:44:40,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 00:44:40,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:40,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 00:44:40,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:40,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-07 00:44:40,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:40,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-07 00:44:40,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:40,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-07 00:44:40,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:40,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-07 00:44:40,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:40,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 00:44:40,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 00:44:40,679 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754086674] [2022-04-07 00:44:40,679 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [754086674] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:44:40,679 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:44:40,679 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-04-07 00:44:40,679 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 00:44:40,679 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1716734585] [2022-04-07 00:44:40,679 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1716734585] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:44:40,679 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:44:40,679 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-04-07 00:44:40,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190597878] [2022-04-07 00:44:40,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 00:44:40,680 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-04-07 00:44:40,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 00:44:40,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-04-07 00:44:40,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2022-04-07 00:44:40,681 INFO L87 Difference]: Start difference. First operand 518 states and 641 transitions. Second operand has 13 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 6 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) [2022-04-07 00:44:41,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 00:44:41,820 INFO L93 Difference]: Finished difference Result 583 states and 725 transitions. [2022-04-07 00:44:41,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-04-07 00:44:41,828 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 6 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 [2022-04-07 00:44:41,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 00:44:41,830 INFO L225 Difference]: With dead ends: 583 [2022-04-07 00:44:41,831 INFO L226 Difference]: Without dead ends: 579 [2022-04-07 00:44:41,831 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2022-04-07 00:44:41,831 INFO L913 BasicCegarLoop]: 339 mSDtfsCounter, 332 mSDsluCounter, 1288 mSDsCounter, 0 mSdLazyCounter, 1759 mSolverCounterSat, 145 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 338 SdHoareTripleChecker+Valid, 1627 SdHoareTripleChecker+Invalid, 1904 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 145 IncrementalHoareTripleChecker+Valid, 1759 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-04-07 00:44:41,831 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [338 Valid, 1627 Invalid, 1904 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [145 Valid, 1759 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-04-07 00:44:41,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 579 states. [2022-04-07 00:44:42,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 579 to 535. [2022-04-07 00:44:42,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 535 states, 424 states have (on average 1.2382075471698113) internal successors, (525), 433 states have internal predecessors, (525), 61 states have call successors, (61), 43 states have call predecessors, (61), 49 states have return successors, (77), 59 states have call predecessors, (77), 54 states have call successors, (77) [2022-04-07 00:44:42,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 535 states to 535 states and 663 transitions. [2022-04-07 00:44:42,036 INFO L78 Accepts]: Start accepts. Automaton has 535 states and 663 transitions. Word has length 55 [2022-04-07 00:44:42,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 00:44:42,037 INFO L478 AbstractCegarLoop]: Abstraction has 535 states and 663 transitions. [2022-04-07 00:44:42,037 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 6 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) [2022-04-07 00:44:42,037 INFO L276 IsEmpty]: Start isEmpty. Operand 535 states and 663 transitions. [2022-04-07 00:44:42,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-04-07 00:44:42,037 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 00:44:42,038 INFO L499 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] [2022-04-07 00:44:42,038 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-04-07 00:44:42,038 INFO L403 AbstractCegarLoop]: === Iteration 21 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 00:44:42,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 00:44:42,038 INFO L85 PathProgramCache]: Analyzing trace with hash -355511640, now seen corresponding path program 1 times [2022-04-07 00:44:42,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 00:44:42,038 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [209128828] [2022-04-07 00:44:42,038 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-07 00:44:42,038 INFO L85 PathProgramCache]: Analyzing trace with hash -355511640, now seen corresponding path program 2 times [2022-04-07 00:44:42,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 00:44:42,039 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856208857] [2022-04-07 00:44:42,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 00:44:42,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 00:44:42,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:42,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 00:44:42,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:42,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-07 00:44:42,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:42,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-07 00:44:42,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:42,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-07 00:44:42,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:42,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-07 00:44:42,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:42,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 00:44:42,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 00:44:42,273 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856208857] [2022-04-07 00:44:42,273 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [856208857] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:44:42,273 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:44:42,273 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-04-07 00:44:42,274 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 00:44:42,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [209128828] [2022-04-07 00:44:42,274 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [209128828] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:44:42,274 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:44:42,274 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-04-07 00:44:42,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095071852] [2022-04-07 00:44:42,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 00:44:42,274 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-04-07 00:44:42,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 00:44:42,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-04-07 00:44:42,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2022-04-07 00:44:42,275 INFO L87 Difference]: Start difference. First operand 535 states and 663 transitions. Second operand has 13 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 6 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) [2022-04-07 00:44:43,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 00:44:43,296 INFO L93 Difference]: Finished difference Result 578 states and 713 transitions. [2022-04-07 00:44:43,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-04-07 00:44:43,296 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 6 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 [2022-04-07 00:44:43,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 00:44:43,299 INFO L225 Difference]: With dead ends: 578 [2022-04-07 00:44:43,299 INFO L226 Difference]: Without dead ends: 563 [2022-04-07 00:44:43,301 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2022-04-07 00:44:43,303 INFO L913 BasicCegarLoop]: 343 mSDtfsCounter, 318 mSDsluCounter, 1158 mSDsCounter, 0 mSdLazyCounter, 1908 mSolverCounterSat, 147 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 321 SdHoareTripleChecker+Valid, 1501 SdHoareTripleChecker+Invalid, 2055 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 147 IncrementalHoareTripleChecker+Valid, 1908 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-04-07 00:44:43,303 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [321 Valid, 1501 Invalid, 2055 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [147 Valid, 1908 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-04-07 00:44:43,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 563 states. [2022-04-07 00:44:43,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 563 to 532. [2022-04-07 00:44:43,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 532 states, 421 states have (on average 1.2399049881235154) internal successors, (522), 431 states have internal predecessors, (522), 61 states have call successors, (61), 43 states have call predecessors, (61), 49 states have return successors, (76), 58 states have call predecessors, (76), 54 states have call successors, (76) [2022-04-07 00:44:43,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 532 states to 532 states and 659 transitions. [2022-04-07 00:44:43,416 INFO L78 Accepts]: Start accepts. Automaton has 532 states and 659 transitions. Word has length 55 [2022-04-07 00:44:43,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 00:44:43,416 INFO L478 AbstractCegarLoop]: Abstraction has 532 states and 659 transitions. [2022-04-07 00:44:43,416 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 6 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) [2022-04-07 00:44:43,416 INFO L276 IsEmpty]: Start isEmpty. Operand 532 states and 659 transitions. [2022-04-07 00:44:43,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-04-07 00:44:43,418 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 00:44:43,418 INFO L499 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] [2022-04-07 00:44:43,418 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-04-07 00:44:43,418 INFO L403 AbstractCegarLoop]: === Iteration 22 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 00:44:43,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 00:44:43,418 INFO L85 PathProgramCache]: Analyzing trace with hash 476341908, now seen corresponding path program 1 times [2022-04-07 00:44:43,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 00:44:43,418 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [299732531] [2022-04-07 00:44:43,419 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-07 00:44:43,419 INFO L85 PathProgramCache]: Analyzing trace with hash 476341908, now seen corresponding path program 2 times [2022-04-07 00:44:43,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 00:44:43,419 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369459874] [2022-04-07 00:44:43,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 00:44:43,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 00:44:43,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:43,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 00:44:43,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:43,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-07 00:44:43,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:43,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-07 00:44:43,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:43,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-07 00:44:43,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:43,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-04-07 00:44:43,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:43,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-04-07 00:44:43,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:43,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 00:44:43,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 00:44:43,625 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369459874] [2022-04-07 00:44:43,626 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1369459874] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:44:43,626 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:44:43,626 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-04-07 00:44:43,626 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 00:44:43,626 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [299732531] [2022-04-07 00:44:43,626 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [299732531] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:44:43,626 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:44:43,626 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-04-07 00:44:43,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509850855] [2022-04-07 00:44:43,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 00:44:43,627 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-04-07 00:44:43,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 00:44:43,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-04-07 00:44:43,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2022-04-07 00:44:43,627 INFO L87 Difference]: Start difference. First operand 532 states and 659 transitions. Second operand has 12 states, 12 states have (on average 3.5833333333333335) internal successors, (43), 5 states have internal predecessors, (43), 3 states have call successors, (8), 8 states have call predecessors, (8), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2022-04-07 00:44:44,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 00:44:44,768 INFO L93 Difference]: Finished difference Result 580 states and 714 transitions. [2022-04-07 00:44:44,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-04-07 00:44:44,768 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.5833333333333335) internal successors, (43), 5 states have internal predecessors, (43), 3 states have call successors, (8), 8 states have call predecessors, (8), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) Word has length 57 [2022-04-07 00:44:44,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 00:44:44,770 INFO L225 Difference]: With dead ends: 580 [2022-04-07 00:44:44,770 INFO L226 Difference]: Without dead ends: 552 [2022-04-07 00:44:44,771 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2022-04-07 00:44:44,771 INFO L913 BasicCegarLoop]: 321 mSDtfsCounter, 296 mSDsluCounter, 524 mSDsCounter, 0 mSdLazyCounter, 1894 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 307 SdHoareTripleChecker+Valid, 845 SdHoareTripleChecker+Invalid, 1974 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 1894 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-04-07 00:44:44,771 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [307 Valid, 845 Invalid, 1974 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 1894 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-04-07 00:44:44,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 552 states. [2022-04-07 00:44:44,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 552 to 523. [2022-04-07 00:44:44,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 523 states, 415 states have (on average 1.236144578313253) internal successors, (513), 424 states have internal predecessors, (513), 60 states have call successors, (60), 42 states have call predecessors, (60), 47 states have return successors, (74), 57 states have call predecessors, (74), 53 states have call successors, (74) [2022-04-07 00:44:44,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 523 states to 523 states and 647 transitions. [2022-04-07 00:44:44,883 INFO L78 Accepts]: Start accepts. Automaton has 523 states and 647 transitions. Word has length 57 [2022-04-07 00:44:44,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 00:44:44,883 INFO L478 AbstractCegarLoop]: Abstraction has 523 states and 647 transitions. [2022-04-07 00:44:44,883 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.5833333333333335) internal successors, (43), 5 states have internal predecessors, (43), 3 states have call successors, (8), 8 states have call predecessors, (8), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2022-04-07 00:44:44,883 INFO L276 IsEmpty]: Start isEmpty. Operand 523 states and 647 transitions. [2022-04-07 00:44:44,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-04-07 00:44:44,884 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 00:44:44,884 INFO L499 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] [2022-04-07 00:44:44,884 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-04-07 00:44:44,884 INFO L403 AbstractCegarLoop]: === Iteration 23 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 00:44:44,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 00:44:44,885 INFO L85 PathProgramCache]: Analyzing trace with hash 1259461336, now seen corresponding path program 1 times [2022-04-07 00:44:44,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 00:44:44,885 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [909482454] [2022-04-07 00:44:44,885 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-07 00:44:44,885 INFO L85 PathProgramCache]: Analyzing trace with hash 1259461336, now seen corresponding path program 2 times [2022-04-07 00:44:44,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 00:44:44,885 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863310354] [2022-04-07 00:44:44,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 00:44:44,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 00:44:44,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:44,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 00:44:44,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:45,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-07 00:44:45,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:45,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-07 00:44:45,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:45,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-07 00:44:45,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:45,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-07 00:44:45,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:45,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 00:44:45,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 00:44:45,129 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863310354] [2022-04-07 00:44:45,129 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1863310354] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:44:45,129 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:44:45,129 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-04-07 00:44:45,130 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 00:44:45,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [909482454] [2022-04-07 00:44:45,130 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [909482454] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:44:45,130 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:44:45,130 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-04-07 00:44:45,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473446096] [2022-04-07 00:44:45,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 00:44:45,130 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-04-07 00:44:45,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 00:44:45,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-04-07 00:44:45,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-04-07 00:44:45,131 INFO L87 Difference]: Start difference. First operand 523 states and 647 transitions. Second operand has 10 states, 10 states have (on average 4.4) internal successors, (44), 5 states have internal predecessors, (44), 3 states have call successors, (7), 7 states have call predecessors, (7), 3 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2022-04-07 00:44:46,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 00:44:46,208 INFO L93 Difference]: Finished difference Result 560 states and 689 transitions. [2022-04-07 00:44:46,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-04-07 00:44:46,209 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.4) internal successors, (44), 5 states have internal predecessors, (44), 3 states have call successors, (7), 7 states have call predecessors, (7), 3 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) Word has length 56 [2022-04-07 00:44:46,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 00:44:46,211 INFO L225 Difference]: With dead ends: 560 [2022-04-07 00:44:46,211 INFO L226 Difference]: Without dead ends: 542 [2022-04-07 00:44:46,211 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2022-04-07 00:44:46,213 INFO L913 BasicCegarLoop]: 333 mSDtfsCounter, 710 mSDsluCounter, 454 mSDsCounter, 0 mSdLazyCounter, 1220 mSolverCounterSat, 212 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 722 SdHoareTripleChecker+Valid, 787 SdHoareTripleChecker+Invalid, 1432 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 212 IncrementalHoareTripleChecker+Valid, 1220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-04-07 00:44:46,213 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [722 Valid, 787 Invalid, 1432 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [212 Valid, 1220 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-04-07 00:44:46,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 542 states. [2022-04-07 00:44:46,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 542 to 505. [2022-04-07 00:44:46,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 505 states, 400 states have (on average 1.24) internal successors, (496), 408 states have internal predecessors, (496), 59 states have call successors, (59), 42 states have call predecessors, (59), 45 states have return successors, (67), 55 states have call predecessors, (67), 52 states have call successors, (67) [2022-04-07 00:44:46,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 505 states to 505 states and 622 transitions. [2022-04-07 00:44:46,308 INFO L78 Accepts]: Start accepts. Automaton has 505 states and 622 transitions. Word has length 56 [2022-04-07 00:44:46,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 00:44:46,308 INFO L478 AbstractCegarLoop]: Abstraction has 505 states and 622 transitions. [2022-04-07 00:44:46,308 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.4) internal successors, (44), 5 states have internal predecessors, (44), 3 states have call successors, (7), 7 states have call predecessors, (7), 3 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2022-04-07 00:44:46,308 INFO L276 IsEmpty]: Start isEmpty. Operand 505 states and 622 transitions. [2022-04-07 00:44:46,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-04-07 00:44:46,309 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 00:44:46,309 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-07 00:44:46,309 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-04-07 00:44:46,309 INFO L403 AbstractCegarLoop]: === Iteration 24 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 00:44:46,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 00:44:46,310 INFO L85 PathProgramCache]: Analyzing trace with hash -1146260298, now seen corresponding path program 1 times [2022-04-07 00:44:46,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 00:44:46,310 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [2099501897] [2022-04-07 00:44:46,310 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-07 00:44:46,310 INFO L85 PathProgramCache]: Analyzing trace with hash -1146260298, now seen corresponding path program 2 times [2022-04-07 00:44:46,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 00:44:46,310 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521231761] [2022-04-07 00:44:46,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 00:44:46,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 00:44:46,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:46,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 00:44:46,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:46,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-07 00:44:46,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:46,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-07 00:44:46,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:46,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-04-07 00:44:46,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:46,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-07 00:44:46,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:46,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 00:44:46,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:46,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-04-07 00:44:46,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:46,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 00:44:46,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 00:44:46,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521231761] [2022-04-07 00:44:46,456 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [521231761] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:44:46,456 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:44:46,456 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-04-07 00:44:46,456 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 00:44:46,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [2099501897] [2022-04-07 00:44:46,456 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [2099501897] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:44:46,456 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:44:46,456 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-04-07 00:44:46,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810714180] [2022-04-07 00:44:46,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 00:44:46,457 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-04-07 00:44:46,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 00:44:46,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-04-07 00:44:46,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2022-04-07 00:44:46,457 INFO L87 Difference]: Start difference. First operand 505 states and 622 transitions. Second operand has 12 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 6 states have internal predecessors, (47), 3 states have call successors, (11), 9 states have call predecessors, (11), 4 states have return successors, (7), 4 states have call predecessors, (7), 2 states have call successors, (7) [2022-04-07 00:44:47,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 00:44:47,651 INFO L93 Difference]: Finished difference Result 797 states and 994 transitions. [2022-04-07 00:44:47,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-04-07 00:44:47,651 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 6 states have internal predecessors, (47), 3 states have call successors, (11), 9 states have call predecessors, (11), 4 states have return successors, (7), 4 states have call predecessors, (7), 2 states have call successors, (7) Word has length 65 [2022-04-07 00:44:47,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 00:44:47,655 INFO L225 Difference]: With dead ends: 797 [2022-04-07 00:44:47,655 INFO L226 Difference]: Without dead ends: 538 [2022-04-07 00:44:47,657 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=106, Invalid=314, Unknown=0, NotChecked=0, Total=420 [2022-04-07 00:44:47,657 INFO L913 BasicCegarLoop]: 314 mSDtfsCounter, 605 mSDsluCounter, 594 mSDsCounter, 0 mSdLazyCounter, 1186 mSolverCounterSat, 201 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 616 SdHoareTripleChecker+Valid, 908 SdHoareTripleChecker+Invalid, 1387 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 201 IncrementalHoareTripleChecker+Valid, 1186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-04-07 00:44:47,657 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [616 Valid, 908 Invalid, 1387 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [201 Valid, 1186 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-04-07 00:44:47,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 538 states. [2022-04-07 00:44:47,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 538 to 505. [2022-04-07 00:44:47,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 505 states, 400 states have (on average 1.235) internal successors, (494), 408 states have internal predecessors, (494), 59 states have call successors, (59), 42 states have call predecessors, (59), 45 states have return successors, (67), 55 states have call predecessors, (67), 52 states have call successors, (67) [2022-04-07 00:44:47,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 505 states to 505 states and 620 transitions. [2022-04-07 00:44:47,754 INFO L78 Accepts]: Start accepts. Automaton has 505 states and 620 transitions. Word has length 65 [2022-04-07 00:44:47,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 00:44:47,754 INFO L478 AbstractCegarLoop]: Abstraction has 505 states and 620 transitions. [2022-04-07 00:44:47,754 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 6 states have internal predecessors, (47), 3 states have call successors, (11), 9 states have call predecessors, (11), 4 states have return successors, (7), 4 states have call predecessors, (7), 2 states have call successors, (7) [2022-04-07 00:44:47,754 INFO L276 IsEmpty]: Start isEmpty. Operand 505 states and 620 transitions. [2022-04-07 00:44:47,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-04-07 00:44:47,755 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 00:44:47,755 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-07 00:44:47,755 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-04-07 00:44:47,755 INFO L403 AbstractCegarLoop]: === Iteration 25 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 00:44:47,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 00:44:47,755 INFO L85 PathProgramCache]: Analyzing trace with hash -702728848, now seen corresponding path program 1 times [2022-04-07 00:44:47,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 00:44:47,756 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [823223366] [2022-04-07 00:44:47,756 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-07 00:44:47,756 INFO L85 PathProgramCache]: Analyzing trace with hash -702728848, now seen corresponding path program 2 times [2022-04-07 00:44:47,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 00:44:47,756 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108924036] [2022-04-07 00:44:47,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 00:44:47,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 00:44:47,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:47,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 00:44:47,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:47,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-07 00:44:47,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:47,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-07 00:44:47,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:47,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-07 00:44:47,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:47,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-04-07 00:44:47,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:47,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-07 00:44:47,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:47,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 00:44:47,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 00:44:47,908 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108924036] [2022-04-07 00:44:47,908 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1108924036] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:44:47,908 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:44:47,908 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-04-07 00:44:47,909 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 00:44:47,909 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [823223366] [2022-04-07 00:44:47,909 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [823223366] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:44:47,909 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:44:47,909 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-04-07 00:44:47,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670430848] [2022-04-07 00:44:47,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 00:44:47,909 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-04-07 00:44:47,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 00:44:47,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-04-07 00:44:47,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2022-04-07 00:44:47,910 INFO L87 Difference]: Start difference. First operand 505 states and 620 transitions. Second operand has 9 states, 9 states have (on average 5.0) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (8), 8 states have call predecessors, (8), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-04-07 00:44:48,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 00:44:48,771 INFO L93 Difference]: Finished difference Result 555 states and 678 transitions. [2022-04-07 00:44:48,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-04-07 00:44:48,771 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.0) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (8), 8 states have call predecessors, (8), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 59 [2022-04-07 00:44:48,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 00:44:48,773 INFO L225 Difference]: With dead ends: 555 [2022-04-07 00:44:48,773 INFO L226 Difference]: Without dead ends: 534 [2022-04-07 00:44:48,773 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2022-04-07 00:44:48,773 INFO L913 BasicCegarLoop]: 326 mSDtfsCounter, 440 mSDsluCounter, 279 mSDsCounter, 0 mSdLazyCounter, 956 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 452 SdHoareTripleChecker+Valid, 605 SdHoareTripleChecker+Invalid, 1087 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 956 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-04-07 00:44:48,773 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [452 Valid, 605 Invalid, 1087 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 956 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-04-07 00:44:48,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 534 states. [2022-04-07 00:44:48,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 534 to 504. [2022-04-07 00:44:48,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 504 states, 399 states have (on average 1.2230576441102756) internal successors, (488), 407 states have internal predecessors, (488), 59 states have call successors, (59), 42 states have call predecessors, (59), 45 states have return successors, (67), 55 states have call predecessors, (67), 52 states have call successors, (67) [2022-04-07 00:44:48,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 504 states to 504 states and 614 transitions. [2022-04-07 00:44:48,889 INFO L78 Accepts]: Start accepts. Automaton has 504 states and 614 transitions. Word has length 59 [2022-04-07 00:44:48,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 00:44:48,889 INFO L478 AbstractCegarLoop]: Abstraction has 504 states and 614 transitions. [2022-04-07 00:44:48,890 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.0) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (8), 8 states have call predecessors, (8), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-04-07 00:44:48,890 INFO L276 IsEmpty]: Start isEmpty. Operand 504 states and 614 transitions. [2022-04-07 00:44:48,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-04-07 00:44:48,891 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 00:44:48,891 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-07 00:44:48,891 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-04-07 00:44:48,891 INFO L403 AbstractCegarLoop]: === Iteration 26 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 00:44:48,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 00:44:48,891 INFO L85 PathProgramCache]: Analyzing trace with hash 1957884754, now seen corresponding path program 1 times [2022-04-07 00:44:48,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 00:44:48,891 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [803895250] [2022-04-07 00:44:48,892 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-07 00:44:48,892 INFO L85 PathProgramCache]: Analyzing trace with hash 1957884754, now seen corresponding path program 2 times [2022-04-07 00:44:48,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 00:44:48,892 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763219488] [2022-04-07 00:44:48,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 00:44:48,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 00:44:48,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:48,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 00:44:48,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:49,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-07 00:44:49,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:49,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-07 00:44:49,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:49,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-07 00:44:49,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:49,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-04-07 00:44:49,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:49,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-07 00:44:49,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:49,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 00:44:49,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 00:44:49,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763219488] [2022-04-07 00:44:49,091 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [763219488] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:44:49,091 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:44:49,091 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-04-07 00:44:49,091 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 00:44:49,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [803895250] [2022-04-07 00:44:49,091 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [803895250] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:44:49,091 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:44:49,091 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-04-07 00:44:49,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569079956] [2022-04-07 00:44:49,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 00:44:49,092 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-04-07 00:44:49,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 00:44:49,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-04-07 00:44:49,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-04-07 00:44:49,093 INFO L87 Difference]: Start difference. First operand 504 states and 614 transitions. Second operand has 11 states, 11 states have (on average 4.2727272727272725) internal successors, (47), 5 states have internal predecessors, (47), 3 states have call successors, (8), 8 states have call predecessors, (8), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2022-04-07 00:44:50,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 00:44:50,121 INFO L93 Difference]: Finished difference Result 1241 states and 1496 transitions. [2022-04-07 00:44:50,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-04-07 00:44:50,121 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.2727272727272725) internal successors, (47), 5 states have internal predecessors, (47), 3 states have call successors, (8), 8 states have call predecessors, (8), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) Word has length 61 [2022-04-07 00:44:50,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 00:44:50,124 INFO L225 Difference]: With dead ends: 1241 [2022-04-07 00:44:50,124 INFO L226 Difference]: Without dead ends: 758 [2022-04-07 00:44:50,126 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=116, Invalid=346, Unknown=0, NotChecked=0, Total=462 [2022-04-07 00:44:50,129 INFO L913 BasicCegarLoop]: 339 mSDtfsCounter, 1360 mSDsluCounter, 280 mSDsCounter, 0 mSdLazyCounter, 957 mSolverCounterSat, 427 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1373 SdHoareTripleChecker+Valid, 619 SdHoareTripleChecker+Invalid, 1384 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 427 IncrementalHoareTripleChecker+Valid, 957 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-04-07 00:44:50,130 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1373 Valid, 619 Invalid, 1384 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [427 Valid, 957 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-04-07 00:44:50,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 758 states. [2022-04-07 00:44:50,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 758 to 616. [2022-04-07 00:44:50,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 616 states, 493 states have (on average 1.208924949290061) internal successors, (596), 501 states have internal predecessors, (596), 67 states have call successors, (67), 50 states have call predecessors, (67), 55 states have return successors, (77), 65 states have call predecessors, (77), 60 states have call successors, (77) [2022-04-07 00:44:50,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 616 states to 616 states and 740 transitions. [2022-04-07 00:44:50,369 INFO L78 Accepts]: Start accepts. Automaton has 616 states and 740 transitions. Word has length 61 [2022-04-07 00:44:50,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 00:44:50,369 INFO L478 AbstractCegarLoop]: Abstraction has 616 states and 740 transitions. [2022-04-07 00:44:50,370 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.2727272727272725) internal successors, (47), 5 states have internal predecessors, (47), 3 states have call successors, (8), 8 states have call predecessors, (8), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2022-04-07 00:44:50,370 INFO L276 IsEmpty]: Start isEmpty. Operand 616 states and 740 transitions. [2022-04-07 00:44:50,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-04-07 00:44:50,370 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 00:44:50,371 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-07 00:44:50,371 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-04-07 00:44:50,371 INFO L403 AbstractCegarLoop]: === Iteration 27 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 00:44:50,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 00:44:50,371 INFO L85 PathProgramCache]: Analyzing trace with hash -342937836, now seen corresponding path program 1 times [2022-04-07 00:44:50,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 00:44:50,371 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [339909528] [2022-04-07 00:44:50,371 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-07 00:44:50,371 INFO L85 PathProgramCache]: Analyzing trace with hash -342937836, now seen corresponding path program 2 times [2022-04-07 00:44:50,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 00:44:50,372 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83645222] [2022-04-07 00:44:50,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 00:44:50,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 00:44:50,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:50,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 00:44:50,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:50,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-07 00:44:50,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:50,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-07 00:44:50,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:50,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-07 00:44:50,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:50,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-04-07 00:44:50,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:50,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-07 00:44:50,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:50,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 00:44:50,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 00:44:50,544 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83645222] [2022-04-07 00:44:50,544 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [83645222] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:44:50,544 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:44:50,544 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-04-07 00:44:50,544 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 00:44:50,544 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [339909528] [2022-04-07 00:44:50,544 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [339909528] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:44:50,545 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:44:50,545 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-04-07 00:44:50,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407385067] [2022-04-07 00:44:50,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 00:44:50,545 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-04-07 00:44:50,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 00:44:50,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-04-07 00:44:50,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2022-04-07 00:44:50,545 INFO L87 Difference]: Start difference. First operand 616 states and 740 transitions. Second operand has 11 states, 11 states have (on average 4.2727272727272725) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (8), 8 states have call predecessors, (8), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2022-04-07 00:44:51,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 00:44:51,741 INFO L93 Difference]: Finished difference Result 673 states and 807 transitions. [2022-04-07 00:44:51,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-04-07 00:44:51,742 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.2727272727272725) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (8), 8 states have call predecessors, (8), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) Word has length 61 [2022-04-07 00:44:51,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 00:44:51,744 INFO L225 Difference]: With dead ends: 673 [2022-04-07 00:44:51,744 INFO L226 Difference]: Without dead ends: 641 [2022-04-07 00:44:51,744 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2022-04-07 00:44:51,745 INFO L913 BasicCegarLoop]: 317 mSDtfsCounter, 243 mSDsluCounter, 468 mSDsCounter, 0 mSdLazyCounter, 1759 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 255 SdHoareTripleChecker+Valid, 785 SdHoareTripleChecker+Invalid, 1830 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 1759 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-04-07 00:44:51,745 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [255 Valid, 785 Invalid, 1830 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 1759 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-04-07 00:44:51,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 641 states. [2022-04-07 00:44:51,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 641 to 589. [2022-04-07 00:44:51,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 589 states, 471 states have (on average 1.2123142250530785) internal successors, (571), 479 states have internal predecessors, (571), 65 states have call successors, (65), 48 states have call predecessors, (65), 52 states have return successors, (74), 62 states have call predecessors, (74), 58 states have call successors, (74) [2022-04-07 00:44:51,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 589 states to 589 states and 710 transitions. [2022-04-07 00:44:51,924 INFO L78 Accepts]: Start accepts. Automaton has 589 states and 710 transitions. Word has length 61 [2022-04-07 00:44:51,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 00:44:51,924 INFO L478 AbstractCegarLoop]: Abstraction has 589 states and 710 transitions. [2022-04-07 00:44:51,925 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.2727272727272725) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (8), 8 states have call predecessors, (8), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2022-04-07 00:44:51,925 INFO L276 IsEmpty]: Start isEmpty. Operand 589 states and 710 transitions. [2022-04-07 00:44:51,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-04-07 00:44:51,940 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 00:44:51,940 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-07 00:44:51,940 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-04-07 00:44:51,940 INFO L403 AbstractCegarLoop]: === Iteration 28 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 00:44:51,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 00:44:51,940 INFO L85 PathProgramCache]: Analyzing trace with hash 2067524378, now seen corresponding path program 1 times [2022-04-07 00:44:51,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 00:44:51,940 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1062371443] [2022-04-07 00:44:51,941 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-07 00:44:51,941 INFO L85 PathProgramCache]: Analyzing trace with hash 2067524378, now seen corresponding path program 2 times [2022-04-07 00:44:51,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 00:44:51,941 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018672132] [2022-04-07 00:44:51,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 00:44:51,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 00:44:51,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:52,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 00:44:52,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:52,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-07 00:44:52,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:52,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-07 00:44:52,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:52,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-07 00:44:52,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:52,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-07 00:44:52,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:52,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 00:44:52,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 00:44:52,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018672132] [2022-04-07 00:44:52,095 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1018672132] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:44:52,095 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:44:52,095 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-04-07 00:44:52,096 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 00:44:52,096 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1062371443] [2022-04-07 00:44:52,096 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1062371443] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:44:52,096 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:44:52,096 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-04-07 00:44:52,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799510056] [2022-04-07 00:44:52,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 00:44:52,096 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-04-07 00:44:52,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 00:44:52,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-04-07 00:44:52,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2022-04-07 00:44:52,097 INFO L87 Difference]: Start difference. First operand 589 states and 710 transitions. Second operand has 14 states, 14 states have (on average 3.4285714285714284) internal successors, (48), 7 states have internal predecessors, (48), 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) [2022-04-07 00:44:53,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 00:44:53,165 INFO L93 Difference]: Finished difference Result 653 states and 784 transitions. [2022-04-07 00:44:53,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-04-07 00:44:53,165 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.4285714285714284) internal successors, (48), 7 states have internal predecessors, (48), 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 60 [2022-04-07 00:44:53,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 00:44:53,170 INFO L225 Difference]: With dead ends: 653 [2022-04-07 00:44:53,170 INFO L226 Difference]: Without dead ends: 632 [2022-04-07 00:44:53,172 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2022-04-07 00:44:53,174 INFO L913 BasicCegarLoop]: 326 mSDtfsCounter, 232 mSDsluCounter, 1254 mSDsCounter, 0 mSdLazyCounter, 2071 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 235 SdHoareTripleChecker+Valid, 1580 SdHoareTripleChecker+Invalid, 2166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 2071 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-04-07 00:44:53,174 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [235 Valid, 1580 Invalid, 2166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 2071 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-04-07 00:44:53,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 632 states. [2022-04-07 00:44:53,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 632 to 585. [2022-04-07 00:44:53,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 585 states, 468 states have (on average 1.2115384615384615) internal successors, (567), 476 states have internal predecessors, (567), 64 states have call successors, (64), 48 states have call predecessors, (64), 52 states have return successors, (73), 61 states have call predecessors, (73), 57 states have call successors, (73) [2022-04-07 00:44:53,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 585 states to 585 states and 704 transitions. [2022-04-07 00:44:53,304 INFO L78 Accepts]: Start accepts. Automaton has 585 states and 704 transitions. Word has length 60 [2022-04-07 00:44:53,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 00:44:53,305 INFO L478 AbstractCegarLoop]: Abstraction has 585 states and 704 transitions. [2022-04-07 00:44:53,305 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.4285714285714284) internal successors, (48), 7 states have internal predecessors, (48), 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) [2022-04-07 00:44:53,305 INFO L276 IsEmpty]: Start isEmpty. Operand 585 states and 704 transitions. [2022-04-07 00:44:53,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-04-07 00:44:53,313 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 00:44:53,313 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-07 00:44:53,313 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-04-07 00:44:53,313 INFO L403 AbstractCegarLoop]: === Iteration 29 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 00:44:53,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 00:44:53,314 INFO L85 PathProgramCache]: Analyzing trace with hash -404247293, now seen corresponding path program 1 times [2022-04-07 00:44:53,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 00:44:53,314 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1931837694] [2022-04-07 00:44:53,314 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-07 00:44:53,314 INFO L85 PathProgramCache]: Analyzing trace with hash -404247293, now seen corresponding path program 2 times [2022-04-07 00:44:53,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 00:44:53,314 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920102107] [2022-04-07 00:44:53,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 00:44:53,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 00:44:53,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:53,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 00:44:53,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:53,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-07 00:44:53,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:53,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-07 00:44:53,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:53,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-04-07 00:44:53,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:53,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-07 00:44:53,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:53,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 00:44:53,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:53,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-04-07 00:44:53,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:53,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 00:44:53,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 00:44:53,503 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920102107] [2022-04-07 00:44:53,503 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [920102107] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:44:53,503 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:44:53,503 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-04-07 00:44:53,503 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 00:44:53,503 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1931837694] [2022-04-07 00:44:53,503 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1931837694] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:44:53,503 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:44:53,503 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-04-07 00:44:53,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715549656] [2022-04-07 00:44:53,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 00:44:53,504 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-04-07 00:44:53,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 00:44:53,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-04-07 00:44:53,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2022-04-07 00:44:53,504 INFO L87 Difference]: Start difference. First operand 585 states and 704 transitions. Second operand has 12 states, 12 states have (on average 4.166666666666667) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (11), 8 states have call predecessors, (11), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2022-04-07 00:44:54,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 00:44:54,369 INFO L93 Difference]: Finished difference Result 895 states and 1087 transitions. [2022-04-07 00:44:54,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-04-07 00:44:54,370 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.166666666666667) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (11), 8 states have call predecessors, (11), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) Word has length 68 [2022-04-07 00:44:54,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 00:44:54,372 INFO L225 Difference]: With dead ends: 895 [2022-04-07 00:44:54,372 INFO L226 Difference]: Without dead ends: 669 [2022-04-07 00:44:54,389 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2022-04-07 00:44:54,393 INFO L913 BasicCegarLoop]: 328 mSDtfsCounter, 337 mSDsluCounter, 928 mSDsCounter, 0 mSdLazyCounter, 1162 mSolverCounterSat, 121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 345 SdHoareTripleChecker+Valid, 1256 SdHoareTripleChecker+Invalid, 1283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 121 IncrementalHoareTripleChecker+Valid, 1162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-04-07 00:44:54,393 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [345 Valid, 1256 Invalid, 1283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [121 Valid, 1162 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-04-07 00:44:54,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 669 states. [2022-04-07 00:44:54,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 669 to 585. [2022-04-07 00:44:54,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 585 states, 468 states have (on average 1.2072649572649572) internal successors, (565), 476 states have internal predecessors, (565), 64 states have call successors, (64), 48 states have call predecessors, (64), 52 states have return successors, (73), 61 states have call predecessors, (73), 57 states have call successors, (73) [2022-04-07 00:44:54,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 585 states to 585 states and 702 transitions. [2022-04-07 00:44:54,546 INFO L78 Accepts]: Start accepts. Automaton has 585 states and 702 transitions. Word has length 68 [2022-04-07 00:44:54,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 00:44:54,546 INFO L478 AbstractCegarLoop]: Abstraction has 585 states and 702 transitions. [2022-04-07 00:44:54,552 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.166666666666667) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (11), 8 states have call predecessors, (11), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2022-04-07 00:44:54,552 INFO L276 IsEmpty]: Start isEmpty. Operand 585 states and 702 transitions. [2022-04-07 00:44:54,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-04-07 00:44:54,553 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 00:44:54,553 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-07 00:44:54,553 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-04-07 00:44:54,553 INFO L403 AbstractCegarLoop]: === Iteration 30 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 00:44:54,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 00:44:54,554 INFO L85 PathProgramCache]: Analyzing trace with hash 1830326818, now seen corresponding path program 1 times [2022-04-07 00:44:54,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 00:44:54,554 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1964232562] [2022-04-07 00:44:54,554 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-07 00:44:54,554 INFO L85 PathProgramCache]: Analyzing trace with hash 1830326818, now seen corresponding path program 2 times [2022-04-07 00:44:54,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 00:44:54,554 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302354028] [2022-04-07 00:44:54,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 00:44:54,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 00:44:54,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:54,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 00:44:54,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:54,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-07 00:44:54,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:54,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-07 00:44:54,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:54,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-07 00:44:54,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:54,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-04-07 00:44:54,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:54,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 00:44:54,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 00:44:54,734 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302354028] [2022-04-07 00:44:54,735 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1302354028] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:44:54,735 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:44:54,735 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-04-07 00:44:54,735 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 00:44:54,735 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1964232562] [2022-04-07 00:44:54,735 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1964232562] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:44:54,735 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:44:54,735 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-04-07 00:44:54,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861945894] [2022-04-07 00:44:54,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 00:44:54,735 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-04-07 00:44:54,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 00:44:54,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-04-07 00:44:54,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2022-04-07 00:44:54,736 INFO L87 Difference]: Start difference. First operand 585 states and 702 transitions. Second operand has 14 states, 14 states have (on average 3.5) internal successors, (49), 7 states have internal predecessors, (49), 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) [2022-04-07 00:44:55,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 00:44:55,616 INFO L93 Difference]: Finished difference Result 649 states and 776 transitions. [2022-04-07 00:44:55,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-04-07 00:44:55,617 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.5) internal successors, (49), 7 states have internal predecessors, (49), 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 61 [2022-04-07 00:44:55,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 00:44:55,619 INFO L225 Difference]: With dead ends: 649 [2022-04-07 00:44:55,619 INFO L226 Difference]: Without dead ends: 627 [2022-04-07 00:44:55,619 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2022-04-07 00:44:55,619 INFO L913 BasicCegarLoop]: 321 mSDtfsCounter, 438 mSDsluCounter, 1219 mSDsCounter, 0 mSdLazyCounter, 1797 mSolverCounterSat, 177 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 441 SdHoareTripleChecker+Valid, 1540 SdHoareTripleChecker+Invalid, 1974 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 177 IncrementalHoareTripleChecker+Valid, 1797 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-04-07 00:44:55,619 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [441 Valid, 1540 Invalid, 1974 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [177 Valid, 1797 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-04-07 00:44:55,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 627 states. [2022-04-07 00:44:55,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 627 to 580. [2022-04-07 00:44:55,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 580 states, 464 states have (on average 1.206896551724138) internal successors, (560), 472 states have internal predecessors, (560), 63 states have call successors, (63), 48 states have call predecessors, (63), 52 states have return successors, (72), 60 states have call predecessors, (72), 56 states have call successors, (72) [2022-04-07 00:44:55,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 580 states to 580 states and 695 transitions. [2022-04-07 00:44:55,759 INFO L78 Accepts]: Start accepts. Automaton has 580 states and 695 transitions. Word has length 61 [2022-04-07 00:44:55,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 00:44:55,759 INFO L478 AbstractCegarLoop]: Abstraction has 580 states and 695 transitions. [2022-04-07 00:44:55,759 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.5) internal successors, (49), 7 states have internal predecessors, (49), 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) [2022-04-07 00:44:55,759 INFO L276 IsEmpty]: Start isEmpty. Operand 580 states and 695 transitions. [2022-04-07 00:44:55,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-04-07 00:44:55,760 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 00:44:55,760 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-07 00:44:55,760 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-04-07 00:44:55,760 INFO L403 AbstractCegarLoop]: === Iteration 31 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 00:44:55,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 00:44:55,761 INFO L85 PathProgramCache]: Analyzing trace with hash 900215348, now seen corresponding path program 1 times [2022-04-07 00:44:55,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 00:44:55,761 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [488267556] [2022-04-07 00:44:55,761 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-07 00:44:55,761 INFO L85 PathProgramCache]: Analyzing trace with hash 900215348, now seen corresponding path program 2 times [2022-04-07 00:44:55,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 00:44:55,761 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635109432] [2022-04-07 00:44:55,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 00:44:55,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 00:44:55,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:55,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 00:44:55,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:55,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-07 00:44:55,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:55,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-07 00:44:55,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:55,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-07 00:44:56,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:56,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-04-07 00:44:56,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:56,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 00:44:56,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 00:44:56,050 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635109432] [2022-04-07 00:44:56,050 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1635109432] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:44:56,050 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:44:56,051 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-04-07 00:44:56,051 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 00:44:56,051 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [488267556] [2022-04-07 00:44:56,051 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [488267556] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:44:56,051 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:44:56,051 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-04-07 00:44:56,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626755082] [2022-04-07 00:44:56,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 00:44:56,051 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-04-07 00:44:56,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 00:44:56,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-04-07 00:44:56,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2022-04-07 00:44:56,052 INFO L87 Difference]: Start difference. First operand 580 states and 695 transitions. Second operand has 14 states, 14 states have (on average 3.5) internal successors, (49), 7 states have internal predecessors, (49), 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) [2022-04-07 00:44:56,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 00:44:56,782 INFO L93 Difference]: Finished difference Result 644 states and 769 transitions. [2022-04-07 00:44:56,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-04-07 00:44:56,782 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.5) internal successors, (49), 7 states have internal predecessors, (49), 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 61 [2022-04-07 00:44:56,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 00:44:56,784 INFO L225 Difference]: With dead ends: 644 [2022-04-07 00:44:56,784 INFO L226 Difference]: Without dead ends: 623 [2022-04-07 00:44:56,785 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2022-04-07 00:44:56,785 INFO L913 BasicCegarLoop]: 315 mSDtfsCounter, 353 mSDsluCounter, 1195 mSDsCounter, 0 mSdLazyCounter, 1761 mSolverCounterSat, 137 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 356 SdHoareTripleChecker+Valid, 1510 SdHoareTripleChecker+Invalid, 1898 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 137 IncrementalHoareTripleChecker+Valid, 1761 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-04-07 00:44:56,785 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [356 Valid, 1510 Invalid, 1898 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [137 Valid, 1761 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-04-07 00:44:56,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 623 states. [2022-04-07 00:44:56,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 623 to 576. [2022-04-07 00:44:56,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 576 states, 461 states have (on average 1.2060737527114966) internal successors, (556), 469 states have internal predecessors, (556), 62 states have call successors, (62), 48 states have call predecessors, (62), 52 states have return successors, (71), 59 states have call predecessors, (71), 55 states have call successors, (71) [2022-04-07 00:44:56,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 576 states to 576 states and 689 transitions. [2022-04-07 00:44:56,920 INFO L78 Accepts]: Start accepts. Automaton has 576 states and 689 transitions. Word has length 61 [2022-04-07 00:44:56,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 00:44:56,920 INFO L478 AbstractCegarLoop]: Abstraction has 576 states and 689 transitions. [2022-04-07 00:44:56,920 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.5) internal successors, (49), 7 states have internal predecessors, (49), 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) [2022-04-07 00:44:56,920 INFO L276 IsEmpty]: Start isEmpty. Operand 576 states and 689 transitions. [2022-04-07 00:44:56,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-04-07 00:44:56,921 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 00:44:56,921 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-07 00:44:56,921 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-04-07 00:44:56,921 INFO L403 AbstractCegarLoop]: === Iteration 32 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 00:44:56,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 00:44:56,921 INFO L85 PathProgramCache]: Analyzing trace with hash 888922982, now seen corresponding path program 1 times [2022-04-07 00:44:56,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 00:44:56,922 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1619419849] [2022-04-07 00:44:56,922 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-07 00:44:56,922 INFO L85 PathProgramCache]: Analyzing trace with hash 888922982, now seen corresponding path program 2 times [2022-04-07 00:44:56,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 00:44:56,922 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953711586] [2022-04-07 00:44:56,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 00:44:56,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 00:44:56,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:56,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 00:44:56,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:57,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-07 00:44:57,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:57,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-07 00:44:57,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:57,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-04-07 00:44:57,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:57,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-07 00:44:57,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:57,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 00:44:57,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:57,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-04-07 00:44:57,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:57,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 00:44:57,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 00:44:57,054 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953711586] [2022-04-07 00:44:57,054 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1953711586] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:44:57,054 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:44:57,054 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-04-07 00:44:57,054 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 00:44:57,054 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1619419849] [2022-04-07 00:44:57,055 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1619419849] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:44:57,055 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:44:57,055 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-04-07 00:44:57,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615260323] [2022-04-07 00:44:57,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 00:44:57,056 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-04-07 00:44:57,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 00:44:57,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-04-07 00:44:57,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2022-04-07 00:44:57,056 INFO L87 Difference]: Start difference. First operand 576 states and 689 transitions. Second operand has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 3 states have internal predecessors, (48), 3 states have call successors, (12), 9 states have call predecessors, (12), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-04-07 00:44:57,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 00:44:57,879 INFO L93 Difference]: Finished difference Result 1020 states and 1238 transitions. [2022-04-07 00:44:57,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-04-07 00:44:57,879 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 3 states have internal predecessors, (48), 3 states have call successors, (12), 9 states have call predecessors, (12), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 67 [2022-04-07 00:44:57,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 00:44:57,882 INFO L225 Difference]: With dead ends: 1020 [2022-04-07 00:44:57,882 INFO L226 Difference]: Without dead ends: 767 [2022-04-07 00:44:57,884 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 12 SyntacticMatches, 3 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=99, Unknown=0, NotChecked=0, Total=156 [2022-04-07 00:44:57,884 INFO L913 BasicCegarLoop]: 367 mSDtfsCounter, 464 mSDsluCounter, 520 mSDsCounter, 0 mSdLazyCounter, 749 mSolverCounterSat, 146 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 475 SdHoareTripleChecker+Valid, 887 SdHoareTripleChecker+Invalid, 895 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 146 IncrementalHoareTripleChecker+Valid, 749 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-04-07 00:44:57,884 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [475 Valid, 887 Invalid, 895 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [146 Valid, 749 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-04-07 00:44:57,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 767 states. [2022-04-07 00:44:58,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 767 to 697. [2022-04-07 00:44:58,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 697 states, 554 states have (on average 1.2021660649819494) internal successors, (666), 564 states have internal predecessors, (666), 75 states have call successors, (75), 58 states have call predecessors, (75), 67 states have return successors, (96), 75 states have call predecessors, (96), 69 states have call successors, (96) [2022-04-07 00:44:58,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 697 states to 697 states and 837 transitions. [2022-04-07 00:44:58,185 INFO L78 Accepts]: Start accepts. Automaton has 697 states and 837 transitions. Word has length 67 [2022-04-07 00:44:58,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 00:44:58,185 INFO L478 AbstractCegarLoop]: Abstraction has 697 states and 837 transitions. [2022-04-07 00:44:58,186 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 3 states have internal predecessors, (48), 3 states have call successors, (12), 9 states have call predecessors, (12), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-04-07 00:44:58,186 INFO L276 IsEmpty]: Start isEmpty. Operand 697 states and 837 transitions. [2022-04-07 00:44:58,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-04-07 00:44:58,186 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 00:44:58,186 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-07 00:44:58,187 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-04-07 00:44:58,187 INFO L403 AbstractCegarLoop]: === Iteration 33 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 00:44:58,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 00:44:58,187 INFO L85 PathProgramCache]: Analyzing trace with hash 1259626467, now seen corresponding path program 1 times [2022-04-07 00:44:58,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 00:44:58,187 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1631734723] [2022-04-07 00:44:58,187 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-07 00:44:58,187 INFO L85 PathProgramCache]: Analyzing trace with hash 1259626467, now seen corresponding path program 2 times [2022-04-07 00:44:58,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 00:44:58,187 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444045833] [2022-04-07 00:44:58,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 00:44:58,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 00:44:58,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:58,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 00:44:58,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:58,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-07 00:44:58,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:58,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-07 00:44:58,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:58,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-07 00:44:58,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:58,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-04-07 00:44:58,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:58,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 00:44:58,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 00:44:58,337 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444045833] [2022-04-07 00:44:58,337 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [444045833] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:44:58,337 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:44:58,337 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-04-07 00:44:58,337 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 00:44:58,337 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1631734723] [2022-04-07 00:44:58,337 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1631734723] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:44:58,337 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:44:58,337 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-04-07 00:44:58,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257776807] [2022-04-07 00:44:58,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 00:44:58,338 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-04-07 00:44:58,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 00:44:58,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-04-07 00:44:58,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2022-04-07 00:44:58,338 INFO L87 Difference]: Start difference. First operand 697 states and 837 transitions. Second operand has 14 states, 14 states have (on average 3.7857142857142856) internal successors, (53), 7 states have internal predecessors, (53), 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) [2022-04-07 00:44:59,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 00:44:59,180 INFO L93 Difference]: Finished difference Result 761 states and 912 transitions. [2022-04-07 00:44:59,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-04-07 00:44:59,181 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.7857142857142856) internal successors, (53), 7 states have internal predecessors, (53), 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 65 [2022-04-07 00:44:59,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 00:44:59,183 INFO L225 Difference]: With dead ends: 761 [2022-04-07 00:44:59,183 INFO L226 Difference]: Without dead ends: 718 [2022-04-07 00:44:59,184 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2022-04-07 00:44:59,184 INFO L913 BasicCegarLoop]: 307 mSDtfsCounter, 384 mSDsluCounter, 1112 mSDsCounter, 0 mSdLazyCounter, 1645 mSolverCounterSat, 137 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 389 SdHoareTripleChecker+Valid, 1419 SdHoareTripleChecker+Invalid, 1782 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 137 IncrementalHoareTripleChecker+Valid, 1645 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-04-07 00:44:59,184 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [389 Valid, 1419 Invalid, 1782 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [137 Valid, 1645 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-04-07 00:44:59,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 718 states. [2022-04-07 00:44:59,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 718 to 671. [2022-04-07 00:44:59,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 671 states, 533 states have (on average 1.200750469043152) internal successors, (640), 543 states have internal predecessors, (640), 72 states have call successors, (72), 56 states have call predecessors, (72), 65 states have return successors, (93), 72 states have call predecessors, (93), 66 states have call successors, (93) [2022-04-07 00:44:59,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 671 states to 671 states and 805 transitions. [2022-04-07 00:44:59,331 INFO L78 Accepts]: Start accepts. Automaton has 671 states and 805 transitions. Word has length 65 [2022-04-07 00:44:59,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 00:44:59,335 INFO L478 AbstractCegarLoop]: Abstraction has 671 states and 805 transitions. [2022-04-07 00:44:59,335 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.7857142857142856) internal successors, (53), 7 states have internal predecessors, (53), 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) [2022-04-07 00:44:59,335 INFO L276 IsEmpty]: Start isEmpty. Operand 671 states and 805 transitions. [2022-04-07 00:44:59,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-04-07 00:44:59,336 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 00:44:59,336 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-07 00:44:59,336 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-04-07 00:44:59,336 INFO L403 AbstractCegarLoop]: === Iteration 34 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 00:44:59,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 00:44:59,337 INFO L85 PathProgramCache]: Analyzing trace with hash -2061698465, now seen corresponding path program 1 times [2022-04-07 00:44:59,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 00:44:59,337 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [954590358] [2022-04-07 00:44:59,337 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-07 00:44:59,337 INFO L85 PathProgramCache]: Analyzing trace with hash -2061698465, now seen corresponding path program 2 times [2022-04-07 00:44:59,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 00:44:59,337 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742363279] [2022-04-07 00:44:59,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 00:44:59,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 00:44:59,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:59,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 00:44:59,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:59,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-07 00:44:59,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:59,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-07 00:44:59,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:59,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-04-07 00:44:59,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:59,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-07 00:44:59,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:59,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 00:44:59,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:59,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-04-07 00:44:59,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:59,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-04-07 00:44:59,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:59,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 00:44:59,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 00:44:59,499 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742363279] [2022-04-07 00:44:59,499 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [742363279] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:44:59,499 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:44:59,499 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-04-07 00:44:59,499 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 00:44:59,499 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [954590358] [2022-04-07 00:44:59,499 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [954590358] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:44:59,499 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:44:59,500 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-04-07 00:44:59,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6967400] [2022-04-07 00:44:59,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 00:44:59,500 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-04-07 00:44:59,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 00:44:59,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-04-07 00:44:59,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2022-04-07 00:44:59,500 INFO L87 Difference]: Start difference. First operand 671 states and 805 transitions. Second operand has 11 states, 11 states have (on average 5.363636363636363) internal successors, (59), 5 states have internal predecessors, (59), 3 states have call successors, (12), 9 states have call predecessors, (12), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-04-07 00:45:00,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 00:45:00,165 INFO L93 Difference]: Finished difference Result 1023 states and 1237 transitions. [2022-04-07 00:45:00,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-04-07 00:45:00,165 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.363636363636363) internal successors, (59), 5 states have internal predecessors, (59), 3 states have call successors, (12), 9 states have call predecessors, (12), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 79 [2022-04-07 00:45:00,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 00:45:00,167 INFO L225 Difference]: With dead ends: 1023 [2022-04-07 00:45:00,167 INFO L226 Difference]: Without dead ends: 706 [2022-04-07 00:45:00,168 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=110, Invalid=232, Unknown=0, NotChecked=0, Total=342 [2022-04-07 00:45:00,169 INFO L913 BasicCegarLoop]: 402 mSDtfsCounter, 458 mSDsluCounter, 727 mSDsCounter, 0 mSdLazyCounter, 806 mSolverCounterSat, 136 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 465 SdHoareTripleChecker+Valid, 1129 SdHoareTripleChecker+Invalid, 942 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 136 IncrementalHoareTripleChecker+Valid, 806 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-04-07 00:45:00,169 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [465 Valid, 1129 Invalid, 942 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [136 Valid, 806 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-04-07 00:45:00,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 706 states. [2022-04-07 00:45:00,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 706 to 653. [2022-04-07 00:45:00,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 653 states, 519 states have (on average 1.2003853564547207) internal successors, (623), 528 states have internal predecessors, (623), 70 states have call successors, (70), 56 states have call predecessors, (70), 63 states have return successors, (82), 69 states have call predecessors, (82), 64 states have call successors, (82) [2022-04-07 00:45:00,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 653 states to 653 states and 775 transitions. [2022-04-07 00:45:00,313 INFO L78 Accepts]: Start accepts. Automaton has 653 states and 775 transitions. Word has length 79 [2022-04-07 00:45:00,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 00:45:00,314 INFO L478 AbstractCegarLoop]: Abstraction has 653 states and 775 transitions. [2022-04-07 00:45:00,314 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.363636363636363) internal successors, (59), 5 states have internal predecessors, (59), 3 states have call successors, (12), 9 states have call predecessors, (12), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-04-07 00:45:00,314 INFO L276 IsEmpty]: Start isEmpty. Operand 653 states and 775 transitions. [2022-04-07 00:45:00,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-04-07 00:45:00,315 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 00:45:00,315 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-07 00:45:00,315 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-04-07 00:45:00,315 INFO L403 AbstractCegarLoop]: === Iteration 35 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 00:45:00,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 00:45:00,315 INFO L85 PathProgramCache]: Analyzing trace with hash -1335445745, now seen corresponding path program 1 times [2022-04-07 00:45:00,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 00:45:00,315 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [582981522] [2022-04-07 00:45:00,315 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-07 00:45:00,315 INFO L85 PathProgramCache]: Analyzing trace with hash -1335445745, now seen corresponding path program 2 times [2022-04-07 00:45:00,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 00:45:00,316 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707681580] [2022-04-07 00:45:00,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 00:45:00,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 00:45:00,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:00,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 00:45:00,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:00,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-07 00:45:00,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:00,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-07 00:45:00,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:00,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-04-07 00:45:00,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:00,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-07 00:45:00,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:00,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 00:45:00,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:00,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-04-07 00:45:00,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:00,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-04-07 00:45:00,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:00,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 00:45:00,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:00,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 00:45:00,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 00:45:00,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707681580] [2022-04-07 00:45:00,487 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [707681580] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:45:00,487 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:45:00,487 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-04-07 00:45:00,487 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 00:45:00,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [582981522] [2022-04-07 00:45:00,488 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [582981522] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:45:00,488 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:45:00,488 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-04-07 00:45:00,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063674969] [2022-04-07 00:45:00,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 00:45:00,488 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-04-07 00:45:00,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 00:45:00,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-04-07 00:45:00,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2022-04-07 00:45:00,488 INFO L87 Difference]: Start difference. First operand 653 states and 775 transitions. Second operand has 14 states, 14 states have (on average 4.071428571428571) internal successors, (57), 5 states have internal predecessors, (57), 2 states have call successors, (14), 10 states have call predecessors, (14), 2 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2022-04-07 00:45:01,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 00:45:01,326 INFO L93 Difference]: Finished difference Result 1058 states and 1297 transitions. [2022-04-07 00:45:01,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-04-07 00:45:01,327 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.071428571428571) internal successors, (57), 5 states have internal predecessors, (57), 2 states have call successors, (14), 10 states have call predecessors, (14), 2 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) Word has length 80 [2022-04-07 00:45:01,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 00:45:01,330 INFO L225 Difference]: With dead ends: 1058 [2022-04-07 00:45:01,330 INFO L226 Difference]: Without dead ends: 804 [2022-04-07 00:45:01,331 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=115, Invalid=391, Unknown=0, NotChecked=0, Total=506 [2022-04-07 00:45:01,331 INFO L913 BasicCegarLoop]: 353 mSDtfsCounter, 470 mSDsluCounter, 1124 mSDsCounter, 0 mSdLazyCounter, 1264 mSolverCounterSat, 157 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 481 SdHoareTripleChecker+Valid, 1477 SdHoareTripleChecker+Invalid, 1421 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 157 IncrementalHoareTripleChecker+Valid, 1264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-04-07 00:45:01,331 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [481 Valid, 1477 Invalid, 1421 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [157 Valid, 1264 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-04-07 00:45:01,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 804 states. [2022-04-07 00:45:01,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 804 to 617. [2022-04-07 00:45:01,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 617 states, 495 states have (on average 1.2) internal successors, (594), 502 states have internal predecessors, (594), 63 states have call successors, (63), 50 states have call predecessors, (63), 58 states have return successors, (72), 65 states have call predecessors, (72), 58 states have call successors, (72) [2022-04-07 00:45:01,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 617 states to 617 states and 729 transitions. [2022-04-07 00:45:01,495 INFO L78 Accepts]: Start accepts. Automaton has 617 states and 729 transitions. Word has length 80 [2022-04-07 00:45:01,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 00:45:01,497 INFO L478 AbstractCegarLoop]: Abstraction has 617 states and 729 transitions. [2022-04-07 00:45:01,497 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.071428571428571) internal successors, (57), 5 states have internal predecessors, (57), 2 states have call successors, (14), 10 states have call predecessors, (14), 2 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2022-04-07 00:45:01,497 INFO L276 IsEmpty]: Start isEmpty. Operand 617 states and 729 transitions. [2022-04-07 00:45:01,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-04-07 00:45:01,498 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 00:45:01,498 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-07 00:45:01,498 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-04-07 00:45:01,498 INFO L403 AbstractCegarLoop]: === Iteration 36 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 00:45:01,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 00:45:01,499 INFO L85 PathProgramCache]: Analyzing trace with hash 510679092, now seen corresponding path program 1 times [2022-04-07 00:45:01,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 00:45:01,499 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [26670123] [2022-04-07 00:45:01,499 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-07 00:45:01,499 INFO L85 PathProgramCache]: Analyzing trace with hash 510679092, now seen corresponding path program 2 times [2022-04-07 00:45:01,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 00:45:01,499 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188344690] [2022-04-07 00:45:01,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 00:45:01,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 00:45:01,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:01,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 00:45:01,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:01,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-07 00:45:01,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:01,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-07 00:45:01,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:01,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-07 00:45:01,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:01,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-04-07 00:45:01,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:01,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-07 00:45:01,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:01,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 00:45:01,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:01,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-04-07 00:45:01,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:01,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-04-07 00:45:01,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:01,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 00:45:01,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 00:45:01,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188344690] [2022-04-07 00:45:01,745 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [188344690] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:45:01,745 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:45:01,745 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-04-07 00:45:01,745 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 00:45:01,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [26670123] [2022-04-07 00:45:01,745 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [26670123] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:45:01,745 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:45:01,745 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-04-07 00:45:01,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154528053] [2022-04-07 00:45:01,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 00:45:01,746 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-04-07 00:45:01,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 00:45:01,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-04-07 00:45:01,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2022-04-07 00:45:01,746 INFO L87 Difference]: Start difference. First operand 617 states and 729 transitions. Second operand has 16 states, 16 states have (on average 4.0625) internal successors, (65), 7 states have internal predecessors, (65), 3 states have call successors, (11), 9 states have call predecessors, (11), 3 states have return successors, (9), 4 states have call predecessors, (9), 2 states have call successors, (9) [2022-04-07 00:45:02,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 00:45:02,711 INFO L93 Difference]: Finished difference Result 727 states and 856 transitions. [2022-04-07 00:45:02,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-04-07 00:45:02,711 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.0625) internal successors, (65), 7 states have internal predecessors, (65), 3 states have call successors, (11), 9 states have call predecessors, (11), 3 states have return successors, (9), 4 states have call predecessors, (9), 2 states have call successors, (9) Word has length 85 [2022-04-07 00:45:02,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 00:45:02,713 INFO L225 Difference]: With dead ends: 727 [2022-04-07 00:45:02,713 INFO L226 Difference]: Without dead ends: 706 [2022-04-07 00:45:02,714 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=101, Invalid=499, Unknown=0, NotChecked=0, Total=600 [2022-04-07 00:45:02,714 INFO L913 BasicCegarLoop]: 302 mSDtfsCounter, 456 mSDsluCounter, 1360 mSDsCounter, 0 mSdLazyCounter, 1614 mSolverCounterSat, 177 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 464 SdHoareTripleChecker+Valid, 1662 SdHoareTripleChecker+Invalid, 1791 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 177 IncrementalHoareTripleChecker+Valid, 1614 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-04-07 00:45:02,714 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [464 Valid, 1662 Invalid, 1791 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [177 Valid, 1614 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-04-07 00:45:02,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 706 states. [2022-04-07 00:45:02,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 706 to 625. [2022-04-07 00:45:02,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 625 states, 502 states have (on average 1.197211155378486) internal successors, (601), 509 states have internal predecessors, (601), 63 states have call successors, (63), 50 states have call predecessors, (63), 59 states have return successors, (75), 66 states have call predecessors, (75), 58 states have call successors, (75) [2022-04-07 00:45:02,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 625 states to 625 states and 739 transitions. [2022-04-07 00:45:02,902 INFO L78 Accepts]: Start accepts. Automaton has 625 states and 739 transitions. Word has length 85 [2022-04-07 00:45:02,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 00:45:02,903 INFO L478 AbstractCegarLoop]: Abstraction has 625 states and 739 transitions. [2022-04-07 00:45:02,903 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.0625) internal successors, (65), 7 states have internal predecessors, (65), 3 states have call successors, (11), 9 states have call predecessors, (11), 3 states have return successors, (9), 4 states have call predecessors, (9), 2 states have call successors, (9) [2022-04-07 00:45:02,903 INFO L276 IsEmpty]: Start isEmpty. Operand 625 states and 739 transitions. [2022-04-07 00:45:02,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-04-07 00:45:02,905 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 00:45:02,905 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-07 00:45:02,905 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-04-07 00:45:02,905 INFO L403 AbstractCegarLoop]: === Iteration 37 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 00:45:02,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 00:45:02,905 INFO L85 PathProgramCache]: Analyzing trace with hash 297903782, now seen corresponding path program 1 times [2022-04-07 00:45:02,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 00:45:02,905 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1933531679] [2022-04-07 00:45:02,906 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-07 00:45:02,906 INFO L85 PathProgramCache]: Analyzing trace with hash 297903782, now seen corresponding path program 2 times [2022-04-07 00:45:02,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 00:45:02,906 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960213669] [2022-04-07 00:45:02,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 00:45:02,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 00:45:02,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:03,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 00:45:03,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:03,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-07 00:45:03,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:03,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-07 00:45:03,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:03,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-07 00:45:03,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:03,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-04-07 00:45:03,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:03,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-07 00:45:03,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:03,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 00:45:03,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:03,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-04-07 00:45:03,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:03,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-04-07 00:45:03,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:03,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 00:45:03,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 00:45:03,156 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960213669] [2022-04-07 00:45:03,156 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [960213669] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:45:03,156 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:45:03,157 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-04-07 00:45:03,157 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 00:45:03,157 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1933531679] [2022-04-07 00:45:03,157 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1933531679] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:45:03,157 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:45:03,157 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-04-07 00:45:03,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846163439] [2022-04-07 00:45:03,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 00:45:03,158 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-04-07 00:45:03,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 00:45:03,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-04-07 00:45:03,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2022-04-07 00:45:03,159 INFO L87 Difference]: Start difference. First operand 625 states and 739 transitions. Second operand has 16 states, 16 states have (on average 4.125) internal successors, (66), 7 states have internal predecessors, (66), 3 states have call successors, (11), 9 states have call predecessors, (11), 3 states have return successors, (9), 4 states have call predecessors, (9), 2 states have call successors, (9) [2022-04-07 00:45:04,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 00:45:04,329 INFO L93 Difference]: Finished difference Result 727 states and 855 transitions. [2022-04-07 00:45:04,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-04-07 00:45:04,329 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.125) internal successors, (66), 7 states have internal predecessors, (66), 3 states have call successors, (11), 9 states have call predecessors, (11), 3 states have return successors, (9), 4 states have call predecessors, (9), 2 states have call successors, (9) Word has length 86 [2022-04-07 00:45:04,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 00:45:04,331 INFO L225 Difference]: With dead ends: 727 [2022-04-07 00:45:04,331 INFO L226 Difference]: Without dead ends: 706 [2022-04-07 00:45:04,332 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=78, Invalid=342, Unknown=0, NotChecked=0, Total=420 [2022-04-07 00:45:04,332 INFO L913 BasicCegarLoop]: 318 mSDtfsCounter, 222 mSDsluCounter, 1494 mSDsCounter, 0 mSdLazyCounter, 1963 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 226 SdHoareTripleChecker+Valid, 1812 SdHoareTripleChecker+Invalid, 2034 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 1963 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-04-07 00:45:04,332 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [226 Valid, 1812 Invalid, 2034 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 1963 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-04-07 00:45:04,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 706 states. [2022-04-07 00:45:04,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 706 to 617. [2022-04-07 00:45:04,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 617 states, 495 states have (on average 1.197979797979798) internal successors, (593), 502 states have internal predecessors, (593), 63 states have call successors, (63), 50 states have call predecessors, (63), 58 states have return successors, (72), 65 states have call predecessors, (72), 58 states have call successors, (72) [2022-04-07 00:45:04,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 617 states to 617 states and 728 transitions. [2022-04-07 00:45:04,472 INFO L78 Accepts]: Start accepts. Automaton has 617 states and 728 transitions. Word has length 86 [2022-04-07 00:45:04,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 00:45:04,473 INFO L478 AbstractCegarLoop]: Abstraction has 617 states and 728 transitions. [2022-04-07 00:45:04,473 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.125) internal successors, (66), 7 states have internal predecessors, (66), 3 states have call successors, (11), 9 states have call predecessors, (11), 3 states have return successors, (9), 4 states have call predecessors, (9), 2 states have call successors, (9) [2022-04-07 00:45:04,473 INFO L276 IsEmpty]: Start isEmpty. Operand 617 states and 728 transitions. [2022-04-07 00:45:04,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-04-07 00:45:04,473 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 00:45:04,474 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-07 00:45:04,474 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-04-07 00:45:04,474 INFO L403 AbstractCegarLoop]: === Iteration 38 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 00:45:04,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 00:45:04,474 INFO L85 PathProgramCache]: Analyzing trace with hash -973728084, now seen corresponding path program 1 times [2022-04-07 00:45:04,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 00:45:04,474 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [193075641] [2022-04-07 00:45:04,474 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-07 00:45:04,474 INFO L85 PathProgramCache]: Analyzing trace with hash -973728084, now seen corresponding path program 2 times [2022-04-07 00:45:04,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 00:45:04,475 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319819898] [2022-04-07 00:45:04,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 00:45:04,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 00:45:04,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:04,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 00:45:04,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:04,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-07 00:45:04,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:04,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-07 00:45:04,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:04,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-07 00:45:04,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:04,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-04-07 00:45:04,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:04,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-07 00:45:04,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:04,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-04-07 00:45:04,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:04,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 00:45:04,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 00:45:04,645 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319819898] [2022-04-07 00:45:04,645 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1319819898] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:45:04,645 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:45:04,645 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-04-07 00:45:04,645 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 00:45:04,645 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [193075641] [2022-04-07 00:45:04,645 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [193075641] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:45:04,645 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:45:04,646 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-04-07 00:45:04,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943710623] [2022-04-07 00:45:04,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 00:45:04,647 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-04-07 00:45:04,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 00:45:04,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-04-07 00:45:04,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-04-07 00:45:04,648 INFO L87 Difference]: Start difference. First operand 617 states and 728 transitions. Second operand has 12 states, 12 states have (on average 5.416666666666667) internal successors, (65), 5 states have internal predecessors, (65), 5 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) [2022-04-07 00:45:05,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 00:45:05,765 INFO L93 Difference]: Finished difference Result 1164 states and 1359 transitions. [2022-04-07 00:45:05,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-04-07 00:45:05,765 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.416666666666667) internal successors, (65), 5 states have internal predecessors, (65), 5 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) Word has length 81 [2022-04-07 00:45:05,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 00:45:05,767 INFO L225 Difference]: With dead ends: 1164 [2022-04-07 00:45:05,767 INFO L226 Difference]: Without dead ends: 764 [2022-04-07 00:45:05,768 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=124, Invalid=338, Unknown=0, NotChecked=0, Total=462 [2022-04-07 00:45:05,769 INFO L913 BasicCegarLoop]: 332 mSDtfsCounter, 825 mSDsluCounter, 212 mSDsCounter, 0 mSdLazyCounter, 1044 mSolverCounterSat, 272 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 832 SdHoareTripleChecker+Valid, 544 SdHoareTripleChecker+Invalid, 1316 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 272 IncrementalHoareTripleChecker+Valid, 1044 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-04-07 00:45:05,769 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [832 Valid, 544 Invalid, 1316 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [272 Valid, 1044 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-04-07 00:45:05,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 764 states. [2022-04-07 00:45:06,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 764 to 738. [2022-04-07 00:45:06,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 738 states, 592 states have (on average 1.1891891891891893) internal successors, (704), 601 states have internal predecessors, (704), 71 states have call successors, (71), 62 states have call predecessors, (71), 74 states have return successors, (84), 75 states have call predecessors, (84), 66 states have call successors, (84) [2022-04-07 00:45:06,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 738 states to 738 states and 859 transitions. [2022-04-07 00:45:06,554 INFO L78 Accepts]: Start accepts. Automaton has 738 states and 859 transitions. Word has length 81 [2022-04-07 00:45:06,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 00:45:06,554 INFO L478 AbstractCegarLoop]: Abstraction has 738 states and 859 transitions. [2022-04-07 00:45:06,555 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.416666666666667) internal successors, (65), 5 states have internal predecessors, (65), 5 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) [2022-04-07 00:45:06,555 INFO L276 IsEmpty]: Start isEmpty. Operand 738 states and 859 transitions. [2022-04-07 00:45:06,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-04-07 00:45:06,558 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 00:45:06,558 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-07 00:45:06,559 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-04-07 00:45:06,559 INFO L403 AbstractCegarLoop]: === Iteration 39 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 00:45:06,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 00:45:06,560 INFO L85 PathProgramCache]: Analyzing trace with hash -1810115048, now seen corresponding path program 1 times [2022-04-07 00:45:06,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 00:45:06,560 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [624002014] [2022-04-07 00:45:06,561 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-07 00:45:06,561 INFO L85 PathProgramCache]: Analyzing trace with hash -1810115048, now seen corresponding path program 2 times [2022-04-07 00:45:06,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 00:45:06,562 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746032308] [2022-04-07 00:45:06,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 00:45:06,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 00:45:06,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-07 00:45:06,658 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-04-07 00:45:06,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-07 00:45:06,769 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-04-07 00:45:06,769 INFO L130 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found a feasible trace [2022-04-07 00:45:06,770 INFO L618 BasicCegarLoop]: Counterexample is feasible [2022-04-07 00:45:06,773 INFO L788 garLoopResultBuilder]: Registering result UNSAFE for location errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-04-07 00:45:06,774 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-04-07 00:45:06,776 INFO L719 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2] [2022-04-07 00:45:06,779 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-04-07 00:45:06,805 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.04 12:45:06 BoogieIcfgContainer [2022-04-07 00:45:06,805 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-04-07 00:45:06,810 INFO L158 Benchmark]: Toolchain (without parser) took 54404.62ms. Allocated memory was 190.8MB in the beginning and 701.5MB in the end (delta: 510.7MB). Free memory was 136.9MB in the beginning and 369.6MB in the end (delta: -232.7MB). Peak memory consumption was 279.3MB. Max. memory is 8.0GB. [2022-04-07 00:45:06,810 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 190.8MB. Free memory is still 154.7MB. There was no memory consumed. Max. memory is 8.0GB. [2022-04-07 00:45:06,811 INFO L158 Benchmark]: CACSL2BoogieTranslator took 618.87ms. Allocated memory was 190.8MB in the beginning and 272.6MB in the end (delta: 81.8MB). Free memory was 136.7MB in the beginning and 236.9MB in the end (delta: -100.2MB). Peak memory consumption was 5.3MB. Max. memory is 8.0GB. [2022-04-07 00:45:06,812 INFO L158 Benchmark]: Boogie Preprocessor took 76.70ms. Allocated memory is still 272.6MB. Free memory was 236.9MB in the beginning and 233.8MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2022-04-07 00:45:06,812 INFO L158 Benchmark]: RCFGBuilder took 930.61ms. Allocated memory is still 272.6MB. Free memory was 233.4MB in the beginning and 193.9MB in the end (delta: 39.5MB). Peak memory consumption was 39.8MB. Max. memory is 8.0GB. [2022-04-07 00:45:06,812 INFO L158 Benchmark]: TraceAbstraction took 52774.89ms. Allocated memory was 272.6MB in the beginning and 701.5MB in the end (delta: 428.9MB). Free memory was 193.3MB in the beginning and 369.6MB in the end (delta: -176.3MB). Peak memory consumption was 254.1MB. Max. memory is 8.0GB. [2022-04-07 00:45:06,813 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 190.8MB. Free memory is still 154.7MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 618.87ms. Allocated memory was 190.8MB in the beginning and 272.6MB in the end (delta: 81.8MB). Free memory was 136.7MB in the beginning and 236.9MB in the end (delta: -100.2MB). Peak memory consumption was 5.3MB. Max. memory is 8.0GB. * Boogie Preprocessor took 76.70ms. Allocated memory is still 272.6MB. Free memory was 236.9MB in the beginning and 233.8MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * RCFGBuilder took 930.61ms. Allocated memory is still 272.6MB. Free memory was 233.4MB in the beginning and 193.9MB in the end (delta: 39.5MB). Peak memory consumption was 39.8MB. Max. memory is 8.0GB. * TraceAbstraction took 52774.89ms. Allocated memory was 272.6MB in the beginning and 701.5MB in the end (delta: 428.9MB). Free memory was 193.3MB in the beginning and 369.6MB in the end (delta: -176.3MB). Peak memory consumption was 254.1MB. 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: 65]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L36] int FloppyThread ; [L37] int KernelMode ; [L38] int Suspended ; [L39] int Executive ; [L40] int DiskController ; [L41] int FloppyDiskPeripheral ; [L42] int FlConfigCallBack ; [L43] int MaximumInterfaceType ; [L44] int MOUNTDEV_MOUNTED_DEVICE_GUID ; [L45] int myStatus ; [L46] int s ; [L47] int UNLOADED ; [L48] int NP ; [L49] int DC ; [L50] int SKIP1 ; [L51] int SKIP2 ; [L52] int MPR1 ; [L53] int MPR3 ; [L54] int IPC ; [L55] int pended ; [L56] int compRegistered ; [L57] int lowerDriverReturn ; [L58] int setEventCalled ; [L59] int customIrp ; [L91] int PagingReferenceCount = 0; [L92] int PagingMutex = 0; [L671] int status ; [L672] int irp = __VERIFIER_nondet_int() ; [L673] int pirp ; [L674] int pirp__IoStatus__Status ; [L675] int irp_choice = __VERIFIER_nondet_int() ; [L676] int devobj = __VERIFIER_nondet_int() ; [L677] int __cil_tmp8 ; [L679] FloppyThread = 0 [L680] KernelMode = 0 [L681] Suspended = 0 [L682] Executive = 0 [L683] DiskController = 0 [L684] FloppyDiskPeripheral = 0 [L685] FlConfigCallBack = 0 [L686] MaximumInterfaceType = 0 [L687] MOUNTDEV_MOUNTED_DEVICE_GUID = 0 [L688] myStatus = 0 [L689] s = 0 [L690] UNLOADED = 0 [L691] NP = 0 [L692] DC = 0 [L693] SKIP1 = 0 [L694] SKIP2 = 0 [L695] MPR1 = 0 [L696] MPR3 = 0 [L697] IPC = 0 [L698] pended = 0 [L699] compRegistered = 0 [L700] lowerDriverReturn = 0 [L701] setEventCalled = 0 [L702] customIrp = 0 [L706] status = 0 [L707] pirp = irp [L708] CALL _BLAST_init() [L74] UNLOADED = 0 [L75] NP = 1 [L76] DC = 2 [L77] SKIP1 = 3 [L78] SKIP2 = 4 [L79] MPR1 = 5 [L80] MPR3 = 6 [L81] IPC = 7 [L82] s = UNLOADED [L83] pended = 0 [L84] compRegistered = 0 [L85] lowerDriverReturn = 0 [L86] setEventCalled = 0 [L87] customIrp = 0 [L708] RET _BLAST_init() [L710] COND TRUE status >= 0 [L711] s = NP [L712] customIrp = 0 [L713] setEventCalled = customIrp [L714] lowerDriverReturn = setEventCalled [L715] compRegistered = lowerDriverReturn [L716] pended = compRegistered [L717] pirp__IoStatus__Status = 0 [L718] myStatus = 0 [L719] COND TRUE irp_choice == 0 [L720] pirp__IoStatus__Status = -1073741637 [L721] myStatus = -1073741637 [L724] CALL stub_driver_init() [L661] s = NP [L662] pended = 0 [L663] compRegistered = 0 [L664] lowerDriverReturn = 0 [L665] setEventCalled = 0 [L666] customIrp = 0 [L724] RET stub_driver_init() [L727] COND FALSE !(status < 0) [L731] int tmp_ndt_1; [L732] tmp_ndt_1 = __VERIFIER_nondet_int() [L733] COND TRUE tmp_ndt_1 == 3 [L740] CALL, EXPR FloppyPnp(devobj, pirp) [L164] int DeviceObject__DeviceExtension = __VERIFIER_nondet_int() ; [L165] int Irp__Tail__Overlay__CurrentStackLocation = __VERIFIER_nondet_int() ; [L166] int Irp__IoStatus__Information ; [L167] int Irp__IoStatus__Status ; [L168] int Irp__CurrentLocation = __VERIFIER_nondet_int() ; [L169] int disketteExtension__IsRemoved = __VERIFIER_nondet_int() ; [L170] int disketteExtension__IsStarted = __VERIFIER_nondet_int() ; [L171] int disketteExtension__TargetObject = __VERIFIER_nondet_int() ; [L172] int disketteExtension__HoldNewRequests ; [L173] int disketteExtension__FloppyThread = __VERIFIER_nondet_int() ; [L174] int disketteExtension__InterfaceString__Buffer = __VERIFIER_nondet_int() ; [L175] int disketteExtension__InterfaceString = __VERIFIER_nondet_int() ; [L176] int disketteExtension__ArcName__Length = __VERIFIER_nondet_int() ; [L177] int disketteExtension__ArcName = __VERIFIER_nondet_int() ; [L178] int irpSp__MinorFunction = __VERIFIER_nondet_int() ; [L179] int IoGetConfigurationInformation__FloppyCount = __VERIFIER_nondet_int() ; [L180] int irpSp ; [L181] int disketteExtension ; [L182] int ntStatus ; [L183] int doneEvent = __VERIFIER_nondet_int() ; [L184] int irpSp___0 ; [L185] int nextIrpSp ; [L186] int nextIrpSp__Control ; [L187] int irpSp___1 ; [L188] int irpSp__Context ; [L189] int irpSp__Control ; [L190] long __cil_tmp29 ; [L191] long __cil_tmp30 ; [L194] ntStatus = 0 [L195] PagingReferenceCount ++ [L196] COND TRUE PagingReferenceCount == 1 [L199] disketteExtension = DeviceObject__DeviceExtension [L200] irpSp = Irp__Tail__Overlay__CurrentStackLocation [L201] COND FALSE !(\read(disketteExtension__IsRemoved)) [L210] COND FALSE !(irpSp__MinorFunction == 0) [L213] COND TRUE irpSp__MinorFunction == 5 [L239] COND TRUE irpSp__MinorFunction == 5 [L242] COND FALSE !(! disketteExtension__IsStarted) [L258] disketteExtension__HoldNewRequests = 1 [L259] CALL, EXPR FlQueueIrpToThread(Irp, disketteExtension) [L101] int status ; [L102] int threadHandle = __VERIFIER_nondet_int() ; [L103] int DisketteExtension__PoweringDown = __VERIFIER_nondet_int() ; [L104] int DisketteExtension__ThreadReferenceCount = __VERIFIER_nondet_int() ; [L105] int DisketteExtension__FloppyThread = __VERIFIER_nondet_int() ; [L106] int Irp__IoStatus__Status ; [L107] int Irp__IoStatus__Information ; [L108] int Irp__Tail__Overlay__CurrentStackLocation__Control ; [L109] int ObjAttributes = __VERIFIER_nondet_int() ; [L110] int __cil_tmp12 ; [L111] int __cil_tmp13 ; [L114] COND FALSE !(DisketteExtension__PoweringDown == 1) [L120] DisketteExtension__ThreadReferenceCount ++ [L121] COND FALSE !(DisketteExtension__ThreadReferenceCount == 0) [L153] COND TRUE pended == 0 [L154] pended = 1 [L160] return (259); [L259] RET, EXPR FlQueueIrpToThread(Irp, disketteExtension) [L259] ntStatus = FlQueueIrpToThread(Irp, disketteExtension) [L262] __cil_tmp29 = (long )ntStatus [L263] COND TRUE __cil_tmp29 == 259L [L265-L266] CALL KeWaitForSingleObject(disketteExtension__FloppyThread, Executive, KernelMode, 0, 0) [L1036] COND FALSE !(s == MPR3) [L1045] COND FALSE !(customIrp == 1) [L1049] COND FALSE !(s == MPR3) [L1056] int tmp_ndt_8; [L1057] tmp_ndt_8 = __VERIFIER_nondet_int() [L1058] COND TRUE tmp_ndt_8 == 0 [L1064] return (0); [L265-L266] RET KeWaitForSingleObject(disketteExtension__FloppyThread, Executive, KernelMode, 0, 0) [L268] COND TRUE disketteExtension__FloppyThread != 0 [L271] disketteExtension__FloppyThread = 0 [L272] Irp__IoStatus__Status = 0 [L273] myStatus = 0 [L274] COND TRUE s == NP [L275] s = SKIP1 [L282] Irp__CurrentLocation ++ [L283] Irp__Tail__Overlay__CurrentStackLocation ++ [L284] CALL, EXPR IofCallDriver(disketteExtension__TargetObject, Irp) [L938] int returnVal2 ; [L939] int compRetStatus1 ; [L940] int lcontext = __VERIFIER_nondet_int() ; [L941] unsigned long __cil_tmp7 ; [L944] COND FALSE !(\read(compRegistered)) [L957] int tmp_ndt_12; [L958] tmp_ndt_12 = __VERIFIER_nondet_int() [L959] COND TRUE tmp_ndt_12 == 0 [L970] returnVal2 = 0 [L983] COND FALSE !(s == NP) [L987] COND FALSE !(s == MPR1) [L996] COND TRUE s == SKIP1 [L997] s = SKIP2 [L998] lowerDriverReturn = returnVal2 [L1006] return (returnVal2); [L284] RET, EXPR IofCallDriver(disketteExtension__TargetObject, Irp) [L284] ntStatus = IofCallDriver(disketteExtension__TargetObject, Irp) [L430] PagingReferenceCount -- [L431] COND TRUE PagingReferenceCount == 0 [L434] return (ntStatus); [L740] RET, EXPR FloppyPnp(devobj, pirp) [L740] status = FloppyPnp(devobj, pirp) [L750] COND TRUE pended == 1 [L751] COND FALSE !(s == NP) [L758] COND TRUE pended == 1 [L759] COND FALSE !(s == MPR3) [L766] COND TRUE s != UNLOADED [L767] COND TRUE status != -1 [L768] COND FALSE !(s != SKIP2) [L782] COND TRUE pended == 1 [L783] COND TRUE status != 259 [L784] CALL errorFn() [L65] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 27 procedures, 308 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 52.7s, OverallIterations: 39, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.1s, AutomataDifference: 39.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 19838 SdHoareTripleChecker+Valid, 29.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 19544 mSDsluCounter, 37117 SdHoareTripleChecker+Invalid, 24.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 23823 mSDsCounter, 6584 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 46153 IncrementalHoareTripleChecker+Invalid, 52737 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 6584 mSolverCounterUnsat, 13294 mSDtfsCounter, 46153 mSolverCounterSat, 0.4s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 862 GetRequests, 355 SyntacticMatches, 7 SemanticMatches, 500 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1033 ImplicationChecksByTransitivity, 7.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=845occurred in iteration=10, InterpolantAutomatonStates: 435, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 5.3s AutomataMinimizationTime, 38 MinimizatonAttempts, 2276 StatesRemovedByMinimization, 38 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! [2022-04-07 00:45:06,855 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...