/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCTransformed.xml -s ../../../trunk/examples/settings/loopacceleration/qvasr/qvasr_64.epf -i ../../../trunk/examples/svcomp/ntdrivers-simplified/cdaudio_simpl1.cil-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-05ce600 [2022-02-24 00:29:55,234 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-24 00:29:55,235 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-24 00:29:55,289 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-02-24 00:29:55,289 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-02-24 00:29:55,292 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-02-24 00:29:55,294 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-02-24 00:29:55,296 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-02-24 00:29:55,297 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-02-24 00:29:55,301 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-02-24 00:29:55,302 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-02-24 00:29:55,303 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-02-24 00:29:55,304 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-02-24 00:29:55,305 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-02-24 00:29:55,306 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-02-24 00:29:55,309 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-02-24 00:29:55,309 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-02-24 00:29:55,310 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-02-24 00:29:55,312 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-02-24 00:29:55,317 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-02-24 00:29:55,317 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-02-24 00:29:55,318 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-02-24 00:29:55,320 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-02-24 00:29:55,321 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-02-24 00:29:55,326 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-02-24 00:29:55,326 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-02-24 00:29:55,327 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-02-24 00:29:55,328 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-02-24 00:29:55,328 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-02-24 00:29:55,329 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2022-02-24 00:29:55,334 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-24 00:29:55,335 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-24 00:29:55,335 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-24 00:29:55,336 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/loopacceleration/qvasr/qvasr_64.epf [2022-02-24 00:29:55,363 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-24 00:29:55,364 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-24 00:29:55,365 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-02-24 00:29:55,366 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-02-24 00:29:55,366 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-02-24 00:29:55,367 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-02-24 00:29:55,367 INFO L138 SettingsManager]: * Use SBE=true [2022-02-24 00:29:55,367 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-24 00:29:55,367 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-24 00:29:55,367 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-24 00:29:55,368 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-24 00:29:55,368 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-24 00:29:55,368 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-24 00:29:55,368 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-24 00:29:55,368 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-24 00:29:55,368 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-24 00:29:55,369 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-24 00:29:55,369 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-24 00:29:55,369 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-24 00:29:55,369 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-24 00:29:55,369 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-24 00:29:55,369 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-02-24 00:29:55,369 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-02-24 00:29:55,369 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-02-24 00:29:55,369 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-02-24 00:29:55,370 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-24 00:29:55,370 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-02-24 00:29:55,370 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-02-24 00:29:55,371 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-02-24 00:29:55,371 INFO L138 SettingsManager]: * TransformationType=LOOP_ACCELERATION_QVASR 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-02-24 00:29:55,582 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-24 00:29:55,597 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-24 00:29:55,599 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-24 00:29:55,599 INFO L271 PluginConnector]: Initializing CDTParser... [2022-02-24 00:29:55,607 INFO L275 PluginConnector]: CDTParser initialized [2022-02-24 00:29:55,608 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ntdrivers-simplified/cdaudio_simpl1.cil-1.c [2022-02-24 00:29:55,656 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a5e3e3921/0e20b935c7244749bc736863ae4af4b7/FLAG68e002e89 [2022-02-24 00:29:56,113 INFO L306 CDTParser]: Found 1 translation units. [2022-02-24 00:29:56,118 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ntdrivers-simplified/cdaudio_simpl1.cil-1.c [2022-02-24 00:29:56,134 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a5e3e3921/0e20b935c7244749bc736863ae4af4b7/FLAG68e002e89 [2022-02-24 00:29:56,627 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a5e3e3921/0e20b935c7244749bc736863ae4af4b7 [2022-02-24 00:29:56,629 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-24 00:29:56,630 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-02-24 00:29:56,632 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-02-24 00:29:56,632 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-02-24 00:29:56,634 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-02-24 00:29:56,635 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 12:29:56" (1/1) ... [2022-02-24 00:29:56,635 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41e22e30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:29:56, skipping insertion in model container [2022-02-24 00:29:56,636 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 12:29:56" (1/1) ... [2022-02-24 00:29:56,644 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-02-24 00:29:56,698 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-02-24 00:29:56,871 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/cdaudio_simpl1.cil-1.c[2074,2087] [2022-02-24 00:29:57,037 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-24 00:29:57,044 INFO L203 MainTranslator]: Completed pre-run [2022-02-24 00:29:57,070 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/cdaudio_simpl1.cil-1.c[2074,2087] [2022-02-24 00:29:57,162 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-24 00:29:57,180 INFO L208 MainTranslator]: Completed translation [2022-02-24 00:29:57,180 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:29:57 WrapperNode [2022-02-24 00:29:57,180 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-02-24 00:29:57,181 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-24 00:29:57,182 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-24 00:29:57,182 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-24 00:29:57,196 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:29:57" (1/1) ... [2022-02-24 00:29:57,196 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:29:57" (1/1) ... [2022-02-24 00:29:57,222 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:29:57" (1/1) ... [2022-02-24 00:29:57,222 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:29:57" (1/1) ... [2022-02-24 00:29:57,251 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:29:57" (1/1) ... [2022-02-24 00:29:57,265 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:29:57" (1/1) ... [2022-02-24 00:29:57,269 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:29:57" (1/1) ... [2022-02-24 00:29:57,277 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-24 00:29:57,278 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-24 00:29:57,278 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-24 00:29:57,278 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-24 00:29:57,279 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:29:57" (1/1) ... [2022-02-24 00:29:57,285 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-24 00:29:57,295 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-24 00:29:57,307 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) [2022-02-24 00:29:57,314 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 [2022-02-24 00:29:57,339 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-02-24 00:29:57,339 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-24 00:29:57,339 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-02-24 00:29:57,339 INFO L138 BoogieDeclarations]: Found implementation of procedure errorFn [2022-02-24 00:29:57,340 INFO L138 BoogieDeclarations]: Found implementation of procedure _BLAST_init [2022-02-24 00:29:57,340 INFO L138 BoogieDeclarations]: Found implementation of procedure SendSrbSynchronous [2022-02-24 00:29:57,340 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioSignalCompletion [2022-02-24 00:29:57,340 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioStartDevice [2022-02-24 00:29:57,340 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioPnp [2022-02-24 00:29:57,340 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioDeviceControl [2022-02-24 00:29:57,340 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioSendToNextDriver [2022-02-24 00:29:57,340 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioIsPlayActive [2022-02-24 00:29:57,341 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudio535DeviceControl [2022-02-24 00:29:57,341 INFO L138 BoogieDeclarations]: Found implementation of procedure AG_SetStatusAndReturn [2022-02-24 00:29:57,341 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudio435DeviceControl [2022-02-24 00:29:57,341 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioAtapiDeviceControl [2022-02-24 00:29:57,341 INFO L138 BoogieDeclarations]: Found implementation of procedure HpCdrProcessLastSession [2022-02-24 00:29:57,341 INFO L138 BoogieDeclarations]: Found implementation of procedure HPCdrCompletion [2022-02-24 00:29:57,341 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioHPCdrDeviceControl [2022-02-24 00:29:57,341 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioForwardIrpSynchronous [2022-02-24 00:29:57,342 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioUnload [2022-02-24 00:29:57,342 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioPower [2022-02-24 00:29:57,342 INFO L138 BoogieDeclarations]: Found implementation of procedure stub_driver_init [2022-02-24 00:29:57,342 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-02-24 00:29:57,342 INFO L138 BoogieDeclarations]: Found implementation of procedure stubMoreProcessingRequired [2022-02-24 00:29:57,342 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCallDriver [2022-02-24 00:29:57,342 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCompleteRequest [2022-02-24 00:29:57,343 INFO L138 BoogieDeclarations]: Found implementation of procedure KeSetEvent [2022-02-24 00:29:57,343 INFO L138 BoogieDeclarations]: Found implementation of procedure KeWaitForSingleObject [2022-02-24 00:29:57,343 INFO L138 BoogieDeclarations]: Found implementation of procedure PoCallDriver [2022-02-24 00:29:57,343 INFO L138 BoogieDeclarations]: Found implementation of procedure ZwClose [2022-02-24 00:29:57,343 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-02-24 00:29:57,343 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-02-24 00:29:57,343 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-02-24 00:29:57,343 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-02-24 00:29:57,344 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2022-02-24 00:29:57,344 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-02-24 00:29:57,344 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2022-02-24 00:29:57,344 INFO L130 BoogieDeclarations]: Found specification of procedure SendSrbSynchronous [2022-02-24 00:29:57,344 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioSignalCompletion [2022-02-24 00:29:57,344 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioStartDevice [2022-02-24 00:29:57,344 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioPnp [2022-02-24 00:29:57,344 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioDeviceControl [2022-02-24 00:29:57,345 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioSendToNextDriver [2022-02-24 00:29:57,345 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioIsPlayActive [2022-02-24 00:29:57,345 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudio535DeviceControl [2022-02-24 00:29:57,345 INFO L130 BoogieDeclarations]: Found specification of procedure AG_SetStatusAndReturn [2022-02-24 00:29:57,345 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudio435DeviceControl [2022-02-24 00:29:57,345 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioAtapiDeviceControl [2022-02-24 00:29:57,345 INFO L130 BoogieDeclarations]: Found specification of procedure HPCdrCompletion [2022-02-24 00:29:57,345 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioHPCdrDeviceControl [2022-02-24 00:29:57,345 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioForwardIrpSynchronous [2022-02-24 00:29:57,346 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioPower [2022-02-24 00:29:57,346 INFO L130 BoogieDeclarations]: Found specification of procedure IofCallDriver [2022-02-24 00:29:57,346 INFO L130 BoogieDeclarations]: Found specification of procedure KeSetEvent [2022-02-24 00:29:57,346 INFO L130 BoogieDeclarations]: Found specification of procedure KeWaitForSingleObject [2022-02-24 00:29:57,346 INFO L130 BoogieDeclarations]: Found specification of procedure PoCallDriver [2022-02-24 00:29:57,346 INFO L130 BoogieDeclarations]: Found specification of procedure ZwClose [2022-02-24 00:29:57,346 INFO L130 BoogieDeclarations]: Found specification of procedure IofCompleteRequest [2022-02-24 00:29:57,347 INFO L130 BoogieDeclarations]: Found specification of procedure errorFn [2022-02-24 00:29:57,347 INFO L130 BoogieDeclarations]: Found specification of procedure _BLAST_init [2022-02-24 00:29:57,347 INFO L130 BoogieDeclarations]: Found specification of procedure HpCdrProcessLastSession [2022-02-24 00:29:57,347 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioUnload [2022-02-24 00:29:57,347 INFO L130 BoogieDeclarations]: Found specification of procedure stub_driver_init [2022-02-24 00:29:57,347 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-02-24 00:29:57,347 INFO L130 BoogieDeclarations]: Found specification of procedure stubMoreProcessingRequired [2022-02-24 00:29:57,347 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-02-24 00:29:57,348 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-02-24 00:29:57,348 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-24 00:29:57,348 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-02-24 00:29:57,348 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-02-24 00:29:57,348 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-02-24 00:29:57,549 INFO L234 CfgBuilder]: Building ICFG [2022-02-24 00:29:57,551 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-24 00:29:57,697 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-24 00:29:57,767 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume !false; [2022-02-24 00:29:57,768 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##14: assume false; [2022-02-24 00:29:57,772 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-24 00:29:57,796 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##18: assume !false; [2022-02-24 00:29:57,797 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##17: assume false; [2022-02-24 00:29:57,814 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-24 00:29:57,825 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##16: assume !false; [2022-02-24 00:29:57,825 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume false; [2022-02-24 00:29:57,885 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-24 00:29:57,946 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##6: assume !false; [2022-02-24 00:29:57,946 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L305: #res := 0; [2022-02-24 00:29:57,947 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##5: assume false; [2022-02-24 00:29:57,953 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-24 00:29:58,115 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##21: assume false; [2022-02-24 00:29:58,115 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##22: assume !false; [2022-02-24 00:29:58,116 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-24 00:29:58,138 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##21: assume !false; [2022-02-24 00:29:58,138 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##20: assume false; [2022-02-24 00:29:58,168 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-24 00:29:58,181 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##10: assume !false; [2022-02-24 00:29:58,182 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##9: assume false; [2022-02-24 00:29:58,185 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-24 00:29:58,326 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##26: assume !false; [2022-02-24 00:29:58,326 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##25: assume false; [2022-02-24 00:29:58,335 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-24 00:29:58,338 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-02-24 00:29:58,338 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-02-24 00:29:58,358 INFO L275 CfgBuilder]: Performing block encoding [2022-02-24 00:29:58,373 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-24 00:29:58,373 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-02-24 00:29:58,376 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 12:29:58 BoogieIcfgContainer [2022-02-24 00:29:58,377 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-24 00:29:58,379 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-02-24 00:29:58,379 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-02-24 00:29:58,380 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-02-24 00:29:58,382 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 12:29:58" (1/1) ... [2022-02-24 00:29:58,449 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 24.02 12:29:58 BasicIcfg [2022-02-24 00:29:58,449 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-02-24 00:29:58,451 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-24 00:29:58,451 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-24 00:29:58,454 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-24 00:29:58,454 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.02 12:29:56" (1/4) ... [2022-02-24 00:29:58,454 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@625fa895 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 12:29:58, skipping insertion in model container [2022-02-24 00:29:58,456 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:29:57" (2/4) ... [2022-02-24 00:29:58,456 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@625fa895 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 12:29:58, skipping insertion in model container [2022-02-24 00:29:58,456 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 12:29:58" (3/4) ... [2022-02-24 00:29:58,457 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@625fa895 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.02 12:29:58, skipping insertion in model container [2022-02-24 00:29:58,457 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 24.02 12:29:58" (4/4) ... [2022-02-24 00:29:58,457 INFO L111 eAbstractionObserver]: Analyzing ICFG cdaudio_simpl1.cil-1.cqvasr [2022-02-24 00:29:58,462 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-02-24 00:29:58,462 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-24 00:29:58,504 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-24 00:29:58,509 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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, mLoopAccelerationTechnique=FAST_UPR [2022-02-24 00:29:58,509 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-02-24 00:29:58,565 INFO L276 IsEmpty]: Start isEmpty. Operand has 517 states, 383 states have (on average 1.4882506527415145) internal successors, (570), 404 states have internal predecessors, (570), 103 states have call successors, (103), 29 states have call predecessors, (103), 29 states have return successors, (103), 98 states have call predecessors, (103), 103 states have call successors, (103) [2022-02-24 00:29:58,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-02-24 00:29:58,571 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 00:29:58,571 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 00:29:58,572 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 00:29:58,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 00:29:58,606 INFO L85 PathProgramCache]: Analyzing trace with hash 784814983, now seen corresponding path program 1 times [2022-02-24 00:29:58,615 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-24 00:29:58,616 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623222398] [2022-02-24 00:29:58,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 00:29:58,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 00:29:58,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:29:58,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 00:29:58,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:29:59,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 00:29:59,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:29:59,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 00:29:59,040 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-24 00:29:59,041 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623222398] [2022-02-24 00:29:59,041 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1623222398] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 00:29:59,041 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 00:29:59,042 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-02-24 00:29:59,043 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267113415] [2022-02-24 00:29:59,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 00:29:59,048 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-24 00:29:59,048 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-24 00:29:59,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-24 00:29:59,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-02-24 00:29:59,077 INFO L87 Difference]: Start difference. First operand has 517 states, 383 states have (on average 1.4882506527415145) internal successors, (570), 404 states have internal predecessors, (570), 103 states have call successors, (103), 29 states have call predecessors, (103), 29 states have return successors, (103), 98 states have call predecessors, (103), 103 states have call successors, (103) Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 3 states have internal predecessors, (14), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-02-24 00:30:01,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 00:30:01,521 INFO L93 Difference]: Finished difference Result 1047 states and 1683 transitions. [2022-02-24 00:30:01,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-02-24 00:30:01,523 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), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 20 [2022-02-24 00:30:01,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 00:30:01,548 INFO L225 Difference]: With dead ends: 1047 [2022-02-24 00:30:01,548 INFO L226 Difference]: Without dead ends: 665 [2022-02-24 00:30:01,557 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-02-24 00:30:01,560 INFO L933 BasicCegarLoop]: 741 mSDtfsCounter, 399 mSDsluCounter, 272 mSDsCounter, 0 mSdLazyCounter, 1595 mSolverCounterSat, 158 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 400 SdHoareTripleChecker+Valid, 1013 SdHoareTripleChecker+Invalid, 1753 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 158 IncrementalHoareTripleChecker+Valid, 1595 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-02-24 00:30:01,561 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [400 Valid, 1013 Invalid, 1753 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [158 Valid, 1595 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-02-24 00:30:01,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 665 states. [2022-02-24 00:30:01,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 665 to 509. [2022-02-24 00:30:01,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 509 states, 378 states have (on average 1.4576719576719577) internal successors, (551), 397 states have internal predecessors, (551), 103 states have call successors, (103), 29 states have call predecessors, (103), 27 states have return successors, (86), 86 states have call predecessors, (86), 86 states have call successors, (86) [2022-02-24 00:30:01,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 509 states to 509 states and 740 transitions. [2022-02-24 00:30:01,693 INFO L78 Accepts]: Start accepts. Automaton has 509 states and 740 transitions. Word has length 20 [2022-02-24 00:30:01,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 00:30:01,694 INFO L470 AbstractCegarLoop]: Abstraction has 509 states and 740 transitions. [2022-02-24 00:30:01,694 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 3 states have internal predecessors, (14), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-02-24 00:30:01,694 INFO L276 IsEmpty]: Start isEmpty. Operand 509 states and 740 transitions. [2022-02-24 00:30:01,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-02-24 00:30:01,695 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 00:30:01,696 INFO L514 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] [2022-02-24 00:30:01,696 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-24 00:30:01,696 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 00:30:01,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 00:30:01,698 INFO L85 PathProgramCache]: Analyzing trace with hash -30338372, now seen corresponding path program 1 times [2022-02-24 00:30:01,698 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-24 00:30:01,698 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971859352] [2022-02-24 00:30:01,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 00:30:01,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 00:30:01,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:30:01,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 00:30:01,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:30:01,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 00:30:01,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:30:01,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-24 00:30:01,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:30:01,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 00:30:01,926 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-24 00:30:01,926 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971859352] [2022-02-24 00:30:01,926 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1971859352] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 00:30:01,926 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 00:30:01,927 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-02-24 00:30:01,927 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195937761] [2022-02-24 00:30:01,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 00:30:01,928 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-02-24 00:30:01,929 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-24 00:30:01,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-02-24 00:30:01,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-02-24 00:30:01,929 INFO L87 Difference]: Start difference. First operand 509 states and 740 transitions. Second operand has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 3 states have internal predecessors, (16), 3 states have call successors, (6), 6 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-02-24 00:30:03,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 00:30:03,615 INFO L93 Difference]: Finished difference Result 967 states and 1429 transitions. [2022-02-24 00:30:03,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-02-24 00:30:03,616 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 3 states have internal predecessors, (16), 3 states have call successors, (6), 6 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 25 [2022-02-24 00:30:03,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 00:30:03,623 INFO L225 Difference]: With dead ends: 967 [2022-02-24 00:30:03,623 INFO L226 Difference]: Without dead ends: 846 [2022-02-24 00:30:03,624 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-02-24 00:30:03,625 INFO L933 BasicCegarLoop]: 851 mSDtfsCounter, 1891 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 927 mSolverCounterSat, 586 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1895 SdHoareTripleChecker+Valid, 1023 SdHoareTripleChecker+Invalid, 1513 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 586 IncrementalHoareTripleChecker+Valid, 927 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-02-24 00:30:03,625 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1895 Valid, 1023 Invalid, 1513 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [586 Valid, 927 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-02-24 00:30:03,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 846 states. [2022-02-24 00:30:03,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 846 to 664. [2022-02-24 00:30:03,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 664 states, 502 states have (on average 1.408366533864542) internal successors, (707), 510 states have internal predecessors, (707), 112 states have call successors, (112), 40 states have call predecessors, (112), 49 states have return successors, (145), 119 states have call predecessors, (145), 99 states have call successors, (145) [2022-02-24 00:30:03,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 664 states to 664 states and 964 transitions. [2022-02-24 00:30:03,689 INFO L78 Accepts]: Start accepts. Automaton has 664 states and 964 transitions. Word has length 25 [2022-02-24 00:30:03,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 00:30:03,690 INFO L470 AbstractCegarLoop]: Abstraction has 664 states and 964 transitions. [2022-02-24 00:30:03,690 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 3 states have internal predecessors, (16), 3 states have call successors, (6), 6 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-02-24 00:30:03,690 INFO L276 IsEmpty]: Start isEmpty. Operand 664 states and 964 transitions. [2022-02-24 00:30:03,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-02-24 00:30:03,691 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 00:30:03,692 INFO L514 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] [2022-02-24 00:30:03,692 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-02-24 00:30:03,692 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 00:30:03,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 00:30:03,693 INFO L85 PathProgramCache]: Analyzing trace with hash -759392990, now seen corresponding path program 1 times [2022-02-24 00:30:03,693 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-24 00:30:03,693 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264666554] [2022-02-24 00:30:03,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 00:30:03,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 00:30:03,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:30:03,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 00:30:03,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:30:03,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 00:30:03,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:30:03,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-24 00:30:03,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:30:03,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 00:30:03,864 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-24 00:30:03,864 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264666554] [2022-02-24 00:30:03,864 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1264666554] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 00:30:03,865 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 00:30:03,865 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-02-24 00:30:03,865 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740349813] [2022-02-24 00:30:03,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 00:30:03,865 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-02-24 00:30:03,865 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-24 00:30:03,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-02-24 00:30:03,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-02-24 00:30:03,866 INFO L87 Difference]: Start difference. First operand 664 states and 964 transitions. Second operand has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 3 states have internal predecessors, (19), 3 states have call successors, (8), 6 states have call predecessors, (8), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-02-24 00:30:05,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 00:30:05,790 INFO L93 Difference]: Finished difference Result 1148 states and 1650 transitions. [2022-02-24 00:30:05,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-02-24 00:30:05,795 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 3 states have internal predecessors, (19), 3 states have call successors, (8), 6 states have call predecessors, (8), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 30 [2022-02-24 00:30:05,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 00:30:05,802 INFO L225 Difference]: With dead ends: 1148 [2022-02-24 00:30:05,802 INFO L226 Difference]: Without dead ends: 970 [2022-02-24 00:30:05,803 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-02-24 00:30:05,804 INFO L933 BasicCegarLoop]: 725 mSDtfsCounter, 1121 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 1647 mSolverCounterSat, 250 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1131 SdHoareTripleChecker+Valid, 886 SdHoareTripleChecker+Invalid, 1897 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 250 IncrementalHoareTripleChecker+Valid, 1647 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-02-24 00:30:05,805 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1131 Valid, 886 Invalid, 1897 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [250 Valid, 1647 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-02-24 00:30:05,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 970 states. [2022-02-24 00:30:05,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 970 to 789. [2022-02-24 00:30:05,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 789 states, 611 states have (on average 1.4042553191489362) internal successors, (858), 615 states have internal predecessors, (858), 114 states have call successors, (114), 46 states have call predecessors, (114), 63 states have return successors, (163), 130 states have call predecessors, (163), 104 states have call successors, (163) [2022-02-24 00:30:05,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 789 states to 789 states and 1135 transitions. [2022-02-24 00:30:05,861 INFO L78 Accepts]: Start accepts. Automaton has 789 states and 1135 transitions. Word has length 30 [2022-02-24 00:30:05,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 00:30:05,861 INFO L470 AbstractCegarLoop]: Abstraction has 789 states and 1135 transitions. [2022-02-24 00:30:05,862 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 3 states have internal predecessors, (19), 3 states have call successors, (8), 6 states have call predecessors, (8), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-02-24 00:30:05,862 INFO L276 IsEmpty]: Start isEmpty. Operand 789 states and 1135 transitions. [2022-02-24 00:30:05,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-02-24 00:30:05,863 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 00:30:05,863 INFO L514 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] [2022-02-24 00:30:05,864 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-02-24 00:30:05,864 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 00:30:05,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 00:30:05,864 INFO L85 PathProgramCache]: Analyzing trace with hash 1280175921, now seen corresponding path program 1 times [2022-02-24 00:30:05,864 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-24 00:30:05,865 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972211142] [2022-02-24 00:30:05,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 00:30:05,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 00:30:05,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:30:05,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 00:30:05,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:30:05,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 00:30:05,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:30:05,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-24 00:30:05,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:30:05,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 00:30:05,989 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-24 00:30:05,989 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972211142] [2022-02-24 00:30:05,989 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1972211142] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 00:30:05,989 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 00:30:05,989 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-02-24 00:30:05,990 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883619049] [2022-02-24 00:30:05,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 00:30:05,990 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-02-24 00:30:05,990 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-24 00:30:05,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-02-24 00:30:05,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-02-24 00:30:05,991 INFO L87 Difference]: Start difference. First operand 789 states and 1135 transitions. Second operand has 6 states, 6 states have (on average 3.5) internal successors, (21), 3 states have internal predecessors, (21), 2 states have call successors, (7), 5 states have call predecessors, (7), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-02-24 00:30:07,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 00:30:07,977 INFO L93 Difference]: Finished difference Result 1630 states and 2449 transitions. [2022-02-24 00:30:07,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-02-24 00:30:07,977 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 3 states have internal predecessors, (21), 2 states have call successors, (7), 5 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 31 [2022-02-24 00:30:07,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 00:30:07,985 INFO L225 Difference]: With dead ends: 1630 [2022-02-24 00:30:07,985 INFO L226 Difference]: Without dead ends: 1344 [2022-02-24 00:30:07,987 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-02-24 00:30:07,997 INFO L933 BasicCegarLoop]: 1006 mSDtfsCounter, 1482 mSDsluCounter, 256 mSDsCounter, 0 mSdLazyCounter, 1324 mSolverCounterSat, 529 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1485 SdHoareTripleChecker+Valid, 1262 SdHoareTripleChecker+Invalid, 1853 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 529 IncrementalHoareTripleChecker+Valid, 1324 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-02-24 00:30:07,998 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1485 Valid, 1262 Invalid, 1853 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [529 Valid, 1324 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-02-24 00:30:08,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1344 states. [2022-02-24 00:30:08,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1344 to 907. [2022-02-24 00:30:08,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 907 states, 708 states have (on average 1.4138418079096045) internal successors, (1001), 711 states have internal predecessors, (1001), 127 states have call successors, (127), 54 states have call predecessors, (127), 71 states have return successors, (220), 144 states have call predecessors, (220), 117 states have call successors, (220) [2022-02-24 00:30:08,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 907 states to 907 states and 1348 transitions. [2022-02-24 00:30:08,072 INFO L78 Accepts]: Start accepts. Automaton has 907 states and 1348 transitions. Word has length 31 [2022-02-24 00:30:08,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 00:30:08,072 INFO L470 AbstractCegarLoop]: Abstraction has 907 states and 1348 transitions. [2022-02-24 00:30:08,072 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 3 states have internal predecessors, (21), 2 states have call successors, (7), 5 states have call predecessors, (7), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-02-24 00:30:08,072 INFO L276 IsEmpty]: Start isEmpty. Operand 907 states and 1348 transitions. [2022-02-24 00:30:08,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-02-24 00:30:08,076 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 00:30:08,076 INFO L514 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] [2022-02-24 00:30:08,076 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-02-24 00:30:08,076 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 00:30:08,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 00:30:08,077 INFO L85 PathProgramCache]: Analyzing trace with hash 998226604, now seen corresponding path program 1 times [2022-02-24 00:30:08,077 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-24 00:30:08,077 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011213291] [2022-02-24 00:30:08,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 00:30:08,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 00:30:08,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:30:08,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 00:30:08,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:30:08,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 00:30:08,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:30:08,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-24 00:30:08,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:30:08,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 00:30:08,287 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-24 00:30:08,287 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011213291] [2022-02-24 00:30:08,288 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2011213291] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 00:30:08,288 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 00:30:08,288 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-02-24 00:30:08,288 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751805782] [2022-02-24 00:30:08,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 00:30:08,288 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-02-24 00:30:08,288 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-24 00:30:08,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-02-24 00:30:08,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-02-24 00:30:08,289 INFO L87 Difference]: Start difference. First operand 907 states and 1348 transitions. Second operand has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 6 states have internal predecessors, (22), 4 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-02-24 00:30:10,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 00:30:10,527 INFO L93 Difference]: Finished difference Result 1632 states and 2483 transitions. [2022-02-24 00:30:10,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-02-24 00:30:10,528 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 6 states have internal predecessors, (22), 4 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 32 [2022-02-24 00:30:10,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 00:30:10,534 INFO L225 Difference]: With dead ends: 1632 [2022-02-24 00:30:10,534 INFO L226 Difference]: Without dead ends: 1046 [2022-02-24 00:30:10,536 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2022-02-24 00:30:10,537 INFO L933 BasicCegarLoop]: 738 mSDtfsCounter, 2782 mSDsluCounter, 289 mSDsCounter, 0 mSdLazyCounter, 1610 mSolverCounterSat, 984 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2788 SdHoareTripleChecker+Valid, 1027 SdHoareTripleChecker+Invalid, 2594 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 984 IncrementalHoareTripleChecker+Valid, 1610 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-02-24 00:30:10,537 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2788 Valid, 1027 Invalid, 2594 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [984 Valid, 1610 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-02-24 00:30:10,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1046 states. [2022-02-24 00:30:10,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1046 to 835. [2022-02-24 00:30:10,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 835 states, 649 states have (on average 1.399075500770416) internal successors, (908), 653 states have internal predecessors, (908), 118 states have call successors, (118), 50 states have call predecessors, (118), 67 states have return successors, (177), 134 states have call predecessors, (177), 108 states have call successors, (177) [2022-02-24 00:30:10,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 835 states to 835 states and 1203 transitions. [2022-02-24 00:30:10,615 INFO L78 Accepts]: Start accepts. Automaton has 835 states and 1203 transitions. Word has length 32 [2022-02-24 00:30:10,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 00:30:10,616 INFO L470 AbstractCegarLoop]: Abstraction has 835 states and 1203 transitions. [2022-02-24 00:30:10,616 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 6 states have internal predecessors, (22), 4 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-02-24 00:30:10,617 INFO L276 IsEmpty]: Start isEmpty. Operand 835 states and 1203 transitions. [2022-02-24 00:30:10,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-02-24 00:30:10,619 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 00:30:10,619 INFO L514 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] [2022-02-24 00:30:10,619 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-02-24 00:30:10,620 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 00:30:10,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 00:30:10,620 INFO L85 PathProgramCache]: Analyzing trace with hash 936943045, now seen corresponding path program 1 times [2022-02-24 00:30:10,620 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-24 00:30:10,620 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123841183] [2022-02-24 00:30:10,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 00:30:10,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 00:30:10,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:30:10,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 00:30:10,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:30:10,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 00:30:10,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:30:10,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-24 00:30:10,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:30:10,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 00:30:10,743 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-24 00:30:10,743 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123841183] [2022-02-24 00:30:10,744 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [123841183] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 00:30:10,744 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 00:30:10,744 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-02-24 00:30:10,744 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297670639] [2022-02-24 00:30:10,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 00:30:10,744 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-02-24 00:30:10,744 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-24 00:30:10,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-02-24 00:30:10,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-02-24 00:30:10,745 INFO L87 Difference]: Start difference. First operand 835 states and 1203 transitions. Second operand has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 3 states have internal predecessors, (25), 3 states have call successors, (8), 6 states have call predecessors, (8), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-02-24 00:30:12,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 00:30:12,683 INFO L93 Difference]: Finished difference Result 965 states and 1425 transitions. [2022-02-24 00:30:12,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-02-24 00:30:12,683 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 3 states have internal predecessors, (25), 3 states have call successors, (8), 6 states have call predecessors, (8), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 36 [2022-02-24 00:30:12,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 00:30:12,688 INFO L225 Difference]: With dead ends: 965 [2022-02-24 00:30:12,688 INFO L226 Difference]: Without dead ends: 961 [2022-02-24 00:30:12,689 INFO L932 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 [2022-02-24 00:30:12,689 INFO L933 BasicCegarLoop]: 713 mSDtfsCounter, 407 mSDsluCounter, 270 mSDsCounter, 0 mSdLazyCounter, 1880 mSolverCounterSat, 142 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 408 SdHoareTripleChecker+Valid, 983 SdHoareTripleChecker+Invalid, 2022 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 142 IncrementalHoareTripleChecker+Valid, 1880 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-02-24 00:30:12,689 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [408 Valid, 983 Invalid, 2022 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [142 Valid, 1880 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-02-24 00:30:12,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 961 states. [2022-02-24 00:30:12,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 961 to 834. [2022-02-24 00:30:12,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 834 states, 649 states have (on average 1.3959938366718028) internal successors, (906), 652 states have internal predecessors, (906), 117 states have call successors, (117), 50 states have call predecessors, (117), 67 states have return successors, (177), 134 states have call predecessors, (177), 108 states have call successors, (177) [2022-02-24 00:30:12,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 834 states to 834 states and 1200 transitions. [2022-02-24 00:30:12,745 INFO L78 Accepts]: Start accepts. Automaton has 834 states and 1200 transitions. Word has length 36 [2022-02-24 00:30:12,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 00:30:12,745 INFO L470 AbstractCegarLoop]: Abstraction has 834 states and 1200 transitions. [2022-02-24 00:30:12,745 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 3 states have internal predecessors, (25), 3 states have call successors, (8), 6 states have call predecessors, (8), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-02-24 00:30:12,746 INFO L276 IsEmpty]: Start isEmpty. Operand 834 states and 1200 transitions. [2022-02-24 00:30:12,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-02-24 00:30:12,747 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 00:30:12,747 INFO L514 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] [2022-02-24 00:30:12,747 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-02-24 00:30:12,747 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 00:30:12,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 00:30:12,748 INFO L85 PathProgramCache]: Analyzing trace with hash -1670644950, now seen corresponding path program 1 times [2022-02-24 00:30:12,748 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-24 00:30:12,748 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851725644] [2022-02-24 00:30:12,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 00:30:12,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 00:30:12,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:30:12,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 00:30:12,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:30:12,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 00:30:12,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:30:12,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-24 00:30:12,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:30:12,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 00:30:12,887 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-24 00:30:12,887 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851725644] [2022-02-24 00:30:12,888 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1851725644] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 00:30:12,888 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 00:30:12,888 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-02-24 00:30:12,888 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568314603] [2022-02-24 00:30:12,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 00:30:12,888 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-02-24 00:30:12,888 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-24 00:30:12,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-02-24 00:30:12,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-02-24 00:30:12,889 INFO L87 Difference]: Start difference. First operand 834 states and 1200 transitions. Second operand has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 4 states have internal predecessors, (26), 3 states have call successors, (10), 6 states have call predecessors, (10), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-02-24 00:30:14,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 00:30:14,951 INFO L93 Difference]: Finished difference Result 1417 states and 2024 transitions. [2022-02-24 00:30:14,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-02-24 00:30:14,952 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 4 states have internal predecessors, (26), 3 states have call successors, (10), 6 states have call predecessors, (10), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 39 [2022-02-24 00:30:14,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 00:30:14,956 INFO L225 Difference]: With dead ends: 1417 [2022-02-24 00:30:14,956 INFO L226 Difference]: Without dead ends: 999 [2022-02-24 00:30:14,957 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-02-24 00:30:14,958 INFO L933 BasicCegarLoop]: 821 mSDtfsCounter, 764 mSDsluCounter, 432 mSDsCounter, 0 mSdLazyCounter, 2153 mSolverCounterSat, 238 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 766 SdHoareTripleChecker+Valid, 1253 SdHoareTripleChecker+Invalid, 2391 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 238 IncrementalHoareTripleChecker+Valid, 2153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-02-24 00:30:14,958 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [766 Valid, 1253 Invalid, 2391 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [238 Valid, 2153 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-02-24 00:30:14,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 999 states. [2022-02-24 00:30:15,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 999 to 736. [2022-02-24 00:30:15,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 736 states, 571 states have (on average 1.3870402802101576) internal successors, (792), 575 states have internal predecessors, (792), 106 states have call successors, (106), 45 states have call predecessors, (106), 58 states have return successors, (131), 118 states have call predecessors, (131), 97 states have call successors, (131) [2022-02-24 00:30:15,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 736 states to 736 states and 1029 transitions. [2022-02-24 00:30:15,013 INFO L78 Accepts]: Start accepts. Automaton has 736 states and 1029 transitions. Word has length 39 [2022-02-24 00:30:15,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 00:30:15,013 INFO L470 AbstractCegarLoop]: Abstraction has 736 states and 1029 transitions. [2022-02-24 00:30:15,014 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 4 states have internal predecessors, (26), 3 states have call successors, (10), 6 states have call predecessors, (10), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-02-24 00:30:15,014 INFO L276 IsEmpty]: Start isEmpty. Operand 736 states and 1029 transitions. [2022-02-24 00:30:15,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-02-24 00:30:15,015 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 00:30:15,015 INFO L514 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] [2022-02-24 00:30:15,016 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-02-24 00:30:15,016 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 00:30:15,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 00:30:15,016 INFO L85 PathProgramCache]: Analyzing trace with hash -1528829481, now seen corresponding path program 1 times [2022-02-24 00:30:15,016 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-24 00:30:15,016 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667592021] [2022-02-24 00:30:15,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 00:30:15,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 00:30:15,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:30:15,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 00:30:15,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:30:15,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 00:30:15,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:30:15,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-24 00:30:15,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:30:15,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 00:30:15,150 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-24 00:30:15,150 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667592021] [2022-02-24 00:30:15,150 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1667592021] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 00:30:15,150 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 00:30:15,150 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-02-24 00:30:15,150 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960343270] [2022-02-24 00:30:15,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 00:30:15,151 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-02-24 00:30:15,151 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-24 00:30:15,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-02-24 00:30:15,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-02-24 00:30:15,151 INFO L87 Difference]: Start difference. First operand 736 states and 1029 transitions. Second operand has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 3 states have internal predecessors, (28), 3 states have call successors, (9), 6 states have call predecessors, (9), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-02-24 00:30:16,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 00:30:16,406 INFO L93 Difference]: Finished difference Result 979 states and 1409 transitions. [2022-02-24 00:30:16,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-02-24 00:30:16,407 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 3 states have internal predecessors, (28), 3 states have call successors, (9), 6 states have call predecessors, (9), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 40 [2022-02-24 00:30:16,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 00:30:16,411 INFO L225 Difference]: With dead ends: 979 [2022-02-24 00:30:16,411 INFO L226 Difference]: Without dead ends: 959 [2022-02-24 00:30:16,411 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-02-24 00:30:16,412 INFO L933 BasicCegarLoop]: 672 mSDtfsCounter, 1483 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 994 mSolverCounterSat, 390 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1491 SdHoareTripleChecker+Valid, 772 SdHoareTripleChecker+Invalid, 1384 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 390 IncrementalHoareTripleChecker+Valid, 994 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-02-24 00:30:16,412 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1491 Valid, 772 Invalid, 1384 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [390 Valid, 994 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-02-24 00:30:16,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 959 states. [2022-02-24 00:30:16,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 959 to 762. [2022-02-24 00:30:16,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 762 states, 595 states have (on average 1.3983193277310924) internal successors, (832), 608 states have internal predecessors, (832), 108 states have call successors, (108), 48 states have call predecessors, (108), 58 states have return successors, (124), 110 states have call predecessors, (124), 100 states have call successors, (124) [2022-02-24 00:30:16,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 762 states to 762 states and 1064 transitions. [2022-02-24 00:30:16,469 INFO L78 Accepts]: Start accepts. Automaton has 762 states and 1064 transitions. Word has length 40 [2022-02-24 00:30:16,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 00:30:16,469 INFO L470 AbstractCegarLoop]: Abstraction has 762 states and 1064 transitions. [2022-02-24 00:30:16,469 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 3 states have internal predecessors, (28), 3 states have call successors, (9), 6 states have call predecessors, (9), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-02-24 00:30:16,470 INFO L276 IsEmpty]: Start isEmpty. Operand 762 states and 1064 transitions. [2022-02-24 00:30:16,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-02-24 00:30:16,471 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 00:30:16,472 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 00:30:16,472 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-02-24 00:30:16,472 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 00:30:16,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 00:30:16,472 INFO L85 PathProgramCache]: Analyzing trace with hash 689414503, now seen corresponding path program 1 times [2022-02-24 00:30:16,472 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-24 00:30:16,473 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460886837] [2022-02-24 00:30:16,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 00:30:16,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 00:30:16,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:30:16,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 00:30:16,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:30:16,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 00:30:16,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:30:16,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-24 00:30:16,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:30:16,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-02-24 00:30:16,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:30:16,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 00:30:16,586 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-24 00:30:16,587 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460886837] [2022-02-24 00:30:16,587 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1460886837] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 00:30:16,587 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 00:30:16,587 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-02-24 00:30:16,587 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067759908] [2022-02-24 00:30:16,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 00:30:16,588 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-02-24 00:30:16,589 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-24 00:30:16,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-02-24 00:30:16,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-02-24 00:30:16,589 INFO L87 Difference]: Start difference. First operand 762 states and 1064 transitions. Second operand has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 3 states have internal predecessors, (32), 3 states have call successors, (10), 7 states have call predecessors, (10), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-02-24 00:30:18,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 00:30:18,342 INFO L93 Difference]: Finished difference Result 1167 states and 1671 transitions. [2022-02-24 00:30:18,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-02-24 00:30:18,343 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), 3 states have call successors, (10), 7 states have call predecessors, (10), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 46 [2022-02-24 00:30:18,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 00:30:18,347 INFO L225 Difference]: With dead ends: 1167 [2022-02-24 00:30:18,347 INFO L226 Difference]: Without dead ends: 942 [2022-02-24 00:30:18,348 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2022-02-24 00:30:18,349 INFO L933 BasicCegarLoop]: 791 mSDtfsCounter, 921 mSDsluCounter, 592 mSDsCounter, 0 mSdLazyCounter, 1706 mSolverCounterSat, 295 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 927 SdHoareTripleChecker+Valid, 1383 SdHoareTripleChecker+Invalid, 2001 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 295 IncrementalHoareTripleChecker+Valid, 1706 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-02-24 00:30:18,349 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [927 Valid, 1383 Invalid, 2001 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [295 Valid, 1706 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-02-24 00:30:18,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 942 states. [2022-02-24 00:30:18,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 942 to 762. [2022-02-24 00:30:18,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 762 states, 595 states have (on average 1.3966386554621848) internal successors, (831), 608 states have internal predecessors, (831), 108 states have call successors, (108), 48 states have call predecessors, (108), 58 states have return successors, (124), 110 states have call predecessors, (124), 100 states have call successors, (124) [2022-02-24 00:30:18,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 762 states to 762 states and 1063 transitions. [2022-02-24 00:30:18,419 INFO L78 Accepts]: Start accepts. Automaton has 762 states and 1063 transitions. Word has length 46 [2022-02-24 00:30:18,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 00:30:18,419 INFO L470 AbstractCegarLoop]: Abstraction has 762 states and 1063 transitions. [2022-02-24 00:30:18,419 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 3 states have internal predecessors, (32), 3 states have call successors, (10), 7 states have call predecessors, (10), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-02-24 00:30:18,419 INFO L276 IsEmpty]: Start isEmpty. Operand 762 states and 1063 transitions. [2022-02-24 00:30:18,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-24 00:30:18,422 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 00:30:18,422 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 00:30:18,422 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-02-24 00:30:18,423 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 00:30:18,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 00:30:18,423 INFO L85 PathProgramCache]: Analyzing trace with hash -735623654, now seen corresponding path program 1 times [2022-02-24 00:30:18,423 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-24 00:30:18,423 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272319638] [2022-02-24 00:30:18,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 00:30:18,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 00:30:18,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:30:18,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 00:30:18,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:30:18,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 00:30:18,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:30:18,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-24 00:30:18,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:30:18,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-02-24 00:30:18,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:30:18,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 00:30:18,573 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-24 00:30:18,573 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272319638] [2022-02-24 00:30:18,573 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1272319638] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 00:30:18,573 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 00:30:18,573 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-02-24 00:30:18,574 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035204184] [2022-02-24 00:30:18,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 00:30:18,574 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-02-24 00:30:18,574 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-24 00:30:18,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-02-24 00:30:18,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-02-24 00:30:18,575 INFO L87 Difference]: Start difference. First operand 762 states and 1063 transitions. Second operand has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 3 states have internal predecessors, (34), 3 states have call successors, (9), 7 states have call predecessors, (9), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-02-24 00:30:19,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 00:30:19,898 INFO L93 Difference]: Finished difference Result 964 states and 1383 transitions. [2022-02-24 00:30:19,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-02-24 00:30:19,899 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 3 states have internal predecessors, (34), 3 states have call successors, (9), 7 states have call predecessors, (9), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 47 [2022-02-24 00:30:19,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 00:30:19,902 INFO L225 Difference]: With dead ends: 964 [2022-02-24 00:30:19,902 INFO L226 Difference]: Without dead ends: 897 [2022-02-24 00:30:19,902 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=53, Unknown=0, NotChecked=0, Total=90 [2022-02-24 00:30:19,903 INFO L933 BasicCegarLoop]: 667 mSDtfsCounter, 1147 mSDsluCounter, 450 mSDsCounter, 0 mSdLazyCounter, 1167 mSolverCounterSat, 258 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1153 SdHoareTripleChecker+Valid, 1117 SdHoareTripleChecker+Invalid, 1425 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 258 IncrementalHoareTripleChecker+Valid, 1167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-02-24 00:30:19,903 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1153 Valid, 1117 Invalid, 1425 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [258 Valid, 1167 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-02-24 00:30:19,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 897 states. [2022-02-24 00:30:19,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 897 to 751. [2022-02-24 00:30:19,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 751 states, 588 states have (on average 1.3979591836734695) internal successors, (822), 601 states have internal predecessors, (822), 106 states have call successors, (106), 46 states have call predecessors, (106), 56 states have return successors, (122), 108 states have call predecessors, (122), 98 states have call successors, (122) [2022-02-24 00:30:19,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 751 states to 751 states and 1050 transitions. [2022-02-24 00:30:19,962 INFO L78 Accepts]: Start accepts. Automaton has 751 states and 1050 transitions. Word has length 47 [2022-02-24 00:30:19,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 00:30:19,962 INFO L470 AbstractCegarLoop]: Abstraction has 751 states and 1050 transitions. [2022-02-24 00:30:19,963 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 3 states have internal predecessors, (34), 3 states have call successors, (9), 7 states have call predecessors, (9), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-02-24 00:30:19,963 INFO L276 IsEmpty]: Start isEmpty. Operand 751 states and 1050 transitions. [2022-02-24 00:30:19,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-24 00:30:19,965 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 00:30:19,965 INFO L514 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] [2022-02-24 00:30:19,965 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-02-24 00:30:19,965 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 00:30:19,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 00:30:19,965 INFO L85 PathProgramCache]: Analyzing trace with hash -1452242056, now seen corresponding path program 1 times [2022-02-24 00:30:19,965 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-24 00:30:19,966 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090050450] [2022-02-24 00:30:19,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 00:30:19,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 00:30:19,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:30:20,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 00:30:20,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:30:20,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 00:30:20,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:30:20,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-24 00:30:20,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:30:20,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-02-24 00:30:20,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:30:20,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-02-24 00:30:20,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:30:20,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 00:30:20,142 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-24 00:30:20,142 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090050450] [2022-02-24 00:30:20,142 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1090050450] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 00:30:20,142 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 00:30:20,142 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-02-24 00:30:20,142 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845319400] [2022-02-24 00:30:20,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 00:30:20,143 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-02-24 00:30:20,143 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-24 00:30:20,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-02-24 00:30:20,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2022-02-24 00:30:20,144 INFO L87 Difference]: Start difference. First operand 751 states and 1050 transitions. Second operand has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 7 states have internal predecessors, (36), 4 states have call successors, (7), 6 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2022-02-24 00:30:22,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 00:30:22,672 INFO L93 Difference]: Finished difference Result 1067 states and 1515 transitions. [2022-02-24 00:30:22,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-02-24 00:30:22,673 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 7 states have internal predecessors, (36), 4 states have call successors, (7), 6 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) Word has length 48 [2022-02-24 00:30:22,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 00:30:22,677 INFO L225 Difference]: With dead ends: 1067 [2022-02-24 00:30:22,677 INFO L226 Difference]: Without dead ends: 1006 [2022-02-24 00:30:22,678 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=119, Invalid=343, Unknown=0, NotChecked=0, Total=462 [2022-02-24 00:30:22,679 INFO L933 BasicCegarLoop]: 754 mSDtfsCounter, 1817 mSDsluCounter, 987 mSDsCounter, 0 mSdLazyCounter, 3154 mSolverCounterSat, 587 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1845 SdHoareTripleChecker+Valid, 1741 SdHoareTripleChecker+Invalid, 3741 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 587 IncrementalHoareTripleChecker+Valid, 3154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-02-24 00:30:22,679 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1845 Valid, 1741 Invalid, 3741 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [587 Valid, 3154 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-02-24 00:30:22,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1006 states. [2022-02-24 00:30:22,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1006 to 794. [2022-02-24 00:30:22,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 794 states, 623 states have (on average 1.3964686998394864) internal successors, (870), 635 states have internal predecessors, (870), 110 states have call successors, (110), 49 states have call predecessors, (110), 60 states have return successors, (131), 114 states have call predecessors, (131), 102 states have call successors, (131) [2022-02-24 00:30:22,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 794 states to 794 states and 1111 transitions. [2022-02-24 00:30:22,758 INFO L78 Accepts]: Start accepts. Automaton has 794 states and 1111 transitions. Word has length 48 [2022-02-24 00:30:22,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 00:30:22,759 INFO L470 AbstractCegarLoop]: Abstraction has 794 states and 1111 transitions. [2022-02-24 00:30:22,759 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 7 states have internal predecessors, (36), 4 states have call successors, (7), 6 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2022-02-24 00:30:22,759 INFO L276 IsEmpty]: Start isEmpty. Operand 794 states and 1111 transitions. [2022-02-24 00:30:22,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-02-24 00:30:22,761 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 00:30:22,761 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 00:30:22,761 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-02-24 00:30:22,761 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 00:30:22,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 00:30:22,762 INFO L85 PathProgramCache]: Analyzing trace with hash -1568241764, now seen corresponding path program 1 times [2022-02-24 00:30:22,762 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-24 00:30:22,762 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140404526] [2022-02-24 00:30:22,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 00:30:22,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 00:30:22,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:30:22,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 00:30:22,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:30:22,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 00:30:22,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:30:22,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-24 00:30:22,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:30:22,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-02-24 00:30:22,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:30:22,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-02-24 00:30:22,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:30:22,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 00:30:22,945 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-24 00:30:22,945 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140404526] [2022-02-24 00:30:22,945 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [140404526] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 00:30:22,945 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 00:30:22,945 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-02-24 00:30:22,945 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133185080] [2022-02-24 00:30:22,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 00:30:22,946 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-02-24 00:30:22,946 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-24 00:30:22,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-02-24 00:30:22,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-02-24 00:30:22,947 INFO L87 Difference]: Start difference. First operand 794 states and 1111 transitions. Second operand has 10 states, 10 states have (on average 3.8) internal successors, (38), 6 states have internal predecessors, (38), 3 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2022-02-24 00:30:24,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 00:30:24,709 INFO L93 Difference]: Finished difference Result 952 states and 1368 transitions. [2022-02-24 00:30:24,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-02-24 00:30:24,709 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.8) internal successors, (38), 6 states have internal predecessors, (38), 3 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) Word has length 50 [2022-02-24 00:30:24,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 00:30:24,712 INFO L225 Difference]: With dead ends: 952 [2022-02-24 00:30:24,712 INFO L226 Difference]: Without dead ends: 924 [2022-02-24 00:30:24,712 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2022-02-24 00:30:24,712 INFO L933 BasicCegarLoop]: 652 mSDtfsCounter, 2169 mSDsluCounter, 772 mSDsCounter, 0 mSdLazyCounter, 1377 mSolverCounterSat, 650 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2180 SdHoareTripleChecker+Valid, 1424 SdHoareTripleChecker+Invalid, 2027 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 650 IncrementalHoareTripleChecker+Valid, 1377 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-02-24 00:30:24,713 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2180 Valid, 1424 Invalid, 2027 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [650 Valid, 1377 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-02-24 00:30:24,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 924 states. [2022-02-24 00:30:24,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 924 to 797. [2022-02-24 00:30:24,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 797 states, 626 states have (on average 1.3961661341853036) internal successors, (874), 638 states have internal predecessors, (874), 110 states have call successors, (110), 49 states have call predecessors, (110), 60 states have return successors, (131), 114 states have call predecessors, (131), 102 states have call successors, (131) [2022-02-24 00:30:24,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 797 states to 797 states and 1115 transitions. [2022-02-24 00:30:24,781 INFO L78 Accepts]: Start accepts. Automaton has 797 states and 1115 transitions. Word has length 50 [2022-02-24 00:30:24,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 00:30:24,782 INFO L470 AbstractCegarLoop]: Abstraction has 797 states and 1115 transitions. [2022-02-24 00:30:24,782 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.8) internal successors, (38), 6 states have internal predecessors, (38), 3 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2022-02-24 00:30:24,782 INFO L276 IsEmpty]: Start isEmpty. Operand 797 states and 1115 transitions. [2022-02-24 00:30:24,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-02-24 00:30:24,784 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 00:30:24,784 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 00:30:24,784 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-02-24 00:30:24,784 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 00:30:24,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 00:30:24,785 INFO L85 PathProgramCache]: Analyzing trace with hash 1729653179, now seen corresponding path program 1 times [2022-02-24 00:30:24,785 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-24 00:30:24,785 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880634117] [2022-02-24 00:30:24,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 00:30:24,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 00:30:24,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:30:24,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 00:30:24,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:30:24,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 00:30:24,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:30:24,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-24 00:30:24,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:30:24,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-02-24 00:30:24,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:30:24,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-02-24 00:30:24,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:30:24,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 00:30:24,949 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-24 00:30:24,949 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880634117] [2022-02-24 00:30:24,949 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1880634117] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 00:30:24,949 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 00:30:24,949 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-02-24 00:30:24,949 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321906172] [2022-02-24 00:30:24,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 00:30:24,949 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-02-24 00:30:24,950 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-24 00:30:24,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-02-24 00:30:24,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2022-02-24 00:30:24,950 INFO L87 Difference]: Start difference. First operand 797 states and 1115 transitions. Second operand has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 8 states have internal predecessors, (38), 4 states have call successors, (7), 6 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2022-02-24 00:30:26,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 00:30:26,767 INFO L93 Difference]: Finished difference Result 978 states and 1402 transitions. [2022-02-24 00:30:26,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-02-24 00:30:26,768 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 8 states have internal predecessors, (38), 4 states have call successors, (7), 6 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) Word has length 50 [2022-02-24 00:30:26,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 00:30:26,771 INFO L225 Difference]: With dead ends: 978 [2022-02-24 00:30:26,771 INFO L226 Difference]: Without dead ends: 914 [2022-02-24 00:30:26,771 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2022-02-24 00:30:26,772 INFO L933 BasicCegarLoop]: 652 mSDtfsCounter, 2233 mSDsluCounter, 855 mSDsCounter, 0 mSdLazyCounter, 2119 mSolverCounterSat, 668 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2242 SdHoareTripleChecker+Valid, 1507 SdHoareTripleChecker+Invalid, 2787 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 668 IncrementalHoareTripleChecker+Valid, 2119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-02-24 00:30:26,772 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2242 Valid, 1507 Invalid, 2787 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [668 Valid, 2119 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-02-24 00:30:26,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 914 states. [2022-02-24 00:30:26,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 914 to 792. [2022-02-24 00:30:26,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 792 states, 621 states have (on average 1.391304347826087) internal successors, (864), 633 states have internal predecessors, (864), 110 states have call successors, (110), 49 states have call predecessors, (110), 60 states have return successors, (131), 114 states have call predecessors, (131), 102 states have call successors, (131) [2022-02-24 00:30:26,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 792 states to 792 states and 1105 transitions. [2022-02-24 00:30:26,843 INFO L78 Accepts]: Start accepts. Automaton has 792 states and 1105 transitions. Word has length 50 [2022-02-24 00:30:26,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 00:30:26,843 INFO L470 AbstractCegarLoop]: Abstraction has 792 states and 1105 transitions. [2022-02-24 00:30:26,843 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 8 states have internal predecessors, (38), 4 states have call successors, (7), 6 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2022-02-24 00:30:26,843 INFO L276 IsEmpty]: Start isEmpty. Operand 792 states and 1105 transitions. [2022-02-24 00:30:26,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-02-24 00:30:26,845 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 00:30:26,846 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 00:30:26,846 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-02-24 00:30:26,846 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 00:30:26,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 00:30:26,846 INFO L85 PathProgramCache]: Analyzing trace with hash -111891045, now seen corresponding path program 1 times [2022-02-24 00:30:26,846 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-24 00:30:26,846 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304239834] [2022-02-24 00:30:26,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 00:30:26,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 00:30:26,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:30:26,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 00:30:26,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:30:26,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 00:30:26,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:30:26,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-24 00:30:26,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:30:26,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-02-24 00:30:26,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:30:26,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-02-24 00:30:26,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:30:26,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 00:30:26,979 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-24 00:30:26,979 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304239834] [2022-02-24 00:30:26,980 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1304239834] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 00:30:26,980 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 00:30:26,980 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-02-24 00:30:26,980 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511354872] [2022-02-24 00:30:26,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 00:30:26,980 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-02-24 00:30:26,980 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-24 00:30:26,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-02-24 00:30:26,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-02-24 00:30:26,981 INFO L87 Difference]: Start difference. First operand 792 states and 1105 transitions. Second operand has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (7), 6 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2022-02-24 00:30:28,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 00:30:28,588 INFO L93 Difference]: Finished difference Result 1090 states and 1555 transitions. [2022-02-24 00:30:28,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-02-24 00:30:28,588 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (7), 6 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 50 [2022-02-24 00:30:28,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 00:30:28,593 INFO L225 Difference]: With dead ends: 1090 [2022-02-24 00:30:28,594 INFO L226 Difference]: Without dead ends: 1074 [2022-02-24 00:30:28,594 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-02-24 00:30:28,595 INFO L933 BasicCegarLoop]: 783 mSDtfsCounter, 1242 mSDsluCounter, 549 mSDsCounter, 0 mSdLazyCounter, 1310 mSolverCounterSat, 444 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1245 SdHoareTripleChecker+Valid, 1332 SdHoareTripleChecker+Invalid, 1754 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 444 IncrementalHoareTripleChecker+Valid, 1310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-02-24 00:30:28,595 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1245 Valid, 1332 Invalid, 1754 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [444 Valid, 1310 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-02-24 00:30:28,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1074 states. [2022-02-24 00:30:28,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1074 to 848. [2022-02-24 00:30:28,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 848 states, 663 states have (on average 1.3725490196078431) internal successors, (910), 677 states have internal predecessors, (910), 112 states have call successors, (112), 51 states have call predecessors, (112), 72 states have return successors, (143), 126 states have call predecessors, (143), 104 states have call successors, (143) [2022-02-24 00:30:28,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 848 states to 848 states and 1165 transitions. [2022-02-24 00:30:28,693 INFO L78 Accepts]: Start accepts. Automaton has 848 states and 1165 transitions. Word has length 50 [2022-02-24 00:30:28,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 00:30:28,693 INFO L470 AbstractCegarLoop]: Abstraction has 848 states and 1165 transitions. [2022-02-24 00:30:28,693 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (7), 6 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2022-02-24 00:30:28,693 INFO L276 IsEmpty]: Start isEmpty. Operand 848 states and 1165 transitions. [2022-02-24 00:30:28,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-02-24 00:30:28,695 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 00:30:28,695 INFO L514 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] [2022-02-24 00:30:28,695 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-02-24 00:30:28,696 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 00:30:28,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 00:30:28,696 INFO L85 PathProgramCache]: Analyzing trace with hash 1040673977, now seen corresponding path program 1 times [2022-02-24 00:30:28,696 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-24 00:30:28,696 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224419642] [2022-02-24 00:30:28,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 00:30:28,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 00:30:28,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:30:28,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 00:30:28,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:30:28,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 00:30:28,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:30:28,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-24 00:30:28,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:30:28,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-02-24 00:30:28,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:30:28,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-02-24 00:30:28,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:30:28,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 00:30:28,825 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-24 00:30:28,825 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224419642] [2022-02-24 00:30:28,825 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1224419642] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 00:30:28,825 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 00:30:28,825 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-02-24 00:30:28,825 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543748472] [2022-02-24 00:30:28,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 00:30:28,826 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-24 00:30:28,826 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-24 00:30:28,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-24 00:30:28,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-02-24 00:30:28,826 INFO L87 Difference]: Start difference. First operand 848 states and 1165 transitions. Second operand has 8 states, 8 states have (on average 4.875) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (10), 7 states have call predecessors, (10), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2022-02-24 00:30:30,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 00:30:30,075 INFO L93 Difference]: Finished difference Result 1183 states and 1669 transitions. [2022-02-24 00:30:30,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-02-24 00:30:30,079 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (10), 7 states have call predecessors, (10), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) Word has length 54 [2022-02-24 00:30:30,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 00:30:30,083 INFO L225 Difference]: With dead ends: 1183 [2022-02-24 00:30:30,083 INFO L226 Difference]: Without dead ends: 937 [2022-02-24 00:30:30,085 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=67, Unknown=0, NotChecked=0, Total=110 [2022-02-24 00:30:30,087 INFO L933 BasicCegarLoop]: 641 mSDtfsCounter, 1064 mSDsluCounter, 512 mSDsCounter, 0 mSdLazyCounter, 1004 mSolverCounterSat, 365 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1097 SdHoareTripleChecker+Valid, 1153 SdHoareTripleChecker+Invalid, 1369 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 365 IncrementalHoareTripleChecker+Valid, 1004 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-02-24 00:30:30,088 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1097 Valid, 1153 Invalid, 1369 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [365 Valid, 1004 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-02-24 00:30:30,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 937 states. [2022-02-24 00:30:30,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 937 to 817. [2022-02-24 00:30:30,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 817 states, 639 states have (on average 1.3724569640062598) internal successors, (877), 651 states have internal predecessors, (877), 110 states have call successors, (110), 50 states have call predecessors, (110), 67 states have return successors, (138), 121 states have call predecessors, (138), 103 states have call successors, (138) [2022-02-24 00:30:30,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 817 states to 817 states and 1125 transitions. [2022-02-24 00:30:30,161 INFO L78 Accepts]: Start accepts. Automaton has 817 states and 1125 transitions. Word has length 54 [2022-02-24 00:30:30,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 00:30:30,161 INFO L470 AbstractCegarLoop]: Abstraction has 817 states and 1125 transitions. [2022-02-24 00:30:30,161 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (10), 7 states have call predecessors, (10), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2022-02-24 00:30:30,162 INFO L276 IsEmpty]: Start isEmpty. Operand 817 states and 1125 transitions. [2022-02-24 00:30:30,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-02-24 00:30:30,164 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 00:30:30,164 INFO L514 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] [2022-02-24 00:30:30,164 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-02-24 00:30:30,164 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 00:30:30,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 00:30:30,164 INFO L85 PathProgramCache]: Analyzing trace with hash -1255093406, now seen corresponding path program 1 times [2022-02-24 00:30:30,164 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-24 00:30:30,165 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000659692] [2022-02-24 00:30:30,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 00:30:30,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 00:30:30,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:30:30,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 00:30:30,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:30:30,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 00:30:30,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:30:30,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-24 00:30:30,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:30:30,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-02-24 00:30:30,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:30:30,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-02-24 00:30:30,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:30:30,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 00:30:30,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:30:30,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 00:30:30,348 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-24 00:30:30,348 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000659692] [2022-02-24 00:30:30,348 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2000659692] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 00:30:30,348 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 00:30:30,348 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-02-24 00:30:30,348 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318262092] [2022-02-24 00:30:30,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 00:30:30,348 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-02-24 00:30:30,349 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-24 00:30:30,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-02-24 00:30:30,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2022-02-24 00:30:30,349 INFO L87 Difference]: Start difference. First operand 817 states and 1125 transitions. Second operand has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (8), 8 states have call predecessors, (8), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2022-02-24 00:30:32,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 00:30:32,142 INFO L93 Difference]: Finished difference Result 965 states and 1370 transitions. [2022-02-24 00:30:32,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-02-24 00:30:32,142 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (8), 8 states have call predecessors, (8), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) Word has length 52 [2022-02-24 00:30:32,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 00:30:32,147 INFO L225 Difference]: With dead ends: 965 [2022-02-24 00:30:32,147 INFO L226 Difference]: Without dead ends: 960 [2022-02-24 00:30:32,148 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2022-02-24 00:30:32,148 INFO L933 BasicCegarLoop]: 694 mSDtfsCounter, 493 mSDsluCounter, 556 mSDsCounter, 0 mSdLazyCounter, 2064 mSolverCounterSat, 151 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 496 SdHoareTripleChecker+Valid, 1250 SdHoareTripleChecker+Invalid, 2215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 151 IncrementalHoareTripleChecker+Valid, 2064 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-02-24 00:30:32,148 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [496 Valid, 1250 Invalid, 2215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [151 Valid, 2064 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-02-24 00:30:32,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 960 states. [2022-02-24 00:30:32,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 960 to 836. [2022-02-24 00:30:32,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 836 states, 655 states have (on average 1.369465648854962) internal successors, (897), 668 states have internal predecessors, (897), 111 states have call successors, (111), 51 states have call predecessors, (111), 69 states have return successors, (140), 123 states have call predecessors, (140), 104 states have call successors, (140) [2022-02-24 00:30:32,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 836 states to 836 states and 1148 transitions. [2022-02-24 00:30:32,225 INFO L78 Accepts]: Start accepts. Automaton has 836 states and 1148 transitions. Word has length 52 [2022-02-24 00:30:32,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 00:30:32,225 INFO L470 AbstractCegarLoop]: Abstraction has 836 states and 1148 transitions. [2022-02-24 00:30:32,225 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (8), 8 states have call predecessors, (8), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2022-02-24 00:30:32,226 INFO L276 IsEmpty]: Start isEmpty. Operand 836 states and 1148 transitions. [2022-02-24 00:30:32,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-02-24 00:30:32,228 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 00:30:32,228 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 00:30:32,228 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-02-24 00:30:32,228 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 00:30:32,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 00:30:32,228 INFO L85 PathProgramCache]: Analyzing trace with hash 856883353, now seen corresponding path program 1 times [2022-02-24 00:30:32,228 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-24 00:30:32,229 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898133535] [2022-02-24 00:30:32,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 00:30:32,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 00:30:32,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:30:32,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 00:30:32,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:30:32,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 00:30:32,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:30:32,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-24 00:30:32,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:30:32,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-02-24 00:30:32,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:30:32,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-02-24 00:30:32,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:30:32,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 00:30:32,412 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-24 00:30:32,412 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898133535] [2022-02-24 00:30:32,412 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1898133535] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 00:30:32,412 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 00:30:32,412 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-02-24 00:30:32,412 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400711545] [2022-02-24 00:30:32,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 00:30:32,412 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-02-24 00:30:32,412 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-24 00:30:32,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-02-24 00:30:32,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2022-02-24 00:30:32,413 INFO L87 Difference]: Start difference. First operand 836 states and 1148 transitions. Second operand has 12 states, 12 states have (on average 3.25) internal successors, (39), 6 states have internal predecessors, (39), 2 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2022-02-24 00:30:34,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 00:30:34,646 INFO L93 Difference]: Finished difference Result 981 states and 1388 transitions. [2022-02-24 00:30:34,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-02-24 00:30:34,647 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.25) internal successors, (39), 6 states have internal predecessors, (39), 2 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) Word has length 51 [2022-02-24 00:30:34,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 00:30:34,650 INFO L225 Difference]: With dead ends: 981 [2022-02-24 00:30:34,650 INFO L226 Difference]: Without dead ends: 977 [2022-02-24 00:30:34,651 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2022-02-24 00:30:34,651 INFO L933 BasicCegarLoop]: 707 mSDtfsCounter, 724 mSDsluCounter, 1744 mSDsCounter, 0 mSdLazyCounter, 3853 mSolverCounterSat, 277 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 726 SdHoareTripleChecker+Valid, 2451 SdHoareTripleChecker+Invalid, 4130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 277 IncrementalHoareTripleChecker+Valid, 3853 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-02-24 00:30:34,651 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [726 Valid, 2451 Invalid, 4130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [277 Valid, 3853 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-02-24 00:30:34,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 977 states. [2022-02-24 00:30:34,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 977 to 855. [2022-02-24 00:30:34,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 855 states, 671 states have (on average 1.3621460506706409) internal successors, (914), 685 states have internal predecessors, (914), 112 states have call successors, (112), 51 states have call predecessors, (112), 71 states have return successors, (143), 126 states have call predecessors, (143), 105 states have call successors, (143) [2022-02-24 00:30:34,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 855 states to 855 states and 1169 transitions. [2022-02-24 00:30:34,731 INFO L78 Accepts]: Start accepts. Automaton has 855 states and 1169 transitions. Word has length 51 [2022-02-24 00:30:34,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 00:30:34,731 INFO L470 AbstractCegarLoop]: Abstraction has 855 states and 1169 transitions. [2022-02-24 00:30:34,731 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.25) internal successors, (39), 6 states have internal predecessors, (39), 2 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2022-02-24 00:30:34,731 INFO L276 IsEmpty]: Start isEmpty. Operand 855 states and 1169 transitions. [2022-02-24 00:30:34,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-02-24 00:30:34,733 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 00:30:34,733 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 00:30:34,734 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-02-24 00:30:34,734 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 00:30:34,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 00:30:34,734 INFO L85 PathProgramCache]: Analyzing trace with hash 856915097, now seen corresponding path program 1 times [2022-02-24 00:30:34,734 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-24 00:30:34,734 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449148265] [2022-02-24 00:30:34,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 00:30:34,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 00:30:34,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:30:34,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 00:30:34,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:30:34,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 00:30:34,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:30:34,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-24 00:30:34,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:30:34,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-02-24 00:30:34,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:30:34,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-02-24 00:30:34,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:30:34,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 00:30:34,892 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-24 00:30:34,892 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449148265] [2022-02-24 00:30:34,892 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1449148265] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 00:30:34,892 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 00:30:34,892 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-02-24 00:30:34,892 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290531727] [2022-02-24 00:30:34,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 00:30:34,893 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-02-24 00:30:34,893 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-24 00:30:34,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-02-24 00:30:34,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2022-02-24 00:30:34,893 INFO L87 Difference]: Start difference. First operand 855 states and 1169 transitions. Second operand has 12 states, 12 states have (on average 3.25) internal successors, (39), 6 states have internal predecessors, (39), 2 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2022-02-24 00:30:37,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 00:30:37,005 INFO L93 Difference]: Finished difference Result 990 states and 1399 transitions. [2022-02-24 00:30:37,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-02-24 00:30:37,005 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.25) internal successors, (39), 6 states have internal predecessors, (39), 2 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) Word has length 51 [2022-02-24 00:30:37,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 00:30:37,009 INFO L225 Difference]: With dead ends: 990 [2022-02-24 00:30:37,009 INFO L226 Difference]: Without dead ends: 966 [2022-02-24 00:30:37,010 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2022-02-24 00:30:37,011 INFO L933 BasicCegarLoop]: 706 mSDtfsCounter, 1084 mSDsluCounter, 1673 mSDsCounter, 0 mSdLazyCounter, 3912 mSolverCounterSat, 416 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1086 SdHoareTripleChecker+Valid, 2379 SdHoareTripleChecker+Invalid, 4328 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 416 IncrementalHoareTripleChecker+Valid, 3912 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-02-24 00:30:37,011 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1086 Valid, 2379 Invalid, 4328 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [416 Valid, 3912 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-02-24 00:30:37,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 966 states. [2022-02-24 00:30:37,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 966 to 842. [2022-02-24 00:30:37,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 842 states, 660 states have (on average 1.3666666666666667) internal successors, (902), 674 states have internal predecessors, (902), 112 states have call successors, (112), 51 states have call predecessors, (112), 69 states have return successors, (141), 124 states have call predecessors, (141), 105 states have call successors, (141) [2022-02-24 00:30:37,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 842 states to 842 states and 1155 transitions. [2022-02-24 00:30:37,105 INFO L78 Accepts]: Start accepts. Automaton has 842 states and 1155 transitions. Word has length 51 [2022-02-24 00:30:37,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 00:30:37,105 INFO L470 AbstractCegarLoop]: Abstraction has 842 states and 1155 transitions. [2022-02-24 00:30:37,105 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.25) internal successors, (39), 6 states have internal predecessors, (39), 2 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2022-02-24 00:30:37,105 INFO L276 IsEmpty]: Start isEmpty. Operand 842 states and 1155 transitions. [2022-02-24 00:30:37,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-02-24 00:30:37,107 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 00:30:37,107 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 00:30:37,108 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-02-24 00:30:37,108 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 00:30:37,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 00:30:37,108 INFO L85 PathProgramCache]: Analyzing trace with hash -222651470, now seen corresponding path program 1 times [2022-02-24 00:30:37,108 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-24 00:30:37,108 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771742992] [2022-02-24 00:30:37,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 00:30:37,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 00:30:37,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:30:37,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 00:30:37,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:30:37,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 00:30:37,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:30:37,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-24 00:30:37,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:30:37,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-02-24 00:30:37,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:30:37,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-02-24 00:30:37,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:30:37,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 00:30:37,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:30:37,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 00:30:37,358 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-24 00:30:37,358 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771742992] [2022-02-24 00:30:37,358 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1771742992] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 00:30:37,358 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 00:30:37,359 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-02-24 00:30:37,359 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139627677] [2022-02-24 00:30:37,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 00:30:37,360 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-02-24 00:30:37,360 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-24 00:30:37,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-02-24 00:30:37,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2022-02-24 00:30:37,361 INFO L87 Difference]: Start difference. First operand 842 states and 1155 transitions. Second operand has 13 states, 13 states have (on average 3.0) internal successors, (39), 7 states have internal predecessors, (39), 3 states have call successors, (8), 8 states have call predecessors, (8), 4 states have return successors, (6), 5 states have call predecessors, (6), 2 states have call successors, (6) [2022-02-24 00:30:40,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 00:30:40,007 INFO L93 Difference]: Finished difference Result 974 states and 1378 transitions. [2022-02-24 00:30:40,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-02-24 00:30:40,008 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 7 states have internal predecessors, (39), 3 states have call successors, (8), 8 states have call predecessors, (8), 4 states have return successors, (6), 5 states have call predecessors, (6), 2 states have call successors, (6) Word has length 53 [2022-02-24 00:30:40,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 00:30:40,011 INFO L225 Difference]: With dead ends: 974 [2022-02-24 00:30:40,012 INFO L226 Difference]: Without dead ends: 968 [2022-02-24 00:30:40,012 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=106, Invalid=274, Unknown=0, NotChecked=0, Total=380 [2022-02-24 00:30:40,013 INFO L933 BasicCegarLoop]: 659 mSDtfsCounter, 1254 mSDsluCounter, 1013 mSDsCounter, 0 mSdLazyCounter, 3454 mSolverCounterSat, 381 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1280 SdHoareTripleChecker+Valid, 1672 SdHoareTripleChecker+Invalid, 3835 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 381 IncrementalHoareTripleChecker+Valid, 3454 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-02-24 00:30:40,013 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1280 Valid, 1672 Invalid, 3835 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [381 Valid, 3454 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-02-24 00:30:40,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 968 states. [2022-02-24 00:30:40,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 968 to 842. [2022-02-24 00:30:40,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 842 states, 660 states have (on average 1.3651515151515152) internal successors, (901), 674 states have internal predecessors, (901), 112 states have call successors, (112), 51 states have call predecessors, (112), 69 states have return successors, (141), 124 states have call predecessors, (141), 105 states have call successors, (141) [2022-02-24 00:30:40,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 842 states to 842 states and 1154 transitions. [2022-02-24 00:30:40,116 INFO L78 Accepts]: Start accepts. Automaton has 842 states and 1154 transitions. Word has length 53 [2022-02-24 00:30:40,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 00:30:40,116 INFO L470 AbstractCegarLoop]: Abstraction has 842 states and 1154 transitions. [2022-02-24 00:30:40,116 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 7 states have internal predecessors, (39), 3 states have call successors, (8), 8 states have call predecessors, (8), 4 states have return successors, (6), 5 states have call predecessors, (6), 2 states have call successors, (6) [2022-02-24 00:30:40,116 INFO L276 IsEmpty]: Start isEmpty. Operand 842 states and 1154 transitions. [2022-02-24 00:30:40,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-02-24 00:30:40,120 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 00:30:40,120 INFO L514 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] [2022-02-24 00:30:40,120 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-02-24 00:30:40,120 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 00:30:40,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 00:30:40,121 INFO L85 PathProgramCache]: Analyzing trace with hash 179775437, now seen corresponding path program 1 times [2022-02-24 00:30:40,121 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-24 00:30:40,121 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614399675] [2022-02-24 00:30:40,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 00:30:40,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 00:30:40,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:30:40,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 00:30:40,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:30:40,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 00:30:40,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:30:40,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-24 00:30:40,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:30:40,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-02-24 00:30:40,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:30:40,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-02-24 00:30:40,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:30:40,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 00:30:40,295 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-24 00:30:40,295 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614399675] [2022-02-24 00:30:40,295 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1614399675] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 00:30:40,295 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 00:30:40,295 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-02-24 00:30:40,295 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345867152] [2022-02-24 00:30:40,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 00:30:40,296 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-02-24 00:30:40,296 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-24 00:30:40,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-02-24 00:30:40,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-02-24 00:30:40,296 INFO L87 Difference]: Start difference. First operand 842 states and 1154 transitions. Second operand has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 5 states have internal predecessors, (40), 3 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2022-02-24 00:30:42,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 00:30:42,176 INFO L93 Difference]: Finished difference Result 979 states and 1383 transitions. [2022-02-24 00:30:42,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-02-24 00:30:42,186 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 5 states have internal predecessors, (40), 3 states have call successors, (7), 6 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 52 [2022-02-24 00:30:42,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 00:30:42,190 INFO L225 Difference]: With dead ends: 979 [2022-02-24 00:30:42,190 INFO L226 Difference]: Without dead ends: 943 [2022-02-24 00:30:42,191 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=86, Invalid=186, Unknown=0, NotChecked=0, Total=272 [2022-02-24 00:30:42,191 INFO L933 BasicCegarLoop]: 659 mSDtfsCounter, 1580 mSDsluCounter, 628 mSDsCounter, 0 mSdLazyCounter, 1888 mSolverCounterSat, 454 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1595 SdHoareTripleChecker+Valid, 1287 SdHoareTripleChecker+Invalid, 2342 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 454 IncrementalHoareTripleChecker+Valid, 1888 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-02-24 00:30:42,191 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1595 Valid, 1287 Invalid, 2342 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [454 Valid, 1888 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-02-24 00:30:42,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 943 states. [2022-02-24 00:30:42,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 943 to 815. [2022-02-24 00:30:42,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 815 states, 638 states have (on average 1.3746081504702194) internal successors, (877), 651 states have internal predecessors, (877), 109 states have call successors, (109), 49 states have call predecessors, (109), 67 states have return successors, (138), 121 states have call predecessors, (138), 102 states have call successors, (138) [2022-02-24 00:30:42,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 815 states to 815 states and 1124 transitions. [2022-02-24 00:30:42,274 INFO L78 Accepts]: Start accepts. Automaton has 815 states and 1124 transitions. Word has length 52 [2022-02-24 00:30:42,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 00:30:42,275 INFO L470 AbstractCegarLoop]: Abstraction has 815 states and 1124 transitions. [2022-02-24 00:30:42,275 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 5 states have internal predecessors, (40), 3 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2022-02-24 00:30:42,275 INFO L276 IsEmpty]: Start isEmpty. Operand 815 states and 1124 transitions. [2022-02-24 00:30:42,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-02-24 00:30:42,277 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 00:30:42,277 INFO L514 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] [2022-02-24 00:30:42,277 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-02-24 00:30:42,277 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 00:30:42,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 00:30:42,277 INFO L85 PathProgramCache]: Analyzing trace with hash 760121073, now seen corresponding path program 1 times [2022-02-24 00:30:42,278 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-24 00:30:42,278 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637601140] [2022-02-24 00:30:42,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 00:30:42,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 00:30:42,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:30:42,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 00:30:42,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:30:42,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 00:30:42,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:30:42,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-24 00:30:42,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:30:42,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-02-24 00:30:42,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:30:42,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-02-24 00:30:42,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:30:42,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 00:30:42,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:30:42,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 00:30:42,527 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-24 00:30:42,528 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637601140] [2022-02-24 00:30:42,528 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1637601140] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 00:30:42,528 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 00:30:42,528 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-02-24 00:30:42,528 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111422096] [2022-02-24 00:30:42,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 00:30:42,528 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-02-24 00:30:42,528 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-24 00:30:42,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-02-24 00:30:42,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2022-02-24 00:30:42,529 INFO L87 Difference]: Start difference. First operand 815 states and 1124 transitions. Second operand has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 7 states have internal predecessors, (40), 3 states have call successors, (8), 8 states have call predecessors, (8), 4 states have return successors, (6), 5 states have call predecessors, (6), 2 states have call successors, (6) [2022-02-24 00:30:44,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 00:30:44,934 INFO L93 Difference]: Finished difference Result 945 states and 1345 transitions. [2022-02-24 00:30:44,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-02-24 00:30:44,935 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 7 states have internal predecessors, (40), 3 states have call successors, (8), 8 states have call predecessors, (8), 4 states have return successors, (6), 5 states have call predecessors, (6), 2 states have call successors, (6) Word has length 54 [2022-02-24 00:30:44,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 00:30:44,937 INFO L225 Difference]: With dead ends: 945 [2022-02-24 00:30:44,937 INFO L226 Difference]: Without dead ends: 939 [2022-02-24 00:30:44,938 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=106, Invalid=274, Unknown=0, NotChecked=0, Total=380 [2022-02-24 00:30:44,938 INFO L933 BasicCegarLoop]: 630 mSDtfsCounter, 1895 mSDsluCounter, 774 mSDsCounter, 0 mSdLazyCounter, 3117 mSolverCounterSat, 650 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1921 SdHoareTripleChecker+Valid, 1404 SdHoareTripleChecker+Invalid, 3767 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 650 IncrementalHoareTripleChecker+Valid, 3117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-02-24 00:30:44,939 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1921 Valid, 1404 Invalid, 3767 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [650 Valid, 3117 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-02-24 00:30:44,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 939 states. [2022-02-24 00:30:45,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 939 to 815. [2022-02-24 00:30:45,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 815 states, 638 states have (on average 1.3730407523510972) internal successors, (876), 651 states have internal predecessors, (876), 109 states have call successors, (109), 49 states have call predecessors, (109), 67 states have return successors, (138), 121 states have call predecessors, (138), 102 states have call successors, (138) [2022-02-24 00:30:45,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 815 states to 815 states and 1123 transitions. [2022-02-24 00:30:45,020 INFO L78 Accepts]: Start accepts. Automaton has 815 states and 1123 transitions. Word has length 54 [2022-02-24 00:30:45,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 00:30:45,020 INFO L470 AbstractCegarLoop]: Abstraction has 815 states and 1123 transitions. [2022-02-24 00:30:45,020 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 7 states have internal predecessors, (40), 3 states have call successors, (8), 8 states have call predecessors, (8), 4 states have return successors, (6), 5 states have call predecessors, (6), 2 states have call successors, (6) [2022-02-24 00:30:45,020 INFO L276 IsEmpty]: Start isEmpty. Operand 815 states and 1123 transitions. [2022-02-24 00:30:45,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-02-24 00:30:45,022 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 00:30:45,022 INFO L514 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] [2022-02-24 00:30:45,023 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-02-24 00:30:45,023 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 00:30:45,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 00:30:45,023 INFO L85 PathProgramCache]: Analyzing trace with hash 1504848646, now seen corresponding path program 1 times [2022-02-24 00:30:45,023 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-24 00:30:45,023 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33585595] [2022-02-24 00:30:45,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 00:30:45,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 00:30:45,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:30:45,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 00:30:45,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:30:45,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 00:30:45,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:30:45,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-24 00:30:45,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:30:45,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-02-24 00:30:45,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:30:45,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-02-24 00:30:45,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:30:45,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 00:30:45,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:30:45,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 00:30:45,241 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-24 00:30:45,241 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33585595] [2022-02-24 00:30:45,241 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [33585595] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 00:30:45,242 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 00:30:45,242 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-02-24 00:30:45,242 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048330167] [2022-02-24 00:30:45,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 00:30:45,242 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-02-24 00:30:45,242 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-24 00:30:45,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-02-24 00:30:45,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2022-02-24 00:30:45,243 INFO L87 Difference]: Start difference. First operand 815 states and 1123 transitions. Second operand has 15 states, 15 states have (on average 2.7333333333333334) internal successors, (41), 7 states have internal predecessors, (41), 3 states have call successors, (8), 8 states have call predecessors, (8), 3 states have return successors, (6), 4 states have call predecessors, (6), 2 states have call successors, (6) [2022-02-24 00:30:47,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 00:30:47,710 INFO L93 Difference]: Finished difference Result 966 states and 1372 transitions. [2022-02-24 00:30:47,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-02-24 00:30:47,712 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.7333333333333334) internal successors, (41), 7 states have internal predecessors, (41), 3 states have call successors, (8), 8 states have call predecessors, (8), 3 states have return successors, (6), 4 states have call predecessors, (6), 2 states have call successors, (6) Word has length 55 [2022-02-24 00:30:47,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 00:30:47,715 INFO L225 Difference]: With dead ends: 966 [2022-02-24 00:30:47,715 INFO L226 Difference]: Without dead ends: 926 [2022-02-24 00:30:47,716 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=62, Invalid=280, Unknown=0, NotChecked=0, Total=342 [2022-02-24 00:30:47,716 INFO L933 BasicCegarLoop]: 678 mSDtfsCounter, 1069 mSDsluCounter, 1798 mSDsCounter, 0 mSdLazyCounter, 4451 mSolverCounterSat, 436 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1072 SdHoareTripleChecker+Valid, 2476 SdHoareTripleChecker+Invalid, 4887 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 436 IncrementalHoareTripleChecker+Valid, 4451 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-02-24 00:30:47,716 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1072 Valid, 2476 Invalid, 4887 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [436 Valid, 4451 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-02-24 00:30:47,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 926 states. [2022-02-24 00:30:47,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 926 to 806. [2022-02-24 00:30:47,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 806 states, 631 states have (on average 1.3565768621236134) internal successors, (856), 644 states have internal predecessors, (856), 107 states have call successors, (107), 49 states have call predecessors, (107), 67 states have return successors, (136), 119 states have call predecessors, (136), 100 states have call successors, (136) [2022-02-24 00:30:47,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 806 states to 806 states and 1099 transitions. [2022-02-24 00:30:47,802 INFO L78 Accepts]: Start accepts. Automaton has 806 states and 1099 transitions. Word has length 55 [2022-02-24 00:30:47,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 00:30:47,802 INFO L470 AbstractCegarLoop]: Abstraction has 806 states and 1099 transitions. [2022-02-24 00:30:47,802 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.7333333333333334) internal successors, (41), 7 states have internal predecessors, (41), 3 states have call successors, (8), 8 states have call predecessors, (8), 3 states have return successors, (6), 4 states have call predecessors, (6), 2 states have call successors, (6) [2022-02-24 00:30:47,802 INFO L276 IsEmpty]: Start isEmpty. Operand 806 states and 1099 transitions. [2022-02-24 00:30:47,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-02-24 00:30:47,805 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 00:30:47,805 INFO L514 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] [2022-02-24 00:30:47,805 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-02-24 00:30:47,805 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 00:30:47,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 00:30:47,805 INFO L85 PathProgramCache]: Analyzing trace with hash -755849646, now seen corresponding path program 1 times [2022-02-24 00:30:47,805 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-24 00:30:47,806 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135041755] [2022-02-24 00:30:47,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 00:30:47,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 00:30:47,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:30:47,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 00:30:47,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:30:47,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 00:30:47,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:30:47,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-24 00:30:47,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:30:47,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-02-24 00:30:47,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:30:47,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-02-24 00:30:47,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:30:48,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-02-24 00:30:48,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:30:48,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 00:30:48,064 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-24 00:30:48,064 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135041755] [2022-02-24 00:30:48,064 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [135041755] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 00:30:48,064 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 00:30:48,064 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-02-24 00:30:48,064 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366861005] [2022-02-24 00:30:48,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 00:30:48,065 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-02-24 00:30:48,065 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-24 00:30:48,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-02-24 00:30:48,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2022-02-24 00:30:48,065 INFO L87 Difference]: Start difference. First operand 806 states and 1099 transitions. Second operand has 15 states, 15 states have (on average 2.8) internal successors, (42), 7 states have internal predecessors, (42), 2 states have call successors, (8), 7 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 1 states have call successors, (6) [2022-02-24 00:30:51,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 00:30:51,123 INFO L93 Difference]: Finished difference Result 942 states and 1326 transitions. [2022-02-24 00:30:51,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-02-24 00:30:51,124 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.8) internal successors, (42), 7 states have internal predecessors, (42), 2 states have call successors, (8), 7 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 1 states have call successors, (6) Word has length 56 [2022-02-24 00:30:51,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 00:30:51,127 INFO L225 Difference]: With dead ends: 942 [2022-02-24 00:30:51,127 INFO L226 Difference]: Without dead ends: 924 [2022-02-24 00:30:51,127 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2022-02-24 00:30:51,127 INFO L933 BasicCegarLoop]: 673 mSDtfsCounter, 338 mSDsluCounter, 2155 mSDsCounter, 0 mSdLazyCounter, 5915 mSolverCounterSat, 139 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 340 SdHoareTripleChecker+Valid, 2828 SdHoareTripleChecker+Invalid, 6054 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 139 IncrementalHoareTripleChecker+Valid, 5915 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-02-24 00:30:51,127 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [340 Valid, 2828 Invalid, 6054 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [139 Valid, 5915 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-02-24 00:30:51,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 924 states. [2022-02-24 00:30:51,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 924 to 804. [2022-02-24 00:30:51,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 804 states, 630 states have (on average 1.3555555555555556) internal successors, (854), 643 states have internal predecessors, (854), 106 states have call successors, (106), 49 states have call predecessors, (106), 67 states have return successors, (135), 118 states have call predecessors, (135), 99 states have call successors, (135) [2022-02-24 00:30:51,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 804 states to 804 states and 1095 transitions. [2022-02-24 00:30:51,213 INFO L78 Accepts]: Start accepts. Automaton has 804 states and 1095 transitions. Word has length 56 [2022-02-24 00:30:51,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 00:30:51,213 INFO L470 AbstractCegarLoop]: Abstraction has 804 states and 1095 transitions. [2022-02-24 00:30:51,213 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.8) internal successors, (42), 7 states have internal predecessors, (42), 2 states have call successors, (8), 7 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 1 states have call successors, (6) [2022-02-24 00:30:51,213 INFO L276 IsEmpty]: Start isEmpty. Operand 804 states and 1095 transitions. [2022-02-24 00:30:51,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-02-24 00:30:51,215 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 00:30:51,215 INFO L514 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] [2022-02-24 00:30:51,215 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-02-24 00:30:51,215 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 00:30:51,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 00:30:51,216 INFO L85 PathProgramCache]: Analyzing trace with hash -303401055, now seen corresponding path program 1 times [2022-02-24 00:30:51,216 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-24 00:30:51,216 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [956354351] [2022-02-24 00:30:51,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 00:30:51,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 00:30:51,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:30:51,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 00:30:51,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:30:51,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 00:30:51,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:30:51,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-24 00:30:51,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:30:51,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-02-24 00:30:51,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:30:51,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-02-24 00:30:51,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:30:51,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-02-24 00:30:51,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:30:51,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 00:30:51,449 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-24 00:30:51,450 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [956354351] [2022-02-24 00:30:51,450 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [956354351] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 00:30:51,450 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 00:30:51,450 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-02-24 00:30:51,450 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745510176] [2022-02-24 00:30:51,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 00:30:51,451 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-02-24 00:30:51,452 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-24 00:30:51,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-02-24 00:30:51,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2022-02-24 00:30:51,453 INFO L87 Difference]: Start difference. First operand 804 states and 1095 transitions. Second operand has 15 states, 15 states have (on average 2.7333333333333334) internal successors, (41), 7 states have internal predecessors, (41), 2 states have call successors, (8), 7 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 1 states have call successors, (6) [2022-02-24 00:30:54,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 00:30:54,077 INFO L93 Difference]: Finished difference Result 937 states and 1319 transitions. [2022-02-24 00:30:54,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-02-24 00:30:54,078 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.7333333333333334) internal successors, (41), 7 states have internal predecessors, (41), 2 states have call successors, (8), 7 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 1 states have call successors, (6) Word has length 55 [2022-02-24 00:30:54,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 00:30:54,080 INFO L225 Difference]: With dead ends: 937 [2022-02-24 00:30:54,080 INFO L226 Difference]: Without dead ends: 919 [2022-02-24 00:30:54,081 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2022-02-24 00:30:54,081 INFO L933 BasicCegarLoop]: 657 mSDtfsCounter, 350 mSDsluCounter, 2016 mSDsCounter, 0 mSdLazyCounter, 5447 mSolverCounterSat, 140 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 352 SdHoareTripleChecker+Valid, 2673 SdHoareTripleChecker+Invalid, 5587 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 140 IncrementalHoareTripleChecker+Valid, 5447 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-02-24 00:30:54,081 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [352 Valid, 2673 Invalid, 5587 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [140 Valid, 5447 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-02-24 00:30:54,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 919 states. [2022-02-24 00:30:54,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 919 to 799. [2022-02-24 00:30:54,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 799 states, 627 states have (on average 1.3556618819776713) internal successors, (850), 640 states have internal predecessors, (850), 105 states have call successors, (105), 49 states have call predecessors, (105), 66 states have return successors, (133), 116 states have call predecessors, (133), 98 states have call successors, (133) [2022-02-24 00:30:54,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 799 states to 799 states and 1088 transitions. [2022-02-24 00:30:54,160 INFO L78 Accepts]: Start accepts. Automaton has 799 states and 1088 transitions. Word has length 55 [2022-02-24 00:30:54,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 00:30:54,160 INFO L470 AbstractCegarLoop]: Abstraction has 799 states and 1088 transitions. [2022-02-24 00:30:54,160 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.7333333333333334) internal successors, (41), 7 states have internal predecessors, (41), 2 states have call successors, (8), 7 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 1 states have call successors, (6) [2022-02-24 00:30:54,160 INFO L276 IsEmpty]: Start isEmpty. Operand 799 states and 1088 transitions. [2022-02-24 00:30:54,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-02-24 00:30:54,162 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 00:30:54,162 INFO L514 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] [2022-02-24 00:30:54,162 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-02-24 00:30:54,163 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 00:30:54,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 00:30:54,163 INFO L85 PathProgramCache]: Analyzing trace with hash 1335002991, now seen corresponding path program 1 times [2022-02-24 00:30:54,163 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-24 00:30:54,163 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205796839] [2022-02-24 00:30:54,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 00:30:54,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 00:30:54,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:30:54,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 00:30:54,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:30:54,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 00:30:54,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:30:54,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-24 00:30:54,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:30:54,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-02-24 00:30:54,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:30:54,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-02-24 00:30:54,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:30:54,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-02-24 00:30:54,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:30:54,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 00:30:54,316 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-24 00:30:54,316 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205796839] [2022-02-24 00:30:54,316 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [205796839] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 00:30:54,316 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 00:30:54,316 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-02-24 00:30:54,316 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969203619] [2022-02-24 00:30:54,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 00:30:54,317 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-02-24 00:30:54,317 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-24 00:30:54,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-02-24 00:30:54,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-02-24 00:30:54,318 INFO L87 Difference]: Start difference. First operand 799 states and 1088 transitions. Second operand has 10 states, 10 states have (on average 4.2) internal successors, (42), 4 states have internal predecessors, (42), 3 states have call successors, (8), 8 states have call predecessors, (8), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-02-24 00:30:56,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 00:30:56,514 INFO L93 Difference]: Finished difference Result 984 states and 1370 transitions. [2022-02-24 00:30:56,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-02-24 00:30:56,514 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.2) internal successors, (42), 4 states have internal predecessors, (42), 3 states have call successors, (8), 8 states have call predecessors, (8), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 56 [2022-02-24 00:30:56,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 00:30:56,518 INFO L225 Difference]: With dead ends: 984 [2022-02-24 00:30:56,518 INFO L226 Difference]: Without dead ends: 941 [2022-02-24 00:30:56,518 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2022-02-24 00:30:56,519 INFO L933 BasicCegarLoop]: 678 mSDtfsCounter, 1160 mSDsluCounter, 665 mSDsCounter, 0 mSdLazyCounter, 2928 mSolverCounterSat, 242 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1170 SdHoareTripleChecker+Valid, 1343 SdHoareTripleChecker+Invalid, 3170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 242 IncrementalHoareTripleChecker+Valid, 2928 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-02-24 00:30:56,519 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1170 Valid, 1343 Invalid, 3170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [242 Valid, 2928 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-02-24 00:30:56,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 941 states. [2022-02-24 00:30:56,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 941 to 799. [2022-02-24 00:30:56,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 799 states, 627 states have (on average 1.354066985645933) internal successors, (849), 640 states have internal predecessors, (849), 105 states have call successors, (105), 49 states have call predecessors, (105), 66 states have return successors, (133), 116 states have call predecessors, (133), 98 states have call successors, (133) [2022-02-24 00:30:56,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 799 states to 799 states and 1087 transitions. [2022-02-24 00:30:56,590 INFO L78 Accepts]: Start accepts. Automaton has 799 states and 1087 transitions. Word has length 56 [2022-02-24 00:30:56,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 00:30:56,590 INFO L470 AbstractCegarLoop]: Abstraction has 799 states and 1087 transitions. [2022-02-24 00:30:56,590 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.2) internal successors, (42), 4 states have internal predecessors, (42), 3 states have call successors, (8), 8 states have call predecessors, (8), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-02-24 00:30:56,590 INFO L276 IsEmpty]: Start isEmpty. Operand 799 states and 1087 transitions. [2022-02-24 00:30:56,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-02-24 00:30:56,592 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 00:30:56,592 INFO L514 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] [2022-02-24 00:30:56,592 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-02-24 00:30:56,592 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 00:30:56,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 00:30:56,593 INFO L85 PathProgramCache]: Analyzing trace with hash 1948386428, now seen corresponding path program 1 times [2022-02-24 00:30:56,593 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-24 00:30:56,593 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272531777] [2022-02-24 00:30:56,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 00:30:56,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 00:30:56,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:30:56,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 00:30:56,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:30:56,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 00:30:56,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:30:56,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-24 00:30:56,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:30:56,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-02-24 00:30:56,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:30:56,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-02-24 00:30:56,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:30:56,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 00:30:56,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:30:56,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 00:30:56,733 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-24 00:30:56,733 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272531777] [2022-02-24 00:30:56,733 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1272531777] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 00:30:56,733 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 00:30:56,733 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-02-24 00:30:56,733 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147835577] [2022-02-24 00:30:56,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 00:30:56,734 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-24 00:30:56,734 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-24 00:30:56,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-24 00:30:56,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-02-24 00:30:56,735 INFO L87 Difference]: Start difference. First operand 799 states and 1087 transitions. Second operand has 8 states, 8 states have (on average 5.375) internal successors, (43), 3 states have internal predecessors, (43), 3 states have call successors, (12), 8 states have call predecessors, (12), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2022-02-24 00:30:58,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 00:30:58,271 INFO L93 Difference]: Finished difference Result 1186 states and 1642 transitions. [2022-02-24 00:30:58,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-02-24 00:30:58,272 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 3 states have internal predecessors, (43), 3 states have call successors, (12), 8 states have call predecessors, (12), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) Word has length 61 [2022-02-24 00:30:58,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 00:30:58,275 INFO L225 Difference]: With dead ends: 1186 [2022-02-24 00:30:58,275 INFO L226 Difference]: Without dead ends: 1023 [2022-02-24 00:30:58,276 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 3 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2022-02-24 00:30:58,276 INFO L933 BasicCegarLoop]: 663 mSDtfsCounter, 677 mSDsluCounter, 578 mSDsCounter, 0 mSdLazyCounter, 1342 mSolverCounterSat, 228 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 699 SdHoareTripleChecker+Valid, 1241 SdHoareTripleChecker+Invalid, 1570 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 228 IncrementalHoareTripleChecker+Valid, 1342 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-02-24 00:30:58,276 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [699 Valid, 1241 Invalid, 1570 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [228 Valid, 1342 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-02-24 00:30:58,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1023 states. [2022-02-24 00:30:58,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1023 to 840. [2022-02-24 00:30:58,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 840 states, 660 states have (on average 1.3424242424242425) internal successors, (886), 672 states have internal predecessors, (886), 106 states have call successors, (106), 53 states have call predecessors, (106), 73 states have return successors, (135), 121 states have call predecessors, (135), 100 states have call successors, (135) [2022-02-24 00:30:58,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 840 states to 840 states and 1127 transitions. [2022-02-24 00:30:58,366 INFO L78 Accepts]: Start accepts. Automaton has 840 states and 1127 transitions. Word has length 61 [2022-02-24 00:30:58,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 00:30:58,366 INFO L470 AbstractCegarLoop]: Abstraction has 840 states and 1127 transitions. [2022-02-24 00:30:58,366 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 3 states have internal predecessors, (43), 3 states have call successors, (12), 8 states have call predecessors, (12), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2022-02-24 00:30:58,366 INFO L276 IsEmpty]: Start isEmpty. Operand 840 states and 1127 transitions. [2022-02-24 00:30:58,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-02-24 00:30:58,368 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 00:30:58,368 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 00:30:58,368 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-02-24 00:30:58,369 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 00:30:58,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 00:30:58,369 INFO L85 PathProgramCache]: Analyzing trace with hash -1337798748, now seen corresponding path program 1 times [2022-02-24 00:30:58,369 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-24 00:30:58,369 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183505694] [2022-02-24 00:30:58,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 00:30:58,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 00:30:58,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:30:58,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 00:30:58,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:30:58,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 00:30:58,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:30:58,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-24 00:30:58,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:30:58,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-02-24 00:30:58,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:30:58,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-24 00:30:58,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:30:58,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-02-24 00:30:58,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:30:58,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-02-24 00:30:58,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:30:58,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 00:30:58,709 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-24 00:30:58,709 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183505694] [2022-02-24 00:30:58,709 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1183505694] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 00:30:58,709 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 00:30:58,709 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-02-24 00:30:58,709 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610872369] [2022-02-24 00:30:58,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 00:30:58,710 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-02-24 00:30:58,710 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-24 00:30:58,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-02-24 00:30:58,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=327, Unknown=0, NotChecked=0, Total=380 [2022-02-24 00:30:58,711 INFO L87 Difference]: Start difference. First operand 840 states and 1127 transitions. Second operand has 20 states, 19 states have (on average 2.4210526315789473) internal successors, (46), 10 states have internal predecessors, (46), 4 states have call successors, (9), 9 states have call predecessors, (9), 4 states have return successors, (7), 5 states have call predecessors, (7), 3 states have call successors, (7) [2022-02-24 00:31:01,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 00:31:01,510 INFO L93 Difference]: Finished difference Result 1008 states and 1399 transitions. [2022-02-24 00:31:01,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-02-24 00:31:01,511 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 2.4210526315789473) internal successors, (46), 10 states have internal predecessors, (46), 4 states have call successors, (9), 9 states have call predecessors, (9), 4 states have return successors, (7), 5 states have call predecessors, (7), 3 states have call successors, (7) Word has length 62 [2022-02-24 00:31:01,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 00:31:01,519 INFO L225 Difference]: With dead ends: 1008 [2022-02-24 00:31:01,519 INFO L226 Difference]: Without dead ends: 984 [2022-02-24 00:31:01,520 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=99, Invalid=603, Unknown=0, NotChecked=0, Total=702 [2022-02-24 00:31:01,520 INFO L933 BasicCegarLoop]: 655 mSDtfsCounter, 1013 mSDsluCounter, 2764 mSDsCounter, 0 mSdLazyCounter, 5964 mSolverCounterSat, 426 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1019 SdHoareTripleChecker+Valid, 3419 SdHoareTripleChecker+Invalid, 6390 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 426 IncrementalHoareTripleChecker+Valid, 5964 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-02-24 00:31:01,521 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1019 Valid, 3419 Invalid, 6390 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [426 Valid, 5964 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-02-24 00:31:01,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 984 states. [2022-02-24 00:31:01,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 984 to 838. [2022-02-24 00:31:01,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 838 states, 659 states have (on average 1.3414264036418817) internal successors, (884), 671 states have internal predecessors, (884), 105 states have call successors, (105), 53 states have call predecessors, (105), 73 states have return successors, (134), 120 states have call predecessors, (134), 99 states have call successors, (134) [2022-02-24 00:31:01,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 838 states to 838 states and 1123 transitions. [2022-02-24 00:31:01,627 INFO L78 Accepts]: Start accepts. Automaton has 838 states and 1123 transitions. Word has length 62 [2022-02-24 00:31:01,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 00:31:01,627 INFO L470 AbstractCegarLoop]: Abstraction has 838 states and 1123 transitions. [2022-02-24 00:31:01,627 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 2.4210526315789473) internal successors, (46), 10 states have internal predecessors, (46), 4 states have call successors, (9), 9 states have call predecessors, (9), 4 states have return successors, (7), 5 states have call predecessors, (7), 3 states have call successors, (7) [2022-02-24 00:31:01,627 INFO L276 IsEmpty]: Start isEmpty. Operand 838 states and 1123 transitions. [2022-02-24 00:31:01,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-02-24 00:31:01,629 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 00:31:01,629 INFO L514 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] [2022-02-24 00:31:01,629 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-02-24 00:31:01,630 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 00:31:01,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 00:31:01,630 INFO L85 PathProgramCache]: Analyzing trace with hash 1214008405, now seen corresponding path program 1 times [2022-02-24 00:31:01,630 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-24 00:31:01,630 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257536541] [2022-02-24 00:31:01,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 00:31:01,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 00:31:01,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:31:01,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 00:31:01,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:31:01,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 00:31:01,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:31:01,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-24 00:31:01,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:31:01,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-02-24 00:31:01,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:31:01,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-24 00:31:01,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:31:01,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-02-24 00:31:01,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:31:01,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-02-24 00:31:01,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:31:01,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 00:31:01,939 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-24 00:31:01,939 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257536541] [2022-02-24 00:31:01,939 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [257536541] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 00:31:01,939 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 00:31:01,939 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-02-24 00:31:01,940 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981166121] [2022-02-24 00:31:01,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 00:31:01,940 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-02-24 00:31:01,940 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-24 00:31:01,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-02-24 00:31:01,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=327, Unknown=0, NotChecked=0, Total=380 [2022-02-24 00:31:01,941 INFO L87 Difference]: Start difference. First operand 838 states and 1123 transitions. Second operand has 20 states, 19 states have (on average 2.263157894736842) internal successors, (43), 10 states have internal predecessors, (43), 4 states have call successors, (9), 9 states have call predecessors, (9), 4 states have return successors, (7), 5 states have call predecessors, (7), 3 states have call successors, (7) [2022-02-24 00:31:04,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 00:31:04,949 INFO L93 Difference]: Finished difference Result 1006 states and 1395 transitions. [2022-02-24 00:31:04,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-02-24 00:31:04,949 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 2.263157894736842) internal successors, (43), 10 states have internal predecessors, (43), 4 states have call successors, (9), 9 states have call predecessors, (9), 4 states have return successors, (7), 5 states have call predecessors, (7), 3 states have call successors, (7) Word has length 59 [2022-02-24 00:31:04,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 00:31:04,952 INFO L225 Difference]: With dead ends: 1006 [2022-02-24 00:31:04,952 INFO L226 Difference]: Without dead ends: 980 [2022-02-24 00:31:04,953 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=99, Invalid=603, Unknown=0, NotChecked=0, Total=702 [2022-02-24 00:31:04,953 INFO L933 BasicCegarLoop]: 634 mSDtfsCounter, 1331 mSDsluCounter, 2561 mSDsCounter, 0 mSdLazyCounter, 6274 mSolverCounterSat, 550 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1335 SdHoareTripleChecker+Valid, 3195 SdHoareTripleChecker+Invalid, 6824 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 550 IncrementalHoareTripleChecker+Valid, 6274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-02-24 00:31:04,953 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1335 Valid, 3195 Invalid, 6824 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [550 Valid, 6274 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-02-24 00:31:04,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 980 states. [2022-02-24 00:31:05,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 980 to 837. [2022-02-24 00:31:05,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 837 states, 658 states have (on average 1.3267477203647415) internal successors, (873), 670 states have internal predecessors, (873), 105 states have call successors, (105), 53 states have call predecessors, (105), 73 states have return successors, (134), 120 states have call predecessors, (134), 99 states have call successors, (134) [2022-02-24 00:31:05,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 837 states to 837 states and 1112 transitions. [2022-02-24 00:31:05,039 INFO L78 Accepts]: Start accepts. Automaton has 837 states and 1112 transitions. Word has length 59 [2022-02-24 00:31:05,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 00:31:05,039 INFO L470 AbstractCegarLoop]: Abstraction has 837 states and 1112 transitions. [2022-02-24 00:31:05,039 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 2.263157894736842) internal successors, (43), 10 states have internal predecessors, (43), 4 states have call successors, (9), 9 states have call predecessors, (9), 4 states have return successors, (7), 5 states have call predecessors, (7), 3 states have call successors, (7) [2022-02-24 00:31:05,039 INFO L276 IsEmpty]: Start isEmpty. Operand 837 states and 1112 transitions. [2022-02-24 00:31:05,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-02-24 00:31:05,041 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 00:31:05,041 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 00:31:05,041 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-02-24 00:31:05,041 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 00:31:05,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 00:31:05,042 INFO L85 PathProgramCache]: Analyzing trace with hash -55485367, now seen corresponding path program 1 times [2022-02-24 00:31:05,042 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-24 00:31:05,042 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454199491] [2022-02-24 00:31:05,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 00:31:05,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 00:31:05,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:31:05,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 00:31:05,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:31:05,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 00:31:05,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:31:05,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-24 00:31:05,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:31:05,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-02-24 00:31:05,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:31:05,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 00:31:05,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:31:05,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-02-24 00:31:05,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:31:05,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 00:31:05,308 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-24 00:31:05,308 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454199491] [2022-02-24 00:31:05,308 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1454199491] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 00:31:05,308 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 00:31:05,308 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-02-24 00:31:05,308 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691085631] [2022-02-24 00:31:05,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 00:31:05,308 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-02-24 00:31:05,308 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-24 00:31:05,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-02-24 00:31:05,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2022-02-24 00:31:05,310 INFO L87 Difference]: Start difference. First operand 837 states and 1112 transitions. Second operand has 16 states, 16 states have (on average 2.75) internal successors, (44), 8 states have internal predecessors, (44), 2 states have call successors, (8), 7 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 1 states have call successors, (6) [2022-02-24 00:31:08,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 00:31:08,171 INFO L93 Difference]: Finished difference Result 995 states and 1369 transitions. [2022-02-24 00:31:08,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-02-24 00:31:08,172 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.75) internal successors, (44), 8 states have internal predecessors, (44), 2 states have call successors, (8), 7 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 1 states have call successors, (6) Word has length 58 [2022-02-24 00:31:08,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 00:31:08,174 INFO L225 Difference]: With dead ends: 995 [2022-02-24 00:31:08,174 INFO L226 Difference]: Without dead ends: 975 [2022-02-24 00:31:08,175 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2022-02-24 00:31:08,175 INFO L933 BasicCegarLoop]: 649 mSDtfsCounter, 324 mSDsluCounter, 2275 mSDsCounter, 0 mSdLazyCounter, 5838 mSolverCounterSat, 135 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 326 SdHoareTripleChecker+Valid, 2924 SdHoareTripleChecker+Invalid, 5973 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 135 IncrementalHoareTripleChecker+Valid, 5838 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-02-24 00:31:08,175 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [326 Valid, 2924 Invalid, 5973 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [135 Valid, 5838 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-02-24 00:31:08,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 975 states. [2022-02-24 00:31:08,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 975 to 834. [2022-02-24 00:31:08,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 834 states, 656 states have (on average 1.326219512195122) internal successors, (870), 668 states have internal predecessors, (870), 104 states have call successors, (104), 53 states have call predecessors, (104), 73 states have return successors, (133), 119 states have call predecessors, (133), 98 states have call successors, (133) [2022-02-24 00:31:08,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 834 states to 834 states and 1107 transitions. [2022-02-24 00:31:08,249 INFO L78 Accepts]: Start accepts. Automaton has 834 states and 1107 transitions. Word has length 58 [2022-02-24 00:31:08,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 00:31:08,249 INFO L470 AbstractCegarLoop]: Abstraction has 834 states and 1107 transitions. [2022-02-24 00:31:08,249 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.75) internal successors, (44), 8 states have internal predecessors, (44), 2 states have call successors, (8), 7 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 1 states have call successors, (6) [2022-02-24 00:31:08,249 INFO L276 IsEmpty]: Start isEmpty. Operand 834 states and 1107 transitions. [2022-02-24 00:31:08,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-02-24 00:31:08,251 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 00:31:08,251 INFO L514 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] [2022-02-24 00:31:08,251 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-02-24 00:31:08,251 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 00:31:08,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 00:31:08,252 INFO L85 PathProgramCache]: Analyzing trace with hash -57775299, now seen corresponding path program 1 times [2022-02-24 00:31:08,252 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-24 00:31:08,252 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008363275] [2022-02-24 00:31:08,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 00:31:08,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 00:31:08,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:31:08,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 00:31:08,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:31:08,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 00:31:08,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:31:08,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-24 00:31:08,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:31:08,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-02-24 00:31:08,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:31:08,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-02-24 00:31:08,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:31:08,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-24 00:31:08,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:31:08,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-02-24 00:31:08,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:31:08,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 00:31:08,414 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-24 00:31:08,414 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008363275] [2022-02-24 00:31:08,415 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1008363275] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 00:31:08,415 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 00:31:08,415 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-02-24 00:31:08,415 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992547076] [2022-02-24 00:31:08,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 00:31:08,415 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-02-24 00:31:08,415 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-24 00:31:08,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-02-24 00:31:08,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-02-24 00:31:08,416 INFO L87 Difference]: Start difference. First operand 834 states and 1107 transitions. Second operand has 11 states, 11 states have (on average 4.0) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-02-24 00:31:10,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 00:31:10,035 INFO L93 Difference]: Finished difference Result 1141 states and 1604 transitions. [2022-02-24 00:31:10,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-02-24 00:31:10,035 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.0) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 60 [2022-02-24 00:31:10,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 00:31:10,038 INFO L225 Difference]: With dead ends: 1141 [2022-02-24 00:31:10,038 INFO L226 Difference]: Without dead ends: 1036 [2022-02-24 00:31:10,039 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2022-02-24 00:31:10,039 INFO L933 BasicCegarLoop]: 628 mSDtfsCounter, 431 mSDsluCounter, 721 mSDsCounter, 0 mSdLazyCounter, 1619 mSolverCounterSat, 178 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 433 SdHoareTripleChecker+Valid, 1349 SdHoareTripleChecker+Invalid, 1797 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 178 IncrementalHoareTripleChecker+Valid, 1619 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-02-24 00:31:10,039 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [433 Valid, 1349 Invalid, 1797 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [178 Valid, 1619 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-02-24 00:31:10,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1036 states. [2022-02-24 00:31:10,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1036 to 841. [2022-02-24 00:31:10,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 841 states, 661 states have (on average 1.3267776096822996) internal successors, (877), 674 states have internal predecessors, (877), 105 states have call successors, (105), 53 states have call predecessors, (105), 74 states have return successors, (140), 120 states have call predecessors, (140), 99 states have call successors, (140) [2022-02-24 00:31:10,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 841 states to 841 states and 1122 transitions. [2022-02-24 00:31:10,117 INFO L78 Accepts]: Start accepts. Automaton has 841 states and 1122 transitions. Word has length 60 [2022-02-24 00:31:10,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 00:31:10,117 INFO L470 AbstractCegarLoop]: Abstraction has 841 states and 1122 transitions. [2022-02-24 00:31:10,117 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.0) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-02-24 00:31:10,117 INFO L276 IsEmpty]: Start isEmpty. Operand 841 states and 1122 transitions. [2022-02-24 00:31:10,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-02-24 00:31:10,119 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 00:31:10,119 INFO L514 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] [2022-02-24 00:31:10,119 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-02-24 00:31:10,119 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 00:31:10,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 00:31:10,120 INFO L85 PathProgramCache]: Analyzing trace with hash -2067879140, now seen corresponding path program 1 times [2022-02-24 00:31:10,120 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-24 00:31:10,120 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143534050] [2022-02-24 00:31:10,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 00:31:10,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 00:31:10,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:31:10,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 00:31:10,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:31:10,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 00:31:10,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:31:10,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-24 00:31:10,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:31:10,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-02-24 00:31:10,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:31:10,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-02-24 00:31:10,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:31:10,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-24 00:31:10,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:31:10,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-02-24 00:31:10,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:31:10,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 00:31:10,356 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-24 00:31:10,356 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143534050] [2022-02-24 00:31:10,356 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1143534050] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 00:31:10,356 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 00:31:10,356 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-02-24 00:31:10,357 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302534035] [2022-02-24 00:31:10,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 00:31:10,357 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-02-24 00:31:10,357 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-24 00:31:10,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-02-24 00:31:10,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2022-02-24 00:31:10,358 INFO L87 Difference]: Start difference. First operand 841 states and 1122 transitions. Second operand has 16 states, 16 states have (on average 2.75) internal successors, (44), 7 states have internal predecessors, (44), 3 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 4 states have call predecessors, (7), 2 states have call successors, (7) [2022-02-24 00:31:12,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 00:31:12,620 INFO L93 Difference]: Finished difference Result 1008 states and 1400 transitions. [2022-02-24 00:31:12,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-02-24 00:31:12,620 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.75) internal successors, (44), 7 states have internal predecessors, (44), 3 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 4 states have call predecessors, (7), 2 states have call successors, (7) Word has length 60 [2022-02-24 00:31:12,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 00:31:12,623 INFO L225 Difference]: With dead ends: 1008 [2022-02-24 00:31:12,623 INFO L226 Difference]: Without dead ends: 983 [2022-02-24 00:31:12,623 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2022-02-24 00:31:12,624 INFO L933 BasicCegarLoop]: 649 mSDtfsCounter, 981 mSDsluCounter, 1942 mSDsCounter, 0 mSdLazyCounter, 4405 mSolverCounterSat, 396 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 984 SdHoareTripleChecker+Valid, 2591 SdHoareTripleChecker+Invalid, 4801 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 396 IncrementalHoareTripleChecker+Valid, 4405 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-02-24 00:31:12,624 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [984 Valid, 2591 Invalid, 4801 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [396 Valid, 4405 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-02-24 00:31:12,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 983 states. [2022-02-24 00:31:12,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 983 to 839. [2022-02-24 00:31:12,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 839 states, 660 states have (on average 1.3257575757575757) internal successors, (875), 673 states have internal predecessors, (875), 104 states have call successors, (104), 53 states have call predecessors, (104), 74 states have return successors, (139), 119 states have call predecessors, (139), 98 states have call successors, (139) [2022-02-24 00:31:12,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 839 states to 839 states and 1118 transitions. [2022-02-24 00:31:12,692 INFO L78 Accepts]: Start accepts. Automaton has 839 states and 1118 transitions. Word has length 60 [2022-02-24 00:31:12,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 00:31:12,693 INFO L470 AbstractCegarLoop]: Abstraction has 839 states and 1118 transitions. [2022-02-24 00:31:12,693 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.75) internal successors, (44), 7 states have internal predecessors, (44), 3 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 4 states have call predecessors, (7), 2 states have call successors, (7) [2022-02-24 00:31:12,693 INFO L276 IsEmpty]: Start isEmpty. Operand 839 states and 1118 transitions. [2022-02-24 00:31:12,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-02-24 00:31:12,701 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 00:31:12,702 INFO L514 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] [2022-02-24 00:31:12,702 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-02-24 00:31:12,702 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 00:31:12,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 00:31:12,703 INFO L85 PathProgramCache]: Analyzing trace with hash 1557615113, now seen corresponding path program 1 times [2022-02-24 00:31:12,703 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-24 00:31:12,703 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403872630] [2022-02-24 00:31:12,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 00:31:12,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 00:31:12,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:31:12,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 00:31:12,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:31:12,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 00:31:12,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:31:12,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-24 00:31:12,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:31:12,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-02-24 00:31:12,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:31:12,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-02-24 00:31:12,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:31:12,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-02-24 00:31:12,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:31:12,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 00:31:12,932 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-24 00:31:12,932 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403872630] [2022-02-24 00:31:12,932 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [403872630] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 00:31:12,932 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 00:31:12,932 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-02-24 00:31:12,932 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633915259] [2022-02-24 00:31:12,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 00:31:12,932 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-02-24 00:31:12,932 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-24 00:31:12,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-02-24 00:31:12,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2022-02-24 00:31:12,933 INFO L87 Difference]: Start difference. First operand 839 states and 1118 transitions. Second operand has 16 states, 16 states have (on average 2.8125) internal successors, (45), 8 states have internal predecessors, (45), 3 states have call successors, (8), 8 states have call predecessors, (8), 3 states have return successors, (6), 4 states have call predecessors, (6), 2 states have call successors, (6) [2022-02-24 00:31:15,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 00:31:15,446 INFO L93 Difference]: Finished difference Result 1036 states and 1425 transitions. [2022-02-24 00:31:15,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-02-24 00:31:15,447 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.8125) internal successors, (45), 8 states have internal predecessors, (45), 3 states have call successors, (8), 8 states have call predecessors, (8), 3 states have return successors, (6), 4 states have call predecessors, (6), 2 states have call successors, (6) Word has length 59 [2022-02-24 00:31:15,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 00:31:15,449 INFO L225 Difference]: With dead ends: 1036 [2022-02-24 00:31:15,450 INFO L226 Difference]: Without dead ends: 968 [2022-02-24 00:31:15,450 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=92, Invalid=414, Unknown=0, NotChecked=0, Total=506 [2022-02-24 00:31:15,451 INFO L933 BasicCegarLoop]: 620 mSDtfsCounter, 963 mSDsluCounter, 1969 mSDsCounter, 0 mSdLazyCounter, 4804 mSolverCounterSat, 406 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 967 SdHoareTripleChecker+Valid, 2589 SdHoareTripleChecker+Invalid, 5210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 406 IncrementalHoareTripleChecker+Valid, 4804 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-02-24 00:31:15,451 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [967 Valid, 2589 Invalid, 5210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [406 Valid, 4804 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-02-24 00:31:15,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 968 states. [2022-02-24 00:31:15,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 968 to 827. [2022-02-24 00:31:15,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 827 states, 651 states have (on average 1.3210445468509984) internal successors, (860), 664 states have internal predecessors, (860), 101 states have call successors, (101), 53 states have call predecessors, (101), 74 states have return successors, (136), 116 states have call predecessors, (136), 95 states have call successors, (136) [2022-02-24 00:31:15,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 827 states to 827 states and 1097 transitions. [2022-02-24 00:31:15,522 INFO L78 Accepts]: Start accepts. Automaton has 827 states and 1097 transitions. Word has length 59 [2022-02-24 00:31:15,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 00:31:15,522 INFO L470 AbstractCegarLoop]: Abstraction has 827 states and 1097 transitions. [2022-02-24 00:31:15,522 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.8125) internal successors, (45), 8 states have internal predecessors, (45), 3 states have call successors, (8), 8 states have call predecessors, (8), 3 states have return successors, (6), 4 states have call predecessors, (6), 2 states have call successors, (6) [2022-02-24 00:31:15,522 INFO L276 IsEmpty]: Start isEmpty. Operand 827 states and 1097 transitions. [2022-02-24 00:31:15,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-02-24 00:31:15,524 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 00:31:15,524 INFO L514 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] [2022-02-24 00:31:15,524 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-02-24 00:31:15,524 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 00:31:15,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 00:31:15,524 INFO L85 PathProgramCache]: Analyzing trace with hash -1192878684, now seen corresponding path program 1 times [2022-02-24 00:31:15,524 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-24 00:31:15,524 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508478753] [2022-02-24 00:31:15,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 00:31:15,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 00:31:15,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:31:15,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 00:31:15,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:31:15,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 00:31:15,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:31:15,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-24 00:31:15,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:31:15,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-02-24 00:31:15,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:31:15,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-02-24 00:31:15,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:31:15,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-24 00:31:15,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:31:15,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-02-24 00:31:15,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:31:15,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 00:31:15,715 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-24 00:31:15,715 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508478753] [2022-02-24 00:31:15,715 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1508478753] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 00:31:15,715 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 00:31:15,715 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-02-24 00:31:15,715 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984345703] [2022-02-24 00:31:15,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 00:31:15,715 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-02-24 00:31:15,715 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-24 00:31:15,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-02-24 00:31:15,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2022-02-24 00:31:15,716 INFO L87 Difference]: Start difference. First operand 827 states and 1097 transitions. Second operand has 12 states, 12 states have (on average 3.75) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-02-24 00:31:17,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 00:31:17,174 INFO L93 Difference]: Finished difference Result 1016 states and 1419 transitions. [2022-02-24 00:31:17,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-02-24 00:31:17,174 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.75) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 61 [2022-02-24 00:31:17,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 00:31:17,177 INFO L225 Difference]: With dead ends: 1016 [2022-02-24 00:31:17,177 INFO L226 Difference]: Without dead ends: 982 [2022-02-24 00:31:17,177 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2022-02-24 00:31:17,178 INFO L933 BasicCegarLoop]: 609 mSDtfsCounter, 938 mSDsluCounter, 1162 mSDsCounter, 0 mSdLazyCounter, 1732 mSolverCounterSat, 427 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 940 SdHoareTripleChecker+Valid, 1771 SdHoareTripleChecker+Invalid, 2159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 427 IncrementalHoareTripleChecker+Valid, 1732 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-02-24 00:31:17,178 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [940 Valid, 1771 Invalid, 2159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [427 Valid, 1732 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-02-24 00:31:17,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 982 states. [2022-02-24 00:31:17,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 982 to 831. [2022-02-24 00:31:17,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 831 states, 653 states have (on average 1.3200612557427258) internal successors, (862), 668 states have internal predecessors, (862), 101 states have call successors, (101), 53 states have call predecessors, (101), 76 states have return successors, (152), 116 states have call predecessors, (152), 95 states have call successors, (152) [2022-02-24 00:31:17,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 831 states to 831 states and 1115 transitions. [2022-02-24 00:31:17,244 INFO L78 Accepts]: Start accepts. Automaton has 831 states and 1115 transitions. Word has length 61 [2022-02-24 00:31:17,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 00:31:17,244 INFO L470 AbstractCegarLoop]: Abstraction has 831 states and 1115 transitions. [2022-02-24 00:31:17,245 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.75) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-02-24 00:31:17,245 INFO L276 IsEmpty]: Start isEmpty. Operand 831 states and 1115 transitions. [2022-02-24 00:31:17,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-02-24 00:31:17,246 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 00:31:17,246 INFO L514 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] [2022-02-24 00:31:17,246 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-02-24 00:31:17,246 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 00:31:17,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 00:31:17,246 INFO L85 PathProgramCache]: Analyzing trace with hash 440130742, now seen corresponding path program 1 times [2022-02-24 00:31:17,246 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-24 00:31:17,246 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025566115] [2022-02-24 00:31:17,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 00:31:17,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 00:31:17,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:31:17,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 00:31:17,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:31:17,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 00:31:17,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:31:17,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-24 00:31:17,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:31:17,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-02-24 00:31:17,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:31:17,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-02-24 00:31:17,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:31:17,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-02-24 00:31:17,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:31:17,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 00:31:17,446 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-24 00:31:17,446 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025566115] [2022-02-24 00:31:17,446 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1025566115] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 00:31:17,446 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 00:31:17,446 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-02-24 00:31:17,446 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80826673] [2022-02-24 00:31:17,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 00:31:17,446 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-02-24 00:31:17,446 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-24 00:31:17,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-02-24 00:31:17,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2022-02-24 00:31:17,447 INFO L87 Difference]: Start difference. First operand 831 states and 1115 transitions. Second operand has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 4 states have internal predecessors, (46), 2 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) [2022-02-24 00:31:19,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 00:31:19,203 INFO L93 Difference]: Finished difference Result 1006 states and 1400 transitions. [2022-02-24 00:31:19,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-02-24 00:31:19,204 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 4 states have internal predecessors, (46), 2 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 60 [2022-02-24 00:31:19,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 00:31:19,210 INFO L225 Difference]: With dead ends: 1006 [2022-02-24 00:31:19,210 INFO L226 Difference]: Without dead ends: 974 [2022-02-24 00:31:19,211 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2022-02-24 00:31:19,211 INFO L933 BasicCegarLoop]: 607 mSDtfsCounter, 1205 mSDsluCounter, 1131 mSDsCounter, 0 mSdLazyCounter, 2450 mSolverCounterSat, 491 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1207 SdHoareTripleChecker+Valid, 1738 SdHoareTripleChecker+Invalid, 2941 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 491 IncrementalHoareTripleChecker+Valid, 2450 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-02-24 00:31:19,211 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1207 Valid, 1738 Invalid, 2941 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [491 Valid, 2450 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-02-24 00:31:19,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 974 states. [2022-02-24 00:31:19,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 974 to 831. [2022-02-24 00:31:19,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 831 states, 653 states have (on average 1.318529862174579) internal successors, (861), 668 states have internal predecessors, (861), 101 states have call successors, (101), 53 states have call predecessors, (101), 76 states have return successors, (152), 116 states have call predecessors, (152), 95 states have call successors, (152) [2022-02-24 00:31:19,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 831 states to 831 states and 1114 transitions. [2022-02-24 00:31:19,305 INFO L78 Accepts]: Start accepts. Automaton has 831 states and 1114 transitions. Word has length 60 [2022-02-24 00:31:19,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 00:31:19,306 INFO L470 AbstractCegarLoop]: Abstraction has 831 states and 1114 transitions. [2022-02-24 00:31:19,306 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 4 states have internal predecessors, (46), 2 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) [2022-02-24 00:31:19,306 INFO L276 IsEmpty]: Start isEmpty. Operand 831 states and 1114 transitions. [2022-02-24 00:31:19,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-02-24 00:31:19,307 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 00:31:19,307 INFO L514 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] [2022-02-24 00:31:19,307 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-02-24 00:31:19,307 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 00:31:19,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 00:31:19,307 INFO L85 PathProgramCache]: Analyzing trace with hash 185394197, now seen corresponding path program 1 times [2022-02-24 00:31:19,308 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-24 00:31:19,308 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809870860] [2022-02-24 00:31:19,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 00:31:19,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 00:31:19,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:31:19,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 00:31:19,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:31:19,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 00:31:19,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:31:19,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-24 00:31:19,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:31:19,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-02-24 00:31:19,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:31:19,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-02-24 00:31:19,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:31:19,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-02-24 00:31:19,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:31:19,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 00:31:19,543 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-24 00:31:19,543 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809870860] [2022-02-24 00:31:19,543 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [809870860] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 00:31:19,543 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 00:31:19,543 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-02-24 00:31:19,543 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480266406] [2022-02-24 00:31:19,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 00:31:19,544 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-02-24 00:31:19,544 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-24 00:31:19,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-02-24 00:31:19,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2022-02-24 00:31:19,545 INFO L87 Difference]: Start difference. First operand 831 states and 1114 transitions. Second operand has 16 states, 16 states have (on average 2.875) internal successors, (46), 8 states have internal predecessors, (46), 3 states have call successors, (8), 8 states have call predecessors, (8), 3 states have return successors, (6), 4 states have call predecessors, (6), 2 states have call successors, (6) [2022-02-24 00:31:21,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 00:31:21,976 INFO L93 Difference]: Finished difference Result 1013 states and 1417 transitions. [2022-02-24 00:31:21,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-02-24 00:31:21,977 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.875) internal successors, (46), 8 states have internal predecessors, (46), 3 states have call successors, (8), 8 states have call predecessors, (8), 3 states have return successors, (6), 4 states have call predecessors, (6), 2 states have call successors, (6) Word has length 60 [2022-02-24 00:31:21,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 00:31:21,979 INFO L225 Difference]: With dead ends: 1013 [2022-02-24 00:31:21,979 INFO L226 Difference]: Without dead ends: 961 [2022-02-24 00:31:21,980 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=92, Invalid=414, Unknown=0, NotChecked=0, Total=506 [2022-02-24 00:31:21,981 INFO L933 BasicCegarLoop]: 608 mSDtfsCounter, 364 mSDsluCounter, 1914 mSDsCounter, 0 mSdLazyCounter, 4475 mSolverCounterSat, 148 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 369 SdHoareTripleChecker+Valid, 2522 SdHoareTripleChecker+Invalid, 4623 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 148 IncrementalHoareTripleChecker+Valid, 4475 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-02-24 00:31:21,981 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [369 Valid, 2522 Invalid, 4623 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [148 Valid, 4475 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-02-24 00:31:21,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 961 states. [2022-02-24 00:31:22,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 961 to 823. [2022-02-24 00:31:22,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 823 states, 647 states have (on average 1.3137557959814528) internal successors, (850), 662 states have internal predecessors, (850), 99 states have call successors, (99), 53 states have call predecessors, (99), 76 states have return successors, (150), 114 states have call predecessors, (150), 93 states have call successors, (150) [2022-02-24 00:31:22,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 823 states to 823 states and 1099 transitions. [2022-02-24 00:31:22,057 INFO L78 Accepts]: Start accepts. Automaton has 823 states and 1099 transitions. Word has length 60 [2022-02-24 00:31:22,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 00:31:22,057 INFO L470 AbstractCegarLoop]: Abstraction has 823 states and 1099 transitions. [2022-02-24 00:31:22,057 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.875) internal successors, (46), 8 states have internal predecessors, (46), 3 states have call successors, (8), 8 states have call predecessors, (8), 3 states have return successors, (6), 4 states have call predecessors, (6), 2 states have call successors, (6) [2022-02-24 00:31:22,058 INFO L276 IsEmpty]: Start isEmpty. Operand 823 states and 1099 transitions. [2022-02-24 00:31:22,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-02-24 00:31:22,059 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 00:31:22,059 INFO L514 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] [2022-02-24 00:31:22,059 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-02-24 00:31:22,059 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 00:31:22,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 00:31:22,060 INFO L85 PathProgramCache]: Analyzing trace with hash 1536662915, now seen corresponding path program 1 times [2022-02-24 00:31:22,060 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-24 00:31:22,060 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849119351] [2022-02-24 00:31:22,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 00:31:22,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 00:31:22,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:31:22,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 00:31:22,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:31:22,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 00:31:22,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:31:22,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-24 00:31:22,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:31:22,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-02-24 00:31:22,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:31:22,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-24 00:31:22,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:31:22,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-02-24 00:31:22,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:31:22,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-02-24 00:31:22,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:31:22,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 00:31:22,417 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-24 00:31:22,418 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849119351] [2022-02-24 00:31:22,418 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [849119351] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 00:31:22,418 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 00:31:22,418 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-02-24 00:31:22,418 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984024217] [2022-02-24 00:31:22,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 00:31:22,418 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-02-24 00:31:22,418 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-24 00:31:22,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-02-24 00:31:22,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=296, Unknown=0, NotChecked=0, Total=342 [2022-02-24 00:31:22,419 INFO L87 Difference]: Start difference. First operand 823 states and 1099 transitions. Second operand has 19 states, 19 states have (on average 2.789473684210526) internal successors, (53), 9 states have internal predecessors, (53), 2 states have call successors, (9), 8 states have call predecessors, (9), 5 states have return successors, (7), 5 states have call predecessors, (7), 1 states have call successors, (7) [2022-02-24 00:31:24,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 00:31:24,903 INFO L93 Difference]: Finished difference Result 978 states and 1360 transitions. [2022-02-24 00:31:24,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-02-24 00:31:24,904 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.789473684210526) internal successors, (53), 9 states have internal predecessors, (53), 2 states have call successors, (9), 8 states have call predecessors, (9), 5 states have return successors, (7), 5 states have call predecessors, (7), 1 states have call successors, (7) Word has length 69 [2022-02-24 00:31:24,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 00:31:24,907 INFO L225 Difference]: With dead ends: 978 [2022-02-24 00:31:24,907 INFO L226 Difference]: Without dead ends: 948 [2022-02-24 00:31:24,907 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=54, Invalid=366, Unknown=0, NotChecked=0, Total=420 [2022-02-24 00:31:24,908 INFO L933 BasicCegarLoop]: 603 mSDtfsCounter, 1448 mSDsluCounter, 2529 mSDsCounter, 0 mSdLazyCounter, 5235 mSolverCounterSat, 596 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1450 SdHoareTripleChecker+Valid, 3132 SdHoareTripleChecker+Invalid, 5831 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 596 IncrementalHoareTripleChecker+Valid, 5235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-02-24 00:31:24,908 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1450 Valid, 3132 Invalid, 5831 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [596 Valid, 5235 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-02-24 00:31:24,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 948 states. [2022-02-24 00:31:24,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 948 to 812. [2022-02-24 00:31:24,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 812 states, 639 states have (on average 1.3145539906103287) internal successors, (840), 654 states have internal predecessors, (840), 97 states have call successors, (97), 53 states have call predecessors, (97), 75 states have return successors, (147), 111 states have call predecessors, (147), 91 states have call successors, (147) [2022-02-24 00:31:24,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 812 states to 812 states and 1084 transitions. [2022-02-24 00:31:24,991 INFO L78 Accepts]: Start accepts. Automaton has 812 states and 1084 transitions. Word has length 69 [2022-02-24 00:31:24,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 00:31:24,991 INFO L470 AbstractCegarLoop]: Abstraction has 812 states and 1084 transitions. [2022-02-24 00:31:24,991 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.789473684210526) internal successors, (53), 9 states have internal predecessors, (53), 2 states have call successors, (9), 8 states have call predecessors, (9), 5 states have return successors, (7), 5 states have call predecessors, (7), 1 states have call successors, (7) [2022-02-24 00:31:24,992 INFO L276 IsEmpty]: Start isEmpty. Operand 812 states and 1084 transitions. [2022-02-24 00:31:24,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-02-24 00:31:24,993 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 00:31:24,993 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 00:31:24,993 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-02-24 00:31:24,994 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 00:31:24,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 00:31:24,994 INFO L85 PathProgramCache]: Analyzing trace with hash -1158774888, now seen corresponding path program 1 times [2022-02-24 00:31:24,994 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-24 00:31:24,994 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220207645] [2022-02-24 00:31:24,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 00:31:24,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 00:31:25,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:31:25,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 00:31:25,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:31:25,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 00:31:25,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:31:25,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-24 00:31:25,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:31:25,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-02-24 00:31:25,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:31:25,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-02-24 00:31:25,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:31:25,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-24 00:31:25,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:31:25,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-02-24 00:31:25,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:31:25,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 00:31:25,245 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-24 00:31:25,245 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220207645] [2022-02-24 00:31:25,246 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1220207645] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 00:31:25,246 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 00:31:25,246 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-02-24 00:31:25,246 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086525172] [2022-02-24 00:31:25,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 00:31:25,247 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-02-24 00:31:25,247 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-24 00:31:25,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-02-24 00:31:25,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=296, Unknown=0, NotChecked=0, Total=342 [2022-02-24 00:31:25,249 INFO L87 Difference]: Start difference. First operand 812 states and 1084 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 9 states have internal predecessors, (47), 2 states have call successors, (9), 8 states have call predecessors, (9), 5 states have return successors, (7), 5 states have call predecessors, (7), 1 states have call successors, (7) [2022-02-24 00:31:27,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 00:31:27,825 INFO L93 Difference]: Finished difference Result 965 states and 1341 transitions. [2022-02-24 00:31:27,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-02-24 00:31:27,825 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 9 states have internal predecessors, (47), 2 states have call successors, (9), 8 states have call predecessors, (9), 5 states have return successors, (7), 5 states have call predecessors, (7), 1 states have call successors, (7) Word has length 63 [2022-02-24 00:31:27,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 00:31:27,828 INFO L225 Difference]: With dead ends: 965 [2022-02-24 00:31:27,828 INFO L226 Difference]: Without dead ends: 943 [2022-02-24 00:31:27,828 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=61, Invalid=401, Unknown=0, NotChecked=0, Total=462 [2022-02-24 00:31:27,829 INFO L933 BasicCegarLoop]: 588 mSDtfsCounter, 577 mSDsluCounter, 2653 mSDsCounter, 0 mSdLazyCounter, 6080 mSolverCounterSat, 235 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 579 SdHoareTripleChecker+Valid, 3241 SdHoareTripleChecker+Invalid, 6315 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 235 IncrementalHoareTripleChecker+Valid, 6080 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-02-24 00:31:27,829 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [579 Valid, 3241 Invalid, 6315 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [235 Valid, 6080 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-02-24 00:31:27,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 943 states. [2022-02-24 00:31:27,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 943 to 807. [2022-02-24 00:31:27,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 807 states, 636 states have (on average 1.3144654088050314) internal successors, (836), 651 states have internal predecessors, (836), 96 states have call successors, (96), 53 states have call predecessors, (96), 74 states have return successors, (145), 109 states have call predecessors, (145), 90 states have call successors, (145) [2022-02-24 00:31:27,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 807 states to 807 states and 1077 transitions. [2022-02-24 00:31:27,911 INFO L78 Accepts]: Start accepts. Automaton has 807 states and 1077 transitions. Word has length 63 [2022-02-24 00:31:27,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 00:31:27,911 INFO L470 AbstractCegarLoop]: Abstraction has 807 states and 1077 transitions. [2022-02-24 00:31:27,911 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 9 states have internal predecessors, (47), 2 states have call successors, (9), 8 states have call predecessors, (9), 5 states have return successors, (7), 5 states have call predecessors, (7), 1 states have call successors, (7) [2022-02-24 00:31:27,911 INFO L276 IsEmpty]: Start isEmpty. Operand 807 states and 1077 transitions. [2022-02-24 00:31:27,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-02-24 00:31:27,913 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 00:31:27,913 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 00:31:27,913 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-02-24 00:31:27,913 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 00:31:27,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 00:31:27,914 INFO L85 PathProgramCache]: Analyzing trace with hash 1342281155, now seen corresponding path program 1 times [2022-02-24 00:31:27,914 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-24 00:31:27,914 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874899938] [2022-02-24 00:31:27,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 00:31:27,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 00:31:27,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:31:27,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 00:31:27,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:31:28,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 00:31:28,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:31:28,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-24 00:31:28,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:31:28,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-02-24 00:31:28,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:31:28,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-02-24 00:31:28,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:31:28,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-24 00:31:28,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:31:28,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-02-24 00:31:28,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:31:28,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 00:31:28,207 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-24 00:31:28,207 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874899938] [2022-02-24 00:31:28,207 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1874899938] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 00:31:28,207 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 00:31:28,208 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-02-24 00:31:28,208 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727250982] [2022-02-24 00:31:28,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 00:31:28,208 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-02-24 00:31:28,208 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-24 00:31:28,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-02-24 00:31:28,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=296, Unknown=0, NotChecked=0, Total=342 [2022-02-24 00:31:28,209 INFO L87 Difference]: Start difference. First operand 807 states and 1077 transitions. Second operand has 19 states, 19 states have (on average 2.4210526315789473) internal successors, (46), 9 states have internal predecessors, (46), 2 states have call successors, (9), 8 states have call predecessors, (9), 5 states have return successors, (7), 5 states have call predecessors, (7), 1 states have call successors, (7) [2022-02-24 00:31:30,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 00:31:30,329 INFO L93 Difference]: Finished difference Result 960 states and 1334 transitions. [2022-02-24 00:31:30,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-02-24 00:31:30,334 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.4210526315789473) internal successors, (46), 9 states have internal predecessors, (46), 2 states have call successors, (9), 8 states have call predecessors, (9), 5 states have return successors, (7), 5 states have call predecessors, (7), 1 states have call successors, (7) Word has length 62 [2022-02-24 00:31:30,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 00:31:30,338 INFO L225 Difference]: With dead ends: 960 [2022-02-24 00:31:30,338 INFO L226 Difference]: Without dead ends: 938 [2022-02-24 00:31:30,338 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=54, Invalid=366, Unknown=0, NotChecked=0, Total=420 [2022-02-24 00:31:30,339 INFO L933 BasicCegarLoop]: 581 mSDtfsCounter, 854 mSDsluCounter, 2458 mSDsCounter, 0 mSdLazyCounter, 5060 mSolverCounterSat, 347 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 856 SdHoareTripleChecker+Valid, 3039 SdHoareTripleChecker+Invalid, 5407 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 347 IncrementalHoareTripleChecker+Valid, 5060 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-02-24 00:31:30,339 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [856 Valid, 3039 Invalid, 5407 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [347 Valid, 5060 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-02-24 00:31:30,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 938 states. [2022-02-24 00:31:30,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 938 to 802. [2022-02-24 00:31:30,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 802 states, 633 states have (on average 1.3143759873617693) internal successors, (832), 648 states have internal predecessors, (832), 95 states have call successors, (95), 53 states have call predecessors, (95), 73 states have return successors, (143), 107 states have call predecessors, (143), 89 states have call successors, (143) [2022-02-24 00:31:30,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 802 states to 802 states and 1070 transitions. [2022-02-24 00:31:30,417 INFO L78 Accepts]: Start accepts. Automaton has 802 states and 1070 transitions. Word has length 62 [2022-02-24 00:31:30,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 00:31:30,417 INFO L470 AbstractCegarLoop]: Abstraction has 802 states and 1070 transitions. [2022-02-24 00:31:30,417 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.4210526315789473) internal successors, (46), 9 states have internal predecessors, (46), 2 states have call successors, (9), 8 states have call predecessors, (9), 5 states have return successors, (7), 5 states have call predecessors, (7), 1 states have call successors, (7) [2022-02-24 00:31:30,417 INFO L276 IsEmpty]: Start isEmpty. Operand 802 states and 1070 transitions. [2022-02-24 00:31:30,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-02-24 00:31:30,418 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 00:31:30,418 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 00:31:30,418 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-02-24 00:31:30,419 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 00:31:30,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 00:31:30,419 INFO L85 PathProgramCache]: Analyzing trace with hash 739520085, now seen corresponding path program 1 times [2022-02-24 00:31:30,419 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-24 00:31:30,419 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424549590] [2022-02-24 00:31:30,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 00:31:30,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 00:31:30,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:31:30,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 00:31:30,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:31:30,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 00:31:30,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:31:30,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-24 00:31:30,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:31:30,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-02-24 00:31:30,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:31:30,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-24 00:31:30,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:31:30,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-02-24 00:31:30,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:31:30,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-02-24 00:31:30,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:31:30,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 00:31:30,708 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-24 00:31:30,708 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424549590] [2022-02-24 00:31:30,708 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [424549590] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 00:31:30,708 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 00:31:30,708 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-02-24 00:31:30,708 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557631488] [2022-02-24 00:31:30,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 00:31:30,709 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-02-24 00:31:30,709 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-24 00:31:30,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-02-24 00:31:30,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=327, Unknown=0, NotChecked=0, Total=380 [2022-02-24 00:31:30,710 INFO L87 Difference]: Start difference. First operand 802 states and 1070 transitions. Second operand has 20 states, 19 states have (on average 2.473684210526316) internal successors, (47), 10 states have internal predecessors, (47), 4 states have call successors, (9), 9 states have call predecessors, (9), 4 states have return successors, (7), 5 states have call predecessors, (7), 3 states have call successors, (7) [2022-02-24 00:31:33,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 00:31:33,537 INFO L93 Difference]: Finished difference Result 960 states and 1332 transitions. [2022-02-24 00:31:33,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-02-24 00:31:33,537 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 2.473684210526316) internal successors, (47), 10 states have internal predecessors, (47), 4 states have call successors, (9), 9 states have call predecessors, (9), 4 states have return successors, (7), 5 states have call predecessors, (7), 3 states have call successors, (7) Word has length 63 [2022-02-24 00:31:33,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 00:31:33,540 INFO L225 Difference]: With dead ends: 960 [2022-02-24 00:31:33,540 INFO L226 Difference]: Without dead ends: 936 [2022-02-24 00:31:33,541 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=99, Invalid=603, Unknown=0, NotChecked=0, Total=702 [2022-02-24 00:31:33,542 INFO L933 BasicCegarLoop]: 551 mSDtfsCounter, 592 mSDsluCounter, 2535 mSDsCounter, 0 mSdLazyCounter, 5922 mSolverCounterSat, 243 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 595 SdHoareTripleChecker+Valid, 3086 SdHoareTripleChecker+Invalid, 6165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 243 IncrementalHoareTripleChecker+Valid, 5922 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-02-24 00:31:33,542 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [595 Valid, 3086 Invalid, 6165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [243 Valid, 5922 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-02-24 00:31:33,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 936 states. [2022-02-24 00:31:33,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 936 to 800. [2022-02-24 00:31:33,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 800 states, 632 states have (on average 1.3132911392405062) internal successors, (830), 647 states have internal predecessors, (830), 94 states have call successors, (94), 53 states have call predecessors, (94), 73 states have return successors, (142), 106 states have call predecessors, (142), 88 states have call successors, (142) [2022-02-24 00:31:33,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 800 states to 800 states and 1066 transitions. [2022-02-24 00:31:33,648 INFO L78 Accepts]: Start accepts. Automaton has 800 states and 1066 transitions. Word has length 63 [2022-02-24 00:31:33,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 00:31:33,648 INFO L470 AbstractCegarLoop]: Abstraction has 800 states and 1066 transitions. [2022-02-24 00:31:33,648 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 2.473684210526316) internal successors, (47), 10 states have internal predecessors, (47), 4 states have call successors, (9), 9 states have call predecessors, (9), 4 states have return successors, (7), 5 states have call predecessors, (7), 3 states have call successors, (7) [2022-02-24 00:31:33,648 INFO L276 IsEmpty]: Start isEmpty. Operand 800 states and 1066 transitions. [2022-02-24 00:31:33,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-02-24 00:31:33,650 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 00:31:33,650 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 00:31:33,650 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-02-24 00:31:33,650 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 00:31:33,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 00:31:33,650 INFO L85 PathProgramCache]: Analyzing trace with hash -620638821, now seen corresponding path program 1 times [2022-02-24 00:31:33,650 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-24 00:31:33,651 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276332377] [2022-02-24 00:31:33,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 00:31:33,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 00:31:33,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:31:33,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 00:31:33,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:31:33,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 00:31:33,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:31:33,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-24 00:31:33,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:31:33,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-02-24 00:31:33,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:31:33,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-02-24 00:31:33,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:31:33,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-24 00:31:33,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:31:33,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-02-24 00:31:33,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:31:33,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 00:31:33,793 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-24 00:31:33,793 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276332377] [2022-02-24 00:31:33,793 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [276332377] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 00:31:33,793 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 00:31:33,793 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-02-24 00:31:33,793 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949680223] [2022-02-24 00:31:33,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 00:31:33,794 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-02-24 00:31:33,794 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-24 00:31:33,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-02-24 00:31:33,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-02-24 00:31:33,794 INFO L87 Difference]: Start difference. First operand 800 states and 1066 transitions. Second operand has 10 states, 10 states have (on average 4.7) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (9), 9 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-02-24 00:31:34,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 00:31:34,916 INFO L93 Difference]: Finished difference Result 1150 states and 1562 transitions. [2022-02-24 00:31:34,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-02-24 00:31:34,917 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.7) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (9), 9 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 63 [2022-02-24 00:31:34,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 00:31:34,919 INFO L225 Difference]: With dead ends: 1150 [2022-02-24 00:31:34,919 INFO L226 Difference]: Without dead ends: 797 [2022-02-24 00:31:34,920 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=66, Unknown=0, NotChecked=0, Total=110 [2022-02-24 00:31:34,920 INFO L933 BasicCegarLoop]: 511 mSDtfsCounter, 1131 mSDsluCounter, 579 mSDsCounter, 0 mSdLazyCounter, 902 mSolverCounterSat, 425 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1133 SdHoareTripleChecker+Valid, 1090 SdHoareTripleChecker+Invalid, 1327 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 425 IncrementalHoareTripleChecker+Valid, 902 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-02-24 00:31:34,921 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1133 Valid, 1090 Invalid, 1327 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [425 Valid, 902 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-02-24 00:31:34,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 797 states. [2022-02-24 00:31:35,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 797 to 692. [2022-02-24 00:31:35,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 692 states, 547 states have (on average 1.3053016453382085) internal successors, (714), 561 states have internal predecessors, (714), 82 states have call successors, (82), 47 states have call predecessors, (82), 62 states have return successors, (101), 90 states have call predecessors, (101), 76 states have call successors, (101) [2022-02-24 00:31:35,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 692 states to 692 states and 897 transitions. [2022-02-24 00:31:35,008 INFO L78 Accepts]: Start accepts. Automaton has 692 states and 897 transitions. Word has length 63 [2022-02-24 00:31:35,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 00:31:35,008 INFO L470 AbstractCegarLoop]: Abstraction has 692 states and 897 transitions. [2022-02-24 00:31:35,008 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.7) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (9), 9 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-02-24 00:31:35,008 INFO L276 IsEmpty]: Start isEmpty. Operand 692 states and 897 transitions. [2022-02-24 00:31:35,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-02-24 00:31:35,009 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 00:31:35,009 INFO L514 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] [2022-02-24 00:31:35,010 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-02-24 00:31:35,010 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 00:31:35,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 00:31:35,010 INFO L85 PathProgramCache]: Analyzing trace with hash -306718972, now seen corresponding path program 1 times [2022-02-24 00:31:35,010 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-24 00:31:35,010 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589029573] [2022-02-24 00:31:35,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 00:31:35,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 00:31:35,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:31:35,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 00:31:35,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:31:35,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 00:31:35,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:31:35,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-24 00:31:35,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:31:35,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-02-24 00:31:35,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:31:35,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 00:31:35,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:31:35,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-02-24 00:31:35,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:31:35,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-02-24 00:31:35,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:31:35,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 00:31:35,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:31:35,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 00:31:35,160 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-24 00:31:35,160 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589029573] [2022-02-24 00:31:35,160 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [589029573] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 00:31:35,160 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 00:31:35,160 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-02-24 00:31:35,161 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560709501] [2022-02-24 00:31:35,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 00:31:35,161 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-02-24 00:31:35,161 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-24 00:31:35,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-02-24 00:31:35,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-02-24 00:31:35,163 INFO L87 Difference]: Start difference. First operand 692 states and 897 transitions. Second operand has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (12), 8 states have call predecessors, (12), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2022-02-24 00:31:36,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 00:31:36,164 INFO L93 Difference]: Finished difference Result 882 states and 1167 transitions. [2022-02-24 00:31:36,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-02-24 00:31:36,164 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (12), 8 states have call predecessors, (12), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) Word has length 66 [2022-02-24 00:31:36,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 00:31:36,166 INFO L225 Difference]: With dead ends: 882 [2022-02-24 00:31:36,166 INFO L226 Difference]: Without dead ends: 762 [2022-02-24 00:31:36,167 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2022-02-24 00:31:36,167 INFO L933 BasicCegarLoop]: 475 mSDtfsCounter, 667 mSDsluCounter, 444 mSDsCounter, 0 mSdLazyCounter, 907 mSolverCounterSat, 243 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 678 SdHoareTripleChecker+Valid, 919 SdHoareTripleChecker+Invalid, 1150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 243 IncrementalHoareTripleChecker+Valid, 907 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-02-24 00:31:36,168 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [678 Valid, 919 Invalid, 1150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [243 Valid, 907 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-02-24 00:31:36,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 762 states. [2022-02-24 00:31:36,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 762 to 692. [2022-02-24 00:31:36,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 692 states, 547 states have (on average 1.3016453382084094) internal successors, (712), 561 states have internal predecessors, (712), 82 states have call successors, (82), 47 states have call predecessors, (82), 62 states have return successors, (101), 90 states have call predecessors, (101), 76 states have call successors, (101) [2022-02-24 00:31:36,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 692 states to 692 states and 895 transitions. [2022-02-24 00:31:36,235 INFO L78 Accepts]: Start accepts. Automaton has 692 states and 895 transitions. Word has length 66 [2022-02-24 00:31:36,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 00:31:36,236 INFO L470 AbstractCegarLoop]: Abstraction has 692 states and 895 transitions. [2022-02-24 00:31:36,236 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (12), 8 states have call predecessors, (12), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2022-02-24 00:31:36,236 INFO L276 IsEmpty]: Start isEmpty. Operand 692 states and 895 transitions. [2022-02-24 00:31:36,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-02-24 00:31:36,237 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 00:31:36,237 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 00:31:36,237 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2022-02-24 00:31:36,238 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 00:31:36,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 00:31:36,238 INFO L85 PathProgramCache]: Analyzing trace with hash 526937182, now seen corresponding path program 1 times [2022-02-24 00:31:36,238 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-24 00:31:36,238 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623087201] [2022-02-24 00:31:36,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 00:31:36,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 00:31:36,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:31:36,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 00:31:36,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:31:36,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 00:31:36,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:31:36,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-24 00:31:36,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:31:36,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-02-24 00:31:36,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:31:36,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-24 00:31:36,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:31:36,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-02-24 00:31:36,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:31:36,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-24 00:31:36,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:31:36,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-02-24 00:31:36,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:31:36,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 00:31:36,572 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-24 00:31:36,572 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623087201] [2022-02-24 00:31:36,573 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1623087201] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 00:31:36,573 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 00:31:36,573 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-02-24 00:31:36,573 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138493595] [2022-02-24 00:31:36,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 00:31:36,573 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-02-24 00:31:36,573 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-24 00:31:36,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-02-24 00:31:36,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=359, Unknown=0, NotChecked=0, Total=420 [2022-02-24 00:31:36,574 INFO L87 Difference]: Start difference. First operand 692 states and 895 transitions. Second operand has 21 states, 20 states have (on average 2.45) internal successors, (49), 10 states have internal predecessors, (49), 4 states have call successors, (10), 10 states have call predecessors, (10), 4 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) [2022-02-24 00:31:38,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 00:31:38,902 INFO L93 Difference]: Finished difference Result 786 states and 1032 transitions. [2022-02-24 00:31:38,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-02-24 00:31:38,902 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 2.45) internal successors, (49), 10 states have internal predecessors, (49), 4 states have call successors, (10), 10 states have call predecessors, (10), 4 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) Word has length 67 [2022-02-24 00:31:38,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 00:31:38,904 INFO L225 Difference]: With dead ends: 786 [2022-02-24 00:31:38,904 INFO L226 Difference]: Without dead ends: 761 [2022-02-24 00:31:38,904 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=120, Invalid=692, Unknown=0, NotChecked=0, Total=812 [2022-02-24 00:31:38,905 INFO L933 BasicCegarLoop]: 507 mSDtfsCounter, 886 mSDsluCounter, 2240 mSDsCounter, 0 mSdLazyCounter, 5122 mSolverCounterSat, 332 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 890 SdHoareTripleChecker+Valid, 2747 SdHoareTripleChecker+Invalid, 5454 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 332 IncrementalHoareTripleChecker+Valid, 5122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-02-24 00:31:38,905 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [890 Valid, 2747 Invalid, 5454 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [332 Valid, 5122 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-02-24 00:31:38,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 761 states. [2022-02-24 00:31:38,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 761 to 690. [2022-02-24 00:31:38,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 690 states, 546 states have (on average 1.3003663003663004) internal successors, (710), 560 states have internal predecessors, (710), 81 states have call successors, (81), 47 states have call predecessors, (81), 62 states have return successors, (100), 89 states have call predecessors, (100), 75 states have call successors, (100) [2022-02-24 00:31:38,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 690 states to 690 states and 891 transitions. [2022-02-24 00:31:38,964 INFO L78 Accepts]: Start accepts. Automaton has 690 states and 891 transitions. Word has length 67 [2022-02-24 00:31:38,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 00:31:38,965 INFO L470 AbstractCegarLoop]: Abstraction has 690 states and 891 transitions. [2022-02-24 00:31:38,965 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 2.45) internal successors, (49), 10 states have internal predecessors, (49), 4 states have call successors, (10), 10 states have call predecessors, (10), 4 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) [2022-02-24 00:31:38,965 INFO L276 IsEmpty]: Start isEmpty. Operand 690 states and 891 transitions. [2022-02-24 00:31:38,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-02-24 00:31:38,966 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 00:31:38,967 INFO L514 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] [2022-02-24 00:31:38,967 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2022-02-24 00:31:38,967 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 00:31:38,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 00:31:38,967 INFO L85 PathProgramCache]: Analyzing trace with hash 459314479, now seen corresponding path program 1 times [2022-02-24 00:31:38,967 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-24 00:31:38,967 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892478364] [2022-02-24 00:31:38,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 00:31:38,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 00:31:38,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:31:39,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 00:31:39,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:31:39,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 00:31:39,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:31:39,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-24 00:31:39,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:31:39,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-02-24 00:31:39,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:31:39,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-24 00:31:39,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:31:39,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-24 00:31:39,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:31:39,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-02-24 00:31:39,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:31:39,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-02-24 00:31:39,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:31:39,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 00:31:39,274 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-24 00:31:39,275 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892478364] [2022-02-24 00:31:39,275 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [892478364] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 00:31:39,275 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 00:31:39,275 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-02-24 00:31:39,275 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472563153] [2022-02-24 00:31:39,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 00:31:39,276 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-02-24 00:31:39,276 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-24 00:31:39,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-02-24 00:31:39,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=359, Unknown=0, NotChecked=0, Total=420 [2022-02-24 00:31:39,277 INFO L87 Difference]: Start difference. First operand 690 states and 891 transitions. Second operand has 21 states, 20 states have (on average 2.4) internal successors, (48), 10 states have internal predecessors, (48), 4 states have call successors, (10), 10 states have call predecessors, (10), 4 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) [2022-02-24 00:31:41,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 00:31:41,800 INFO L93 Difference]: Finished difference Result 781 states and 1023 transitions. [2022-02-24 00:31:41,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-02-24 00:31:41,800 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 2.4) internal successors, (48), 10 states have internal predecessors, (48), 4 states have call successors, (10), 10 states have call predecessors, (10), 4 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) Word has length 66 [2022-02-24 00:31:41,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 00:31:41,802 INFO L225 Difference]: With dead ends: 781 [2022-02-24 00:31:41,802 INFO L226 Difference]: Without dead ends: 756 [2022-02-24 00:31:41,803 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=120, Invalid=692, Unknown=0, NotChecked=0, Total=812 [2022-02-24 00:31:41,803 INFO L933 BasicCegarLoop]: 485 mSDtfsCounter, 1391 mSDsluCounter, 1978 mSDsCounter, 0 mSdLazyCounter, 5010 mSolverCounterSat, 523 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1394 SdHoareTripleChecker+Valid, 2463 SdHoareTripleChecker+Invalid, 5533 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 523 IncrementalHoareTripleChecker+Valid, 5010 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-02-24 00:31:41,803 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1394 Valid, 2463 Invalid, 5533 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [523 Valid, 5010 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-02-24 00:31:41,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 756 states. [2022-02-24 00:31:41,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 756 to 688. [2022-02-24 00:31:41,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 688 states, 545 states have (on average 1.2990825688073395) internal successors, (708), 559 states have internal predecessors, (708), 80 states have call successors, (80), 47 states have call predecessors, (80), 62 states have return successors, (99), 88 states have call predecessors, (99), 74 states have call successors, (99) [2022-02-24 00:31:41,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 688 states to 688 states and 887 transitions. [2022-02-24 00:31:41,863 INFO L78 Accepts]: Start accepts. Automaton has 688 states and 887 transitions. Word has length 66 [2022-02-24 00:31:41,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 00:31:41,863 INFO L470 AbstractCegarLoop]: Abstraction has 688 states and 887 transitions. [2022-02-24 00:31:41,863 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 2.4) internal successors, (48), 10 states have internal predecessors, (48), 4 states have call successors, (10), 10 states have call predecessors, (10), 4 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) [2022-02-24 00:31:41,863 INFO L276 IsEmpty]: Start isEmpty. Operand 688 states and 887 transitions. [2022-02-24 00:31:41,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-02-24 00:31:41,864 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 00:31:41,864 INFO L514 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] [2022-02-24 00:31:41,864 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2022-02-24 00:31:41,865 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 00:31:41,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 00:31:41,865 INFO L85 PathProgramCache]: Analyzing trace with hash 1659747958, now seen corresponding path program 1 times [2022-02-24 00:31:41,865 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-24 00:31:41,865 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493520660] [2022-02-24 00:31:41,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 00:31:41,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 00:31:41,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:31:41,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 00:31:41,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:31:41,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 00:31:41,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:31:41,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-24 00:31:41,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:31:41,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-02-24 00:31:41,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:31:42,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-02-24 00:31:42,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:31:42,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-02-24 00:31:42,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:31:42,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-02-24 00:31:42,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:31:42,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 00:31:42,078 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-24 00:31:42,078 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493520660] [2022-02-24 00:31:42,078 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [493520660] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 00:31:42,078 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 00:31:42,078 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-02-24 00:31:42,078 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010481662] [2022-02-24 00:31:42,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 00:31:42,078 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-02-24 00:31:42,078 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-24 00:31:42,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-02-24 00:31:42,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2022-02-24 00:31:42,079 INFO L87 Difference]: Start difference. First operand 688 states and 887 transitions. Second operand has 12 states, 12 states have (on average 4.083333333333333) internal successors, (49), 5 states have internal predecessors, (49), 3 states have call successors, (9), 9 states have call predecessors, (9), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-02-24 00:31:43,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 00:31:43,624 INFO L93 Difference]: Finished difference Result 820 states and 1069 transitions. [2022-02-24 00:31:43,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-02-24 00:31:43,624 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.083333333333333) internal successors, (49), 5 states have internal predecessors, (49), 3 states have call successors, (9), 9 states have call predecessors, (9), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 65 [2022-02-24 00:31:43,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 00:31:43,626 INFO L225 Difference]: With dead ends: 820 [2022-02-24 00:31:43,626 INFO L226 Difference]: Without dead ends: 787 [2022-02-24 00:31:43,627 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=138, Invalid=282, Unknown=0, NotChecked=0, Total=420 [2022-02-24 00:31:43,627 INFO L933 BasicCegarLoop]: 486 mSDtfsCounter, 738 mSDsluCounter, 683 mSDsCounter, 0 mSdLazyCounter, 1579 mSolverCounterSat, 246 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 741 SdHoareTripleChecker+Valid, 1169 SdHoareTripleChecker+Invalid, 1825 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 246 IncrementalHoareTripleChecker+Valid, 1579 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-02-24 00:31:43,628 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [741 Valid, 1169 Invalid, 1825 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [246 Valid, 1579 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-02-24 00:31:43,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 787 states. [2022-02-24 00:31:43,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 787 to 694. [2022-02-24 00:31:43,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 694 states, 550 states have (on average 1.298181818181818) internal successors, (714), 564 states have internal predecessors, (714), 81 states have call successors, (81), 47 states have call predecessors, (81), 62 states have return successors, (100), 89 states have call predecessors, (100), 75 states have call successors, (100) [2022-02-24 00:31:43,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 694 states to 694 states and 895 transitions. [2022-02-24 00:31:43,689 INFO L78 Accepts]: Start accepts. Automaton has 694 states and 895 transitions. Word has length 65 [2022-02-24 00:31:43,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 00:31:43,690 INFO L470 AbstractCegarLoop]: Abstraction has 694 states and 895 transitions. [2022-02-24 00:31:43,690 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.083333333333333) internal successors, (49), 5 states have internal predecessors, (49), 3 states have call successors, (9), 9 states have call predecessors, (9), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-02-24 00:31:43,690 INFO L276 IsEmpty]: Start isEmpty. Operand 694 states and 895 transitions. [2022-02-24 00:31:43,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-02-24 00:31:43,691 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 00:31:43,691 INFO L514 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] [2022-02-24 00:31:43,691 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2022-02-24 00:31:43,692 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 00:31:43,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 00:31:43,696 INFO L85 PathProgramCache]: Analyzing trace with hash -697612646, now seen corresponding path program 1 times [2022-02-24 00:31:43,696 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-24 00:31:43,696 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072490788] [2022-02-24 00:31:43,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 00:31:43,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 00:31:43,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:31:43,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 00:31:43,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:31:43,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 00:31:43,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:31:43,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-24 00:31:43,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:31:43,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-02-24 00:31:43,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:31:43,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-02-24 00:31:43,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:31:43,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-02-24 00:31:43,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:31:43,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-02-24 00:31:43,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:31:43,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 00:31:43,877 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-24 00:31:43,877 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072490788] [2022-02-24 00:31:43,877 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2072490788] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 00:31:43,877 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 00:31:43,877 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-02-24 00:31:43,877 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659115079] [2022-02-24 00:31:43,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 00:31:43,878 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-02-24 00:31:43,878 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-24 00:31:43,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-02-24 00:31:43,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2022-02-24 00:31:43,878 INFO L87 Difference]: Start difference. First operand 694 states and 895 transitions. Second operand has 12 states, 12 states have (on average 4.166666666666667) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-02-24 00:31:45,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 00:31:45,143 INFO L93 Difference]: Finished difference Result 818 states and 1062 transitions. [2022-02-24 00:31:45,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-02-24 00:31:45,144 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.166666666666667) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 66 [2022-02-24 00:31:45,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 00:31:45,146 INFO L225 Difference]: With dead ends: 818 [2022-02-24 00:31:45,146 INFO L226 Difference]: Without dead ends: 764 [2022-02-24 00:31:45,146 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=76, Invalid=164, Unknown=0, NotChecked=0, Total=240 [2022-02-24 00:31:45,147 INFO L933 BasicCegarLoop]: 492 mSDtfsCounter, 1382 mSDsluCounter, 774 mSDsCounter, 0 mSdLazyCounter, 1506 mSolverCounterSat, 510 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1384 SdHoareTripleChecker+Valid, 1266 SdHoareTripleChecker+Invalid, 2016 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 510 IncrementalHoareTripleChecker+Valid, 1506 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-02-24 00:31:45,147 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1384 Valid, 1266 Invalid, 2016 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [510 Valid, 1506 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-02-24 00:31:45,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 764 states. [2022-02-24 00:31:45,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 764 to 694. [2022-02-24 00:31:45,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 694 states, 550 states have (on average 1.2945454545454544) internal successors, (712), 564 states have internal predecessors, (712), 81 states have call successors, (81), 47 states have call predecessors, (81), 62 states have return successors, (100), 89 states have call predecessors, (100), 75 states have call successors, (100) [2022-02-24 00:31:45,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 694 states to 694 states and 893 transitions. [2022-02-24 00:31:45,235 INFO L78 Accepts]: Start accepts. Automaton has 694 states and 893 transitions. Word has length 66 [2022-02-24 00:31:45,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 00:31:45,235 INFO L470 AbstractCegarLoop]: Abstraction has 694 states and 893 transitions. [2022-02-24 00:31:45,235 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.166666666666667) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-02-24 00:31:45,235 INFO L276 IsEmpty]: Start isEmpty. Operand 694 states and 893 transitions. [2022-02-24 00:31:45,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-02-24 00:31:45,237 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 00:31:45,237 INFO L514 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] [2022-02-24 00:31:45,237 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2022-02-24 00:31:45,237 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 00:31:45,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 00:31:45,237 INFO L85 PathProgramCache]: Analyzing trace with hash -346812709, now seen corresponding path program 1 times [2022-02-24 00:31:45,238 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-24 00:31:45,238 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118505550] [2022-02-24 00:31:45,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 00:31:45,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 00:31:45,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:31:45,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 00:31:45,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:31:45,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 00:31:45,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:31:45,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-24 00:31:45,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:31:45,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-02-24 00:31:45,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:31:45,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-02-24 00:31:45,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:31:45,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-02-24 00:31:45,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:31:45,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-02-24 00:31:45,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:31:45,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 00:31:45,463 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-24 00:31:45,463 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118505550] [2022-02-24 00:31:45,464 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2118505550] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 00:31:45,464 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 00:31:45,464 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-02-24 00:31:45,464 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208290688] [2022-02-24 00:31:45,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 00:31:45,464 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-02-24 00:31:45,464 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-24 00:31:45,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-02-24 00:31:45,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2022-02-24 00:31:45,465 INFO L87 Difference]: Start difference. First operand 694 states and 893 transitions. Second operand has 16 states, 16 states have (on average 3.125) internal successors, (50), 7 states have internal predecessors, (50), 3 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 4 states have call predecessors, (7), 2 states have call successors, (7) [2022-02-24 00:31:47,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 00:31:47,294 INFO L93 Difference]: Finished difference Result 789 states and 1029 transitions. [2022-02-24 00:31:47,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-02-24 00:31:47,295 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.125) internal successors, (50), 7 states have internal predecessors, (50), 3 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 4 states have call predecessors, (7), 2 states have call successors, (7) Word has length 66 [2022-02-24 00:31:47,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 00:31:47,297 INFO L225 Difference]: With dead ends: 789 [2022-02-24 00:31:47,297 INFO L226 Difference]: Without dead ends: 712 [2022-02-24 00:31:47,297 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2022-02-24 00:31:47,299 INFO L933 BasicCegarLoop]: 499 mSDtfsCounter, 1151 mSDsluCounter, 1580 mSDsCounter, 0 mSdLazyCounter, 3590 mSolverCounterSat, 434 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1156 SdHoareTripleChecker+Valid, 2079 SdHoareTripleChecker+Invalid, 4024 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 434 IncrementalHoareTripleChecker+Valid, 3590 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-02-24 00:31:47,300 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1156 Valid, 2079 Invalid, 4024 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [434 Valid, 3590 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-02-24 00:31:47,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 712 states. [2022-02-24 00:31:47,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 712 to 657. [2022-02-24 00:31:47,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 657 states, 520 states have (on average 1.2807692307692307) internal successors, (666), 534 states have internal predecessors, (666), 74 states have call successors, (74), 47 states have call predecessors, (74), 62 states have return successors, (92), 82 states have call predecessors, (92), 68 states have call successors, (92) [2022-02-24 00:31:47,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 657 states to 657 states and 832 transitions. [2022-02-24 00:31:47,364 INFO L78 Accepts]: Start accepts. Automaton has 657 states and 832 transitions. Word has length 66 [2022-02-24 00:31:47,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 00:31:47,364 INFO L470 AbstractCegarLoop]: Abstraction has 657 states and 832 transitions. [2022-02-24 00:31:47,364 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.125) internal successors, (50), 7 states have internal predecessors, (50), 3 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 4 states have call predecessors, (7), 2 states have call successors, (7) [2022-02-24 00:31:47,364 INFO L276 IsEmpty]: Start isEmpty. Operand 657 states and 832 transitions. [2022-02-24 00:31:47,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-02-24 00:31:47,365 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 00:31:47,365 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 00:31:47,365 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2022-02-24 00:31:47,365 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 00:31:47,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 00:31:47,366 INFO L85 PathProgramCache]: Analyzing trace with hash 255041077, now seen corresponding path program 1 times [2022-02-24 00:31:47,366 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-24 00:31:47,366 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137851499] [2022-02-24 00:31:47,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 00:31:47,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 00:31:47,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:31:47,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 00:31:47,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:31:47,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 00:31:47,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:31:47,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-24 00:31:47,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:31:47,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-02-24 00:31:47,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:31:47,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-02-24 00:31:47,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:31:47,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-02-24 00:31:47,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:31:47,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-02-24 00:31:47,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:31:47,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 00:31:47,532 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-24 00:31:47,532 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137851499] [2022-02-24 00:31:47,532 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1137851499] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 00:31:47,532 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 00:31:47,532 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-02-24 00:31:47,532 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235276331] [2022-02-24 00:31:47,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 00:31:47,532 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-02-24 00:31:47,532 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-24 00:31:47,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-02-24 00:31:47,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-02-24 00:31:47,533 INFO L87 Difference]: Start difference. First operand 657 states and 832 transitions. Second operand has 10 states, 10 states have (on average 5.1) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (9), 9 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2022-02-24 00:31:48,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 00:31:48,743 INFO L93 Difference]: Finished difference Result 841 states and 1078 transitions. [2022-02-24 00:31:48,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-02-24 00:31:48,744 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.1) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (9), 9 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) Word has length 67 [2022-02-24 00:31:48,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 00:31:48,746 INFO L225 Difference]: With dead ends: 841 [2022-02-24 00:31:48,746 INFO L226 Difference]: Without dead ends: 829 [2022-02-24 00:31:48,746 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 10 SyntacticMatches, 3 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=58, Invalid=98, Unknown=0, NotChecked=0, Total=156 [2022-02-24 00:31:48,746 INFO L933 BasicCegarLoop]: 464 mSDtfsCounter, 479 mSDsluCounter, 445 mSDsCounter, 0 mSdLazyCounter, 1387 mSolverCounterSat, 161 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 493 SdHoareTripleChecker+Valid, 909 SdHoareTripleChecker+Invalid, 1548 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 161 IncrementalHoareTripleChecker+Valid, 1387 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-02-24 00:31:48,746 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [493 Valid, 909 Invalid, 1548 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [161 Valid, 1387 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-02-24 00:31:48,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 829 states. [2022-02-24 00:31:48,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 829 to 703. [2022-02-24 00:31:48,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 703 states, 556 states have (on average 1.2733812949640289) internal successors, (708), 572 states have internal predecessors, (708), 76 states have call successors, (76), 49 states have call predecessors, (76), 70 states have return successors, (100), 90 states have call predecessors, (100), 70 states have call successors, (100) [2022-02-24 00:31:48,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 703 states to 703 states and 884 transitions. [2022-02-24 00:31:48,809 INFO L78 Accepts]: Start accepts. Automaton has 703 states and 884 transitions. Word has length 67 [2022-02-24 00:31:48,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 00:31:48,810 INFO L470 AbstractCegarLoop]: Abstraction has 703 states and 884 transitions. [2022-02-24 00:31:48,810 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.1) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (9), 9 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2022-02-24 00:31:48,810 INFO L276 IsEmpty]: Start isEmpty. Operand 703 states and 884 transitions. [2022-02-24 00:31:48,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-02-24 00:31:48,811 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 00:31:48,811 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 00:31:48,811 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2022-02-24 00:31:48,811 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 00:31:48,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 00:31:48,811 INFO L85 PathProgramCache]: Analyzing trace with hash -2058592464, now seen corresponding path program 1 times [2022-02-24 00:31:48,811 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-24 00:31:48,811 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138692548] [2022-02-24 00:31:48,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 00:31:48,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 00:31:48,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:31:48,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 00:31:48,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:31:48,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 00:31:48,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:31:48,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-24 00:31:48,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:31:48,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-02-24 00:31:48,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:31:48,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-02-24 00:31:48,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:31:48,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-02-24 00:31:48,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:31:48,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-02-24 00:31:48,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:31:48,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 00:31:48,985 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-24 00:31:48,985 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138692548] [2022-02-24 00:31:48,986 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [138692548] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 00:31:48,986 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 00:31:48,986 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-02-24 00:31:48,986 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667455996] [2022-02-24 00:31:48,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 00:31:48,986 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-02-24 00:31:48,986 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-24 00:31:48,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-02-24 00:31:48,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2022-02-24 00:31:48,987 INFO L87 Difference]: Start difference. First operand 703 states and 884 transitions. Second operand has 12 states, 12 states have (on average 4.25) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-02-24 00:31:50,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 00:31:50,155 INFO L93 Difference]: Finished difference Result 786 states and 995 transitions. [2022-02-24 00:31:50,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-02-24 00:31:50,156 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.25) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 67 [2022-02-24 00:31:50,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 00:31:50,157 INFO L225 Difference]: With dead ends: 786 [2022-02-24 00:31:50,158 INFO L226 Difference]: Without dead ends: 747 [2022-02-24 00:31:50,158 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2022-02-24 00:31:50,159 INFO L933 BasicCegarLoop]: 439 mSDtfsCounter, 950 mSDsluCounter, 779 mSDsCounter, 0 mSdLazyCounter, 1456 mSolverCounterSat, 360 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 952 SdHoareTripleChecker+Valid, 1218 SdHoareTripleChecker+Invalid, 1816 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 360 IncrementalHoareTripleChecker+Valid, 1456 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-02-24 00:31:50,159 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [952 Valid, 1218 Invalid, 1816 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [360 Valid, 1456 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-02-24 00:31:50,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 747 states. [2022-02-24 00:31:50,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 747 to 698. [2022-02-24 00:31:50,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 698 states, 552 states have (on average 1.2735507246376812) internal successors, (703), 568 states have internal predecessors, (703), 75 states have call successors, (75), 49 states have call predecessors, (75), 70 states have return successors, (99), 89 states have call predecessors, (99), 69 states have call successors, (99) [2022-02-24 00:31:50,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 698 states to 698 states and 877 transitions. [2022-02-24 00:31:50,219 INFO L78 Accepts]: Start accepts. Automaton has 698 states and 877 transitions. Word has length 67 [2022-02-24 00:31:50,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 00:31:50,219 INFO L470 AbstractCegarLoop]: Abstraction has 698 states and 877 transitions. [2022-02-24 00:31:50,220 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.25) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-02-24 00:31:50,220 INFO L276 IsEmpty]: Start isEmpty. Operand 698 states and 877 transitions. [2022-02-24 00:31:50,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-02-24 00:31:50,221 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 00:31:50,221 INFO L514 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] [2022-02-24 00:31:50,221 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2022-02-24 00:31:50,221 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 00:31:50,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 00:31:50,221 INFO L85 PathProgramCache]: Analyzing trace with hash -238065346, now seen corresponding path program 1 times [2022-02-24 00:31:50,221 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-24 00:31:50,221 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288480952] [2022-02-24 00:31:50,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 00:31:50,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 00:31:50,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:31:50,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 00:31:50,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:31:50,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 00:31:50,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:31:50,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-24 00:31:50,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:31:50,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-02-24 00:31:50,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:31:50,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-02-24 00:31:50,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:31:50,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-02-24 00:31:50,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:31:50,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-02-24 00:31:50,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:31:50,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 00:31:50,384 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-24 00:31:50,384 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288480952] [2022-02-24 00:31:50,384 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1288480952] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 00:31:50,384 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 00:31:50,384 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-02-24 00:31:50,384 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994635825] [2022-02-24 00:31:50,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 00:31:50,384 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-02-24 00:31:50,385 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-24 00:31:50,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-02-24 00:31:50,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-02-24 00:31:50,385 INFO L87 Difference]: Start difference. First operand 698 states and 877 transitions. Second operand has 10 states, 10 states have (on average 5.2) internal successors, (52), 3 states have internal predecessors, (52), 2 states have call successors, (9), 9 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2022-02-24 00:31:51,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 00:31:51,301 INFO L93 Difference]: Finished difference Result 778 states and 992 transitions. [2022-02-24 00:31:51,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-02-24 00:31:51,301 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.2) internal successors, (52), 3 states have internal predecessors, (52), 2 states have call successors, (9), 9 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) Word has length 68 [2022-02-24 00:31:51,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 00:31:51,303 INFO L225 Difference]: With dead ends: 778 [2022-02-24 00:31:51,303 INFO L226 Difference]: Without dead ends: 733 [2022-02-24 00:31:51,303 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 9 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=58, Invalid=98, Unknown=0, NotChecked=0, Total=156 [2022-02-24 00:31:51,304 INFO L933 BasicCegarLoop]: 453 mSDtfsCounter, 1307 mSDsluCounter, 377 mSDsCounter, 0 mSdLazyCounter, 752 mSolverCounterSat, 465 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1323 SdHoareTripleChecker+Valid, 830 SdHoareTripleChecker+Invalid, 1217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 465 IncrementalHoareTripleChecker+Valid, 752 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-24 00:31:51,304 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1323 Valid, 830 Invalid, 1217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [465 Valid, 752 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-24 00:31:51,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 733 states. [2022-02-24 00:31:51,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 733 to 679. [2022-02-24 00:31:51,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 679 states, 538 states have (on average 1.2639405204460967) internal successors, (680), 553 states have internal predecessors, (680), 74 states have call successors, (74), 48 states have call predecessors, (74), 66 states have return successors, (95), 85 states have call predecessors, (95), 68 states have call successors, (95) [2022-02-24 00:31:51,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 679 states to 679 states and 849 transitions. [2022-02-24 00:31:51,361 INFO L78 Accepts]: Start accepts. Automaton has 679 states and 849 transitions. Word has length 68 [2022-02-24 00:31:51,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 00:31:51,361 INFO L470 AbstractCegarLoop]: Abstraction has 679 states and 849 transitions. [2022-02-24 00:31:51,361 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.2) internal successors, (52), 3 states have internal predecessors, (52), 2 states have call successors, (9), 9 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2022-02-24 00:31:51,361 INFO L276 IsEmpty]: Start isEmpty. Operand 679 states and 849 transitions. [2022-02-24 00:31:51,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-02-24 00:31:51,362 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 00:31:51,362 INFO L514 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] [2022-02-24 00:31:51,362 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2022-02-24 00:31:51,363 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 00:31:51,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 00:31:51,363 INFO L85 PathProgramCache]: Analyzing trace with hash -653091009, now seen corresponding path program 1 times [2022-02-24 00:31:51,363 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-24 00:31:51,363 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733835265] [2022-02-24 00:31:51,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 00:31:51,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 00:31:51,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:31:51,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 00:31:51,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:31:51,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 00:31:51,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:31:51,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-24 00:31:51,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:31:51,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-02-24 00:31:51,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:31:51,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-02-24 00:31:51,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:31:51,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-02-24 00:31:51,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:31:51,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-02-24 00:31:51,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:31:51,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 00:31:51,584 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-24 00:31:51,584 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733835265] [2022-02-24 00:31:51,584 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1733835265] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 00:31:51,584 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 00:31:51,584 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-02-24 00:31:51,584 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448425529] [2022-02-24 00:31:51,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 00:31:51,585 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-02-24 00:31:51,585 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-24 00:31:51,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-02-24 00:31:51,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2022-02-24 00:31:51,585 INFO L87 Difference]: Start difference. First operand 679 states and 849 transitions. Second operand has 12 states, 12 states have (on average 4.333333333333333) internal successors, (52), 5 states have internal predecessors, (52), 3 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 4 states have call predecessors, (7), 2 states have call successors, (7) [2022-02-24 00:31:52,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 00:31:52,987 INFO L93 Difference]: Finished difference Result 812 states and 1032 transitions. [2022-02-24 00:31:52,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-02-24 00:31:52,988 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.333333333333333) internal successors, (52), 5 states have internal predecessors, (52), 3 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 4 states have call predecessors, (7), 2 states have call successors, (7) Word has length 68 [2022-02-24 00:31:52,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 00:31:52,990 INFO L225 Difference]: With dead ends: 812 [2022-02-24 00:31:52,990 INFO L226 Difference]: Without dead ends: 803 [2022-02-24 00:31:52,991 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=113, Invalid=267, Unknown=0, NotChecked=0, Total=380 [2022-02-24 00:31:52,991 INFO L933 BasicCegarLoop]: 455 mSDtfsCounter, 1020 mSDsluCounter, 423 mSDsCounter, 0 mSdLazyCounter, 1371 mSolverCounterSat, 343 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1027 SdHoareTripleChecker+Valid, 878 SdHoareTripleChecker+Invalid, 1714 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 343 IncrementalHoareTripleChecker+Valid, 1371 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-02-24 00:31:52,991 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1027 Valid, 878 Invalid, 1714 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [343 Valid, 1371 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-02-24 00:31:52,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 803 states. [2022-02-24 00:31:53,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 803 to 679. [2022-02-24 00:31:53,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 679 states, 538 states have (on average 1.2602230483271375) internal successors, (678), 553 states have internal predecessors, (678), 74 states have call successors, (74), 48 states have call predecessors, (74), 66 states have return successors, (95), 85 states have call predecessors, (95), 68 states have call successors, (95) [2022-02-24 00:31:53,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 679 states to 679 states and 847 transitions. [2022-02-24 00:31:53,081 INFO L78 Accepts]: Start accepts. Automaton has 679 states and 847 transitions. Word has length 68 [2022-02-24 00:31:53,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 00:31:53,081 INFO L470 AbstractCegarLoop]: Abstraction has 679 states and 847 transitions. [2022-02-24 00:31:53,081 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.333333333333333) internal successors, (52), 5 states have internal predecessors, (52), 3 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 4 states have call predecessors, (7), 2 states have call successors, (7) [2022-02-24 00:31:53,081 INFO L276 IsEmpty]: Start isEmpty. Operand 679 states and 847 transitions. [2022-02-24 00:31:53,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-02-24 00:31:53,082 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 00:31:53,082 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 00:31:53,083 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2022-02-24 00:31:53,083 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 00:31:53,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 00:31:53,083 INFO L85 PathProgramCache]: Analyzing trace with hash -1034853120, now seen corresponding path program 1 times [2022-02-24 00:31:53,083 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-24 00:31:53,083 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154578096] [2022-02-24 00:31:53,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 00:31:53,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 00:31:53,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:31:53,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 00:31:53,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:31:53,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 00:31:53,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:31:53,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-24 00:31:53,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:31:53,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-02-24 00:31:53,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:31:53,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-24 00:31:53,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:31:53,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-24 00:31:53,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:31:53,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-02-24 00:31:53,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:31:53,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-02-24 00:31:53,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:31:53,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-02-24 00:31:53,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:31:53,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 00:31:53,384 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-24 00:31:53,384 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154578096] [2022-02-24 00:31:53,384 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1154578096] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 00:31:53,384 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 00:31:53,384 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-02-24 00:31:53,385 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077876637] [2022-02-24 00:31:53,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 00:31:53,385 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-02-24 00:31:53,385 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-24 00:31:53,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-02-24 00:31:53,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=359, Unknown=0, NotChecked=0, Total=420 [2022-02-24 00:31:53,386 INFO L87 Difference]: Start difference. First operand 679 states and 847 transitions. Second operand has 21 states, 20 states have (on average 2.7) internal successors, (54), 10 states have internal predecessors, (54), 4 states have call successors, (11), 10 states have call predecessors, (11), 4 states have return successors, (9), 5 states have call predecessors, (9), 3 states have call successors, (9) [2022-02-24 00:31:55,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 00:31:55,582 INFO L93 Difference]: Finished difference Result 768 states and 974 transitions. [2022-02-24 00:31:55,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-02-24 00:31:55,583 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 2.7) internal successors, (54), 10 states have internal predecessors, (54), 4 states have call successors, (11), 10 states have call predecessors, (11), 4 states have return successors, (9), 5 states have call predecessors, (9), 3 states have call successors, (9) Word has length 74 [2022-02-24 00:31:55,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 00:31:55,585 INFO L225 Difference]: With dead ends: 768 [2022-02-24 00:31:55,585 INFO L226 Difference]: Without dead ends: 743 [2022-02-24 00:31:55,586 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=120, Invalid=692, Unknown=0, NotChecked=0, Total=812 [2022-02-24 00:31:55,586 INFO L933 BasicCegarLoop]: 446 mSDtfsCounter, 765 mSDsluCounter, 2144 mSDsCounter, 0 mSdLazyCounter, 4384 mSolverCounterSat, 286 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 770 SdHoareTripleChecker+Valid, 2590 SdHoareTripleChecker+Invalid, 4670 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 286 IncrementalHoareTripleChecker+Valid, 4384 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-02-24 00:31:55,586 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [770 Valid, 2590 Invalid, 4670 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [286 Valid, 4384 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-02-24 00:31:55,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 743 states. [2022-02-24 00:31:55,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 743 to 677. [2022-02-24 00:31:55,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 677 states, 537 states have (on average 1.2588454376163873) internal successors, (676), 552 states have internal predecessors, (676), 73 states have call successors, (73), 48 states have call predecessors, (73), 66 states have return successors, (94), 84 states have call predecessors, (94), 67 states have call successors, (94) [2022-02-24 00:31:55,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 677 states to 677 states and 843 transitions. [2022-02-24 00:31:55,665 INFO L78 Accepts]: Start accepts. Automaton has 677 states and 843 transitions. Word has length 74 [2022-02-24 00:31:55,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 00:31:55,666 INFO L470 AbstractCegarLoop]: Abstraction has 677 states and 843 transitions. [2022-02-24 00:31:55,666 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 2.7) internal successors, (54), 10 states have internal predecessors, (54), 4 states have call successors, (11), 10 states have call predecessors, (11), 4 states have return successors, (9), 5 states have call predecessors, (9), 3 states have call successors, (9) [2022-02-24 00:31:55,666 INFO L276 IsEmpty]: Start isEmpty. Operand 677 states and 843 transitions. [2022-02-24 00:31:55,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-02-24 00:31:55,667 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 00:31:55,667 INFO L514 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] [2022-02-24 00:31:55,667 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2022-02-24 00:31:55,667 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 00:31:55,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 00:31:55,668 INFO L85 PathProgramCache]: Analyzing trace with hash -8057471, now seen corresponding path program 1 times [2022-02-24 00:31:55,668 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-24 00:31:55,668 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983345810] [2022-02-24 00:31:55,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 00:31:55,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 00:31:55,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:31:55,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 00:31:55,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:31:55,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 00:31:55,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:31:55,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-24 00:31:55,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:31:55,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-02-24 00:31:55,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:31:55,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-24 00:31:55,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:31:55,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-02-24 00:31:55,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:31:55,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-02-24 00:31:55,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:31:56,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-02-24 00:31:56,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:31:56,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 00:31:56,009 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-24 00:31:56,010 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983345810] [2022-02-24 00:31:56,010 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [983345810] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 00:31:56,010 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 00:31:56,010 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2022-02-24 00:31:56,010 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678253949] [2022-02-24 00:31:56,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 00:31:56,010 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-02-24 00:31:56,010 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-24 00:31:56,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-02-24 00:31:56,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=441, Unknown=0, NotChecked=0, Total=506 [2022-02-24 00:31:56,011 INFO L87 Difference]: Start difference. First operand 677 states and 843 transitions. Second operand has 23 states, 22 states have (on average 2.3636363636363638) internal successors, (52), 11 states have internal predecessors, (52), 4 states have call successors, (10), 10 states have call predecessors, (10), 5 states have return successors, (8), 6 states have call predecessors, (8), 3 states have call successors, (8) [2022-02-24 00:31:58,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 00:31:58,267 INFO L93 Difference]: Finished difference Result 749 states and 942 transitions. [2022-02-24 00:31:58,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-02-24 00:31:58,267 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 2.3636363636363638) internal successors, (52), 11 states have internal predecessors, (52), 4 states have call successors, (10), 10 states have call predecessors, (10), 5 states have return successors, (8), 6 states have call predecessors, (8), 3 states have call successors, (8) Word has length 70 [2022-02-24 00:31:58,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 00:31:58,269 INFO L225 Difference]: With dead ends: 749 [2022-02-24 00:31:58,269 INFO L226 Difference]: Without dead ends: 721 [2022-02-24 00:31:58,269 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=148, Invalid=908, Unknown=0, NotChecked=0, Total=1056 [2022-02-24 00:31:58,270 INFO L933 BasicCegarLoop]: 438 mSDtfsCounter, 733 mSDsluCounter, 2339 mSDsCounter, 0 mSdLazyCounter, 5041 mSolverCounterSat, 275 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 735 SdHoareTripleChecker+Valid, 2777 SdHoareTripleChecker+Invalid, 5316 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 275 IncrementalHoareTripleChecker+Valid, 5041 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-02-24 00:31:58,270 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [735 Valid, 2777 Invalid, 5316 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [275 Valid, 5041 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-02-24 00:31:58,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 721 states. [2022-02-24 00:31:58,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 721 to 673. [2022-02-24 00:31:58,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 673 states, 534 states have (on average 1.2584269662921348) internal successors, (672), 549 states have internal predecessors, (672), 72 states have call successors, (72), 48 states have call predecessors, (72), 66 states have return successors, (93), 83 states have call predecessors, (93), 66 states have call successors, (93) [2022-02-24 00:31:58,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 673 states to 673 states and 837 transitions. [2022-02-24 00:31:58,340 INFO L78 Accepts]: Start accepts. Automaton has 673 states and 837 transitions. Word has length 70 [2022-02-24 00:31:58,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 00:31:58,341 INFO L470 AbstractCegarLoop]: Abstraction has 673 states and 837 transitions. [2022-02-24 00:31:58,341 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 2.3636363636363638) internal successors, (52), 11 states have internal predecessors, (52), 4 states have call successors, (10), 10 states have call predecessors, (10), 5 states have return successors, (8), 6 states have call predecessors, (8), 3 states have call successors, (8) [2022-02-24 00:31:58,341 INFO L276 IsEmpty]: Start isEmpty. Operand 673 states and 837 transitions. [2022-02-24 00:31:58,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-02-24 00:31:58,342 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 00:31:58,342 INFO L514 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] [2022-02-24 00:31:58,342 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2022-02-24 00:31:58,343 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 00:31:58,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 00:31:58,343 INFO L85 PathProgramCache]: Analyzing trace with hash 300413188, now seen corresponding path program 1 times [2022-02-24 00:31:58,343 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-24 00:31:58,343 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394667976] [2022-02-24 00:31:58,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 00:31:58,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 00:31:58,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:31:58,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 00:31:58,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:31:58,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 00:31:58,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:31:58,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-24 00:31:58,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:31:58,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-02-24 00:31:58,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:31:58,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-02-24 00:31:58,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:31:58,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-02-24 00:31:58,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:31:58,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-02-24 00:31:58,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:31:58,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 00:31:58,537 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-24 00:31:58,537 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394667976] [2022-02-24 00:31:58,537 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1394667976] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 00:31:58,537 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 00:31:58,537 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-02-24 00:31:58,537 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587135697] [2022-02-24 00:31:58,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 00:31:58,537 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-02-24 00:31:58,537 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-24 00:31:58,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-02-24 00:31:58,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2022-02-24 00:31:58,538 INFO L87 Difference]: Start difference. First operand 673 states and 837 transitions. Second operand has 12 states, 12 states have (on average 4.416666666666667) internal successors, (53), 5 states have internal predecessors, (53), 3 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 4 states have call predecessors, (7), 2 states have call successors, (7) [2022-02-24 00:32:00,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 00:32:00,130 INFO L93 Difference]: Finished difference Result 800 states and 1011 transitions. [2022-02-24 00:32:00,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-02-24 00:32:00,130 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.416666666666667) internal successors, (53), 5 states have internal predecessors, (53), 3 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 4 states have call predecessors, (7), 2 states have call successors, (7) Word has length 69 [2022-02-24 00:32:00,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 00:32:00,132 INFO L225 Difference]: With dead ends: 800 [2022-02-24 00:32:00,132 INFO L226 Difference]: Without dead ends: 796 [2022-02-24 00:32:00,132 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=137, Invalid=325, Unknown=0, NotChecked=0, Total=462 [2022-02-24 00:32:00,132 INFO L933 BasicCegarLoop]: 446 mSDtfsCounter, 1448 mSDsluCounter, 498 mSDsCounter, 0 mSdLazyCounter, 1846 mSolverCounterSat, 503 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1455 SdHoareTripleChecker+Valid, 944 SdHoareTripleChecker+Invalid, 2349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 503 IncrementalHoareTripleChecker+Valid, 1846 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-02-24 00:32:00,133 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1455 Valid, 944 Invalid, 2349 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [503 Valid, 1846 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-02-24 00:32:00,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 796 states. [2022-02-24 00:32:00,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 796 to 671. [2022-02-24 00:32:00,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 671 states, 532 states have (on average 1.2575187969924813) internal successors, (669), 547 states have internal predecessors, (669), 72 states have call successors, (72), 48 states have call predecessors, (72), 66 states have return successors, (93), 83 states have call predecessors, (93), 66 states have call successors, (93) [2022-02-24 00:32:00,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 671 states to 671 states and 834 transitions. [2022-02-24 00:32:00,194 INFO L78 Accepts]: Start accepts. Automaton has 671 states and 834 transitions. Word has length 69 [2022-02-24 00:32:00,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 00:32:00,195 INFO L470 AbstractCegarLoop]: Abstraction has 671 states and 834 transitions. [2022-02-24 00:32:00,195 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.416666666666667) internal successors, (53), 5 states have internal predecessors, (53), 3 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 4 states have call predecessors, (7), 2 states have call successors, (7) [2022-02-24 00:32:00,195 INFO L276 IsEmpty]: Start isEmpty. Operand 671 states and 834 transitions. [2022-02-24 00:32:00,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-02-24 00:32:00,196 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 00:32:00,196 INFO L514 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] [2022-02-24 00:32:00,196 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2022-02-24 00:32:00,196 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 00:32:00,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 00:32:00,197 INFO L85 PathProgramCache]: Analyzing trace with hash 300444932, now seen corresponding path program 1 times [2022-02-24 00:32:00,197 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-24 00:32:00,197 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768720760] [2022-02-24 00:32:00,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 00:32:00,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 00:32:00,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:32:00,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 00:32:00,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:32:00,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 00:32:00,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:32:00,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-24 00:32:00,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:32:00,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-02-24 00:32:00,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:32:00,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-02-24 00:32:00,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:32:00,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-02-24 00:32:00,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:32:00,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-02-24 00:32:00,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:32:00,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 00:32:00,452 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-24 00:32:00,452 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768720760] [2022-02-24 00:32:00,452 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [768720760] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 00:32:00,452 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 00:32:00,452 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-02-24 00:32:00,452 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936285914] [2022-02-24 00:32:00,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 00:32:00,453 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-24 00:32:00,453 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-24 00:32:00,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-24 00:32:00,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=256, Unknown=0, NotChecked=0, Total=306 [2022-02-24 00:32:00,454 INFO L87 Difference]: Start difference. First operand 671 states and 834 transitions. Second operand has 18 states, 18 states have (on average 2.9444444444444446) internal successors, (53), 8 states have internal predecessors, (53), 2 states have call successors, (9), 9 states have call predecessors, (9), 4 states have return successors, (7), 4 states have call predecessors, (7), 1 states have call successors, (7) [2022-02-24 00:32:02,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 00:32:02,118 INFO L93 Difference]: Finished difference Result 729 states and 916 transitions. [2022-02-24 00:32:02,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-02-24 00:32:02,118 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.9444444444444446) internal successors, (53), 8 states have internal predecessors, (53), 2 states have call successors, (9), 9 states have call predecessors, (9), 4 states have return successors, (7), 4 states have call predecessors, (7), 1 states have call successors, (7) Word has length 69 [2022-02-24 00:32:02,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 00:32:02,120 INFO L225 Difference]: With dead ends: 729 [2022-02-24 00:32:02,120 INFO L226 Difference]: Without dead ends: 694 [2022-02-24 00:32:02,120 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=100, Invalid=656, Unknown=0, NotChecked=0, Total=756 [2022-02-24 00:32:02,121 INFO L933 BasicCegarLoop]: 387 mSDtfsCounter, 593 mSDsluCounter, 1196 mSDsCounter, 0 mSdLazyCounter, 3627 mSolverCounterSat, 207 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 606 SdHoareTripleChecker+Valid, 1583 SdHoareTripleChecker+Invalid, 3834 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 207 IncrementalHoareTripleChecker+Valid, 3627 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-02-24 00:32:02,121 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [606 Valid, 1583 Invalid, 3834 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [207 Valid, 3627 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-02-24 00:32:02,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 694 states. [2022-02-24 00:32:02,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 694 to 642. [2022-02-24 00:32:02,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 642 states, 508 states have (on average 1.2539370078740157) internal successors, (637), 522 states have internal predecessors, (637), 71 states have call successors, (71), 47 states have call predecessors, (71), 62 states have return successors, (89), 79 states have call predecessors, (89), 65 states have call successors, (89) [2022-02-24 00:32:02,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 797 transitions. [2022-02-24 00:32:02,206 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 797 transitions. Word has length 69 [2022-02-24 00:32:02,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 00:32:02,206 INFO L470 AbstractCegarLoop]: Abstraction has 642 states and 797 transitions. [2022-02-24 00:32:02,206 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.9444444444444446) internal successors, (53), 8 states have internal predecessors, (53), 2 states have call successors, (9), 9 states have call predecessors, (9), 4 states have return successors, (7), 4 states have call predecessors, (7), 1 states have call successors, (7) [2022-02-24 00:32:02,206 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 797 transitions. [2022-02-24 00:32:02,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-02-24 00:32:02,207 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 00:32:02,207 INFO L514 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] [2022-02-24 00:32:02,207 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2022-02-24 00:32:02,208 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 00:32:02,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 00:32:02,208 INFO L85 PathProgramCache]: Analyzing trace with hash 1365836196, now seen corresponding path program 1 times [2022-02-24 00:32:02,208 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-24 00:32:02,208 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205616612] [2022-02-24 00:32:02,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 00:32:02,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 00:32:02,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:32:02,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 00:32:02,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:32:02,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 00:32:02,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:32:02,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-24 00:32:02,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:32:02,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-02-24 00:32:02,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:32:02,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-02-24 00:32:02,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:32:02,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-02-24 00:32:02,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:32:02,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-02-24 00:32:02,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:32:02,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 00:32:02,380 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-24 00:32:02,380 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205616612] [2022-02-24 00:32:02,380 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [205616612] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 00:32:02,380 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 00:32:02,380 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-02-24 00:32:02,380 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063331817] [2022-02-24 00:32:02,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 00:32:02,381 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-02-24 00:32:02,381 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-24 00:32:02,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-02-24 00:32:02,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2022-02-24 00:32:02,381 INFO L87 Difference]: Start difference. First operand 642 states and 797 transitions. Second operand has 12 states, 12 states have (on average 4.416666666666667) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-02-24 00:32:03,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 00:32:03,406 INFO L93 Difference]: Finished difference Result 724 states and 905 transitions. [2022-02-24 00:32:03,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-02-24 00:32:03,406 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.416666666666667) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 69 [2022-02-24 00:32:03,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 00:32:03,408 INFO L225 Difference]: With dead ends: 724 [2022-02-24 00:32:03,408 INFO L226 Difference]: Without dead ends: 685 [2022-02-24 00:32:03,408 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2022-02-24 00:32:03,408 INFO L933 BasicCegarLoop]: 423 mSDtfsCounter, 906 mSDsluCounter, 746 mSDsCounter, 0 mSdLazyCounter, 1235 mSolverCounterSat, 336 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 908 SdHoareTripleChecker+Valid, 1169 SdHoareTripleChecker+Invalid, 1571 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 336 IncrementalHoareTripleChecker+Valid, 1235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-02-24 00:32:03,408 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [908 Valid, 1169 Invalid, 1571 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [336 Valid, 1235 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-02-24 00:32:03,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 685 states. [2022-02-24 00:32:03,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 685 to 637. [2022-02-24 00:32:03,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 637 states, 504 states have (on average 1.253968253968254) internal successors, (632), 518 states have internal predecessors, (632), 70 states have call successors, (70), 47 states have call predecessors, (70), 62 states have return successors, (88), 78 states have call predecessors, (88), 64 states have call successors, (88) [2022-02-24 00:32:03,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 637 states to 637 states and 790 transitions. [2022-02-24 00:32:03,468 INFO L78 Accepts]: Start accepts. Automaton has 637 states and 790 transitions. Word has length 69 [2022-02-24 00:32:03,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 00:32:03,468 INFO L470 AbstractCegarLoop]: Abstraction has 637 states and 790 transitions. [2022-02-24 00:32:03,468 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.416666666666667) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-02-24 00:32:03,468 INFO L276 IsEmpty]: Start isEmpty. Operand 637 states and 790 transitions. [2022-02-24 00:32:03,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-02-24 00:32:03,469 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 00:32:03,469 INFO L514 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] [2022-02-24 00:32:03,469 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2022-02-24 00:32:03,469 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 00:32:03,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 00:32:03,469 INFO L85 PathProgramCache]: Analyzing trace with hash -415492251, now seen corresponding path program 1 times [2022-02-24 00:32:03,469 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-24 00:32:03,469 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033107617] [2022-02-24 00:32:03,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 00:32:03,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 00:32:03,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:32:03,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 00:32:03,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:32:03,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 00:32:03,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:32:03,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-24 00:32:03,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:32:03,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-02-24 00:32:03,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:32:03,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-02-24 00:32:03,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:32:03,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-02-24 00:32:03,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:32:03,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-02-24 00:32:03,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:32:03,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 00:32:03,720 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-24 00:32:03,720 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033107617] [2022-02-24 00:32:03,720 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2033107617] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 00:32:03,720 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 00:32:03,720 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-02-24 00:32:03,720 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131859819] [2022-02-24 00:32:03,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 00:32:03,721 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-24 00:32:03,721 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-24 00:32:03,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-24 00:32:03,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=256, Unknown=0, NotChecked=0, Total=306 [2022-02-24 00:32:03,721 INFO L87 Difference]: Start difference. First operand 637 states and 790 transitions. Second operand has 18 states, 18 states have (on average 2.9444444444444446) internal successors, (53), 8 states have internal predecessors, (53), 3 states have call successors, (9), 9 states have call predecessors, (9), 4 states have return successors, (7), 5 states have call predecessors, (7), 2 states have call successors, (7) [2022-02-24 00:32:05,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 00:32:05,420 INFO L93 Difference]: Finished difference Result 712 states and 893 transitions. [2022-02-24 00:32:05,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-02-24 00:32:05,420 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.9444444444444446) internal successors, (53), 8 states have internal predecessors, (53), 3 states have call successors, (9), 9 states have call predecessors, (9), 4 states have return successors, (7), 5 states have call predecessors, (7), 2 states have call successors, (7) Word has length 69 [2022-02-24 00:32:05,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 00:32:05,421 INFO L225 Difference]: With dead ends: 712 [2022-02-24 00:32:05,421 INFO L226 Difference]: Without dead ends: 682 [2022-02-24 00:32:05,422 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=96, Invalid=456, Unknown=0, NotChecked=0, Total=552 [2022-02-24 00:32:05,422 INFO L933 BasicCegarLoop]: 438 mSDtfsCounter, 699 mSDsluCounter, 1647 mSDsCounter, 0 mSdLazyCounter, 3407 mSolverCounterSat, 252 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 702 SdHoareTripleChecker+Valid, 2085 SdHoareTripleChecker+Invalid, 3659 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 252 IncrementalHoareTripleChecker+Valid, 3407 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-02-24 00:32:05,422 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [702 Valid, 2085 Invalid, 3659 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [252 Valid, 3407 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-02-24 00:32:05,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 682 states. [2022-02-24 00:32:05,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 682 to 634. [2022-02-24 00:32:05,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 634 states, 502 states have (on average 1.252988047808765) internal successors, (629), 516 states have internal predecessors, (629), 69 states have call successors, (69), 47 states have call predecessors, (69), 62 states have return successors, (87), 77 states have call predecessors, (87), 63 states have call successors, (87) [2022-02-24 00:32:05,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 634 states to 634 states and 785 transitions. [2022-02-24 00:32:05,497 INFO L78 Accepts]: Start accepts. Automaton has 634 states and 785 transitions. Word has length 69 [2022-02-24 00:32:05,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 00:32:05,497 INFO L470 AbstractCegarLoop]: Abstraction has 634 states and 785 transitions. [2022-02-24 00:32:05,497 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.9444444444444446) internal successors, (53), 8 states have internal predecessors, (53), 3 states have call successors, (9), 9 states have call predecessors, (9), 4 states have return successors, (7), 5 states have call predecessors, (7), 2 states have call successors, (7) [2022-02-24 00:32:05,497 INFO L276 IsEmpty]: Start isEmpty. Operand 634 states and 785 transitions. [2022-02-24 00:32:05,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-02-24 00:32:05,498 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 00:32:05,498 INFO L514 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] [2022-02-24 00:32:05,498 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2022-02-24 00:32:05,498 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 00:32:05,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 00:32:05,498 INFO L85 PathProgramCache]: Analyzing trace with hash 135714178, now seen corresponding path program 1 times [2022-02-24 00:32:05,498 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-24 00:32:05,498 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754829138] [2022-02-24 00:32:05,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 00:32:05,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 00:32:05,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:32:05,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 00:32:05,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:32:05,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 00:32:05,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:32:05,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-24 00:32:05,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:32:05,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-02-24 00:32:05,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:32:05,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-24 00:32:05,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:32:05,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-02-24 00:32:05,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:32:05,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-02-24 00:32:05,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:32:05,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-02-24 00:32:05,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:32:05,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 00:32:05,681 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-24 00:32:05,681 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754829138] [2022-02-24 00:32:05,681 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [754829138] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 00:32:05,681 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 00:32:05,681 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-02-24 00:32:05,681 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605812945] [2022-02-24 00:32:05,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 00:32:05,681 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-02-24 00:32:05,681 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-24 00:32:05,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-02-24 00:32:05,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2022-02-24 00:32:05,682 INFO L87 Difference]: Start difference. First operand 634 states and 785 transitions. Second operand has 13 states, 13 states have (on average 4.076923076923077) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-02-24 00:32:06,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 00:32:06,655 INFO L93 Difference]: Finished difference Result 724 states and 902 transitions. [2022-02-24 00:32:06,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-02-24 00:32:06,655 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.076923076923077) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 71 [2022-02-24 00:32:06,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 00:32:06,656 INFO L225 Difference]: With dead ends: 724 [2022-02-24 00:32:06,656 INFO L226 Difference]: Without dead ends: 686 [2022-02-24 00:32:06,656 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2022-02-24 00:32:06,659 INFO L933 BasicCegarLoop]: 413 mSDtfsCounter, 1142 mSDsluCounter, 606 mSDsCounter, 0 mSdLazyCounter, 1149 mSolverCounterSat, 418 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1143 SdHoareTripleChecker+Valid, 1019 SdHoareTripleChecker+Invalid, 1567 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 418 IncrementalHoareTripleChecker+Valid, 1149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-02-24 00:32:06,659 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1143 Valid, 1019 Invalid, 1567 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [418 Valid, 1149 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-02-24 00:32:06,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 686 states. [2022-02-24 00:32:06,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 686 to 634. [2022-02-24 00:32:06,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 634 states, 502 states have (on average 1.250996015936255) internal successors, (628), 516 states have internal predecessors, (628), 69 states have call successors, (69), 47 states have call predecessors, (69), 62 states have return successors, (87), 77 states have call predecessors, (87), 63 states have call successors, (87) [2022-02-24 00:32:06,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 634 states to 634 states and 784 transitions. [2022-02-24 00:32:06,716 INFO L78 Accepts]: Start accepts. Automaton has 634 states and 784 transitions. Word has length 71 [2022-02-24 00:32:06,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 00:32:06,716 INFO L470 AbstractCegarLoop]: Abstraction has 634 states and 784 transitions. [2022-02-24 00:32:06,716 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.076923076923077) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-02-24 00:32:06,716 INFO L276 IsEmpty]: Start isEmpty. Operand 634 states and 784 transitions. [2022-02-24 00:32:06,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-02-24 00:32:06,717 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 00:32:06,717 INFO L514 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] [2022-02-24 00:32:06,717 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2022-02-24 00:32:06,717 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 00:32:06,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 00:32:06,717 INFO L85 PathProgramCache]: Analyzing trace with hash 1161206177, now seen corresponding path program 1 times [2022-02-24 00:32:06,717 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-24 00:32:06,717 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281977778] [2022-02-24 00:32:06,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 00:32:06,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 00:32:06,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:32:06,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 00:32:06,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:32:06,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 00:32:06,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:32:06,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-24 00:32:06,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:32:06,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-02-24 00:32:06,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:32:06,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-24 00:32:06,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:32:06,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-02-24 00:32:06,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:32:06,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-02-24 00:32:06,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:32:07,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-02-24 00:32:07,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:32:07,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 00:32:07,023 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-24 00:32:07,023 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281977778] [2022-02-24 00:32:07,023 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [281977778] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 00:32:07,023 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 00:32:07,024 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-02-24 00:32:07,024 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170322446] [2022-02-24 00:32:07,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 00:32:07,024 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-02-24 00:32:07,024 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-24 00:32:07,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-02-24 00:32:07,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=359, Unknown=0, NotChecked=0, Total=420 [2022-02-24 00:32:07,025 INFO L87 Difference]: Start difference. First operand 634 states and 784 transitions. Second operand has 21 states, 20 states have (on average 2.65) internal successors, (53), 10 states have internal predecessors, (53), 4 states have call successors, (10), 10 states have call predecessors, (10), 4 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) [2022-02-24 00:32:08,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 00:32:08,990 INFO L93 Difference]: Finished difference Result 722 states and 908 transitions. [2022-02-24 00:32:08,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-02-24 00:32:08,990 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 2.65) internal successors, (53), 10 states have internal predecessors, (53), 4 states have call successors, (10), 10 states have call predecessors, (10), 4 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) Word has length 71 [2022-02-24 00:32:08,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 00:32:08,991 INFO L225 Difference]: With dead ends: 722 [2022-02-24 00:32:08,991 INFO L226 Difference]: Without dead ends: 684 [2022-02-24 00:32:08,992 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=120, Invalid=692, Unknown=0, NotChecked=0, Total=812 [2022-02-24 00:32:08,992 INFO L933 BasicCegarLoop]: 422 mSDtfsCounter, 723 mSDsluCounter, 2020 mSDsCounter, 0 mSdLazyCounter, 4178 mSolverCounterSat, 271 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 727 SdHoareTripleChecker+Valid, 2442 SdHoareTripleChecker+Invalid, 4449 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 271 IncrementalHoareTripleChecker+Valid, 4178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-02-24 00:32:08,992 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [727 Valid, 2442 Invalid, 4449 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [271 Valid, 4178 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-02-24 00:32:08,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 684 states. [2022-02-24 00:32:09,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 684 to 629. [2022-02-24 00:32:09,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 629 states, 498 states have (on average 1.2469879518072289) internal successors, (621), 512 states have internal predecessors, (621), 68 states have call successors, (68), 47 states have call predecessors, (68), 62 states have return successors, (85), 76 states have call predecessors, (85), 62 states have call successors, (85) [2022-02-24 00:32:09,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 629 states to 629 states and 774 transitions. [2022-02-24 00:32:09,050 INFO L78 Accepts]: Start accepts. Automaton has 629 states and 774 transitions. Word has length 71 [2022-02-24 00:32:09,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 00:32:09,051 INFO L470 AbstractCegarLoop]: Abstraction has 629 states and 774 transitions. [2022-02-24 00:32:09,051 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 2.65) internal successors, (53), 10 states have internal predecessors, (53), 4 states have call successors, (10), 10 states have call predecessors, (10), 4 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) [2022-02-24 00:32:09,051 INFO L276 IsEmpty]: Start isEmpty. Operand 629 states and 774 transitions. [2022-02-24 00:32:09,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-02-24 00:32:09,052 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 00:32:09,052 INFO L514 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] [2022-02-24 00:32:09,052 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2022-02-24 00:32:09,052 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 00:32:09,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 00:32:09,052 INFO L85 PathProgramCache]: Analyzing trace with hash -1109131485, now seen corresponding path program 1 times [2022-02-24 00:32:09,052 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-24 00:32:09,052 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364021708] [2022-02-24 00:32:09,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 00:32:09,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 00:32:09,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:32:09,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 00:32:09,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:32:09,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 00:32:09,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:32:09,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-24 00:32:09,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:32:09,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-02-24 00:32:09,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:32:09,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-24 00:32:09,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:32:09,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-02-24 00:32:09,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:32:09,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-02-24 00:32:09,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:32:09,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-02-24 00:32:09,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:32:09,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 00:32:09,233 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-24 00:32:09,233 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364021708] [2022-02-24 00:32:09,233 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1364021708] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 00:32:09,233 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 00:32:09,234 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-02-24 00:32:09,234 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155517691] [2022-02-24 00:32:09,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 00:32:09,234 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-02-24 00:32:09,234 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-24 00:32:09,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-02-24 00:32:09,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2022-02-24 00:32:09,235 INFO L87 Difference]: Start difference. First operand 629 states and 774 transitions. Second operand has 13 states, 13 states have (on average 4.076923076923077) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-02-24 00:32:10,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 00:32:10,383 INFO L93 Difference]: Finished difference Result 717 states and 888 transitions. [2022-02-24 00:32:10,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-02-24 00:32:10,383 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.076923076923077) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 71 [2022-02-24 00:32:10,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 00:32:10,384 INFO L225 Difference]: With dead ends: 717 [2022-02-24 00:32:10,384 INFO L226 Difference]: Without dead ends: 673 [2022-02-24 00:32:10,385 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2022-02-24 00:32:10,385 INFO L933 BasicCegarLoop]: 402 mSDtfsCounter, 257 mSDsluCounter, 918 mSDsCounter, 0 mSdLazyCounter, 1624 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 258 SdHoareTripleChecker+Valid, 1320 SdHoareTripleChecker+Invalid, 1713 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 1624 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-02-24 00:32:10,385 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [258 Valid, 1320 Invalid, 1713 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 1624 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-02-24 00:32:10,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 673 states. [2022-02-24 00:32:10,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 673 to 623. [2022-02-24 00:32:10,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 623 states, 493 states have (on average 1.2474645030425964) internal successors, (615), 507 states have internal predecessors, (615), 67 states have call successors, (67), 47 states have call predecessors, (67), 62 states have return successors, (84), 75 states have call predecessors, (84), 61 states have call successors, (84) [2022-02-24 00:32:10,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 623 states to 623 states and 766 transitions. [2022-02-24 00:32:10,466 INFO L78 Accepts]: Start accepts. Automaton has 623 states and 766 transitions. Word has length 71 [2022-02-24 00:32:10,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 00:32:10,467 INFO L470 AbstractCegarLoop]: Abstraction has 623 states and 766 transitions. [2022-02-24 00:32:10,467 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.076923076923077) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-02-24 00:32:10,467 INFO L276 IsEmpty]: Start isEmpty. Operand 623 states and 766 transitions. [2022-02-24 00:32:10,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-02-24 00:32:10,468 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 00:32:10,468 INFO L514 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] [2022-02-24 00:32:10,468 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2022-02-24 00:32:10,468 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 00:32:10,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 00:32:10,469 INFO L85 PathProgramCache]: Analyzing trace with hash -1256769401, now seen corresponding path program 1 times [2022-02-24 00:32:10,469 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-24 00:32:10,469 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123295859] [2022-02-24 00:32:10,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 00:32:10,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 00:32:10,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:32:10,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 00:32:10,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:32:10,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 00:32:10,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:32:10,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-24 00:32:10,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:32:10,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-02-24 00:32:10,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:32:10,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-02-24 00:32:10,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:32:10,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-02-24 00:32:10,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:32:10,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-02-24 00:32:10,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:32:10,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 00:32:10,724 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-24 00:32:10,724 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123295859] [2022-02-24 00:32:10,724 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [123295859] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 00:32:10,724 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 00:32:10,725 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-02-24 00:32:10,725 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440215282] [2022-02-24 00:32:10,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 00:32:10,725 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-24 00:32:10,725 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-24 00:32:10,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-24 00:32:10,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=256, Unknown=0, NotChecked=0, Total=306 [2022-02-24 00:32:10,725 INFO L87 Difference]: Start difference. First operand 623 states and 766 transitions. Second operand has 18 states, 18 states have (on average 3.0555555555555554) internal successors, (55), 8 states have internal predecessors, (55), 2 states have call successors, (9), 9 states have call predecessors, (9), 4 states have return successors, (7), 4 states have call predecessors, (7), 1 states have call successors, (7) [2022-02-24 00:32:12,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 00:32:12,568 INFO L93 Difference]: Finished difference Result 854 states and 1053 transitions. [2022-02-24 00:32:12,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-02-24 00:32:12,568 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.0555555555555554) internal successors, (55), 8 states have internal predecessors, (55), 2 states have call successors, (9), 9 states have call predecessors, (9), 4 states have return successors, (7), 4 states have call predecessors, (7), 1 states have call successors, (7) Word has length 71 [2022-02-24 00:32:12,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 00:32:12,569 INFO L225 Difference]: With dead ends: 854 [2022-02-24 00:32:12,569 INFO L226 Difference]: Without dead ends: 715 [2022-02-24 00:32:12,570 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=112, Invalid=700, Unknown=0, NotChecked=0, Total=812 [2022-02-24 00:32:12,570 INFO L933 BasicCegarLoop]: 373 mSDtfsCounter, 956 mSDsluCounter, 1533 mSDsCounter, 0 mSdLazyCounter, 3698 mSolverCounterSat, 344 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 969 SdHoareTripleChecker+Valid, 1906 SdHoareTripleChecker+Invalid, 4042 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 344 IncrementalHoareTripleChecker+Valid, 3698 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-02-24 00:32:12,570 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [969 Valid, 1906 Invalid, 4042 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [344 Valid, 3698 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-02-24 00:32:12,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 715 states. [2022-02-24 00:32:12,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 715 to 629. [2022-02-24 00:32:12,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 629 states, 499 states have (on average 1.2364729458917836) internal successors, (617), 513 states have internal predecessors, (617), 67 states have call successors, (67), 47 states have call predecessors, (67), 62 states have return successors, (84), 75 states have call predecessors, (84), 61 states have call successors, (84) [2022-02-24 00:32:12,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 629 states to 629 states and 768 transitions. [2022-02-24 00:32:12,631 INFO L78 Accepts]: Start accepts. Automaton has 629 states and 768 transitions. Word has length 71 [2022-02-24 00:32:12,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 00:32:12,632 INFO L470 AbstractCegarLoop]: Abstraction has 629 states and 768 transitions. [2022-02-24 00:32:12,632 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.0555555555555554) internal successors, (55), 8 states have internal predecessors, (55), 2 states have call successors, (9), 9 states have call predecessors, (9), 4 states have return successors, (7), 4 states have call predecessors, (7), 1 states have call successors, (7) [2022-02-24 00:32:12,632 INFO L276 IsEmpty]: Start isEmpty. Operand 629 states and 768 transitions. [2022-02-24 00:32:12,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-02-24 00:32:12,633 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 00:32:12,633 INFO L514 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] [2022-02-24 00:32:12,633 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2022-02-24 00:32:12,633 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 00:32:12,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 00:32:12,633 INFO L85 PathProgramCache]: Analyzing trace with hash 958622839, now seen corresponding path program 1 times [2022-02-24 00:32:12,633 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-24 00:32:12,633 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50211023] [2022-02-24 00:32:12,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 00:32:12,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 00:32:12,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:32:12,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 00:32:12,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:32:12,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 00:32:12,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:32:12,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-24 00:32:12,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:32:12,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-02-24 00:32:12,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:32:12,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-24 00:32:12,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:32:12,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-02-24 00:32:12,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:32:12,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-02-24 00:32:12,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:32:12,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-02-24 00:32:12,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:32:12,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 00:32:12,802 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-24 00:32:12,802 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50211023] [2022-02-24 00:32:12,802 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [50211023] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 00:32:12,802 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 00:32:12,802 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-02-24 00:32:12,802 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257413230] [2022-02-24 00:32:12,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 00:32:12,803 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-02-24 00:32:12,803 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-24 00:32:12,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-02-24 00:32:12,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2022-02-24 00:32:12,803 INFO L87 Difference]: Start difference. First operand 629 states and 768 transitions. Second operand has 13 states, 13 states have (on average 4.230769230769231) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-02-24 00:32:13,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 00:32:13,703 INFO L93 Difference]: Finished difference Result 717 states and 882 transitions. [2022-02-24 00:32:13,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-02-24 00:32:13,704 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.230769230769231) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 73 [2022-02-24 00:32:13,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 00:32:13,705 INFO L225 Difference]: With dead ends: 717 [2022-02-24 00:32:13,705 INFO L226 Difference]: Without dead ends: 667 [2022-02-24 00:32:13,705 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2022-02-24 00:32:13,706 INFO L933 BasicCegarLoop]: 393 mSDtfsCounter, 658 mSDsluCounter, 606 mSDsCounter, 0 mSdLazyCounter, 1093 mSolverCounterSat, 242 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 659 SdHoareTripleChecker+Valid, 999 SdHoareTripleChecker+Invalid, 1335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 242 IncrementalHoareTripleChecker+Valid, 1093 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-24 00:32:13,706 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [659 Valid, 999 Invalid, 1335 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [242 Valid, 1093 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-24 00:32:13,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 667 states. [2022-02-24 00:32:13,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 667 to 617. [2022-02-24 00:32:13,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 617 states, 488 states have (on average 1.2315573770491803) internal successors, (601), 502 states have internal predecessors, (601), 66 states have call successors, (66), 47 states have call predecessors, (66), 62 states have return successors, (83), 74 states have call predecessors, (83), 60 states have call successors, (83) [2022-02-24 00:32:13,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 617 states to 617 states and 750 transitions. [2022-02-24 00:32:13,771 INFO L78 Accepts]: Start accepts. Automaton has 617 states and 750 transitions. Word has length 73 [2022-02-24 00:32:13,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 00:32:13,772 INFO L470 AbstractCegarLoop]: Abstraction has 617 states and 750 transitions. [2022-02-24 00:32:13,772 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.230769230769231) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-02-24 00:32:13,772 INFO L276 IsEmpty]: Start isEmpty. Operand 617 states and 750 transitions. [2022-02-24 00:32:13,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-02-24 00:32:13,773 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 00:32:13,773 INFO L514 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] [2022-02-24 00:32:13,773 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2022-02-24 00:32:13,773 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 00:32:13,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 00:32:13,773 INFO L85 PathProgramCache]: Analyzing trace with hash 1514534938, now seen corresponding path program 1 times [2022-02-24 00:32:13,773 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-24 00:32:13,773 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379517144] [2022-02-24 00:32:13,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 00:32:13,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 00:32:13,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:32:13,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 00:32:13,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:32:13,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 00:32:13,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:32:13,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-24 00:32:13,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:32:13,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-02-24 00:32:13,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:32:13,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-02-24 00:32:13,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:32:13,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-02-24 00:32:13,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:32:14,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-02-24 00:32:14,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:32:14,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-02-24 00:32:14,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:32:14,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 00:32:14,060 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-24 00:32:14,060 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379517144] [2022-02-24 00:32:14,061 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1379517144] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 00:32:14,061 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 00:32:14,061 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-02-24 00:32:14,061 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639538478] [2022-02-24 00:32:14,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 00:32:14,061 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-02-24 00:32:14,061 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-24 00:32:14,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-02-24 00:32:14,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=276, Unknown=0, NotChecked=0, Total=342 [2022-02-24 00:32:14,062 INFO L87 Difference]: Start difference. First operand 617 states and 750 transitions. Second operand has 19 states, 19 states have (on average 2.8947368421052633) internal successors, (55), 10 states have internal predecessors, (55), 5 states have call successors, (10), 10 states have call predecessors, (10), 4 states have return successors, (8), 6 states have call predecessors, (8), 4 states have call successors, (8) [2022-02-24 00:32:17,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 00:32:17,784 INFO L93 Difference]: Finished difference Result 1504 states and 1836 transitions. [2022-02-24 00:32:17,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-02-24 00:32:17,785 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.8947368421052633) internal successors, (55), 10 states have internal predecessors, (55), 5 states have call successors, (10), 10 states have call predecessors, (10), 4 states have return successors, (8), 6 states have call predecessors, (8), 4 states have call successors, (8) Word has length 73 [2022-02-24 00:32:17,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 00:32:17,787 INFO L225 Difference]: With dead ends: 1504 [2022-02-24 00:32:17,787 INFO L226 Difference]: Without dead ends: 1357 [2022-02-24 00:32:17,788 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 749 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=676, Invalid=2630, Unknown=0, NotChecked=0, Total=3306 [2022-02-24 00:32:17,788 INFO L933 BasicCegarLoop]: 412 mSDtfsCounter, 3376 mSDsluCounter, 1090 mSDsCounter, 0 mSdLazyCounter, 4421 mSolverCounterSat, 1144 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3381 SdHoareTripleChecker+Valid, 1502 SdHoareTripleChecker+Invalid, 5565 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1144 IncrementalHoareTripleChecker+Valid, 4421 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-02-24 00:32:17,789 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3381 Valid, 1502 Invalid, 5565 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1144 Valid, 4421 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-02-24 00:32:17,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1357 states. [2022-02-24 00:32:17,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1357 to 978. [2022-02-24 00:32:17,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 978 states, 777 states have (on average 1.250965250965251) internal successors, (972), 800 states have internal predecessors, (972), 101 states have call successors, (101), 77 states have call predecessors, (101), 99 states have return successors, (132), 107 states have call predecessors, (132), 95 states have call successors, (132) [2022-02-24 00:32:17,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 978 states to 978 states and 1205 transitions. [2022-02-24 00:32:17,899 INFO L78 Accepts]: Start accepts. Automaton has 978 states and 1205 transitions. Word has length 73 [2022-02-24 00:32:17,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 00:32:17,899 INFO L470 AbstractCegarLoop]: Abstraction has 978 states and 1205 transitions. [2022-02-24 00:32:17,899 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.8947368421052633) internal successors, (55), 10 states have internal predecessors, (55), 5 states have call successors, (10), 10 states have call predecessors, (10), 4 states have return successors, (8), 6 states have call predecessors, (8), 4 states have call successors, (8) [2022-02-24 00:32:17,899 INFO L276 IsEmpty]: Start isEmpty. Operand 978 states and 1205 transitions. [2022-02-24 00:32:17,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-02-24 00:32:17,900 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 00:32:17,901 INFO L514 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] [2022-02-24 00:32:17,901 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2022-02-24 00:32:17,901 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 00:32:17,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 00:32:17,901 INFO L85 PathProgramCache]: Analyzing trace with hash 100059264, now seen corresponding path program 1 times [2022-02-24 00:32:17,901 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-24 00:32:17,901 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101226197] [2022-02-24 00:32:17,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 00:32:17,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 00:32:17,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:32:17,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 00:32:17,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:32:17,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 00:32:17,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:32:18,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-24 00:32:18,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:32:18,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-02-24 00:32:18,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:32:18,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-02-24 00:32:18,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:32:18,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-02-24 00:32:18,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:32:18,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-02-24 00:32:18,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:32:18,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-02-24 00:32:18,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:32:18,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 00:32:18,181 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-24 00:32:18,182 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101226197] [2022-02-24 00:32:18,182 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2101226197] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 00:32:18,182 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 00:32:18,182 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-02-24 00:32:18,182 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058553773] [2022-02-24 00:32:18,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 00:32:18,182 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-02-24 00:32:18,182 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-24 00:32:18,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-02-24 00:32:18,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=327, Unknown=0, NotChecked=0, Total=380 [2022-02-24 00:32:18,183 INFO L87 Difference]: Start difference. First operand 978 states and 1205 transitions. Second operand has 20 states, 20 states have (on average 3.05) internal successors, (61), 9 states have internal predecessors, (61), 2 states have call successors, (10), 9 states have call predecessors, (10), 5 states have return successors, (8), 5 states have call predecessors, (8), 1 states have call successors, (8) [2022-02-24 00:32:19,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 00:32:19,847 INFO L93 Difference]: Finished difference Result 1080 states and 1346 transitions. [2022-02-24 00:32:19,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-02-24 00:32:19,847 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.05) internal successors, (61), 9 states have internal predecessors, (61), 2 states have call successors, (10), 9 states have call predecessors, (10), 5 states have return successors, (8), 5 states have call predecessors, (8), 1 states have call successors, (8) Word has length 79 [2022-02-24 00:32:19,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 00:32:19,849 INFO L225 Difference]: With dead ends: 1080 [2022-02-24 00:32:19,849 INFO L226 Difference]: Without dead ends: 1038 [2022-02-24 00:32:19,849 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=61, Invalid=401, Unknown=0, NotChecked=0, Total=462 [2022-02-24 00:32:19,850 INFO L933 BasicCegarLoop]: 393 mSDtfsCounter, 383 mSDsluCounter, 2031 mSDsCounter, 0 mSdLazyCounter, 3882 mSolverCounterSat, 153 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 386 SdHoareTripleChecker+Valid, 2424 SdHoareTripleChecker+Invalid, 4035 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 153 IncrementalHoareTripleChecker+Valid, 3882 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-02-24 00:32:19,850 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [386 Valid, 2424 Invalid, 4035 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [153 Valid, 3882 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-02-24 00:32:19,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1038 states. [2022-02-24 00:32:19,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1038 to 968. [2022-02-24 00:32:19,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 968 states, 771 states have (on average 1.2503242542153048) internal successors, (964), 794 states have internal predecessors, (964), 97 states have call successors, (97), 77 states have call predecessors, (97), 99 states have return successors, (128), 103 states have call predecessors, (128), 91 states have call successors, (128) [2022-02-24 00:32:19,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 968 states to 968 states and 1189 transitions. [2022-02-24 00:32:19,993 INFO L78 Accepts]: Start accepts. Automaton has 968 states and 1189 transitions. Word has length 79 [2022-02-24 00:32:19,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 00:32:19,993 INFO L470 AbstractCegarLoop]: Abstraction has 968 states and 1189 transitions. [2022-02-24 00:32:19,993 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.05) internal successors, (61), 9 states have internal predecessors, (61), 2 states have call successors, (10), 9 states have call predecessors, (10), 5 states have return successors, (8), 5 states have call predecessors, (8), 1 states have call successors, (8) [2022-02-24 00:32:19,993 INFO L276 IsEmpty]: Start isEmpty. Operand 968 states and 1189 transitions. [2022-02-24 00:32:19,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-02-24 00:32:19,995 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 00:32:19,995 INFO L514 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] [2022-02-24 00:32:19,995 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2022-02-24 00:32:19,995 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 00:32:19,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 00:32:19,996 INFO L85 PathProgramCache]: Analyzing trace with hash 226042889, now seen corresponding path program 1 times [2022-02-24 00:32:19,996 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-24 00:32:19,996 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43272710] [2022-02-24 00:32:19,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 00:32:19,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 00:32:20,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:32:20,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 00:32:20,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:32:20,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 00:32:20,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:32:20,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-24 00:32:20,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:32:20,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-02-24 00:32:20,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:32:20,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-02-24 00:32:20,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:32:20,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-02-24 00:32:20,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:32:20,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-02-24 00:32:20,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:32:20,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 00:32:20,308 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-24 00:32:20,308 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [43272710] [2022-02-24 00:32:20,308 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [43272710] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 00:32:20,308 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 00:32:20,309 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-02-24 00:32:20,309 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683916641] [2022-02-24 00:32:20,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 00:32:20,309 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-02-24 00:32:20,309 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-24 00:32:20,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-02-24 00:32:20,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=296, Unknown=0, NotChecked=0, Total=342 [2022-02-24 00:32:20,310 INFO L87 Difference]: Start difference. First operand 968 states and 1189 transitions. Second operand has 19 states, 19 states have (on average 2.9473684210526314) internal successors, (56), 9 states have internal predecessors, (56), 2 states have call successors, (9), 8 states have call predecessors, (9), 5 states have return successors, (7), 5 states have call predecessors, (7), 1 states have call successors, (7) [2022-02-24 00:32:22,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 00:32:22,261 INFO L93 Difference]: Finished difference Result 1040 states and 1294 transitions. [2022-02-24 00:32:22,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-02-24 00:32:22,261 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.9473684210526314) internal successors, (56), 9 states have internal predecessors, (56), 2 states have call successors, (9), 8 states have call predecessors, (9), 5 states have return successors, (7), 5 states have call predecessors, (7), 1 states have call successors, (7) Word has length 72 [2022-02-24 00:32:22,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 00:32:22,263 INFO L225 Difference]: With dead ends: 1040 [2022-02-24 00:32:22,263 INFO L226 Difference]: Without dead ends: 955 [2022-02-24 00:32:22,263 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=54, Invalid=366, Unknown=0, NotChecked=0, Total=420 [2022-02-24 00:32:22,264 INFO L933 BasicCegarLoop]: 373 mSDtfsCounter, 184 mSDsluCounter, 1892 mSDsCounter, 0 mSdLazyCounter, 4171 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 186 SdHoareTripleChecker+Valid, 2265 SdHoareTripleChecker+Invalid, 4242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 4171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-02-24 00:32:22,264 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [186 Valid, 2265 Invalid, 4242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 4171 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-02-24 00:32:22,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 955 states. [2022-02-24 00:32:22,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 955 to 876. [2022-02-24 00:32:22,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 876 states, 695 states have (on average 1.260431654676259) internal successors, (876), 715 states have internal predecessors, (876), 90 states have call successors, (90), 71 states have call predecessors, (90), 90 states have return successors, (118), 95 states have call predecessors, (118), 85 states have call successors, (118) [2022-02-24 00:32:22,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 876 states to 876 states and 1084 transitions. [2022-02-24 00:32:22,362 INFO L78 Accepts]: Start accepts. Automaton has 876 states and 1084 transitions. Word has length 72 [2022-02-24 00:32:22,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 00:32:22,362 INFO L470 AbstractCegarLoop]: Abstraction has 876 states and 1084 transitions. [2022-02-24 00:32:22,362 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.9473684210526314) internal successors, (56), 9 states have internal predecessors, (56), 2 states have call successors, (9), 8 states have call predecessors, (9), 5 states have return successors, (7), 5 states have call predecessors, (7), 1 states have call successors, (7) [2022-02-24 00:32:22,362 INFO L276 IsEmpty]: Start isEmpty. Operand 876 states and 1084 transitions. [2022-02-24 00:32:22,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-02-24 00:32:22,364 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 00:32:22,364 INFO L514 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] [2022-02-24 00:32:22,364 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2022-02-24 00:32:22,364 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 00:32:22,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 00:32:22,364 INFO L85 PathProgramCache]: Analyzing trace with hash -293312583, now seen corresponding path program 1 times [2022-02-24 00:32:22,364 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-24 00:32:22,364 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984536873] [2022-02-24 00:32:22,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 00:32:22,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 00:32:22,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:32:22,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 00:32:22,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:32:22,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 00:32:22,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:32:22,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-24 00:32:22,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:32:22,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-02-24 00:32:22,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:32:22,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-02-24 00:32:22,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:32:22,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-02-24 00:32:22,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:32:22,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-02-24 00:32:22,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:32:22,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-02-24 00:32:22,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:32:22,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 00:32:22,569 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-24 00:32:22,569 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984536873] [2022-02-24 00:32:22,569 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [984536873] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 00:32:22,569 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 00:32:22,569 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-02-24 00:32:22,569 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728768290] [2022-02-24 00:32:22,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 00:32:22,569 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-02-24 00:32:22,569 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-24 00:32:22,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-02-24 00:32:22,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2022-02-24 00:32:22,569 INFO L87 Difference]: Start difference. First operand 876 states and 1084 transitions. Second operand has 14 states, 14 states have (on average 3.9285714285714284) internal successors, (55), 6 states have internal predecessors, (55), 5 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2022-02-24 00:32:24,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 00:32:24,628 INFO L93 Difference]: Finished difference Result 1263 states and 1556 transitions. [2022-02-24 00:32:24,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-02-24 00:32:24,629 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.9285714285714284) internal successors, (55), 6 states have internal predecessors, (55), 5 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) Word has length 73 [2022-02-24 00:32:24,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 00:32:24,630 INFO L225 Difference]: With dead ends: 1263 [2022-02-24 00:32:24,630 INFO L226 Difference]: Without dead ends: 1133 [2022-02-24 00:32:24,631 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=199, Invalid=613, Unknown=0, NotChecked=0, Total=812 [2022-02-24 00:32:24,631 INFO L933 BasicCegarLoop]: 635 mSDtfsCounter, 1953 mSDsluCounter, 951 mSDsCounter, 0 mSdLazyCounter, 2391 mSolverCounterSat, 604 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1957 SdHoareTripleChecker+Valid, 1586 SdHoareTripleChecker+Invalid, 2995 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 604 IncrementalHoareTripleChecker+Valid, 2391 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-02-24 00:32:24,631 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1957 Valid, 1586 Invalid, 2995 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [604 Valid, 2391 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-02-24 00:32:24,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1133 states. [2022-02-24 00:32:24,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1133 to 978. [2022-02-24 00:32:24,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 978 states, 776 states have (on average 1.2487113402061856) internal successors, (969), 791 states have internal predecessors, (969), 105 states have call successors, (105), 76 states have call predecessors, (105), 96 states have return successors, (135), 114 states have call predecessors, (135), 100 states have call successors, (135) [2022-02-24 00:32:24,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 978 states to 978 states and 1209 transitions. [2022-02-24 00:32:24,741 INFO L78 Accepts]: Start accepts. Automaton has 978 states and 1209 transitions. Word has length 73 [2022-02-24 00:32:24,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 00:32:24,741 INFO L470 AbstractCegarLoop]: Abstraction has 978 states and 1209 transitions. [2022-02-24 00:32:24,741 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.9285714285714284) internal successors, (55), 6 states have internal predecessors, (55), 5 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2022-02-24 00:32:24,741 INFO L276 IsEmpty]: Start isEmpty. Operand 978 states and 1209 transitions. [2022-02-24 00:32:24,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-02-24 00:32:24,743 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 00:32:24,743 INFO L514 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] [2022-02-24 00:32:24,743 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2022-02-24 00:32:24,743 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 00:32:24,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 00:32:24,743 INFO L85 PathProgramCache]: Analyzing trace with hash -7999414, now seen corresponding path program 1 times [2022-02-24 00:32:24,743 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-24 00:32:24,744 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20438436] [2022-02-24 00:32:24,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 00:32:24,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 00:32:24,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:32:24,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 00:32:24,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:32:24,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 00:32:24,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:32:24,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-24 00:32:24,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:32:24,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-02-24 00:32:24,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:32:24,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-24 00:32:24,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:32:24,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-24 00:32:24,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:32:24,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-02-24 00:32:24,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:32:24,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-02-24 00:32:24,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:32:24,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-02-24 00:32:24,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:32:24,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 00:32:24,962 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-24 00:32:24,962 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20438436] [2022-02-24 00:32:24,962 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [20438436] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 00:32:24,963 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 00:32:24,963 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-02-24 00:32:24,963 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444852307] [2022-02-24 00:32:24,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 00:32:24,963 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-02-24 00:32:24,963 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-24 00:32:24,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-02-24 00:32:24,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2022-02-24 00:32:24,964 INFO L87 Difference]: Start difference. First operand 978 states and 1209 transitions. Second operand has 15 states, 15 states have (on average 3.6666666666666665) internal successors, (55), 5 states have internal predecessors, (55), 2 states have call successors, (11), 10 states have call predecessors, (11), 3 states have return successors, (9), 4 states have call predecessors, (9), 2 states have call successors, (9) [2022-02-24 00:32:26,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 00:32:26,130 INFO L93 Difference]: Finished difference Result 1123 states and 1401 transitions. [2022-02-24 00:32:26,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-02-24 00:32:26,130 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.6666666666666665) internal successors, (55), 5 states have internal predecessors, (55), 2 states have call successors, (11), 10 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 75 [2022-02-24 00:32:26,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 00:32:26,132 INFO L225 Difference]: With dead ends: 1123 [2022-02-24 00:32:26,132 INFO L226 Difference]: Without dead ends: 1038 [2022-02-24 00:32:26,132 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2022-02-24 00:32:26,133 INFO L933 BasicCegarLoop]: 355 mSDtfsCounter, 349 mSDsluCounter, 911 mSDsCounter, 0 mSdLazyCounter, 1686 mSolverCounterSat, 139 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 350 SdHoareTripleChecker+Valid, 1266 SdHoareTripleChecker+Invalid, 1825 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 139 IncrementalHoareTripleChecker+Valid, 1686 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-02-24 00:32:26,133 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [350 Valid, 1266 Invalid, 1825 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [139 Valid, 1686 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-02-24 00:32:26,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1038 states. [2022-02-24 00:32:26,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1038 to 960. [2022-02-24 00:32:26,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 960 states, 762 states have (on average 1.2480314960629921) internal successors, (951), 777 states have internal predecessors, (951), 101 states have call successors, (101), 76 states have call predecessors, (101), 96 states have return successors, (129), 110 states have call predecessors, (129), 96 states have call successors, (129) [2022-02-24 00:32:26,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 960 states to 960 states and 1181 transitions. [2022-02-24 00:32:26,246 INFO L78 Accepts]: Start accepts. Automaton has 960 states and 1181 transitions. Word has length 75 [2022-02-24 00:32:26,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 00:32:26,246 INFO L470 AbstractCegarLoop]: Abstraction has 960 states and 1181 transitions. [2022-02-24 00:32:26,246 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.6666666666666665) internal successors, (55), 5 states have internal predecessors, (55), 2 states have call successors, (11), 10 states have call predecessors, (11), 3 states have return successors, (9), 4 states have call predecessors, (9), 2 states have call successors, (9) [2022-02-24 00:32:26,246 INFO L276 IsEmpty]: Start isEmpty. Operand 960 states and 1181 transitions. [2022-02-24 00:32:26,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-02-24 00:32:26,247 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 00:32:26,247 INFO L514 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] [2022-02-24 00:32:26,247 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2022-02-24 00:32:26,247 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 00:32:26,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 00:32:26,248 INFO L85 PathProgramCache]: Analyzing trace with hash -1981078137, now seen corresponding path program 1 times [2022-02-24 00:32:26,248 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-24 00:32:26,248 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330646760] [2022-02-24 00:32:26,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 00:32:26,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 00:32:26,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-24 00:32:26,260 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-02-24 00:32:26,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-24 00:32:26,326 INFO L138 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-02-24 00:32:26,326 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-02-24 00:32:26,327 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-02-24 00:32:26,328 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2022-02-24 00:32:26,331 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 00:32:26,333 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-02-24 00:32:26,440 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.02 12:32:26 BasicIcfg [2022-02-24 00:32:26,440 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-02-24 00:32:26,440 INFO L158 Benchmark]: Toolchain (without parser) took 149810.32ms. Allocated memory was 181.4MB in the beginning and 394.3MB in the end (delta: 212.9MB). Free memory was 123.8MB in the beginning and 253.5MB in the end (delta: -129.6MB). Peak memory consumption was 83.9MB. Max. memory is 8.0GB. [2022-02-24 00:32:26,440 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 181.4MB. Free memory was 142.5MB in the beginning and 142.3MB in the end (delta: 122.5kB). There was no memory consumed. Max. memory is 8.0GB. [2022-02-24 00:32:26,441 INFO L158 Benchmark]: CACSL2BoogieTranslator took 549.06ms. Allocated memory was 181.4MB in the beginning and 263.2MB in the end (delta: 81.8MB). Free memory was 123.7MB in the beginning and 217.4MB in the end (delta: -93.7MB). Peak memory consumption was 5.5MB. Max. memory is 8.0GB. [2022-02-24 00:32:26,441 INFO L158 Benchmark]: Boogie Preprocessor took 95.63ms. Allocated memory is still 263.2MB. Free memory was 217.4MB in the beginning and 212.2MB in the end (delta: 5.2MB). Peak memory consumption was 5.2MB. Max. memory is 8.0GB. [2022-02-24 00:32:26,441 INFO L158 Benchmark]: RCFGBuilder took 1099.16ms. Allocated memory is still 263.2MB. Free memory was 212.2MB in the beginning and 146.7MB in the end (delta: 65.5MB). Peak memory consumption was 65.0MB. Max. memory is 8.0GB. [2022-02-24 00:32:26,441 INFO L158 Benchmark]: IcfgTransformer took 70.90ms. Allocated memory is still 263.2MB. Free memory was 146.7MB in the beginning and 138.9MB in the end (delta: 7.9MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. [2022-02-24 00:32:26,441 INFO L158 Benchmark]: TraceAbstraction took 147989.17ms. Allocated memory was 263.2MB in the beginning and 394.3MB in the end (delta: 131.1MB). Free memory was 138.3MB in the beginning and 253.5MB in the end (delta: -115.1MB). Peak memory consumption was 17.5MB. Max. memory is 8.0GB. [2022-02-24 00:32:26,445 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 181.4MB. Free memory was 142.5MB in the beginning and 142.3MB in the end (delta: 122.5kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 549.06ms. Allocated memory was 181.4MB in the beginning and 263.2MB in the end (delta: 81.8MB). Free memory was 123.7MB in the beginning and 217.4MB in the end (delta: -93.7MB). Peak memory consumption was 5.5MB. Max. memory is 8.0GB. * Boogie Preprocessor took 95.63ms. Allocated memory is still 263.2MB. Free memory was 217.4MB in the beginning and 212.2MB in the end (delta: 5.2MB). Peak memory consumption was 5.2MB. Max. memory is 8.0GB. * RCFGBuilder took 1099.16ms. Allocated memory is still 263.2MB. Free memory was 212.2MB in the beginning and 146.7MB in the end (delta: 65.5MB). Peak memory consumption was 65.0MB. Max. memory is 8.0GB. * IcfgTransformer took 70.90ms. Allocated memory is still 263.2MB. Free memory was 146.7MB in the beginning and 138.9MB in the end (delta: 7.9MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. * TraceAbstraction took 147989.17ms. Allocated memory was 263.2MB in the beginning and 394.3MB in the end (delta: 131.1MB). Free memory was 138.3MB in the beginning and 253.5MB in the end (delta: -115.1MB). Peak memory consumption was 17.5MB. 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: 59]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L32] int s ; [L33] int UNLOADED ; [L34] int NP ; [L35] int DC ; [L36] int SKIP1 ; [L37] int SKIP2 ; [L38] int MPR1 ; [L39] int MPR3 ; [L40] int IPC ; [L41] int pended ; [L42] int compFptr ; [L43] int compRegistered ; [L44] int lowerDriverReturn ; [L45] int setEventCalled ; [L46] int customIrp ; [L47] int routine ; [L48] int myStatus ; [L49] int pirp ; [L50] int Executive ; [L51] int Suspended ; [L52] int KernelMode ; [L53] int DeviceUsageTypePaging ; VAL [\old(compFptr)=147535, \old(compRegistered)=147529, \old(customIrp)=147518, \old(DC)=147533, \old(DeviceUsageTypePaging)=147522, \old(Executive)=147515, \old(IPC)=147524, \old(KernelMode)=147520, \old(lowerDriverReturn)=147513, \old(MPR1)=147526, \old(MPR3)=147536, \old(myStatus)=147532, \old(NP)=147516, \old(pended)=147519, \old(pirp)=147527, \old(routine)=147514, \old(s)=147521, \old(setEventCalled)=147517, \old(SKIP1)=147523, \old(SKIP2)=147530, \old(Suspended)=147528, \old(UNLOADED)=147534, compFptr=0, compRegistered=0, customIrp=0, DC=0, DeviceUsageTypePaging=0, Executive=0, IPC=0, KernelMode=0, lowerDriverReturn=0, MPR1=0, MPR3=0, myStatus=0, NP=0, pended=0, pirp=0, routine=0, s=0, setEventCalled=0, SKIP1=0, SKIP2=0, Suspended=0, UNLOADED=0] [L1718] int pirp__IoStatus__Status ; [L1719] int d = __VERIFIER_nondet_int() ; [L1720] int status = __VERIFIER_nondet_int() ; [L1721] int irp = __VERIFIER_nondet_int() ; [L1722] int we_should_unload = __VERIFIER_nondet_int() ; [L1723] int irp_choice = __VERIFIER_nondet_int() ; [L1724] int devobj = __VERIFIER_nondet_int() ; [L1725] int __cil_tmp9 ; [L1730] s = 0 [L1731] UNLOADED = 0 [L1732] NP = 0 [L1733] DC = 0 [L1734] SKIP1 = 0 [L1735] SKIP2 = 0 [L1736] MPR1 = 0 [L1737] MPR3 = 0 [L1738] IPC = 0 [L1739] pended = 0 [L1740] compFptr = 0 [L1741] compRegistered = 0 [L1742] lowerDriverReturn = 0 [L1743] setEventCalled = 0 [L1744] customIrp = 0 [L1745] routine = 0 [L1746] myStatus = 0 [L1747] pirp = 0 [L1748] Executive = 0 [L1749] Suspended = 5 [L1750] KernelMode = 0 [L1751] DeviceUsageTypePaging = 1 [L1754] pirp = irp VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=0, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=0, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=0, customIrp=0, d=0, DC=0, DeviceUsageTypePaging=1, devobj=0, Executive=0, IPC=0, irp=-2, irp_choice=0, KernelMode=0, lowerDriverReturn=0, MPR1=0, MPR3=0, myStatus=0, NP=0, pended=0, pirp=-2, routine=0, s=0, setEventCalled=0, SKIP1=0, SKIP2=0, status=0, Suspended=5, UNLOADED=0, we_should_unload=0] [L1755] CALL _BLAST_init() VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=0, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=0, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=0, customIrp=0, DC=0, DeviceUsageTypePaging=1, Executive=0, IPC=0, KernelMode=0, lowerDriverReturn=0, MPR1=0, MPR3=0, myStatus=0, NP=0, pended=0, pirp=-2, routine=0, s=0, setEventCalled=0, SKIP1=0, SKIP2=0, Suspended=5, UNLOADED=0] [L67] UNLOADED = 0 [L68] NP = 1 [L69] DC = 2 [L70] SKIP1 = 3 [L71] SKIP2 = 4 [L72] MPR1 = 5 [L73] MPR3 = 6 [L74] IPC = 7 [L75] s = UNLOADED [L76] pended = 0 [L77] compFptr = 0 [L78] compRegistered = 0 [L79] lowerDriverReturn = 0 [L80] setEventCalled = 0 [L81] customIrp = 0 VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=0, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=0, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=0, customIrp=0, DC=2, DeviceUsageTypePaging=1, Executive=0, IPC=7, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=0, NP=1, pended=0, pirp=-2, routine=0, s=0, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1755] RET _BLAST_init() VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=0, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=0, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=0, customIrp=0, d=0, DC=2, DeviceUsageTypePaging=1, devobj=0, Executive=0, IPC=7, irp=-2, irp_choice=0, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=0, NP=1, pended=0, pirp=-2, routine=0, s=0, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, Suspended=5, UNLOADED=0, we_should_unload=0] [L1757] COND TRUE status >= 0 [L1758] s = NP [L1759] customIrp = 0 [L1760] setEventCalled = customIrp [L1761] lowerDriverReturn = setEventCalled [L1762] compRegistered = lowerDriverReturn [L1763] compFptr = compRegistered [L1764] pended = compFptr [L1765] pirp__IoStatus__Status = 0 [L1766] myStatus = 0 VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=0, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=0, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=0, customIrp=0, d=0, DC=2, DeviceUsageTypePaging=1, devobj=0, Executive=0, IPC=7, irp=-2, irp_choice=0, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=0, NP=1, pended=0, pirp=-2, pirp__IoStatus__Status=0, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, Suspended=5, UNLOADED=0, we_should_unload=0] [L1767] COND TRUE irp_choice == 0 [L1768] pirp__IoStatus__Status = -1073741637 [L1769] myStatus = -1073741637 VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=0, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=0, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=0, customIrp=0, d=0, DC=2, DeviceUsageTypePaging=1, devobj=0, Executive=0, IPC=7, irp=-2, irp_choice=0, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=0, pirp=-2, pirp__IoStatus__Status=-1073741637, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, Suspended=5, UNLOADED=0, we_should_unload=0] [L1772] CALL stub_driver_init() VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=0, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=0, customIrp=0, DC=2, DeviceUsageTypePaging=1, Executive=0, IPC=7, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=0, pirp=-2, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1707] s = NP [L1708] customIrp = 0 [L1709] setEventCalled = customIrp [L1710] lowerDriverReturn = setEventCalled [L1711] compRegistered = lowerDriverReturn [L1712] compFptr = compRegistered [L1713] pended = compFptr VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=0, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=0, customIrp=0, DC=2, DeviceUsageTypePaging=1, Executive=0, IPC=7, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=0, pirp=-2, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1772] RET stub_driver_init() VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=0, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=0, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=0, customIrp=0, d=0, DC=2, DeviceUsageTypePaging=1, devobj=0, Executive=0, IPC=7, irp=-2, irp_choice=0, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=0, pirp=-2, pirp__IoStatus__Status=-1073741637, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, Suspended=5, UNLOADED=0, we_should_unload=0] [L1775] COND FALSE !(status < 0) [L1779] int tmp_ndt_1; [L1780] tmp_ndt_1 = __VERIFIER_nondet_int() [L1781] COND TRUE tmp_ndt_1 == 2 VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=0, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=0, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=0, customIrp=0, d=0, DC=2, DeviceUsageTypePaging=1, devobj=0, Executive=0, IPC=7, irp=-2, irp_choice=0, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=0, pirp=-2, pirp__IoStatus__Status=-1073741637, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, Suspended=5, tmp_ndt_1=2, UNLOADED=0, we_should_unload=0] [L1798] CALL, EXPR CdAudioDeviceControl(devobj, pirp) VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=-2, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=-1073741637, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=0, customIrp=0, DC=2, DeviceUsageTypePaging=1, Executive=0, IPC=7, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=0, pirp=-2, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L313] int deviceExtension__Active = __VERIFIER_nondet_int() ; [L314] int status ; VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=-2, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=-1073741637, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=0, customIrp=0, DC=2, deviceExtension__Active=7, DeviceObject=0, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=-2, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=0, pirp=-2, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L317] COND FALSE !(deviceExtension__Active == 2) VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=-2, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=-1073741637, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=0, customIrp=0, DC=2, deviceExtension__Active=7, DeviceObject=0, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=-2, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=0, pirp=-2, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L320] COND FALSE !(deviceExtension__Active == 3) VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=-2, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=-1073741637, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=0, customIrp=0, DC=2, deviceExtension__Active=7, DeviceObject=0, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=-2, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=0, pirp=-2, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L323] COND FALSE !(deviceExtension__Active == 1) VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=-2, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=-1073741637, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=0, customIrp=0, DC=2, deviceExtension__Active=7, DeviceObject=0, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=-2, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=0, pirp=-2, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L326] COND TRUE deviceExtension__Active == 7 VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=-2, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=-1073741637, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=0, customIrp=0, DC=2, deviceExtension__Active=7, DeviceObject=0, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=-2, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=0, pirp=-2, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L348] CALL, EXPR CdAudioHPCdrDeviceControl(DeviceObject, Irp) VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=-2, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=-1073741637, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=0, customIrp=0, DC=2, DeviceUsageTypePaging=1, Executive=0, IPC=7, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=0, pirp=-2, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1591] int currentIrpStack__Parameters__DeviceIoControl__IoControlCode = __VERIFIER_nondet_int() ; [L1592] int deviceExtension__TargetDeviceObject = __VERIFIER_nondet_int() ; [L1593] int irpSp__Control ; [L1594] int tmp ; [L1595] int tmp___0 ; [L1596] int __cil_tmp8 ; [L1597] int __cil_tmp9 ; [L1598] int __cil_tmp10 ; [L1599] int __cil_tmp11 ; [L1600] int __cil_tmp12 ; [L1604] __cil_tmp8 = 56 [L1605] __cil_tmp9 = 16384 [L1606] __cil_tmp10 = 131072 [L1607] __cil_tmp11 = 147456 [L1608] __cil_tmp12 = 147512 VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=-2, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=-1073741637, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, __cil_tmp10=131072, __cil_tmp11=147456, __cil_tmp12=147512, __cil_tmp8=56, __cil_tmp9=16384, compFptr=0, compRegistered=0, currentIrpStack__Parameters__DeviceIoControl__IoControlCode=147512, customIrp=0, DC=2, deviceExtension__TargetDeviceObject=-3, DeviceObject=0, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=-2, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=0, pirp=-2, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1609] COND TRUE currentIrpStack__Parameters__DeviceIoControl__IoControlCode == __cil_tmp12 VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=-2, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=-1073741637, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, __cil_tmp10=131072, __cil_tmp11=147456, __cil_tmp12=147512, __cil_tmp8=56, __cil_tmp9=16384, compFptr=0, compRegistered=0, currentIrpStack__Parameters__DeviceIoControl__IoControlCode=147512, customIrp=0, DC=2, deviceExtension__TargetDeviceObject=-3, DeviceObject=0, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=-2, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=0, pirp=-2, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1610] COND FALSE !(s != NP) VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=-2, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=-1073741637, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, __cil_tmp10=131072, __cil_tmp11=147456, __cil_tmp12=147512, __cil_tmp8=56, __cil_tmp9=16384, compFptr=0, compRegistered=0, currentIrpStack__Parameters__DeviceIoControl__IoControlCode=147512, customIrp=0, DC=2, deviceExtension__TargetDeviceObject=-3, DeviceObject=0, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=-2, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=0, pirp=-2, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1615] COND FALSE !(compRegistered != 0) [L1620] compRegistered = 1 [L1621] routine = 0 VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=-2, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=-1073741637, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, __cil_tmp10=131072, __cil_tmp11=147456, __cil_tmp12=147512, __cil_tmp8=56, __cil_tmp9=16384, compFptr=0, compRegistered=1, currentIrpStack__Parameters__DeviceIoControl__IoControlCode=147512, customIrp=0, DC=2, deviceExtension__TargetDeviceObject=-3, DeviceObject=0, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=-2, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=0, pirp=-2, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1625] irpSp__Control = 224 VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=-2, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=-1073741637, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, __cil_tmp10=131072, __cil_tmp11=147456, __cil_tmp12=147512, __cil_tmp8=56, __cil_tmp9=16384, compFptr=0, compRegistered=1, currentIrpStack__Parameters__DeviceIoControl__IoControlCode=147512, customIrp=0, DC=2, deviceExtension__TargetDeviceObject=-3, DeviceObject=0, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=-2, irpSp__Control=224, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=0, pirp=-2, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1626] CALL, EXPR IofCallDriver(deviceExtension__TargetDeviceObject, Irp) VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=-3, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=-2, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=-1073741637, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=1, customIrp=0, DC=2, DeviceUsageTypePaging=1, Executive=0, IPC=7, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=0, pirp=-2, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1900] int Irp__PendingReturned = __VERIFIER_nondet_int() ; [L1901] int returnVal2 ; [L1902] int compRetStatus ; [L1903] int lcontext = __VERIFIER_nondet_int() ; [L1904] unsigned long __cil_tmp8 ; VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=-3, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=-2, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=-1073741637, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=1, customIrp=0, DC=2, DeviceObject=-3, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=-2, Irp__PendingReturned=0, KernelMode=0, lcontext=4, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=0, pirp=-2, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1907] COND TRUE \read(compRegistered) VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=-3, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=-2, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=-1073741637, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=1, customIrp=0, DC=2, DeviceObject=-3, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=-2, Irp__PendingReturned=0, KernelMode=0, lcontext=4, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=0, pirp=-2, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1908] COND TRUE routine == 0 VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=-3, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=-2, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=-1073741637, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=1, customIrp=0, DC=2, DeviceObject=-3, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=-2, Irp__PendingReturned=0, KernelMode=0, lcontext=4, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=0, pirp=-2, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1910] CALL, EXPR HPCdrCompletion(DeviceObject, Irp, lcontext) VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(Context)=4, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=-3, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=-2, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=-1073741637, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=1, customIrp=0, DC=2, DeviceUsageTypePaging=1, Executive=0, IPC=7, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=0, pirp=-2, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1569] int Irp__PendingReturned = __VERIFIER_nondet_int() ; [L1570] int Irp__AssociatedIrp__SystemBuffer = __VERIFIER_nondet_int() ; [L1573] COND TRUE \read(Irp__PendingReturned) VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(Context)=4, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=-3, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=-2, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=-1073741637, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=1, Context=4, customIrp=0, DC=2, DeviceObject=-3, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=-2, Irp__AssociatedIrp__SystemBuffer=0, Irp__PendingReturned=-4, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=0, pirp=-2, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1574] COND TRUE pended == 0 [L1575] pended = 1 VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(Context)=4, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=-3, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=-2, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=-1073741637, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=1, Context=4, customIrp=0, DC=2, DeviceObject=-3, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=-2, Irp__AssociatedIrp__SystemBuffer=0, Irp__PendingReturned=-4, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=1, pirp=-2, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1582] COND FALSE !(myStatus >= 0) VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(Context)=4, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=-3, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=-2, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=-1073741637, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=1, Context=4, customIrp=0, DC=2, DeviceObject=-3, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=-2, Irp__AssociatedIrp__SystemBuffer=0, Irp__PendingReturned=-4, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=1, pirp=-2, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1587] return (myStatus); VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(Context)=4, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=-3, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=-2, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=-1073741637, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, \result=-1073741637, compFptr=0, compRegistered=1, Context=4, customIrp=0, DC=2, DeviceObject=-3, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=-2, Irp__AssociatedIrp__SystemBuffer=0, Irp__PendingReturned=-4, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=1, pirp=-2, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1910] RET, EXPR HPCdrCompletion(DeviceObject, Irp, lcontext) VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=-3, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=-2, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=-1073741637, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=1, customIrp=0, DC=2, DeviceObject=-3, DeviceUsageTypePaging=1, Executive=0, HPCdrCompletion(DeviceObject, Irp, lcontext)=-1073741637, IPC=7, Irp=-2, Irp__PendingReturned=0, KernelMode=0, lcontext=4, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=1, pirp=-2, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1910] compRetStatus = HPCdrCompletion(DeviceObject, Irp, lcontext) [L1920] __cil_tmp8 = (unsigned long )compRetStatus VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=-3, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=-2, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=-1073741637, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, __cil_tmp8=18446744072635809979, compFptr=0, compRegistered=1, compRetStatus=-1073741637, customIrp=0, DC=2, DeviceObject=-3, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=-2, Irp__PendingReturned=0, KernelMode=0, lcontext=4, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=1, pirp=-2, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1921] COND FALSE !(__cil_tmp8 == -1073741802) VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=-3, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=-2, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=-1073741637, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, __cil_tmp8=18446744072635809979, compFptr=0, compRegistered=1, compRetStatus=-1073741637, customIrp=0, DC=2, DeviceObject=-3, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=-2, Irp__PendingReturned=0, KernelMode=0, lcontext=4, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=1, pirp=-2, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1928] COND FALSE !(\read(Irp__PendingReturned)) [L1931] int tmp_ndt_4; [L1932] tmp_ndt_4 = __VERIFIER_nondet_int() [L1933] COND TRUE tmp_ndt_4 == 0 VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=-3, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=-2, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=-1073741637, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, __cil_tmp8=18446744072635809979, compFptr=0, compRegistered=1, compRetStatus=-1073741637, customIrp=0, DC=2, DeviceObject=-3, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=-2, Irp__PendingReturned=0, KernelMode=0, lcontext=4, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=1, pirp=-2, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, tmp_ndt_4=0, UNLOADED=0] [L1944] returnVal2 = 0 VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=-3, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=-2, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=-1073741637, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, __cil_tmp8=18446744072635809979, compFptr=0, compRegistered=1, compRetStatus=-1073741637, customIrp=0, DC=2, DeviceObject=-3, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=-2, Irp__PendingReturned=0, KernelMode=0, lcontext=4, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=1, pirp=-2, returnVal2=0, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, tmp_ndt_4=0, UNLOADED=0] [L1958] COND TRUE s == NP [L1959] s = IPC [L1960] lowerDriverReturn = returnVal2 VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=-3, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=-2, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=-1073741637, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, __cil_tmp8=18446744072635809979, compFptr=0, compRegistered=1, compRetStatus=-1073741637, customIrp=0, DC=2, DeviceObject=-3, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=-2, Irp__PendingReturned=0, KernelMode=0, lcontext=4, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=1, pirp=-2, returnVal2=0, routine=0, s=7, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, tmp_ndt_4=0, UNLOADED=0] [L1981] return (returnVal2); VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=-3, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=-2, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=-1073741637, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, \result=0, __cil_tmp8=18446744072635809979, compFptr=0, compRegistered=1, compRetStatus=-1073741637, customIrp=0, DC=2, DeviceObject=-3, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=-2, Irp__PendingReturned=0, KernelMode=0, lcontext=4, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=1, pirp=-2, returnVal2=0, routine=0, s=7, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, tmp_ndt_4=0, UNLOADED=0] [L1626] RET, EXPR IofCallDriver(deviceExtension__TargetDeviceObject, Irp) VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=-2, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=-1073741637, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, __cil_tmp10=131072, __cil_tmp11=147456, __cil_tmp12=147512, __cil_tmp8=56, __cil_tmp9=16384, compFptr=0, compRegistered=1, currentIrpStack__Parameters__DeviceIoControl__IoControlCode=147512, customIrp=0, DC=2, deviceExtension__TargetDeviceObject=-3, DeviceObject=0, DeviceUsageTypePaging=1, Executive=0, IofCallDriver(deviceExtension__TargetDeviceObject, Irp)=0, IPC=7, Irp=-2, irpSp__Control=224, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=1, pirp=-2, routine=0, s=7, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1626] tmp = IofCallDriver(deviceExtension__TargetDeviceObject, Irp) [L1628] return (tmp); VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=-2, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=-1073741637, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, \result=0, __cil_tmp10=131072, __cil_tmp11=147456, __cil_tmp12=147512, __cil_tmp8=56, __cil_tmp9=16384, compFptr=0, compRegistered=1, currentIrpStack__Parameters__DeviceIoControl__IoControlCode=147512, customIrp=0, DC=2, deviceExtension__TargetDeviceObject=-3, DeviceObject=0, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=-2, irpSp__Control=224, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=1, pirp=-2, routine=0, s=7, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, tmp=0, UNLOADED=0] [L348] RET, EXPR CdAudioHPCdrDeviceControl(DeviceObject, Irp) VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=-2, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=-1073741637, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, CdAudioHPCdrDeviceControl(DeviceObject, Irp)=0, compFptr=0, compRegistered=1, customIrp=0, DC=2, deviceExtension__Active=7, DeviceObject=0, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=-2, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=1, pirp=-2, routine=0, s=7, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L348] status = CdAudioHPCdrDeviceControl(DeviceObject, Irp) [L363] return (status); VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=-2, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=-1073741637, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, \result=0, compFptr=0, compRegistered=1, customIrp=0, DC=2, deviceExtension__Active=7, DeviceObject=0, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=-2, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=1, pirp=-2, routine=0, s=7, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, Suspended=5, UNLOADED=0] [L1798] RET, EXPR CdAudioDeviceControl(devobj, pirp) VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=0, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=0, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, CdAudioDeviceControl(devobj, pirp)=0, compFptr=0, compRegistered=1, customIrp=0, d=0, DC=2, DeviceUsageTypePaging=1, devobj=0, Executive=0, IPC=7, irp=-2, irp_choice=0, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=1, pirp=-2, pirp__IoStatus__Status=-1073741637, routine=0, s=7, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, Suspended=5, tmp_ndt_1=2, UNLOADED=0, we_should_unload=0] [L1798] status = CdAudioDeviceControl(devobj, pirp) [L1819] COND FALSE !(\read(we_should_unload)) VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=0, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=0, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=1, customIrp=0, d=0, DC=2, DeviceUsageTypePaging=1, devobj=0, Executive=0, IPC=7, irp=-2, irp_choice=0, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=1, pirp=-2, pirp__IoStatus__Status=-1073741637, routine=0, s=7, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, Suspended=5, tmp_ndt_1=2, UNLOADED=0, we_should_unload=0] [L1825] COND TRUE pended == 1 VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=0, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=0, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=1, customIrp=0, d=0, DC=2, DeviceUsageTypePaging=1, devobj=0, Executive=0, IPC=7, irp=-2, irp_choice=0, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=1, pirp=-2, pirp__IoStatus__Status=-1073741637, routine=0, s=7, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, Suspended=5, tmp_ndt_1=2, UNLOADED=0, we_should_unload=0] [L1826] COND FALSE !(s == NP) VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=0, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=0, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=1, customIrp=0, d=0, DC=2, DeviceUsageTypePaging=1, devobj=0, Executive=0, IPC=7, irp=-2, irp_choice=0, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=1, pirp=-2, pirp__IoStatus__Status=-1073741637, routine=0, s=7, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, Suspended=5, tmp_ndt_1=2, UNLOADED=0, we_should_unload=0] [L1833] COND TRUE pended == 1 VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=0, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=0, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=1, customIrp=0, d=0, DC=2, DeviceUsageTypePaging=1, devobj=0, Executive=0, IPC=7, irp=-2, irp_choice=0, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=1, pirp=-2, pirp__IoStatus__Status=-1073741637, routine=0, s=7, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, Suspended=5, tmp_ndt_1=2, UNLOADED=0, we_should_unload=0] [L1834] COND FALSE !(s == MPR3) VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=0, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=0, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=1, customIrp=0, d=0, DC=2, DeviceUsageTypePaging=1, devobj=0, Executive=0, IPC=7, irp=-2, irp_choice=0, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=1, pirp=-2, pirp__IoStatus__Status=-1073741637, routine=0, s=7, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, Suspended=5, tmp_ndt_1=2, UNLOADED=0, we_should_unload=0] [L1841] COND TRUE s != UNLOADED VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=0, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=0, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=1, customIrp=0, d=0, DC=2, DeviceUsageTypePaging=1, devobj=0, Executive=0, IPC=7, irp=-2, irp_choice=0, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=1, pirp=-2, pirp__IoStatus__Status=-1073741637, routine=0, s=7, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, Suspended=5, tmp_ndt_1=2, UNLOADED=0, we_should_unload=0] [L1842] COND TRUE status != -1 VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=0, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=0, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=1, customIrp=0, d=0, DC=2, DeviceUsageTypePaging=1, devobj=0, Executive=0, IPC=7, irp=-2, irp_choice=0, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=1, pirp=-2, pirp__IoStatus__Status=-1073741637, routine=0, s=7, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, Suspended=5, tmp_ndt_1=2, UNLOADED=0, we_should_unload=0] [L1843] COND TRUE s != SKIP2 VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=0, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=0, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=1, customIrp=0, d=0, DC=2, DeviceUsageTypePaging=1, devobj=0, Executive=0, IPC=7, irp=-2, irp_choice=0, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=1, pirp=-2, pirp__IoStatus__Status=-1073741637, routine=0, s=7, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, Suspended=5, tmp_ndt_1=2, UNLOADED=0, we_should_unload=0] [L1844] COND FALSE !(s != IPC) VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=0, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=0, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=1, customIrp=0, d=0, DC=2, DeviceUsageTypePaging=1, devobj=0, Executive=0, IPC=7, irp=-2, irp_choice=0, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=1, pirp=-2, pirp__IoStatus__Status=-1073741637, routine=0, s=7, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, Suspended=5, tmp_ndt_1=2, UNLOADED=0, we_should_unload=0] [L1857] COND FALSE !(pended != 1) VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=0, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=0, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=1, customIrp=0, d=0, DC=2, DeviceUsageTypePaging=1, devobj=0, Executive=0, IPC=7, irp=-2, irp_choice=0, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=1, pirp=-2, pirp__IoStatus__Status=-1073741637, routine=0, s=7, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, Suspended=5, tmp_ndt_1=2, UNLOADED=0, we_should_unload=0] [L1869] COND TRUE status != 259 VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=0, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=0, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=1, customIrp=0, d=0, DC=2, DeviceUsageTypePaging=1, devobj=0, Executive=0, IPC=7, irp=-2, irp_choice=0, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=1, pirp=-2, pirp__IoStatus__Status=-1073741637, routine=0, s=7, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, Suspended=5, tmp_ndt_1=2, UNLOADED=0, we_should_unload=0] [L1871] CALL errorFn() VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=0, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=0, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=1, customIrp=0, DC=2, DeviceUsageTypePaging=1, Executive=0, IPC=7, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=1, pirp=-2, routine=0, s=7, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L59] reach_error() VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=0, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=0, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=1, customIrp=0, DC=2, DeviceUsageTypePaging=1, Executive=0, IPC=7, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=1, pirp=-2, routine=0, s=7, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 30 procedures, 517 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 147.8s, OverallIterations: 67, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 127.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 69213 SdHoareTripleChecker+Valid, 110.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 68794 mSDsluCounter, 116921 SdHoareTripleChecker+Invalid, 93.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 78313 mSDsCounter, 24012 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 193611 IncrementalHoareTripleChecker+Invalid, 217623 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 24012 mSolverCounterUnsat, 38608 mSDtfsCounter, 193611 mSolverCounterSat, 0.8s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1741 GetRequests, 647 SyntacticMatches, 14 SemanticMatches, 1080 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2730 ImplicationChecksByTransitivity, 16.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=978occurred in iteration=62, InterpolantAutomatonStates: 890, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 5.1s AutomataMinimizationTime, 66 MinimizatonAttempts, 8532 StatesRemovedByMinimization, 66 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 13.2s InterpolantComputationTime, 3941 NumberOfCodeBlocks, 3941 NumberOfCodeBlocksAsserted, 67 NumberOfCheckSat, 3802 ConstructedInterpolants, 0 QuantifiedInterpolants, 20031 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 66 InterpolantComputations, 66 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2022-02-24 00:32:26,460 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...