/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-7968f31 [2022-03-18 05:22:56,458 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-18 05:22:56,459 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-18 05:22:56,489 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-03-18 05:22:56,506 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-03-18 05:22:56,508 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-03-18 05:22:56,508 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-03-18 05:22:56,509 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-03-18 05:22:56,510 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-03-18 05:22:56,510 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-03-18 05:22:56,514 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-03-18 05:22:56,517 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-03-18 05:22:56,518 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-03-18 05:22:56,519 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-03-18 05:22:56,520 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-03-18 05:22:56,520 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-03-18 05:22:56,521 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-03-18 05:22:56,524 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-03-18 05:22:56,529 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-18 05:22:56,529 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-18 05:22:56,534 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-18 05:22:56,534 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationQvasr_64.epf [2022-03-18 05:22:56,545 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-18 05:22:56,545 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-18 05:22:56,547 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-18 05:22:56,547 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-18 05:22:56,547 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-18 05:22:56,547 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-18 05:22:56,547 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-18 05:22:56,547 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-18 05:22:56,547 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-18 05:22:56,548 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-18 05:22:56,548 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-18 05:22:56,548 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-18 05:22:56,548 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-18 05:22:56,548 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-18 05:22:56,549 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-18 05:22:56,549 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-18 05:22:56,549 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-18 05:22:56,549 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2022-03-18 05:22:56,549 INFO L138 SettingsManager]: * Trace refinement strategy=ACCELERATED_INTERPOLATION [2022-03-18 05:22:56,549 INFO L138 SettingsManager]: * Trace refinement strategy used in Accelerated Interpolation=CAMEL [2022-03-18 05:22:56,549 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-18 05:22:56,549 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=QVASR [2022-03-18 05:22:56,549 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-03-18 05:22:56,740 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-18 05:22:56,760 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-18 05:22:56,762 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-18 05:22:56,762 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-18 05:22:56,763 INFO L275 PluginConnector]: CDTParser initialized [2022-03-18 05:22:56,764 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ntdrivers-simplified/floppy_simpl3.cil-1.c [2022-03-18 05:22:56,807 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ed7f5678a/ab33b98b99bb42bfa6b384393213b017/FLAG12b281e67 [2022-03-18 05:22:57,157 INFO L306 CDTParser]: Found 1 translation units. [2022-03-18 05:22:57,157 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ntdrivers-simplified/floppy_simpl3.cil-1.c [2022-03-18 05:22:57,173 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ed7f5678a/ab33b98b99bb42bfa6b384393213b017/FLAG12b281e67 [2022-03-18 05:22:57,529 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ed7f5678a/ab33b98b99bb42bfa6b384393213b017 [2022-03-18 05:22:57,531 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-18 05:22:57,532 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-03-18 05:22:57,533 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-18 05:22:57,533 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-18 05:22:57,536 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-18 05:22:57,536 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.03 05:22:57" (1/1) ... [2022-03-18 05:22:57,537 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@77d6bfb9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 05:22:57, skipping insertion in model container [2022-03-18 05:22:57,537 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.03 05:22:57" (1/1) ... [2022-03-18 05:22:57,541 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-18 05:22:57,581 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-18 05:22:57,735 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] [2022-03-18 05:22:57,787 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-18 05:22:57,791 INFO L203 MainTranslator]: Completed pre-run [2022-03-18 05:22:57,800 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] [2022-03-18 05:22:57,832 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-18 05:22:57,842 INFO L208 MainTranslator]: Completed translation [2022-03-18 05:22:57,842 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 05:22:57 WrapperNode [2022-03-18 05:22:57,842 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-18 05:22:57,843 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-18 05:22:57,843 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-18 05:22:57,843 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-18 05:22:57,850 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 05:22:57" (1/1) ... [2022-03-18 05:22:57,850 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 05:22:57" (1/1) ... [2022-03-18 05:22:57,859 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 05:22:57" (1/1) ... [2022-03-18 05:22:57,859 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 05:22:57" (1/1) ... [2022-03-18 05:22:57,871 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 05:22:57" (1/1) ... [2022-03-18 05:22:57,877 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 05:22:57" (1/1) ... [2022-03-18 05:22:57,879 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 05:22:57" (1/1) ... [2022-03-18 05:22:57,883 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-18 05:22:57,884 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-18 05:22:57,884 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-18 05:22:57,884 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-18 05:22:57,884 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 05:22:57" (1/1) ... [2022-03-18 05:22:57,904 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-18 05:22:57,920 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 05:22:57,934 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-03-18 05:22:57,950 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-03-18 05:22:57,977 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-03-18 05:22:57,977 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-18 05:22:57,977 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-03-18 05:22:57,977 INFO L138 BoogieDeclarations]: Found implementation of procedure errorFn [2022-03-18 05:22:57,977 INFO L138 BoogieDeclarations]: Found implementation of procedure _BLAST_init [2022-03-18 05:22:57,978 INFO L138 BoogieDeclarations]: Found implementation of procedure FlAcpiConfigureFloppy [2022-03-18 05:22:57,978 INFO L138 BoogieDeclarations]: Found implementation of procedure FlQueueIrpToThread [2022-03-18 05:22:57,978 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyPnp [2022-03-18 05:22:57,978 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyStartDevice [2022-03-18 05:22:57,978 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyPnpComplete [2022-03-18 05:22:57,978 INFO L138 BoogieDeclarations]: Found implementation of procedure FlFdcDeviceIo [2022-03-18 05:22:57,978 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyProcessQueuedRequests [2022-03-18 05:22:57,978 INFO L138 BoogieDeclarations]: Found implementation of procedure stub_driver_init [2022-03-18 05:22:57,979 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-03-18 05:22:57,979 INFO L138 BoogieDeclarations]: Found implementation of procedure IoBuildDeviceIoControlRequest [2022-03-18 05:22:57,980 INFO L138 BoogieDeclarations]: Found implementation of procedure IoDeleteSymbolicLink [2022-03-18 05:22:57,981 INFO L138 BoogieDeclarations]: Found implementation of procedure IoQueryDeviceDescription [2022-03-18 05:22:57,981 INFO L138 BoogieDeclarations]: Found implementation of procedure IoRegisterDeviceInterface [2022-03-18 05:22:57,981 INFO L138 BoogieDeclarations]: Found implementation of procedure IoSetDeviceInterfaceState [2022-03-18 05:22:57,981 INFO L138 BoogieDeclarations]: Found implementation of procedure stubMoreProcessingRequired [2022-03-18 05:22:57,981 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCallDriver [2022-03-18 05:22:57,981 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCompleteRequest [2022-03-18 05:22:57,981 INFO L138 BoogieDeclarations]: Found implementation of procedure KeSetEvent [2022-03-18 05:22:57,981 INFO L138 BoogieDeclarations]: Found implementation of procedure KeWaitForSingleObject [2022-03-18 05:22:57,981 INFO L138 BoogieDeclarations]: Found implementation of procedure ObReferenceObjectByHandle [2022-03-18 05:22:57,981 INFO L138 BoogieDeclarations]: Found implementation of procedure PsCreateSystemThread [2022-03-18 05:22:57,981 INFO L138 BoogieDeclarations]: Found implementation of procedure ZwClose [2022-03-18 05:22:57,981 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-03-18 05:22:57,981 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-03-18 05:22:57,981 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-03-18 05:22:57,982 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-18 05:22:57,982 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2022-03-18 05:22:57,982 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-03-18 05:22:57,982 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2022-03-18 05:22:57,982 INFO L130 BoogieDeclarations]: Found specification of procedure FlAcpiConfigureFloppy [2022-03-18 05:22:57,982 INFO L130 BoogieDeclarations]: Found specification of procedure FlQueueIrpToThread [2022-03-18 05:22:57,982 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyPnp [2022-03-18 05:22:57,982 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyStartDevice [2022-03-18 05:22:57,982 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyPnpComplete [2022-03-18 05:22:57,982 INFO L130 BoogieDeclarations]: Found specification of procedure FlFdcDeviceIo [2022-03-18 05:22:57,982 INFO L130 BoogieDeclarations]: Found specification of procedure IoBuildDeviceIoControlRequest [2022-03-18 05:22:57,982 INFO L130 BoogieDeclarations]: Found specification of procedure IoDeleteSymbolicLink [2022-03-18 05:22:57,982 INFO L130 BoogieDeclarations]: Found specification of procedure IoQueryDeviceDescription [2022-03-18 05:22:57,982 INFO L130 BoogieDeclarations]: Found specification of procedure IoRegisterDeviceInterface [2022-03-18 05:22:57,982 INFO L130 BoogieDeclarations]: Found specification of procedure IoSetDeviceInterfaceState [2022-03-18 05:22:57,982 INFO L130 BoogieDeclarations]: Found specification of procedure IofCallDriver [2022-03-18 05:22:57,983 INFO L130 BoogieDeclarations]: Found specification of procedure KeSetEvent [2022-03-18 05:22:57,983 INFO L130 BoogieDeclarations]: Found specification of procedure KeWaitForSingleObject [2022-03-18 05:22:57,983 INFO L130 BoogieDeclarations]: Found specification of procedure ObReferenceObjectByHandle [2022-03-18 05:22:57,983 INFO L130 BoogieDeclarations]: Found specification of procedure PsCreateSystemThread [2022-03-18 05:22:57,983 INFO L130 BoogieDeclarations]: Found specification of procedure ZwClose [2022-03-18 05:22:57,983 INFO L130 BoogieDeclarations]: Found specification of procedure IofCompleteRequest [2022-03-18 05:22:57,983 INFO L130 BoogieDeclarations]: Found specification of procedure errorFn [2022-03-18 05:22:57,983 INFO L130 BoogieDeclarations]: Found specification of procedure _BLAST_init [2022-03-18 05:22:57,983 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyProcessQueuedRequests [2022-03-18 05:22:57,983 INFO L130 BoogieDeclarations]: Found specification of procedure stub_driver_init [2022-03-18 05:22:57,983 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-03-18 05:22:57,983 INFO L130 BoogieDeclarations]: Found specification of procedure stubMoreProcessingRequired [2022-03-18 05:22:57,984 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-03-18 05:22:57,984 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-18 05:22:57,984 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-18 05:22:57,984 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-18 05:22:57,984 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-18 05:22:57,984 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-18 05:22:58,120 INFO L234 CfgBuilder]: Building ICFG [2022-03-18 05:22:58,121 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-18 05:22:58,150 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-18 05:22:58,169 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-18 05:22:58,169 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-18 05:22:58,174 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-18 05:22:58,180 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-18 05:22:58,180 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-18 05:22:58,183 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-18 05:22:58,333 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##21: assume !false; [2022-03-18 05:22:58,333 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##20: assume false; [2022-03-18 05:22:58,334 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-18 05:22:58,381 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##10: assume false; [2022-03-18 05:22:58,381 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume !false; [2022-03-18 05:22:58,388 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-18 05:22:58,411 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##16: assume !false; [2022-03-18 05:22:58,411 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume false; [2022-03-18 05:22:58,461 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-18 05:22:58,467 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-18 05:22:58,467 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-18 05:22:58,467 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-18 05:22:58,473 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-18 05:22:58,473 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-18 05:22:58,473 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-18 05:22:58,482 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-18 05:22:58,482 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-18 05:22:58,509 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-18 05:22:58,531 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##12: assume !false; [2022-03-18 05:22:58,531 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume false; [2022-03-18 05:22:58,552 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-18 05:22:58,556 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-18 05:22:58,556 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-18 05:22:58,556 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-18 05:22:58,569 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-18 05:22:58,569 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-18 05:22:58,569 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-18 05:22:58,572 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-18 05:22:58,572 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-18 05:22:58,596 INFO L275 CfgBuilder]: Performing block encoding [2022-03-18 05:22:58,604 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-18 05:22:58,604 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-03-18 05:22:58,606 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.03 05:22:58 BoogieIcfgContainer [2022-03-18 05:22:58,606 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-18 05:22:58,607 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-18 05:22:58,607 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-18 05:22:58,610 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-18 05:22:58,611 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.03 05:22:57" (1/3) ... [2022-03-18 05:22:58,611 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13aadbc2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.03 05:22:58, skipping insertion in model container [2022-03-18 05:22:58,611 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 05:22:57" (2/3) ... [2022-03-18 05:22:58,612 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13aadbc2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.03 05:22:58, skipping insertion in model container [2022-03-18 05:22:58,612 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.03 05:22:58" (3/3) ... [2022-03-18 05:22:58,613 INFO L111 eAbstractionObserver]: Analyzing ICFG floppy_simpl3.cil-1.c [2022-03-18 05:22:58,616 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-03-18 05:22:58,616 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-18 05:22:58,649 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-18 05:22:58,655 INFO L340 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=Craig_NestedInterpolation, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP [2022-03-18 05:22:58,655 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-03-18 05:22:58,672 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) [2022-03-18 05:22:58,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-18 05:22:58,678 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:22:58,678 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 05:22:58,679 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:22:58,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:22:58,682 INFO L85 PathProgramCache]: Analyzing trace with hash -1062088937, now seen corresponding path program 1 times [2022-03-18 05:22:58,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:22:58,687 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [867185985] [2022-03-18 05:22:58,694 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 05:22:58,694 INFO L85 PathProgramCache]: Analyzing trace with hash -1062088937, now seen corresponding path program 2 times [2022-03-18 05:22:58,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:22:58,696 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538306510] [2022-03-18 05:22:58,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:22:58,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:22:58,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:58,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:22:58,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:59,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 05:22:59,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:59,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:22:59,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:22:59,041 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538306510] [2022-03-18 05:22:59,042 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1538306510] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:22:59,042 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:22:59,042 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-18 05:22:59,044 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:22:59,044 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [867185985] [2022-03-18 05:22:59,044 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [867185985] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:22:59,044 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:22:59,044 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-18 05:22:59,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250015338] [2022-03-18 05:22:59,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:22:59,047 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-18 05:22:59,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:22:59,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-18 05:22:59,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-03-18 05:22:59,074 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) [2022-03-18 05:23:00,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:23:00,072 INFO L93 Difference]: Finished difference Result 539 states and 782 transitions. [2022-03-18 05:23:00,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-18 05:23:00,074 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 3 states have internal predecessors, (14), 3 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 20 [2022-03-18 05:23:00,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:23:00,083 INFO L225 Difference]: With dead ends: 539 [2022-03-18 05:23:00,083 INFO L226 Difference]: Without dead ends: 324 [2022-03-18 05:23:00,087 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-03-18 05:23:00,089 INFO L912 BasicCegarLoop]: 366 mSDtfsCounter, 154 mSDsluCounter, 209 mSDsCounter, 0 mSdLazyCounter, 772 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s 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, 0.9s IncrementalHoareTripleChecker+Time [2022-03-18 05:23:00,089 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [159 Valid, 575 Invalid, 839 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 772 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-03-18 05:23:00,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2022-03-18 05:23:00,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 294. [2022-03-18 05:23:00,139 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) [2022-03-18 05:23:00,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 388 transitions. [2022-03-18 05:23:00,142 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 388 transitions. Word has length 20 [2022-03-18 05:23:00,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:23:00,142 INFO L478 AbstractCegarLoop]: Abstraction has 294 states and 388 transitions. [2022-03-18 05:23:00,142 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 3 states have internal predecessors, (14), 3 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-03-18 05:23:00,142 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 388 transitions. [2022-03-18 05:23:00,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-03-18 05:23:00,143 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:23:00,143 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 05:23:00,144 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-18 05:23:00,144 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:23:00,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:23:00,144 INFO L85 PathProgramCache]: Analyzing trace with hash 1342963223, now seen corresponding path program 1 times [2022-03-18 05:23:00,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:23:00,144 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1653838283] [2022-03-18 05:23:00,145 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 05:23:00,145 INFO L85 PathProgramCache]: Analyzing trace with hash 1342963223, now seen corresponding path program 2 times [2022-03-18 05:23:00,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:23:00,145 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177011771] [2022-03-18 05:23:00,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:23:00,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:23:00,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:00,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:23:00,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:00,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 05:23:00,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:00,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 05:23:00,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:00,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:23:00,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:23:00,329 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177011771] [2022-03-18 05:23:00,329 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [177011771] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:23:00,329 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:23:00,329 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-18 05:23:00,330 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:23:00,330 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1653838283] [2022-03-18 05:23:00,330 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1653838283] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:23:00,330 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:23:00,331 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-18 05:23:00,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712878349] [2022-03-18 05:23:00,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:23:00,331 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-18 05:23:00,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:23:00,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-18 05:23:00,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-03-18 05:23:00,332 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) [2022-03-18 05:23:01,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:23:01,346 INFO L93 Difference]: Finished difference Result 643 states and 865 transitions. [2022-03-18 05:23:01,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-18 05:23:01,347 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 3 states have internal predecessors, (18), 3 states have call successors, (7), 6 states have call predecessors, (7), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 28 [2022-03-18 05:23:01,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:23:01,350 INFO L225 Difference]: With dead ends: 643 [2022-03-18 05:23:01,350 INFO L226 Difference]: Without dead ends: 480 [2022-03-18 05:23:01,351 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-03-18 05:23:01,352 INFO L912 BasicCegarLoop]: 510 mSDtfsCounter, 552 mSDsluCounter, 243 mSDsCounter, 0 mSdLazyCounter, 862 mSolverCounterSat, 158 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s 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, 0.9s IncrementalHoareTripleChecker+Time [2022-03-18 05:23:01,352 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [558 Valid, 753 Invalid, 1020 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [158 Valid, 862 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-03-18 05:23:01,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 480 states. [2022-03-18 05:23:01,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 480 to 431. [2022-03-18 05:23:01,389 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) [2022-03-18 05:23:01,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 431 states to 431 states and 573 transitions. [2022-03-18 05:23:01,392 INFO L78 Accepts]: Start accepts. Automaton has 431 states and 573 transitions. Word has length 28 [2022-03-18 05:23:01,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:23:01,392 INFO L478 AbstractCegarLoop]: Abstraction has 431 states and 573 transitions. [2022-03-18 05:23:01,392 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 3 states have internal predecessors, (18), 3 states have call successors, (7), 6 states have call predecessors, (7), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-03-18 05:23:01,392 INFO L276 IsEmpty]: Start isEmpty. Operand 431 states and 573 transitions. [2022-03-18 05:23:01,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-03-18 05:23:01,393 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:23:01,393 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 05:23:01,393 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-03-18 05:23:01,393 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:23:01,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:23:01,394 INFO L85 PathProgramCache]: Analyzing trace with hash 2077310213, now seen corresponding path program 1 times [2022-03-18 05:23:01,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:23:01,394 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1636678600] [2022-03-18 05:23:01,394 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 05:23:01,394 INFO L85 PathProgramCache]: Analyzing trace with hash 2077310213, now seen corresponding path program 2 times [2022-03-18 05:23:01,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:23:01,394 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264424843] [2022-03-18 05:23:01,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:23:01,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:23:01,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:01,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:23:01,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:01,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 05:23:01,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:01,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 05:23:01,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:01,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:23:01,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:23:01,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264424843] [2022-03-18 05:23:01,521 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1264424843] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:23:01,521 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:23:01,521 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-18 05:23:01,521 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:23:01,521 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1636678600] [2022-03-18 05:23:01,521 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1636678600] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:23:01,521 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:23:01,521 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-18 05:23:01,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095669098] [2022-03-18 05:23:01,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:23:01,522 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-18 05:23:01,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:23:01,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-18 05:23:01,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-03-18 05:23:01,522 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) [2022-03-18 05:23:02,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:23:02,440 INFO L93 Difference]: Finished difference Result 949 states and 1266 transitions. [2022-03-18 05:23:02,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-18 05:23:02,441 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 [2022-03-18 05:23:02,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:23:02,444 INFO L225 Difference]: With dead ends: 949 [2022-03-18 05:23:02,444 INFO L226 Difference]: Without dead ends: 679 [2022-03-18 05:23:02,445 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-03-18 05:23:02,446 INFO L912 BasicCegarLoop]: 352 mSDtfsCounter, 475 mSDsluCounter, 216 mSDsCounter, 0 mSdLazyCounter, 820 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s 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, 0.8s IncrementalHoareTripleChecker+Time [2022-03-18 05:23:02,446 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [482 Valid, 568 Invalid, 935 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 820 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-18 05:23:02,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 679 states. [2022-03-18 05:23:02,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 679 to 634. [2022-03-18 05:23:02,535 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) [2022-03-18 05:23:02,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 634 states to 634 states and 848 transitions. [2022-03-18 05:23:02,538 INFO L78 Accepts]: Start accepts. Automaton has 634 states and 848 transitions. Word has length 30 [2022-03-18 05:23:02,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:23:02,538 INFO L478 AbstractCegarLoop]: Abstraction has 634 states and 848 transitions. [2022-03-18 05:23:02,538 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) [2022-03-18 05:23:02,539 INFO L276 IsEmpty]: Start isEmpty. Operand 634 states and 848 transitions. [2022-03-18 05:23:02,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-03-18 05:23:02,539 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:23:02,539 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 05:23:02,540 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-03-18 05:23:02,540 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:23:02,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:23:02,540 INFO L85 PathProgramCache]: Analyzing trace with hash 219422801, now seen corresponding path program 1 times [2022-03-18 05:23:02,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:23:02,540 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [354890089] [2022-03-18 05:23:02,541 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 05:23:02,541 INFO L85 PathProgramCache]: Analyzing trace with hash 219422801, now seen corresponding path program 2 times [2022-03-18 05:23:02,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:23:02,541 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791936547] [2022-03-18 05:23:02,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:23:02,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:23:02,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:02,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:23:02,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:02,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 05:23:02,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:02,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 05:23:02,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:02,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:23:02,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:23:02,690 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791936547] [2022-03-18 05:23:02,690 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [791936547] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:23:02,690 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:23:02,690 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-18 05:23:02,691 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:23:02,691 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [354890089] [2022-03-18 05:23:02,691 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [354890089] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:23:02,691 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:23:02,691 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-18 05:23:02,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478063349] [2022-03-18 05:23:02,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:23:02,692 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-18 05:23:02,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:23:02,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-18 05:23:02,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-03-18 05:23:02,693 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) [2022-03-18 05:23:03,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:23:03,500 INFO L93 Difference]: Finished difference Result 743 states and 986 transitions. [2022-03-18 05:23:03,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-18 05:23:03,501 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 [2022-03-18 05:23:03,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:23:03,504 INFO L225 Difference]: With dead ends: 743 [2022-03-18 05:23:03,504 INFO L226 Difference]: Without dead ends: 723 [2022-03-18 05:23:03,505 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-03-18 05:23:03,505 INFO L912 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, 0.7s IncrementalHoareTripleChecker+Time [2022-03-18 05:23:03,505 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [481 Valid, 451 Invalid, 852 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 749 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-18 05:23:03,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 723 states. [2022-03-18 05:23:03,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 723 to 678. [2022-03-18 05:23:03,587 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) [2022-03-18 05:23:03,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 678 states to 678 states and 906 transitions. [2022-03-18 05:23:03,590 INFO L78 Accepts]: Start accepts. Automaton has 678 states and 906 transitions. Word has length 34 [2022-03-18 05:23:03,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:23:03,590 INFO L478 AbstractCegarLoop]: Abstraction has 678 states and 906 transitions. [2022-03-18 05:23:03,590 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) [2022-03-18 05:23:03,590 INFO L276 IsEmpty]: Start isEmpty. Operand 678 states and 906 transitions. [2022-03-18 05:23:03,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-03-18 05:23:03,592 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:23:03,592 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 05:23:03,592 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-03-18 05:23:03,592 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:23:03,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:23:03,592 INFO L85 PathProgramCache]: Analyzing trace with hash -465049067, now seen corresponding path program 1 times [2022-03-18 05:23:03,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:23:03,592 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1954065779] [2022-03-18 05:23:03,607 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 05:23:03,607 INFO L85 PathProgramCache]: Analyzing trace with hash -465049067, now seen corresponding path program 2 times [2022-03-18 05:23:03,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:23:03,608 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225229886] [2022-03-18 05:23:03,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:23:03,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:23:03,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:03,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:23:03,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:03,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 05:23:03,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:03,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 05:23:03,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:03,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-03-18 05:23:03,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:03,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:23:03,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:23:03,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1225229886] [2022-03-18 05:23:03,767 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1225229886] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:23:03,767 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:23:03,767 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-03-18 05:23:03,767 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:23:03,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1954065779] [2022-03-18 05:23:03,767 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1954065779] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:23:03,767 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:23:03,767 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-03-18 05:23:03,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157489998] [2022-03-18 05:23:03,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:23:03,768 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-18 05:23:03,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:23:03,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-18 05:23:03,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-03-18 05:23:03,768 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) [2022-03-18 05:23:04,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:23:04,688 INFO L93 Difference]: Finished difference Result 771 states and 1021 transitions. [2022-03-18 05:23:04,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-18 05:23:04,688 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 [2022-03-18 05:23:04,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:23:04,691 INFO L225 Difference]: With dead ends: 771 [2022-03-18 05:23:04,691 INFO L226 Difference]: Without dead ends: 704 [2022-03-18 05:23:04,692 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2022-03-18 05:23:04,692 INFO L912 BasicCegarLoop]: 324 mSDtfsCounter, 384 mSDsluCounter, 427 mSDsCounter, 0 mSdLazyCounter, 1394 mSolverCounterSat, 161 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s 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, 0.8s IncrementalHoareTripleChecker+Time [2022-03-18 05:23:04,693 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [398 Valid, 751 Invalid, 1555 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [161 Valid, 1394 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-18 05:23:04,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 704 states. [2022-03-18 05:23:04,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 704 to 682. [2022-03-18 05:23:04,766 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) [2022-03-18 05:23:04,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 682 states to 682 states and 910 transitions. [2022-03-18 05:23:04,769 INFO L78 Accepts]: Start accepts. Automaton has 682 states and 910 transitions. Word has length 41 [2022-03-18 05:23:04,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:23:04,769 INFO L478 AbstractCegarLoop]: Abstraction has 682 states and 910 transitions. [2022-03-18 05:23:04,769 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) [2022-03-18 05:23:04,769 INFO L276 IsEmpty]: Start isEmpty. Operand 682 states and 910 transitions. [2022-03-18 05:23:04,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-03-18 05:23:04,770 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:23:04,770 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 05:23:04,770 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-03-18 05:23:04,770 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:23:04,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:23:04,771 INFO L85 PathProgramCache]: Analyzing trace with hash -1071240601, now seen corresponding path program 1 times [2022-03-18 05:23:04,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:23:04,771 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [2001084617] [2022-03-18 05:23:04,771 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 05:23:04,771 INFO L85 PathProgramCache]: Analyzing trace with hash -1071240601, now seen corresponding path program 2 times [2022-03-18 05:23:04,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:23:04,771 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197287269] [2022-03-18 05:23:04,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:23:04,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:23:04,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:04,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:23:04,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:04,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 05:23:04,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:04,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 05:23:04,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:04,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:23:04,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:23:04,889 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197287269] [2022-03-18 05:23:04,889 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [197287269] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:23:04,889 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:23:04,889 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-18 05:23:04,890 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:23:04,890 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [2001084617] [2022-03-18 05:23:04,890 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [2001084617] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:23:04,890 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:23:04,890 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-18 05:23:04,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018606512] [2022-03-18 05:23:04,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:23:04,890 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-18 05:23:04,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:23:04,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-18 05:23:04,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-03-18 05:23:04,891 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) [2022-03-18 05:23:05,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:23:05,695 INFO L93 Difference]: Finished difference Result 709 states and 944 transitions. [2022-03-18 05:23:05,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-18 05:23:05,695 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 [2022-03-18 05:23:05,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:23:05,698 INFO L225 Difference]: With dead ends: 709 [2022-03-18 05:23:05,698 INFO L226 Difference]: Without dead ends: 706 [2022-03-18 05:23:05,698 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-03-18 05:23:05,699 INFO L912 BasicCegarLoop]: 345 mSDtfsCounter, 167 mSDsluCounter, 234 mSDsCounter, 0 mSdLazyCounter, 868 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s 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, 0.7s IncrementalHoareTripleChecker+Time [2022-03-18 05:23:05,699 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [170 Valid, 579 Invalid, 926 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 868 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-18 05:23:05,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 706 states. [2022-03-18 05:23:05,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 706 to 693. [2022-03-18 05:23:05,757 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) [2022-03-18 05:23:05,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 693 states to 693 states and 924 transitions. [2022-03-18 05:23:05,760 INFO L78 Accepts]: Start accepts. Automaton has 693 states and 924 transitions. Word has length 40 [2022-03-18 05:23:05,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:23:05,760 INFO L478 AbstractCegarLoop]: Abstraction has 693 states and 924 transitions. [2022-03-18 05:23:05,760 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) [2022-03-18 05:23:05,760 INFO L276 IsEmpty]: Start isEmpty. Operand 693 states and 924 transitions. [2022-03-18 05:23:05,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-03-18 05:23:05,761 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:23:05,761 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 05:23:05,761 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-03-18 05:23:05,761 INFO L403 AbstractCegarLoop]: === Iteration 7 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:23:05,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:23:05,762 INFO L85 PathProgramCache]: Analyzing trace with hash -852493695, now seen corresponding path program 1 times [2022-03-18 05:23:05,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:23:05,762 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [2038404055] [2022-03-18 05:23:05,762 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 05:23:05,762 INFO L85 PathProgramCache]: Analyzing trace with hash -852493695, now seen corresponding path program 2 times [2022-03-18 05:23:05,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:23:05,762 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829854568] [2022-03-18 05:23:05,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:23:05,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:23:05,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:05,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:23:05,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:05,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 05:23:05,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:05,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 05:23:05,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:05,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-18 05:23:05,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:05,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-18 05:23:05,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:05,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:23:05,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:23:05,894 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829854568] [2022-03-18 05:23:05,894 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [829854568] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:23:05,894 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:23:05,895 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-18 05:23:05,895 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:23:05,895 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [2038404055] [2022-03-18 05:23:05,895 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [2038404055] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:23:05,895 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:23:05,895 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-18 05:23:05,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004728505] [2022-03-18 05:23:05,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:23:05,895 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-18 05:23:05,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:23:05,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-18 05:23:05,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-03-18 05:23:05,897 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) [2022-03-18 05:23:06,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:23:06,557 INFO L93 Difference]: Finished difference Result 768 states and 1018 transitions. [2022-03-18 05:23:06,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-18 05:23:06,557 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 [2022-03-18 05:23:06,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:23:06,560 INFO L225 Difference]: With dead ends: 768 [2022-03-18 05:23:06,560 INFO L226 Difference]: Without dead ends: 763 [2022-03-18 05:23:06,561 INFO L911 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 [2022-03-18 05:23:06,561 INFO L912 BasicCegarLoop]: 333 mSDtfsCounter, 425 mSDsluCounter, 340 mSDsCounter, 0 mSdLazyCounter, 612 mSolverCounterSat, 167 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s 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 [2022-03-18 05:23:06,561 INFO L913 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] [2022-03-18 05:23:06,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 763 states. [2022-03-18 05:23:06,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 763 to 732. [2022-03-18 05:23:06,604 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) [2022-03-18 05:23:06,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 732 states to 732 states and 972 transitions. [2022-03-18 05:23:06,606 INFO L78 Accepts]: Start accepts. Automaton has 732 states and 972 transitions. Word has length 41 [2022-03-18 05:23:06,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:23:06,607 INFO L478 AbstractCegarLoop]: Abstraction has 732 states and 972 transitions. [2022-03-18 05:23:06,607 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) [2022-03-18 05:23:06,607 INFO L276 IsEmpty]: Start isEmpty. Operand 732 states and 972 transitions. [2022-03-18 05:23:06,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-03-18 05:23:06,608 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:23:06,608 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 05:23:06,608 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-03-18 05:23:06,608 INFO L403 AbstractCegarLoop]: === Iteration 8 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:23:06,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:23:06,608 INFO L85 PathProgramCache]: Analyzing trace with hash -204665957, now seen corresponding path program 1 times [2022-03-18 05:23:06,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:23:06,608 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [3557453] [2022-03-18 05:23:06,609 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 05:23:06,609 INFO L85 PathProgramCache]: Analyzing trace with hash -204665957, now seen corresponding path program 2 times [2022-03-18 05:23:06,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:23:06,609 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495469793] [2022-03-18 05:23:06,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:23:06,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:23:06,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:06,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:23:06,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:06,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 05:23:06,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:06,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 05:23:06,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:06,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-18 05:23:06,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:06,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-18 05:23:06,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:06,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:23:06,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:23:06,810 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495469793] [2022-03-18 05:23:06,810 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [495469793] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:23:06,810 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:23:06,810 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-18 05:23:06,811 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:23:06,811 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [3557453] [2022-03-18 05:23:06,811 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [3557453] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:23:06,811 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:23:06,811 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-18 05:23:06,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129648213] [2022-03-18 05:23:06,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:23:06,812 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-18 05:23:06,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:23:06,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-18 05:23:06,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2022-03-18 05:23:06,812 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) [2022-03-18 05:23:07,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:23:07,927 INFO L93 Difference]: Finished difference Result 772 states and 1020 transitions. [2022-03-18 05:23:07,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-18 05:23:07,928 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 [2022-03-18 05:23:07,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:23:07,930 INFO L225 Difference]: With dead ends: 772 [2022-03-18 05:23:07,930 INFO L226 Difference]: Without dead ends: 763 [2022-03-18 05:23:07,931 INFO L911 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 [2022-03-18 05:23:07,931 INFO L912 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 [2022-03-18 05:23:07,931 INFO L913 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] [2022-03-18 05:23:07,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 763 states. [2022-03-18 05:23:08,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 763 to 732. [2022-03-18 05:23:08,002 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) [2022-03-18 05:23:08,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 732 states to 732 states and 970 transitions. [2022-03-18 05:23:08,005 INFO L78 Accepts]: Start accepts. Automaton has 732 states and 970 transitions. Word has length 42 [2022-03-18 05:23:08,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:23:08,005 INFO L478 AbstractCegarLoop]: Abstraction has 732 states and 970 transitions. [2022-03-18 05:23:08,005 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) [2022-03-18 05:23:08,005 INFO L276 IsEmpty]: Start isEmpty. Operand 732 states and 970 transitions. [2022-03-18 05:23:08,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-03-18 05:23:08,006 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:23:08,006 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 05:23:08,006 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-03-18 05:23:08,006 INFO L403 AbstractCegarLoop]: === Iteration 9 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:23:08,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:23:08,007 INFO L85 PathProgramCache]: Analyzing trace with hash 1356271149, now seen corresponding path program 1 times [2022-03-18 05:23:08,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:23:08,007 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [429741622] [2022-03-18 05:23:08,007 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 05:23:08,007 INFO L85 PathProgramCache]: Analyzing trace with hash 1356271149, now seen corresponding path program 2 times [2022-03-18 05:23:08,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:23:08,007 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983680550] [2022-03-18 05:23:08,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:23:08,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:23:08,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:08,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:23:08,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:08,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 05:23:08,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:08,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 05:23:08,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:08,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-18 05:23:08,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:08,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-18 05:23:08,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:08,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:23:08,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:23:08,238 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983680550] [2022-03-18 05:23:08,239 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1983680550] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:23:08,239 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:23:08,239 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-18 05:23:08,239 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:23:08,239 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [429741622] [2022-03-18 05:23:08,239 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [429741622] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:23:08,239 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:23:08,239 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-18 05:23:08,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742839055] [2022-03-18 05:23:08,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:23:08,239 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-18 05:23:08,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:23:08,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-18 05:23:08,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2022-03-18 05:23:08,240 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) [2022-03-18 05:23:09,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:23:09,244 INFO L93 Difference]: Finished difference Result 772 states and 1018 transitions. [2022-03-18 05:23:09,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-18 05:23:09,244 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 [2022-03-18 05:23:09,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:23:09,247 INFO L225 Difference]: With dead ends: 772 [2022-03-18 05:23:09,247 INFO L226 Difference]: Without dead ends: 763 [2022-03-18 05:23:09,248 INFO L911 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 [2022-03-18 05:23:09,250 INFO L912 BasicCegarLoop]: 317 mSDtfsCounter, 884 mSDsluCounter, 416 mSDsCounter, 0 mSdLazyCounter, 884 mSolverCounterSat, 292 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s 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, 0.7s IncrementalHoareTripleChecker+Time [2022-03-18 05:23:09,250 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [894 Valid, 733 Invalid, 1176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [292 Valid, 884 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-18 05:23:09,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 763 states. [2022-03-18 05:23:09,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 763 to 732. [2022-03-18 05:23:09,314 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) [2022-03-18 05:23:09,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 732 states to 732 states and 968 transitions. [2022-03-18 05:23:09,317 INFO L78 Accepts]: Start accepts. Automaton has 732 states and 968 transitions. Word has length 43 [2022-03-18 05:23:09,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:23:09,317 INFO L478 AbstractCegarLoop]: Abstraction has 732 states and 968 transitions. [2022-03-18 05:23:09,317 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) [2022-03-18 05:23:09,317 INFO L276 IsEmpty]: Start isEmpty. Operand 732 states and 968 transitions. [2022-03-18 05:23:09,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-03-18 05:23:09,318 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:23:09,318 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 05:23:09,318 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-03-18 05:23:09,318 INFO L403 AbstractCegarLoop]: === Iteration 10 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:23:09,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:23:09,318 INFO L85 PathProgramCache]: Analyzing trace with hash -80599750, now seen corresponding path program 1 times [2022-03-18 05:23:09,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:23:09,318 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1788952273] [2022-03-18 05:23:09,321 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 05:23:09,321 INFO L85 PathProgramCache]: Analyzing trace with hash -80599750, now seen corresponding path program 2 times [2022-03-18 05:23:09,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:23:09,321 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085224749] [2022-03-18 05:23:09,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:23:09,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:23:09,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:09,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:23:09,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:09,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 05:23:09,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:09,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 05:23:09,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:09,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-03-18 05:23:09,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:09,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:23:09,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:23:09,445 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085224749] [2022-03-18 05:23:09,445 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1085224749] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:23:09,445 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:23:09,446 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-03-18 05:23:09,446 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:23:09,446 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1788952273] [2022-03-18 05:23:09,446 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1788952273] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:23:09,446 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:23:09,446 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-03-18 05:23:09,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074253354] [2022-03-18 05:23:09,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:23:09,446 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-18 05:23:09,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:23:09,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-18 05:23:09,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-03-18 05:23:09,447 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) [2022-03-18 05:23:10,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:23:10,368 INFO L93 Difference]: Finished difference Result 1109 states and 1486 transitions. [2022-03-18 05:23:10,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-18 05:23:10,369 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 [2022-03-18 05:23:10,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:23:10,372 INFO L225 Difference]: With dead ends: 1109 [2022-03-18 05:23:10,373 INFO L226 Difference]: Without dead ends: 1106 [2022-03-18 05:23:10,373 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-03-18 05:23:10,373 INFO L912 BasicCegarLoop]: 440 mSDtfsCounter, 520 mSDsluCounter, 223 mSDsCounter, 0 mSdLazyCounter, 1078 mSolverCounterSat, 198 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s 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, 0.7s IncrementalHoareTripleChecker+Time [2022-03-18 05:23:10,374 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [533 Valid, 663 Invalid, 1276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [198 Valid, 1078 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-18 05:23:10,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1106 states. [2022-03-18 05:23:10,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1106 to 845. [2022-03-18 05:23:10,455 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) [2022-03-18 05:23:10,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 845 states to 845 states and 1122 transitions. [2022-03-18 05:23:10,458 INFO L78 Accepts]: Start accepts. Automaton has 845 states and 1122 transitions. Word has length 44 [2022-03-18 05:23:10,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:23:10,458 INFO L478 AbstractCegarLoop]: Abstraction has 845 states and 1122 transitions. [2022-03-18 05:23:10,458 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) [2022-03-18 05:23:10,458 INFO L276 IsEmpty]: Start isEmpty. Operand 845 states and 1122 transitions. [2022-03-18 05:23:10,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-03-18 05:23:10,459 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:23:10,459 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 05:23:10,459 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-03-18 05:23:10,459 INFO L403 AbstractCegarLoop]: === Iteration 11 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:23:10,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:23:10,459 INFO L85 PathProgramCache]: Analyzing trace with hash -850118780, now seen corresponding path program 1 times [2022-03-18 05:23:10,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:23:10,460 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1272918646] [2022-03-18 05:23:10,460 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 05:23:10,460 INFO L85 PathProgramCache]: Analyzing trace with hash -850118780, now seen corresponding path program 2 times [2022-03-18 05:23:10,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:23:10,460 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262890796] [2022-03-18 05:23:10,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:23:10,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:23:10,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:10,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:23:10,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:10,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 05:23:10,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:10,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 05:23:10,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:10,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-18 05:23:10,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:10,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-18 05:23:10,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:10,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:23:10,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:23:10,581 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262890796] [2022-03-18 05:23:10,581 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1262890796] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:23:10,581 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:23:10,581 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-03-18 05:23:10,581 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:23:10,582 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1272918646] [2022-03-18 05:23:10,582 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1272918646] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:23:10,582 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:23:10,582 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-03-18 05:23:10,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447480199] [2022-03-18 05:23:10,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:23:10,582 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-18 05:23:10,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:23:10,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-18 05:23:10,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-03-18 05:23:10,583 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) [2022-03-18 05:23:11,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:23:11,378 INFO L93 Difference]: Finished difference Result 888 states and 1173 transitions. [2022-03-18 05:23:11,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-18 05:23:11,379 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 [2022-03-18 05:23:11,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:23:11,382 INFO L225 Difference]: With dead ends: 888 [2022-03-18 05:23:11,382 INFO L226 Difference]: Without dead ends: 870 [2022-03-18 05:23:11,383 INFO L911 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 [2022-03-18 05:23:11,383 INFO L912 BasicCegarLoop]: 343 mSDtfsCounter, 340 mSDsluCounter, 747 mSDsCounter, 0 mSdLazyCounter, 1208 mSolverCounterSat, 151 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 343 SdHoareTripleChecker+Valid, 1090 SdHoareTripleChecker+Invalid, 1359 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 151 IncrementalHoareTripleChecker+Valid, 1208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-18 05:23:11,383 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [343 Valid, 1090 Invalid, 1359 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [151 Valid, 1208 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-18 05:23:11,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 870 states. [2022-03-18 05:23:11,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 870 to 843. [2022-03-18 05:23:11,473 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) [2022-03-18 05:23:11,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 843 states to 843 states and 1118 transitions. [2022-03-18 05:23:11,475 INFO L78 Accepts]: Start accepts. Automaton has 843 states and 1118 transitions. Word has length 44 [2022-03-18 05:23:11,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:23:11,475 INFO L478 AbstractCegarLoop]: Abstraction has 843 states and 1118 transitions. [2022-03-18 05:23:11,476 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) [2022-03-18 05:23:11,476 INFO L276 IsEmpty]: Start isEmpty. Operand 843 states and 1118 transitions. [2022-03-18 05:23:11,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-03-18 05:23:11,476 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:23:11,476 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 05:23:11,476 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-03-18 05:23:11,476 INFO L403 AbstractCegarLoop]: === Iteration 12 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:23:11,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:23:11,477 INFO L85 PathProgramCache]: Analyzing trace with hash 1558546133, now seen corresponding path program 1 times [2022-03-18 05:23:11,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:23:11,477 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [498753567] [2022-03-18 05:23:11,477 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 05:23:11,477 INFO L85 PathProgramCache]: Analyzing trace with hash 1558546133, now seen corresponding path program 2 times [2022-03-18 05:23:11,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:23:11,477 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731400639] [2022-03-18 05:23:11,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:23:11,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:23:11,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:11,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:23:11,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:11,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 05:23:11,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:11,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 05:23:11,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:11,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-03-18 05:23:11,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:11,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:23:11,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:23:11,647 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731400639] [2022-03-18 05:23:11,647 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [731400639] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:23:11,647 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:23:11,647 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-03-18 05:23:11,647 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:23:11,647 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [498753567] [2022-03-18 05:23:11,647 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [498753567] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:23:11,647 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:23:11,647 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-03-18 05:23:11,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346327894] [2022-03-18 05:23:11,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:23:11,648 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-18 05:23:11,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:23:11,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-18 05:23:11,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-03-18 05:23:11,649 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) [2022-03-18 05:23:13,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:23:13,370 INFO L93 Difference]: Finished difference Result 1459 states and 1911 transitions. [2022-03-18 05:23:13,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-18 05:23:13,370 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 [2022-03-18 05:23:13,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:23:13,373 INFO L225 Difference]: With dead ends: 1459 [2022-03-18 05:23:13,373 INFO L226 Difference]: Without dead ends: 897 [2022-03-18 05:23:13,375 INFO L911 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 [2022-03-18 05:23:13,375 INFO L912 BasicCegarLoop]: 456 mSDtfsCounter, 1120 mSDsluCounter, 259 mSDsCounter, 0 mSdLazyCounter, 1652 mSolverCounterSat, 419 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s 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, 1.3s IncrementalHoareTripleChecker+Time [2022-03-18 05:23:13,375 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [1132 Valid, 715 Invalid, 2071 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [419 Valid, 1652 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-03-18 05:23:13,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 897 states. [2022-03-18 05:23:13,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 897 to 834. [2022-03-18 05:23:13,485 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) [2022-03-18 05:23:13,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 834 states to 834 states and 1097 transitions. [2022-03-18 05:23:13,487 INFO L78 Accepts]: Start accepts. Automaton has 834 states and 1097 transitions. Word has length 45 [2022-03-18 05:23:13,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:23:13,488 INFO L478 AbstractCegarLoop]: Abstraction has 834 states and 1097 transitions. [2022-03-18 05:23:13,489 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) [2022-03-18 05:23:13,489 INFO L276 IsEmpty]: Start isEmpty. Operand 834 states and 1097 transitions. [2022-03-18 05:23:13,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-03-18 05:23:13,489 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:23:13,489 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 05:23:13,490 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-03-18 05:23:13,490 INFO L403 AbstractCegarLoop]: === Iteration 13 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:23:13,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:23:13,490 INFO L85 PathProgramCache]: Analyzing trace with hash -1805363402, now seen corresponding path program 1 times [2022-03-18 05:23:13,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:23:13,490 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [919096812] [2022-03-18 05:23:13,490 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 05:23:13,490 INFO L85 PathProgramCache]: Analyzing trace with hash -1805363402, now seen corresponding path program 2 times [2022-03-18 05:23:13,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:23:13,491 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539033160] [2022-03-18 05:23:13,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:23:13,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:23:13,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:13,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:23:13,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:13,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 05:23:13,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:13,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 05:23:13,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:13,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-03-18 05:23:13,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:13,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:23:13,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:23:13,634 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539033160] [2022-03-18 05:23:13,634 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [539033160] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:23:13,634 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:23:13,634 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-18 05:23:13,635 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:23:13,635 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [919096812] [2022-03-18 05:23:13,635 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [919096812] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:23:13,635 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:23:13,635 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-18 05:23:13,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086316191] [2022-03-18 05:23:13,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:23:13,635 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-18 05:23:13,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:23:13,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-18 05:23:13,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-03-18 05:23:13,636 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) [2022-03-18 05:23:14,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:23:14,390 INFO L93 Difference]: Finished difference Result 933 states and 1198 transitions. [2022-03-18 05:23:14,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-18 05:23:14,391 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 [2022-03-18 05:23:14,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:23:14,393 INFO L225 Difference]: With dead ends: 933 [2022-03-18 05:23:14,393 INFO L226 Difference]: Without dead ends: 594 [2022-03-18 05:23:14,393 INFO L911 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 [2022-03-18 05:23:14,394 INFO L912 BasicCegarLoop]: 383 mSDtfsCounter, 688 mSDsluCounter, 372 mSDsCounter, 0 mSdLazyCounter, 675 mSolverCounterSat, 162 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s 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, 0.5s IncrementalHoareTripleChecker+Time [2022-03-18 05:23:14,394 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [695 Valid, 755 Invalid, 837 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [162 Valid, 675 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-18 05:23:14,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 594 states. [2022-03-18 05:23:14,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 594 to 542. [2022-03-18 05:23:14,451 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) [2022-03-18 05:23:14,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 542 states to 542 states and 686 transitions. [2022-03-18 05:23:14,452 INFO L78 Accepts]: Start accepts. Automaton has 542 states and 686 transitions. Word has length 49 [2022-03-18 05:23:14,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:23:14,453 INFO L478 AbstractCegarLoop]: Abstraction has 542 states and 686 transitions. [2022-03-18 05:23:14,453 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) [2022-03-18 05:23:14,453 INFO L276 IsEmpty]: Start isEmpty. Operand 542 states and 686 transitions. [2022-03-18 05:23:14,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-03-18 05:23:14,453 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:23:14,453 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 05:23:14,454 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-03-18 05:23:14,454 INFO L403 AbstractCegarLoop]: === Iteration 14 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:23:14,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:23:14,454 INFO L85 PathProgramCache]: Analyzing trace with hash -108540602, now seen corresponding path program 1 times [2022-03-18 05:23:14,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:23:14,454 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1861241670] [2022-03-18 05:23:14,454 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 05:23:14,454 INFO L85 PathProgramCache]: Analyzing trace with hash -108540602, now seen corresponding path program 2 times [2022-03-18 05:23:14,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:23:14,454 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905705408] [2022-03-18 05:23:14,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:23:14,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:23:14,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:14,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:23:14,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:14,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 05:23:14,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:14,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 05:23:14,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:14,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-03-18 05:23:14,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:14,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:23:14,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:14,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-03-18 05:23:14,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:14,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:23:14,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:23:14,588 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905705408] [2022-03-18 05:23:14,588 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1905705408] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:23:14,588 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:23:14,588 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-18 05:23:14,588 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:23:14,589 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1861241670] [2022-03-18 05:23:14,589 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1861241670] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:23:14,589 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:23:14,589 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-18 05:23:14,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871177811] [2022-03-18 05:23:14,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:23:14,589 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-18 05:23:14,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:23:14,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-18 05:23:14,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-03-18 05:23:14,590 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) [2022-03-18 05:23:15,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:23:15,200 INFO L93 Difference]: Finished difference Result 848 states and 1081 transitions. [2022-03-18 05:23:15,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-18 05:23:15,201 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 [2022-03-18 05:23:15,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:23:15,202 INFO L225 Difference]: With dead ends: 848 [2022-03-18 05:23:15,202 INFO L226 Difference]: Without dead ends: 583 [2022-03-18 05:23:15,203 INFO L911 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 [2022-03-18 05:23:15,204 INFO L912 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, 0.4s IncrementalHoareTripleChecker+Time [2022-03-18 05:23:15,204 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [573 Valid, 724 Invalid, 737 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [237 Valid, 500 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-18 05:23:15,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 583 states. [2022-03-18 05:23:15,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 583 to 556. [2022-03-18 05:23:15,266 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) [2022-03-18 05:23:15,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 556 states to 556 states and 706 transitions. [2022-03-18 05:23:15,268 INFO L78 Accepts]: Start accepts. Automaton has 556 states and 706 transitions. Word has length 55 [2022-03-18 05:23:15,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:23:15,268 INFO L478 AbstractCegarLoop]: Abstraction has 556 states and 706 transitions. [2022-03-18 05:23:15,268 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) [2022-03-18 05:23:15,268 INFO L276 IsEmpty]: Start isEmpty. Operand 556 states and 706 transitions. [2022-03-18 05:23:15,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-03-18 05:23:15,269 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:23:15,269 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 05:23:15,269 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-03-18 05:23:15,269 INFO L403 AbstractCegarLoop]: === Iteration 15 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:23:15,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:23:15,270 INFO L85 PathProgramCache]: Analyzing trace with hash -461236819, now seen corresponding path program 1 times [2022-03-18 05:23:15,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:23:15,270 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1858918177] [2022-03-18 05:23:15,270 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 05:23:15,270 INFO L85 PathProgramCache]: Analyzing trace with hash -461236819, now seen corresponding path program 2 times [2022-03-18 05:23:15,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:23:15,270 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622714297] [2022-03-18 05:23:15,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:23:15,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:23:15,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:15,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:23:15,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:15,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 05:23:15,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:15,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 05:23:15,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:15,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-18 05:23:15,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:15,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-18 05:23:15,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:15,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:23:15,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:23:15,442 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622714297] [2022-03-18 05:23:15,442 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [622714297] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:23:15,442 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:23:15,442 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-18 05:23:15,442 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:23:15,442 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1858918177] [2022-03-18 05:23:15,442 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1858918177] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:23:15,442 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:23:15,442 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-18 05:23:15,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073888740] [2022-03-18 05:23:15,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:23:15,443 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-18 05:23:15,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:23:15,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-18 05:23:15,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2022-03-18 05:23:15,443 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) [2022-03-18 05:23:16,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:23:16,825 INFO L93 Difference]: Finished difference Result 803 states and 1022 transitions. [2022-03-18 05:23:16,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-03-18 05:23:16,825 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 [2022-03-18 05:23:16,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:23:16,828 INFO L225 Difference]: With dead ends: 803 [2022-03-18 05:23:16,828 INFO L226 Difference]: Without dead ends: 728 [2022-03-18 05:23:16,829 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=161, Invalid=489, Unknown=0, NotChecked=0, Total=650 [2022-03-18 05:23:16,831 INFO L912 BasicCegarLoop]: 436 mSDtfsCounter, 867 mSDsluCounter, 786 mSDsCounter, 0 mSdLazyCounter, 1606 mSolverCounterSat, 339 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s 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, 0.9s IncrementalHoareTripleChecker+Time [2022-03-18 05:23:16,831 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [869 Valid, 1222 Invalid, 1945 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [339 Valid, 1606 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-03-18 05:23:16,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 728 states. [2022-03-18 05:23:16,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 728 to 585. [2022-03-18 05:23:16,900 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) [2022-03-18 05:23:16,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 585 states to 585 states and 739 transitions. [2022-03-18 05:23:16,902 INFO L78 Accepts]: Start accepts. Automaton has 585 states and 739 transitions. Word has length 52 [2022-03-18 05:23:16,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:23:16,902 INFO L478 AbstractCegarLoop]: Abstraction has 585 states and 739 transitions. [2022-03-18 05:23:16,902 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) [2022-03-18 05:23:16,902 INFO L276 IsEmpty]: Start isEmpty. Operand 585 states and 739 transitions. [2022-03-18 05:23:16,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-03-18 05:23:16,903 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:23:16,903 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 05:23:16,903 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-03-18 05:23:16,903 INFO L403 AbstractCegarLoop]: === Iteration 16 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:23:16,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:23:16,903 INFO L85 PathProgramCache]: Analyzing trace with hash -26084622, now seen corresponding path program 1 times [2022-03-18 05:23:16,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:23:16,904 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1322991907] [2022-03-18 05:23:16,904 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 05:23:16,904 INFO L85 PathProgramCache]: Analyzing trace with hash -26084622, now seen corresponding path program 2 times [2022-03-18 05:23:16,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:23:16,905 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135008710] [2022-03-18 05:23:16,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:23:16,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:23:16,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:16,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:23:16,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:16,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 05:23:16,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:17,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 05:23:17,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:17,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-18 05:23:17,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:17,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-18 05:23:17,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:17,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:23:17,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:23:17,039 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135008710] [2022-03-18 05:23:17,040 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1135008710] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:23:17,040 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:23:17,041 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-18 05:23:17,041 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:23:17,041 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1322991907] [2022-03-18 05:23:17,041 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1322991907] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:23:17,041 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:23:17,041 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-18 05:23:17,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866490689] [2022-03-18 05:23:17,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:23:17,041 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-18 05:23:17,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:23:17,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-18 05:23:17,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-03-18 05:23:17,042 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) [2022-03-18 05:23:17,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:23:17,766 INFO L93 Difference]: Finished difference Result 772 states and 979 transitions. [2022-03-18 05:23:17,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-18 05:23:17,767 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 [2022-03-18 05:23:17,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:23:17,769 INFO L225 Difference]: With dead ends: 772 [2022-03-18 05:23:17,769 INFO L226 Difference]: Without dead ends: 753 [2022-03-18 05:23:17,769 INFO L911 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 [2022-03-18 05:23:17,770 INFO L912 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 [2022-03-18 05:23:17,770 INFO L913 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] [2022-03-18 05:23:17,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 753 states. [2022-03-18 05:23:17,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 753 to 660. [2022-03-18 05:23:17,849 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) [2022-03-18 05:23:17,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 660 states to 660 states and 836 transitions. [2022-03-18 05:23:17,851 INFO L78 Accepts]: Start accepts. Automaton has 660 states and 836 transitions. Word has length 54 [2022-03-18 05:23:17,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:23:17,851 INFO L478 AbstractCegarLoop]: Abstraction has 660 states and 836 transitions. [2022-03-18 05:23:17,852 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) [2022-03-18 05:23:17,852 INFO L276 IsEmpty]: Start isEmpty. Operand 660 states and 836 transitions. [2022-03-18 05:23:17,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-03-18 05:23:17,853 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:23:17,853 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 05:23:17,853 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-03-18 05:23:17,853 INFO L403 AbstractCegarLoop]: === Iteration 17 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:23:17,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:23:17,854 INFO L85 PathProgramCache]: Analyzing trace with hash 1418983922, now seen corresponding path program 1 times [2022-03-18 05:23:17,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:23:17,854 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1527149121] [2022-03-18 05:23:17,854 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 05:23:17,854 INFO L85 PathProgramCache]: Analyzing trace with hash 1418983922, now seen corresponding path program 2 times [2022-03-18 05:23:17,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:23:17,854 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174569094] [2022-03-18 05:23:17,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:23:17,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:23:17,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:17,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:23:17,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:17,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 05:23:17,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:17,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 05:23:17,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:17,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-18 05:23:17,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:18,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-18 05:23:18,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:18,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:23:18,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:23:18,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174569094] [2022-03-18 05:23:18,019 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [174569094] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:23:18,019 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:23:18,019 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-03-18 05:23:18,019 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:23:18,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1527149121] [2022-03-18 05:23:18,019 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1527149121] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:23:18,019 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:23:18,019 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-03-18 05:23:18,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995056950] [2022-03-18 05:23:18,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:23:18,020 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-18 05:23:18,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:23:18,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-18 05:23:18,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-03-18 05:23:18,021 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) [2022-03-18 05:23:18,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:23:18,936 INFO L93 Difference]: Finished difference Result 1126 states and 1459 transitions. [2022-03-18 05:23:18,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-18 05:23:18,936 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 [2022-03-18 05:23:18,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:23:18,939 INFO L225 Difference]: With dead ends: 1126 [2022-03-18 05:23:18,939 INFO L226 Difference]: Without dead ends: 730 [2022-03-18 05:23:18,940 INFO L911 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 [2022-03-18 05:23:18,941 INFO L912 BasicCegarLoop]: 320 mSDtfsCounter, 555 mSDsluCounter, 378 mSDsCounter, 0 mSdLazyCounter, 818 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s 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, 0.7s IncrementalHoareTripleChecker+Time [2022-03-18 05:23:18,941 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [569 Valid, 698 Invalid, 941 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 818 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-18 05:23:18,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 730 states. [2022-03-18 05:23:19,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 730 to 672. [2022-03-18 05:23:19,034 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) [2022-03-18 05:23:19,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 672 states to 672 states and 853 transitions. [2022-03-18 05:23:19,038 INFO L78 Accepts]: Start accepts. Automaton has 672 states and 853 transitions. Word has length 54 [2022-03-18 05:23:19,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:23:19,038 INFO L478 AbstractCegarLoop]: Abstraction has 672 states and 853 transitions. [2022-03-18 05:23:19,038 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) [2022-03-18 05:23:19,038 INFO L276 IsEmpty]: Start isEmpty. Operand 672 states and 853 transitions. [2022-03-18 05:23:19,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-03-18 05:23:19,041 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:23:19,041 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 05:23:19,041 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-03-18 05:23:19,041 INFO L403 AbstractCegarLoop]: === Iteration 18 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:23:19,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:23:19,041 INFO L85 PathProgramCache]: Analyzing trace with hash -169363980, now seen corresponding path program 1 times [2022-03-18 05:23:19,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:23:19,041 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1482527565] [2022-03-18 05:23:19,042 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 05:23:19,042 INFO L85 PathProgramCache]: Analyzing trace with hash -169363980, now seen corresponding path program 2 times [2022-03-18 05:23:19,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:23:19,042 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145681493] [2022-03-18 05:23:19,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:23:19,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:23:19,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:19,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:23:19,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:19,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 05:23:19,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:19,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 05:23:19,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:19,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-18 05:23:19,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:19,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-18 05:23:19,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:19,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:23:19,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:23:19,240 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145681493] [2022-03-18 05:23:19,240 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2145681493] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:23:19,240 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:23:19,240 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-03-18 05:23:19,240 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:23:19,240 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1482527565] [2022-03-18 05:23:19,241 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1482527565] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:23:19,241 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:23:19,241 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-03-18 05:23:19,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233485164] [2022-03-18 05:23:19,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:23:19,241 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-03-18 05:23:19,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:23:19,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-03-18 05:23:19,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2022-03-18 05:23:19,241 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) [2022-03-18 05:23:20,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:23:20,116 INFO L93 Difference]: Finished difference Result 723 states and 913 transitions. [2022-03-18 05:23:20,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-03-18 05:23:20,116 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 [2022-03-18 05:23:20,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:23:20,118 INFO L225 Difference]: With dead ends: 723 [2022-03-18 05:23:20,118 INFO L226 Difference]: Without dead ends: 633 [2022-03-18 05:23:20,119 INFO L911 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 [2022-03-18 05:23:20,119 INFO L912 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 [2022-03-18 05:23:20,119 INFO L913 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] [2022-03-18 05:23:20,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 633 states. [2022-03-18 05:23:20,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 633 to 592. [2022-03-18 05:23:20,207 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) [2022-03-18 05:23:20,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 592 states to 592 states and 747 transitions. [2022-03-18 05:23:20,209 INFO L78 Accepts]: Start accepts. Automaton has 592 states and 747 transitions. Word has length 54 [2022-03-18 05:23:20,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:23:20,209 INFO L478 AbstractCegarLoop]: Abstraction has 592 states and 747 transitions. [2022-03-18 05:23:20,209 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) [2022-03-18 05:23:20,209 INFO L276 IsEmpty]: Start isEmpty. Operand 592 states and 747 transitions. [2022-03-18 05:23:20,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-03-18 05:23:20,210 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:23:20,210 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 05:23:20,210 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-03-18 05:23:20,210 INFO L403 AbstractCegarLoop]: === Iteration 19 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:23:20,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:23:20,210 INFO L85 PathProgramCache]: Analyzing trace with hash 481879247, now seen corresponding path program 1 times [2022-03-18 05:23:20,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:23:20,210 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1136642561] [2022-03-18 05:23:20,211 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 05:23:20,211 INFO L85 PathProgramCache]: Analyzing trace with hash 481879247, now seen corresponding path program 2 times [2022-03-18 05:23:20,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:23:20,211 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108253305] [2022-03-18 05:23:20,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:23:20,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:23:20,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:20,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:23:20,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:20,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 05:23:20,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:20,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 05:23:20,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:20,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-03-18 05:23:20,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:20,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-18 05:23:20,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:20,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:23:20,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:20,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:23:20,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:23:20,376 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108253305] [2022-03-18 05:23:20,377 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1108253305] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:23:20,377 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:23:20,377 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-03-18 05:23:20,377 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:23:20,377 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1136642561] [2022-03-18 05:23:20,377 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1136642561] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:23:20,377 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:23:20,377 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-03-18 05:23:20,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509215667] [2022-03-18 05:23:20,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:23:20,377 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-18 05:23:20,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:23:20,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-18 05:23:20,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-03-18 05:23:20,378 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) [2022-03-18 05:23:21,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:23:21,223 INFO L93 Difference]: Finished difference Result 889 states and 1132 transitions. [2022-03-18 05:23:21,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-18 05:23:21,223 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 [2022-03-18 05:23:21,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:23:21,225 INFO L225 Difference]: With dead ends: 889 [2022-03-18 05:23:21,225 INFO L226 Difference]: Without dead ends: 556 [2022-03-18 05:23:21,226 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-03-18 05:23:21,227 INFO L912 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 [2022-03-18 05:23:21,227 INFO L913 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] [2022-03-18 05:23:21,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 556 states. [2022-03-18 05:23:21,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 556 to 518. [2022-03-18 05:23:21,315 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) [2022-03-18 05:23:21,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 518 states to 518 states and 641 transitions. [2022-03-18 05:23:21,316 INFO L78 Accepts]: Start accepts. Automaton has 518 states and 641 transitions. Word has length 61 [2022-03-18 05:23:21,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:23:21,316 INFO L478 AbstractCegarLoop]: Abstraction has 518 states and 641 transitions. [2022-03-18 05:23:21,316 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) [2022-03-18 05:23:21,316 INFO L276 IsEmpty]: Start isEmpty. Operand 518 states and 641 transitions. [2022-03-18 05:23:21,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-03-18 05:23:21,317 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:23:21,317 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 05:23:21,317 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-03-18 05:23:21,317 INFO L403 AbstractCegarLoop]: === Iteration 20 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:23:21,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:23:21,317 INFO L85 PathProgramCache]: Analyzing trace with hash -355788470, now seen corresponding path program 1 times [2022-03-18 05:23:21,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:23:21,317 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [580980531] [2022-03-18 05:23:21,318 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 05:23:21,318 INFO L85 PathProgramCache]: Analyzing trace with hash -355788470, now seen corresponding path program 2 times [2022-03-18 05:23:21,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:23:21,318 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566391642] [2022-03-18 05:23:21,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:23:21,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:23:21,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:21,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:23:21,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:21,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 05:23:21,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:21,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 05:23:21,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:21,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-18 05:23:21,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:21,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-18 05:23:21,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:21,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:23:21,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:23:21,488 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566391642] [2022-03-18 05:23:21,488 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1566391642] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:23:21,488 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:23:21,488 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-03-18 05:23:21,488 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:23:21,488 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [580980531] [2022-03-18 05:23:21,488 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [580980531] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:23:21,488 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:23:21,489 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-03-18 05:23:21,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545634589] [2022-03-18 05:23:21,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:23:21,489 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-03-18 05:23:21,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:23:21,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-03-18 05:23:21,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2022-03-18 05:23:21,489 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) [2022-03-18 05:23:22,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:23:22,510 INFO L93 Difference]: Finished difference Result 583 states and 725 transitions. [2022-03-18 05:23:22,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-18 05:23:22,511 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 [2022-03-18 05:23:22,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:23:22,512 INFO L225 Difference]: With dead ends: 583 [2022-03-18 05:23:22,512 INFO L226 Difference]: Without dead ends: 579 [2022-03-18 05:23:22,513 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2022-03-18 05:23:22,513 INFO L912 BasicCegarLoop]: 339 mSDtfsCounter, 332 mSDsluCounter, 1298 mSDsCounter, 0 mSdLazyCounter, 1749 mSolverCounterSat, 145 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 338 SdHoareTripleChecker+Valid, 1637 SdHoareTripleChecker+Invalid, 1894 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 145 IncrementalHoareTripleChecker+Valid, 1749 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-18 05:23:22,513 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [338 Valid, 1637 Invalid, 1894 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [145 Valid, 1749 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-18 05:23:22,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 579 states. [2022-03-18 05:23:22,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 579 to 535. [2022-03-18 05:23:22,591 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) [2022-03-18 05:23:22,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 535 states to 535 states and 663 transitions. [2022-03-18 05:23:22,592 INFO L78 Accepts]: Start accepts. Automaton has 535 states and 663 transitions. Word has length 55 [2022-03-18 05:23:22,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:23:22,592 INFO L478 AbstractCegarLoop]: Abstraction has 535 states and 663 transitions. [2022-03-18 05:23:22,592 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) [2022-03-18 05:23:22,592 INFO L276 IsEmpty]: Start isEmpty. Operand 535 states and 663 transitions. [2022-03-18 05:23:22,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-03-18 05:23:22,593 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:23:22,593 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 05:23:22,593 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-03-18 05:23:22,593 INFO L403 AbstractCegarLoop]: === Iteration 21 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:23:22,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:23:22,593 INFO L85 PathProgramCache]: Analyzing trace with hash -355511640, now seen corresponding path program 1 times [2022-03-18 05:23:22,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:23:22,594 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [309111853] [2022-03-18 05:23:22,594 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 05:23:22,594 INFO L85 PathProgramCache]: Analyzing trace with hash -355511640, now seen corresponding path program 2 times [2022-03-18 05:23:22,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:23:22,594 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102357903] [2022-03-18 05:23:22,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:23:22,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:23:22,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:22,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:23:22,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:22,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 05:23:22,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:22,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 05:23:22,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:22,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-18 05:23:22,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:22,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-18 05:23:22,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:22,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:23:22,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:23:22,752 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102357903] [2022-03-18 05:23:22,752 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [102357903] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:23:22,752 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:23:22,752 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-03-18 05:23:22,752 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:23:22,752 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [309111853] [2022-03-18 05:23:22,752 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [309111853] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:23:22,752 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:23:22,752 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-03-18 05:23:22,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914108932] [2022-03-18 05:23:22,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:23:22,753 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-03-18 05:23:22,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:23:22,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-03-18 05:23:22,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2022-03-18 05:23:22,753 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) [2022-03-18 05:23:23,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:23:23,790 INFO L93 Difference]: Finished difference Result 578 states and 713 transitions. [2022-03-18 05:23:23,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-18 05:23:23,791 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 [2022-03-18 05:23:23,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:23:23,793 INFO L225 Difference]: With dead ends: 578 [2022-03-18 05:23:23,793 INFO L226 Difference]: Without dead ends: 563 [2022-03-18 05:23:23,793 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2022-03-18 05:23:23,794 INFO L912 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 [2022-03-18 05:23:23,794 INFO L913 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] [2022-03-18 05:23:23,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 563 states. [2022-03-18 05:23:23,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 563 to 532. [2022-03-18 05:23:23,875 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) [2022-03-18 05:23:23,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 532 states to 532 states and 659 transitions. [2022-03-18 05:23:23,877 INFO L78 Accepts]: Start accepts. Automaton has 532 states and 659 transitions. Word has length 55 [2022-03-18 05:23:23,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:23:23,877 INFO L478 AbstractCegarLoop]: Abstraction has 532 states and 659 transitions. [2022-03-18 05:23:23,877 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) [2022-03-18 05:23:23,877 INFO L276 IsEmpty]: Start isEmpty. Operand 532 states and 659 transitions. [2022-03-18 05:23:23,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-03-18 05:23:23,878 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:23:23,878 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 05:23:23,878 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-03-18 05:23:23,878 INFO L403 AbstractCegarLoop]: === Iteration 22 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:23:23,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:23:23,878 INFO L85 PathProgramCache]: Analyzing trace with hash 476341908, now seen corresponding path program 1 times [2022-03-18 05:23:23,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:23:23,878 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1535227912] [2022-03-18 05:23:23,879 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 05:23:23,879 INFO L85 PathProgramCache]: Analyzing trace with hash 476341908, now seen corresponding path program 2 times [2022-03-18 05:23:23,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:23:23,879 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960643816] [2022-03-18 05:23:23,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:23:23,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:23:23,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:23,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:23:23,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:23,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 05:23:23,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:23,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 05:23:23,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:23,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-18 05:23:24,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:24,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-03-18 05:23:24,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:24,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-18 05:23:24,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:24,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:23:24,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:23:24,037 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960643816] [2022-03-18 05:23:24,038 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [960643816] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:23:24,038 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:23:24,038 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-18 05:23:24,038 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:23:24,038 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1535227912] [2022-03-18 05:23:24,038 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1535227912] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:23:24,038 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:23:24,038 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-18 05:23:24,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106309690] [2022-03-18 05:23:24,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:23:24,038 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-18 05:23:24,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:23:24,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-18 05:23:24,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2022-03-18 05:23:24,039 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) [2022-03-18 05:23:25,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:23:25,216 INFO L93 Difference]: Finished difference Result 580 states and 714 transitions. [2022-03-18 05:23:25,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-18 05:23:25,217 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 [2022-03-18 05:23:25,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:23:25,219 INFO L225 Difference]: With dead ends: 580 [2022-03-18 05:23:25,219 INFO L226 Difference]: Without dead ends: 552 [2022-03-18 05:23:25,220 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2022-03-18 05:23:25,220 INFO L912 BasicCegarLoop]: 321 mSDtfsCounter, 296 mSDsluCounter, 525 mSDsCounter, 0 mSdLazyCounter, 1893 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 307 SdHoareTripleChecker+Valid, 846 SdHoareTripleChecker+Invalid, 1973 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 1893 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-03-18 05:23:25,221 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [307 Valid, 846 Invalid, 1973 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 1893 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-03-18 05:23:25,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 552 states. [2022-03-18 05:23:25,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 552 to 523. [2022-03-18 05:23:25,307 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) [2022-03-18 05:23:25,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 523 states to 523 states and 647 transitions. [2022-03-18 05:23:25,308 INFO L78 Accepts]: Start accepts. Automaton has 523 states and 647 transitions. Word has length 57 [2022-03-18 05:23:25,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:23:25,309 INFO L478 AbstractCegarLoop]: Abstraction has 523 states and 647 transitions. [2022-03-18 05:23:25,309 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) [2022-03-18 05:23:25,309 INFO L276 IsEmpty]: Start isEmpty. Operand 523 states and 647 transitions. [2022-03-18 05:23:25,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-03-18 05:23:25,309 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:23:25,310 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 05:23:25,310 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-03-18 05:23:25,310 INFO L403 AbstractCegarLoop]: === Iteration 23 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:23:25,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:23:25,310 INFO L85 PathProgramCache]: Analyzing trace with hash 1259461336, now seen corresponding path program 1 times [2022-03-18 05:23:25,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:23:25,310 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [547734911] [2022-03-18 05:23:25,310 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 05:23:25,310 INFO L85 PathProgramCache]: Analyzing trace with hash 1259461336, now seen corresponding path program 2 times [2022-03-18 05:23:25,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:23:25,311 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162590240] [2022-03-18 05:23:25,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:23:25,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:23:25,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:25,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:23:25,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:25,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 05:23:25,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:25,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 05:23:25,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:25,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-18 05:23:25,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:25,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-18 05:23:25,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:25,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:23:25,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:23:25,513 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162590240] [2022-03-18 05:23:25,513 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1162590240] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:23:25,513 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:23:25,513 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-03-18 05:23:25,514 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:23:25,514 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [547734911] [2022-03-18 05:23:25,514 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [547734911] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:23:25,514 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:23:25,514 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-03-18 05:23:25,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805274846] [2022-03-18 05:23:25,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:23:25,515 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-18 05:23:25,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:23:25,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-18 05:23:25,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-03-18 05:23:25,515 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) [2022-03-18 05:23:26,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:23:26,656 INFO L93 Difference]: Finished difference Result 560 states and 689 transitions. [2022-03-18 05:23:26,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-18 05:23:26,656 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 [2022-03-18 05:23:26,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:23:26,659 INFO L225 Difference]: With dead ends: 560 [2022-03-18 05:23:26,659 INFO L226 Difference]: Without dead ends: 542 [2022-03-18 05:23:26,659 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2022-03-18 05:23:26,663 INFO L912 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, 0.8s IncrementalHoareTripleChecker+Time [2022-03-18 05:23:26,663 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [722 Valid, 787 Invalid, 1432 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [212 Valid, 1220 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-18 05:23:26,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 542 states. [2022-03-18 05:23:26,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 542 to 505. [2022-03-18 05:23:26,744 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) [2022-03-18 05:23:26,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 505 states to 505 states and 622 transitions. [2022-03-18 05:23:26,746 INFO L78 Accepts]: Start accepts. Automaton has 505 states and 622 transitions. Word has length 56 [2022-03-18 05:23:26,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:23:26,746 INFO L478 AbstractCegarLoop]: Abstraction has 505 states and 622 transitions. [2022-03-18 05:23:26,746 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) [2022-03-18 05:23:26,746 INFO L276 IsEmpty]: Start isEmpty. Operand 505 states and 622 transitions. [2022-03-18 05:23:26,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-03-18 05:23:26,747 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:23:26,747 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 05:23:26,747 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-03-18 05:23:26,747 INFO L403 AbstractCegarLoop]: === Iteration 24 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:23:26,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:23:26,747 INFO L85 PathProgramCache]: Analyzing trace with hash -1146260298, now seen corresponding path program 1 times [2022-03-18 05:23:26,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:23:26,748 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [94281387] [2022-03-18 05:23:26,748 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 05:23:26,748 INFO L85 PathProgramCache]: Analyzing trace with hash -1146260298, now seen corresponding path program 2 times [2022-03-18 05:23:26,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:23:26,748 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931937346] [2022-03-18 05:23:26,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:23:26,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:23:26,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:26,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:23:26,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:26,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 05:23:26,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:26,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 05:23:26,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:26,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-03-18 05:23:26,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:26,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-18 05:23:26,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:26,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:23:26,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:26,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-18 05:23:26,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:26,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:23:26,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:23:26,944 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931937346] [2022-03-18 05:23:26,944 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [931937346] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:23:26,944 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:23:26,944 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-18 05:23:26,945 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:23:26,945 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [94281387] [2022-03-18 05:23:26,945 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [94281387] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:23:26,945 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:23:26,945 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-18 05:23:26,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965069273] [2022-03-18 05:23:26,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:23:26,945 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-18 05:23:26,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:23:26,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-18 05:23:26,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2022-03-18 05:23:26,946 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) [2022-03-18 05:23:27,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:23:27,875 INFO L93 Difference]: Finished difference Result 797 states and 994 transitions. [2022-03-18 05:23:27,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-18 05:23:27,876 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 [2022-03-18 05:23:27,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:23:27,882 INFO L225 Difference]: With dead ends: 797 [2022-03-18 05:23:27,882 INFO L226 Difference]: Without dead ends: 538 [2022-03-18 05:23:27,882 INFO L911 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 [2022-03-18 05:23:27,883 INFO L912 BasicCegarLoop]: 314 mSDtfsCounter, 605 mSDsluCounter, 594 mSDsCounter, 0 mSdLazyCounter, 1186 mSolverCounterSat, 201 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s 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, 0.7s IncrementalHoareTripleChecker+Time [2022-03-18 05:23:27,883 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [616 Valid, 908 Invalid, 1387 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [201 Valid, 1186 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-18 05:23:27,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 538 states. [2022-03-18 05:23:27,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 538 to 505. [2022-03-18 05:23:27,990 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) [2022-03-18 05:23:27,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 505 states to 505 states and 620 transitions. [2022-03-18 05:23:27,991 INFO L78 Accepts]: Start accepts. Automaton has 505 states and 620 transitions. Word has length 65 [2022-03-18 05:23:27,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:23:27,992 INFO L478 AbstractCegarLoop]: Abstraction has 505 states and 620 transitions. [2022-03-18 05:23:27,992 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) [2022-03-18 05:23:27,992 INFO L276 IsEmpty]: Start isEmpty. Operand 505 states and 620 transitions. [2022-03-18 05:23:27,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-03-18 05:23:27,992 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:23:27,993 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 05:23:27,993 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-03-18 05:23:27,993 INFO L403 AbstractCegarLoop]: === Iteration 25 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:23:27,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:23:27,993 INFO L85 PathProgramCache]: Analyzing trace with hash -702728848, now seen corresponding path program 1 times [2022-03-18 05:23:27,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:23:27,993 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [713947074] [2022-03-18 05:23:27,993 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 05:23:27,993 INFO L85 PathProgramCache]: Analyzing trace with hash -702728848, now seen corresponding path program 2 times [2022-03-18 05:23:27,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:23:27,994 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482688056] [2022-03-18 05:23:27,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:23:27,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:23:28,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:28,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:23:28,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:28,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 05:23:28,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:28,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 05:23:28,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:28,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-18 05:23:28,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:28,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-03-18 05:23:28,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:28,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-18 05:23:28,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:28,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:23:28,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:23:28,142 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482688056] [2022-03-18 05:23:28,142 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1482688056] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:23:28,142 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:23:28,142 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-03-18 05:23:28,143 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:23:28,143 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [713947074] [2022-03-18 05:23:28,143 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [713947074] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:23:28,143 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:23:28,143 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-03-18 05:23:28,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629619198] [2022-03-18 05:23:28,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:23:28,143 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-18 05:23:28,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:23:28,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-18 05:23:28,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2022-03-18 05:23:28,144 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) [2022-03-18 05:23:28,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:23:28,889 INFO L93 Difference]: Finished difference Result 555 states and 678 transitions. [2022-03-18 05:23:28,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-18 05:23:28,890 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 [2022-03-18 05:23:28,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:23:28,893 INFO L225 Difference]: With dead ends: 555 [2022-03-18 05:23:28,893 INFO L226 Difference]: Without dead ends: 534 [2022-03-18 05:23:28,893 INFO L911 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 [2022-03-18 05:23:28,894 INFO L912 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, 0.6s IncrementalHoareTripleChecker+Time [2022-03-18 05:23:28,894 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [452 Valid, 605 Invalid, 1087 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 956 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-18 05:23:28,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 534 states. [2022-03-18 05:23:28,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 534 to 504. [2022-03-18 05:23:28,986 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) [2022-03-18 05:23:28,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 504 states to 504 states and 614 transitions. [2022-03-18 05:23:28,987 INFO L78 Accepts]: Start accepts. Automaton has 504 states and 614 transitions. Word has length 59 [2022-03-18 05:23:28,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:23:28,988 INFO L478 AbstractCegarLoop]: Abstraction has 504 states and 614 transitions. [2022-03-18 05:23:28,988 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) [2022-03-18 05:23:28,988 INFO L276 IsEmpty]: Start isEmpty. Operand 504 states and 614 transitions. [2022-03-18 05:23:28,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-03-18 05:23:28,989 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:23:28,989 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 05:23:28,989 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-03-18 05:23:28,989 INFO L403 AbstractCegarLoop]: === Iteration 26 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:23:28,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:23:28,990 INFO L85 PathProgramCache]: Analyzing trace with hash 1957884754, now seen corresponding path program 1 times [2022-03-18 05:23:28,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:23:28,990 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1135212986] [2022-03-18 05:23:28,990 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 05:23:28,990 INFO L85 PathProgramCache]: Analyzing trace with hash 1957884754, now seen corresponding path program 2 times [2022-03-18 05:23:28,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:23:28,990 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71657007] [2022-03-18 05:23:28,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:23:28,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:23:29,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:29,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:23:29,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:29,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 05:23:29,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:29,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 05:23:29,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:29,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-18 05:23:29,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:29,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-03-18 05:23:29,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:29,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-18 05:23:29,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:29,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:23:29,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:23:29,170 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71657007] [2022-03-18 05:23:29,170 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [71657007] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:23:29,170 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:23:29,170 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-03-18 05:23:29,170 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:23:29,170 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1135212986] [2022-03-18 05:23:29,170 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1135212986] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:23:29,170 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:23:29,170 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-03-18 05:23:29,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260465597] [2022-03-18 05:23:29,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:23:29,171 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-18 05:23:29,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:23:29,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-18 05:23:29,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-03-18 05:23:29,171 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) [2022-03-18 05:23:30,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:23:30,261 INFO L93 Difference]: Finished difference Result 1241 states and 1496 transitions. [2022-03-18 05:23:30,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-03-18 05:23:30,262 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 [2022-03-18 05:23:30,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:23:30,264 INFO L225 Difference]: With dead ends: 1241 [2022-03-18 05:23:30,264 INFO L226 Difference]: Without dead ends: 758 [2022-03-18 05:23:30,265 INFO L911 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 [2022-03-18 05:23:30,265 INFO L912 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, 0.7s IncrementalHoareTripleChecker+Time [2022-03-18 05:23:30,266 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [1373 Valid, 619 Invalid, 1384 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [427 Valid, 957 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-18 05:23:30,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 758 states. [2022-03-18 05:23:30,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 758 to 616. [2022-03-18 05:23:30,373 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) [2022-03-18 05:23:30,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 616 states to 616 states and 740 transitions. [2022-03-18 05:23:30,374 INFO L78 Accepts]: Start accepts. Automaton has 616 states and 740 transitions. Word has length 61 [2022-03-18 05:23:30,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:23:30,374 INFO L478 AbstractCegarLoop]: Abstraction has 616 states and 740 transitions. [2022-03-18 05:23:30,374 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) [2022-03-18 05:23:30,374 INFO L276 IsEmpty]: Start isEmpty. Operand 616 states and 740 transitions. [2022-03-18 05:23:30,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-03-18 05:23:30,375 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:23:30,375 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 05:23:30,375 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-03-18 05:23:30,375 INFO L403 AbstractCegarLoop]: === Iteration 27 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:23:30,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:23:30,376 INFO L85 PathProgramCache]: Analyzing trace with hash -342937836, now seen corresponding path program 1 times [2022-03-18 05:23:30,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:23:30,376 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1124313218] [2022-03-18 05:23:30,376 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 05:23:30,376 INFO L85 PathProgramCache]: Analyzing trace with hash -342937836, now seen corresponding path program 2 times [2022-03-18 05:23:30,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:23:30,376 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963437786] [2022-03-18 05:23:30,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:23:30,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:23:30,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:30,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:23:30,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:30,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 05:23:30,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:30,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 05:23:30,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:30,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-18 05:23:30,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:30,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-03-18 05:23:30,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:30,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-18 05:23:30,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:30,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:23:30,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:23:30,528 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963437786] [2022-03-18 05:23:30,528 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [963437786] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:23:30,528 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:23:30,529 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-03-18 05:23:30,529 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:23:30,529 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1124313218] [2022-03-18 05:23:30,529 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1124313218] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:23:30,529 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:23:30,529 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-03-18 05:23:30,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455745575] [2022-03-18 05:23:30,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:23:30,529 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-18 05:23:30,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:23:30,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-18 05:23:30,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2022-03-18 05:23:30,530 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) [2022-03-18 05:23:31,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:23:31,483 INFO L93 Difference]: Finished difference Result 673 states and 807 transitions. [2022-03-18 05:23:31,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-18 05:23:31,484 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 [2022-03-18 05:23:31,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:23:31,485 INFO L225 Difference]: With dead ends: 673 [2022-03-18 05:23:31,486 INFO L226 Difference]: Without dead ends: 641 [2022-03-18 05:23:31,486 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2022-03-18 05:23:31,486 INFO L912 BasicCegarLoop]: 317 mSDtfsCounter, 243 mSDsluCounter, 468 mSDsCounter, 0 mSdLazyCounter, 1759 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s 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, 0.8s IncrementalHoareTripleChecker+Time [2022-03-18 05:23:31,486 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [255 Valid, 785 Invalid, 1830 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 1759 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-18 05:23:31,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 641 states. [2022-03-18 05:23:31,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 641 to 589. [2022-03-18 05:23:31,606 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) [2022-03-18 05:23:31,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 589 states to 589 states and 710 transitions. [2022-03-18 05:23:31,607 INFO L78 Accepts]: Start accepts. Automaton has 589 states and 710 transitions. Word has length 61 [2022-03-18 05:23:31,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:23:31,608 INFO L478 AbstractCegarLoop]: Abstraction has 589 states and 710 transitions. [2022-03-18 05:23:31,608 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) [2022-03-18 05:23:31,608 INFO L276 IsEmpty]: Start isEmpty. Operand 589 states and 710 transitions. [2022-03-18 05:23:31,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-03-18 05:23:31,609 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:23:31,609 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 05:23:31,609 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-03-18 05:23:31,610 INFO L403 AbstractCegarLoop]: === Iteration 28 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:23:31,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:23:31,610 INFO L85 PathProgramCache]: Analyzing trace with hash 2067524378, now seen corresponding path program 1 times [2022-03-18 05:23:31,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:23:31,610 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [989605082] [2022-03-18 05:23:31,611 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 05:23:31,611 INFO L85 PathProgramCache]: Analyzing trace with hash 2067524378, now seen corresponding path program 2 times [2022-03-18 05:23:31,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:23:31,611 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666015] [2022-03-18 05:23:31,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:23:31,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:23:31,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:31,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:23:31,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:31,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 05:23:31,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:31,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 05:23:31,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:31,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-18 05:23:31,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:31,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 05:23:31,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:31,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:23:31,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:23:31,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666015] [2022-03-18 05:23:31,760 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [666015] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:23:31,760 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:23:31,760 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-03-18 05:23:31,760 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:23:31,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [989605082] [2022-03-18 05:23:31,760 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [989605082] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:23:31,760 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:23:31,760 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-03-18 05:23:31,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114187317] [2022-03-18 05:23:31,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:23:31,761 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-03-18 05:23:31,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:23:31,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-03-18 05:23:31,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2022-03-18 05:23:31,761 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) [2022-03-18 05:23:32,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:23:32,480 INFO L93 Difference]: Finished difference Result 653 states and 784 transitions. [2022-03-18 05:23:32,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-18 05:23:32,480 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 [2022-03-18 05:23:32,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:23:32,482 INFO L225 Difference]: With dead ends: 653 [2022-03-18 05:23:32,482 INFO L226 Difference]: Without dead ends: 632 [2022-03-18 05:23:32,484 INFO L911 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 [2022-03-18 05:23:32,484 INFO L912 BasicCegarLoop]: 326 mSDtfsCounter, 232 mSDsluCounter, 1254 mSDsCounter, 0 mSdLazyCounter, 2071 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s 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, 0.5s IncrementalHoareTripleChecker+Time [2022-03-18 05:23:32,484 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [235 Valid, 1580 Invalid, 2166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 2071 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-18 05:23:32,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 632 states. [2022-03-18 05:23:32,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 632 to 585. [2022-03-18 05:23:32,592 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) [2022-03-18 05:23:32,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 585 states to 585 states and 704 transitions. [2022-03-18 05:23:32,593 INFO L78 Accepts]: Start accepts. Automaton has 585 states and 704 transitions. Word has length 60 [2022-03-18 05:23:32,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:23:32,593 INFO L478 AbstractCegarLoop]: Abstraction has 585 states and 704 transitions. [2022-03-18 05:23:32,594 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) [2022-03-18 05:23:32,594 INFO L276 IsEmpty]: Start isEmpty. Operand 585 states and 704 transitions. [2022-03-18 05:23:32,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-03-18 05:23:32,594 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:23:32,594 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 05:23:32,595 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-03-18 05:23:32,595 INFO L403 AbstractCegarLoop]: === Iteration 29 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:23:32,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:23:32,595 INFO L85 PathProgramCache]: Analyzing trace with hash -404247293, now seen corresponding path program 1 times [2022-03-18 05:23:32,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:23:32,595 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1078278649] [2022-03-18 05:23:32,595 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 05:23:32,595 INFO L85 PathProgramCache]: Analyzing trace with hash -404247293, now seen corresponding path program 2 times [2022-03-18 05:23:32,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:23:32,596 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845361881] [2022-03-18 05:23:32,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:23:32,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:23:32,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:32,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:23:32,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:32,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 05:23:32,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:32,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 05:23:32,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:32,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-03-18 05:23:32,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:32,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-18 05:23:32,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:32,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:23:32,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:32,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-18 05:23:32,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:32,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:23:32,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:23:32,783 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845361881] [2022-03-18 05:23:32,785 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1845361881] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:23:32,785 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:23:32,785 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-18 05:23:32,785 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:23:32,785 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1078278649] [2022-03-18 05:23:32,786 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1078278649] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:23:32,786 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:23:32,786 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-18 05:23:32,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168479736] [2022-03-18 05:23:32,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:23:32,786 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-18 05:23:32,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:23:32,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-18 05:23:32,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2022-03-18 05:23:32,787 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) [2022-03-18 05:23:33,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:23:33,604 INFO L93 Difference]: Finished difference Result 895 states and 1087 transitions. [2022-03-18 05:23:33,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-03-18 05:23:33,605 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 [2022-03-18 05:23:33,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:23:33,607 INFO L225 Difference]: With dead ends: 895 [2022-03-18 05:23:33,607 INFO L226 Difference]: Without dead ends: 669 [2022-03-18 05:23:33,608 INFO L911 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 [2022-03-18 05:23:33,608 INFO L912 BasicCegarLoop]: 328 mSDtfsCounter, 337 mSDsluCounter, 931 mSDsCounter, 0 mSdLazyCounter, 1159 mSolverCounterSat, 121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 345 SdHoareTripleChecker+Valid, 1259 SdHoareTripleChecker+Invalid, 1280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 121 IncrementalHoareTripleChecker+Valid, 1159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-18 05:23:33,608 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [345 Valid, 1259 Invalid, 1280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [121 Valid, 1159 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-18 05:23:33,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 669 states. [2022-03-18 05:23:33,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 669 to 585. [2022-03-18 05:23:33,734 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) [2022-03-18 05:23:33,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 585 states to 585 states and 702 transitions. [2022-03-18 05:23:33,735 INFO L78 Accepts]: Start accepts. Automaton has 585 states and 702 transitions. Word has length 68 [2022-03-18 05:23:33,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:23:33,740 INFO L478 AbstractCegarLoop]: Abstraction has 585 states and 702 transitions. [2022-03-18 05:23:33,741 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) [2022-03-18 05:23:33,741 INFO L276 IsEmpty]: Start isEmpty. Operand 585 states and 702 transitions. [2022-03-18 05:23:33,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-03-18 05:23:33,742 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:23:33,742 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 05:23:33,742 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-03-18 05:23:33,742 INFO L403 AbstractCegarLoop]: === Iteration 30 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:23:33,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:23:33,742 INFO L85 PathProgramCache]: Analyzing trace with hash 1830326818, now seen corresponding path program 1 times [2022-03-18 05:23:33,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:23:33,742 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [757488984] [2022-03-18 05:23:33,742 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 05:23:33,742 INFO L85 PathProgramCache]: Analyzing trace with hash 1830326818, now seen corresponding path program 2 times [2022-03-18 05:23:33,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:23:33,743 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81144539] [2022-03-18 05:23:33,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:23:33,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:23:33,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:33,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:23:33,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:33,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 05:23:33,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:33,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 05:23:33,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:33,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-18 05:23:33,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:33,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-18 05:23:33,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:33,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:23:33,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:23:33,912 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81144539] [2022-03-18 05:23:33,912 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [81144539] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:23:33,912 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:23:33,912 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-03-18 05:23:33,912 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:23:33,912 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [757488984] [2022-03-18 05:23:33,912 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [757488984] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:23:33,912 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:23:33,912 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-03-18 05:23:33,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496391682] [2022-03-18 05:23:33,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:23:33,913 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-03-18 05:23:33,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:23:33,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-03-18 05:23:33,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2022-03-18 05:23:33,913 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) [2022-03-18 05:23:34,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:23:34,816 INFO L93 Difference]: Finished difference Result 649 states and 776 transitions. [2022-03-18 05:23:34,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-18 05:23:34,816 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 [2022-03-18 05:23:34,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:23:34,818 INFO L225 Difference]: With dead ends: 649 [2022-03-18 05:23:34,818 INFO L226 Difference]: Without dead ends: 627 [2022-03-18 05:23:34,818 INFO L911 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 [2022-03-18 05:23:34,819 INFO L912 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 [2022-03-18 05:23:34,819 INFO L913 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] [2022-03-18 05:23:34,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 627 states. [2022-03-18 05:23:34,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 627 to 580. [2022-03-18 05:23:34,926 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) [2022-03-18 05:23:34,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 580 states to 580 states and 695 transitions. [2022-03-18 05:23:34,928 INFO L78 Accepts]: Start accepts. Automaton has 580 states and 695 transitions. Word has length 61 [2022-03-18 05:23:34,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:23:34,928 INFO L478 AbstractCegarLoop]: Abstraction has 580 states and 695 transitions. [2022-03-18 05:23:34,928 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) [2022-03-18 05:23:34,928 INFO L276 IsEmpty]: Start isEmpty. Operand 580 states and 695 transitions. [2022-03-18 05:23:34,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-03-18 05:23:34,929 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:23:34,929 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 05:23:34,929 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-03-18 05:23:34,929 INFO L403 AbstractCegarLoop]: === Iteration 31 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:23:34,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:23:34,930 INFO L85 PathProgramCache]: Analyzing trace with hash 900215348, now seen corresponding path program 1 times [2022-03-18 05:23:34,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:23:34,930 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [372356628] [2022-03-18 05:23:34,930 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 05:23:34,930 INFO L85 PathProgramCache]: Analyzing trace with hash 900215348, now seen corresponding path program 2 times [2022-03-18 05:23:34,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:23:34,930 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788098043] [2022-03-18 05:23:34,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:23:34,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:23:34,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:35,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:23:35,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:35,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 05:23:35,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:35,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 05:23:35,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:35,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-18 05:23:35,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:35,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-18 05:23:35,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:35,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:23:35,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:23:35,108 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788098043] [2022-03-18 05:23:35,108 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [788098043] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:23:35,108 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:23:35,108 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-03-18 05:23:35,108 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:23:35,108 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [372356628] [2022-03-18 05:23:35,108 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [372356628] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:23:35,108 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:23:35,108 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-03-18 05:23:35,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871342445] [2022-03-18 05:23:35,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:23:35,109 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-03-18 05:23:35,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:23:35,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-03-18 05:23:35,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2022-03-18 05:23:35,110 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) [2022-03-18 05:23:36,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:23:36,035 INFO L93 Difference]: Finished difference Result 644 states and 769 transitions. [2022-03-18 05:23:36,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-18 05:23:36,035 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 [2022-03-18 05:23:36,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:23:36,037 INFO L225 Difference]: With dead ends: 644 [2022-03-18 05:23:36,037 INFO L226 Difference]: Without dead ends: 623 [2022-03-18 05:23:36,037 INFO L911 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 [2022-03-18 05:23:36,038 INFO L912 BasicCegarLoop]: 315 mSDtfsCounter, 353 mSDsluCounter, 1195 mSDsCounter, 0 mSdLazyCounter, 1761 mSolverCounterSat, 137 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s 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, 0.7s IncrementalHoareTripleChecker+Time [2022-03-18 05:23:36,038 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [356 Valid, 1510 Invalid, 1898 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [137 Valid, 1761 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-18 05:23:36,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 623 states. [2022-03-18 05:23:36,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 623 to 576. [2022-03-18 05:23:36,167 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) [2022-03-18 05:23:36,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 576 states to 576 states and 689 transitions. [2022-03-18 05:23:36,168 INFO L78 Accepts]: Start accepts. Automaton has 576 states and 689 transitions. Word has length 61 [2022-03-18 05:23:36,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:23:36,169 INFO L478 AbstractCegarLoop]: Abstraction has 576 states and 689 transitions. [2022-03-18 05:23:36,169 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) [2022-03-18 05:23:36,169 INFO L276 IsEmpty]: Start isEmpty. Operand 576 states and 689 transitions. [2022-03-18 05:23:36,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-18 05:23:36,170 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:23:36,170 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 05:23:36,170 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-03-18 05:23:36,170 INFO L403 AbstractCegarLoop]: === Iteration 32 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:23:36,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:23:36,171 INFO L85 PathProgramCache]: Analyzing trace with hash 810140441, now seen corresponding path program 1 times [2022-03-18 05:23:36,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:23:36,171 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1186893948] [2022-03-18 05:23:36,171 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 05:23:36,171 INFO L85 PathProgramCache]: Analyzing trace with hash 810140441, now seen corresponding path program 2 times [2022-03-18 05:23:36,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:23:36,171 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819297462] [2022-03-18 05:23:36,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:23:36,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:23:36,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:36,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:23:36,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:36,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 05:23:36,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:36,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 05:23:36,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:36,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-03-18 05:23:36,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:36,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-18 05:23:36,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:36,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:23:36,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:36,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-18 05:23:36,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:36,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:23:36,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:23:36,334 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819297462] [2022-03-18 05:23:36,334 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1819297462] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:23:36,334 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:23:36,334 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-03-18 05:23:36,334 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:23:36,334 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1186893948] [2022-03-18 05:23:36,335 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1186893948] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:23:36,335 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:23:36,335 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-03-18 05:23:36,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157172540] [2022-03-18 05:23:36,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:23:36,335 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-18 05:23:36,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:23:36,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-18 05:23:36,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2022-03-18 05:23:36,336 INFO L87 Difference]: Start difference. First operand 576 states and 689 transitions. Second operand has 9 states, 9 states have (on average 5.777777777777778) internal successors, (52), 3 states have internal predecessors, (52), 3 states have call successors, (11), 9 states have call predecessors, (11), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-03-18 05:23:37,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:23:37,217 INFO L93 Difference]: Finished difference Result 1020 states and 1238 transitions. [2022-03-18 05:23:37,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-18 05:23:37,218 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.777777777777778) internal successors, (52), 3 states have internal predecessors, (52), 3 states have call successors, (11), 9 states have call predecessors, (11), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 70 [2022-03-18 05:23:37,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:23:37,220 INFO L225 Difference]: With dead ends: 1020 [2022-03-18 05:23:37,220 INFO L226 Difference]: Without dead ends: 767 [2022-03-18 05:23:37,221 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 12 SyntacticMatches, 3 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=57, Invalid=99, Unknown=0, NotChecked=0, Total=156 [2022-03-18 05:23:37,221 INFO L912 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, 0.6s IncrementalHoareTripleChecker+Time [2022-03-18 05:23:37,221 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [475 Valid, 887 Invalid, 895 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [146 Valid, 749 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-18 05:23:37,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 767 states. [2022-03-18 05:23:37,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 767 to 697. [2022-03-18 05:23:37,353 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) [2022-03-18 05:23:37,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 697 states to 697 states and 837 transitions. [2022-03-18 05:23:37,354 INFO L78 Accepts]: Start accepts. Automaton has 697 states and 837 transitions. Word has length 70 [2022-03-18 05:23:37,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:23:37,355 INFO L478 AbstractCegarLoop]: Abstraction has 697 states and 837 transitions. [2022-03-18 05:23:37,355 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.777777777777778) internal successors, (52), 3 states have internal predecessors, (52), 3 states have call successors, (11), 9 states have call predecessors, (11), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-03-18 05:23:37,355 INFO L276 IsEmpty]: Start isEmpty. Operand 697 states and 837 transitions. [2022-03-18 05:23:37,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-03-18 05:23:37,355 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:23:37,356 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 05:23:37,356 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-03-18 05:23:37,356 INFO L403 AbstractCegarLoop]: === Iteration 33 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:23:37,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:23:37,356 INFO L85 PathProgramCache]: Analyzing trace with hash 1259626467, now seen corresponding path program 1 times [2022-03-18 05:23:37,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:23:37,356 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [675128922] [2022-03-18 05:23:37,356 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 05:23:37,356 INFO L85 PathProgramCache]: Analyzing trace with hash 1259626467, now seen corresponding path program 2 times [2022-03-18 05:23:37,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:23:37,357 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043803031] [2022-03-18 05:23:37,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:23:37,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:23:37,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:37,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:23:37,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:37,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 05:23:37,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:37,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 05:23:37,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:37,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-18 05:23:37,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:37,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-03-18 05:23:37,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:37,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:23:37,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:23:37,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043803031] [2022-03-18 05:23:37,522 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1043803031] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:23:37,523 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:23:37,523 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-03-18 05:23:37,523 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:23:37,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [675128922] [2022-03-18 05:23:37,523 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [675128922] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:23:37,523 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:23:37,523 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-03-18 05:23:37,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398059180] [2022-03-18 05:23:37,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:23:37,523 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-03-18 05:23:37,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:23:37,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-03-18 05:23:37,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2022-03-18 05:23:37,524 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) [2022-03-18 05:23:38,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:23:38,365 INFO L93 Difference]: Finished difference Result 761 states and 912 transitions. [2022-03-18 05:23:38,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-18 05:23:38,365 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 [2022-03-18 05:23:38,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:23:38,368 INFO L225 Difference]: With dead ends: 761 [2022-03-18 05:23:38,368 INFO L226 Difference]: Without dead ends: 718 [2022-03-18 05:23:38,368 INFO L911 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 [2022-03-18 05:23:38,368 INFO L912 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 [2022-03-18 05:23:38,369 INFO L913 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] [2022-03-18 05:23:38,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 718 states. [2022-03-18 05:23:38,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 718 to 671. [2022-03-18 05:23:38,502 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) [2022-03-18 05:23:38,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 671 states to 671 states and 805 transitions. [2022-03-18 05:23:38,504 INFO L78 Accepts]: Start accepts. Automaton has 671 states and 805 transitions. Word has length 65 [2022-03-18 05:23:38,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:23:38,504 INFO L478 AbstractCegarLoop]: Abstraction has 671 states and 805 transitions. [2022-03-18 05:23:38,504 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) [2022-03-18 05:23:38,505 INFO L276 IsEmpty]: Start isEmpty. Operand 671 states and 805 transitions. [2022-03-18 05:23:38,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-18 05:23:38,505 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:23:38,505 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 05:23:38,506 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-03-18 05:23:38,506 INFO L403 AbstractCegarLoop]: === Iteration 34 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:23:38,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:23:38,507 INFO L85 PathProgramCache]: Analyzing trace with hash -2061698465, now seen corresponding path program 1 times [2022-03-18 05:23:38,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:23:38,507 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [988857667] [2022-03-18 05:23:38,507 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 05:23:38,507 INFO L85 PathProgramCache]: Analyzing trace with hash -2061698465, now seen corresponding path program 2 times [2022-03-18 05:23:38,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:23:38,507 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74450701] [2022-03-18 05:23:38,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:23:38,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:23:38,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:38,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:23:38,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:38,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 05:23:38,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:38,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 05:23:38,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:38,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-03-18 05:23:38,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:38,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-18 05:23:38,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:38,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:23:38,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:38,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-18 05:23:38,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:38,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-03-18 05:23:38,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:38,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:23:38,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:23:38,662 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [74450701] [2022-03-18 05:23:38,662 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [74450701] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:23:38,663 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:23:38,663 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-03-18 05:23:38,663 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:23:38,663 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [988857667] [2022-03-18 05:23:38,663 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [988857667] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:23:38,663 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:23:38,663 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-03-18 05:23:38,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480423997] [2022-03-18 05:23:38,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:23:38,663 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-18 05:23:38,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:23:38,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-18 05:23:38,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2022-03-18 05:23:38,664 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) [2022-03-18 05:23:39,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:23:39,478 INFO L93 Difference]: Finished difference Result 1023 states and 1237 transitions. [2022-03-18 05:23:39,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-03-18 05:23:39,478 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 [2022-03-18 05:23:39,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:23:39,481 INFO L225 Difference]: With dead ends: 1023 [2022-03-18 05:23:39,482 INFO L226 Difference]: Without dead ends: 706 [2022-03-18 05:23:39,482 INFO L911 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 [2022-03-18 05:23:39,483 INFO L912 BasicCegarLoop]: 402 mSDtfsCounter, 458 mSDsluCounter, 727 mSDsCounter, 0 mSdLazyCounter, 806 mSolverCounterSat, 136 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s 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, 0.5s IncrementalHoareTripleChecker+Time [2022-03-18 05:23:39,483 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [465 Valid, 1129 Invalid, 942 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [136 Valid, 806 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-18 05:23:39,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 706 states. [2022-03-18 05:23:39,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 706 to 653. [2022-03-18 05:23:39,606 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) [2022-03-18 05:23:39,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 653 states to 653 states and 775 transitions. [2022-03-18 05:23:39,607 INFO L78 Accepts]: Start accepts. Automaton has 653 states and 775 transitions. Word has length 79 [2022-03-18 05:23:39,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:23:39,607 INFO L478 AbstractCegarLoop]: Abstraction has 653 states and 775 transitions. [2022-03-18 05:23:39,607 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) [2022-03-18 05:23:39,607 INFO L276 IsEmpty]: Start isEmpty. Operand 653 states and 775 transitions. [2022-03-18 05:23:39,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-03-18 05:23:39,608 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:23:39,608 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 05:23:39,608 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-03-18 05:23:39,608 INFO L403 AbstractCegarLoop]: === Iteration 35 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:23:39,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:23:39,609 INFO L85 PathProgramCache]: Analyzing trace with hash -1335445745, now seen corresponding path program 1 times [2022-03-18 05:23:39,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:23:39,609 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [312235840] [2022-03-18 05:23:39,609 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 05:23:39,609 INFO L85 PathProgramCache]: Analyzing trace with hash -1335445745, now seen corresponding path program 2 times [2022-03-18 05:23:39,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:23:39,609 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630245366] [2022-03-18 05:23:39,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:23:39,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:23:39,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:39,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:23:39,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:39,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 05:23:39,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:39,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 05:23:39,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:39,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-03-18 05:23:39,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:39,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-18 05:23:39,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:39,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:23:39,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:39,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-18 05:23:39,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:39,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-03-18 05:23:39,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:39,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:23:39,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:39,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:23:39,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:23:39,801 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [630245366] [2022-03-18 05:23:39,802 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [630245366] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:23:39,802 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:23:39,802 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-03-18 05:23:39,802 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:23:39,802 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [312235840] [2022-03-18 05:23:39,802 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [312235840] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:23:39,802 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:23:39,802 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-03-18 05:23:39,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362454048] [2022-03-18 05:23:39,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:23:39,802 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-03-18 05:23:39,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:23:39,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-03-18 05:23:39,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2022-03-18 05:23:39,803 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) [2022-03-18 05:23:40,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:23:40,766 INFO L93 Difference]: Finished difference Result 1058 states and 1297 transitions. [2022-03-18 05:23:40,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-03-18 05:23:40,766 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 [2022-03-18 05:23:40,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:23:40,768 INFO L225 Difference]: With dead ends: 1058 [2022-03-18 05:23:40,768 INFO L226 Difference]: Without dead ends: 804 [2022-03-18 05:23:40,769 INFO L911 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 [2022-03-18 05:23:40,769 INFO L912 BasicCegarLoop]: 353 mSDtfsCounter, 470 mSDsluCounter, 1124 mSDsCounter, 0 mSdLazyCounter, 1264 mSolverCounterSat, 157 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s 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, 0.6s IncrementalHoareTripleChecker+Time [2022-03-18 05:23:40,769 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [481 Valid, 1477 Invalid, 1421 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [157 Valid, 1264 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-18 05:23:40,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 804 states. [2022-03-18 05:23:40,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 804 to 617. [2022-03-18 05:23:40,892 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) [2022-03-18 05:23:40,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 617 states to 617 states and 729 transitions. [2022-03-18 05:23:40,893 INFO L78 Accepts]: Start accepts. Automaton has 617 states and 729 transitions. Word has length 80 [2022-03-18 05:23:40,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:23:40,893 INFO L478 AbstractCegarLoop]: Abstraction has 617 states and 729 transitions. [2022-03-18 05:23:40,893 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) [2022-03-18 05:23:40,893 INFO L276 IsEmpty]: Start isEmpty. Operand 617 states and 729 transitions. [2022-03-18 05:23:40,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-03-18 05:23:40,894 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:23:40,894 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 05:23:40,895 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-03-18 05:23:40,895 INFO L403 AbstractCegarLoop]: === Iteration 36 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:23:40,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:23:40,895 INFO L85 PathProgramCache]: Analyzing trace with hash 510679092, now seen corresponding path program 1 times [2022-03-18 05:23:40,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:23:40,895 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [458754620] [2022-03-18 05:23:40,895 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 05:23:40,895 INFO L85 PathProgramCache]: Analyzing trace with hash 510679092, now seen corresponding path program 2 times [2022-03-18 05:23:40,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:23:40,895 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154152577] [2022-03-18 05:23:40,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:23:40,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:23:40,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:40,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:23:40,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:41,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 05:23:41,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:41,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 05:23:41,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:41,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-18 05:23:41,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:41,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-18 05:23:41,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:41,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-18 05:23:41,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:41,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:23:41,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:41,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-18 05:23:41,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:41,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-03-18 05:23:41,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:41,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:23:41,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:23:41,155 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154152577] [2022-03-18 05:23:41,155 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1154152577] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:23:41,155 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:23:41,155 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-03-18 05:23:41,155 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:23:41,155 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [458754620] [2022-03-18 05:23:41,156 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [458754620] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:23:41,156 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:23:41,156 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-03-18 05:23:41,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064595983] [2022-03-18 05:23:41,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:23:41,156 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-03-18 05:23:41,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:23:41,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-03-18 05:23:41,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2022-03-18 05:23:41,157 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) [2022-03-18 05:23:42,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:23:42,197 INFO L93 Difference]: Finished difference Result 727 states and 856 transitions. [2022-03-18 05:23:42,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-03-18 05:23:42,197 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 [2022-03-18 05:23:42,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:23:42,199 INFO L225 Difference]: With dead ends: 727 [2022-03-18 05:23:42,199 INFO L226 Difference]: Without dead ends: 706 [2022-03-18 05:23:42,200 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=101, Invalid=499, Unknown=0, NotChecked=0, Total=600 [2022-03-18 05:23:42,200 INFO L912 BasicCegarLoop]: 302 mSDtfsCounter, 456 mSDsluCounter, 1364 mSDsCounter, 0 mSdLazyCounter, 1610 mSolverCounterSat, 177 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 464 SdHoareTripleChecker+Valid, 1666 SdHoareTripleChecker+Invalid, 1787 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 177 IncrementalHoareTripleChecker+Valid, 1610 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-18 05:23:42,200 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [464 Valid, 1666 Invalid, 1787 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [177 Valid, 1610 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-18 05:23:42,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 706 states. [2022-03-18 05:23:42,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 706 to 625. [2022-03-18 05:23:42,349 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) [2022-03-18 05:23:42,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 625 states to 625 states and 739 transitions. [2022-03-18 05:23:42,350 INFO L78 Accepts]: Start accepts. Automaton has 625 states and 739 transitions. Word has length 85 [2022-03-18 05:23:42,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:23:42,350 INFO L478 AbstractCegarLoop]: Abstraction has 625 states and 739 transitions. [2022-03-18 05:23:42,350 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) [2022-03-18 05:23:42,350 INFO L276 IsEmpty]: Start isEmpty. Operand 625 states and 739 transitions. [2022-03-18 05:23:42,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-03-18 05:23:42,351 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:23:42,351 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 05:23:42,351 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-03-18 05:23:42,351 INFO L403 AbstractCegarLoop]: === Iteration 37 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:23:42,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:23:42,351 INFO L85 PathProgramCache]: Analyzing trace with hash 297903782, now seen corresponding path program 1 times [2022-03-18 05:23:42,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:23:42,352 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1586576686] [2022-03-18 05:23:42,352 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 05:23:42,352 INFO L85 PathProgramCache]: Analyzing trace with hash 297903782, now seen corresponding path program 2 times [2022-03-18 05:23:42,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:23:42,352 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913971389] [2022-03-18 05:23:42,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:23:42,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:23:42,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:42,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:23:42,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:42,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 05:23:42,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:42,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 05:23:42,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:42,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-18 05:23:42,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:42,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-18 05:23:42,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:42,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-18 05:23:42,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:42,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:23:42,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:42,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-18 05:23:42,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:42,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-03-18 05:23:42,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:42,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:23:42,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:23:42,575 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913971389] [2022-03-18 05:23:42,579 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [913971389] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:23:42,580 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:23:42,580 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-03-18 05:23:42,580 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:23:42,580 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1586576686] [2022-03-18 05:23:42,580 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1586576686] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:23:42,580 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:23:42,580 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-03-18 05:23:42,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110806936] [2022-03-18 05:23:42,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:23:42,581 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-03-18 05:23:42,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:23:42,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-03-18 05:23:42,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2022-03-18 05:23:42,582 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) [2022-03-18 05:23:43,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:23:43,761 INFO L93 Difference]: Finished difference Result 727 states and 855 transitions. [2022-03-18 05:23:43,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-03-18 05:23:43,761 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 [2022-03-18 05:23:43,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:23:43,763 INFO L225 Difference]: With dead ends: 727 [2022-03-18 05:23:43,763 INFO L226 Difference]: Without dead ends: 706 [2022-03-18 05:23:43,764 INFO L911 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 [2022-03-18 05:23:43,764 INFO L912 BasicCegarLoop]: 318 mSDtfsCounter, 222 mSDsluCounter, 1498 mSDsCounter, 0 mSdLazyCounter, 1959 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 226 SdHoareTripleChecker+Valid, 1816 SdHoareTripleChecker+Invalid, 2030 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 1959 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-03-18 05:23:43,764 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [226 Valid, 1816 Invalid, 2030 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 1959 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-03-18 05:23:43,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 706 states. [2022-03-18 05:23:43,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 706 to 617. [2022-03-18 05:23:43,919 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) [2022-03-18 05:23:43,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 617 states to 617 states and 728 transitions. [2022-03-18 05:23:43,920 INFO L78 Accepts]: Start accepts. Automaton has 617 states and 728 transitions. Word has length 86 [2022-03-18 05:23:43,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:23:43,920 INFO L478 AbstractCegarLoop]: Abstraction has 617 states and 728 transitions. [2022-03-18 05:23:43,920 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) [2022-03-18 05:23:43,921 INFO L276 IsEmpty]: Start isEmpty. Operand 617 states and 728 transitions. [2022-03-18 05:23:43,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-03-18 05:23:43,921 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:23:43,922 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 05:23:43,922 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-03-18 05:23:43,922 INFO L403 AbstractCegarLoop]: === Iteration 38 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:23:43,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:23:43,922 INFO L85 PathProgramCache]: Analyzing trace with hash -973728084, now seen corresponding path program 1 times [2022-03-18 05:23:43,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:23:43,922 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [138152630] [2022-03-18 05:23:43,922 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 05:23:43,922 INFO L85 PathProgramCache]: Analyzing trace with hash -973728084, now seen corresponding path program 2 times [2022-03-18 05:23:43,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:23:43,923 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849445330] [2022-03-18 05:23:43,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:23:43,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:23:43,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:43,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:23:43,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:44,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 05:23:44,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:44,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 05:23:44,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:44,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-18 05:23:44,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:44,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-03-18 05:23:44,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:44,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-18 05:23:44,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:44,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-03-18 05:23:44,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:44,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:23:44,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:23:44,099 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849445330] [2022-03-18 05:23:44,100 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [849445330] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:23:44,100 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:23:44,100 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-18 05:23:44,100 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:23:44,100 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [138152630] [2022-03-18 05:23:44,100 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [138152630] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:23:44,100 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:23:44,100 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-18 05:23:44,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540141943] [2022-03-18 05:23:44,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:23:44,101 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-18 05:23:44,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:23:44,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-18 05:23:44,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-03-18 05:23:44,102 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) [2022-03-18 05:23:45,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:23:45,086 INFO L93 Difference]: Finished difference Result 1164 states and 1359 transitions. [2022-03-18 05:23:45,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-03-18 05:23:45,086 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 [2022-03-18 05:23:45,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:23:45,090 INFO L225 Difference]: With dead ends: 1164 [2022-03-18 05:23:45,090 INFO L226 Difference]: Without dead ends: 764 [2022-03-18 05:23:45,091 INFO L911 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 [2022-03-18 05:23:45,091 INFO L912 BasicCegarLoop]: 332 mSDtfsCounter, 825 mSDsluCounter, 212 mSDsCounter, 0 mSdLazyCounter, 1044 mSolverCounterSat, 272 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s 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, 0.6s IncrementalHoareTripleChecker+Time [2022-03-18 05:23:45,091 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [832 Valid, 544 Invalid, 1316 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [272 Valid, 1044 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-18 05:23:45,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 764 states. [2022-03-18 05:23:45,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 764 to 738. [2022-03-18 05:23:45,268 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) [2022-03-18 05:23:45,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 738 states to 738 states and 859 transitions. [2022-03-18 05:23:45,269 INFO L78 Accepts]: Start accepts. Automaton has 738 states and 859 transitions. Word has length 81 [2022-03-18 05:23:45,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:23:45,270 INFO L478 AbstractCegarLoop]: Abstraction has 738 states and 859 transitions. [2022-03-18 05:23:45,270 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) [2022-03-18 05:23:45,270 INFO L276 IsEmpty]: Start isEmpty. Operand 738 states and 859 transitions. [2022-03-18 05:23:45,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-03-18 05:23:45,271 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:23:45,271 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 05:23:45,271 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-03-18 05:23:45,271 INFO L403 AbstractCegarLoop]: === Iteration 39 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:23:45,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:23:45,271 INFO L85 PathProgramCache]: Analyzing trace with hash -1810115048, now seen corresponding path program 1 times [2022-03-18 05:23:45,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:23:45,271 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1652075842] [2022-03-18 05:23:45,272 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 05:23:45,272 INFO L85 PathProgramCache]: Analyzing trace with hash -1810115048, now seen corresponding path program 2 times [2022-03-18 05:23:45,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:23:45,272 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997227778] [2022-03-18 05:23:45,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:23:45,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:23:45,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-18 05:23:45,284 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-03-18 05:23:45,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-18 05:23:45,327 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-03-18 05:23:45,327 INFO L130 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found a feasible trace [2022-03-18 05:23:45,327 INFO L614 BasicCegarLoop]: Counterexample is feasible [2022-03-18 05:23:45,329 INFO L788 garLoopResultBuilder]: Registering result UNSAFE for location errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-03-18 05:23:45,330 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-03-18 05:23:45,332 INFO L718 BasicCegarLoop]: Path program histogram: [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2] [2022-03-18 05:23:45,334 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-03-18 05:23:45,349 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.03 05:23:45 BoogieIcfgContainer [2022-03-18 05:23:45,349 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-03-18 05:23:45,352 INFO L158 Benchmark]: Toolchain (without parser) took 47817.28ms. Allocated memory was 170.9MB in the beginning and 549.5MB in the end (delta: 378.5MB). Free memory was 120.2MB in the beginning and 267.3MB in the end (delta: -147.1MB). Peak memory consumption was 231.1MB. Max. memory is 8.0GB. [2022-03-18 05:23:45,352 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 170.9MB. Free memory is still 137.2MB. There was no memory consumed. Max. memory is 8.0GB. [2022-03-18 05:23:45,352 INFO L158 Benchmark]: CACSL2BoogieTranslator took 309.25ms. Allocated memory is still 170.9MB. Free memory was 120.0MB in the beginning and 137.1MB in the end (delta: -17.1MB). Peak memory consumption was 12.9MB. Max. memory is 8.0GB. [2022-03-18 05:23:45,353 INFO L158 Benchmark]: Boogie Preprocessor took 40.43ms. Allocated memory is still 170.9MB. Free memory was 137.1MB in the beginning and 133.7MB in the end (delta: 3.4MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2022-03-18 05:23:45,353 INFO L158 Benchmark]: RCFGBuilder took 722.18ms. Allocated memory is still 170.9MB. Free memory was 133.7MB in the beginning and 144.5MB in the end (delta: -10.8MB). Peak memory consumption was 43.7MB. Max. memory is 8.0GB. [2022-03-18 05:23:45,353 INFO L158 Benchmark]: TraceAbstraction took 46742.09ms. Allocated memory was 170.9MB in the beginning and 549.5MB in the end (delta: 378.5MB). Free memory was 144.0MB in the beginning and 267.3MB in the end (delta: -123.3MB). Peak memory consumption was 255.3MB. Max. memory is 8.0GB. [2022-03-18 05:23:45,353 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 170.9MB. Free memory is still 137.2MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 309.25ms. Allocated memory is still 170.9MB. Free memory was 120.0MB in the beginning and 137.1MB in the end (delta: -17.1MB). Peak memory consumption was 12.9MB. Max. memory is 8.0GB. * Boogie Preprocessor took 40.43ms. Allocated memory is still 170.9MB. Free memory was 137.1MB in the beginning and 133.7MB in the end (delta: 3.4MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * RCFGBuilder took 722.18ms. Allocated memory is still 170.9MB. Free memory was 133.7MB in the beginning and 144.5MB in the end (delta: -10.8MB). Peak memory consumption was 43.7MB. Max. memory is 8.0GB. * TraceAbstraction took 46742.09ms. Allocated memory was 170.9MB in the beginning and 549.5MB in the end (delta: 378.5MB). Free memory was 144.0MB in the beginning and 267.3MB in the end (delta: -123.3MB). Peak memory consumption was 255.3MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 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: 46.7s, OverallIterations: 39, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 36.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 19838 SdHoareTripleChecker+Valid, 27.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 19544 mSDsluCounter, 37140 SdHoareTripleChecker+Invalid, 22.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 23846 mSDsCounter, 6584 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 46130 IncrementalHoareTripleChecker+Invalid, 52714 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 6584 mSolverCounterUnsat, 13294 mSDtfsCounter, 46130 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 862 GetRequests, 355 SyntacticMatches, 7 SemanticMatches, 500 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1033 ImplicationChecksByTransitivity, 7.6s 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: 3.6s 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! [2022-03-18 05:23:45,395 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...