/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCTransformed.xml -s ../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf -i ../../../trunk/examples/svcomp/ntdrivers-simplified/cdaudio_simpl1.cil-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-b030c9e [2022-03-20 07:25:43,377 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-20 07:25:43,378 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-20 07:25:43,401 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-03-20 07:25:43,401 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-03-20 07:25:43,402 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-03-20 07:25:43,403 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-03-20 07:25:43,404 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-03-20 07:25:43,406 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-03-20 07:25:43,406 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-03-20 07:25:43,407 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-03-20 07:25:43,408 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-03-20 07:25:43,408 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-03-20 07:25:43,409 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-03-20 07:25:43,409 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-03-20 07:25:43,410 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-03-20 07:25:43,410 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-03-20 07:25:43,411 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-03-20 07:25:43,412 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-03-20 07:25:43,413 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-03-20 07:25:43,414 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-03-20 07:25:43,415 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-03-20 07:25:43,416 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-03-20 07:25:43,416 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-03-20 07:25:43,417 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-03-20 07:25:43,419 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-03-20 07:25:43,419 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-03-20 07:25:43,419 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-03-20 07:25:43,420 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-03-20 07:25:43,420 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-03-20 07:25:43,421 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-03-20 07:25:43,421 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-03-20 07:25:43,421 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-03-20 07:25:43,422 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-03-20 07:25:43,422 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-03-20 07:25:43,423 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-03-20 07:25:43,423 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-03-20 07:25:43,423 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-03-20 07:25:43,423 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-03-20 07:25:43,423 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-20 07:25:43,424 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-20 07:25:43,424 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-20 07:25:43,425 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2022-03-20 07:25:43,431 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-20 07:25:43,431 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-20 07:25:43,432 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-20 07:25:43,432 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-20 07:25:43,433 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-20 07:25:43,433 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-20 07:25:43,433 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-20 07:25:43,433 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-20 07:25:43,433 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-20 07:25:43,433 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-20 07:25:43,433 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-20 07:25:43,433 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-20 07:25:43,433 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-20 07:25:43,433 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-20 07:25:43,434 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-20 07:25:43,434 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-20 07:25:43,434 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-20 07:25:43,434 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-20 07:25:43,434 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-20 07:25:43,434 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-20 07:25:43,434 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-20 07:25:43,435 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-03-20 07:25:43,435 INFO L138 SettingsManager]: * TransformationType=LOOP_ACCELERATION_JORDAN WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-03-20 07:25:43,616 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-20 07:25:43,657 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-20 07:25:43,659 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-20 07:25:43,659 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-20 07:25:43,660 INFO L275 PluginConnector]: CDTParser initialized [2022-03-20 07:25:43,662 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ntdrivers-simplified/cdaudio_simpl1.cil-1.c [2022-03-20 07:25:43,707 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f9769aab2/c469f9ec130f4b35a9b03ff89a41d9df/FLAGe1d96878a [2022-03-20 07:25:44,137 INFO L306 CDTParser]: Found 1 translation units. [2022-03-20 07:25:44,147 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ntdrivers-simplified/cdaudio_simpl1.cil-1.c [2022-03-20 07:25:44,159 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f9769aab2/c469f9ec130f4b35a9b03ff89a41d9df/FLAGe1d96878a [2022-03-20 07:25:44,525 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f9769aab2/c469f9ec130f4b35a9b03ff89a41d9df [2022-03-20 07:25:44,527 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-20 07:25:44,542 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-03-20 07:25:44,544 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-20 07:25:44,544 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-20 07:25:44,551 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-20 07:25:44,552 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.03 07:25:44" (1/1) ... [2022-03-20 07:25:44,552 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a72a18c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 07:25:44, skipping insertion in model container [2022-03-20 07:25:44,553 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.03 07:25:44" (1/1) ... [2022-03-20 07:25:44,557 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-20 07:25:44,646 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-20 07:25:44,772 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] [2022-03-20 07:25:44,942 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-20 07:25:44,947 INFO L203 MainTranslator]: Completed pre-run [2022-03-20 07:25:44,963 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] [2022-03-20 07:25:45,022 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-20 07:25:45,048 INFO L208 MainTranslator]: Completed translation [2022-03-20 07:25:45,049 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 07:25:45 WrapperNode [2022-03-20 07:25:45,049 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-20 07:25:45,049 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-20 07:25:45,050 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-20 07:25:45,050 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-20 07:25:45,058 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 07:25:45" (1/1) ... [2022-03-20 07:25:45,058 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 07:25:45" (1/1) ... [2022-03-20 07:25:45,073 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 07:25:45" (1/1) ... [2022-03-20 07:25:45,073 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 07:25:45" (1/1) ... [2022-03-20 07:25:45,104 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 07:25:45" (1/1) ... [2022-03-20 07:25:45,114 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 07:25:45" (1/1) ... [2022-03-20 07:25:45,117 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 07:25:45" (1/1) ... [2022-03-20 07:25:45,123 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-20 07:25:45,124 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-20 07:25:45,124 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-20 07:25:45,124 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-20 07:25:45,125 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 07:25:45" (1/1) ... [2022-03-20 07:25:45,130 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-20 07:25:45,138 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 07:25:45,147 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-03-20 07:25:45,179 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-03-20 07:25:45,212 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-03-20 07:25:45,212 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-20 07:25:45,212 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-03-20 07:25:45,212 INFO L138 BoogieDeclarations]: Found implementation of procedure errorFn [2022-03-20 07:25:45,212 INFO L138 BoogieDeclarations]: Found implementation of procedure _BLAST_init [2022-03-20 07:25:45,213 INFO L138 BoogieDeclarations]: Found implementation of procedure SendSrbSynchronous [2022-03-20 07:25:45,213 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioSignalCompletion [2022-03-20 07:25:45,213 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioStartDevice [2022-03-20 07:25:45,213 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioPnp [2022-03-20 07:25:45,213 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioDeviceControl [2022-03-20 07:25:45,213 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioSendToNextDriver [2022-03-20 07:25:45,213 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioIsPlayActive [2022-03-20 07:25:45,213 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudio535DeviceControl [2022-03-20 07:25:45,213 INFO L138 BoogieDeclarations]: Found implementation of procedure AG_SetStatusAndReturn [2022-03-20 07:25:45,213 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudio435DeviceControl [2022-03-20 07:25:45,213 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioAtapiDeviceControl [2022-03-20 07:25:45,214 INFO L138 BoogieDeclarations]: Found implementation of procedure HpCdrProcessLastSession [2022-03-20 07:25:45,214 INFO L138 BoogieDeclarations]: Found implementation of procedure HPCdrCompletion [2022-03-20 07:25:45,214 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioHPCdrDeviceControl [2022-03-20 07:25:45,214 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioForwardIrpSynchronous [2022-03-20 07:25:45,214 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioUnload [2022-03-20 07:25:45,214 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioPower [2022-03-20 07:25:45,214 INFO L138 BoogieDeclarations]: Found implementation of procedure stub_driver_init [2022-03-20 07:25:45,214 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-03-20 07:25:45,214 INFO L138 BoogieDeclarations]: Found implementation of procedure stubMoreProcessingRequired [2022-03-20 07:25:45,214 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCallDriver [2022-03-20 07:25:45,214 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCompleteRequest [2022-03-20 07:25:45,215 INFO L138 BoogieDeclarations]: Found implementation of procedure KeSetEvent [2022-03-20 07:25:45,215 INFO L138 BoogieDeclarations]: Found implementation of procedure KeWaitForSingleObject [2022-03-20 07:25:45,215 INFO L138 BoogieDeclarations]: Found implementation of procedure PoCallDriver [2022-03-20 07:25:45,215 INFO L138 BoogieDeclarations]: Found implementation of procedure ZwClose [2022-03-20 07:25:45,215 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-03-20 07:25:45,215 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-03-20 07:25:45,215 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-03-20 07:25:45,215 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-20 07:25:45,215 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2022-03-20 07:25:45,215 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-03-20 07:25:45,215 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2022-03-20 07:25:45,216 INFO L130 BoogieDeclarations]: Found specification of procedure SendSrbSynchronous [2022-03-20 07:25:45,216 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioSignalCompletion [2022-03-20 07:25:45,216 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioStartDevice [2022-03-20 07:25:45,216 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioPnp [2022-03-20 07:25:45,216 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioDeviceControl [2022-03-20 07:25:45,216 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioSendToNextDriver [2022-03-20 07:25:45,216 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioIsPlayActive [2022-03-20 07:25:45,216 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudio535DeviceControl [2022-03-20 07:25:45,216 INFO L130 BoogieDeclarations]: Found specification of procedure AG_SetStatusAndReturn [2022-03-20 07:25:45,216 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudio435DeviceControl [2022-03-20 07:25:45,216 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioAtapiDeviceControl [2022-03-20 07:25:45,216 INFO L130 BoogieDeclarations]: Found specification of procedure HPCdrCompletion [2022-03-20 07:25:45,217 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioHPCdrDeviceControl [2022-03-20 07:25:45,217 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioForwardIrpSynchronous [2022-03-20 07:25:45,217 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioPower [2022-03-20 07:25:45,217 INFO L130 BoogieDeclarations]: Found specification of procedure IofCallDriver [2022-03-20 07:25:45,217 INFO L130 BoogieDeclarations]: Found specification of procedure KeSetEvent [2022-03-20 07:25:45,217 INFO L130 BoogieDeclarations]: Found specification of procedure KeWaitForSingleObject [2022-03-20 07:25:45,217 INFO L130 BoogieDeclarations]: Found specification of procedure PoCallDriver [2022-03-20 07:25:45,217 INFO L130 BoogieDeclarations]: Found specification of procedure ZwClose [2022-03-20 07:25:45,217 INFO L130 BoogieDeclarations]: Found specification of procedure IofCompleteRequest [2022-03-20 07:25:45,217 INFO L130 BoogieDeclarations]: Found specification of procedure errorFn [2022-03-20 07:25:45,217 INFO L130 BoogieDeclarations]: Found specification of procedure _BLAST_init [2022-03-20 07:25:45,217 INFO L130 BoogieDeclarations]: Found specification of procedure HpCdrProcessLastSession [2022-03-20 07:25:45,218 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioUnload [2022-03-20 07:25:45,218 INFO L130 BoogieDeclarations]: Found specification of procedure stub_driver_init [2022-03-20 07:25:45,218 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-03-20 07:25:45,218 INFO L130 BoogieDeclarations]: Found specification of procedure stubMoreProcessingRequired [2022-03-20 07:25:45,218 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-03-20 07:25:45,218 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-20 07:25:45,218 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-20 07:25:45,218 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-20 07:25:45,218 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-20 07:25:45,218 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-20 07:25:45,446 INFO L234 CfgBuilder]: Building ICFG [2022-03-20 07:25:45,448 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-20 07:25:45,571 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-20 07:25:45,617 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume !false; [2022-03-20 07:25:45,617 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##14: assume false; [2022-03-20 07:25:45,621 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-20 07:25:45,642 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##18: assume !false; [2022-03-20 07:25:45,643 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##17: assume false; [2022-03-20 07:25:45,657 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-20 07:25:45,667 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##16: assume !false; [2022-03-20 07:25:45,667 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume false; [2022-03-20 07:25:45,706 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-20 07:25:45,732 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##6: assume !false; [2022-03-20 07:25:45,732 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L305: #res := 0; [2022-03-20 07:25:45,732 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##5: assume false; [2022-03-20 07:25:45,736 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-20 07:25:45,895 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##21: assume false; [2022-03-20 07:25:45,895 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##22: assume !false; [2022-03-20 07:25:45,903 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-20 07:25:45,945 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##21: assume !false; [2022-03-20 07:25:45,945 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##20: assume false; [2022-03-20 07:25:45,975 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-20 07:25:45,986 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##10: assume !false; [2022-03-20 07:25:45,986 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##9: assume false; [2022-03-20 07:25:45,988 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-20 07:25:46,111 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##26: assume !false; [2022-03-20 07:25:46,111 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##25: assume false; [2022-03-20 07:25:46,119 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-20 07:25:46,122 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-20 07:25:46,122 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-20 07:25:46,135 INFO L275 CfgBuilder]: Performing block encoding [2022-03-20 07:25:46,142 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-20 07:25:46,142 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-03-20 07:25:46,144 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.03 07:25:46 BoogieIcfgContainer [2022-03-20 07:25:46,144 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-20 07:25:46,144 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-03-20 07:25:46,144 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-03-20 07:25:46,160 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-03-20 07:25:46,163 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.03 07:25:46" (1/1) ... [2022-03-20 07:25:46,164 INFO L168 ansformationObserver]: Applying ICFG transformation LOOP_ACCELERATION_JORDAN [2022-03-20 07:25:46,211 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 20.03 07:25:46 BasicIcfg [2022-03-20 07:25:46,211 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-03-20 07:25:46,214 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-20 07:25:46,214 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-20 07:25:46,216 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-20 07:25:46,216 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.03 07:25:44" (1/4) ... [2022-03-20 07:25:46,217 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41e5b5cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.03 07:25:46, skipping insertion in model container [2022-03-20 07:25:46,217 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 07:25:45" (2/4) ... [2022-03-20 07:25:46,217 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41e5b5cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.03 07:25:46, skipping insertion in model container [2022-03-20 07:25:46,218 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.03 07:25:46" (3/4) ... [2022-03-20 07:25:46,219 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41e5b5cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.03 07:25:46, skipping insertion in model container [2022-03-20 07:25:46,219 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 20.03 07:25:46" (4/4) ... [2022-03-20 07:25:46,220 INFO L111 eAbstractionObserver]: Analyzing ICFG cdaudio_simpl1.cil-1.cJordan [2022-03-20 07:25:46,225 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2022-03-20 07:25:46,226 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-20 07:25:46,266 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-20 07:25:46,270 INFO L340 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=ForwardPredicates, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP [2022-03-20 07:25:46,271 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-03-20 07:25:46,294 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) [2022-03-20 07:25:46,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-20 07:25:46,309 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 07:25:46,309 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 07:25:46,310 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 07:25:46,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 07:25:46,316 INFO L85 PathProgramCache]: Analyzing trace with hash 784814983, now seen corresponding path program 1 times [2022-03-20 07:25:46,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 07:25:46,324 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287080251] [2022-03-20 07:25:46,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 07:25:46,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 07:25:46,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:25:46,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 07:25:46,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:25:46,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 07:25:46,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:25:46,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 07:25:46,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 07:25:46,674 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287080251] [2022-03-20 07:25:46,675 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1287080251] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 07:25:46,675 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 07:25:46,675 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-20 07:25:46,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937135163] [2022-03-20 07:25:46,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 07:25:46,684 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-20 07:25:46,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 07:25:46,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-20 07:25:46,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-03-20 07:25:46,709 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) [2022-03-20 07:25:48,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 07:25:48,451 INFO L93 Difference]: Finished difference Result 681 states and 1043 transitions. [2022-03-20 07:25:48,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-20 07:25:48,453 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 [2022-03-20 07:25:48,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 07:25:48,472 INFO L225 Difference]: With dead ends: 681 [2022-03-20 07:25:48,472 INFO L226 Difference]: Without dead ends: 665 [2022-03-20 07:25:48,473 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-03-20 07:25:48,476 INFO L913 BasicCegarLoop]: 741 mSDtfsCounter, 399 mSDsluCounter, 272 mSDsCounter, 0 mSdLazyCounter, 1595 mSolverCounterSat, 158 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s 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, 1.6s IncrementalHoareTripleChecker+Time [2022-03-20 07:25:48,476 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [400 Valid, 1013 Invalid, 1753 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [158 Valid, 1595 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-03-20 07:25:48,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 665 states. [2022-03-20 07:25:48,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 665 to 509. [2022-03-20 07:25:48,552 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) [2022-03-20 07:25:48,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 509 states to 509 states and 740 transitions. [2022-03-20 07:25:48,555 INFO L78 Accepts]: Start accepts. Automaton has 509 states and 740 transitions. Word has length 20 [2022-03-20 07:25:48,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 07:25:48,555 INFO L478 AbstractCegarLoop]: Abstraction has 509 states and 740 transitions. [2022-03-20 07:25:48,555 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 3 states have internal predecessors, (14), 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) [2022-03-20 07:25:48,555 INFO L276 IsEmpty]: Start isEmpty. Operand 509 states and 740 transitions. [2022-03-20 07:25:48,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-03-20 07:25:48,556 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 07:25:48,556 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 07:25:48,556 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-20 07:25:48,557 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 07:25:48,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 07:25:48,557 INFO L85 PathProgramCache]: Analyzing trace with hash -30338372, now seen corresponding path program 1 times [2022-03-20 07:25:48,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 07:25:48,557 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293934194] [2022-03-20 07:25:48,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 07:25:48,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 07:25:48,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:25:48,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 07:25:48,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:25:48,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 07:25:48,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:25:48,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 07:25:48,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:25:48,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 07:25:48,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 07:25:48,687 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [293934194] [2022-03-20 07:25:48,687 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [293934194] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 07:25:48,687 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 07:25:48,687 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-20 07:25:48,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645382587] [2022-03-20 07:25:48,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 07:25:48,688 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-20 07:25:48,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 07:25:48,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-20 07:25:48,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-03-20 07:25:48,689 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) [2022-03-20 07:25:49,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 07:25:49,870 INFO L93 Difference]: Finished difference Result 847 states and 1261 transitions. [2022-03-20 07:25:49,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-20 07:25:49,870 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 [2022-03-20 07:25:49,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 07:25:49,875 INFO L225 Difference]: With dead ends: 847 [2022-03-20 07:25:49,875 INFO L226 Difference]: Without dead ends: 846 [2022-03-20 07:25:49,875 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-03-20 07:25:49,876 INFO L913 BasicCegarLoop]: 851 mSDtfsCounter, 1498 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 927 mSolverCounterSat, 430 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1502 SdHoareTripleChecker+Valid, 1023 SdHoareTripleChecker+Invalid, 1357 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 430 IncrementalHoareTripleChecker+Valid, 927 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-03-20 07:25:49,876 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1502 Valid, 1023 Invalid, 1357 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [430 Valid, 927 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-03-20 07:25:49,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 846 states. [2022-03-20 07:25:49,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 846 to 664. [2022-03-20 07:25:49,949 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) [2022-03-20 07:25:49,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 664 states to 664 states and 964 transitions. [2022-03-20 07:25:49,952 INFO L78 Accepts]: Start accepts. Automaton has 664 states and 964 transitions. Word has length 25 [2022-03-20 07:25:49,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 07:25:49,953 INFO L478 AbstractCegarLoop]: Abstraction has 664 states and 964 transitions. [2022-03-20 07:25:49,953 INFO L479 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) [2022-03-20 07:25:49,953 INFO L276 IsEmpty]: Start isEmpty. Operand 664 states and 964 transitions. [2022-03-20 07:25:49,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-03-20 07:25:49,964 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 07:25:49,964 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 07:25:49,964 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-03-20 07:25:49,964 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 07:25:49,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 07:25:49,964 INFO L85 PathProgramCache]: Analyzing trace with hash -759392990, now seen corresponding path program 1 times [2022-03-20 07:25:49,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 07:25:49,965 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160931703] [2022-03-20 07:25:49,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 07:25:49,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 07:25:49,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:25:50,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 07:25:50,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:25:50,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 07:25:50,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:25:50,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 07:25:50,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:25:50,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 07:25:50,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 07:25:50,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160931703] [2022-03-20 07:25:50,114 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160931703] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 07:25:50,114 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 07:25:50,114 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-20 07:25:50,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403057788] [2022-03-20 07:25:50,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 07:25:50,115 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-20 07:25:50,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 07:25:50,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-20 07:25:50,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-03-20 07:25:50,115 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) [2022-03-20 07:25:51,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 07:25:51,550 INFO L93 Difference]: Finished difference Result 970 states and 1415 transitions. [2022-03-20 07:25:51,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-20 07:25:51,563 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 [2022-03-20 07:25:51,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 07:25:51,589 INFO L225 Difference]: With dead ends: 970 [2022-03-20 07:25:51,590 INFO L226 Difference]: Without dead ends: 970 [2022-03-20 07:25:51,590 INFO L912 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 [2022-03-20 07:25:51,591 INFO L913 BasicCegarLoop]: 725 mSDtfsCounter, 1121 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 1647 mSolverCounterSat, 250 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s 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, 1.3s IncrementalHoareTripleChecker+Time [2022-03-20 07:25:51,591 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1131 Valid, 886 Invalid, 1897 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [250 Valid, 1647 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-03-20 07:25:51,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 970 states. [2022-03-20 07:25:51,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 970 to 789. [2022-03-20 07:25:51,622 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) [2022-03-20 07:25:51,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 789 states to 789 states and 1135 transitions. [2022-03-20 07:25:51,626 INFO L78 Accepts]: Start accepts. Automaton has 789 states and 1135 transitions. Word has length 30 [2022-03-20 07:25:51,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 07:25:51,626 INFO L478 AbstractCegarLoop]: Abstraction has 789 states and 1135 transitions. [2022-03-20 07:25:51,627 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 3 states have internal predecessors, (19), 3 states have call successors, (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) [2022-03-20 07:25:51,627 INFO L276 IsEmpty]: Start isEmpty. Operand 789 states and 1135 transitions. [2022-03-20 07:25:51,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-03-20 07:25:51,630 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 07:25:51,630 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 07:25:51,630 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-03-20 07:25:51,630 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 07:25:51,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 07:25:51,631 INFO L85 PathProgramCache]: Analyzing trace with hash 1280175921, now seen corresponding path program 1 times [2022-03-20 07:25:51,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 07:25:51,631 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260081769] [2022-03-20 07:25:51,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 07:25:51,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 07:25:51,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:25:51,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 07:25:51,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:25:51,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 07:25:51,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:25:51,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 07:25:51,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:25:51,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 07:25:51,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 07:25:51,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260081769] [2022-03-20 07:25:51,757 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [260081769] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 07:25:51,757 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 07:25:51,757 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-20 07:25:51,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996329283] [2022-03-20 07:25:51,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 07:25:51,759 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-20 07:25:51,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 07:25:51,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-20 07:25:51,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-03-20 07:25:51,759 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) [2022-03-20 07:25:53,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 07:25:53,413 INFO L93 Difference]: Finished difference Result 1344 states and 2031 transitions. [2022-03-20 07:25:53,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-20 07:25:53,413 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 [2022-03-20 07:25:53,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 07:25:53,418 INFO L225 Difference]: With dead ends: 1344 [2022-03-20 07:25:53,418 INFO L226 Difference]: Without dead ends: 1344 [2022-03-20 07:25:53,419 INFO L912 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 [2022-03-20 07:25:53,420 INFO L913 BasicCegarLoop]: 1006 mSDtfsCounter, 1482 mSDsluCounter, 256 mSDsCounter, 0 mSdLazyCounter, 1324 mSolverCounterSat, 529 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s 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, 1.5s IncrementalHoareTripleChecker+Time [2022-03-20 07:25:53,420 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1485 Valid, 1262 Invalid, 1853 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [529 Valid, 1324 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-03-20 07:25:53,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1344 states. [2022-03-20 07:25:53,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1344 to 907. [2022-03-20 07:25:53,442 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) [2022-03-20 07:25:53,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 907 states to 907 states and 1348 transitions. [2022-03-20 07:25:53,445 INFO L78 Accepts]: Start accepts. Automaton has 907 states and 1348 transitions. Word has length 31 [2022-03-20 07:25:53,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 07:25:53,446 INFO L478 AbstractCegarLoop]: Abstraction has 907 states and 1348 transitions. [2022-03-20 07:25:53,446 INFO L479 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) [2022-03-20 07:25:53,446 INFO L276 IsEmpty]: Start isEmpty. Operand 907 states and 1348 transitions. [2022-03-20 07:25:53,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-03-20 07:25:53,447 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 07:25:53,447 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 07:25:53,447 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-03-20 07:25:53,447 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 07:25:53,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 07:25:53,447 INFO L85 PathProgramCache]: Analyzing trace with hash 998226604, now seen corresponding path program 1 times [2022-03-20 07:25:53,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 07:25:53,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241612330] [2022-03-20 07:25:53,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 07:25:53,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 07:25:53,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:25:53,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 07:25:53,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:25:53,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 07:25:53,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:25:53,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 07:25:53,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:25:53,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 07:25:53,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 07:25:53,589 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241612330] [2022-03-20 07:25:53,590 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [241612330] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 07:25:53,590 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 07:25:53,590 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-03-20 07:25:53,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191590141] [2022-03-20 07:25:53,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 07:25:53,590 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-20 07:25:53,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 07:25:53,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-20 07:25:53,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-03-20 07:25:53,591 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) [2022-03-20 07:25:55,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 07:25:55,100 INFO L93 Difference]: Finished difference Result 1046 states and 1583 transitions. [2022-03-20 07:25:55,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-20 07:25:55,101 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 [2022-03-20 07:25:55,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 07:25:55,104 INFO L225 Difference]: With dead ends: 1046 [2022-03-20 07:25:55,105 INFO L226 Difference]: Without dead ends: 1046 [2022-03-20 07:25:55,105 INFO L912 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 [2022-03-20 07:25:55,106 INFO L913 BasicCegarLoop]: 737 mSDtfsCounter, 3740 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 901 mSolverCounterSat, 1341 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3746 SdHoareTripleChecker+Valid, 884 SdHoareTripleChecker+Invalid, 2242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1341 IncrementalHoareTripleChecker+Valid, 901 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-03-20 07:25:55,106 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [3746 Valid, 884 Invalid, 2242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1341 Valid, 901 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-03-20 07:25:55,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1046 states. [2022-03-20 07:25:55,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1046 to 835. [2022-03-20 07:25:55,124 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) [2022-03-20 07:25:55,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 835 states to 835 states and 1203 transitions. [2022-03-20 07:25:55,126 INFO L78 Accepts]: Start accepts. Automaton has 835 states and 1203 transitions. Word has length 32 [2022-03-20 07:25:55,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 07:25:55,127 INFO L478 AbstractCegarLoop]: Abstraction has 835 states and 1203 transitions. [2022-03-20 07:25:55,127 INFO L479 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) [2022-03-20 07:25:55,127 INFO L276 IsEmpty]: Start isEmpty. Operand 835 states and 1203 transitions. [2022-03-20 07:25:55,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-03-20 07:25:55,128 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 07:25:55,128 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 07:25:55,128 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-03-20 07:25:55,128 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 07:25:55,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 07:25:55,129 INFO L85 PathProgramCache]: Analyzing trace with hash 936943045, now seen corresponding path program 1 times [2022-03-20 07:25:55,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 07:25:55,129 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389299482] [2022-03-20 07:25:55,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 07:25:55,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 07:25:55,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:25:55,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 07:25:55,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:25:55,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 07:25:55,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:25:55,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 07:25:55,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:25:55,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 07:25:55,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 07:25:55,215 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389299482] [2022-03-20 07:25:55,215 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [389299482] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 07:25:55,215 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 07:25:55,215 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-20 07:25:55,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259225200] [2022-03-20 07:25:55,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 07:25:55,216 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-20 07:25:55,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 07:25:55,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-20 07:25:55,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-03-20 07:25:55,216 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) [2022-03-20 07:25:56,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 07:25:56,491 INFO L93 Difference]: Finished difference Result 961 states and 1420 transitions. [2022-03-20 07:25:56,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-20 07:25:56,491 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 [2022-03-20 07:25:56,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 07:25:56,511 INFO L225 Difference]: With dead ends: 961 [2022-03-20 07:25:56,512 INFO L226 Difference]: Without dead ends: 961 [2022-03-20 07:25:56,512 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-03-20 07:25:56,515 INFO L913 BasicCegarLoop]: 713 mSDtfsCounter, 422 mSDsluCounter, 247 mSDsCounter, 0 mSdLazyCounter, 1466 mSolverCounterSat, 143 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 423 SdHoareTripleChecker+Valid, 960 SdHoareTripleChecker+Invalid, 1609 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 143 IncrementalHoareTripleChecker+Valid, 1466 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-03-20 07:25:56,517 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [423 Valid, 960 Invalid, 1609 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [143 Valid, 1466 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-03-20 07:25:56,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 961 states. [2022-03-20 07:25:56,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 961 to 834. [2022-03-20 07:25:56,534 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) [2022-03-20 07:25:56,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 834 states to 834 states and 1200 transitions. [2022-03-20 07:25:56,537 INFO L78 Accepts]: Start accepts. Automaton has 834 states and 1200 transitions. Word has length 36 [2022-03-20 07:25:56,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 07:25:56,537 INFO L478 AbstractCegarLoop]: Abstraction has 834 states and 1200 transitions. [2022-03-20 07:25:56,537 INFO L479 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) [2022-03-20 07:25:56,538 INFO L276 IsEmpty]: Start isEmpty. Operand 834 states and 1200 transitions. [2022-03-20 07:25:56,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-03-20 07:25:56,538 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 07:25:56,538 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 07:25:56,539 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-03-20 07:25:56,539 INFO L403 AbstractCegarLoop]: === Iteration 7 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 07:25:56,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 07:25:56,539 INFO L85 PathProgramCache]: Analyzing trace with hash -1670644950, now seen corresponding path program 1 times [2022-03-20 07:25:56,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 07:25:56,539 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972936516] [2022-03-20 07:25:56,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 07:25:56,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 07:25:56,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:25:56,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 07:25:56,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:25:56,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 07:25:56,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:25:56,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 07:25:56,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:25:56,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 07:25:56,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 07:25:56,682 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972936516] [2022-03-20 07:25:56,682 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [972936516] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 07:25:56,682 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 07:25:56,682 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-03-20 07:25:56,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160072240] [2022-03-20 07:25:56,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 07:25:56,683 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-20 07:25:56,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 07:25:56,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-20 07:25:56,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-03-20 07:25:56,683 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) [2022-03-20 07:25:58,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 07:25:58,363 INFO L93 Difference]: Finished difference Result 999 states and 1436 transitions. [2022-03-20 07:25:58,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-20 07:25:58,364 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 [2022-03-20 07:25:58,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 07:25:58,367 INFO L225 Difference]: With dead ends: 999 [2022-03-20 07:25:58,367 INFO L226 Difference]: Without dead ends: 999 [2022-03-20 07:25:58,367 INFO L912 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 [2022-03-20 07:25:58,369 INFO L913 BasicCegarLoop]: 821 mSDtfsCounter, 1114 mSDsluCounter, 467 mSDsCounter, 0 mSdLazyCounter, 2126 mSolverCounterSat, 382 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1116 SdHoareTripleChecker+Valid, 1288 SdHoareTripleChecker+Invalid, 2508 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 382 IncrementalHoareTripleChecker+Valid, 2126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-03-20 07:25:58,369 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1116 Valid, 1288 Invalid, 2508 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [382 Valid, 2126 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-03-20 07:25:58,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 999 states. [2022-03-20 07:25:58,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 999 to 736. [2022-03-20 07:25:58,382 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) [2022-03-20 07:25:58,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 736 states to 736 states and 1029 transitions. [2022-03-20 07:25:58,384 INFO L78 Accepts]: Start accepts. Automaton has 736 states and 1029 transitions. Word has length 39 [2022-03-20 07:25:58,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 07:25:58,384 INFO L478 AbstractCegarLoop]: Abstraction has 736 states and 1029 transitions. [2022-03-20 07:25:58,384 INFO L479 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) [2022-03-20 07:25:58,384 INFO L276 IsEmpty]: Start isEmpty. Operand 736 states and 1029 transitions. [2022-03-20 07:25:58,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-03-20 07:25:58,386 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 07:25:58,386 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 07:25:58,387 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-03-20 07:25:58,387 INFO L403 AbstractCegarLoop]: === Iteration 8 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 07:25:58,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 07:25:58,387 INFO L85 PathProgramCache]: Analyzing trace with hash -1528829481, now seen corresponding path program 1 times [2022-03-20 07:25:58,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 07:25:58,387 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363852575] [2022-03-20 07:25:58,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 07:25:58,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 07:25:58,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:25:58,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 07:25:58,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:25:58,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 07:25:58,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:25:58,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 07:25:58,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:25:58,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 07:25:58,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 07:25:58,511 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363852575] [2022-03-20 07:25:58,511 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1363852575] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 07:25:58,512 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 07:25:58,512 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-20 07:25:58,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734109867] [2022-03-20 07:25:58,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 07:25:58,512 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-20 07:25:58,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 07:25:58,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-20 07:25:58,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-03-20 07:25:58,513 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) [2022-03-20 07:25:59,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 07:25:59,412 INFO L93 Difference]: Finished difference Result 959 states and 1380 transitions. [2022-03-20 07:25:59,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-20 07:25:59,413 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 [2022-03-20 07:25:59,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 07:25:59,416 INFO L225 Difference]: With dead ends: 959 [2022-03-20 07:25:59,416 INFO L226 Difference]: Without dead ends: 959 [2022-03-20 07:25:59,416 INFO L912 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 [2022-03-20 07:25:59,416 INFO L913 BasicCegarLoop]: 672 mSDtfsCounter, 1857 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 570 mSolverCounterSat, 532 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1865 SdHoareTripleChecker+Valid, 754 SdHoareTripleChecker+Invalid, 1102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 532 IncrementalHoareTripleChecker+Valid, 570 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-20 07:25:59,417 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1865 Valid, 754 Invalid, 1102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [532 Valid, 570 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-20 07:25:59,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 959 states. [2022-03-20 07:25:59,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 959 to 762. [2022-03-20 07:25:59,428 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) [2022-03-20 07:25:59,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 762 states to 762 states and 1064 transitions. [2022-03-20 07:25:59,430 INFO L78 Accepts]: Start accepts. Automaton has 762 states and 1064 transitions. Word has length 40 [2022-03-20 07:25:59,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 07:25:59,431 INFO L478 AbstractCegarLoop]: Abstraction has 762 states and 1064 transitions. [2022-03-20 07:25:59,431 INFO L479 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) [2022-03-20 07:25:59,432 INFO L276 IsEmpty]: Start isEmpty. Operand 762 states and 1064 transitions. [2022-03-20 07:25:59,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-03-20 07:25:59,433 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 07:25:59,433 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 07:25:59,434 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-03-20 07:25:59,434 INFO L403 AbstractCegarLoop]: === Iteration 9 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 07:25:59,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 07:25:59,434 INFO L85 PathProgramCache]: Analyzing trace with hash 689414503, now seen corresponding path program 1 times [2022-03-20 07:25:59,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 07:25:59,434 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997427064] [2022-03-20 07:25:59,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 07:25:59,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 07:25:59,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:25:59,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 07:25:59,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:25:59,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 07:25:59,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:25:59,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 07:25:59,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:25:59,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-03-20 07:25:59,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:25:59,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 07:25:59,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 07:25:59,546 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1997427064] [2022-03-20 07:25:59,546 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1997427064] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 07:25:59,547 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 07:25:59,547 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-03-20 07:25:59,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342871675] [2022-03-20 07:25:59,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 07:25:59,548 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-20 07:25:59,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 07:25:59,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-20 07:25:59,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-03-20 07:25:59,548 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) [2022-03-20 07:26:00,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 07:26:00,442 INFO L93 Difference]: Finished difference Result 942 states and 1357 transitions. [2022-03-20 07:26:00,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-20 07:26:00,443 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 [2022-03-20 07:26:00,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 07:26:00,446 INFO L225 Difference]: With dead ends: 942 [2022-03-20 07:26:00,446 INFO L226 Difference]: Without dead ends: 942 [2022-03-20 07:26:00,447 INFO L912 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 [2022-03-20 07:26:00,447 INFO L913 BasicCegarLoop]: 791 mSDtfsCounter, 936 mSDsluCounter, 527 mSDsCounter, 0 mSdLazyCounter, 878 mSolverCounterSat, 297 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 942 SdHoareTripleChecker+Valid, 1318 SdHoareTripleChecker+Invalid, 1175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 297 IncrementalHoareTripleChecker+Valid, 878 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-20 07:26:00,447 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [942 Valid, 1318 Invalid, 1175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [297 Valid, 878 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-20 07:26:00,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 942 states. [2022-03-20 07:26:00,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 942 to 762. [2022-03-20 07:26:00,481 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) [2022-03-20 07:26:00,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 762 states to 762 states and 1063 transitions. [2022-03-20 07:26:00,483 INFO L78 Accepts]: Start accepts. Automaton has 762 states and 1063 transitions. Word has length 46 [2022-03-20 07:26:00,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 07:26:00,483 INFO L478 AbstractCegarLoop]: Abstraction has 762 states and 1063 transitions. [2022-03-20 07:26:00,483 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 3 states have internal predecessors, (32), 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) [2022-03-20 07:26:00,483 INFO L276 IsEmpty]: Start isEmpty. Operand 762 states and 1063 transitions. [2022-03-20 07:26:00,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-03-20 07:26:00,484 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 07:26:00,484 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 07:26:00,484 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-03-20 07:26:00,485 INFO L403 AbstractCegarLoop]: === Iteration 10 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 07:26:00,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 07:26:00,485 INFO L85 PathProgramCache]: Analyzing trace with hash -735623654, now seen corresponding path program 1 times [2022-03-20 07:26:00,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 07:26:00,486 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706022009] [2022-03-20 07:26:00,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 07:26:00,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 07:26:00,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:00,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 07:26:00,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:00,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 07:26:00,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:00,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 07:26:00,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:00,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-03-20 07:26:00,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:00,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 07:26:00,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 07:26:00,580 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706022009] [2022-03-20 07:26:00,580 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1706022009] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 07:26:00,580 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 07:26:00,580 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-03-20 07:26:00,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286165360] [2022-03-20 07:26:00,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 07:26:00,581 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-20 07:26:00,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 07:26:00,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-20 07:26:00,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-03-20 07:26:00,581 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) [2022-03-20 07:26:01,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 07:26:01,767 INFO L93 Difference]: Finished difference Result 897 states and 1299 transitions. [2022-03-20 07:26:01,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-20 07:26:01,767 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 [2022-03-20 07:26:01,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 07:26:01,771 INFO L225 Difference]: With dead ends: 897 [2022-03-20 07:26:01,771 INFO L226 Difference]: Without dead ends: 897 [2022-03-20 07:26:01,771 INFO L912 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 [2022-03-20 07:26:01,772 INFO L913 BasicCegarLoop]: 667 mSDtfsCounter, 1507 mSDsluCounter, 473 mSDsCounter, 0 mSdLazyCounter, 1152 mSolverCounterSat, 402 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1513 SdHoareTripleChecker+Valid, 1140 SdHoareTripleChecker+Invalid, 1554 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 402 IncrementalHoareTripleChecker+Valid, 1152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-03-20 07:26:01,773 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1513 Valid, 1140 Invalid, 1554 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [402 Valid, 1152 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-03-20 07:26:01,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 897 states. [2022-03-20 07:26:01,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 897 to 751. [2022-03-20 07:26:01,784 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) [2022-03-20 07:26:01,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 751 states to 751 states and 1050 transitions. [2022-03-20 07:26:01,785 INFO L78 Accepts]: Start accepts. Automaton has 751 states and 1050 transitions. Word has length 47 [2022-03-20 07:26:01,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 07:26:01,786 INFO L478 AbstractCegarLoop]: Abstraction has 751 states and 1050 transitions. [2022-03-20 07:26:01,786 INFO L479 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) [2022-03-20 07:26:01,786 INFO L276 IsEmpty]: Start isEmpty. Operand 751 states and 1050 transitions. [2022-03-20 07:26:01,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-03-20 07:26:01,787 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 07:26:01,787 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 07:26:01,788 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-03-20 07:26:01,788 INFO L403 AbstractCegarLoop]: === Iteration 11 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 07:26:01,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 07:26:01,788 INFO L85 PathProgramCache]: Analyzing trace with hash -1452242056, now seen corresponding path program 1 times [2022-03-20 07:26:01,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 07:26:01,788 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814873103] [2022-03-20 07:26:01,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 07:26:01,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 07:26:01,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:01,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 07:26:01,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:01,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 07:26:01,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:01,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 07:26:01,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:01,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-03-20 07:26:01,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:01,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-20 07:26:01,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:01,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 07:26:01,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 07:26:01,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814873103] [2022-03-20 07:26:01,968 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [814873103] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 07:26:01,969 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 07:26:01,969 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-03-20 07:26:01,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908869416] [2022-03-20 07:26:01,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 07:26:01,969 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-20 07:26:01,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 07:26:01,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-20 07:26:01,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2022-03-20 07:26:01,970 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) [2022-03-20 07:26:04,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 07:26:04,517 INFO L93 Difference]: Finished difference Result 1006 states and 1439 transitions. [2022-03-20 07:26:04,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-03-20 07:26:04,518 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 [2022-03-20 07:26:04,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 07:26:04,521 INFO L225 Difference]: With dead ends: 1006 [2022-03-20 07:26:04,521 INFO L226 Difference]: Without dead ends: 1006 [2022-03-20 07:26:04,521 INFO L912 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 [2022-03-20 07:26:04,521 INFO L913 BasicCegarLoop]: 767 mSDtfsCounter, 1432 mSDsluCounter, 1281 mSDsCounter, 0 mSdLazyCounter, 3360 mSolverCounterSat, 443 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1460 SdHoareTripleChecker+Valid, 2048 SdHoareTripleChecker+Invalid, 3803 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 443 IncrementalHoareTripleChecker+Valid, 3360 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-03-20 07:26:04,522 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1460 Valid, 2048 Invalid, 3803 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [443 Valid, 3360 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-03-20 07:26:04,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1006 states. [2022-03-20 07:26:04,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1006 to 794. [2022-03-20 07:26:04,533 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) [2022-03-20 07:26:04,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 794 states to 794 states and 1111 transitions. [2022-03-20 07:26:04,534 INFO L78 Accepts]: Start accepts. Automaton has 794 states and 1111 transitions. Word has length 48 [2022-03-20 07:26:04,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 07:26:04,535 INFO L478 AbstractCegarLoop]: Abstraction has 794 states and 1111 transitions. [2022-03-20 07:26:04,535 INFO L479 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) [2022-03-20 07:26:04,535 INFO L276 IsEmpty]: Start isEmpty. Operand 794 states and 1111 transitions. [2022-03-20 07:26:04,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-03-20 07:26:04,536 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 07:26:04,536 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 07:26:04,536 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-03-20 07:26:04,536 INFO L403 AbstractCegarLoop]: === Iteration 12 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 07:26:04,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 07:26:04,536 INFO L85 PathProgramCache]: Analyzing trace with hash -1568241764, now seen corresponding path program 1 times [2022-03-20 07:26:04,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 07:26:04,537 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507721644] [2022-03-20 07:26:04,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 07:26:04,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 07:26:04,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:04,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 07:26:04,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:04,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 07:26:04,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:04,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 07:26:04,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:04,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-03-20 07:26:04,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:04,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-20 07:26:04,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:04,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 07:26:04,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 07:26:04,726 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507721644] [2022-03-20 07:26:04,726 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [507721644] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 07:26:04,726 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 07:26:04,726 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-03-20 07:26:04,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203063194] [2022-03-20 07:26:04,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 07:26:04,727 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-20 07:26:04,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 07:26:04,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-20 07:26:04,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-03-20 07:26:04,727 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) [2022-03-20 07:26:06,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 07:26:06,210 INFO L93 Difference]: Finished difference Result 924 states and 1335 transitions. [2022-03-20 07:26:06,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-20 07:26:06,210 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 [2022-03-20 07:26:06,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 07:26:06,213 INFO L225 Difference]: With dead ends: 924 [2022-03-20 07:26:06,213 INFO L226 Difference]: Without dead ends: 924 [2022-03-20 07:26:06,214 INFO L912 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 [2022-03-20 07:26:06,214 INFO L913 BasicCegarLoop]: 652 mSDtfsCounter, 1534 mSDsluCounter, 802 mSDsCounter, 0 mSdLazyCounter, 1778 mSolverCounterSat, 390 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1545 SdHoareTripleChecker+Valid, 1454 SdHoareTripleChecker+Invalid, 2168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 390 IncrementalHoareTripleChecker+Valid, 1778 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-03-20 07:26:06,214 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1545 Valid, 1454 Invalid, 2168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [390 Valid, 1778 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-03-20 07:26:06,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 924 states. [2022-03-20 07:26:06,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 924 to 797. [2022-03-20 07:26:06,226 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) [2022-03-20 07:26:06,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 797 states to 797 states and 1115 transitions. [2022-03-20 07:26:06,228 INFO L78 Accepts]: Start accepts. Automaton has 797 states and 1115 transitions. Word has length 50 [2022-03-20 07:26:06,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 07:26:06,228 INFO L478 AbstractCegarLoop]: Abstraction has 797 states and 1115 transitions. [2022-03-20 07:26:06,228 INFO L479 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) [2022-03-20 07:26:06,228 INFO L276 IsEmpty]: Start isEmpty. Operand 797 states and 1115 transitions. [2022-03-20 07:26:06,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-03-20 07:26:06,230 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 07:26:06,230 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 07:26:06,230 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-03-20 07:26:06,230 INFO L403 AbstractCegarLoop]: === Iteration 13 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 07:26:06,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 07:26:06,230 INFO L85 PathProgramCache]: Analyzing trace with hash 1729653179, now seen corresponding path program 1 times [2022-03-20 07:26:06,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 07:26:06,230 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044055629] [2022-03-20 07:26:06,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 07:26:06,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 07:26:06,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:06,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 07:26:06,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:06,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 07:26:06,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:06,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 07:26:06,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:06,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-03-20 07:26:06,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:06,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-20 07:26:06,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:06,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 07:26:06,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 07:26:06,376 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044055629] [2022-03-20 07:26:06,376 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1044055629] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 07:26:06,376 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 07:26:06,376 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-20 07:26:06,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571334563] [2022-03-20 07:26:06,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 07:26:06,377 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-20 07:26:06,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 07:26:06,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-20 07:26:06,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2022-03-20 07:26:06,377 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) [2022-03-20 07:26:08,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 07:26:08,440 INFO L93 Difference]: Finished difference Result 914 states and 1320 transitions. [2022-03-20 07:26:08,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-20 07:26:08,441 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 [2022-03-20 07:26:08,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 07:26:08,444 INFO L225 Difference]: With dead ends: 914 [2022-03-20 07:26:08,444 INFO L226 Difference]: Without dead ends: 914 [2022-03-20 07:26:08,444 INFO L912 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 [2022-03-20 07:26:08,444 INFO L913 BasicCegarLoop]: 652 mSDtfsCounter, 1576 mSDsluCounter, 1166 mSDsCounter, 0 mSdLazyCounter, 2993 mSolverCounterSat, 411 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1585 SdHoareTripleChecker+Valid, 1818 SdHoareTripleChecker+Invalid, 3404 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 411 IncrementalHoareTripleChecker+Valid, 2993 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-03-20 07:26:08,444 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1585 Valid, 1818 Invalid, 3404 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [411 Valid, 2993 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-03-20 07:26:08,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 914 states. [2022-03-20 07:26:08,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 914 to 792. [2022-03-20 07:26:08,455 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) [2022-03-20 07:26:08,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 792 states to 792 states and 1105 transitions. [2022-03-20 07:26:08,456 INFO L78 Accepts]: Start accepts. Automaton has 792 states and 1105 transitions. Word has length 50 [2022-03-20 07:26:08,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 07:26:08,456 INFO L478 AbstractCegarLoop]: Abstraction has 792 states and 1105 transitions. [2022-03-20 07:26:08,457 INFO L479 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) [2022-03-20 07:26:08,457 INFO L276 IsEmpty]: Start isEmpty. Operand 792 states and 1105 transitions. [2022-03-20 07:26:08,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-03-20 07:26:08,458 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 07:26:08,458 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 07:26:08,458 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-03-20 07:26:08,458 INFO L403 AbstractCegarLoop]: === Iteration 14 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 07:26:08,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 07:26:08,458 INFO L85 PathProgramCache]: Analyzing trace with hash -111891045, now seen corresponding path program 1 times [2022-03-20 07:26:08,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 07:26:08,458 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305007714] [2022-03-20 07:26:08,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 07:26:08,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 07:26:08,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:08,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 07:26:08,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:08,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 07:26:08,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:08,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 07:26:08,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:08,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-03-20 07:26:08,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:08,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-20 07:26:08,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:08,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 07:26:08,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 07:26:08,567 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305007714] [2022-03-20 07:26:08,567 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1305007714] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 07:26:08,567 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 07:26:08,567 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-03-20 07:26:08,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780603118] [2022-03-20 07:26:08,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 07:26:08,568 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-20 07:26:08,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 07:26:08,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-20 07:26:08,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-03-20 07:26:08,568 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) [2022-03-20 07:26:10,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 07:26:10,313 INFO L93 Difference]: Finished difference Result 1074 states and 1532 transitions. [2022-03-20 07:26:10,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-20 07:26:10,313 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 [2022-03-20 07:26:10,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 07:26:10,316 INFO L225 Difference]: With dead ends: 1074 [2022-03-20 07:26:10,316 INFO L226 Difference]: Without dead ends: 1074 [2022-03-20 07:26:10,317 INFO L912 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 [2022-03-20 07:26:10,317 INFO L913 BasicCegarLoop]: 783 mSDtfsCounter, 523 mSDsluCounter, 549 mSDsCounter, 0 mSdLazyCounter, 1807 mSolverCounterSat, 157 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 526 SdHoareTripleChecker+Valid, 1332 SdHoareTripleChecker+Invalid, 1964 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 157 IncrementalHoareTripleChecker+Valid, 1807 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-03-20 07:26:10,317 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [526 Valid, 1332 Invalid, 1964 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [157 Valid, 1807 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-03-20 07:26:10,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1074 states. [2022-03-20 07:26:10,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1074 to 848. [2022-03-20 07:26:10,328 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) [2022-03-20 07:26:10,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 848 states to 848 states and 1165 transitions. [2022-03-20 07:26:10,330 INFO L78 Accepts]: Start accepts. Automaton has 848 states and 1165 transitions. Word has length 50 [2022-03-20 07:26:10,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 07:26:10,330 INFO L478 AbstractCegarLoop]: Abstraction has 848 states and 1165 transitions. [2022-03-20 07:26:10,330 INFO L479 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) [2022-03-20 07:26:10,330 INFO L276 IsEmpty]: Start isEmpty. Operand 848 states and 1165 transitions. [2022-03-20 07:26:10,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-03-20 07:26:10,331 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 07:26:10,331 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 07:26:10,332 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-03-20 07:26:10,332 INFO L403 AbstractCegarLoop]: === Iteration 15 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 07:26:10,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 07:26:10,332 INFO L85 PathProgramCache]: Analyzing trace with hash 1040673977, now seen corresponding path program 1 times [2022-03-20 07:26:10,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 07:26:10,332 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090603809] [2022-03-20 07:26:10,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 07:26:10,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 07:26:10,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:10,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 07:26:10,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:10,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 07:26:10,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:10,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 07:26:10,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:10,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-03-20 07:26:10,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:10,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-03-20 07:26:10,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:10,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 07:26:10,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 07:26:10,438 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090603809] [2022-03-20 07:26:10,438 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2090603809] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 07:26:10,438 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 07:26:10,438 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-20 07:26:10,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125979549] [2022-03-20 07:26:10,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 07:26:10,438 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-20 07:26:10,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 07:26:10,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-20 07:26:10,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-03-20 07:26:10,439 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) [2022-03-20 07:26:11,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 07:26:11,957 INFO L93 Difference]: Finished difference Result 937 states and 1338 transitions. [2022-03-20 07:26:11,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-20 07:26:11,957 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 [2022-03-20 07:26:11,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 07:26:11,960 INFO L225 Difference]: With dead ends: 937 [2022-03-20 07:26:11,960 INFO L226 Difference]: Without dead ends: 937 [2022-03-20 07:26:11,960 INFO L912 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 [2022-03-20 07:26:11,961 INFO L913 BasicCegarLoop]: 641 mSDtfsCounter, 1355 mSDsluCounter, 512 mSDsCounter, 0 mSdLazyCounter, 1688 mSolverCounterSat, 497 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1388 SdHoareTripleChecker+Valid, 1153 SdHoareTripleChecker+Invalid, 2185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 497 IncrementalHoareTripleChecker+Valid, 1688 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-03-20 07:26:11,961 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1388 Valid, 1153 Invalid, 2185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [497 Valid, 1688 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-03-20 07:26:11,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 937 states. [2022-03-20 07:26:11,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 937 to 817. [2022-03-20 07:26:11,973 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) [2022-03-20 07:26:11,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 817 states to 817 states and 1125 transitions. [2022-03-20 07:26:11,975 INFO L78 Accepts]: Start accepts. Automaton has 817 states and 1125 transitions. Word has length 54 [2022-03-20 07:26:11,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 07:26:11,975 INFO L478 AbstractCegarLoop]: Abstraction has 817 states and 1125 transitions. [2022-03-20 07:26:11,975 INFO L479 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) [2022-03-20 07:26:11,975 INFO L276 IsEmpty]: Start isEmpty. Operand 817 states and 1125 transitions. [2022-03-20 07:26:11,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-03-20 07:26:11,976 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 07:26:11,976 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 07:26:11,976 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-03-20 07:26:11,976 INFO L403 AbstractCegarLoop]: === Iteration 16 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 07:26:11,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 07:26:11,977 INFO L85 PathProgramCache]: Analyzing trace with hash -1255093406, now seen corresponding path program 1 times [2022-03-20 07:26:11,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 07:26:11,977 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999926557] [2022-03-20 07:26:11,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 07:26:11,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 07:26:11,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:12,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 07:26:12,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:12,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 07:26:12,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:12,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 07:26:12,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:12,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-20 07:26:12,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:12,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-20 07:26:12,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:12,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 07:26:12,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:12,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 07:26:12,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 07:26:12,111 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1999926557] [2022-03-20 07:26:12,111 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1999926557] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 07:26:12,111 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 07:26:12,111 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-03-20 07:26:12,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89517410] [2022-03-20 07:26:12,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 07:26:12,111 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-20 07:26:12,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 07:26:12,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-20 07:26:12,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2022-03-20 07:26:12,112 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) [2022-03-20 07:26:12,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 07:26:12,995 INFO L93 Difference]: Finished difference Result 960 states and 1364 transitions. [2022-03-20 07:26:12,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-20 07:26:12,995 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 [2022-03-20 07:26:12,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 07:26:13,000 INFO L225 Difference]: With dead ends: 960 [2022-03-20 07:26:13,000 INFO L226 Difference]: Without dead ends: 960 [2022-03-20 07:26:13,000 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2022-03-20 07:26:13,001 INFO L913 BasicCegarLoop]: 694 mSDtfsCounter, 1541 mSDsluCounter, 671 mSDsCounter, 0 mSdLazyCounter, 1068 mSolverCounterSat, 555 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1544 SdHoareTripleChecker+Valid, 1365 SdHoareTripleChecker+Invalid, 1623 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 555 IncrementalHoareTripleChecker+Valid, 1068 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-20 07:26:13,002 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1544 Valid, 1365 Invalid, 1623 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [555 Valid, 1068 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-20 07:26:13,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 960 states. [2022-03-20 07:26:13,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 960 to 836. [2022-03-20 07:26:13,032 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) [2022-03-20 07:26:13,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 836 states to 836 states and 1148 transitions. [2022-03-20 07:26:13,033 INFO L78 Accepts]: Start accepts. Automaton has 836 states and 1148 transitions. Word has length 52 [2022-03-20 07:26:13,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 07:26:13,033 INFO L478 AbstractCegarLoop]: Abstraction has 836 states and 1148 transitions. [2022-03-20 07:26:13,033 INFO L479 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) [2022-03-20 07:26:13,034 INFO L276 IsEmpty]: Start isEmpty. Operand 836 states and 1148 transitions. [2022-03-20 07:26:13,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-03-20 07:26:13,035 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 07:26:13,035 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 07:26:13,035 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-03-20 07:26:13,035 INFO L403 AbstractCegarLoop]: === Iteration 17 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 07:26:13,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 07:26:13,035 INFO L85 PathProgramCache]: Analyzing trace with hash 856883353, now seen corresponding path program 1 times [2022-03-20 07:26:13,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 07:26:13,035 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233481022] [2022-03-20 07:26:13,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 07:26:13,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 07:26:13,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:13,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 07:26:13,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:13,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 07:26:13,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:13,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 07:26:13,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:13,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-03-20 07:26:13,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:13,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-20 07:26:13,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:13,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 07:26:13,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 07:26:13,219 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233481022] [2022-03-20 07:26:13,219 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1233481022] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 07:26:13,219 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 07:26:13,219 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-20 07:26:13,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366294707] [2022-03-20 07:26:13,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 07:26:13,220 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-20 07:26:13,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 07:26:13,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-20 07:26:13,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2022-03-20 07:26:13,220 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) [2022-03-20 07:26:14,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 07:26:14,946 INFO L93 Difference]: Finished difference Result 978 states and 1385 transitions. [2022-03-20 07:26:14,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-20 07:26:14,946 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 [2022-03-20 07:26:14,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 07:26:14,949 INFO L225 Difference]: With dead ends: 978 [2022-03-20 07:26:14,949 INFO L226 Difference]: Without dead ends: 977 [2022-03-20 07:26:14,949 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2022-03-20 07:26:14,950 INFO L913 BasicCegarLoop]: 707 mSDtfsCounter, 724 mSDsluCounter, 1767 mSDsCounter, 0 mSdLazyCounter, 4259 mSolverCounterSat, 277 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 726 SdHoareTripleChecker+Valid, 2474 SdHoareTripleChecker+Invalid, 4536 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 277 IncrementalHoareTripleChecker+Valid, 4259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-03-20 07:26:14,950 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [726 Valid, 2474 Invalid, 4536 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [277 Valid, 4259 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-03-20 07:26:14,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 977 states. [2022-03-20 07:26:14,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 977 to 855. [2022-03-20 07:26:14,961 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) [2022-03-20 07:26:14,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 855 states to 855 states and 1169 transitions. [2022-03-20 07:26:14,962 INFO L78 Accepts]: Start accepts. Automaton has 855 states and 1169 transitions. Word has length 51 [2022-03-20 07:26:14,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 07:26:14,962 INFO L478 AbstractCegarLoop]: Abstraction has 855 states and 1169 transitions. [2022-03-20 07:26:14,962 INFO L479 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) [2022-03-20 07:26:14,962 INFO L276 IsEmpty]: Start isEmpty. Operand 855 states and 1169 transitions. [2022-03-20 07:26:14,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-03-20 07:26:14,964 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 07:26:14,964 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 07:26:14,964 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-03-20 07:26:14,964 INFO L403 AbstractCegarLoop]: === Iteration 18 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 07:26:14,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 07:26:14,964 INFO L85 PathProgramCache]: Analyzing trace with hash 856915097, now seen corresponding path program 1 times [2022-03-20 07:26:14,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 07:26:14,964 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71014990] [2022-03-20 07:26:14,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 07:26:14,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 07:26:14,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:15,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 07:26:15,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:15,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 07:26:15,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:15,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 07:26:15,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:15,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-03-20 07:26:15,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:15,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-20 07:26:15,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:15,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 07:26:15,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 07:26:15,094 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71014990] [2022-03-20 07:26:15,094 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [71014990] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 07:26:15,094 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 07:26:15,094 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-20 07:26:15,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784455012] [2022-03-20 07:26:15,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 07:26:15,095 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-20 07:26:15,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 07:26:15,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-20 07:26:15,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2022-03-20 07:26:15,095 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) [2022-03-20 07:26:16,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 07:26:16,441 INFO L93 Difference]: Finished difference Result 987 states and 1396 transitions. [2022-03-20 07:26:16,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-20 07:26:16,442 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 [2022-03-20 07:26:16,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 07:26:16,445 INFO L225 Difference]: With dead ends: 987 [2022-03-20 07:26:16,446 INFO L226 Difference]: Without dead ends: 966 [2022-03-20 07:26:16,446 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2022-03-20 07:26:16,450 INFO L913 BasicCegarLoop]: 706 mSDtfsCounter, 1084 mSDsluCounter, 1652 mSDsCounter, 0 mSdLazyCounter, 3508 mSolverCounterSat, 415 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1086 SdHoareTripleChecker+Valid, 2358 SdHoareTripleChecker+Invalid, 3923 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 415 IncrementalHoareTripleChecker+Valid, 3508 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-03-20 07:26:16,450 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1086 Valid, 2358 Invalid, 3923 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [415 Valid, 3508 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-03-20 07:26:16,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 966 states. [2022-03-20 07:26:16,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 966 to 842. [2022-03-20 07:26:16,469 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) [2022-03-20 07:26:16,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 842 states to 842 states and 1155 transitions. [2022-03-20 07:26:16,470 INFO L78 Accepts]: Start accepts. Automaton has 842 states and 1155 transitions. Word has length 51 [2022-03-20 07:26:16,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 07:26:16,470 INFO L478 AbstractCegarLoop]: Abstraction has 842 states and 1155 transitions. [2022-03-20 07:26:16,470 INFO L479 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) [2022-03-20 07:26:16,470 INFO L276 IsEmpty]: Start isEmpty. Operand 842 states and 1155 transitions. [2022-03-20 07:26:16,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-03-20 07:26:16,472 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 07:26:16,472 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 07:26:16,472 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-03-20 07:26:16,472 INFO L403 AbstractCegarLoop]: === Iteration 19 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 07:26:16,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 07:26:16,472 INFO L85 PathProgramCache]: Analyzing trace with hash -222651470, now seen corresponding path program 1 times [2022-03-20 07:26:16,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 07:26:16,472 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636764037] [2022-03-20 07:26:16,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 07:26:16,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 07:26:16,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:16,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 07:26:16,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:16,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 07:26:16,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:16,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 07:26:16,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:16,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-20 07:26:16,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:16,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-20 07:26:16,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:16,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 07:26:16,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:16,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 07:26:16,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 07:26:16,652 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636764037] [2022-03-20 07:26:16,652 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [636764037] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 07:26:16,652 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 07:26:16,652 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-03-20 07:26:16,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231541819] [2022-03-20 07:26:16,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 07:26:16,653 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-03-20 07:26:16,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 07:26:16,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-03-20 07:26:16,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2022-03-20 07:26:16,653 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) [2022-03-20 07:26:18,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 07:26:18,320 INFO L93 Difference]: Finished difference Result 968 states and 1372 transitions. [2022-03-20 07:26:18,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-20 07:26:18,320 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 [2022-03-20 07:26:18,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 07:26:18,332 INFO L225 Difference]: With dead ends: 968 [2022-03-20 07:26:18,332 INFO L226 Difference]: Without dead ends: 968 [2022-03-20 07:26:18,332 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=106, Invalid=274, Unknown=0, NotChecked=0, Total=380 [2022-03-20 07:26:18,333 INFO L913 BasicCegarLoop]: 659 mSDtfsCounter, 1967 mSDsluCounter, 783 mSDsCounter, 0 mSdLazyCounter, 2409 mSolverCounterSat, 654 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1993 SdHoareTripleChecker+Valid, 1442 SdHoareTripleChecker+Invalid, 3063 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 654 IncrementalHoareTripleChecker+Valid, 2409 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-03-20 07:26:18,335 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1993 Valid, 1442 Invalid, 3063 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [654 Valid, 2409 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-03-20 07:26:18,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 968 states. [2022-03-20 07:26:18,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 968 to 842. [2022-03-20 07:26:18,356 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) [2022-03-20 07:26:18,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 842 states to 842 states and 1154 transitions. [2022-03-20 07:26:18,358 INFO L78 Accepts]: Start accepts. Automaton has 842 states and 1154 transitions. Word has length 53 [2022-03-20 07:26:18,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 07:26:18,358 INFO L478 AbstractCegarLoop]: Abstraction has 842 states and 1154 transitions. [2022-03-20 07:26:18,358 INFO L479 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) [2022-03-20 07:26:18,358 INFO L276 IsEmpty]: Start isEmpty. Operand 842 states and 1154 transitions. [2022-03-20 07:26:18,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-03-20 07:26:18,362 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 07:26:18,362 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 07:26:18,362 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-03-20 07:26:18,362 INFO L403 AbstractCegarLoop]: === Iteration 20 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 07:26:18,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 07:26:18,362 INFO L85 PathProgramCache]: Analyzing trace with hash 179775437, now seen corresponding path program 1 times [2022-03-20 07:26:18,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 07:26:18,363 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359833639] [2022-03-20 07:26:18,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 07:26:18,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 07:26:18,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:18,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 07:26:18,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:18,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 07:26:18,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:18,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 07:26:18,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:18,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-03-20 07:26:18,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:18,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-20 07:26:18,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:18,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 07:26:18,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 07:26:18,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359833639] [2022-03-20 07:26:18,496 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1359833639] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 07:26:18,496 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 07:26:18,496 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-03-20 07:26:18,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576466023] [2022-03-20 07:26:18,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 07:26:18,496 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-20 07:26:18,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 07:26:18,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-20 07:26:18,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-03-20 07:26:18,497 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) [2022-03-20 07:26:20,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 07:26:20,309 INFO L93 Difference]: Finished difference Result 975 states and 1378 transitions. [2022-03-20 07:26:20,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-20 07:26:20,309 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 [2022-03-20 07:26:20,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 07:26:20,312 INFO L225 Difference]: With dead ends: 975 [2022-03-20 07:26:20,312 INFO L226 Difference]: Without dead ends: 943 [2022-03-20 07:26:20,312 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=86, Invalid=186, Unknown=0, NotChecked=0, Total=272 [2022-03-20 07:26:20,312 INFO L913 BasicCegarLoop]: 659 mSDtfsCounter, 1246 mSDsluCounter, 607 mSDsCounter, 0 mSdLazyCounter, 1905 mSolverCounterSat, 317 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1261 SdHoareTripleChecker+Valid, 1266 SdHoareTripleChecker+Invalid, 2222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 317 IncrementalHoareTripleChecker+Valid, 1905 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-03-20 07:26:20,313 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1261 Valid, 1266 Invalid, 2222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [317 Valid, 1905 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-03-20 07:26:20,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 943 states. [2022-03-20 07:26:20,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 943 to 815. [2022-03-20 07:26:20,326 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) [2022-03-20 07:26:20,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 815 states to 815 states and 1124 transitions. [2022-03-20 07:26:20,327 INFO L78 Accepts]: Start accepts. Automaton has 815 states and 1124 transitions. Word has length 52 [2022-03-20 07:26:20,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 07:26:20,328 INFO L478 AbstractCegarLoop]: Abstraction has 815 states and 1124 transitions. [2022-03-20 07:26:20,328 INFO L479 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) [2022-03-20 07:26:20,328 INFO L276 IsEmpty]: Start isEmpty. Operand 815 states and 1124 transitions. [2022-03-20 07:26:20,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-03-20 07:26:20,329 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 07:26:20,329 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 07:26:20,329 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-03-20 07:26:20,329 INFO L403 AbstractCegarLoop]: === Iteration 21 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 07:26:20,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 07:26:20,329 INFO L85 PathProgramCache]: Analyzing trace with hash 760121073, now seen corresponding path program 1 times [2022-03-20 07:26:20,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 07:26:20,330 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146530122] [2022-03-20 07:26:20,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 07:26:20,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 07:26:20,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:20,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 07:26:20,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:20,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 07:26:20,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:20,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 07:26:20,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:20,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-20 07:26:20,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:20,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-20 07:26:20,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:20,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 07:26:20,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:20,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 07:26:20,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 07:26:20,548 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146530122] [2022-03-20 07:26:20,548 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [146530122] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 07:26:20,548 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 07:26:20,548 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-03-20 07:26:20,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525745927] [2022-03-20 07:26:20,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 07:26:20,549 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-03-20 07:26:20,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 07:26:20,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-03-20 07:26:20,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2022-03-20 07:26:20,550 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) [2022-03-20 07:26:21,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 07:26:21,984 INFO L93 Difference]: Finished difference Result 939 states and 1339 transitions. [2022-03-20 07:26:21,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-20 07:26:21,985 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 [2022-03-20 07:26:21,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 07:26:21,987 INFO L225 Difference]: With dead ends: 939 [2022-03-20 07:26:21,987 INFO L226 Difference]: Without dead ends: 939 [2022-03-20 07:26:21,988 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=106, Invalid=274, Unknown=0, NotChecked=0, Total=380 [2022-03-20 07:26:21,988 INFO L913 BasicCegarLoop]: 630 mSDtfsCounter, 2257 mSDsluCounter, 553 mSDsCounter, 0 mSdLazyCounter, 1447 mSolverCounterSat, 790 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2283 SdHoareTripleChecker+Valid, 1183 SdHoareTripleChecker+Invalid, 2237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 790 IncrementalHoareTripleChecker+Valid, 1447 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-03-20 07:26:21,988 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [2283 Valid, 1183 Invalid, 2237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [790 Valid, 1447 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-03-20 07:26:21,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 939 states. [2022-03-20 07:26:21,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 939 to 815. [2022-03-20 07:26:21,998 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) [2022-03-20 07:26:22,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 815 states to 815 states and 1123 transitions. [2022-03-20 07:26:22,000 INFO L78 Accepts]: Start accepts. Automaton has 815 states and 1123 transitions. Word has length 54 [2022-03-20 07:26:22,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 07:26:22,000 INFO L478 AbstractCegarLoop]: Abstraction has 815 states and 1123 transitions. [2022-03-20 07:26:22,000 INFO L479 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) [2022-03-20 07:26:22,000 INFO L276 IsEmpty]: Start isEmpty. Operand 815 states and 1123 transitions. [2022-03-20 07:26:22,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-03-20 07:26:22,002 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 07:26:22,002 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 07:26:22,002 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-03-20 07:26:22,002 INFO L403 AbstractCegarLoop]: === Iteration 22 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 07:26:22,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 07:26:22,002 INFO L85 PathProgramCache]: Analyzing trace with hash 1504848646, now seen corresponding path program 1 times [2022-03-20 07:26:22,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 07:26:22,003 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730798167] [2022-03-20 07:26:22,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 07:26:22,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 07:26:22,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:22,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 07:26:22,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:22,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 07:26:22,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:22,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 07:26:22,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:22,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-20 07:26:22,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:22,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-20 07:26:22,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:22,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 07:26:22,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:22,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 07:26:22,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 07:26:22,197 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730798167] [2022-03-20 07:26:22,197 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [730798167] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 07:26:22,197 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 07:26:22,197 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-03-20 07:26:22,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672369514] [2022-03-20 07:26:22,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 07:26:22,197 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-03-20 07:26:22,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 07:26:22,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-03-20 07:26:22,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2022-03-20 07:26:22,198 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) [2022-03-20 07:26:24,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 07:26:24,291 INFO L93 Difference]: Finished difference Result 963 states and 1369 transitions. [2022-03-20 07:26:24,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-03-20 07:26:24,293 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 [2022-03-20 07:26:24,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 07:26:24,296 INFO L225 Difference]: With dead ends: 963 [2022-03-20 07:26:24,296 INFO L226 Difference]: Without dead ends: 926 [2022-03-20 07:26:24,296 INFO L912 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 [2022-03-20 07:26:24,297 INFO L913 BasicCegarLoop]: 678 mSDtfsCounter, 389 mSDsluCounter, 2024 mSDsCounter, 0 mSdLazyCounter, 5399 mSolverCounterSat, 164 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 392 SdHoareTripleChecker+Valid, 2702 SdHoareTripleChecker+Invalid, 5563 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 164 IncrementalHoareTripleChecker+Valid, 5399 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-03-20 07:26:24,297 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [392 Valid, 2702 Invalid, 5563 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [164 Valid, 5399 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-03-20 07:26:24,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 926 states. [2022-03-20 07:26:24,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 926 to 806. [2022-03-20 07:26:24,307 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) [2022-03-20 07:26:24,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 806 states to 806 states and 1099 transitions. [2022-03-20 07:26:24,308 INFO L78 Accepts]: Start accepts. Automaton has 806 states and 1099 transitions. Word has length 55 [2022-03-20 07:26:24,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 07:26:24,309 INFO L478 AbstractCegarLoop]: Abstraction has 806 states and 1099 transitions. [2022-03-20 07:26:24,309 INFO L479 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) [2022-03-20 07:26:24,309 INFO L276 IsEmpty]: Start isEmpty. Operand 806 states and 1099 transitions. [2022-03-20 07:26:24,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-03-20 07:26:24,310 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 07:26:24,310 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 07:26:24,310 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-03-20 07:26:24,310 INFO L403 AbstractCegarLoop]: === Iteration 23 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 07:26:24,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 07:26:24,311 INFO L85 PathProgramCache]: Analyzing trace with hash -755849646, now seen corresponding path program 1 times [2022-03-20 07:26:24,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 07:26:24,311 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939034916] [2022-03-20 07:26:24,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 07:26:24,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 07:26:24,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:24,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 07:26:24,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:24,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 07:26:24,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:24,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 07:26:24,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:24,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-03-20 07:26:24,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:24,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-20 07:26:24,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:24,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-20 07:26:24,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:24,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 07:26:24,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 07:26:24,574 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1939034916] [2022-03-20 07:26:24,574 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1939034916] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 07:26:24,574 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 07:26:24,574 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-03-20 07:26:24,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740708718] [2022-03-20 07:26:24,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 07:26:24,575 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-03-20 07:26:24,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 07:26:24,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-03-20 07:26:24,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2022-03-20 07:26:24,575 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) [2022-03-20 07:26:26,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 07:26:26,586 INFO L93 Difference]: Finished difference Result 939 states and 1323 transitions. [2022-03-20 07:26:26,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-20 07:26:26,587 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.8) internal successors, (42), 7 states have internal predecessors, (42), 2 states have call successors, (8), 7 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 1 states have call successors, (6) Word has length 56 [2022-03-20 07:26:26,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 07:26:26,589 INFO L225 Difference]: With dead ends: 939 [2022-03-20 07:26:26,589 INFO L226 Difference]: Without dead ends: 924 [2022-03-20 07:26:26,590 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2022-03-20 07:26:26,590 INFO L913 BasicCegarLoop]: 660 mSDtfsCounter, 671 mSDsluCounter, 1957 mSDsCounter, 0 mSdLazyCounter, 4337 mSolverCounterSat, 272 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 673 SdHoareTripleChecker+Valid, 2617 SdHoareTripleChecker+Invalid, 4609 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 272 IncrementalHoareTripleChecker+Valid, 4337 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-03-20 07:26:26,590 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [673 Valid, 2617 Invalid, 4609 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [272 Valid, 4337 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-03-20 07:26:26,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 924 states. [2022-03-20 07:26:26,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 924 to 804. [2022-03-20 07:26:26,610 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) [2022-03-20 07:26:26,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 804 states to 804 states and 1095 transitions. [2022-03-20 07:26:26,611 INFO L78 Accepts]: Start accepts. Automaton has 804 states and 1095 transitions. Word has length 56 [2022-03-20 07:26:26,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 07:26:26,612 INFO L478 AbstractCegarLoop]: Abstraction has 804 states and 1095 transitions. [2022-03-20 07:26:26,612 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.8) internal successors, (42), 7 states have internal predecessors, (42), 2 states have call successors, (8), 7 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 1 states have call successors, (6) [2022-03-20 07:26:26,612 INFO L276 IsEmpty]: Start isEmpty. Operand 804 states and 1095 transitions. [2022-03-20 07:26:26,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-03-20 07:26:26,613 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 07:26:26,613 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 07:26:26,613 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-03-20 07:26:26,613 INFO L403 AbstractCegarLoop]: === Iteration 24 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 07:26:26,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 07:26:26,613 INFO L85 PathProgramCache]: Analyzing trace with hash -303401055, now seen corresponding path program 1 times [2022-03-20 07:26:26,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 07:26:26,614 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701550396] [2022-03-20 07:26:26,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 07:26:26,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 07:26:26,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:26,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 07:26:26,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:26,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 07:26:26,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:26,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 07:26:26,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:26,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-03-20 07:26:26,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:26,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-20 07:26:26,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:26,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-20 07:26:26,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:26,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 07:26:26,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 07:26:26,806 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701550396] [2022-03-20 07:26:26,806 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1701550396] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 07:26:26,808 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 07:26:26,808 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-03-20 07:26:26,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014963274] [2022-03-20 07:26:26,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 07:26:26,808 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-03-20 07:26:26,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 07:26:26,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-03-20 07:26:26,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2022-03-20 07:26:26,809 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) [2022-03-20 07:26:28,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 07:26:28,215 INFO L93 Difference]: Finished difference Result 934 states and 1316 transitions. [2022-03-20 07:26:28,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-20 07:26:28,216 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 [2022-03-20 07:26:28,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 07:26:28,228 INFO L225 Difference]: With dead ends: 934 [2022-03-20 07:26:28,228 INFO L226 Difference]: Without dead ends: 919 [2022-03-20 07:26:28,229 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2022-03-20 07:26:28,229 INFO L913 BasicCegarLoop]: 657 mSDtfsCounter, 669 mSDsluCounter, 1996 mSDsCounter, 0 mSdLazyCounter, 4646 mSolverCounterSat, 270 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 671 SdHoareTripleChecker+Valid, 2653 SdHoareTripleChecker+Invalid, 4916 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 270 IncrementalHoareTripleChecker+Valid, 4646 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-03-20 07:26:28,229 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [671 Valid, 2653 Invalid, 4916 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [270 Valid, 4646 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-03-20 07:26:28,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 919 states. [2022-03-20 07:26:28,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 919 to 799. [2022-03-20 07:26:28,238 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) [2022-03-20 07:26:28,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 799 states to 799 states and 1088 transitions. [2022-03-20 07:26:28,239 INFO L78 Accepts]: Start accepts. Automaton has 799 states and 1088 transitions. Word has length 55 [2022-03-20 07:26:28,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 07:26:28,239 INFO L478 AbstractCegarLoop]: Abstraction has 799 states and 1088 transitions. [2022-03-20 07:26:28,239 INFO L479 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) [2022-03-20 07:26:28,240 INFO L276 IsEmpty]: Start isEmpty. Operand 799 states and 1088 transitions. [2022-03-20 07:26:28,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-03-20 07:26:28,241 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 07:26:28,241 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 07:26:28,241 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-03-20 07:26:28,241 INFO L403 AbstractCegarLoop]: === Iteration 25 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 07:26:28,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 07:26:28,241 INFO L85 PathProgramCache]: Analyzing trace with hash 1335002991, now seen corresponding path program 1 times [2022-03-20 07:26:28,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 07:26:28,241 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453067346] [2022-03-20 07:26:28,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 07:26:28,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 07:26:28,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:28,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 07:26:28,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:28,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 07:26:28,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:28,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 07:26:28,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:28,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-20 07:26:28,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:28,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-03-20 07:26:28,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:28,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-03-20 07:26:28,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:28,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 07:26:28,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 07:26:28,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453067346] [2022-03-20 07:26:28,363 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [453067346] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 07:26:28,363 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 07:26:28,363 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-03-20 07:26:28,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888603210] [2022-03-20 07:26:28,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 07:26:28,363 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-20 07:26:28,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 07:26:28,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-20 07:26:28,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-03-20 07:26:28,364 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) [2022-03-20 07:26:29,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 07:26:29,748 INFO L93 Difference]: Finished difference Result 941 states and 1319 transitions. [2022-03-20 07:26:29,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-20 07:26:29,749 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 [2022-03-20 07:26:29,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 07:26:29,751 INFO L225 Difference]: With dead ends: 941 [2022-03-20 07:26:29,751 INFO L226 Difference]: Without dead ends: 941 [2022-03-20 07:26:29,751 INFO L912 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 [2022-03-20 07:26:29,752 INFO L913 BasicCegarLoop]: 678 mSDtfsCounter, 1525 mSDsluCounter, 512 mSDsCounter, 0 mSdLazyCounter, 1313 mSolverCounterSat, 379 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1535 SdHoareTripleChecker+Valid, 1190 SdHoareTripleChecker+Invalid, 1692 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 379 IncrementalHoareTripleChecker+Valid, 1313 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-03-20 07:26:29,752 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1535 Valid, 1190 Invalid, 1692 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [379 Valid, 1313 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-03-20 07:26:29,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 941 states. [2022-03-20 07:26:29,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 941 to 799. [2022-03-20 07:26:29,761 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) [2022-03-20 07:26:29,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 799 states to 799 states and 1087 transitions. [2022-03-20 07:26:29,762 INFO L78 Accepts]: Start accepts. Automaton has 799 states and 1087 transitions. Word has length 56 [2022-03-20 07:26:29,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 07:26:29,762 INFO L478 AbstractCegarLoop]: Abstraction has 799 states and 1087 transitions. [2022-03-20 07:26:29,762 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.2) internal successors, (42), 4 states have internal predecessors, (42), 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) [2022-03-20 07:26:29,762 INFO L276 IsEmpty]: Start isEmpty. Operand 799 states and 1087 transitions. [2022-03-20 07:26:29,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-03-20 07:26:29,764 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 07:26:29,764 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 07:26:29,764 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-03-20 07:26:29,764 INFO L403 AbstractCegarLoop]: === Iteration 26 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 07:26:29,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 07:26:29,764 INFO L85 PathProgramCache]: Analyzing trace with hash 1948386428, now seen corresponding path program 1 times [2022-03-20 07:26:29,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 07:26:29,764 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029625361] [2022-03-20 07:26:29,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 07:26:29,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 07:26:29,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:29,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 07:26:29,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:29,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 07:26:29,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:29,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 07:26:29,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:29,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-03-20 07:26:29,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:29,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-20 07:26:29,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:29,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 07:26:29,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:29,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 07:26:29,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 07:26:29,896 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029625361] [2022-03-20 07:26:29,896 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2029625361] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 07:26:29,897 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 07:26:29,897 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-20 07:26:29,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589418658] [2022-03-20 07:26:29,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 07:26:29,897 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-20 07:26:29,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 07:26:29,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-20 07:26:29,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-03-20 07:26:29,898 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) [2022-03-20 07:26:31,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 07:26:31,115 INFO L93 Difference]: Finished difference Result 1023 states and 1421 transitions. [2022-03-20 07:26:31,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-20 07:26:31,115 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 [2022-03-20 07:26:31,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 07:26:31,121 INFO L225 Difference]: With dead ends: 1023 [2022-03-20 07:26:31,121 INFO L226 Difference]: Without dead ends: 1023 [2022-03-20 07:26:31,121 INFO L912 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 [2022-03-20 07:26:31,122 INFO L913 BasicCegarLoop]: 663 mSDtfsCounter, 690 mSDsluCounter, 578 mSDsCounter, 0 mSdLazyCounter, 1338 mSolverCounterSat, 229 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 712 SdHoareTripleChecker+Valid, 1241 SdHoareTripleChecker+Invalid, 1567 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 229 IncrementalHoareTripleChecker+Valid, 1338 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-03-20 07:26:31,122 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [712 Valid, 1241 Invalid, 1567 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [229 Valid, 1338 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-03-20 07:26:31,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1023 states. [2022-03-20 07:26:31,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1023 to 840. [2022-03-20 07:26:31,131 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) [2022-03-20 07:26:31,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 840 states to 840 states and 1127 transitions. [2022-03-20 07:26:31,132 INFO L78 Accepts]: Start accepts. Automaton has 840 states and 1127 transitions. Word has length 61 [2022-03-20 07:26:31,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 07:26:31,132 INFO L478 AbstractCegarLoop]: Abstraction has 840 states and 1127 transitions. [2022-03-20 07:26:31,133 INFO L479 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) [2022-03-20 07:26:31,133 INFO L276 IsEmpty]: Start isEmpty. Operand 840 states and 1127 transitions. [2022-03-20 07:26:31,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-03-20 07:26:31,134 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 07:26:31,134 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 07:26:31,134 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-03-20 07:26:31,134 INFO L403 AbstractCegarLoop]: === Iteration 27 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 07:26:31,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 07:26:31,134 INFO L85 PathProgramCache]: Analyzing trace with hash -1337798748, now seen corresponding path program 1 times [2022-03-20 07:26:31,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 07:26:31,134 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178013474] [2022-03-20 07:26:31,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 07:26:31,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 07:26:31,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:31,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 07:26:31,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:31,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 07:26:31,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:31,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 07:26:31,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:31,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-20 07:26:31,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:31,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-20 07:26:31,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:31,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-03-20 07:26:31,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:31,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-20 07:26:31,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:31,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 07:26:31,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 07:26:31,415 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178013474] [2022-03-20 07:26:31,415 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [178013474] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 07:26:31,416 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 07:26:31,416 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-20 07:26:31,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213728306] [2022-03-20 07:26:31,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 07:26:31,417 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-20 07:26:31,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 07:26:31,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-20 07:26:31,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=327, Unknown=0, NotChecked=0, Total=380 [2022-03-20 07:26:31,417 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) [2022-03-20 07:26:34,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 07:26:34,166 INFO L93 Difference]: Finished difference Result 1005 states and 1396 transitions. [2022-03-20 07:26:34,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-03-20 07:26:34,170 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 [2022-03-20 07:26:34,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 07:26:34,172 INFO L225 Difference]: With dead ends: 1005 [2022-03-20 07:26:34,172 INFO L226 Difference]: Without dead ends: 984 [2022-03-20 07:26:34,173 INFO L912 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 [2022-03-20 07:26:34,173 INFO L913 BasicCegarLoop]: 655 mSDtfsCounter, 1023 mSDsluCounter, 2575 mSDsCounter, 0 mSdLazyCounter, 6165 mSolverCounterSat, 430 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1029 SdHoareTripleChecker+Valid, 3230 SdHoareTripleChecker+Invalid, 6595 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 430 IncrementalHoareTripleChecker+Valid, 6165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-03-20 07:26:34,173 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1029 Valid, 3230 Invalid, 6595 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [430 Valid, 6165 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-03-20 07:26:34,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 984 states. [2022-03-20 07:26:34,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 984 to 838. [2022-03-20 07:26:34,202 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) [2022-03-20 07:26:34,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 838 states to 838 states and 1123 transitions. [2022-03-20 07:26:34,223 INFO L78 Accepts]: Start accepts. Automaton has 838 states and 1123 transitions. Word has length 62 [2022-03-20 07:26:34,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 07:26:34,223 INFO L478 AbstractCegarLoop]: Abstraction has 838 states and 1123 transitions. [2022-03-20 07:26:34,223 INFO L479 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) [2022-03-20 07:26:34,223 INFO L276 IsEmpty]: Start isEmpty. Operand 838 states and 1123 transitions. [2022-03-20 07:26:34,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-03-20 07:26:34,225 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 07:26:34,225 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 07:26:34,225 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-03-20 07:26:34,225 INFO L403 AbstractCegarLoop]: === Iteration 28 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 07:26:34,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 07:26:34,226 INFO L85 PathProgramCache]: Analyzing trace with hash 1214008405, now seen corresponding path program 1 times [2022-03-20 07:26:34,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 07:26:34,226 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244013618] [2022-03-20 07:26:34,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 07:26:34,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 07:26:34,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:34,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 07:26:34,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:34,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 07:26:34,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:34,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 07:26:34,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:34,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-20 07:26:34,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:34,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-20 07:26:34,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:34,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-20 07:26:34,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:34,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-20 07:26:34,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:34,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 07:26:34,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 07:26:34,606 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244013618] [2022-03-20 07:26:34,606 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1244013618] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 07:26:34,606 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 07:26:34,606 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-20 07:26:34,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677828360] [2022-03-20 07:26:34,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 07:26:34,607 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-20 07:26:34,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 07:26:34,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-20 07:26:34,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=327, Unknown=0, NotChecked=0, Total=380 [2022-03-20 07:26:34,607 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) [2022-03-20 07:26:36,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 07:26:36,615 INFO L93 Difference]: Finished difference Result 1003 states and 1392 transitions. [2022-03-20 07:26:36,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-03-20 07:26:36,616 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 [2022-03-20 07:26:36,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 07:26:36,632 INFO L225 Difference]: With dead ends: 1003 [2022-03-20 07:26:36,632 INFO L226 Difference]: Without dead ends: 980 [2022-03-20 07:26:36,633 INFO L912 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 [2022-03-20 07:26:36,633 INFO L913 BasicCegarLoop]: 634 mSDtfsCounter, 1005 mSDsluCounter, 2803 mSDsCounter, 0 mSdLazyCounter, 6736 mSolverCounterSat, 420 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1009 SdHoareTripleChecker+Valid, 3437 SdHoareTripleChecker+Invalid, 7156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 420 IncrementalHoareTripleChecker+Valid, 6736 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-03-20 07:26:36,634 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1009 Valid, 3437 Invalid, 7156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [420 Valid, 6736 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-03-20 07:26:36,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 980 states. [2022-03-20 07:26:36,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 980 to 837. [2022-03-20 07:26:36,652 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) [2022-03-20 07:26:36,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 837 states to 837 states and 1112 transitions. [2022-03-20 07:26:36,653 INFO L78 Accepts]: Start accepts. Automaton has 837 states and 1112 transitions. Word has length 59 [2022-03-20 07:26:36,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 07:26:36,653 INFO L478 AbstractCegarLoop]: Abstraction has 837 states and 1112 transitions. [2022-03-20 07:26:36,653 INFO L479 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) [2022-03-20 07:26:36,653 INFO L276 IsEmpty]: Start isEmpty. Operand 837 states and 1112 transitions. [2022-03-20 07:26:36,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-03-20 07:26:36,655 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 07:26:36,655 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 07:26:36,655 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-03-20 07:26:36,655 INFO L403 AbstractCegarLoop]: === Iteration 29 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 07:26:36,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 07:26:36,655 INFO L85 PathProgramCache]: Analyzing trace with hash -55485367, now seen corresponding path program 1 times [2022-03-20 07:26:36,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 07:26:36,655 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816658523] [2022-03-20 07:26:36,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 07:26:36,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 07:26:36,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:36,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 07:26:36,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:36,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 07:26:36,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:36,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 07:26:36,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:36,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-20 07:26:36,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:36,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 07:26:36,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:36,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-20 07:26:36,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:36,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 07:26:36,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 07:26:36,874 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816658523] [2022-03-20 07:26:36,874 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [816658523] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 07:26:36,874 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 07:26:36,875 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-03-20 07:26:36,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454689760] [2022-03-20 07:26:36,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 07:26:36,875 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-03-20 07:26:36,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 07:26:36,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-03-20 07:26:36,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2022-03-20 07:26:36,876 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) [2022-03-20 07:26:38,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 07:26:38,695 INFO L93 Difference]: Finished difference Result 992 states and 1366 transitions. [2022-03-20 07:26:38,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-03-20 07:26:38,696 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 [2022-03-20 07:26:38,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 07:26:38,698 INFO L225 Difference]: With dead ends: 992 [2022-03-20 07:26:38,698 INFO L226 Difference]: Without dead ends: 975 [2022-03-20 07:26:38,698 INFO L912 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 [2022-03-20 07:26:38,698 INFO L913 BasicCegarLoop]: 649 mSDtfsCounter, 1249 mSDsluCounter, 2303 mSDsCounter, 0 mSdLazyCounter, 5378 mSolverCounterSat, 517 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1251 SdHoareTripleChecker+Valid, 2952 SdHoareTripleChecker+Invalid, 5895 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 517 IncrementalHoareTripleChecker+Valid, 5378 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-03-20 07:26:38,698 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1251 Valid, 2952 Invalid, 5895 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [517 Valid, 5378 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-03-20 07:26:38,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 975 states. [2022-03-20 07:26:38,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 975 to 834. [2022-03-20 07:26:38,716 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) [2022-03-20 07:26:38,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 834 states to 834 states and 1107 transitions. [2022-03-20 07:26:38,717 INFO L78 Accepts]: Start accepts. Automaton has 834 states and 1107 transitions. Word has length 58 [2022-03-20 07:26:38,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 07:26:38,718 INFO L478 AbstractCegarLoop]: Abstraction has 834 states and 1107 transitions. [2022-03-20 07:26:38,718 INFO L479 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) [2022-03-20 07:26:38,718 INFO L276 IsEmpty]: Start isEmpty. Operand 834 states and 1107 transitions. [2022-03-20 07:26:38,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-03-20 07:26:38,719 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 07:26:38,719 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 07:26:38,719 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-03-20 07:26:38,719 INFO L403 AbstractCegarLoop]: === Iteration 30 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 07:26:38,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 07:26:38,720 INFO L85 PathProgramCache]: Analyzing trace with hash -57775299, now seen corresponding path program 1 times [2022-03-20 07:26:38,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 07:26:38,720 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343512166] [2022-03-20 07:26:38,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 07:26:38,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 07:26:38,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:38,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 07:26:38,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:38,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 07:26:38,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:38,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 07:26:38,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:38,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-20 07:26:38,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:38,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-20 07:26:38,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:38,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-20 07:26:38,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:38,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-20 07:26:38,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:38,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 07:26:38,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 07:26:38,859 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343512166] [2022-03-20 07:26:38,859 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [343512166] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 07:26:38,859 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 07:26:38,859 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-03-20 07:26:38,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314657402] [2022-03-20 07:26:38,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 07:26:38,860 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-20 07:26:38,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 07:26:38,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-20 07:26:38,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-03-20 07:26:38,861 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) [2022-03-20 07:26:39,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 07:26:39,852 INFO L93 Difference]: Finished difference Result 1036 states and 1451 transitions. [2022-03-20 07:26:39,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-20 07:26:39,853 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 [2022-03-20 07:26:39,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 07:26:39,855 INFO L225 Difference]: With dead ends: 1036 [2022-03-20 07:26:39,855 INFO L226 Difference]: Without dead ends: 1036 [2022-03-20 07:26:39,855 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2022-03-20 07:26:39,856 INFO L913 BasicCegarLoop]: 628 mSDtfsCounter, 1326 mSDsluCounter, 1002 mSDsCounter, 0 mSdLazyCounter, 1658 mSolverCounterSat, 578 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1328 SdHoareTripleChecker+Valid, 1630 SdHoareTripleChecker+Invalid, 2236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 578 IncrementalHoareTripleChecker+Valid, 1658 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-03-20 07:26:39,856 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1328 Valid, 1630 Invalid, 2236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [578 Valid, 1658 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-03-20 07:26:39,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1036 states. [2022-03-20 07:26:39,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1036 to 841. [2022-03-20 07:26:39,865 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) [2022-03-20 07:26:39,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 841 states to 841 states and 1122 transitions. [2022-03-20 07:26:39,866 INFO L78 Accepts]: Start accepts. Automaton has 841 states and 1122 transitions. Word has length 60 [2022-03-20 07:26:39,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 07:26:39,866 INFO L478 AbstractCegarLoop]: Abstraction has 841 states and 1122 transitions. [2022-03-20 07:26:39,867 INFO L479 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) [2022-03-20 07:26:39,867 INFO L276 IsEmpty]: Start isEmpty. Operand 841 states and 1122 transitions. [2022-03-20 07:26:39,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-03-20 07:26:39,868 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 07:26:39,868 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 07:26:39,868 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-03-20 07:26:39,869 INFO L403 AbstractCegarLoop]: === Iteration 31 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 07:26:39,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 07:26:39,869 INFO L85 PathProgramCache]: Analyzing trace with hash -2067879140, now seen corresponding path program 1 times [2022-03-20 07:26:39,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 07:26:39,869 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813181789] [2022-03-20 07:26:39,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 07:26:39,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 07:26:39,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:39,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 07:26:39,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:39,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 07:26:39,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:39,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 07:26:39,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:39,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-20 07:26:39,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:40,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-20 07:26:40,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:40,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-20 07:26:40,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:40,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-20 07:26:40,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:40,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 07:26:40,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 07:26:40,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [813181789] [2022-03-20 07:26:40,056 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [813181789] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 07:26:40,056 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 07:26:40,056 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-03-20 07:26:40,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101124511] [2022-03-20 07:26:40,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 07:26:40,056 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-03-20 07:26:40,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 07:26:40,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-03-20 07:26:40,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2022-03-20 07:26:40,057 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) [2022-03-20 07:26:41,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 07:26:41,296 INFO L93 Difference]: Finished difference Result 1005 states and 1397 transitions. [2022-03-20 07:26:41,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-03-20 07:26:41,297 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 [2022-03-20 07:26:41,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 07:26:41,299 INFO L225 Difference]: With dead ends: 1005 [2022-03-20 07:26:41,299 INFO L226 Difference]: Without dead ends: 983 [2022-03-20 07:26:41,299 INFO L912 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 [2022-03-20 07:26:41,299 INFO L913 BasicCegarLoop]: 633 mSDtfsCounter, 1277 mSDsluCounter, 2021 mSDsCounter, 0 mSdLazyCounter, 3767 mSolverCounterSat, 525 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1280 SdHoareTripleChecker+Valid, 2654 SdHoareTripleChecker+Invalid, 4292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 525 IncrementalHoareTripleChecker+Valid, 3767 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-03-20 07:26:41,300 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1280 Valid, 2654 Invalid, 4292 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [525 Valid, 3767 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-03-20 07:26:41,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 983 states. [2022-03-20 07:26:41,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 983 to 839. [2022-03-20 07:26:41,308 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) [2022-03-20 07:26:41,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 839 states to 839 states and 1118 transitions. [2022-03-20 07:26:41,310 INFO L78 Accepts]: Start accepts. Automaton has 839 states and 1118 transitions. Word has length 60 [2022-03-20 07:26:41,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 07:26:41,310 INFO L478 AbstractCegarLoop]: Abstraction has 839 states and 1118 transitions. [2022-03-20 07:26:41,310 INFO L479 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) [2022-03-20 07:26:41,310 INFO L276 IsEmpty]: Start isEmpty. Operand 839 states and 1118 transitions. [2022-03-20 07:26:41,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-03-20 07:26:41,311 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 07:26:41,311 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 07:26:41,312 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-03-20 07:26:41,312 INFO L403 AbstractCegarLoop]: === Iteration 32 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 07:26:41,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 07:26:41,312 INFO L85 PathProgramCache]: Analyzing trace with hash 1557615113, now seen corresponding path program 1 times [2022-03-20 07:26:41,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 07:26:41,312 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572743137] [2022-03-20 07:26:41,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 07:26:41,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 07:26:41,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:41,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 07:26:41,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:41,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 07:26:41,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:41,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 07:26:41,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:41,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-20 07:26:41,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:41,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-20 07:26:41,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:41,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-20 07:26:41,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:41,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 07:26:41,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 07:26:41,503 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572743137] [2022-03-20 07:26:41,503 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [572743137] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 07:26:41,503 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 07:26:41,503 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-03-20 07:26:41,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088846483] [2022-03-20 07:26:41,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 07:26:41,504 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-03-20 07:26:41,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 07:26:41,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-03-20 07:26:41,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2022-03-20 07:26:41,504 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) [2022-03-20 07:26:43,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 07:26:43,121 INFO L93 Difference]: Finished difference Result 1004 states and 1391 transitions. [2022-03-20 07:26:43,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-03-20 07:26:43,121 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 [2022-03-20 07:26:43,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 07:26:43,123 INFO L225 Difference]: With dead ends: 1004 [2022-03-20 07:26:43,124 INFO L226 Difference]: Without dead ends: 968 [2022-03-20 07:26:43,124 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=92, Invalid=414, Unknown=0, NotChecked=0, Total=506 [2022-03-20 07:26:43,124 INFO L913 BasicCegarLoop]: 620 mSDtfsCounter, 660 mSDsluCounter, 2156 mSDsCounter, 0 mSdLazyCounter, 4989 mSolverCounterSat, 279 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 664 SdHoareTripleChecker+Valid, 2776 SdHoareTripleChecker+Invalid, 5268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 279 IncrementalHoareTripleChecker+Valid, 4989 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-03-20 07:26:43,124 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [664 Valid, 2776 Invalid, 5268 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [279 Valid, 4989 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-03-20 07:26:43,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 968 states. [2022-03-20 07:26:43,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 968 to 827. [2022-03-20 07:26:43,143 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) [2022-03-20 07:26:43,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 827 states to 827 states and 1097 transitions. [2022-03-20 07:26:43,144 INFO L78 Accepts]: Start accepts. Automaton has 827 states and 1097 transitions. Word has length 59 [2022-03-20 07:26:43,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 07:26:43,144 INFO L478 AbstractCegarLoop]: Abstraction has 827 states and 1097 transitions. [2022-03-20 07:26:43,144 INFO L479 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) [2022-03-20 07:26:43,144 INFO L276 IsEmpty]: Start isEmpty. Operand 827 states and 1097 transitions. [2022-03-20 07:26:43,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-03-20 07:26:43,146 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 07:26:43,146 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 07:26:43,146 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-03-20 07:26:43,146 INFO L403 AbstractCegarLoop]: === Iteration 33 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 07:26:43,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 07:26:43,146 INFO L85 PathProgramCache]: Analyzing trace with hash -1192878684, now seen corresponding path program 1 times [2022-03-20 07:26:43,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 07:26:43,146 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745820766] [2022-03-20 07:26:43,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 07:26:43,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 07:26:43,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:43,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 07:26:43,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:43,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 07:26:43,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:43,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 07:26:43,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:43,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-20 07:26:43,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:43,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-20 07:26:43,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:43,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-20 07:26:43,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:43,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-03-20 07:26:43,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:43,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 07:26:43,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 07:26:43,312 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745820766] [2022-03-20 07:26:43,312 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1745820766] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 07:26:43,312 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 07:26:43,312 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-20 07:26:43,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294709420] [2022-03-20 07:26:43,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 07:26:43,312 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-20 07:26:43,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 07:26:43,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-20 07:26:43,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2022-03-20 07:26:43,313 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) [2022-03-20 07:26:44,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 07:26:44,433 INFO L93 Difference]: Finished difference Result 984 states and 1386 transitions. [2022-03-20 07:26:44,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-20 07:26:44,433 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 [2022-03-20 07:26:44,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 07:26:44,435 INFO L225 Difference]: With dead ends: 984 [2022-03-20 07:26:44,435 INFO L226 Difference]: Without dead ends: 982 [2022-03-20 07:26:44,436 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2022-03-20 07:26:44,436 INFO L913 BasicCegarLoop]: 609 mSDtfsCounter, 350 mSDsluCounter, 1164 mSDsCounter, 0 mSdLazyCounter, 2141 mSolverCounterSat, 149 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 352 SdHoareTripleChecker+Valid, 1773 SdHoareTripleChecker+Invalid, 2290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 149 IncrementalHoareTripleChecker+Valid, 2141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-03-20 07:26:44,436 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [352 Valid, 1773 Invalid, 2290 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [149 Valid, 2141 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-03-20 07:26:44,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 982 states. [2022-03-20 07:26:44,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 982 to 831. [2022-03-20 07:26:44,462 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) [2022-03-20 07:26:44,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 831 states to 831 states and 1115 transitions. [2022-03-20 07:26:44,463 INFO L78 Accepts]: Start accepts. Automaton has 831 states and 1115 transitions. Word has length 61 [2022-03-20 07:26:44,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 07:26:44,463 INFO L478 AbstractCegarLoop]: Abstraction has 831 states and 1115 transitions. [2022-03-20 07:26:44,463 INFO L479 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) [2022-03-20 07:26:44,463 INFO L276 IsEmpty]: Start isEmpty. Operand 831 states and 1115 transitions. [2022-03-20 07:26:44,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-03-20 07:26:44,465 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 07:26:44,465 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 07:26:44,465 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-03-20 07:26:44,465 INFO L403 AbstractCegarLoop]: === Iteration 34 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 07:26:44,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 07:26:44,465 INFO L85 PathProgramCache]: Analyzing trace with hash 440130742, now seen corresponding path program 1 times [2022-03-20 07:26:44,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 07:26:44,465 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342236679] [2022-03-20 07:26:44,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 07:26:44,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 07:26:44,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:44,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 07:26:44,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:44,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 07:26:44,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:44,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 07:26:44,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:44,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-20 07:26:44,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:44,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-20 07:26:44,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:44,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-03-20 07:26:44,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:44,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 07:26:44,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 07:26:44,603 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342236679] [2022-03-20 07:26:44,603 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1342236679] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 07:26:44,603 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 07:26:44,603 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-03-20 07:26:44,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882652754] [2022-03-20 07:26:44,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 07:26:44,604 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-20 07:26:44,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 07:26:44,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-20 07:26:44,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2022-03-20 07:26:44,604 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) [2022-03-20 07:26:45,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 07:26:45,918 INFO L93 Difference]: Finished difference Result 974 states and 1367 transitions. [2022-03-20 07:26:45,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-20 07:26:45,919 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 [2022-03-20 07:26:45,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 07:26:45,939 INFO L225 Difference]: With dead ends: 974 [2022-03-20 07:26:45,939 INFO L226 Difference]: Without dead ends: 974 [2022-03-20 07:26:45,939 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2022-03-20 07:26:45,939 INFO L913 BasicCegarLoop]: 607 mSDtfsCounter, 349 mSDsluCounter, 904 mSDsCounter, 0 mSdLazyCounter, 2010 mSolverCounterSat, 133 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 351 SdHoareTripleChecker+Valid, 1511 SdHoareTripleChecker+Invalid, 2143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 133 IncrementalHoareTripleChecker+Valid, 2010 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-03-20 07:26:45,939 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [351 Valid, 1511 Invalid, 2143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [133 Valid, 2010 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-03-20 07:26:45,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 974 states. [2022-03-20 07:26:45,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 974 to 831. [2022-03-20 07:26:45,948 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) [2022-03-20 07:26:45,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 831 states to 831 states and 1114 transitions. [2022-03-20 07:26:45,949 INFO L78 Accepts]: Start accepts. Automaton has 831 states and 1114 transitions. Word has length 60 [2022-03-20 07:26:45,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 07:26:45,950 INFO L478 AbstractCegarLoop]: Abstraction has 831 states and 1114 transitions. [2022-03-20 07:26:45,950 INFO L479 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) [2022-03-20 07:26:45,950 INFO L276 IsEmpty]: Start isEmpty. Operand 831 states and 1114 transitions. [2022-03-20 07:26:45,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-03-20 07:26:45,951 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 07:26:45,951 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 07:26:45,951 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-03-20 07:26:45,951 INFO L403 AbstractCegarLoop]: === Iteration 35 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 07:26:45,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 07:26:45,952 INFO L85 PathProgramCache]: Analyzing trace with hash 185394197, now seen corresponding path program 1 times [2022-03-20 07:26:45,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 07:26:45,952 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42376481] [2022-03-20 07:26:45,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 07:26:45,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 07:26:45,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:46,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 07:26:46,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:46,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 07:26:46,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:46,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 07:26:46,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:46,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-20 07:26:46,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:46,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-20 07:26:46,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:46,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-03-20 07:26:46,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:46,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 07:26:46,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 07:26:46,233 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42376481] [2022-03-20 07:26:46,233 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [42376481] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 07:26:46,233 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 07:26:46,233 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-03-20 07:26:46,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975872953] [2022-03-20 07:26:46,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 07:26:46,233 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-03-20 07:26:46,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 07:26:46,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-03-20 07:26:46,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2022-03-20 07:26:46,234 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) [2022-03-20 07:26:48,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 07:26:48,244 INFO L93 Difference]: Finished difference Result 1010 states and 1414 transitions. [2022-03-20 07:26:48,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-03-20 07:26:48,244 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 [2022-03-20 07:26:48,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 07:26:48,247 INFO L225 Difference]: With dead ends: 1010 [2022-03-20 07:26:48,247 INFO L226 Difference]: Without dead ends: 961 [2022-03-20 07:26:48,247 INFO L912 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 [2022-03-20 07:26:48,247 INFO L913 BasicCegarLoop]: 608 mSDtfsCounter, 1261 mSDsluCounter, 1912 mSDsCounter, 0 mSdLazyCounter, 4078 mSolverCounterSat, 513 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1266 SdHoareTripleChecker+Valid, 2520 SdHoareTripleChecker+Invalid, 4591 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 513 IncrementalHoareTripleChecker+Valid, 4078 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-03-20 07:26:48,247 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1266 Valid, 2520 Invalid, 4591 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [513 Valid, 4078 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-03-20 07:26:48,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 961 states. [2022-03-20 07:26:48,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 961 to 823. [2022-03-20 07:26:48,258 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) [2022-03-20 07:26:48,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 823 states to 823 states and 1099 transitions. [2022-03-20 07:26:48,260 INFO L78 Accepts]: Start accepts. Automaton has 823 states and 1099 transitions. Word has length 60 [2022-03-20 07:26:48,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 07:26:48,260 INFO L478 AbstractCegarLoop]: Abstraction has 823 states and 1099 transitions. [2022-03-20 07:26:48,260 INFO L479 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) [2022-03-20 07:26:48,260 INFO L276 IsEmpty]: Start isEmpty. Operand 823 states and 1099 transitions. [2022-03-20 07:26:48,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-03-20 07:26:48,262 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 07:26:48,262 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 07:26:48,262 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-03-20 07:26:48,262 INFO L403 AbstractCegarLoop]: === Iteration 36 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 07:26:48,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 07:26:48,262 INFO L85 PathProgramCache]: Analyzing trace with hash -1158774888, now seen corresponding path program 1 times [2022-03-20 07:26:48,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 07:26:48,262 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313119083] [2022-03-20 07:26:48,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 07:26:48,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 07:26:48,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:48,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 07:26:48,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:48,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 07:26:48,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:48,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 07:26:48,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:48,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-20 07:26:48,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:48,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-03-20 07:26:48,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:48,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-20 07:26:48,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:48,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-20 07:26:48,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:48,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 07:26:48,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 07:26:48,527 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313119083] [2022-03-20 07:26:48,527 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1313119083] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 07:26:48,527 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 07:26:48,527 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-20 07:26:48,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591123668] [2022-03-20 07:26:48,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 07:26:48,528 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-20 07:26:48,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 07:26:48,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-20 07:26:48,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=296, Unknown=0, NotChecked=0, Total=342 [2022-03-20 07:26:48,528 INFO L87 Difference]: Start difference. First operand 823 states and 1099 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) [2022-03-20 07:26:50,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 07:26:50,546 INFO L93 Difference]: Finished difference Result 975 states and 1357 transitions. [2022-03-20 07:26:50,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-03-20 07:26:50,546 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 [2022-03-20 07:26:50,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 07:26:50,548 INFO L225 Difference]: With dead ends: 975 [2022-03-20 07:26:50,548 INFO L226 Difference]: Without dead ends: 956 [2022-03-20 07:26:50,548 INFO L912 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 [2022-03-20 07:26:50,549 INFO L913 BasicCegarLoop]: 597 mSDtfsCounter, 1168 mSDsluCounter, 2591 mSDsCounter, 0 mSdLazyCounter, 5487 mSolverCounterSat, 479 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1170 SdHoareTripleChecker+Valid, 3188 SdHoareTripleChecker+Invalid, 5966 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 479 IncrementalHoareTripleChecker+Valid, 5487 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-03-20 07:26:50,549 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1170 Valid, 3188 Invalid, 5966 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [479 Valid, 5487 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-03-20 07:26:50,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 956 states. [2022-03-20 07:26:50,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 956 to 818. [2022-03-20 07:26:50,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 818 states, 644 states have (on average 1.313664596273292) internal successors, (846), 659 states have internal predecessors, (846), 98 states have call successors, (98), 53 states have call predecessors, (98), 75 states have return successors, (148), 112 states have call predecessors, (148), 92 states have call successors, (148) [2022-03-20 07:26:50,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 818 states to 818 states and 1092 transitions. [2022-03-20 07:26:50,559 INFO L78 Accepts]: Start accepts. Automaton has 818 states and 1092 transitions. Word has length 63 [2022-03-20 07:26:50,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 07:26:50,559 INFO L478 AbstractCegarLoop]: Abstraction has 818 states and 1092 transitions. [2022-03-20 07:26:50,559 INFO L479 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) [2022-03-20 07:26:50,559 INFO L276 IsEmpty]: Start isEmpty. Operand 818 states and 1092 transitions. [2022-03-20 07:26:50,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-03-20 07:26:50,561 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 07:26:50,561 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 07:26:50,561 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-03-20 07:26:50,561 INFO L403 AbstractCegarLoop]: === Iteration 37 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 07:26:50,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 07:26:50,561 INFO L85 PathProgramCache]: Analyzing trace with hash 1342281155, now seen corresponding path program 1 times [2022-03-20 07:26:50,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 07:26:50,561 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448352236] [2022-03-20 07:26:50,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 07:26:50,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 07:26:50,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:50,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 07:26:50,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:50,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 07:26:50,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:50,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 07:26:50,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:50,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-20 07:26:50,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:50,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-20 07:26:50,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:50,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-20 07:26:50,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:50,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-20 07:26:50,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:50,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 07:26:50,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 07:26:50,771 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448352236] [2022-03-20 07:26:50,771 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1448352236] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 07:26:50,771 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 07:26:50,771 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-20 07:26:50,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669142538] [2022-03-20 07:26:50,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 07:26:50,772 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-20 07:26:50,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 07:26:50,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-20 07:26:50,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=296, Unknown=0, NotChecked=0, Total=342 [2022-03-20 07:26:50,773 INFO L87 Difference]: Start difference. First operand 818 states and 1092 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) [2022-03-20 07:26:52,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 07:26:52,282 INFO L93 Difference]: Finished difference Result 970 states and 1350 transitions. [2022-03-20 07:26:52,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-03-20 07:26:52,282 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 [2022-03-20 07:26:52,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 07:26:52,284 INFO L225 Difference]: With dead ends: 970 [2022-03-20 07:26:52,284 INFO L226 Difference]: Without dead ends: 951 [2022-03-20 07:26:52,285 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=366, Unknown=0, NotChecked=0, Total=420 [2022-03-20 07:26:52,285 INFO L913 BasicCegarLoop]: 593 mSDtfsCounter, 584 mSDsluCounter, 2493 mSDsCounter, 0 mSdLazyCounter, 5548 mSolverCounterSat, 244 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 586 SdHoareTripleChecker+Valid, 3086 SdHoareTripleChecker+Invalid, 5792 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 244 IncrementalHoareTripleChecker+Valid, 5548 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-03-20 07:26:52,286 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [586 Valid, 3086 Invalid, 5792 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [244 Valid, 5548 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-03-20 07:26:52,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 951 states. [2022-03-20 07:26:52,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 951 to 813. [2022-03-20 07:26:52,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 813 states, 641 states have (on average 1.313572542901716) internal successors, (842), 656 states have internal predecessors, (842), 97 states have call successors, (97), 53 states have call predecessors, (97), 74 states have return successors, (146), 110 states have call predecessors, (146), 91 states have call successors, (146) [2022-03-20 07:26:52,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 813 states to 813 states and 1085 transitions. [2022-03-20 07:26:52,314 INFO L78 Accepts]: Start accepts. Automaton has 813 states and 1085 transitions. Word has length 62 [2022-03-20 07:26:52,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 07:26:52,314 INFO L478 AbstractCegarLoop]: Abstraction has 813 states and 1085 transitions. [2022-03-20 07:26:52,314 INFO L479 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) [2022-03-20 07:26:52,315 INFO L276 IsEmpty]: Start isEmpty. Operand 813 states and 1085 transitions. [2022-03-20 07:26:52,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-03-20 07:26:52,316 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 07:26:52,316 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 07:26:52,316 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-03-20 07:26:52,316 INFO L403 AbstractCegarLoop]: === Iteration 38 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 07:26:52,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 07:26:52,316 INFO L85 PathProgramCache]: Analyzing trace with hash 739520085, now seen corresponding path program 1 times [2022-03-20 07:26:52,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 07:26:52,316 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813461179] [2022-03-20 07:26:52,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 07:26:52,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 07:26:52,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:52,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 07:26:52,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:52,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 07:26:52,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:52,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 07:26:52,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:52,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-20 07:26:52,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:52,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-20 07:26:52,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:52,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-03-20 07:26:52,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:52,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-20 07:26:52,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:52,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 07:26:52,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 07:26:52,587 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [813461179] [2022-03-20 07:26:52,587 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [813461179] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 07:26:52,587 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 07:26:52,587 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-20 07:26:52,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298830021] [2022-03-20 07:26:52,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 07:26:52,589 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-20 07:26:52,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 07:26:52,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-20 07:26:52,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=327, Unknown=0, NotChecked=0, Total=380 [2022-03-20 07:26:52,589 INFO L87 Difference]: Start difference. First operand 813 states and 1085 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) [2022-03-20 07:26:54,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 07:26:54,484 INFO L93 Difference]: Finished difference Result 970 states and 1348 transitions. [2022-03-20 07:26:54,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-03-20 07:26:54,484 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 [2022-03-20 07:26:54,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 07:26:54,487 INFO L225 Difference]: With dead ends: 970 [2022-03-20 07:26:54,487 INFO L226 Difference]: Without dead ends: 949 [2022-03-20 07:26:54,487 INFO L912 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 [2022-03-20 07:26:54,488 INFO L913 BasicCegarLoop]: 563 mSDtfsCounter, 1181 mSDsluCounter, 2397 mSDsCounter, 0 mSdLazyCounter, 5554 mSolverCounterSat, 484 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1184 SdHoareTripleChecker+Valid, 2960 SdHoareTripleChecker+Invalid, 6038 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 484 IncrementalHoareTripleChecker+Valid, 5554 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-03-20 07:26:54,491 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1184 Valid, 2960 Invalid, 6038 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [484 Valid, 5554 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-03-20 07:26:54,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 949 states. [2022-03-20 07:26:54,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 949 to 811. [2022-03-20 07:26:54,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 811 states, 640 states have (on average 1.3125) internal successors, (840), 655 states have internal predecessors, (840), 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) [2022-03-20 07:26:54,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 811 states to 811 states and 1081 transitions. [2022-03-20 07:26:54,523 INFO L78 Accepts]: Start accepts. Automaton has 811 states and 1081 transitions. Word has length 63 [2022-03-20 07:26:54,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 07:26:54,523 INFO L478 AbstractCegarLoop]: Abstraction has 811 states and 1081 transitions. [2022-03-20 07:26:54,523 INFO L479 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) [2022-03-20 07:26:54,523 INFO L276 IsEmpty]: Start isEmpty. Operand 811 states and 1081 transitions. [2022-03-20 07:26:54,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-03-20 07:26:54,524 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 07:26:54,524 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 07:26:54,524 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-03-20 07:26:54,524 INFO L403 AbstractCegarLoop]: === Iteration 39 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 07:26:54,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 07:26:54,525 INFO L85 PathProgramCache]: Analyzing trace with hash -620638821, now seen corresponding path program 1 times [2022-03-20 07:26:54,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 07:26:54,525 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121956589] [2022-03-20 07:26:54,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 07:26:54,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 07:26:54,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:54,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 07:26:54,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:54,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 07:26:54,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:54,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 07:26:54,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:54,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-20 07:26:54,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:54,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-20 07:26:54,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:54,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-20 07:26:54,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:54,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-20 07:26:54,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:54,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 07:26:54,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 07:26:54,654 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121956589] [2022-03-20 07:26:54,654 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1121956589] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 07:26:54,654 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 07:26:54,654 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-03-20 07:26:54,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177375122] [2022-03-20 07:26:54,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 07:26:54,671 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-20 07:26:54,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 07:26:54,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-20 07:26:54,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-03-20 07:26:54,672 INFO L87 Difference]: Start difference. First operand 811 states and 1081 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) [2022-03-20 07:26:55,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 07:26:55,244 INFO L93 Difference]: Finished difference Result 814 states and 1084 transitions. [2022-03-20 07:26:55,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-20 07:26:55,244 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 [2022-03-20 07:26:55,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 07:26:55,246 INFO L225 Difference]: With dead ends: 814 [2022-03-20 07:26:55,246 INFO L226 Difference]: Without dead ends: 810 [2022-03-20 07:26:55,246 INFO L912 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 [2022-03-20 07:26:55,247 INFO L913 BasicCegarLoop]: 523 mSDtfsCounter, 1153 mSDsluCounter, 540 mSDsCounter, 0 mSdLazyCounter, 734 mSolverCounterSat, 439 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1155 SdHoareTripleChecker+Valid, 1063 SdHoareTripleChecker+Invalid, 1173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 439 IncrementalHoareTripleChecker+Valid, 734 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-20 07:26:55,248 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1155 Valid, 1063 Invalid, 1173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [439 Valid, 734 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-20 07:26:55,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 810 states. [2022-03-20 07:26:55,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 810 to 703. [2022-03-20 07:26:55,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 703 states, 555 states have (on average 1.3045045045045045) internal successors, (724), 569 states have internal predecessors, (724), 84 states have call successors, (84), 47 states have call predecessors, (84), 63 states have return successors, (104), 93 states have call predecessors, (104), 78 states have call successors, (104) [2022-03-20 07:26:55,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 703 states to 703 states and 912 transitions. [2022-03-20 07:26:55,290 INFO L78 Accepts]: Start accepts. Automaton has 703 states and 912 transitions. Word has length 63 [2022-03-20 07:26:55,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 07:26:55,291 INFO L478 AbstractCegarLoop]: Abstraction has 703 states and 912 transitions. [2022-03-20 07:26:55,291 INFO L479 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) [2022-03-20 07:26:55,291 INFO L276 IsEmpty]: Start isEmpty. Operand 703 states and 912 transitions. [2022-03-20 07:26:55,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-03-20 07:26:55,292 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 07:26:55,292 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 07:26:55,292 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-03-20 07:26:55,292 INFO L403 AbstractCegarLoop]: === Iteration 40 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 07:26:55,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 07:26:55,293 INFO L85 PathProgramCache]: Analyzing trace with hash -306718972, now seen corresponding path program 1 times [2022-03-20 07:26:55,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 07:26:55,293 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389227975] [2022-03-20 07:26:55,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 07:26:55,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 07:26:55,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:55,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 07:26:55,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:55,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 07:26:55,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:55,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 07:26:55,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:55,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-03-20 07:26:55,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:55,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 07:26:55,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:55,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-20 07:26:55,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:55,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-20 07:26:55,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:55,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 07:26:55,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:55,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 07:26:55,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 07:26:55,441 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389227975] [2022-03-20 07:26:55,441 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [389227975] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 07:26:55,441 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 07:26:55,441 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-03-20 07:26:55,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825643219] [2022-03-20 07:26:55,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 07:26:55,441 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-20 07:26:55,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 07:26:55,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-20 07:26:55,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-03-20 07:26:55,442 INFO L87 Difference]: Start difference. First operand 703 states and 912 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) [2022-03-20 07:26:56,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 07:26:56,125 INFO L93 Difference]: Finished difference Result 775 states and 1026 transitions. [2022-03-20 07:26:56,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-20 07:26:56,125 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 [2022-03-20 07:26:56,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 07:26:56,127 INFO L225 Difference]: With dead ends: 775 [2022-03-20 07:26:56,127 INFO L226 Difference]: Without dead ends: 775 [2022-03-20 07:26:56,127 INFO L912 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 [2022-03-20 07:26:56,128 INFO L913 BasicCegarLoop]: 485 mSDtfsCounter, 685 mSDsluCounter, 382 mSDsCounter, 0 mSdLazyCounter, 885 mSolverCounterSat, 257 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 696 SdHoareTripleChecker+Valid, 867 SdHoareTripleChecker+Invalid, 1142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 257 IncrementalHoareTripleChecker+Valid, 885 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-20 07:26:56,128 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [696 Valid, 867 Invalid, 1142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [257 Valid, 885 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-20 07:26:56,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 775 states. [2022-03-20 07:26:56,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 775 to 703. [2022-03-20 07:26:56,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 703 states, 555 states have (on average 1.300900900900901) internal successors, (722), 569 states have internal predecessors, (722), 84 states have call successors, (84), 47 states have call predecessors, (84), 63 states have return successors, (104), 93 states have call predecessors, (104), 78 states have call successors, (104) [2022-03-20 07:26:56,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 703 states to 703 states and 910 transitions. [2022-03-20 07:26:56,135 INFO L78 Accepts]: Start accepts. Automaton has 703 states and 910 transitions. Word has length 66 [2022-03-20 07:26:56,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 07:26:56,135 INFO L478 AbstractCegarLoop]: Abstraction has 703 states and 910 transitions. [2022-03-20 07:26:56,135 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (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) [2022-03-20 07:26:56,135 INFO L276 IsEmpty]: Start isEmpty. Operand 703 states and 910 transitions. [2022-03-20 07:26:56,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-03-20 07:26:56,136 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 07:26:56,136 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 07:26:56,136 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-03-20 07:26:56,136 INFO L403 AbstractCegarLoop]: === Iteration 41 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 07:26:56,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 07:26:56,137 INFO L85 PathProgramCache]: Analyzing trace with hash 526937182, now seen corresponding path program 1 times [2022-03-20 07:26:56,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 07:26:56,137 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081856840] [2022-03-20 07:26:56,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 07:26:56,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 07:26:56,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:56,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 07:26:56,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:56,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 07:26:56,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:56,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 07:26:56,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:56,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-20 07:26:56,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:56,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-20 07:26:56,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:56,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-20 07:26:56,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:56,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 07:26:56,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:56,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-20 07:26:56,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:56,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 07:26:56,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 07:26:56,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081856840] [2022-03-20 07:26:56,412 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2081856840] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 07:26:56,412 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 07:26:56,413 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-20 07:26:56,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789447493] [2022-03-20 07:26:56,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 07:26:56,413 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-20 07:26:56,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 07:26:56,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-20 07:26:56,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=359, Unknown=0, NotChecked=0, Total=420 [2022-03-20 07:26:56,413 INFO L87 Difference]: Start difference. First operand 703 states and 910 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) [2022-03-20 07:26:57,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 07:26:57,906 INFO L93 Difference]: Finished difference Result 796 states and 1048 transitions. [2022-03-20 07:26:57,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-03-20 07:26:57,906 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 [2022-03-20 07:26:57,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 07:26:57,909 INFO L225 Difference]: With dead ends: 796 [2022-03-20 07:26:57,909 INFO L226 Difference]: Without dead ends: 774 [2022-03-20 07:26:57,909 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=120, Invalid=692, Unknown=0, NotChecked=0, Total=812 [2022-03-20 07:26:57,910 INFO L913 BasicCegarLoop]: 519 mSDtfsCounter, 1436 mSDsluCounter, 2347 mSDsCounter, 0 mSdLazyCounter, 5164 mSolverCounterSat, 555 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1440 SdHoareTripleChecker+Valid, 2866 SdHoareTripleChecker+Invalid, 5719 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 555 IncrementalHoareTripleChecker+Valid, 5164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-03-20 07:26:57,910 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1440 Valid, 2866 Invalid, 5719 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [555 Valid, 5164 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-03-20 07:26:57,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 774 states. [2022-03-20 07:26:57,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 774 to 701. [2022-03-20 07:26:57,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 701 states, 554 states have (on average 1.2996389891696751) internal successors, (720), 568 states have internal predecessors, (720), 83 states have call successors, (83), 47 states have call predecessors, (83), 63 states have return successors, (103), 92 states have call predecessors, (103), 77 states have call successors, (103) [2022-03-20 07:26:57,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 701 states to 701 states and 906 transitions. [2022-03-20 07:26:57,925 INFO L78 Accepts]: Start accepts. Automaton has 701 states and 906 transitions. Word has length 67 [2022-03-20 07:26:57,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 07:26:57,925 INFO L478 AbstractCegarLoop]: Abstraction has 701 states and 906 transitions. [2022-03-20 07:26:57,925 INFO L479 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) [2022-03-20 07:26:57,925 INFO L276 IsEmpty]: Start isEmpty. Operand 701 states and 906 transitions. [2022-03-20 07:26:57,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-03-20 07:26:57,941 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 07:26:57,941 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 07:26:57,941 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2022-03-20 07:26:57,941 INFO L403 AbstractCegarLoop]: === Iteration 42 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 07:26:57,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 07:26:57,941 INFO L85 PathProgramCache]: Analyzing trace with hash 459314479, now seen corresponding path program 1 times [2022-03-20 07:26:57,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 07:26:57,942 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983885801] [2022-03-20 07:26:57,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 07:26:57,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 07:26:57,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:58,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 07:26:58,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:58,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 07:26:58,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:58,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 07:26:58,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:58,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-20 07:26:58,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:58,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-20 07:26:58,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:58,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-20 07:26:58,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:58,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-03-20 07:26:58,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:58,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-20 07:26:58,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:58,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 07:26:58,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 07:26:58,169 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983885801] [2022-03-20 07:26:58,169 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [983885801] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 07:26:58,169 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 07:26:58,169 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-20 07:26:58,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575633517] [2022-03-20 07:26:58,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 07:26:58,170 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-20 07:26:58,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 07:26:58,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-20 07:26:58,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=359, Unknown=0, NotChecked=0, Total=420 [2022-03-20 07:26:58,170 INFO L87 Difference]: Start difference. First operand 701 states and 906 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) [2022-03-20 07:26:59,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 07:26:59,713 INFO L93 Difference]: Finished difference Result 791 states and 1039 transitions. [2022-03-20 07:26:59,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-03-20 07:26:59,713 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 [2022-03-20 07:26:59,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 07:26:59,716 INFO L225 Difference]: With dead ends: 791 [2022-03-20 07:26:59,716 INFO L226 Difference]: Without dead ends: 769 [2022-03-20 07:26:59,716 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=120, Invalid=692, Unknown=0, NotChecked=0, Total=812 [2022-03-20 07:26:59,717 INFO L913 BasicCegarLoop]: 497 mSDtfsCounter, 344 mSDsluCounter, 1989 mSDsCounter, 0 mSdLazyCounter, 5202 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 347 SdHoareTripleChecker+Valid, 2486 SdHoareTripleChecker+Invalid, 5329 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 5202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-03-20 07:26:59,717 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [347 Valid, 2486 Invalid, 5329 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 5202 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-03-20 07:26:59,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 769 states. [2022-03-20 07:26:59,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 769 to 699. [2022-03-20 07:26:59,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 699 states, 553 states have (on average 1.298372513562387) internal successors, (718), 567 states have internal predecessors, (718), 82 states have call successors, (82), 47 states have call predecessors, (82), 63 states have return successors, (102), 91 states have call predecessors, (102), 76 states have call successors, (102) [2022-03-20 07:26:59,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 699 states to 699 states and 902 transitions. [2022-03-20 07:26:59,736 INFO L78 Accepts]: Start accepts. Automaton has 699 states and 902 transitions. Word has length 66 [2022-03-20 07:26:59,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 07:26:59,737 INFO L478 AbstractCegarLoop]: Abstraction has 699 states and 902 transitions. [2022-03-20 07:26:59,737 INFO L479 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) [2022-03-20 07:26:59,737 INFO L276 IsEmpty]: Start isEmpty. Operand 699 states and 902 transitions. [2022-03-20 07:26:59,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-03-20 07:26:59,738 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 07:26:59,738 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 07:26:59,738 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2022-03-20 07:26:59,740 INFO L403 AbstractCegarLoop]: === Iteration 43 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 07:26:59,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 07:26:59,741 INFO L85 PathProgramCache]: Analyzing trace with hash 1659747958, now seen corresponding path program 1 times [2022-03-20 07:26:59,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 07:26:59,741 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243651039] [2022-03-20 07:26:59,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 07:26:59,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 07:26:59,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:59,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 07:26:59,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:59,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 07:26:59,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:59,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 07:26:59,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:59,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-20 07:26:59,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:59,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-20 07:26:59,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:59,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-20 07:26:59,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:59,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-20 07:26:59,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:59,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 07:26:59,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 07:26:59,894 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243651039] [2022-03-20 07:26:59,894 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [243651039] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 07:26:59,894 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 07:26:59,894 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-20 07:26:59,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156862139] [2022-03-20 07:26:59,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 07:26:59,894 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-20 07:26:59,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 07:26:59,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-20 07:26:59,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2022-03-20 07:26:59,895 INFO L87 Difference]: Start difference. First operand 699 states and 902 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) [2022-03-20 07:27:00,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 07:27:00,816 INFO L93 Difference]: Finished difference Result 800 states and 1053 transitions. [2022-03-20 07:27:00,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-03-20 07:27:00,817 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 [2022-03-20 07:27:00,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 07:27:00,818 INFO L225 Difference]: With dead ends: 800 [2022-03-20 07:27:00,819 INFO L226 Difference]: Without dead ends: 800 [2022-03-20 07:27:00,819 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=138, Invalid=282, Unknown=0, NotChecked=0, Total=420 [2022-03-20 07:27:00,819 INFO L913 BasicCegarLoop]: 498 mSDtfsCounter, 780 mSDsluCounter, 518 mSDsCounter, 0 mSdLazyCounter, 1102 mSolverCounterSat, 258 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 783 SdHoareTripleChecker+Valid, 1016 SdHoareTripleChecker+Invalid, 1360 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 258 IncrementalHoareTripleChecker+Valid, 1102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-20 07:27:00,819 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [783 Valid, 1016 Invalid, 1360 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [258 Valid, 1102 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-20 07:27:00,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 800 states. [2022-03-20 07:27:00,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 800 to 705. [2022-03-20 07:27:00,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 705 states, 558 states have (on average 1.2974910394265233) internal successors, (724), 572 states have internal predecessors, (724), 83 states have call successors, (83), 47 states have call predecessors, (83), 63 states have return successors, (103), 92 states have call predecessors, (103), 77 states have call successors, (103) [2022-03-20 07:27:00,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 705 states to 705 states and 910 transitions. [2022-03-20 07:27:00,826 INFO L78 Accepts]: Start accepts. Automaton has 705 states and 910 transitions. Word has length 65 [2022-03-20 07:27:00,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 07:27:00,827 INFO L478 AbstractCegarLoop]: Abstraction has 705 states and 910 transitions. [2022-03-20 07:27:00,827 INFO L479 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) [2022-03-20 07:27:00,828 INFO L276 IsEmpty]: Start isEmpty. Operand 705 states and 910 transitions. [2022-03-20 07:27:00,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-03-20 07:27:00,829 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 07:27:00,829 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 07:27:00,829 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2022-03-20 07:27:00,829 INFO L403 AbstractCegarLoop]: === Iteration 44 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 07:27:00,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 07:27:00,829 INFO L85 PathProgramCache]: Analyzing trace with hash -697612646, now seen corresponding path program 1 times [2022-03-20 07:27:00,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 07:27:00,829 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128560298] [2022-03-20 07:27:00,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 07:27:00,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 07:27:00,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:27:00,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 07:27:00,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:27:00,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 07:27:00,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:27:00,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 07:27:00,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:27:00,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-20 07:27:00,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:27:00,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-20 07:27:00,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:27:00,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-03-20 07:27:00,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:27:00,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-03-20 07:27:00,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:27:00,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 07:27:00,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 07:27:00,984 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128560298] [2022-03-20 07:27:00,984 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1128560298] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 07:27:00,984 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 07:27:00,984 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-20 07:27:00,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123470733] [2022-03-20 07:27:00,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 07:27:00,984 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-20 07:27:00,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 07:27:00,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-20 07:27:00,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2022-03-20 07:27:00,985 INFO L87 Difference]: Start difference. First operand 705 states and 910 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) [2022-03-20 07:27:01,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 07:27:01,917 INFO L93 Difference]: Finished difference Result 777 states and 1020 transitions. [2022-03-20 07:27:01,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-20 07:27:01,917 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 [2022-03-20 07:27:01,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 07:27:01,922 INFO L225 Difference]: With dead ends: 777 [2022-03-20 07:27:01,922 INFO L226 Difference]: Without dead ends: 777 [2022-03-20 07:27:01,922 INFO L912 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 [2022-03-20 07:27:01,923 INFO L913 BasicCegarLoop]: 504 mSDtfsCounter, 615 mSDsluCounter, 718 mSDsCounter, 0 mSdLazyCounter, 1662 mSolverCounterSat, 224 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 617 SdHoareTripleChecker+Valid, 1222 SdHoareTripleChecker+Invalid, 1886 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 224 IncrementalHoareTripleChecker+Valid, 1662 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-20 07:27:01,923 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [617 Valid, 1222 Invalid, 1886 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [224 Valid, 1662 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-20 07:27:01,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 777 states. [2022-03-20 07:27:01,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 777 to 705. [2022-03-20 07:27:01,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 705 states, 558 states have (on average 1.2939068100358424) internal successors, (722), 572 states have internal predecessors, (722), 83 states have call successors, (83), 47 states have call predecessors, (83), 63 states have return successors, (103), 92 states have call predecessors, (103), 77 states have call successors, (103) [2022-03-20 07:27:01,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 705 states to 705 states and 908 transitions. [2022-03-20 07:27:01,944 INFO L78 Accepts]: Start accepts. Automaton has 705 states and 908 transitions. Word has length 66 [2022-03-20 07:27:01,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 07:27:01,952 INFO L478 AbstractCegarLoop]: Abstraction has 705 states and 908 transitions. [2022-03-20 07:27:01,952 INFO L479 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) [2022-03-20 07:27:01,952 INFO L276 IsEmpty]: Start isEmpty. Operand 705 states and 908 transitions. [2022-03-20 07:27:01,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-03-20 07:27:01,953 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 07:27:01,953 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 07:27:01,953 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2022-03-20 07:27:01,954 INFO L403 AbstractCegarLoop]: === Iteration 45 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 07:27:01,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 07:27:01,954 INFO L85 PathProgramCache]: Analyzing trace with hash -346812709, now seen corresponding path program 1 times [2022-03-20 07:27:01,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 07:27:01,954 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590474453] [2022-03-20 07:27:01,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 07:27:01,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 07:27:01,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:27:02,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 07:27:02,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:27:02,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 07:27:02,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:27:02,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 07:27:02,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:27:02,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-20 07:27:02,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:27:02,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-20 07:27:02,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:27:02,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-03-20 07:27:02,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:27:02,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-03-20 07:27:02,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:27:02,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 07:27:02,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 07:27:02,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590474453] [2022-03-20 07:27:02,131 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [590474453] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 07:27:02,131 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 07:27:02,131 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-03-20 07:27:02,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552744334] [2022-03-20 07:27:02,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 07:27:02,131 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-03-20 07:27:02,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 07:27:02,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-03-20 07:27:02,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2022-03-20 07:27:02,132 INFO L87 Difference]: Start difference. First operand 705 states and 908 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) [2022-03-20 07:27:03,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 07:27:03,964 INFO L93 Difference]: Finished difference Result 799 states and 1045 transitions. [2022-03-20 07:27:03,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-03-20 07:27:03,964 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 [2022-03-20 07:27:03,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 07:27:03,966 INFO L225 Difference]: With dead ends: 799 [2022-03-20 07:27:03,966 INFO L226 Difference]: Without dead ends: 725 [2022-03-20 07:27:03,966 INFO L912 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 [2022-03-20 07:27:03,966 INFO L913 BasicCegarLoop]: 507 mSDtfsCounter, 1192 mSDsluCounter, 1496 mSDsCounter, 0 mSdLazyCounter, 3753 mSolverCounterSat, 447 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1197 SdHoareTripleChecker+Valid, 2003 SdHoareTripleChecker+Invalid, 4200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 447 IncrementalHoareTripleChecker+Valid, 3753 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-03-20 07:27:03,966 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1197 Valid, 2003 Invalid, 4200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [447 Valid, 3753 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-03-20 07:27:03,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 725 states. [2022-03-20 07:27:03,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 725 to 668. [2022-03-20 07:27:03,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 668 states, 528 states have (on average 1.2803030303030303) internal successors, (676), 542 states have internal predecessors, (676), 76 states have call successors, (76), 47 states have call predecessors, (76), 63 states have return successors, (95), 85 states have call predecessors, (95), 70 states have call successors, (95) [2022-03-20 07:27:03,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 668 states to 668 states and 847 transitions. [2022-03-20 07:27:03,972 INFO L78 Accepts]: Start accepts. Automaton has 668 states and 847 transitions. Word has length 66 [2022-03-20 07:27:03,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 07:27:03,973 INFO L478 AbstractCegarLoop]: Abstraction has 668 states and 847 transitions. [2022-03-20 07:27:03,973 INFO L479 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) [2022-03-20 07:27:03,973 INFO L276 IsEmpty]: Start isEmpty. Operand 668 states and 847 transitions. [2022-03-20 07:27:03,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-03-20 07:27:03,974 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 07:27:03,974 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 07:27:03,974 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2022-03-20 07:27:03,974 INFO L403 AbstractCegarLoop]: === Iteration 46 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 07:27:03,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 07:27:03,974 INFO L85 PathProgramCache]: Analyzing trace with hash 255041077, now seen corresponding path program 1 times [2022-03-20 07:27:03,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 07:27:03,974 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625797866] [2022-03-20 07:27:03,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 07:27:03,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 07:27:03,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:27:04,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 07:27:04,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:27:04,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 07:27:04,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:27:04,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 07:27:04,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:27:04,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-20 07:27:04,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:27:04,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-03-20 07:27:04,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:27:04,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-03-20 07:27:04,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:27:04,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-20 07:27:04,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:27:04,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 07:27:04,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 07:27:04,113 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625797866] [2022-03-20 07:27:04,113 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1625797866] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 07:27:04,113 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 07:27:04,113 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-03-20 07:27:04,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493227722] [2022-03-20 07:27:04,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 07:27:04,114 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-20 07:27:04,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 07:27:04,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-20 07:27:04,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-03-20 07:27:04,115 INFO L87 Difference]: Start difference. First operand 668 states and 847 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) [2022-03-20 07:27:05,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 07:27:05,192 INFO L93 Difference]: Finished difference Result 842 states and 1081 transitions. [2022-03-20 07:27:05,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-20 07:27:05,193 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 [2022-03-20 07:27:05,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 07:27:05,195 INFO L225 Difference]: With dead ends: 842 [2022-03-20 07:27:05,195 INFO L226 Difference]: Without dead ends: 842 [2022-03-20 07:27:05,195 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 10 SyntacticMatches, 3 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=98, Unknown=0, NotChecked=0, Total=156 [2022-03-20 07:27:05,195 INFO L913 BasicCegarLoop]: 476 mSDtfsCounter, 964 mSDsluCounter, 440 mSDsCounter, 0 mSdLazyCounter, 1505 mSolverCounterSat, 356 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 978 SdHoareTripleChecker+Valid, 916 SdHoareTripleChecker+Invalid, 1861 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 356 IncrementalHoareTripleChecker+Valid, 1505 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-03-20 07:27:05,195 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [978 Valid, 916 Invalid, 1861 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [356 Valid, 1505 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-03-20 07:27:05,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 842 states. [2022-03-20 07:27:05,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 842 to 714. [2022-03-20 07:27:05,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 714 states, 564 states have (on average 1.2730496453900708) internal successors, (718), 580 states have internal predecessors, (718), 78 states have call successors, (78), 49 states have call predecessors, (78), 71 states have return successors, (103), 93 states have call predecessors, (103), 72 states have call successors, (103) [2022-03-20 07:27:05,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 714 states to 714 states and 899 transitions. [2022-03-20 07:27:05,205 INFO L78 Accepts]: Start accepts. Automaton has 714 states and 899 transitions. Word has length 67 [2022-03-20 07:27:05,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 07:27:05,205 INFO L478 AbstractCegarLoop]: Abstraction has 714 states and 899 transitions. [2022-03-20 07:27:05,205 INFO L479 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) [2022-03-20 07:27:05,205 INFO L276 IsEmpty]: Start isEmpty. Operand 714 states and 899 transitions. [2022-03-20 07:27:05,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-03-20 07:27:05,206 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 07:27:05,206 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 07:27:05,206 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2022-03-20 07:27:05,206 INFO L403 AbstractCegarLoop]: === Iteration 47 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 07:27:05,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 07:27:05,206 INFO L85 PathProgramCache]: Analyzing trace with hash -2058592464, now seen corresponding path program 1 times [2022-03-20 07:27:05,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 07:27:05,207 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346362014] [2022-03-20 07:27:05,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 07:27:05,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 07:27:05,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:27:05,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 07:27:05,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:27:05,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 07:27:05,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:27:05,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 07:27:05,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:27:05,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-20 07:27:05,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:27:05,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-20 07:27:05,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:27:05,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-03-20 07:27:05,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:27:05,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-20 07:27:05,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:27:05,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 07:27:05,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 07:27:05,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346362014] [2022-03-20 07:27:05,367 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [346362014] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 07:27:05,367 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 07:27:05,367 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-20 07:27:05,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616244965] [2022-03-20 07:27:05,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 07:27:05,367 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-20 07:27:05,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 07:27:05,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-20 07:27:05,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2022-03-20 07:27:05,368 INFO L87 Difference]: Start difference. First operand 714 states and 899 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) [2022-03-20 07:27:06,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 07:27:06,355 INFO L93 Difference]: Finished difference Result 765 states and 978 transitions. [2022-03-20 07:27:06,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-20 07:27:06,356 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 [2022-03-20 07:27:06,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 07:27:06,357 INFO L225 Difference]: With dead ends: 765 [2022-03-20 07:27:06,357 INFO L226 Difference]: Without dead ends: 760 [2022-03-20 07:27:06,357 INFO L912 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 [2022-03-20 07:27:06,358 INFO L913 BasicCegarLoop]: 451 mSDtfsCounter, 1233 mSDsluCounter, 629 mSDsCounter, 0 mSdLazyCounter, 1254 mSolverCounterSat, 474 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1235 SdHoareTripleChecker+Valid, 1080 SdHoareTripleChecker+Invalid, 1728 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 474 IncrementalHoareTripleChecker+Valid, 1254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-03-20 07:27:06,358 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1235 Valid, 1080 Invalid, 1728 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [474 Valid, 1254 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-03-20 07:27:06,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 760 states. [2022-03-20 07:27:06,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 760 to 709. [2022-03-20 07:27:06,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 709 states, 560 states have (on average 1.2732142857142856) internal successors, (713), 576 states have internal predecessors, (713), 77 states have call successors, (77), 49 states have call predecessors, (77), 71 states have return successors, (102), 92 states have call predecessors, (102), 71 states have call successors, (102) [2022-03-20 07:27:06,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 709 states to 709 states and 892 transitions. [2022-03-20 07:27:06,364 INFO L78 Accepts]: Start accepts. Automaton has 709 states and 892 transitions. Word has length 67 [2022-03-20 07:27:06,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 07:27:06,364 INFO L478 AbstractCegarLoop]: Abstraction has 709 states and 892 transitions. [2022-03-20 07:27:06,364 INFO L479 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) [2022-03-20 07:27:06,364 INFO L276 IsEmpty]: Start isEmpty. Operand 709 states and 892 transitions. [2022-03-20 07:27:06,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-03-20 07:27:06,365 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 07:27:06,365 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 07:27:06,365 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2022-03-20 07:27:06,366 INFO L403 AbstractCegarLoop]: === Iteration 48 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 07:27:06,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 07:27:06,366 INFO L85 PathProgramCache]: Analyzing trace with hash -238065346, now seen corresponding path program 1 times [2022-03-20 07:27:06,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 07:27:06,366 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675298326] [2022-03-20 07:27:06,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 07:27:06,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 07:27:06,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:27:06,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 07:27:06,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:27:06,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 07:27:06,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:27:06,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 07:27:06,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:27:06,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-20 07:27:06,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:27:06,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-03-20 07:27:06,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:27:06,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-03-20 07:27:06,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:27:06,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-20 07:27:06,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:27:06,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 07:27:06,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 07:27:06,521 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675298326] [2022-03-20 07:27:06,521 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [675298326] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 07:27:06,522 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 07:27:06,522 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-03-20 07:27:06,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811903587] [2022-03-20 07:27:06,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 07:27:06,522 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-20 07:27:06,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 07:27:06,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-20 07:27:06,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-03-20 07:27:06,522 INFO L87 Difference]: Start difference. First operand 709 states and 892 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) [2022-03-20 07:27:07,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 07:27:07,309 INFO L93 Difference]: Finished difference Result 763 states and 966 transitions. [2022-03-20 07:27:07,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-20 07:27:07,309 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 [2022-03-20 07:27:07,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 07:27:07,311 INFO L225 Difference]: With dead ends: 763 [2022-03-20 07:27:07,311 INFO L226 Difference]: Without dead ends: 746 [2022-03-20 07:27:07,312 INFO L912 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 [2022-03-20 07:27:07,314 INFO L913 BasicCegarLoop]: 463 mSDtfsCounter, 1100 mSDsluCounter, 354 mSDsCounter, 0 mSdLazyCounter, 901 mSolverCounterSat, 397 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1116 SdHoareTripleChecker+Valid, 817 SdHoareTripleChecker+Invalid, 1298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 397 IncrementalHoareTripleChecker+Valid, 901 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-20 07:27:07,314 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1116 Valid, 817 Invalid, 1298 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [397 Valid, 901 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-20 07:27:07,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 746 states. [2022-03-20 07:27:07,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 746 to 690. [2022-03-20 07:27:07,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 690 states, 546 states have (on average 1.2637362637362637) internal successors, (690), 561 states have internal predecessors, (690), 76 states have call successors, (76), 48 states have call predecessors, (76), 67 states have return successors, (98), 88 states have call predecessors, (98), 70 states have call successors, (98) [2022-03-20 07:27:07,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 690 states to 690 states and 864 transitions. [2022-03-20 07:27:07,321 INFO L78 Accepts]: Start accepts. Automaton has 690 states and 864 transitions. Word has length 68 [2022-03-20 07:27:07,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 07:27:07,321 INFO L478 AbstractCegarLoop]: Abstraction has 690 states and 864 transitions. [2022-03-20 07:27:07,322 INFO L479 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) [2022-03-20 07:27:07,322 INFO L276 IsEmpty]: Start isEmpty. Operand 690 states and 864 transitions. [2022-03-20 07:27:07,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-03-20 07:27:07,322 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 07:27:07,323 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 07:27:07,323 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2022-03-20 07:27:07,323 INFO L403 AbstractCegarLoop]: === Iteration 49 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 07:27:07,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 07:27:07,323 INFO L85 PathProgramCache]: Analyzing trace with hash -653091009, now seen corresponding path program 1 times [2022-03-20 07:27:07,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 07:27:07,323 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570492841] [2022-03-20 07:27:07,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 07:27:07,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 07:27:07,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:27:07,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 07:27:07,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:27:07,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 07:27:07,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:27:07,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 07:27:07,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:27:07,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-20 07:27:07,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:27:07,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-03-20 07:27:07,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:27:07,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-03-20 07:27:07,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:27:07,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-20 07:27:07,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:27:07,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 07:27:07,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 07:27:07,489 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570492841] [2022-03-20 07:27:07,489 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1570492841] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 07:27:07,489 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 07:27:07,490 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-20 07:27:07,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472173872] [2022-03-20 07:27:07,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 07:27:07,490 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-20 07:27:07,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 07:27:07,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-20 07:27:07,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2022-03-20 07:27:07,491 INFO L87 Difference]: Start difference. First operand 690 states and 864 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) [2022-03-20 07:27:08,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 07:27:08,615 INFO L93 Difference]: Finished difference Result 816 states and 1041 transitions. [2022-03-20 07:27:08,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-20 07:27:08,615 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 [2022-03-20 07:27:08,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 07:27:08,617 INFO L225 Difference]: With dead ends: 816 [2022-03-20 07:27:08,617 INFO L226 Difference]: Without dead ends: 816 [2022-03-20 07:27:08,617 INFO L912 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 [2022-03-20 07:27:08,619 INFO L913 BasicCegarLoop]: 472 mSDtfsCounter, 1734 mSDsluCounter, 542 mSDsCounter, 0 mSdLazyCounter, 1848 mSolverCounterSat, 633 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1741 SdHoareTripleChecker+Valid, 1014 SdHoareTripleChecker+Invalid, 2481 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 633 IncrementalHoareTripleChecker+Valid, 1848 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-03-20 07:27:08,620 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1741 Valid, 1014 Invalid, 2481 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [633 Valid, 1848 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-03-20 07:27:08,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 816 states. [2022-03-20 07:27:08,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 816 to 690. [2022-03-20 07:27:08,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 690 states, 546 states have (on average 1.26007326007326) internal successors, (688), 561 states have internal predecessors, (688), 76 states have call successors, (76), 48 states have call predecessors, (76), 67 states have return successors, (98), 88 states have call predecessors, (98), 70 states have call successors, (98) [2022-03-20 07:27:08,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 690 states to 690 states and 862 transitions. [2022-03-20 07:27:08,627 INFO L78 Accepts]: Start accepts. Automaton has 690 states and 862 transitions. Word has length 68 [2022-03-20 07:27:08,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 07:27:08,628 INFO L478 AbstractCegarLoop]: Abstraction has 690 states and 862 transitions. [2022-03-20 07:27:08,628 INFO L479 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) [2022-03-20 07:27:08,628 INFO L276 IsEmpty]: Start isEmpty. Operand 690 states and 862 transitions. [2022-03-20 07:27:08,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-03-20 07:27:08,629 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 07:27:08,629 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 07:27:08,629 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2022-03-20 07:27:08,629 INFO L403 AbstractCegarLoop]: === Iteration 50 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 07:27:08,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 07:27:08,629 INFO L85 PathProgramCache]: Analyzing trace with hash -1034853120, now seen corresponding path program 1 times [2022-03-20 07:27:08,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 07:27:08,630 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623822495] [2022-03-20 07:27:08,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 07:27:08,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 07:27:08,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:27:08,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 07:27:08,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:27:08,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 07:27:08,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:27:08,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 07:27:08,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:27:08,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-20 07:27:08,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:27:08,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-20 07:27:08,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:27:08,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-20 07:27:08,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:27:08,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-03-20 07:27:08,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:27:08,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-03-20 07:27:08,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:27:08,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-20 07:27:08,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:27:08,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 07:27:08,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 07:27:08,886 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623822495] [2022-03-20 07:27:08,886 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1623822495] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 07:27:08,886 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 07:27:08,886 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-20 07:27:08,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312780211] [2022-03-20 07:27:08,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 07:27:08,887 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-20 07:27:08,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 07:27:08,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-20 07:27:08,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=359, Unknown=0, NotChecked=0, Total=420 [2022-03-20 07:27:08,891 INFO L87 Difference]: Start difference. First operand 690 states and 862 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) [2022-03-20 07:27:10,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 07:27:10,159 INFO L93 Difference]: Finished difference Result 778 states and 990 transitions. [2022-03-20 07:27:10,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-03-20 07:27:10,159 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 [2022-03-20 07:27:10,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 07:27:10,183 INFO L225 Difference]: With dead ends: 778 [2022-03-20 07:27:10,184 INFO L226 Difference]: Without dead ends: 756 [2022-03-20 07:27:10,185 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=120, Invalid=692, Unknown=0, NotChecked=0, Total=812 [2022-03-20 07:27:10,185 INFO L913 BasicCegarLoop]: 459 mSDtfsCounter, 566 mSDsluCounter, 2182 mSDsCounter, 0 mSdLazyCounter, 4524 mSolverCounterSat, 210 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 571 SdHoareTripleChecker+Valid, 2641 SdHoareTripleChecker+Invalid, 4734 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 210 IncrementalHoareTripleChecker+Valid, 4524 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-03-20 07:27:10,185 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [571 Valid, 2641 Invalid, 4734 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [210 Valid, 4524 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-03-20 07:27:10,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 756 states. [2022-03-20 07:27:10,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 756 to 688. [2022-03-20 07:27:10,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 688 states, 545 states have (on average 1.2587155963302752) internal successors, (686), 560 states have internal predecessors, (686), 75 states have call successors, (75), 48 states have call predecessors, (75), 67 states have return successors, (97), 87 states have call predecessors, (97), 69 states have call successors, (97) [2022-03-20 07:27:10,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 688 states to 688 states and 858 transitions. [2022-03-20 07:27:10,191 INFO L78 Accepts]: Start accepts. Automaton has 688 states and 858 transitions. Word has length 74 [2022-03-20 07:27:10,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 07:27:10,191 INFO L478 AbstractCegarLoop]: Abstraction has 688 states and 858 transitions. [2022-03-20 07:27:10,192 INFO L479 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) [2022-03-20 07:27:10,192 INFO L276 IsEmpty]: Start isEmpty. Operand 688 states and 858 transitions. [2022-03-20 07:27:10,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-20 07:27:10,193 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 07:27:10,193 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 07:27:10,193 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2022-03-20 07:27:10,193 INFO L403 AbstractCegarLoop]: === Iteration 51 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 07:27:10,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 07:27:10,193 INFO L85 PathProgramCache]: Analyzing trace with hash -8057471, now seen corresponding path program 1 times [2022-03-20 07:27:10,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 07:27:10,194 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302545273] [2022-03-20 07:27:10,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 07:27:10,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 07:27:10,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:27:10,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 07:27:10,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:27:10,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 07:27:10,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:27:10,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 07:27:10,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:27:10,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-20 07:27:10,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:27:10,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-20 07:27:10,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:27:10,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-03-20 07:27:10,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:27:10,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-20 07:27:10,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:27:10,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-20 07:27:10,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:27:10,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 07:27:10,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 07:27:10,488 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302545273] [2022-03-20 07:27:10,488 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1302545273] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 07:27:10,488 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 07:27:10,488 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2022-03-20 07:27:10,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440118680] [2022-03-20 07:27:10,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 07:27:10,488 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-03-20 07:27:10,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 07:27:10,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-03-20 07:27:10,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=441, Unknown=0, NotChecked=0, Total=506 [2022-03-20 07:27:10,489 INFO L87 Difference]: Start difference. First operand 688 states and 858 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) [2022-03-20 07:27:12,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 07:27:12,683 INFO L93 Difference]: Finished difference Result 759 states and 958 transitions. [2022-03-20 07:27:12,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-03-20 07:27:12,683 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 [2022-03-20 07:27:12,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 07:27:12,684 INFO L225 Difference]: With dead ends: 759 [2022-03-20 07:27:12,684 INFO L226 Difference]: Without dead ends: 735 [2022-03-20 07:27:12,685 INFO L912 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 [2022-03-20 07:27:12,685 INFO L913 BasicCegarLoop]: 450 mSDtfsCounter, 767 mSDsluCounter, 2554 mSDsCounter, 0 mSdLazyCounter, 5469 mSolverCounterSat, 285 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 769 SdHoareTripleChecker+Valid, 3004 SdHoareTripleChecker+Invalid, 5754 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 285 IncrementalHoareTripleChecker+Valid, 5469 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-03-20 07:27:12,685 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [769 Valid, 3004 Invalid, 5754 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [285 Valid, 5469 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-03-20 07:27:12,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 735 states. [2022-03-20 07:27:12,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 735 to 685. [2022-03-20 07:27:12,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 685 states, 543 states have (on average 1.2578268876611418) internal successors, (683), 558 states have internal predecessors, (683), 74 states have call successors, (74), 48 states have call predecessors, (74), 67 states have return successors, (96), 86 states have call predecessors, (96), 68 states have call successors, (96) [2022-03-20 07:27:12,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 685 states to 685 states and 853 transitions. [2022-03-20 07:27:12,691 INFO L78 Accepts]: Start accepts. Automaton has 685 states and 853 transitions. Word has length 70 [2022-03-20 07:27:12,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 07:27:12,693 INFO L478 AbstractCegarLoop]: Abstraction has 685 states and 853 transitions. [2022-03-20 07:27:12,694 INFO L479 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) [2022-03-20 07:27:12,694 INFO L276 IsEmpty]: Start isEmpty. Operand 685 states and 853 transitions. [2022-03-20 07:27:12,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-03-20 07:27:12,695 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 07:27:12,695 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 07:27:12,695 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2022-03-20 07:27:12,695 INFO L403 AbstractCegarLoop]: === Iteration 52 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 07:27:12,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 07:27:12,695 INFO L85 PathProgramCache]: Analyzing trace with hash 226042889, now seen corresponding path program 1 times [2022-03-20 07:27:12,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 07:27:12,695 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450282033] [2022-03-20 07:27:12,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 07:27:12,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 07:27:12,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:27:12,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 07:27:12,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:27:12,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 07:27:12,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:27:12,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 07:27:12,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:27:12,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-20 07:27:12,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:27:12,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-20 07:27:12,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:27:12,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-20 07:27:12,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:27:12,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-20 07:27:12,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:27:12,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 07:27:12,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 07:27:12,985 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450282033] [2022-03-20 07:27:12,985 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1450282033] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 07:27:12,985 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 07:27:12,985 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-20 07:27:12,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404362381] [2022-03-20 07:27:12,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 07:27:12,985 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-20 07:27:12,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 07:27:12,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-20 07:27:12,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=296, Unknown=0, NotChecked=0, Total=342 [2022-03-20 07:27:12,986 INFO L87 Difference]: Start difference. First operand 685 states and 853 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) [2022-03-20 07:27:14,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 07:27:14,753 INFO L93 Difference]: Finished difference Result 752 states and 948 transitions. [2022-03-20 07:27:14,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-03-20 07:27:14,753 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 [2022-03-20 07:27:14,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 07:27:14,755 INFO L225 Difference]: With dead ends: 752 [2022-03-20 07:27:14,755 INFO L226 Difference]: Without dead ends: 733 [2022-03-20 07:27:14,755 INFO L912 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 [2022-03-20 07:27:14,755 INFO L913 BasicCegarLoop]: 450 mSDtfsCounter, 465 mSDsluCounter, 1926 mSDsCounter, 0 mSdLazyCounter, 4196 mSolverCounterSat, 176 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 467 SdHoareTripleChecker+Valid, 2376 SdHoareTripleChecker+Invalid, 4372 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 176 IncrementalHoareTripleChecker+Valid, 4196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-03-20 07:27:14,756 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [467 Valid, 2376 Invalid, 4372 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [176 Valid, 4196 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-03-20 07:27:14,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 733 states. [2022-03-20 07:27:14,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 733 to 683. [2022-03-20 07:27:14,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 683 states, 542 states have (on average 1.2564575645756457) internal successors, (681), 557 states have internal predecessors, (681), 73 states have call successors, (73), 48 states have call predecessors, (73), 67 states have return successors, (95), 85 states have call predecessors, (95), 67 states have call successors, (95) [2022-03-20 07:27:14,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 683 states to 683 states and 849 transitions. [2022-03-20 07:27:14,761 INFO L78 Accepts]: Start accepts. Automaton has 683 states and 849 transitions. Word has length 72 [2022-03-20 07:27:14,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 07:27:14,761 INFO L478 AbstractCegarLoop]: Abstraction has 683 states and 849 transitions. [2022-03-20 07:27:14,761 INFO L479 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) [2022-03-20 07:27:14,762 INFO L276 IsEmpty]: Start isEmpty. Operand 683 states and 849 transitions. [2022-03-20 07:27:14,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-03-20 07:27:14,762 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 07:27:14,762 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 07:27:14,763 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2022-03-20 07:27:14,763 INFO L403 AbstractCegarLoop]: === Iteration 53 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 07:27:14,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 07:27:14,763 INFO L85 PathProgramCache]: Analyzing trace with hash 1536662915, now seen corresponding path program 1 times [2022-03-20 07:27:14,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 07:27:14,763 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557017112] [2022-03-20 07:27:14,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 07:27:14,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 07:27:14,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:27:14,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 07:27:14,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:27:14,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 07:27:14,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:27:14,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 07:27:14,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:27:14,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-20 07:27:14,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:27:14,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-20 07:27:14,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:27:14,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-03-20 07:27:14,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:27:15,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-20 07:27:15,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:27:15,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 07:27:15,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 07:27:15,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557017112] [2022-03-20 07:27:15,061 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [557017112] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 07:27:15,061 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 07:27:15,062 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-20 07:27:15,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183398417] [2022-03-20 07:27:15,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 07:27:15,062 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-20 07:27:15,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 07:27:15,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-20 07:27:15,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=296, Unknown=0, NotChecked=0, Total=342 [2022-03-20 07:27:15,063 INFO L87 Difference]: Start difference. First operand 683 states and 849 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) [2022-03-20 07:27:16,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 07:27:16,739 INFO L93 Difference]: Finished difference Result 747 states and 941 transitions. [2022-03-20 07:27:16,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-03-20 07:27:16,739 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 [2022-03-20 07:27:16,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 07:27:16,741 INFO L225 Difference]: With dead ends: 747 [2022-03-20 07:27:16,741 INFO L226 Difference]: Without dead ends: 719 [2022-03-20 07:27:16,741 INFO L912 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 [2022-03-20 07:27:16,741 INFO L913 BasicCegarLoop]: 440 mSDtfsCounter, 235 mSDsluCounter, 1934 mSDsCounter, 0 mSdLazyCounter, 4800 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 237 SdHoareTripleChecker+Valid, 2374 SdHoareTripleChecker+Invalid, 4890 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 4800 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-03-20 07:27:16,741 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [237 Valid, 2374 Invalid, 4890 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 4800 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-03-20 07:27:16,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 719 states. [2022-03-20 07:27:16,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 719 to 671. [2022-03-20 07:27:16,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 671 states, 533 states have (on average 1.2570356472795496) internal successors, (670), 548 states have internal predecessors, (670), 71 states have call successors, (71), 48 states have call predecessors, (71), 66 states have return successors, (92), 82 states have call predecessors, (92), 65 states have call successors, (92) [2022-03-20 07:27:16,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 671 states to 671 states and 833 transitions. [2022-03-20 07:27:16,747 INFO L78 Accepts]: Start accepts. Automaton has 671 states and 833 transitions. Word has length 69 [2022-03-20 07:27:16,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 07:27:16,747 INFO L478 AbstractCegarLoop]: Abstraction has 671 states and 833 transitions. [2022-03-20 07:27:16,747 INFO L479 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) [2022-03-20 07:27:16,747 INFO L276 IsEmpty]: Start isEmpty. Operand 671 states and 833 transitions. [2022-03-20 07:27:16,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-03-20 07:27:16,748 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 07:27:16,748 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 07:27:16,748 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2022-03-20 07:27:16,748 INFO L403 AbstractCegarLoop]: === Iteration 54 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 07:27:16,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 07:27:16,749 INFO L85 PathProgramCache]: Analyzing trace with hash 300413188, now seen corresponding path program 1 times [2022-03-20 07:27:16,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 07:27:16,749 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720676812] [2022-03-20 07:27:16,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 07:27:16,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 07:27:16,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:27:16,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 07:27:16,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:27:16,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 07:27:16,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:27:16,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 07:27:16,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:27:16,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-20 07:27:16,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:27:16,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-03-20 07:27:16,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:27:16,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-03-20 07:27:16,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:27:16,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-20 07:27:16,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:27:16,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 07:27:16,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 07:27:16,976 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720676812] [2022-03-20 07:27:16,976 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [720676812] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 07:27:16,976 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 07:27:16,976 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-20 07:27:16,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133597475] [2022-03-20 07:27:16,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 07:27:16,977 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-20 07:27:16,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 07:27:16,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-20 07:27:16,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2022-03-20 07:27:16,977 INFO L87 Difference]: Start difference. First operand 671 states and 833 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) [2022-03-20 07:27:17,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 07:27:17,987 INFO L93 Difference]: Finished difference Result 794 states and 1003 transitions. [2022-03-20 07:27:17,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-03-20 07:27:17,988 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 [2022-03-20 07:27:17,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 07:27:17,989 INFO L225 Difference]: With dead ends: 794 [2022-03-20 07:27:17,989 INFO L226 Difference]: Without dead ends: 794 [2022-03-20 07:27:17,989 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=137, Invalid=325, Unknown=0, NotChecked=0, Total=462 [2022-03-20 07:27:17,990 INFO L913 BasicCegarLoop]: 444 mSDtfsCounter, 1893 mSDsluCounter, 507 mSDsCounter, 0 mSdLazyCounter, 1453 mSolverCounterSat, 665 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1900 SdHoareTripleChecker+Valid, 951 SdHoareTripleChecker+Invalid, 2118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 665 IncrementalHoareTripleChecker+Valid, 1453 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-20 07:27:17,990 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1900 Valid, 951 Invalid, 2118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [665 Valid, 1453 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-20 07:27:17,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 794 states. [2022-03-20 07:27:17,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 794 to 669. [2022-03-20 07:27:17,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 669 states, 531 states have (on average 1.256120527306968) internal successors, (667), 546 states have internal predecessors, (667), 71 states have call successors, (71), 48 states have call predecessors, (71), 66 states have return successors, (92), 82 states have call predecessors, (92), 65 states have call successors, (92) [2022-03-20 07:27:17,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 669 states to 669 states and 830 transitions. [2022-03-20 07:27:17,996 INFO L78 Accepts]: Start accepts. Automaton has 669 states and 830 transitions. Word has length 69 [2022-03-20 07:27:17,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 07:27:17,996 INFO L478 AbstractCegarLoop]: Abstraction has 669 states and 830 transitions. [2022-03-20 07:27:17,996 INFO L479 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) [2022-03-20 07:27:17,996 INFO L276 IsEmpty]: Start isEmpty. Operand 669 states and 830 transitions. [2022-03-20 07:27:17,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-03-20 07:27:17,997 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 07:27:17,997 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 07:27:17,997 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2022-03-20 07:27:17,997 INFO L403 AbstractCegarLoop]: === Iteration 55 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 07:27:17,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 07:27:17,997 INFO L85 PathProgramCache]: Analyzing trace with hash 300444932, now seen corresponding path program 1 times [2022-03-20 07:27:17,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 07:27:17,997 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299808250] [2022-03-20 07:27:17,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 07:27:17,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 07:27:18,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:27:18,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 07:27:18,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:27:18,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 07:27:18,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:27:18,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 07:27:18,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:27:18,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-20 07:27:18,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:27:18,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-03-20 07:27:18,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:27:18,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-03-20 07:27:18,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:27:18,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-20 07:27:18,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:27:18,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 07:27:18,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 07:27:18,206 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299808250] [2022-03-20 07:27:18,206 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [299808250] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 07:27:18,206 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 07:27:18,206 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-03-20 07:27:18,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779745377] [2022-03-20 07:27:18,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 07:27:18,206 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-03-20 07:27:18,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 07:27:18,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-03-20 07:27:18,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=256, Unknown=0, NotChecked=0, Total=306 [2022-03-20 07:27:18,207 INFO L87 Difference]: Start difference. First operand 669 states and 830 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) [2022-03-20 07:27:19,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 07:27:19,338 INFO L93 Difference]: Finished difference Result 724 states and 909 transitions. [2022-03-20 07:27:19,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-03-20 07:27:19,339 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 [2022-03-20 07:27:19,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 07:27:19,340 INFO L225 Difference]: With dead ends: 724 [2022-03-20 07:27:19,340 INFO L226 Difference]: Without dead ends: 692 [2022-03-20 07:27:19,340 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=100, Invalid=656, Unknown=0, NotChecked=0, Total=756 [2022-03-20 07:27:19,341 INFO L913 BasicCegarLoop]: 384 mSDtfsCounter, 379 mSDsluCounter, 1252 mSDsCounter, 0 mSdLazyCounter, 3909 mSolverCounterSat, 121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 392 SdHoareTripleChecker+Valid, 1636 SdHoareTripleChecker+Invalid, 4030 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 121 IncrementalHoareTripleChecker+Valid, 3909 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-03-20 07:27:19,341 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [392 Valid, 1636 Invalid, 4030 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [121 Valid, 3909 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-03-20 07:27:19,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 692 states. [2022-03-20 07:27:19,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 692 to 640. [2022-03-20 07:27:19,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 640 states, 507 states have (on average 1.252465483234714) internal successors, (635), 521 states have internal predecessors, (635), 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) [2022-03-20 07:27:19,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 640 states to 640 states and 793 transitions. [2022-03-20 07:27:19,346 INFO L78 Accepts]: Start accepts. Automaton has 640 states and 793 transitions. Word has length 69 [2022-03-20 07:27:19,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 07:27:19,346 INFO L478 AbstractCegarLoop]: Abstraction has 640 states and 793 transitions. [2022-03-20 07:27:19,346 INFO L479 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) [2022-03-20 07:27:19,346 INFO L276 IsEmpty]: Start isEmpty. Operand 640 states and 793 transitions. [2022-03-20 07:27:19,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-03-20 07:27:19,347 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 07:27:19,347 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 07:27:19,347 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2022-03-20 07:27:19,347 INFO L403 AbstractCegarLoop]: === Iteration 56 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 07:27:19,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 07:27:19,347 INFO L85 PathProgramCache]: Analyzing trace with hash 1365836196, now seen corresponding path program 1 times [2022-03-20 07:27:19,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 07:27:19,348 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519509574] [2022-03-20 07:27:19,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 07:27:19,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 07:27:19,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:27:19,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 07:27:19,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:27:19,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 07:27:19,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:27:19,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 07:27:19,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:27:19,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-20 07:27:19,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:27:19,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-20 07:27:19,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:27:19,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-03-20 07:27:19,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:27:19,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-03-20 07:27:19,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:27:19,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 07:27:19,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 07:27:19,493 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519509574] [2022-03-20 07:27:19,493 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1519509574] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 07:27:19,493 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 07:27:19,494 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-20 07:27:19,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302588886] [2022-03-20 07:27:19,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 07:27:19,494 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-20 07:27:19,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 07:27:19,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-20 07:27:19,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2022-03-20 07:27:19,494 INFO L87 Difference]: Start difference. First operand 640 states and 793 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) [2022-03-20 07:27:20,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 07:27:20,442 INFO L93 Difference]: Finished difference Result 688 states and 865 transitions. [2022-03-20 07:27:20,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-20 07:27:20,442 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 [2022-03-20 07:27:20,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 07:27:20,444 INFO L225 Difference]: With dead ends: 688 [2022-03-20 07:27:20,444 INFO L226 Difference]: Without dead ends: 683 [2022-03-20 07:27:20,444 INFO L912 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 [2022-03-20 07:27:20,444 INFO L913 BasicCegarLoop]: 429 mSDtfsCounter, 893 mSDsluCounter, 744 mSDsCounter, 0 mSdLazyCounter, 1273 mSolverCounterSat, 333 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 895 SdHoareTripleChecker+Valid, 1173 SdHoareTripleChecker+Invalid, 1606 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 333 IncrementalHoareTripleChecker+Valid, 1273 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-20 07:27:20,444 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [895 Valid, 1173 Invalid, 1606 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [333 Valid, 1273 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-20 07:27:20,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 683 states. [2022-03-20 07:27:20,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 683 to 635. [2022-03-20 07:27:20,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 635 states, 503 states have (on average 1.2524850894632207) internal successors, (630), 517 states have internal predecessors, (630), 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) [2022-03-20 07:27:20,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 635 states to 635 states and 786 transitions. [2022-03-20 07:27:20,450 INFO L78 Accepts]: Start accepts. Automaton has 635 states and 786 transitions. Word has length 69 [2022-03-20 07:27:20,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 07:27:20,450 INFO L478 AbstractCegarLoop]: Abstraction has 635 states and 786 transitions. [2022-03-20 07:27:20,450 INFO L479 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) [2022-03-20 07:27:20,450 INFO L276 IsEmpty]: Start isEmpty. Operand 635 states and 786 transitions. [2022-03-20 07:27:20,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-03-20 07:27:20,451 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 07:27:20,451 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 07:27:20,451 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2022-03-20 07:27:20,451 INFO L403 AbstractCegarLoop]: === Iteration 57 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 07:27:20,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 07:27:20,452 INFO L85 PathProgramCache]: Analyzing trace with hash -415492251, now seen corresponding path program 1 times [2022-03-20 07:27:20,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 07:27:20,452 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607541507] [2022-03-20 07:27:20,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 07:27:20,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 07:27:20,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:27:20,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 07:27:20,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:27:20,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 07:27:20,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:27:20,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 07:27:20,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:27:20,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-20 07:27:20,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:27:20,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-20 07:27:20,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:27:20,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-20 07:27:20,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:27:20,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-03-20 07:27:20,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:27:20,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 07:27:20,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 07:27:20,679 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607541507] [2022-03-20 07:27:20,679 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [607541507] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 07:27:20,679 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 07:27:20,679 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-03-20 07:27:20,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267675975] [2022-03-20 07:27:20,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 07:27:20,679 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-03-20 07:27:20,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 07:27:20,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-03-20 07:27:20,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=256, Unknown=0, NotChecked=0, Total=306 [2022-03-20 07:27:20,680 INFO L87 Difference]: Start difference. First operand 635 states and 786 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) [2022-03-20 07:27:22,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 07:27:22,325 INFO L93 Difference]: Finished difference Result 707 states and 886 transitions. [2022-03-20 07:27:22,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-03-20 07:27:22,325 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 [2022-03-20 07:27:22,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 07:27:22,326 INFO L225 Difference]: With dead ends: 707 [2022-03-20 07:27:22,326 INFO L226 Difference]: Without dead ends: 680 [2022-03-20 07:27:22,327 INFO L912 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 [2022-03-20 07:27:22,327 INFO L913 BasicCegarLoop]: 444 mSDtfsCounter, 1120 mSDsluCounter, 1711 mSDsCounter, 0 mSdLazyCounter, 3369 mSolverCounterSat, 404 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1123 SdHoareTripleChecker+Valid, 2155 SdHoareTripleChecker+Invalid, 3773 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 404 IncrementalHoareTripleChecker+Valid, 3369 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-03-20 07:27:22,327 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1123 Valid, 2155 Invalid, 3773 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [404 Valid, 3369 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-03-20 07:27:22,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 680 states. [2022-03-20 07:27:22,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 680 to 632. [2022-03-20 07:27:22,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 632 states, 501 states have (on average 1.251497005988024) internal successors, (627), 515 states have internal predecessors, (627), 68 states have call successors, (68), 47 states have call predecessors, (68), 62 states have return successors, (86), 76 states have call predecessors, (86), 62 states have call successors, (86) [2022-03-20 07:27:22,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 632 states to 632 states and 781 transitions. [2022-03-20 07:27:22,335 INFO L78 Accepts]: Start accepts. Automaton has 632 states and 781 transitions. Word has length 69 [2022-03-20 07:27:22,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 07:27:22,335 INFO L478 AbstractCegarLoop]: Abstraction has 632 states and 781 transitions. [2022-03-20 07:27:22,335 INFO L479 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) [2022-03-20 07:27:22,335 INFO L276 IsEmpty]: Start isEmpty. Operand 632 states and 781 transitions. [2022-03-20 07:27:22,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-03-20 07:27:22,336 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 07:27:22,336 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 07:27:22,336 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2022-03-20 07:27:22,336 INFO L403 AbstractCegarLoop]: === Iteration 58 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 07:27:22,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 07:27:22,337 INFO L85 PathProgramCache]: Analyzing trace with hash 135714178, now seen corresponding path program 1 times [2022-03-20 07:27:22,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 07:27:22,337 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94558319] [2022-03-20 07:27:22,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 07:27:22,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 07:27:22,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:27:22,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 07:27:22,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:27:22,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 07:27:22,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:27:22,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 07:27:22,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:27:22,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-20 07:27:22,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:27:22,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-20 07:27:22,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:27:22,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-03-20 07:27:22,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:27:22,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-20 07:27:22,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:27:22,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-20 07:27:22,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:27:22,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 07:27:22,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 07:27:22,512 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94558319] [2022-03-20 07:27:22,512 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [94558319] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 07:27:22,512 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 07:27:22,512 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-03-20 07:27:22,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331129394] [2022-03-20 07:27:22,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 07:27:22,513 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-03-20 07:27:22,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 07:27:22,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-03-20 07:27:22,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2022-03-20 07:27:22,513 INFO L87 Difference]: Start difference. First operand 632 states and 781 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) [2022-03-20 07:27:23,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 07:27:23,496 INFO L93 Difference]: Finished difference Result 684 states and 858 transitions. [2022-03-20 07:27:23,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-20 07:27:23,496 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 [2022-03-20 07:27:23,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 07:27:23,498 INFO L225 Difference]: With dead ends: 684 [2022-03-20 07:27:23,498 INFO L226 Difference]: Without dead ends: 684 [2022-03-20 07:27:23,498 INFO L912 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 [2022-03-20 07:27:23,498 INFO L913 BasicCegarLoop]: 419 mSDtfsCounter, 689 mSDsluCounter, 743 mSDsCounter, 0 mSdLazyCounter, 1434 mSolverCounterSat, 251 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 690 SdHoareTripleChecker+Valid, 1162 SdHoareTripleChecker+Invalid, 1685 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 251 IncrementalHoareTripleChecker+Valid, 1434 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-20 07:27:23,498 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [690 Valid, 1162 Invalid, 1685 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [251 Valid, 1434 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-20 07:27:23,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 684 states. [2022-03-20 07:27:23,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 684 to 632. [2022-03-20 07:27:23,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 632 states, 501 states have (on average 1.249500998003992) internal successors, (626), 515 states have internal predecessors, (626), 68 states have call successors, (68), 47 states have call predecessors, (68), 62 states have return successors, (86), 76 states have call predecessors, (86), 62 states have call successors, (86) [2022-03-20 07:27:23,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 632 states to 632 states and 780 transitions. [2022-03-20 07:27:23,504 INFO L78 Accepts]: Start accepts. Automaton has 632 states and 780 transitions. Word has length 71 [2022-03-20 07:27:23,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 07:27:23,504 INFO L478 AbstractCegarLoop]: Abstraction has 632 states and 780 transitions. [2022-03-20 07:27:23,504 INFO L479 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) [2022-03-20 07:27:23,504 INFO L276 IsEmpty]: Start isEmpty. Operand 632 states and 780 transitions. [2022-03-20 07:27:23,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-03-20 07:27:23,505 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 07:27:23,505 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 07:27:23,505 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2022-03-20 07:27:23,505 INFO L403 AbstractCegarLoop]: === Iteration 59 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 07:27:23,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 07:27:23,505 INFO L85 PathProgramCache]: Analyzing trace with hash 1161206177, now seen corresponding path program 1 times [2022-03-20 07:27:23,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 07:27:23,506 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76095076] [2022-03-20 07:27:23,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 07:27:23,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 07:27:23,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:27:23,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 07:27:23,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:27:23,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 07:27:23,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:27:23,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 07:27:23,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:27:23,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-20 07:27:23,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:27:23,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-20 07:27:23,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:27:23,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-03-20 07:27:23,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:27:23,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-20 07:27:23,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:27:23,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-20 07:27:23,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:27:23,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 07:27:23,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 07:27:23,769 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76095076] [2022-03-20 07:27:23,769 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [76095076] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 07:27:23,769 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 07:27:23,769 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-20 07:27:23,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412096336] [2022-03-20 07:27:23,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 07:27:23,769 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-20 07:27:23,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 07:27:23,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-20 07:27:23,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=359, Unknown=0, NotChecked=0, Total=420 [2022-03-20 07:27:23,770 INFO L87 Difference]: Start difference. First operand 632 states and 780 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) [2022-03-20 07:27:25,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 07:27:25,579 INFO L93 Difference]: Finished difference Result 717 states and 901 transitions. [2022-03-20 07:27:25,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-03-20 07:27:25,579 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 [2022-03-20 07:27:25,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 07:27:25,581 INFO L225 Difference]: With dead ends: 717 [2022-03-20 07:27:25,581 INFO L226 Difference]: Without dead ends: 682 [2022-03-20 07:27:25,581 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=120, Invalid=692, Unknown=0, NotChecked=0, Total=812 [2022-03-20 07:27:25,581 INFO L913 BasicCegarLoop]: 429 mSDtfsCounter, 710 mSDsluCounter, 1987 mSDsCounter, 0 mSdLazyCounter, 4034 mSolverCounterSat, 263 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 714 SdHoareTripleChecker+Valid, 2416 SdHoareTripleChecker+Invalid, 4297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 263 IncrementalHoareTripleChecker+Valid, 4034 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-03-20 07:27:25,581 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [714 Valid, 2416 Invalid, 4297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [263 Valid, 4034 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-03-20 07:27:25,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 682 states. [2022-03-20 07:27:25,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 682 to 627. [2022-03-20 07:27:25,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 627 states, 497 states have (on average 1.2454728370221329) internal successors, (619), 511 states have internal predecessors, (619), 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) [2022-03-20 07:27:25,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 627 states to 627 states and 770 transitions. [2022-03-20 07:27:25,586 INFO L78 Accepts]: Start accepts. Automaton has 627 states and 770 transitions. Word has length 71 [2022-03-20 07:27:25,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 07:27:25,587 INFO L478 AbstractCegarLoop]: Abstraction has 627 states and 770 transitions. [2022-03-20 07:27:25,587 INFO L479 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) [2022-03-20 07:27:25,587 INFO L276 IsEmpty]: Start isEmpty. Operand 627 states and 770 transitions. [2022-03-20 07:27:25,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-03-20 07:27:25,587 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 07:27:25,588 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 07:27:25,588 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2022-03-20 07:27:25,588 INFO L403 AbstractCegarLoop]: === Iteration 60 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 07:27:25,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 07:27:25,588 INFO L85 PathProgramCache]: Analyzing trace with hash -1109131485, now seen corresponding path program 1 times [2022-03-20 07:27:25,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 07:27:25,588 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902297792] [2022-03-20 07:27:25,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 07:27:25,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 07:27:25,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:27:25,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 07:27:25,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:27:25,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 07:27:25,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:27:25,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 07:27:25,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:27:25,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-20 07:27:25,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:27:25,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-20 07:27:25,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:27:25,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-03-20 07:27:25,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:27:25,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-20 07:27:25,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:27:25,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-20 07:27:25,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:27:25,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 07:27:25,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 07:27:25,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902297792] [2022-03-20 07:27:25,757 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1902297792] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 07:27:25,757 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 07:27:25,757 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-03-20 07:27:25,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177499000] [2022-03-20 07:27:25,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 07:27:25,757 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-03-20 07:27:25,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 07:27:25,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-03-20 07:27:25,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2022-03-20 07:27:25,758 INFO L87 Difference]: Start difference. First operand 627 states and 770 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) [2022-03-20 07:27:26,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 07:27:26,814 INFO L93 Difference]: Finished difference Result 677 states and 844 transitions. [2022-03-20 07:27:26,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-20 07:27:26,814 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 [2022-03-20 07:27:26,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 07:27:26,815 INFO L225 Difference]: With dead ends: 677 [2022-03-20 07:27:26,815 INFO L226 Difference]: Without dead ends: 671 [2022-03-20 07:27:26,815 INFO L912 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 [2022-03-20 07:27:26,816 INFO L913 BasicCegarLoop]: 408 mSDtfsCounter, 442 mSDsluCounter, 737 mSDsCounter, 0 mSdLazyCounter, 1646 mSolverCounterSat, 165 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 443 SdHoareTripleChecker+Valid, 1145 SdHoareTripleChecker+Invalid, 1811 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 165 IncrementalHoareTripleChecker+Valid, 1646 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-03-20 07:27:26,816 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [443 Valid, 1145 Invalid, 1811 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [165 Valid, 1646 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-03-20 07:27:26,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 671 states. [2022-03-20 07:27:26,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 671 to 621. [2022-03-20 07:27:26,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 621 states, 492 states have (on average 1.2459349593495934) internal successors, (613), 506 states have internal predecessors, (613), 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) [2022-03-20 07:27:26,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 621 states to 621 states and 762 transitions. [2022-03-20 07:27:26,821 INFO L78 Accepts]: Start accepts. Automaton has 621 states and 762 transitions. Word has length 71 [2022-03-20 07:27:26,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 07:27:26,821 INFO L478 AbstractCegarLoop]: Abstraction has 621 states and 762 transitions. [2022-03-20 07:27:26,821 INFO L479 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) [2022-03-20 07:27:26,821 INFO L276 IsEmpty]: Start isEmpty. Operand 621 states and 762 transitions. [2022-03-20 07:27:26,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-03-20 07:27:26,822 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 07:27:26,822 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 07:27:26,822 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2022-03-20 07:27:26,822 INFO L403 AbstractCegarLoop]: === Iteration 61 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 07:27:26,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 07:27:26,822 INFO L85 PathProgramCache]: Analyzing trace with hash -1256769401, now seen corresponding path program 1 times [2022-03-20 07:27:26,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 07:27:26,823 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910503131] [2022-03-20 07:27:26,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 07:27:26,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 07:27:26,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:27:26,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 07:27:26,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:27:26,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 07:27:26,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:27:26,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 07:27:26,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:27:26,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-20 07:27:26,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:27:26,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-03-20 07:27:26,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:27:27,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-03-20 07:27:27,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:27:27,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-20 07:27:27,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:27:27,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 07:27:27,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 07:27:27,058 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910503131] [2022-03-20 07:27:27,059 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1910503131] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 07:27:27,059 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 07:27:27,059 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-03-20 07:27:27,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330825217] [2022-03-20 07:27:27,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 07:27:27,059 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-03-20 07:27:27,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 07:27:27,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-03-20 07:27:27,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=256, Unknown=0, NotChecked=0, Total=306 [2022-03-20 07:27:27,059 INFO L87 Difference]: Start difference. First operand 621 states and 762 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) [2022-03-20 07:27:28,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 07:27:28,473 INFO L93 Difference]: Finished difference Result 738 states and 910 transitions. [2022-03-20 07:27:28,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-03-20 07:27:28,473 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 [2022-03-20 07:27:28,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 07:27:28,474 INFO L225 Difference]: With dead ends: 738 [2022-03-20 07:27:28,474 INFO L226 Difference]: Without dead ends: 713 [2022-03-20 07:27:28,475 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=112, Invalid=700, Unknown=0, NotChecked=0, Total=812 [2022-03-20 07:27:28,475 INFO L913 BasicCegarLoop]: 382 mSDtfsCounter, 753 mSDsluCounter, 1635 mSDsCounter, 0 mSdLazyCounter, 3547 mSolverCounterSat, 264 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 766 SdHoareTripleChecker+Valid, 2017 SdHoareTripleChecker+Invalid, 3811 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 264 IncrementalHoareTripleChecker+Valid, 3547 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-03-20 07:27:28,475 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [766 Valid, 2017 Invalid, 3811 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [264 Valid, 3547 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-03-20 07:27:28,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 713 states. [2022-03-20 07:27:28,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 713 to 627. [2022-03-20 07:27:28,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 627 states, 498 states have (on average 1.2349397590361446) internal successors, (615), 512 states have internal predecessors, (615), 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) [2022-03-20 07:27:28,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 627 states to 627 states and 764 transitions. [2022-03-20 07:27:28,481 INFO L78 Accepts]: Start accepts. Automaton has 627 states and 764 transitions. Word has length 71 [2022-03-20 07:27:28,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 07:27:28,481 INFO L478 AbstractCegarLoop]: Abstraction has 627 states and 764 transitions. [2022-03-20 07:27:28,481 INFO L479 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) [2022-03-20 07:27:28,481 INFO L276 IsEmpty]: Start isEmpty. Operand 627 states and 764 transitions. [2022-03-20 07:27:28,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-03-20 07:27:28,482 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 07:27:28,482 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 07:27:28,482 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2022-03-20 07:27:28,482 INFO L403 AbstractCegarLoop]: === Iteration 62 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 07:27:28,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 07:27:28,482 INFO L85 PathProgramCache]: Analyzing trace with hash 958622839, now seen corresponding path program 1 times [2022-03-20 07:27:28,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 07:27:28,482 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026255677] [2022-03-20 07:27:28,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 07:27:28,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 07:27:28,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:27:28,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 07:27:28,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:27:28,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 07:27:28,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:27:28,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 07:27:28,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:27:28,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-20 07:27:28,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:27:28,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-20 07:27:28,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:27:28,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-03-20 07:27:28,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:27:28,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-20 07:27:28,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:27:28,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-20 07:27:28,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:27:28,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 07:27:28,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 07:27:28,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026255677] [2022-03-20 07:27:28,633 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1026255677] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 07:27:28,633 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 07:27:28,633 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-03-20 07:27:28,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760968888] [2022-03-20 07:27:28,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 07:27:28,633 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-03-20 07:27:28,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 07:27:28,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-03-20 07:27:28,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2022-03-20 07:27:28,633 INFO L87 Difference]: Start difference. First operand 627 states and 764 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) [2022-03-20 07:27:29,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 07:27:29,225 INFO L93 Difference]: Finished difference Result 676 states and 836 transitions. [2022-03-20 07:27:29,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-20 07:27:29,225 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 [2022-03-20 07:27:29,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 07:27:29,226 INFO L225 Difference]: With dead ends: 676 [2022-03-20 07:27:29,226 INFO L226 Difference]: Without dead ends: 665 [2022-03-20 07:27:29,226 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2022-03-20 07:27:29,226 INFO L913 BasicCegarLoop]: 399 mSDtfsCounter, 626 mSDsluCounter, 739 mSDsCounter, 0 mSdLazyCounter, 1164 mSolverCounterSat, 239 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 627 SdHoareTripleChecker+Valid, 1138 SdHoareTripleChecker+Invalid, 1403 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 239 IncrementalHoareTripleChecker+Valid, 1164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-20 07:27:29,227 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [627 Valid, 1138 Invalid, 1403 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [239 Valid, 1164 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-20 07:27:29,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 665 states. [2022-03-20 07:27:29,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 665 to 615. [2022-03-20 07:27:29,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 615 states, 487 states have (on average 1.2299794661190966) internal successors, (599), 501 states have internal predecessors, (599), 65 states have call successors, (65), 47 states have call predecessors, (65), 62 states have return successors, (82), 73 states have call predecessors, (82), 59 states have call successors, (82) [2022-03-20 07:27:29,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 615 states to 615 states and 746 transitions. [2022-03-20 07:27:29,232 INFO L78 Accepts]: Start accepts. Automaton has 615 states and 746 transitions. Word has length 73 [2022-03-20 07:27:29,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 07:27:29,232 INFO L478 AbstractCegarLoop]: Abstraction has 615 states and 746 transitions. [2022-03-20 07:27:29,233 INFO L479 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) [2022-03-20 07:27:29,233 INFO L276 IsEmpty]: Start isEmpty. Operand 615 states and 746 transitions. [2022-03-20 07:27:29,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-03-20 07:27:29,234 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 07:27:29,234 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 07:27:29,234 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2022-03-20 07:27:29,235 INFO L403 AbstractCegarLoop]: === Iteration 63 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 07:27:29,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 07:27:29,235 INFO L85 PathProgramCache]: Analyzing trace with hash 1514534938, now seen corresponding path program 1 times [2022-03-20 07:27:29,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 07:27:29,235 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721219736] [2022-03-20 07:27:29,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 07:27:29,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 07:27:29,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:27:29,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 07:27:29,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:27:29,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 07:27:29,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:27:29,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 07:27:29,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:27:29,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-20 07:27:29,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:27:29,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-03-20 07:27:29,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:27:29,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-03-20 07:27:29,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:27:29,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-20 07:27:29,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:27:29,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-20 07:27:29,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:27:29,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 07:27:29,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 07:27:29,484 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721219736] [2022-03-20 07:27:29,484 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1721219736] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 07:27:29,484 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 07:27:29,484 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-20 07:27:29,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510946540] [2022-03-20 07:27:29,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 07:27:29,485 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-20 07:27:29,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 07:27:29,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-20 07:27:29,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=276, Unknown=0, NotChecked=0, Total=342 [2022-03-20 07:27:29,485 INFO L87 Difference]: Start difference. First operand 615 states and 746 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) [2022-03-20 07:27:31,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 07:27:31,949 INFO L93 Difference]: Finished difference Result 1360 states and 1669 transitions. [2022-03-20 07:27:31,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-03-20 07:27:31,950 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 [2022-03-20 07:27:31,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 07:27:31,952 INFO L225 Difference]: With dead ends: 1360 [2022-03-20 07:27:31,952 INFO L226 Difference]: Without dead ends: 1353 [2022-03-20 07:27:31,952 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 749 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=676, Invalid=2630, Unknown=0, NotChecked=0, Total=3306 [2022-03-20 07:27:31,952 INFO L913 BasicCegarLoop]: 418 mSDtfsCounter, 2588 mSDsluCounter, 1014 mSDsCounter, 0 mSdLazyCounter, 3985 mSolverCounterSat, 858 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2593 SdHoareTripleChecker+Valid, 1432 SdHoareTripleChecker+Invalid, 4843 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 858 IncrementalHoareTripleChecker+Valid, 3985 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-03-20 07:27:31,952 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [2593 Valid, 1432 Invalid, 4843 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [858 Valid, 3985 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-03-20 07:27:31,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1353 states. [2022-03-20 07:27:31,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1353 to 974. [2022-03-20 07:27:31,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 974 states, 775 states have (on average 1.2490322580645161) internal successors, (968), 798 states have internal predecessors, (968), 99 states have call successors, (99), 77 states have call predecessors, (99), 99 states have return successors, (130), 105 states have call predecessors, (130), 93 states have call successors, (130) [2022-03-20 07:27:31,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 974 states to 974 states and 1197 transitions. [2022-03-20 07:27:31,962 INFO L78 Accepts]: Start accepts. Automaton has 974 states and 1197 transitions. Word has length 73 [2022-03-20 07:27:31,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 07:27:31,962 INFO L478 AbstractCegarLoop]: Abstraction has 974 states and 1197 transitions. [2022-03-20 07:27:31,962 INFO L479 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) [2022-03-20 07:27:31,962 INFO L276 IsEmpty]: Start isEmpty. Operand 974 states and 1197 transitions. [2022-03-20 07:27:31,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-03-20 07:27:31,964 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 07:27:31,964 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 07:27:31,964 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2022-03-20 07:27:31,964 INFO L403 AbstractCegarLoop]: === Iteration 64 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 07:27:31,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 07:27:31,964 INFO L85 PathProgramCache]: Analyzing trace with hash -293312583, now seen corresponding path program 1 times [2022-03-20 07:27:31,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 07:27:31,964 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114483771] [2022-03-20 07:27:31,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 07:27:31,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 07:27:31,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:27:32,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 07:27:32,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:27:32,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 07:27:32,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:27:32,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 07:27:32,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:27:32,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-20 07:27:32,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:27:32,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-03-20 07:27:32,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:27:32,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-03-20 07:27:32,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:27:32,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-20 07:27:32,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:27:32,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-20 07:27:32,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:27:32,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 07:27:32,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 07:27:32,113 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114483771] [2022-03-20 07:27:32,113 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [114483771] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 07:27:32,113 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 07:27:32,113 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-03-20 07:27:32,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599293642] [2022-03-20 07:27:32,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 07:27:32,113 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-03-20 07:27:32,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 07:27:32,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-03-20 07:27:32,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2022-03-20 07:27:32,114 INFO L87 Difference]: Start difference. First operand 974 states and 1197 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) [2022-03-20 07:27:33,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 07:27:33,800 INFO L93 Difference]: Finished difference Result 1243 states and 1537 transitions. [2022-03-20 07:27:33,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-03-20 07:27:33,801 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 [2022-03-20 07:27:33,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 07:27:33,803 INFO L225 Difference]: With dead ends: 1243 [2022-03-20 07:27:33,803 INFO L226 Difference]: Without dead ends: 1243 [2022-03-20 07:27:33,803 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=199, Invalid=613, Unknown=0, NotChecked=0, Total=812 [2022-03-20 07:27:33,805 INFO L913 BasicCegarLoop]: 697 mSDtfsCounter, 2475 mSDsluCounter, 711 mSDsCounter, 0 mSdLazyCounter, 2172 mSolverCounterSat, 822 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2479 SdHoareTripleChecker+Valid, 1408 SdHoareTripleChecker+Invalid, 2994 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 822 IncrementalHoareTripleChecker+Valid, 2172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-03-20 07:27:33,812 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [2479 Valid, 1408 Invalid, 2994 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [822 Valid, 2172 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-03-20 07:27:33,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1243 states. [2022-03-20 07:27:33,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1243 to 1067. [2022-03-20 07:27:33,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1067 states, 848 states have (on average 1.2382075471698113) internal successors, (1050), 866 states have internal predecessors, (1050), 113 states have call successors, (113), 81 states have call predecessors, (113), 105 states have return successors, (146), 124 states have call predecessors, (146), 107 states have call successors, (146) [2022-03-20 07:27:33,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1067 states to 1067 states and 1309 transitions. [2022-03-20 07:27:33,833 INFO L78 Accepts]: Start accepts. Automaton has 1067 states and 1309 transitions. Word has length 73 [2022-03-20 07:27:33,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 07:27:33,834 INFO L478 AbstractCegarLoop]: Abstraction has 1067 states and 1309 transitions. [2022-03-20 07:27:33,834 INFO L479 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) [2022-03-20 07:27:33,834 INFO L276 IsEmpty]: Start isEmpty. Operand 1067 states and 1309 transitions. [2022-03-20 07:27:33,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-03-20 07:27:33,835 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 07:27:33,835 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 07:27:33,835 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2022-03-20 07:27:33,835 INFO L403 AbstractCegarLoop]: === Iteration 65 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 07:27:33,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 07:27:33,836 INFO L85 PathProgramCache]: Analyzing trace with hash 1233732800, now seen corresponding path program 1 times [2022-03-20 07:27:33,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 07:27:33,836 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6983917] [2022-03-20 07:27:33,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 07:27:33,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 07:27:33,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:27:33,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 07:27:33,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:27:33,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 07:27:33,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:27:33,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 07:27:33,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:27:33,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-20 07:27:33,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:27:33,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-20 07:27:33,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:27:34,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-20 07:27:34,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:27:34,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 07:27:34,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:27:34,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-03-20 07:27:34,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:27:34,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-20 07:27:34,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:27:34,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 07:27:34,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 07:27:34,068 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [6983917] [2022-03-20 07:27:34,068 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [6983917] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 07:27:34,068 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 07:27:34,068 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-20 07:27:34,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117528397] [2022-03-20 07:27:34,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 07:27:34,068 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-20 07:27:34,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 07:27:34,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-20 07:27:34,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=359, Unknown=0, NotChecked=0, Total=420 [2022-03-20 07:27:34,069 INFO L87 Difference]: Start difference. First operand 1067 states and 1309 transitions. Second operand has 21 states, 21 states have (on average 2.7142857142857144) internal successors, (57), 10 states have internal predecessors, (57), 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) [2022-03-20 07:27:35,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 07:27:35,287 INFO L93 Difference]: Finished difference Result 1198 states and 1495 transitions. [2022-03-20 07:27:35,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-03-20 07:27:35,287 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.7142857142857144) internal successors, (57), 10 states have internal predecessors, (57), 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 77 [2022-03-20 07:27:35,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 07:27:35,288 INFO L225 Difference]: With dead ends: 1198 [2022-03-20 07:27:35,288 INFO L226 Difference]: Without dead ends: 1159 [2022-03-20 07:27:35,289 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=120, Invalid=692, Unknown=0, NotChecked=0, Total=812 [2022-03-20 07:27:35,289 INFO L913 BasicCegarLoop]: 397 mSDtfsCounter, 590 mSDsluCounter, 2086 mSDsCounter, 0 mSdLazyCounter, 4016 mSolverCounterSat, 229 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 593 SdHoareTripleChecker+Valid, 2483 SdHoareTripleChecker+Invalid, 4245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 229 IncrementalHoareTripleChecker+Valid, 4016 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-03-20 07:27:35,289 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [593 Valid, 2483 Invalid, 4245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [229 Valid, 4016 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-03-20 07:27:35,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1159 states. [2022-03-20 07:27:35,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1159 to 1063. [2022-03-20 07:27:35,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1063 states, 844 states have (on average 1.2369668246445498) internal successors, (1044), 862 states have internal predecessors, (1044), 113 states have call successors, (113), 81 states have call predecessors, (113), 105 states have return successors, (146), 124 states have call predecessors, (146), 107 states have call successors, (146) [2022-03-20 07:27:35,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1063 states to 1063 states and 1303 transitions. [2022-03-20 07:27:35,299 INFO L78 Accepts]: Start accepts. Automaton has 1063 states and 1303 transitions. Word has length 77 [2022-03-20 07:27:35,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 07:27:35,299 INFO L478 AbstractCegarLoop]: Abstraction has 1063 states and 1303 transitions. [2022-03-20 07:27:35,299 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.7142857142857144) internal successors, (57), 10 states have internal predecessors, (57), 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) [2022-03-20 07:27:35,299 INFO L276 IsEmpty]: Start isEmpty. Operand 1063 states and 1303 transitions. [2022-03-20 07:27:35,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-03-20 07:27:35,301 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 07:27:35,301 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 07:27:35,301 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2022-03-20 07:27:35,301 INFO L403 AbstractCegarLoop]: === Iteration 66 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 07:27:35,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 07:27:35,301 INFO L85 PathProgramCache]: Analyzing trace with hash -7999414, now seen corresponding path program 1 times [2022-03-20 07:27:35,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 07:27:35,301 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186867685] [2022-03-20 07:27:35,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 07:27:35,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 07:27:35,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:27:35,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 07:27:35,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:27:35,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 07:27:35,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:27:35,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 07:27:35,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:27:35,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-20 07:27:35,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:27:35,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-20 07:27:35,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:27:35,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-20 07:27:35,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:27:35,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-03-20 07:27:35,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:27:35,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-03-20 07:27:35,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:27:35,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-20 07:27:35,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:27:35,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 07:27:35,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 07:27:35,494 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186867685] [2022-03-20 07:27:35,494 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1186867685] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 07:27:35,494 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 07:27:35,494 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-03-20 07:27:35,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165013800] [2022-03-20 07:27:35,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 07:27:35,494 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-03-20 07:27:35,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 07:27:35,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-03-20 07:27:35,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2022-03-20 07:27:35,494 INFO L87 Difference]: Start difference. First operand 1063 states and 1303 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) [2022-03-20 07:27:36,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 07:27:36,648 INFO L93 Difference]: Finished difference Result 1155 states and 1435 transitions. [2022-03-20 07:27:36,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-20 07:27:36,648 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 [2022-03-20 07:27:36,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 07:27:36,650 INFO L225 Difference]: With dead ends: 1155 [2022-03-20 07:27:36,650 INFO L226 Difference]: Without dead ends: 1125 [2022-03-20 07:27:36,651 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2022-03-20 07:27:36,651 INFO L913 BasicCegarLoop]: 386 mSDtfsCounter, 565 mSDsluCounter, 1174 mSDsCounter, 0 mSdLazyCounter, 2165 mSolverCounterSat, 220 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 566 SdHoareTripleChecker+Valid, 1560 SdHoareTripleChecker+Invalid, 2385 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 220 IncrementalHoareTripleChecker+Valid, 2165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-03-20 07:27:36,651 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [566 Valid, 1560 Invalid, 2385 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [220 Valid, 2165 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-03-20 07:27:36,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1125 states. [2022-03-20 07:27:36,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1125 to 1045. [2022-03-20 07:27:36,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1045 states, 830 states have (on average 1.236144578313253) internal successors, (1026), 848 states have internal predecessors, (1026), 109 states have call successors, (109), 81 states have call predecessors, (109), 105 states have return successors, (140), 120 states have call predecessors, (140), 103 states have call successors, (140) [2022-03-20 07:27:36,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1045 states to 1045 states and 1275 transitions. [2022-03-20 07:27:36,661 INFO L78 Accepts]: Start accepts. Automaton has 1045 states and 1275 transitions. Word has length 75 [2022-03-20 07:27:36,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 07:27:36,661 INFO L478 AbstractCegarLoop]: Abstraction has 1045 states and 1275 transitions. [2022-03-20 07:27:36,661 INFO L479 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) [2022-03-20 07:27:36,661 INFO L276 IsEmpty]: Start isEmpty. Operand 1045 states and 1275 transitions. [2022-03-20 07:27:36,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-03-20 07:27:36,663 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 07:27:36,663 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 07:27:36,663 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2022-03-20 07:27:36,663 INFO L403 AbstractCegarLoop]: === Iteration 67 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 07:27:36,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 07:27:36,663 INFO L85 PathProgramCache]: Analyzing trace with hash -1981078137, now seen corresponding path program 1 times [2022-03-20 07:27:36,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 07:27:36,663 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78974401] [2022-03-20 07:27:36,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 07:27:36,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 07:27:36,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-20 07:27:36,674 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-03-20 07:27:36,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-20 07:27:36,712 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-03-20 07:27:36,712 INFO L618 BasicCegarLoop]: Counterexample is feasible [2022-03-20 07:27:36,713 INFO L788 garLoopResultBuilder]: Registering result UNSAFE for location errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-03-20 07:27:36,714 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2022-03-20 07:27:36,716 INFO L719 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] [2022-03-20 07:27:36,717 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-03-20 07:27:36,782 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.03 07:27:36 BasicIcfg [2022-03-20 07:27:36,782 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-03-20 07:27:36,783 INFO L158 Benchmark]: Toolchain (without parser) took 112252.90ms. Allocated memory was 191.9MB in the beginning and 576.7MB in the end (delta: 384.8MB). Free memory was 137.8MB in the beginning and 295.1MB in the end (delta: -157.3MB). Peak memory consumption was 229.1MB. Max. memory is 8.0GB. [2022-03-20 07:27:36,783 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 191.9MB. Free memory was 156.1MB in the beginning and 155.9MB in the end (delta: 125.9kB). There was no memory consumed. Max. memory is 8.0GB. [2022-03-20 07:27:36,783 INFO L158 Benchmark]: CACSL2BoogieTranslator took 505.20ms. Allocated memory was 191.9MB in the beginning and 237.0MB in the end (delta: 45.1MB). Free memory was 137.7MB in the beginning and 193.6MB in the end (delta: -55.9MB). Peak memory consumption was 7.5MB. Max. memory is 8.0GB. [2022-03-20 07:27:36,783 INFO L158 Benchmark]: Boogie Preprocessor took 74.15ms. Allocated memory is still 237.0MB. Free memory was 193.6MB in the beginning and 188.3MB in the end (delta: 5.2MB). Peak memory consumption was 5.2MB. Max. memory is 8.0GB. [2022-03-20 07:27:36,783 INFO L158 Benchmark]: RCFGBuilder took 1019.67ms. Allocated memory is still 237.0MB. Free memory was 188.3MB in the beginning and 180.0MB in the end (delta: 8.3MB). Peak memory consumption was 46.4MB. Max. memory is 8.0GB. [2022-03-20 07:27:36,783 INFO L158 Benchmark]: IcfgTransformer took 67.07ms. Allocated memory is still 237.0MB. Free memory was 180.0MB in the beginning and 172.2MB in the end (delta: 7.9MB). Peak memory consumption was 7.3MB. Max. memory is 8.0GB. [2022-03-20 07:27:36,783 INFO L158 Benchmark]: TraceAbstraction took 110569.01ms. Allocated memory was 237.0MB in the beginning and 576.7MB in the end (delta: 339.7MB). Free memory was 171.6MB in the beginning and 295.1MB in the end (delta: -123.5MB). Peak memory consumption was 216.3MB. Max. memory is 8.0GB. [2022-03-20 07:27:36,786 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 191.9MB. Free memory was 156.1MB in the beginning and 155.9MB in the end (delta: 125.9kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 505.20ms. Allocated memory was 191.9MB in the beginning and 237.0MB in the end (delta: 45.1MB). Free memory was 137.7MB in the beginning and 193.6MB in the end (delta: -55.9MB). Peak memory consumption was 7.5MB. Max. memory is 8.0GB. * Boogie Preprocessor took 74.15ms. Allocated memory is still 237.0MB. Free memory was 193.6MB in the beginning and 188.3MB in the end (delta: 5.2MB). Peak memory consumption was 5.2MB. Max. memory is 8.0GB. * RCFGBuilder took 1019.67ms. Allocated memory is still 237.0MB. Free memory was 188.3MB in the beginning and 180.0MB in the end (delta: 8.3MB). Peak memory consumption was 46.4MB. Max. memory is 8.0GB. * IcfgTransformer took 67.07ms. Allocated memory is still 237.0MB. Free memory was 180.0MB in the beginning and 172.2MB in the end (delta: 7.9MB). Peak memory consumption was 7.3MB. Max. memory is 8.0GB. * TraceAbstraction took 110569.01ms. Allocated memory was 237.0MB in the beginning and 576.7MB in the end (delta: 339.7MB). Free memory was 171.6MB in the beginning and 295.1MB in the end (delta: -123.5MB). Peak memory consumption was 216.3MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 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=3221225659, 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=3221225659, 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=3221225659, 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=3221225659, 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=3221225659, 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=3221225659, 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: 110.5s, OverallIterations: 67, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 96.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 72103 SdHoareTripleChecker+Valid, 86.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 71684 mSDsluCounter, 116962 SdHoareTripleChecker+Invalid, 73.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 78126 mSDsCounter, 25197 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 186518 IncrementalHoareTripleChecker+Invalid, 211715 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 25197 mSolverCounterUnsat, 38836 mSDtfsCounter, 186518 mSolverCounterSat, 0.7s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1748 GetRequests, 647 SyntacticMatches, 14 SemanticMatches, 1087 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2756 ImplicationChecksByTransitivity, 14.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1067occurred in iteration=64, InterpolantAutomatonStates: 893, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.1s AutomataMinimizationTime, 66 MinimizatonAttempts, 8496 StatesRemovedByMinimization, 66 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 11.3s InterpolantComputationTime, 3939 NumberOfCodeBlocks, 3939 NumberOfCodeBlocksAsserted, 67 NumberOfCheckSat, 3800 ConstructedInterpolants, 0 QuantifiedInterpolants, 20068 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! [2022-03-20 07:27:36,834 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...