/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-05ce600 [2022-02-23 19:52:22,685 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-23 19:52:22,688 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-23 19:52:22,730 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-02-23 19:52:22,731 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-02-23 19:52:22,733 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-02-23 19:52:22,736 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-02-23 19:52:22,739 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-02-23 19:52:22,740 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-02-23 19:52:22,745 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-02-23 19:52:22,746 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-02-23 19:52:22,747 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-02-23 19:52:22,747 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-02-23 19:52:22,749 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-02-23 19:52:22,750 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-02-23 19:52:22,753 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-02-23 19:52:22,753 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-02-23 19:52:22,754 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-02-23 19:52:22,756 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-02-23 19:52:22,761 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-02-23 19:52:22,762 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-02-23 19:52:22,763 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-02-23 19:52:22,764 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-02-23 19:52:22,765 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-02-23 19:52:22,771 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-02-23 19:52:22,771 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-02-23 19:52:22,771 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-02-23 19:52:22,773 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-02-23 19:52:22,773 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-02-23 19:52:22,774 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-02-23 19:52:22,774 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-02-23 19:52:22,774 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-02-23 19:52:22,776 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-02-23 19:52:22,776 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-02-23 19:52:22,778 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-02-23 19:52:22,778 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-02-23 19:52:22,778 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-02-23 19:52:22,778 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-02-23 19:52:22,779 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-23 19:52:22,779 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-23 19:52:22,780 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-23 19:52:22,780 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2022-02-23 19:52:22,792 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-23 19:52:22,793 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-23 19:52:22,794 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-23 19:52:22,794 INFO L138 SettingsManager]: * sizeof long=4 [2022-02-23 19:52:22,794 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-23 19:52:22,794 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-02-23 19:52:22,795 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-23 19:52:22,795 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-23 19:52:22,795 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-23 19:52:22,795 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-23 19:52:22,796 INFO L138 SettingsManager]: * sizeof long double=12 [2022-02-23 19:52:22,796 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-23 19:52:22,796 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-23 19:52:22,796 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-23 19:52:22,796 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-23 19:52:22,796 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-23 19:52:22,796 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-02-23 19:52:22,797 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-23 19:52:22,797 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-23 19:52:22,797 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-23 19:52:22,797 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-02-23 19:52:22,798 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-02-23 19:52:22,798 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-02-23 19:52:23,028 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-23 19:52:23,047 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-23 19:52:23,049 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-23 19:52:23,050 INFO L271 PluginConnector]: Initializing CDTParser... [2022-02-23 19:52:23,051 INFO L275 PluginConnector]: CDTParser initialized [2022-02-23 19:52:23,052 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ntdrivers-simplified/cdaudio_simpl1.cil-1.c [2022-02-23 19:52:23,114 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8807b9f99/c6c1c68522704389b33fc5ca836c9e60/FLAGffad9c67b [2022-02-23 19:52:23,589 INFO L306 CDTParser]: Found 1 translation units. [2022-02-23 19:52:23,590 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ntdrivers-simplified/cdaudio_simpl1.cil-1.c [2022-02-23 19:52:23,606 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8807b9f99/c6c1c68522704389b33fc5ca836c9e60/FLAGffad9c67b [2022-02-23 19:52:23,623 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8807b9f99/c6c1c68522704389b33fc5ca836c9e60 [2022-02-23 19:52:23,625 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-23 19:52:23,626 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-02-23 19:52:23,632 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-02-23 19:52:23,632 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-02-23 19:52:23,635 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-02-23 19:52:23,635 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 07:52:23" (1/1) ... [2022-02-23 19:52:23,636 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@781e8e50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 07:52:23, skipping insertion in model container [2022-02-23 19:52:23,636 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 07:52:23" (1/1) ... [2022-02-23 19:52:23,642 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-02-23 19:52:23,719 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-02-23 19:52:23,875 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ntdrivers-simplified/cdaudio_simpl1.cil-1.c[2074,2087] [2022-02-23 19:52:24,046 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-23 19:52:24,053 INFO L203 MainTranslator]: Completed pre-run [2022-02-23 19:52:24,064 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ntdrivers-simplified/cdaudio_simpl1.cil-1.c[2074,2087] [2022-02-23 19:52:24,185 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-23 19:52:24,197 INFO L208 MainTranslator]: Completed translation [2022-02-23 19:52:24,198 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 07:52:24 WrapperNode [2022-02-23 19:52:24,198 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-02-23 19:52:24,199 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-23 19:52:24,199 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-23 19:52:24,199 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-23 19:52:24,207 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 07:52:24" (1/1) ... [2022-02-23 19:52:24,207 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 07:52:24" (1/1) ... [2022-02-23 19:52:24,225 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 07:52:24" (1/1) ... [2022-02-23 19:52:24,226 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 07:52:24" (1/1) ... [2022-02-23 19:52:24,277 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 07:52:24" (1/1) ... [2022-02-23 19:52:24,289 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 07:52:24" (1/1) ... [2022-02-23 19:52:24,294 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 07:52:24" (1/1) ... [2022-02-23 19:52:24,303 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-23 19:52:24,304 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-23 19:52:24,304 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-23 19:52:24,304 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-23 19:52:24,324 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 07:52:24" (1/1) ... [2022-02-23 19:52:24,330 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-23 19:52:24,340 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-23 19:52:24,364 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-02-23 19:52:24,373 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-02-23 19:52:24,405 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-02-23 19:52:24,405 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-23 19:52:24,406 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-02-23 19:52:24,406 INFO L138 BoogieDeclarations]: Found implementation of procedure errorFn [2022-02-23 19:52:24,406 INFO L138 BoogieDeclarations]: Found implementation of procedure _BLAST_init [2022-02-23 19:52:24,406 INFO L138 BoogieDeclarations]: Found implementation of procedure SendSrbSynchronous [2022-02-23 19:52:24,407 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioSignalCompletion [2022-02-23 19:52:24,407 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioStartDevice [2022-02-23 19:52:24,407 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioPnp [2022-02-23 19:52:24,407 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioDeviceControl [2022-02-23 19:52:24,407 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioSendToNextDriver [2022-02-23 19:52:24,407 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioIsPlayActive [2022-02-23 19:52:24,408 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudio535DeviceControl [2022-02-23 19:52:24,408 INFO L138 BoogieDeclarations]: Found implementation of procedure AG_SetStatusAndReturn [2022-02-23 19:52:24,408 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudio435DeviceControl [2022-02-23 19:52:24,409 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioAtapiDeviceControl [2022-02-23 19:52:24,410 INFO L138 BoogieDeclarations]: Found implementation of procedure HpCdrProcessLastSession [2022-02-23 19:52:24,410 INFO L138 BoogieDeclarations]: Found implementation of procedure HPCdrCompletion [2022-02-23 19:52:24,411 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioHPCdrDeviceControl [2022-02-23 19:52:24,411 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioForwardIrpSynchronous [2022-02-23 19:52:24,411 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioUnload [2022-02-23 19:52:24,411 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioPower [2022-02-23 19:52:24,411 INFO L138 BoogieDeclarations]: Found implementation of procedure stub_driver_init [2022-02-23 19:52:24,411 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-02-23 19:52:24,411 INFO L138 BoogieDeclarations]: Found implementation of procedure stubMoreProcessingRequired [2022-02-23 19:52:24,411 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCallDriver [2022-02-23 19:52:24,411 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCompleteRequest [2022-02-23 19:52:24,411 INFO L138 BoogieDeclarations]: Found implementation of procedure KeSetEvent [2022-02-23 19:52:24,411 INFO L138 BoogieDeclarations]: Found implementation of procedure KeWaitForSingleObject [2022-02-23 19:52:24,412 INFO L138 BoogieDeclarations]: Found implementation of procedure PoCallDriver [2022-02-23 19:52:24,412 INFO L138 BoogieDeclarations]: Found implementation of procedure ZwClose [2022-02-23 19:52:24,412 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-02-23 19:52:24,412 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-02-23 19:52:24,412 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-02-23 19:52:24,412 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-02-23 19:52:24,412 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2022-02-23 19:52:24,412 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-02-23 19:52:24,412 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2022-02-23 19:52:24,413 INFO L130 BoogieDeclarations]: Found specification of procedure SendSrbSynchronous [2022-02-23 19:52:24,413 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioSignalCompletion [2022-02-23 19:52:24,413 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioStartDevice [2022-02-23 19:52:24,413 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioPnp [2022-02-23 19:52:24,413 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioDeviceControl [2022-02-23 19:52:24,413 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioSendToNextDriver [2022-02-23 19:52:24,413 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioIsPlayActive [2022-02-23 19:52:24,413 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudio535DeviceControl [2022-02-23 19:52:24,413 INFO L130 BoogieDeclarations]: Found specification of procedure AG_SetStatusAndReturn [2022-02-23 19:52:24,413 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudio435DeviceControl [2022-02-23 19:52:24,414 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioAtapiDeviceControl [2022-02-23 19:52:24,414 INFO L130 BoogieDeclarations]: Found specification of procedure HPCdrCompletion [2022-02-23 19:52:24,414 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioHPCdrDeviceControl [2022-02-23 19:52:24,414 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioForwardIrpSynchronous [2022-02-23 19:52:24,414 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioPower [2022-02-23 19:52:24,414 INFO L130 BoogieDeclarations]: Found specification of procedure IofCallDriver [2022-02-23 19:52:24,414 INFO L130 BoogieDeclarations]: Found specification of procedure KeSetEvent [2022-02-23 19:52:24,414 INFO L130 BoogieDeclarations]: Found specification of procedure KeWaitForSingleObject [2022-02-23 19:52:24,414 INFO L130 BoogieDeclarations]: Found specification of procedure PoCallDriver [2022-02-23 19:52:24,414 INFO L130 BoogieDeclarations]: Found specification of procedure ZwClose [2022-02-23 19:52:24,414 INFO L130 BoogieDeclarations]: Found specification of procedure IofCompleteRequest [2022-02-23 19:52:24,415 INFO L130 BoogieDeclarations]: Found specification of procedure errorFn [2022-02-23 19:52:24,415 INFO L130 BoogieDeclarations]: Found specification of procedure _BLAST_init [2022-02-23 19:52:24,415 INFO L130 BoogieDeclarations]: Found specification of procedure HpCdrProcessLastSession [2022-02-23 19:52:24,415 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioUnload [2022-02-23 19:52:24,415 INFO L130 BoogieDeclarations]: Found specification of procedure stub_driver_init [2022-02-23 19:52:24,415 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-02-23 19:52:24,416 INFO L130 BoogieDeclarations]: Found specification of procedure stubMoreProcessingRequired [2022-02-23 19:52:24,416 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-02-23 19:52:24,416 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-02-23 19:52:24,416 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-23 19:52:24,416 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-02-23 19:52:24,416 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-02-23 19:52:24,416 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-02-23 19:52:24,652 INFO L234 CfgBuilder]: Building ICFG [2022-02-23 19:52:24,654 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-23 19:52:24,805 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-23 19:52:24,912 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume !false; [2022-02-23 19:52:24,912 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##14: assume false; [2022-02-23 19:52:24,916 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-23 19:52:24,959 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##18: assume !false; [2022-02-23 19:52:24,960 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##17: assume false; [2022-02-23 19:52:24,985 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-23 19:52:24,996 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##16: assume !false; [2022-02-23 19:52:24,996 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume false; [2022-02-23 19:52:25,063 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-23 19:52:25,097 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##6: assume !false; [2022-02-23 19:52:25,097 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L305: #res := 0; [2022-02-23 19:52:25,097 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##5: assume false; [2022-02-23 19:52:25,105 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-23 19:52:25,265 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##21: assume false; [2022-02-23 19:52:25,265 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##22: assume !false; [2022-02-23 19:52:25,266 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-23 19:52:25,287 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##21: assume !false; [2022-02-23 19:52:25,288 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##20: assume false; [2022-02-23 19:52:25,315 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-23 19:52:25,333 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##10: assume !false; [2022-02-23 19:52:25,333 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##9: assume false; [2022-02-23 19:52:25,336 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-23 19:52:25,455 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##26: assume !false; [2022-02-23 19:52:25,455 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##25: assume false; [2022-02-23 19:52:25,463 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-23 19:52:25,467 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-02-23 19:52:25,467 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-02-23 19:52:25,478 INFO L275 CfgBuilder]: Performing block encoding [2022-02-23 19:52:25,488 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-23 19:52:25,488 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-02-23 19:52:25,490 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 07:52:25 BoogieIcfgContainer [2022-02-23 19:52:25,491 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-23 19:52:25,491 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-02-23 19:52:25,491 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-02-23 19:52:25,492 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-02-23 19:52:25,495 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 07:52:25" (1/1) ... [2022-02-23 19:52:25,563 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 23.02 07:52:25 BasicIcfg [2022-02-23 19:52:25,563 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-02-23 19:52:25,564 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-23 19:52:25,564 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-23 19:52:25,567 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-23 19:52:25,567 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 07:52:23" (1/4) ... [2022-02-23 19:52:25,567 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23fc86b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 07:52:25, skipping insertion in model container [2022-02-23 19:52:25,568 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 07:52:24" (2/4) ... [2022-02-23 19:52:25,568 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23fc86b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 07:52:25, skipping insertion in model container [2022-02-23 19:52:25,568 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 07:52:25" (3/4) ... [2022-02-23 19:52:25,568 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23fc86b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 07:52:25, skipping insertion in model container [2022-02-23 19:52:25,568 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 23.02 07:52:25" (4/4) ... [2022-02-23 19:52:25,571 INFO L111 eAbstractionObserver]: Analyzing ICFG cdaudio_simpl1.cil-1.cJordan [2022-02-23 19:52:25,578 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2022-02-23 19:52:25,579 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-23 19:52:25,616 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-23 19:52:25,621 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2022-02-23 19:52:25,621 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-02-23 19:52:25,641 INFO L276 IsEmpty]: Start isEmpty. Operand has 517 states, 383 states have (on average 1.4882506527415145) internal successors, (570), 404 states have internal predecessors, (570), 103 states have call successors, (103), 29 states have call predecessors, (103), 29 states have return successors, (103), 98 states have call predecessors, (103), 103 states have call successors, (103) [2022-02-23 19:52:25,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-02-23 19:52:25,649 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 19:52:25,649 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 19:52:25,650 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 19:52:25,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 19:52:25,655 INFO L85 PathProgramCache]: Analyzing trace with hash 784814983, now seen corresponding path program 1 times [2022-02-23 19:52:25,662 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 19:52:25,663 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411702712] [2022-02-23 19:52:25,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 19:52:25,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 19:52:25,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:52:25,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-23 19:52:25,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:52:26,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-23 19:52:26,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:52:26,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-23 19:52:26,052 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 19:52:26,052 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411702712] [2022-02-23 19:52:26,052 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [411702712] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-23 19:52:26,053 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-23 19:52:26,053 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-02-23 19:52:26,054 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627069093] [2022-02-23 19:52:26,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-23 19:52:26,058 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-23 19:52:26,058 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 19:52:26,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-23 19:52:26,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-02-23 19:52:26,094 INFO L87 Difference]: Start difference. First operand has 517 states, 383 states have (on average 1.4882506527415145) internal successors, (570), 404 states have internal predecessors, (570), 103 states have call successors, (103), 29 states have call predecessors, (103), 29 states have return successors, (103), 98 states have call predecessors, (103), 103 states have call successors, (103) Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 3 states have internal predecessors, (14), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-02-23 19:52:28,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 19:52:28,416 INFO L93 Difference]: Finished difference Result 681 states and 1043 transitions. [2022-02-23 19:52:28,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-02-23 19:52:28,418 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 3 states have internal predecessors, (14), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 20 [2022-02-23 19:52:28,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 19:52:28,432 INFO L225 Difference]: With dead ends: 681 [2022-02-23 19:52:28,433 INFO L226 Difference]: Without dead ends: 665 [2022-02-23 19:52:28,434 INFO L932 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 [2022-02-23 19:52:28,437 INFO L933 BasicCegarLoop]: 741 mSDtfsCounter, 399 mSDsluCounter, 272 mSDsCounter, 0 mSdLazyCounter, 1595 mSolverCounterSat, 158 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 400 SdHoareTripleChecker+Valid, 1013 SdHoareTripleChecker+Invalid, 1753 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 158 IncrementalHoareTripleChecker+Valid, 1595 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-02-23 19:52:28,438 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [400 Valid, 1013 Invalid, 1753 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [158 Valid, 1595 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-02-23 19:52:28,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 665 states. [2022-02-23 19:52:28,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 665 to 509. [2022-02-23 19:52:28,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 509 states, 378 states have (on average 1.4576719576719577) internal successors, (551), 397 states have internal predecessors, (551), 103 states have call successors, (103), 29 states have call predecessors, (103), 27 states have return successors, (86), 86 states have call predecessors, (86), 86 states have call successors, (86) [2022-02-23 19:52:28,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 509 states to 509 states and 740 transitions. [2022-02-23 19:52:28,515 INFO L78 Accepts]: Start accepts. Automaton has 509 states and 740 transitions. Word has length 20 [2022-02-23 19:52:28,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 19:52:28,515 INFO L470 AbstractCegarLoop]: Abstraction has 509 states and 740 transitions. [2022-02-23 19:52:28,515 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 3 states have internal predecessors, (14), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-02-23 19:52:28,515 INFO L276 IsEmpty]: Start isEmpty. Operand 509 states and 740 transitions. [2022-02-23 19:52:28,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-02-23 19:52:28,516 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 19:52:28,516 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 19:52:28,517 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-23 19:52:28,517 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 19:52:28,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 19:52:28,517 INFO L85 PathProgramCache]: Analyzing trace with hash -30338372, now seen corresponding path program 1 times [2022-02-23 19:52:28,517 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 19:52:28,518 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413640060] [2022-02-23 19:52:28,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 19:52:28,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 19:52:28,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:52:28,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-23 19:52:28,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:52:28,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-23 19:52:28,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:52:28,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-23 19:52:28,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:52:28,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-23 19:52:28,673 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 19:52:28,674 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413640060] [2022-02-23 19:52:28,674 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413640060] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-23 19:52:28,674 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-23 19:52:28,674 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-02-23 19:52:28,674 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228293927] [2022-02-23 19:52:28,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-23 19:52:28,675 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-02-23 19:52:28,675 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 19:52:28,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-02-23 19:52:28,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-02-23 19:52:28,676 INFO L87 Difference]: Start difference. First operand 509 states and 740 transitions. Second operand has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 3 states have internal predecessors, (16), 3 states have call successors, (6), 6 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-02-23 19:52:30,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 19:52:30,332 INFO L93 Difference]: Finished difference Result 847 states and 1261 transitions. [2022-02-23 19:52:30,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-02-23 19:52:30,333 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 3 states have internal predecessors, (16), 3 states have call successors, (6), 6 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 25 [2022-02-23 19:52:30,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 19:52:30,339 INFO L225 Difference]: With dead ends: 847 [2022-02-23 19:52:30,339 INFO L226 Difference]: Without dead ends: 846 [2022-02-23 19:52:30,340 INFO L932 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 [2022-02-23 19:52:30,341 INFO L933 BasicCegarLoop]: 841 mSDtfsCounter, 1498 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 917 mSolverCounterSat, 430 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1502 SdHoareTripleChecker+Valid, 1013 SdHoareTripleChecker+Invalid, 1347 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 430 IncrementalHoareTripleChecker+Valid, 917 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-02-23 19:52:30,341 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1502 Valid, 1013 Invalid, 1347 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [430 Valid, 917 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-02-23 19:52:30,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 846 states. [2022-02-23 19:52:30,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 846 to 664. [2022-02-23 19:52:30,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 664 states, 502 states have (on average 1.408366533864542) internal successors, (707), 510 states have internal predecessors, (707), 112 states have call successors, (112), 40 states have call predecessors, (112), 49 states have return successors, (145), 119 states have call predecessors, (145), 99 states have call successors, (145) [2022-02-23 19:52:30,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 664 states to 664 states and 964 transitions. [2022-02-23 19:52:30,384 INFO L78 Accepts]: Start accepts. Automaton has 664 states and 964 transitions. Word has length 25 [2022-02-23 19:52:30,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 19:52:30,385 INFO L470 AbstractCegarLoop]: Abstraction has 664 states and 964 transitions. [2022-02-23 19:52:30,385 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 3 states have internal predecessors, (16), 3 states have call successors, (6), 6 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-02-23 19:52:30,385 INFO L276 IsEmpty]: Start isEmpty. Operand 664 states and 964 transitions. [2022-02-23 19:52:30,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-02-23 19:52:30,387 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 19:52:30,387 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 19:52:30,387 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-02-23 19:52:30,387 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 19:52:30,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 19:52:30,388 INFO L85 PathProgramCache]: Analyzing trace with hash -759392990, now seen corresponding path program 1 times [2022-02-23 19:52:30,388 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 19:52:30,388 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115993707] [2022-02-23 19:52:30,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 19:52:30,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 19:52:30,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:52:30,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-23 19:52:30,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:52:30,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-23 19:52:30,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:52:30,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-23 19:52:30,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:52:30,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-23 19:52:30,570 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 19:52:30,570 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115993707] [2022-02-23 19:52:30,570 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [115993707] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-23 19:52:30,571 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-23 19:52:30,571 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-02-23 19:52:30,571 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830969539] [2022-02-23 19:52:30,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-23 19:52:30,571 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-02-23 19:52:30,571 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 19:52:30,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-02-23 19:52:30,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-02-23 19:52:30,572 INFO L87 Difference]: Start difference. First operand 664 states and 964 transitions. Second operand has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 3 states have internal predecessors, (19), 3 states have call successors, (8), 6 states have call predecessors, (8), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-02-23 19:52:32,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 19:52:32,562 INFO L93 Difference]: Finished difference Result 970 states and 1415 transitions. [2022-02-23 19:52:32,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-02-23 19:52:32,562 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 3 states have internal predecessors, (19), 3 states have call successors, (8), 6 states have call predecessors, (8), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 30 [2022-02-23 19:52:32,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 19:52:32,567 INFO L225 Difference]: With dead ends: 970 [2022-02-23 19:52:32,567 INFO L226 Difference]: Without dead ends: 970 [2022-02-23 19:52:32,568 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-02-23 19:52:32,569 INFO L933 BasicCegarLoop]: 725 mSDtfsCounter, 1121 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 1647 mSolverCounterSat, 250 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1131 SdHoareTripleChecker+Valid, 886 SdHoareTripleChecker+Invalid, 1897 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 250 IncrementalHoareTripleChecker+Valid, 1647 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-02-23 19:52:32,569 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1131 Valid, 886 Invalid, 1897 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [250 Valid, 1647 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-02-23 19:52:32,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 970 states. [2022-02-23 19:52:32,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 970 to 789. [2022-02-23 19:52:32,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 789 states, 611 states have (on average 1.4042553191489362) internal successors, (858), 615 states have internal predecessors, (858), 114 states have call successors, (114), 46 states have call predecessors, (114), 63 states have return successors, (163), 130 states have call predecessors, (163), 104 states have call successors, (163) [2022-02-23 19:52:32,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 789 states to 789 states and 1135 transitions. [2022-02-23 19:52:32,602 INFO L78 Accepts]: Start accepts. Automaton has 789 states and 1135 transitions. Word has length 30 [2022-02-23 19:52:32,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 19:52:32,602 INFO L470 AbstractCegarLoop]: Abstraction has 789 states and 1135 transitions. [2022-02-23 19:52:32,602 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 3 states have internal predecessors, (19), 3 states have call successors, (8), 6 states have call predecessors, (8), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-02-23 19:52:32,603 INFO L276 IsEmpty]: Start isEmpty. Operand 789 states and 1135 transitions. [2022-02-23 19:52:32,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-02-23 19:52:32,604 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 19:52:32,605 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 19:52:32,605 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-02-23 19:52:32,605 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 19:52:32,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 19:52:32,605 INFO L85 PathProgramCache]: Analyzing trace with hash 1280175921, now seen corresponding path program 1 times [2022-02-23 19:52:32,605 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 19:52:32,606 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516348601] [2022-02-23 19:52:32,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 19:52:32,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 19:52:32,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:52:32,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-23 19:52:32,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:52:32,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-23 19:52:32,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:52:32,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-23 19:52:32,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:52:32,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-23 19:52:32,725 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 19:52:32,725 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516348601] [2022-02-23 19:52:32,727 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [516348601] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-23 19:52:32,727 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-23 19:52:32,728 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-02-23 19:52:32,728 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660781511] [2022-02-23 19:52:32,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-23 19:52:32,729 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-02-23 19:52:32,729 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 19:52:32,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-02-23 19:52:32,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-02-23 19:52:32,730 INFO L87 Difference]: Start difference. First operand 789 states and 1135 transitions. Second operand has 6 states, 6 states have (on average 3.5) internal successors, (21), 3 states have internal predecessors, (21), 2 states have call successors, (7), 5 states have call predecessors, (7), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-02-23 19:52:34,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 19:52:34,780 INFO L93 Difference]: Finished difference Result 1344 states and 2031 transitions. [2022-02-23 19:52:34,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-02-23 19:52:34,780 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 3 states have internal predecessors, (21), 2 states have call successors, (7), 5 states have call predecessors, (7), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 31 [2022-02-23 19:52:34,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 19:52:34,787 INFO L225 Difference]: With dead ends: 1344 [2022-02-23 19:52:34,787 INFO L226 Difference]: Without dead ends: 1344 [2022-02-23 19:52:34,788 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-02-23 19:52:34,790 INFO L933 BasicCegarLoop]: 1006 mSDtfsCounter, 1482 mSDsluCounter, 256 mSDsCounter, 0 mSdLazyCounter, 1324 mSolverCounterSat, 529 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1485 SdHoareTripleChecker+Valid, 1262 SdHoareTripleChecker+Invalid, 1853 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 529 IncrementalHoareTripleChecker+Valid, 1324 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-02-23 19:52:34,790 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1485 Valid, 1262 Invalid, 1853 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [529 Valid, 1324 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-02-23 19:52:34,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1344 states. [2022-02-23 19:52:34,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1344 to 907. [2022-02-23 19:52:34,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 907 states, 708 states have (on average 1.4138418079096045) internal successors, (1001), 711 states have internal predecessors, (1001), 127 states have call successors, (127), 54 states have call predecessors, (127), 71 states have return successors, (220), 144 states have call predecessors, (220), 117 states have call successors, (220) [2022-02-23 19:52:34,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 907 states to 907 states and 1348 transitions. [2022-02-23 19:52:34,849 INFO L78 Accepts]: Start accepts. Automaton has 907 states and 1348 transitions. Word has length 31 [2022-02-23 19:52:34,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 19:52:34,849 INFO L470 AbstractCegarLoop]: Abstraction has 907 states and 1348 transitions. [2022-02-23 19:52:34,850 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 3 states have internal predecessors, (21), 2 states have call successors, (7), 5 states have call predecessors, (7), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-02-23 19:52:34,850 INFO L276 IsEmpty]: Start isEmpty. Operand 907 states and 1348 transitions. [2022-02-23 19:52:34,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-02-23 19:52:34,855 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 19:52:34,855 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 19:52:34,855 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-02-23 19:52:34,855 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 19:52:34,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 19:52:34,856 INFO L85 PathProgramCache]: Analyzing trace with hash 998226604, now seen corresponding path program 1 times [2022-02-23 19:52:34,856 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 19:52:34,856 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209008070] [2022-02-23 19:52:34,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 19:52:34,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 19:52:34,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:52:34,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-23 19:52:34,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:52:35,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-23 19:52:35,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:52:35,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-23 19:52:35,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:52:35,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-23 19:52:35,064 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 19:52:35,064 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209008070] [2022-02-23 19:52:35,064 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [209008070] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-23 19:52:35,064 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-23 19:52:35,064 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-02-23 19:52:35,065 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997551966] [2022-02-23 19:52:35,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-23 19:52:35,065 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-02-23 19:52:35,065 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 19:52:35,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-02-23 19:52:35,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-02-23 19:52:35,066 INFO L87 Difference]: Start difference. First operand 907 states and 1348 transitions. Second operand has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 6 states have internal predecessors, (22), 4 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-02-23 19:52:36,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 19:52:36,999 INFO L93 Difference]: Finished difference Result 1046 states and 1583 transitions. [2022-02-23 19:52:37,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-02-23 19:52:37,000 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 6 states have internal predecessors, (22), 4 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 32 [2022-02-23 19:52:37,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 19:52:37,005 INFO L225 Difference]: With dead ends: 1046 [2022-02-23 19:52:37,005 INFO L226 Difference]: Without dead ends: 1046 [2022-02-23 19:52:37,005 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2022-02-23 19:52:37,009 INFO L933 BasicCegarLoop]: 738 mSDtfsCounter, 3738 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 904 mSolverCounterSat, 1339 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3744 SdHoareTripleChecker+Valid, 885 SdHoareTripleChecker+Invalid, 2243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1339 IncrementalHoareTripleChecker+Valid, 904 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-02-23 19:52:37,010 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3744 Valid, 885 Invalid, 2243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1339 Valid, 904 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-02-23 19:52:37,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1046 states. [2022-02-23 19:52:37,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1046 to 835. [2022-02-23 19:52:37,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 835 states, 649 states have (on average 1.399075500770416) internal successors, (908), 653 states have internal predecessors, (908), 118 states have call successors, (118), 50 states have call predecessors, (118), 67 states have return successors, (177), 134 states have call predecessors, (177), 108 states have call successors, (177) [2022-02-23 19:52:37,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 835 states to 835 states and 1203 transitions. [2022-02-23 19:52:37,042 INFO L78 Accepts]: Start accepts. Automaton has 835 states and 1203 transitions. Word has length 32 [2022-02-23 19:52:37,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 19:52:37,044 INFO L470 AbstractCegarLoop]: Abstraction has 835 states and 1203 transitions. [2022-02-23 19:52:37,044 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 6 states have internal predecessors, (22), 4 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-02-23 19:52:37,044 INFO L276 IsEmpty]: Start isEmpty. Operand 835 states and 1203 transitions. [2022-02-23 19:52:37,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-02-23 19:52:37,046 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 19:52:37,046 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 19:52:37,046 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-02-23 19:52:37,047 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 19:52:37,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 19:52:37,047 INFO L85 PathProgramCache]: Analyzing trace with hash 936943045, now seen corresponding path program 1 times [2022-02-23 19:52:37,047 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 19:52:37,047 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356244892] [2022-02-23 19:52:37,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 19:52:37,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 19:52:37,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:52:37,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-23 19:52:37,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:52:37,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-23 19:52:37,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:52:37,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-23 19:52:37,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:52:37,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-23 19:52:37,191 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 19:52:37,194 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356244892] [2022-02-23 19:52:37,194 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1356244892] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-23 19:52:37,195 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-23 19:52:37,195 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-02-23 19:52:37,195 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209194104] [2022-02-23 19:52:37,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-23 19:52:37,196 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-02-23 19:52:37,196 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 19:52:37,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-02-23 19:52:37,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-02-23 19:52:37,197 INFO L87 Difference]: Start difference. First operand 835 states and 1203 transitions. Second operand has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 3 states have internal predecessors, (25), 3 states have call successors, (8), 6 states have call predecessors, (8), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-02-23 19:52:38,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 19:52:38,765 INFO L93 Difference]: Finished difference Result 961 states and 1420 transitions. [2022-02-23 19:52:38,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-02-23 19:52:38,765 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 3 states have internal predecessors, (25), 3 states have call successors, (8), 6 states have call predecessors, (8), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 36 [2022-02-23 19:52:38,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 19:52:38,770 INFO L225 Difference]: With dead ends: 961 [2022-02-23 19:52:38,770 INFO L226 Difference]: Without dead ends: 961 [2022-02-23 19:52:38,770 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-02-23 19:52:38,773 INFO L933 BasicCegarLoop]: 713 mSDtfsCounter, 422 mSDsluCounter, 247 mSDsCounter, 0 mSdLazyCounter, 1466 mSolverCounterSat, 143 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s 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, 1.5s IncrementalHoareTripleChecker+Time [2022-02-23 19:52:38,775 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [423 Valid, 960 Invalid, 1609 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [143 Valid, 1466 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-02-23 19:52:38,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 961 states. [2022-02-23 19:52:38,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 961 to 834. [2022-02-23 19:52:38,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 834 states, 649 states have (on average 1.3959938366718028) internal successors, (906), 652 states have internal predecessors, (906), 117 states have call successors, (117), 50 states have call predecessors, (117), 67 states have return successors, (177), 134 states have call predecessors, (177), 108 states have call successors, (177) [2022-02-23 19:52:38,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 834 states to 834 states and 1200 transitions. [2022-02-23 19:52:38,797 INFO L78 Accepts]: Start accepts. Automaton has 834 states and 1200 transitions. Word has length 36 [2022-02-23 19:52:38,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 19:52:38,797 INFO L470 AbstractCegarLoop]: Abstraction has 834 states and 1200 transitions. [2022-02-23 19:52:38,798 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 3 states have internal predecessors, (25), 3 states have call successors, (8), 6 states have call predecessors, (8), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-02-23 19:52:38,798 INFO L276 IsEmpty]: Start isEmpty. Operand 834 states and 1200 transitions. [2022-02-23 19:52:38,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-02-23 19:52:38,800 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 19:52:38,800 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 19:52:38,800 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-02-23 19:52:38,801 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 19:52:38,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 19:52:38,801 INFO L85 PathProgramCache]: Analyzing trace with hash -1670644950, now seen corresponding path program 1 times [2022-02-23 19:52:38,801 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 19:52:38,801 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356895308] [2022-02-23 19:52:38,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 19:52:38,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 19:52:38,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:52:38,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-23 19:52:38,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:52:38,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-23 19:52:38,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:52:38,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-23 19:52:38,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:52:38,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-23 19:52:38,968 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 19:52:38,968 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356895308] [2022-02-23 19:52:38,968 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [356895308] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-23 19:52:38,968 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-23 19:52:38,968 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-02-23 19:52:38,968 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27420888] [2022-02-23 19:52:38,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-23 19:52:38,971 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-02-23 19:52:38,971 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 19:52:38,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-02-23 19:52:38,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-02-23 19:52:38,972 INFO L87 Difference]: Start difference. First operand 834 states and 1200 transitions. Second operand has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 4 states have internal predecessors, (26), 3 states have call successors, (10), 6 states have call predecessors, (10), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-02-23 19:52:40,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 19:52:40,888 INFO L93 Difference]: Finished difference Result 999 states and 1436 transitions. [2022-02-23 19:52:40,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-02-23 19:52:40,891 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 4 states have internal predecessors, (26), 3 states have call successors, (10), 6 states have call predecessors, (10), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 39 [2022-02-23 19:52:40,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 19:52:40,896 INFO L225 Difference]: With dead ends: 999 [2022-02-23 19:52:40,896 INFO L226 Difference]: Without dead ends: 999 [2022-02-23 19:52:40,896 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-02-23 19:52:40,897 INFO L933 BasicCegarLoop]: 821 mSDtfsCounter, 1114 mSDsluCounter, 467 mSDsCounter, 0 mSdLazyCounter, 2126 mSolverCounterSat, 382 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s 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, 1.7s IncrementalHoareTripleChecker+Time [2022-02-23 19:52:40,897 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1116 Valid, 1288 Invalid, 2508 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [382 Valid, 2126 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-02-23 19:52:40,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 999 states. [2022-02-23 19:52:40,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 999 to 736. [2022-02-23 19:52:40,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 736 states, 571 states have (on average 1.3870402802101576) internal successors, (792), 575 states have internal predecessors, (792), 106 states have call successors, (106), 45 states have call predecessors, (106), 58 states have return successors, (131), 118 states have call predecessors, (131), 97 states have call successors, (131) [2022-02-23 19:52:40,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 736 states to 736 states and 1029 transitions. [2022-02-23 19:52:40,917 INFO L78 Accepts]: Start accepts. Automaton has 736 states and 1029 transitions. Word has length 39 [2022-02-23 19:52:40,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 19:52:40,917 INFO L470 AbstractCegarLoop]: Abstraction has 736 states and 1029 transitions. [2022-02-23 19:52:40,917 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 4 states have internal predecessors, (26), 3 states have call successors, (10), 6 states have call predecessors, (10), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-02-23 19:52:40,917 INFO L276 IsEmpty]: Start isEmpty. Operand 736 states and 1029 transitions. [2022-02-23 19:52:40,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-02-23 19:52:40,919 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 19:52:40,919 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 19:52:40,919 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-02-23 19:52:40,919 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 19:52:40,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 19:52:40,919 INFO L85 PathProgramCache]: Analyzing trace with hash -1528829481, now seen corresponding path program 1 times [2022-02-23 19:52:40,920 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 19:52:40,920 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100514924] [2022-02-23 19:52:40,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 19:52:40,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 19:52:40,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:52:41,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-23 19:52:41,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:52:41,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-23 19:52:41,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:52:41,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-23 19:52:41,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:52:41,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-23 19:52:41,072 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 19:52:41,072 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100514924] [2022-02-23 19:52:41,072 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1100514924] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-23 19:52:41,072 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-23 19:52:41,072 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-02-23 19:52:41,072 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469103398] [2022-02-23 19:52:41,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-23 19:52:41,073 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-02-23 19:52:41,073 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 19:52:41,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-02-23 19:52:41,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-02-23 19:52:41,073 INFO L87 Difference]: Start difference. First operand 736 states and 1029 transitions. Second operand has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 3 states have internal predecessors, (28), 3 states have call successors, (9), 6 states have call predecessors, (9), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-02-23 19:52:42,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 19:52:42,165 INFO L93 Difference]: Finished difference Result 959 states and 1380 transitions. [2022-02-23 19:52:42,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-02-23 19:52:42,166 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 3 states have internal predecessors, (28), 3 states have call successors, (9), 6 states have call predecessors, (9), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 40 [2022-02-23 19:52:42,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 19:52:42,169 INFO L225 Difference]: With dead ends: 959 [2022-02-23 19:52:42,169 INFO L226 Difference]: Without dead ends: 959 [2022-02-23 19:52:42,170 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-02-23 19:52:42,170 INFO L933 BasicCegarLoop]: 672 mSDtfsCounter, 1857 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 570 mSolverCounterSat, 532 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s 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, 1.0s IncrementalHoareTripleChecker+Time [2022-02-23 19:52:42,171 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1865 Valid, 754 Invalid, 1102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [532 Valid, 570 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-02-23 19:52:42,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 959 states. [2022-02-23 19:52:42,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 959 to 762. [2022-02-23 19:52:42,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 762 states, 595 states have (on average 1.3983193277310924) internal successors, (832), 608 states have internal predecessors, (832), 108 states have call successors, (108), 48 states have call predecessors, (108), 58 states have return successors, (124), 110 states have call predecessors, (124), 100 states have call successors, (124) [2022-02-23 19:52:42,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 762 states to 762 states and 1064 transitions. [2022-02-23 19:52:42,189 INFO L78 Accepts]: Start accepts. Automaton has 762 states and 1064 transitions. Word has length 40 [2022-02-23 19:52:42,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 19:52:42,190 INFO L470 AbstractCegarLoop]: Abstraction has 762 states and 1064 transitions. [2022-02-23 19:52:42,190 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 3 states have internal predecessors, (28), 3 states have call successors, (9), 6 states have call predecessors, (9), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-02-23 19:52:42,190 INFO L276 IsEmpty]: Start isEmpty. Operand 762 states and 1064 transitions. [2022-02-23 19:52:42,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-02-23 19:52:42,192 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 19:52:42,192 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 19:52:42,192 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-02-23 19:52:42,192 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 19:52:42,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 19:52:42,193 INFO L85 PathProgramCache]: Analyzing trace with hash 689414503, now seen corresponding path program 1 times [2022-02-23 19:52:42,193 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 19:52:42,193 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515114077] [2022-02-23 19:52:42,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 19:52:42,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 19:52:42,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:52:42,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-23 19:52:42,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:52:42,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-23 19:52:42,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:52:42,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-23 19:52:42,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:52:42,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-02-23 19:52:42,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:52:42,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-23 19:52:42,309 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 19:52:42,309 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515114077] [2022-02-23 19:52:42,309 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1515114077] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-23 19:52:42,309 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-23 19:52:42,309 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-02-23 19:52:42,309 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558044560] [2022-02-23 19:52:42,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-23 19:52:42,310 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-02-23 19:52:42,310 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 19:52:42,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-02-23 19:52:42,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-02-23 19:52:42,310 INFO L87 Difference]: Start difference. First operand 762 states and 1064 transitions. Second operand has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 3 states have internal predecessors, (32), 3 states have call successors, (10), 7 states have call predecessors, (10), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-02-23 19:52:43,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 19:52:43,448 INFO L93 Difference]: Finished difference Result 942 states and 1357 transitions. [2022-02-23 19:52:43,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-02-23 19:52:43,449 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 3 states have internal predecessors, (32), 3 states have call successors, (10), 7 states have call predecessors, (10), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 46 [2022-02-23 19:52:43,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 19:52:43,453 INFO L225 Difference]: With dead ends: 942 [2022-02-23 19:52:43,454 INFO L226 Difference]: Without dead ends: 942 [2022-02-23 19:52:43,454 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2022-02-23 19:52:43,454 INFO L933 BasicCegarLoop]: 791 mSDtfsCounter, 936 mSDsluCounter, 527 mSDsCounter, 0 mSdLazyCounter, 878 mSolverCounterSat, 297 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s 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, 1.1s IncrementalHoareTripleChecker+Time [2022-02-23 19:52:43,455 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [942 Valid, 1318 Invalid, 1175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [297 Valid, 878 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-02-23 19:52:43,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 942 states. [2022-02-23 19:52:43,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 942 to 762. [2022-02-23 19:52:43,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 762 states, 595 states have (on average 1.3966386554621848) internal successors, (831), 608 states have internal predecessors, (831), 108 states have call successors, (108), 48 states have call predecessors, (108), 58 states have return successors, (124), 110 states have call predecessors, (124), 100 states have call successors, (124) [2022-02-23 19:52:43,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 762 states to 762 states and 1063 transitions. [2022-02-23 19:52:43,473 INFO L78 Accepts]: Start accepts. Automaton has 762 states and 1063 transitions. Word has length 46 [2022-02-23 19:52:43,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 19:52:43,473 INFO L470 AbstractCegarLoop]: Abstraction has 762 states and 1063 transitions. [2022-02-23 19:52:43,474 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 3 states have internal predecessors, (32), 3 states have call successors, (10), 7 states have call predecessors, (10), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-02-23 19:52:43,474 INFO L276 IsEmpty]: Start isEmpty. Operand 762 states and 1063 transitions. [2022-02-23 19:52:43,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-23 19:52:43,475 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 19:52:43,475 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 19:52:43,476 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-02-23 19:52:43,476 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 19:52:43,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 19:52:43,476 INFO L85 PathProgramCache]: Analyzing trace with hash -735623654, now seen corresponding path program 1 times [2022-02-23 19:52:43,476 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 19:52:43,476 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536972079] [2022-02-23 19:52:43,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 19:52:43,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 19:52:43,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:52:43,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-23 19:52:43,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:52:43,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-23 19:52:43,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:52:43,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-23 19:52:43,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:52:43,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-02-23 19:52:43,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:52:43,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-23 19:52:43,605 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 19:52:43,605 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536972079] [2022-02-23 19:52:43,605 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [536972079] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-23 19:52:43,605 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-23 19:52:43,605 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-02-23 19:52:43,605 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504958505] [2022-02-23 19:52:43,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-23 19:52:43,605 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-02-23 19:52:43,606 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 19:52:43,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-02-23 19:52:43,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-02-23 19:52:43,606 INFO L87 Difference]: Start difference. First operand 762 states and 1063 transitions. Second operand has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 3 states have internal predecessors, (34), 3 states have call successors, (9), 7 states have call predecessors, (9), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-02-23 19:52:44,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 19:52:44,912 INFO L93 Difference]: Finished difference Result 897 states and 1299 transitions. [2022-02-23 19:52:44,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-02-23 19:52:44,912 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 3 states have internal predecessors, (34), 3 states have call successors, (9), 7 states have call predecessors, (9), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 47 [2022-02-23 19:52:44,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 19:52:44,915 INFO L225 Difference]: With dead ends: 897 [2022-02-23 19:52:44,915 INFO L226 Difference]: Without dead ends: 897 [2022-02-23 19:52:44,916 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=53, Unknown=0, NotChecked=0, Total=90 [2022-02-23 19:52:44,916 INFO L933 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, 1.2s IncrementalHoareTripleChecker+Time [2022-02-23 19:52:44,916 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1513 Valid, 1140 Invalid, 1554 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [402 Valid, 1152 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-02-23 19:52:44,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 897 states. [2022-02-23 19:52:44,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 897 to 751. [2022-02-23 19:52:44,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 751 states, 588 states have (on average 1.3979591836734695) internal successors, (822), 601 states have internal predecessors, (822), 106 states have call successors, (106), 46 states have call predecessors, (106), 56 states have return successors, (122), 108 states have call predecessors, (122), 98 states have call successors, (122) [2022-02-23 19:52:44,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 751 states to 751 states and 1050 transitions. [2022-02-23 19:52:44,933 INFO L78 Accepts]: Start accepts. Automaton has 751 states and 1050 transitions. Word has length 47 [2022-02-23 19:52:44,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 19:52:44,934 INFO L470 AbstractCegarLoop]: Abstraction has 751 states and 1050 transitions. [2022-02-23 19:52:44,934 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 3 states have internal predecessors, (34), 3 states have call successors, (9), 7 states have call predecessors, (9), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-02-23 19:52:44,934 INFO L276 IsEmpty]: Start isEmpty. Operand 751 states and 1050 transitions. [2022-02-23 19:52:44,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-23 19:52:44,936 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 19:52:44,936 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 19:52:44,936 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-02-23 19:52:44,936 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 19:52:44,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 19:52:44,936 INFO L85 PathProgramCache]: Analyzing trace with hash -1452242056, now seen corresponding path program 1 times [2022-02-23 19:52:44,937 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 19:52:44,937 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021333506] [2022-02-23 19:52:44,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 19:52:44,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 19:52:44,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:52:44,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-23 19:52:45,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:52:45,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-23 19:52:45,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:52:45,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-23 19:52:45,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:52:45,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-02-23 19:52:45,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:52:45,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-02-23 19:52:45,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:52:45,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-23 19:52:45,093 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 19:52:45,094 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021333506] [2022-02-23 19:52:45,094 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2021333506] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-23 19:52:45,094 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-23 19:52:45,094 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-02-23 19:52:45,094 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166037533] [2022-02-23 19:52:45,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-23 19:52:45,094 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-02-23 19:52:45,094 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 19:52:45,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-02-23 19:52:45,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2022-02-23 19:52:45,095 INFO L87 Difference]: Start difference. First operand 751 states and 1050 transitions. Second operand has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 7 states have internal predecessors, (36), 4 states have call successors, (7), 6 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2022-02-23 19:52:47,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 19:52:47,755 INFO L93 Difference]: Finished difference Result 1006 states and 1439 transitions. [2022-02-23 19:52:47,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-02-23 19:52:47,755 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 7 states have internal predecessors, (36), 4 states have call successors, (7), 6 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) Word has length 48 [2022-02-23 19:52:47,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 19:52:47,758 INFO L225 Difference]: With dead ends: 1006 [2022-02-23 19:52:47,758 INFO L226 Difference]: Without dead ends: 1006 [2022-02-23 19:52:47,758 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=119, Invalid=343, Unknown=0, NotChecked=0, Total=462 [2022-02-23 19:52:47,759 INFO L933 BasicCegarLoop]: 767 mSDtfsCounter, 1432 mSDsluCounter, 1281 mSDsCounter, 0 mSdLazyCounter, 3360 mSolverCounterSat, 443 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s 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, 2.3s IncrementalHoareTripleChecker+Time [2022-02-23 19:52:47,759 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1460 Valid, 2048 Invalid, 3803 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [443 Valid, 3360 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-02-23 19:52:47,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1006 states. [2022-02-23 19:52:47,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1006 to 794. [2022-02-23 19:52:47,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 794 states, 623 states have (on average 1.3964686998394864) internal successors, (870), 635 states have internal predecessors, (870), 110 states have call successors, (110), 49 states have call predecessors, (110), 60 states have return successors, (131), 114 states have call predecessors, (131), 102 states have call successors, (131) [2022-02-23 19:52:47,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 794 states to 794 states and 1111 transitions. [2022-02-23 19:52:47,778 INFO L78 Accepts]: Start accepts. Automaton has 794 states and 1111 transitions. Word has length 48 [2022-02-23 19:52:47,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 19:52:47,778 INFO L470 AbstractCegarLoop]: Abstraction has 794 states and 1111 transitions. [2022-02-23 19:52:47,778 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 7 states have internal predecessors, (36), 4 states have call successors, (7), 6 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2022-02-23 19:52:47,778 INFO L276 IsEmpty]: Start isEmpty. Operand 794 states and 1111 transitions. [2022-02-23 19:52:47,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-02-23 19:52:47,780 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 19:52:47,780 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 19:52:47,780 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-02-23 19:52:47,780 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 19:52:47,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 19:52:47,781 INFO L85 PathProgramCache]: Analyzing trace with hash -1568241764, now seen corresponding path program 1 times [2022-02-23 19:52:47,781 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 19:52:47,781 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768024159] [2022-02-23 19:52:47,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 19:52:47,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 19:52:47,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:52:47,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-23 19:52:47,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:52:47,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-23 19:52:47,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:52:47,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-23 19:52:47,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:52:47,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-02-23 19:52:47,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:52:47,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-02-23 19:52:47,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:52:47,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-23 19:52:47,977 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 19:52:47,978 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768024159] [2022-02-23 19:52:47,978 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [768024159] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-23 19:52:47,978 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-23 19:52:47,978 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-02-23 19:52:47,978 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529857429] [2022-02-23 19:52:47,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-23 19:52:47,978 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-02-23 19:52:47,978 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 19:52:47,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-02-23 19:52:47,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-02-23 19:52:47,979 INFO L87 Difference]: Start difference. First operand 794 states and 1111 transitions. Second operand has 10 states, 10 states have (on average 3.8) internal successors, (38), 6 states have internal predecessors, (38), 3 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2022-02-23 19:52:49,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 19:52:49,849 INFO L93 Difference]: Finished difference Result 924 states and 1335 transitions. [2022-02-23 19:52:49,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-02-23 19:52:49,850 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.8) internal successors, (38), 6 states have internal predecessors, (38), 3 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) Word has length 50 [2022-02-23 19:52:49,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 19:52:49,853 INFO L225 Difference]: With dead ends: 924 [2022-02-23 19:52:49,853 INFO L226 Difference]: Without dead ends: 924 [2022-02-23 19:52:49,854 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2022-02-23 19:52:49,854 INFO L933 BasicCegarLoop]: 652 mSDtfsCounter, 1534 mSDsluCounter, 802 mSDsCounter, 0 mSdLazyCounter, 1778 mSolverCounterSat, 390 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s 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, 1.6s IncrementalHoareTripleChecker+Time [2022-02-23 19:52:49,855 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1545 Valid, 1454 Invalid, 2168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [390 Valid, 1778 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-02-23 19:52:49,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 924 states. [2022-02-23 19:52:49,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 924 to 797. [2022-02-23 19:52:49,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 797 states, 626 states have (on average 1.3961661341853036) internal successors, (874), 638 states have internal predecessors, (874), 110 states have call successors, (110), 49 states have call predecessors, (110), 60 states have return successors, (131), 114 states have call predecessors, (131), 102 states have call successors, (131) [2022-02-23 19:52:49,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 797 states to 797 states and 1115 transitions. [2022-02-23 19:52:49,873 INFO L78 Accepts]: Start accepts. Automaton has 797 states and 1115 transitions. Word has length 50 [2022-02-23 19:52:49,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 19:52:49,873 INFO L470 AbstractCegarLoop]: Abstraction has 797 states and 1115 transitions. [2022-02-23 19:52:49,874 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.8) internal successors, (38), 6 states have internal predecessors, (38), 3 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2022-02-23 19:52:49,874 INFO L276 IsEmpty]: Start isEmpty. Operand 797 states and 1115 transitions. [2022-02-23 19:52:49,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-02-23 19:52:49,876 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 19:52:49,876 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 19:52:49,876 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-02-23 19:52:49,876 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 19:52:49,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 19:52:49,876 INFO L85 PathProgramCache]: Analyzing trace with hash 1729653179, now seen corresponding path program 1 times [2022-02-23 19:52:49,876 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 19:52:49,877 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740756722] [2022-02-23 19:52:49,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 19:52:49,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 19:52:49,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:52:49,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-23 19:52:49,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:52:50,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-23 19:52:50,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:52:50,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-23 19:52:50,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:52:50,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-02-23 19:52:50,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:52:50,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-02-23 19:52:50,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:52:50,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-23 19:52:50,106 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 19:52:50,106 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740756722] [2022-02-23 19:52:50,106 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [740756722] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-23 19:52:50,106 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-23 19:52:50,106 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-02-23 19:52:50,106 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254499446] [2022-02-23 19:52:50,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-23 19:52:50,107 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-02-23 19:52:50,107 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 19:52:50,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-02-23 19:52:50,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2022-02-23 19:52:50,108 INFO L87 Difference]: Start difference. First operand 797 states and 1115 transitions. Second operand has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 8 states have internal predecessors, (38), 4 states have call successors, (7), 6 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2022-02-23 19:52:52,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 19:52:52,302 INFO L93 Difference]: Finished difference Result 914 states and 1320 transitions. [2022-02-23 19:52:52,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-02-23 19:52:52,302 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 8 states have internal predecessors, (38), 4 states have call successors, (7), 6 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) Word has length 50 [2022-02-23 19:52:52,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 19:52:52,305 INFO L225 Difference]: With dead ends: 914 [2022-02-23 19:52:52,305 INFO L226 Difference]: Without dead ends: 914 [2022-02-23 19:52:52,305 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2022-02-23 19:52:52,306 INFO L933 BasicCegarLoop]: 652 mSDtfsCounter, 1576 mSDsluCounter, 1166 mSDsCounter, 0 mSdLazyCounter, 2993 mSolverCounterSat, 411 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s 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, 1.9s IncrementalHoareTripleChecker+Time [2022-02-23 19:52:52,306 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1585 Valid, 1818 Invalid, 3404 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [411 Valid, 2993 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-02-23 19:52:52,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 914 states. [2022-02-23 19:52:52,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 914 to 792. [2022-02-23 19:52:52,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 792 states, 621 states have (on average 1.391304347826087) internal successors, (864), 633 states have internal predecessors, (864), 110 states have call successors, (110), 49 states have call predecessors, (110), 60 states have return successors, (131), 114 states have call predecessors, (131), 102 states have call successors, (131) [2022-02-23 19:52:52,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 792 states to 792 states and 1105 transitions. [2022-02-23 19:52:52,323 INFO L78 Accepts]: Start accepts. Automaton has 792 states and 1105 transitions. Word has length 50 [2022-02-23 19:52:52,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 19:52:52,323 INFO L470 AbstractCegarLoop]: Abstraction has 792 states and 1105 transitions. [2022-02-23 19:52:52,323 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 8 states have internal predecessors, (38), 4 states have call successors, (7), 6 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2022-02-23 19:52:52,323 INFO L276 IsEmpty]: Start isEmpty. Operand 792 states and 1105 transitions. [2022-02-23 19:52:52,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-02-23 19:52:52,325 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 19:52:52,325 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 19:52:52,325 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-02-23 19:52:52,325 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 19:52:52,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 19:52:52,326 INFO L85 PathProgramCache]: Analyzing trace with hash -111891045, now seen corresponding path program 1 times [2022-02-23 19:52:52,326 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 19:52:52,326 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667649715] [2022-02-23 19:52:52,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 19:52:52,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 19:52:52,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:52:52,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-23 19:52:52,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:52:52,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-23 19:52:52,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:52:52,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-23 19:52:52,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:52:52,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-02-23 19:52:52,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:52:52,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-02-23 19:52:52,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:52:52,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-23 19:52:52,477 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 19:52:52,477 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667649715] [2022-02-23 19:52:52,477 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1667649715] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-23 19:52:52,477 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-23 19:52:52,477 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-02-23 19:52:52,477 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282402192] [2022-02-23 19:52:52,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-23 19:52:52,478 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-02-23 19:52:52,478 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 19:52:52,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-02-23 19:52:52,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-02-23 19:52:52,479 INFO L87 Difference]: Start difference. First operand 792 states and 1105 transitions. Second operand has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (7), 6 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2022-02-23 19:52:54,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 19:52:54,233 INFO L93 Difference]: Finished difference Result 1074 states and 1532 transitions. [2022-02-23 19:52:54,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-02-23 19:52:54,234 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (7), 6 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) Word has length 50 [2022-02-23 19:52:54,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 19:52:54,237 INFO L225 Difference]: With dead ends: 1074 [2022-02-23 19:52:54,238 INFO L226 Difference]: Without dead ends: 1074 [2022-02-23 19:52:54,238 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-02-23 19:52:54,238 INFO L933 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 [2022-02-23 19:52:54,238 INFO L934 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] [2022-02-23 19:52:54,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1074 states. [2022-02-23 19:52:54,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1074 to 848. [2022-02-23 19:52:54,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 848 states, 663 states have (on average 1.3725490196078431) internal successors, (910), 677 states have internal predecessors, (910), 112 states have call successors, (112), 51 states have call predecessors, (112), 72 states have return successors, (143), 126 states have call predecessors, (143), 104 states have call successors, (143) [2022-02-23 19:52:54,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 848 states to 848 states and 1165 transitions. [2022-02-23 19:52:54,261 INFO L78 Accepts]: Start accepts. Automaton has 848 states and 1165 transitions. Word has length 50 [2022-02-23 19:52:54,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 19:52:54,261 INFO L470 AbstractCegarLoop]: Abstraction has 848 states and 1165 transitions. [2022-02-23 19:52:54,262 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (7), 6 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2022-02-23 19:52:54,262 INFO L276 IsEmpty]: Start isEmpty. Operand 848 states and 1165 transitions. [2022-02-23 19:52:54,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-02-23 19:52:54,264 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 19:52:54,264 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 19:52:54,264 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-02-23 19:52:54,264 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 19:52:54,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 19:52:54,264 INFO L85 PathProgramCache]: Analyzing trace with hash 1040673977, now seen corresponding path program 1 times [2022-02-23 19:52:54,264 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 19:52:54,265 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713867423] [2022-02-23 19:52:54,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 19:52:54,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 19:52:54,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:52:54,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-23 19:52:54,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:52:54,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-23 19:52:54,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:52:54,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-23 19:52:54,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:52:54,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-02-23 19:52:54,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:52:54,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-02-23 19:52:54,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:52:54,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-23 19:52:54,388 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 19:52:54,388 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713867423] [2022-02-23 19:52:54,388 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [713867423] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-23 19:52:54,388 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-23 19:52:54,388 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-02-23 19:52:54,389 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563981726] [2022-02-23 19:52:54,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-23 19:52:54,389 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-23 19:52:54,389 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 19:52:54,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-23 19:52:54,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-02-23 19:52:54,390 INFO L87 Difference]: Start difference. First operand 848 states and 1165 transitions. Second operand has 8 states, 8 states have (on average 4.875) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (10), 7 states have call predecessors, (10), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2022-02-23 19:52:56,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 19:52:56,105 INFO L93 Difference]: Finished difference Result 937 states and 1338 transitions. [2022-02-23 19:52:56,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-02-23 19:52:56,105 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (10), 7 states have call predecessors, (10), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) Word has length 54 [2022-02-23 19:52:56,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 19:52:56,108 INFO L225 Difference]: With dead ends: 937 [2022-02-23 19:52:56,108 INFO L226 Difference]: Without dead ends: 937 [2022-02-23 19:52:56,108 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=67, Unknown=0, NotChecked=0, Total=110 [2022-02-23 19:52:56,108 INFO L933 BasicCegarLoop]: 641 mSDtfsCounter, 1355 mSDsluCounter, 512 mSDsCounter, 0 mSdLazyCounter, 1688 mSolverCounterSat, 497 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s 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, 1.6s IncrementalHoareTripleChecker+Time [2022-02-23 19:52:56,109 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1388 Valid, 1153 Invalid, 2185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [497 Valid, 1688 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-02-23 19:52:56,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 937 states. [2022-02-23 19:52:56,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 937 to 817. [2022-02-23 19:52:56,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 817 states, 639 states have (on average 1.3724569640062598) internal successors, (877), 651 states have internal predecessors, (877), 110 states have call successors, (110), 50 states have call predecessors, (110), 67 states have return successors, (138), 121 states have call predecessors, (138), 103 states have call successors, (138) [2022-02-23 19:52:56,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 817 states to 817 states and 1125 transitions. [2022-02-23 19:52:56,125 INFO L78 Accepts]: Start accepts. Automaton has 817 states and 1125 transitions. Word has length 54 [2022-02-23 19:52:56,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 19:52:56,125 INFO L470 AbstractCegarLoop]: Abstraction has 817 states and 1125 transitions. [2022-02-23 19:52:56,125 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (10), 7 states have call predecessors, (10), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2022-02-23 19:52:56,125 INFO L276 IsEmpty]: Start isEmpty. Operand 817 states and 1125 transitions. [2022-02-23 19:52:56,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-02-23 19:52:56,127 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 19:52:56,127 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 19:52:56,127 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-02-23 19:52:56,127 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 19:52:56,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 19:52:56,128 INFO L85 PathProgramCache]: Analyzing trace with hash -1255093406, now seen corresponding path program 1 times [2022-02-23 19:52:56,128 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 19:52:56,128 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562353450] [2022-02-23 19:52:56,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 19:52:56,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 19:52:56,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:52:56,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-23 19:52:56,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:52:56,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-23 19:52:56,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:52:56,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-23 19:52:56,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:52:56,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-02-23 19:52:56,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:52:56,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-02-23 19:52:56,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:52:56,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-23 19:52:56,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:52:56,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-23 19:52:56,316 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 19:52:56,316 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562353450] [2022-02-23 19:52:56,318 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [562353450] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-23 19:52:56,318 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-23 19:52:56,318 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-02-23 19:52:56,318 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716118333] [2022-02-23 19:52:56,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-23 19:52:56,319 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-02-23 19:52:56,319 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 19:52:56,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-02-23 19:52:56,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2022-02-23 19:52:56,319 INFO L87 Difference]: Start difference. First operand 817 states and 1125 transitions. Second operand has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (8), 8 states have call predecessors, (8), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2022-02-23 19:52:57,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 19:52:57,563 INFO L93 Difference]: Finished difference Result 960 states and 1364 transitions. [2022-02-23 19:52:57,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-02-23 19:52:57,564 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (8), 8 states have call predecessors, (8), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) Word has length 52 [2022-02-23 19:52:57,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 19:52:57,567 INFO L225 Difference]: With dead ends: 960 [2022-02-23 19:52:57,567 INFO L226 Difference]: Without dead ends: 960 [2022-02-23 19:52:57,567 INFO L932 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 [2022-02-23 19:52:57,568 INFO L933 BasicCegarLoop]: 694 mSDtfsCounter, 1541 mSDsluCounter, 671 mSDsCounter, 0 mSdLazyCounter, 1068 mSolverCounterSat, 555 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s 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, 1.2s IncrementalHoareTripleChecker+Time [2022-02-23 19:52:57,568 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1544 Valid, 1365 Invalid, 1623 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [555 Valid, 1068 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-02-23 19:52:57,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 960 states. [2022-02-23 19:52:57,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 960 to 836. [2022-02-23 19:52:57,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 836 states, 655 states have (on average 1.369465648854962) internal successors, (897), 668 states have internal predecessors, (897), 111 states have call successors, (111), 51 states have call predecessors, (111), 69 states have return successors, (140), 123 states have call predecessors, (140), 104 states have call successors, (140) [2022-02-23 19:52:57,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 836 states to 836 states and 1148 transitions. [2022-02-23 19:52:57,585 INFO L78 Accepts]: Start accepts. Automaton has 836 states and 1148 transitions. Word has length 52 [2022-02-23 19:52:57,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 19:52:57,585 INFO L470 AbstractCegarLoop]: Abstraction has 836 states and 1148 transitions. [2022-02-23 19:52:57,586 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (8), 8 states have call predecessors, (8), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2022-02-23 19:52:57,586 INFO L276 IsEmpty]: Start isEmpty. Operand 836 states and 1148 transitions. [2022-02-23 19:52:57,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-02-23 19:52:57,587 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 19:52:57,587 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 19:52:57,588 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-02-23 19:52:57,588 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 19:52:57,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 19:52:57,588 INFO L85 PathProgramCache]: Analyzing trace with hash 856883353, now seen corresponding path program 1 times [2022-02-23 19:52:57,588 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 19:52:57,588 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690006233] [2022-02-23 19:52:57,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 19:52:57,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 19:52:57,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:52:57,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-23 19:52:57,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:52:57,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-23 19:52:57,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:52:57,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-23 19:52:57,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:52:57,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-02-23 19:52:57,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:52:57,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-02-23 19:52:57,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:52:57,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-23 19:52:57,767 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 19:52:57,767 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690006233] [2022-02-23 19:52:57,768 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [690006233] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-23 19:52:57,768 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-23 19:52:57,768 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-02-23 19:52:57,768 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018525681] [2022-02-23 19:52:57,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-23 19:52:57,768 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-02-23 19:52:57,768 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 19:52:57,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-02-23 19:52:57,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2022-02-23 19:52:57,769 INFO L87 Difference]: Start difference. First operand 836 states and 1148 transitions. Second operand has 12 states, 12 states have (on average 3.25) internal successors, (39), 6 states have internal predecessors, (39), 2 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2022-02-23 19:53:00,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 19:53:00,023 INFO L93 Difference]: Finished difference Result 978 states and 1385 transitions. [2022-02-23 19:53:00,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-02-23 19:53:00,024 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.25) internal successors, (39), 6 states have internal predecessors, (39), 2 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) Word has length 51 [2022-02-23 19:53:00,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 19:53:00,026 INFO L225 Difference]: With dead ends: 978 [2022-02-23 19:53:00,026 INFO L226 Difference]: Without dead ends: 977 [2022-02-23 19:53:00,027 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2022-02-23 19:53:00,027 INFO L933 BasicCegarLoop]: 707 mSDtfsCounter, 724 mSDsluCounter, 1767 mSDsCounter, 0 mSdLazyCounter, 4259 mSolverCounterSat, 277 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s 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, 2.2s IncrementalHoareTripleChecker+Time [2022-02-23 19:53:00,027 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [726 Valid, 2474 Invalid, 4536 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [277 Valid, 4259 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-02-23 19:53:00,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 977 states. [2022-02-23 19:53:00,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 977 to 855. [2022-02-23 19:53:00,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 855 states, 671 states have (on average 1.3621460506706409) internal successors, (914), 685 states have internal predecessors, (914), 112 states have call successors, (112), 51 states have call predecessors, (112), 71 states have return successors, (143), 126 states have call predecessors, (143), 105 states have call successors, (143) [2022-02-23 19:53:00,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 855 states to 855 states and 1169 transitions. [2022-02-23 19:53:00,042 INFO L78 Accepts]: Start accepts. Automaton has 855 states and 1169 transitions. Word has length 51 [2022-02-23 19:53:00,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 19:53:00,042 INFO L470 AbstractCegarLoop]: Abstraction has 855 states and 1169 transitions. [2022-02-23 19:53:00,042 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.25) internal successors, (39), 6 states have internal predecessors, (39), 2 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2022-02-23 19:53:00,043 INFO L276 IsEmpty]: Start isEmpty. Operand 855 states and 1169 transitions. [2022-02-23 19:53:00,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-02-23 19:53:00,045 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 19:53:00,045 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 19:53:00,045 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-02-23 19:53:00,045 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 19:53:00,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 19:53:00,045 INFO L85 PathProgramCache]: Analyzing trace with hash 856915097, now seen corresponding path program 1 times [2022-02-23 19:53:00,045 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 19:53:00,045 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961294073] [2022-02-23 19:53:00,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 19:53:00,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 19:53:00,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:00,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-23 19:53:00,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:00,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-23 19:53:00,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:00,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-23 19:53:00,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:00,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-02-23 19:53:00,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:00,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-02-23 19:53:00,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:00,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-23 19:53:00,210 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 19:53:00,210 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961294073] [2022-02-23 19:53:00,210 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1961294073] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-23 19:53:00,210 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-23 19:53:00,210 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-02-23 19:53:00,211 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809607188] [2022-02-23 19:53:00,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-23 19:53:00,211 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-02-23 19:53:00,211 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 19:53:00,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-02-23 19:53:00,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2022-02-23 19:53:00,212 INFO L87 Difference]: Start difference. First operand 855 states and 1169 transitions. Second operand has 12 states, 12 states have (on average 3.25) internal successors, (39), 6 states have internal predecessors, (39), 2 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2022-02-23 19:53:01,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 19:53:01,932 INFO L93 Difference]: Finished difference Result 987 states and 1396 transitions. [2022-02-23 19:53:01,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-02-23 19:53:01,937 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.25) internal successors, (39), 6 states have internal predecessors, (39), 2 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) Word has length 51 [2022-02-23 19:53:01,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 19:53:01,941 INFO L225 Difference]: With dead ends: 987 [2022-02-23 19:53:01,941 INFO L226 Difference]: Without dead ends: 966 [2022-02-23 19:53:01,941 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2022-02-23 19:53:01,942 INFO L933 BasicCegarLoop]: 706 mSDtfsCounter, 1084 mSDsluCounter, 1652 mSDsCounter, 0 mSdLazyCounter, 3508 mSolverCounterSat, 415 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s 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, 1.7s IncrementalHoareTripleChecker+Time [2022-02-23 19:53:01,942 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1086 Valid, 2358 Invalid, 3923 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [415 Valid, 3508 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-02-23 19:53:01,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 966 states. [2022-02-23 19:53:01,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 966 to 842. [2022-02-23 19:53:01,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 842 states, 660 states have (on average 1.3666666666666667) internal successors, (902), 674 states have internal predecessors, (902), 112 states have call successors, (112), 51 states have call predecessors, (112), 69 states have return successors, (141), 124 states have call predecessors, (141), 105 states have call successors, (141) [2022-02-23 19:53:01,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 842 states to 842 states and 1155 transitions. [2022-02-23 19:53:01,960 INFO L78 Accepts]: Start accepts. Automaton has 842 states and 1155 transitions. Word has length 51 [2022-02-23 19:53:01,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 19:53:01,960 INFO L470 AbstractCegarLoop]: Abstraction has 842 states and 1155 transitions. [2022-02-23 19:53:01,960 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.25) internal successors, (39), 6 states have internal predecessors, (39), 2 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2022-02-23 19:53:01,960 INFO L276 IsEmpty]: Start isEmpty. Operand 842 states and 1155 transitions. [2022-02-23 19:53:01,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-02-23 19:53:01,962 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 19:53:01,962 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 19:53:01,962 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-02-23 19:53:01,963 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 19:53:01,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 19:53:01,963 INFO L85 PathProgramCache]: Analyzing trace with hash -222651470, now seen corresponding path program 1 times [2022-02-23 19:53:01,963 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 19:53:01,963 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593567567] [2022-02-23 19:53:01,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 19:53:01,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 19:53:01,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:02,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-23 19:53:02,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:02,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-23 19:53:02,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:02,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-23 19:53:02,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:02,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-02-23 19:53:02,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:02,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-02-23 19:53:02,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:02,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-23 19:53:02,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:02,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-23 19:53:02,211 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 19:53:02,211 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593567567] [2022-02-23 19:53:02,211 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1593567567] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-23 19:53:02,212 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-23 19:53:02,212 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-02-23 19:53:02,212 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357969349] [2022-02-23 19:53:02,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-23 19:53:02,213 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-02-23 19:53:02,213 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 19:53:02,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-02-23 19:53:02,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2022-02-23 19:53:02,213 INFO L87 Difference]: Start difference. First operand 842 states and 1155 transitions. Second operand has 13 states, 13 states have (on average 3.0) internal successors, (39), 7 states have internal predecessors, (39), 3 states have call successors, (8), 8 states have call predecessors, (8), 4 states have return successors, (6), 5 states have call predecessors, (6), 2 states have call successors, (6) [2022-02-23 19:53:04,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 19:53:04,207 INFO L93 Difference]: Finished difference Result 968 states and 1372 transitions. [2022-02-23 19:53:04,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-02-23 19:53:04,207 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 7 states have internal predecessors, (39), 3 states have call successors, (8), 8 states have call predecessors, (8), 4 states have return successors, (6), 5 states have call predecessors, (6), 2 states have call successors, (6) Word has length 53 [2022-02-23 19:53:04,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 19:53:04,211 INFO L225 Difference]: With dead ends: 968 [2022-02-23 19:53:04,211 INFO L226 Difference]: Without dead ends: 968 [2022-02-23 19:53:04,211 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=106, Invalid=274, Unknown=0, NotChecked=0, Total=380 [2022-02-23 19:53:04,212 INFO L933 BasicCegarLoop]: 659 mSDtfsCounter, 1967 mSDsluCounter, 783 mSDsCounter, 0 mSdLazyCounter, 2409 mSolverCounterSat, 654 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s 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, 1.7s IncrementalHoareTripleChecker+Time [2022-02-23 19:53:04,212 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1993 Valid, 1442 Invalid, 3063 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [654 Valid, 2409 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-02-23 19:53:04,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 968 states. [2022-02-23 19:53:04,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 968 to 842. [2022-02-23 19:53:04,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 842 states, 660 states have (on average 1.3651515151515152) internal successors, (901), 674 states have internal predecessors, (901), 112 states have call successors, (112), 51 states have call predecessors, (112), 69 states have return successors, (141), 124 states have call predecessors, (141), 105 states have call successors, (141) [2022-02-23 19:53:04,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 842 states to 842 states and 1154 transitions. [2022-02-23 19:53:04,231 INFO L78 Accepts]: Start accepts. Automaton has 842 states and 1154 transitions. Word has length 53 [2022-02-23 19:53:04,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 19:53:04,231 INFO L470 AbstractCegarLoop]: Abstraction has 842 states and 1154 transitions. [2022-02-23 19:53:04,231 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 7 states have internal predecessors, (39), 3 states have call successors, (8), 8 states have call predecessors, (8), 4 states have return successors, (6), 5 states have call predecessors, (6), 2 states have call successors, (6) [2022-02-23 19:53:04,231 INFO L276 IsEmpty]: Start isEmpty. Operand 842 states and 1154 transitions. [2022-02-23 19:53:04,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-02-23 19:53:04,235 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 19:53:04,235 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 19:53:04,235 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-02-23 19:53:04,235 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 19:53:04,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 19:53:04,236 INFO L85 PathProgramCache]: Analyzing trace with hash 179775437, now seen corresponding path program 1 times [2022-02-23 19:53:04,236 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 19:53:04,236 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032805346] [2022-02-23 19:53:04,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 19:53:04,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 19:53:04,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:04,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-23 19:53:04,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:04,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-23 19:53:04,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:04,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-23 19:53:04,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:04,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-02-23 19:53:04,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:04,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-02-23 19:53:04,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:04,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-23 19:53:04,410 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 19:53:04,410 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032805346] [2022-02-23 19:53:04,410 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2032805346] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-23 19:53:04,410 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-23 19:53:04,410 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-02-23 19:53:04,410 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419106339] [2022-02-23 19:53:04,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-23 19:53:04,411 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-02-23 19:53:04,411 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 19:53:04,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-02-23 19:53:04,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-02-23 19:53:04,411 INFO L87 Difference]: Start difference. First operand 842 states and 1154 transitions. Second operand has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 5 states have internal predecessors, (40), 3 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2022-02-23 19:53:06,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 19:53:06,288 INFO L93 Difference]: Finished difference Result 975 states and 1378 transitions. [2022-02-23 19:53:06,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-02-23 19:53:06,289 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 5 states have internal predecessors, (40), 3 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) Word has length 52 [2022-02-23 19:53:06,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 19:53:06,292 INFO L225 Difference]: With dead ends: 975 [2022-02-23 19:53:06,292 INFO L226 Difference]: Without dead ends: 943 [2022-02-23 19:53:06,293 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=86, Invalid=186, Unknown=0, NotChecked=0, Total=272 [2022-02-23 19:53:06,293 INFO L933 BasicCegarLoop]: 659 mSDtfsCounter, 1246 mSDsluCounter, 607 mSDsCounter, 0 mSdLazyCounter, 1905 mSolverCounterSat, 317 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s 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, 1.6s IncrementalHoareTripleChecker+Time [2022-02-23 19:53:06,293 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1261 Valid, 1266 Invalid, 2222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [317 Valid, 1905 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-02-23 19:53:06,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 943 states. [2022-02-23 19:53:06,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 943 to 815. [2022-02-23 19:53:06,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 815 states, 638 states have (on average 1.3746081504702194) internal successors, (877), 651 states have internal predecessors, (877), 109 states have call successors, (109), 49 states have call predecessors, (109), 67 states have return successors, (138), 121 states have call predecessors, (138), 102 states have call successors, (138) [2022-02-23 19:53:06,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 815 states to 815 states and 1124 transitions. [2022-02-23 19:53:06,310 INFO L78 Accepts]: Start accepts. Automaton has 815 states and 1124 transitions. Word has length 52 [2022-02-23 19:53:06,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 19:53:06,311 INFO L470 AbstractCegarLoop]: Abstraction has 815 states and 1124 transitions. [2022-02-23 19:53:06,311 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 5 states have internal predecessors, (40), 3 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2022-02-23 19:53:06,311 INFO L276 IsEmpty]: Start isEmpty. Operand 815 states and 1124 transitions. [2022-02-23 19:53:06,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-02-23 19:53:06,313 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 19:53:06,313 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 19:53:06,313 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-02-23 19:53:06,313 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 19:53:06,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 19:53:06,313 INFO L85 PathProgramCache]: Analyzing trace with hash 760121073, now seen corresponding path program 1 times [2022-02-23 19:53:06,313 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 19:53:06,314 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229079265] [2022-02-23 19:53:06,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 19:53:06,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 19:53:06,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:06,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-23 19:53:06,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:06,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-23 19:53:06,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:06,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-23 19:53:06,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:06,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-02-23 19:53:06,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:06,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-02-23 19:53:06,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:06,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-23 19:53:06,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:06,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-23 19:53:06,563 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 19:53:06,563 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1229079265] [2022-02-23 19:53:06,564 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1229079265] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-23 19:53:06,564 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-23 19:53:06,564 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-02-23 19:53:06,564 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355992451] [2022-02-23 19:53:06,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-23 19:53:06,564 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-02-23 19:53:06,565 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 19:53:06,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-02-23 19:53:06,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2022-02-23 19:53:06,566 INFO L87 Difference]: Start difference. First operand 815 states and 1124 transitions. Second operand has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 7 states have internal predecessors, (40), 3 states have call successors, (8), 8 states have call predecessors, (8), 4 states have return successors, (6), 5 states have call predecessors, (6), 2 states have call successors, (6) [2022-02-23 19:53:08,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 19:53:08,168 INFO L93 Difference]: Finished difference Result 939 states and 1339 transitions. [2022-02-23 19:53:08,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-02-23 19:53:08,168 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 7 states have internal predecessors, (40), 3 states have call successors, (8), 8 states have call predecessors, (8), 4 states have return successors, (6), 5 states have call predecessors, (6), 2 states have call successors, (6) Word has length 54 [2022-02-23 19:53:08,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 19:53:08,171 INFO L225 Difference]: With dead ends: 939 [2022-02-23 19:53:08,171 INFO L226 Difference]: Without dead ends: 939 [2022-02-23 19:53:08,171 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=106, Invalid=274, Unknown=0, NotChecked=0, Total=380 [2022-02-23 19:53:08,172 INFO L933 BasicCegarLoop]: 630 mSDtfsCounter, 2257 mSDsluCounter, 553 mSDsCounter, 0 mSdLazyCounter, 1447 mSolverCounterSat, 790 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s 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, 1.3s IncrementalHoareTripleChecker+Time [2022-02-23 19:53:08,172 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2283 Valid, 1183 Invalid, 2237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [790 Valid, 1447 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-02-23 19:53:08,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 939 states. [2022-02-23 19:53:08,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 939 to 815. [2022-02-23 19:53:08,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 815 states, 638 states have (on average 1.3730407523510972) internal successors, (876), 651 states have internal predecessors, (876), 109 states have call successors, (109), 49 states have call predecessors, (109), 67 states have return successors, (138), 121 states have call predecessors, (138), 102 states have call successors, (138) [2022-02-23 19:53:08,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 815 states to 815 states and 1123 transitions. [2022-02-23 19:53:08,188 INFO L78 Accepts]: Start accepts. Automaton has 815 states and 1123 transitions. Word has length 54 [2022-02-23 19:53:08,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 19:53:08,188 INFO L470 AbstractCegarLoop]: Abstraction has 815 states and 1123 transitions. [2022-02-23 19:53:08,188 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 7 states have internal predecessors, (40), 3 states have call successors, (8), 8 states have call predecessors, (8), 4 states have return successors, (6), 5 states have call predecessors, (6), 2 states have call successors, (6) [2022-02-23 19:53:08,188 INFO L276 IsEmpty]: Start isEmpty. Operand 815 states and 1123 transitions. [2022-02-23 19:53:08,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-02-23 19:53:08,190 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 19:53:08,190 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 19:53:08,191 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-02-23 19:53:08,191 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 19:53:08,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 19:53:08,191 INFO L85 PathProgramCache]: Analyzing trace with hash 1504848646, now seen corresponding path program 1 times [2022-02-23 19:53:08,191 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 19:53:08,191 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835672867] [2022-02-23 19:53:08,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 19:53:08,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 19:53:08,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:08,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-23 19:53:08,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:08,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-23 19:53:08,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:08,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-23 19:53:08,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:08,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-02-23 19:53:08,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:08,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-02-23 19:53:08,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:08,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-23 19:53:08,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:08,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-23 19:53:08,426 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 19:53:08,426 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835672867] [2022-02-23 19:53:08,426 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1835672867] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-23 19:53:08,426 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-23 19:53:08,427 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-02-23 19:53:08,427 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667968773] [2022-02-23 19:53:08,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-23 19:53:08,427 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-02-23 19:53:08,427 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 19:53:08,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-02-23 19:53:08,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2022-02-23 19:53:08,428 INFO L87 Difference]: Start difference. First operand 815 states and 1123 transitions. Second operand has 15 states, 15 states have (on average 2.7333333333333334) internal successors, (41), 7 states have internal predecessors, (41), 3 states have call successors, (8), 8 states have call predecessors, (8), 3 states have return successors, (6), 4 states have call predecessors, (6), 2 states have call successors, (6) [2022-02-23 19:53:11,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 19:53:11,194 INFO L93 Difference]: Finished difference Result 963 states and 1369 transitions. [2022-02-23 19:53:11,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-02-23 19:53:11,195 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.7333333333333334) internal successors, (41), 7 states have internal predecessors, (41), 3 states have call successors, (8), 8 states have call predecessors, (8), 3 states have return successors, (6), 4 states have call predecessors, (6), 2 states have call successors, (6) Word has length 55 [2022-02-23 19:53:11,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 19:53:11,198 INFO L225 Difference]: With dead ends: 963 [2022-02-23 19:53:11,198 INFO L226 Difference]: Without dead ends: 926 [2022-02-23 19:53:11,199 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=62, Invalid=280, Unknown=0, NotChecked=0, Total=342 [2022-02-23 19:53:11,199 INFO L933 BasicCegarLoop]: 678 mSDtfsCounter, 389 mSDsluCounter, 2024 mSDsCounter, 0 mSdLazyCounter, 5399 mSolverCounterSat, 164 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s 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, 2.6s IncrementalHoareTripleChecker+Time [2022-02-23 19:53:11,200 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [392 Valid, 2702 Invalid, 5563 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [164 Valid, 5399 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-02-23 19:53:11,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 926 states. [2022-02-23 19:53:11,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 926 to 806. [2022-02-23 19:53:11,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 806 states, 631 states have (on average 1.3565768621236134) internal successors, (856), 644 states have internal predecessors, (856), 107 states have call successors, (107), 49 states have call predecessors, (107), 67 states have return successors, (136), 119 states have call predecessors, (136), 100 states have call successors, (136) [2022-02-23 19:53:11,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 806 states to 806 states and 1099 transitions. [2022-02-23 19:53:11,217 INFO L78 Accepts]: Start accepts. Automaton has 806 states and 1099 transitions. Word has length 55 [2022-02-23 19:53:11,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 19:53:11,217 INFO L470 AbstractCegarLoop]: Abstraction has 806 states and 1099 transitions. [2022-02-23 19:53:11,217 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.7333333333333334) internal successors, (41), 7 states have internal predecessors, (41), 3 states have call successors, (8), 8 states have call predecessors, (8), 3 states have return successors, (6), 4 states have call predecessors, (6), 2 states have call successors, (6) [2022-02-23 19:53:11,217 INFO L276 IsEmpty]: Start isEmpty. Operand 806 states and 1099 transitions. [2022-02-23 19:53:11,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-02-23 19:53:11,219 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 19:53:11,219 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 19:53:11,219 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-02-23 19:53:11,219 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 19:53:11,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 19:53:11,220 INFO L85 PathProgramCache]: Analyzing trace with hash -755849646, now seen corresponding path program 1 times [2022-02-23 19:53:11,220 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 19:53:11,220 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485313587] [2022-02-23 19:53:11,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 19:53:11,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 19:53:11,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:11,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-23 19:53:11,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:11,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-23 19:53:11,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:11,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-23 19:53:11,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:11,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-02-23 19:53:11,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:11,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-02-23 19:53:11,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:11,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-02-23 19:53:11,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:11,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-23 19:53:11,542 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 19:53:11,542 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485313587] [2022-02-23 19:53:11,542 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [485313587] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-23 19:53:11,542 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-23 19:53:11,542 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-02-23 19:53:11,543 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043679266] [2022-02-23 19:53:11,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-23 19:53:11,544 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-02-23 19:53:11,544 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 19:53:11,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-02-23 19:53:11,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2022-02-23 19:53:11,544 INFO L87 Difference]: Start difference. First operand 806 states and 1099 transitions. Second operand has 15 states, 15 states have (on average 2.8) internal successors, (42), 7 states have internal predecessors, (42), 2 states have call successors, (8), 7 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 1 states have call successors, (6) [2022-02-23 19:53:13,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 19:53:13,832 INFO L93 Difference]: Finished difference Result 939 states and 1323 transitions. [2022-02-23 19:53:13,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-02-23 19:53:13,833 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.8) internal successors, (42), 7 states have internal predecessors, (42), 2 states have call successors, (8), 7 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 1 states have call successors, (6) Word has length 56 [2022-02-23 19:53:13,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 19:53:13,836 INFO L225 Difference]: With dead ends: 939 [2022-02-23 19:53:13,836 INFO L226 Difference]: Without dead ends: 924 [2022-02-23 19:53:13,836 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2022-02-23 19:53:13,837 INFO L933 BasicCegarLoop]: 660 mSDtfsCounter, 671 mSDsluCounter, 1957 mSDsCounter, 0 mSdLazyCounter, 4337 mSolverCounterSat, 272 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s 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, 2.2s IncrementalHoareTripleChecker+Time [2022-02-23 19:53:13,837 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [673 Valid, 2617 Invalid, 4609 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [272 Valid, 4337 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-02-23 19:53:13,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 924 states. [2022-02-23 19:53:13,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 924 to 804. [2022-02-23 19:53:13,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 804 states, 630 states have (on average 1.3555555555555556) internal successors, (854), 643 states have internal predecessors, (854), 106 states have call successors, (106), 49 states have call predecessors, (106), 67 states have return successors, (135), 118 states have call predecessors, (135), 99 states have call successors, (135) [2022-02-23 19:53:13,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 804 states to 804 states and 1095 transitions. [2022-02-23 19:53:13,852 INFO L78 Accepts]: Start accepts. Automaton has 804 states and 1095 transitions. Word has length 56 [2022-02-23 19:53:13,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 19:53:13,852 INFO L470 AbstractCegarLoop]: Abstraction has 804 states and 1095 transitions. [2022-02-23 19:53:13,853 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.8) internal successors, (42), 7 states have internal predecessors, (42), 2 states have call successors, (8), 7 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 1 states have call successors, (6) [2022-02-23 19:53:13,853 INFO L276 IsEmpty]: Start isEmpty. Operand 804 states and 1095 transitions. [2022-02-23 19:53:13,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-02-23 19:53:13,854 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 19:53:13,855 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 19:53:13,855 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-02-23 19:53:13,855 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 19:53:13,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 19:53:13,855 INFO L85 PathProgramCache]: Analyzing trace with hash -303401055, now seen corresponding path program 1 times [2022-02-23 19:53:13,855 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 19:53:13,855 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416797227] [2022-02-23 19:53:13,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 19:53:13,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 19:53:13,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:13,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-23 19:53:13,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:13,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-23 19:53:13,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:13,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-23 19:53:13,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:13,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-02-23 19:53:13,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:14,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-02-23 19:53:14,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:14,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-02-23 19:53:14,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:14,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-23 19:53:14,058 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 19:53:14,058 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416797227] [2022-02-23 19:53:14,058 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1416797227] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-23 19:53:14,058 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-23 19:53:14,058 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-02-23 19:53:14,059 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102404140] [2022-02-23 19:53:14,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-23 19:53:14,059 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-02-23 19:53:14,059 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 19:53:14,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-02-23 19:53:14,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2022-02-23 19:53:14,060 INFO L87 Difference]: Start difference. First operand 804 states and 1095 transitions. Second operand has 15 states, 15 states have (on average 2.7333333333333334) internal successors, (41), 7 states have internal predecessors, (41), 2 states have call successors, (8), 7 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 1 states have call successors, (6) [2022-02-23 19:53:16,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 19:53:16,247 INFO L93 Difference]: Finished difference Result 934 states and 1316 transitions. [2022-02-23 19:53:16,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-02-23 19:53:16,247 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.7333333333333334) internal successors, (41), 7 states have internal predecessors, (41), 2 states have call successors, (8), 7 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 1 states have call successors, (6) Word has length 55 [2022-02-23 19:53:16,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 19:53:16,250 INFO L225 Difference]: With dead ends: 934 [2022-02-23 19:53:16,250 INFO L226 Difference]: Without dead ends: 919 [2022-02-23 19:53:16,250 INFO L932 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 [2022-02-23 19:53:16,251 INFO L933 BasicCegarLoop]: 657 mSDtfsCounter, 669 mSDsluCounter, 1996 mSDsCounter, 0 mSdLazyCounter, 4646 mSolverCounterSat, 270 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s 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, 2.1s IncrementalHoareTripleChecker+Time [2022-02-23 19:53:16,251 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [671 Valid, 2653 Invalid, 4916 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [270 Valid, 4646 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-02-23 19:53:16,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 919 states. [2022-02-23 19:53:16,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 919 to 799. [2022-02-23 19:53:16,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 799 states, 627 states have (on average 1.3556618819776713) internal successors, (850), 640 states have internal predecessors, (850), 105 states have call successors, (105), 49 states have call predecessors, (105), 66 states have return successors, (133), 116 states have call predecessors, (133), 98 states have call successors, (133) [2022-02-23 19:53:16,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 799 states to 799 states and 1088 transitions. [2022-02-23 19:53:16,265 INFO L78 Accepts]: Start accepts. Automaton has 799 states and 1088 transitions. Word has length 55 [2022-02-23 19:53:16,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 19:53:16,265 INFO L470 AbstractCegarLoop]: Abstraction has 799 states and 1088 transitions. [2022-02-23 19:53:16,265 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.7333333333333334) internal successors, (41), 7 states have internal predecessors, (41), 2 states have call successors, (8), 7 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 1 states have call successors, (6) [2022-02-23 19:53:16,266 INFO L276 IsEmpty]: Start isEmpty. Operand 799 states and 1088 transitions. [2022-02-23 19:53:16,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-02-23 19:53:16,274 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 19:53:16,274 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 19:53:16,274 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-02-23 19:53:16,274 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 19:53:16,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 19:53:16,275 INFO L85 PathProgramCache]: Analyzing trace with hash 1335002991, now seen corresponding path program 1 times [2022-02-23 19:53:16,275 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 19:53:16,275 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504730198] [2022-02-23 19:53:16,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 19:53:16,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 19:53:16,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:16,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-23 19:53:16,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:16,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-23 19:53:16,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:16,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-23 19:53:16,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:16,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-02-23 19:53:16,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:16,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-02-23 19:53:16,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:16,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-02-23 19:53:16,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:16,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-23 19:53:16,433 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 19:53:16,434 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504730198] [2022-02-23 19:53:16,434 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [504730198] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-23 19:53:16,434 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-23 19:53:16,434 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-02-23 19:53:16,434 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792641209] [2022-02-23 19:53:16,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-23 19:53:16,434 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-02-23 19:53:16,435 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 19:53:16,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-02-23 19:53:16,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-02-23 19:53:16,435 INFO L87 Difference]: Start difference. First operand 799 states and 1088 transitions. Second operand has 10 states, 10 states have (on average 4.2) internal successors, (42), 4 states have internal predecessors, (42), 3 states have call successors, (8), 8 states have call predecessors, (8), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-02-23 19:53:17,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 19:53:17,879 INFO L93 Difference]: Finished difference Result 941 states and 1319 transitions. [2022-02-23 19:53:17,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-02-23 19:53:17,880 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.2) internal successors, (42), 4 states have internal predecessors, (42), 3 states have call successors, (8), 8 states have call predecessors, (8), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 56 [2022-02-23 19:53:17,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 19:53:17,883 INFO L225 Difference]: With dead ends: 941 [2022-02-23 19:53:17,883 INFO L226 Difference]: Without dead ends: 941 [2022-02-23 19:53:17,883 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2022-02-23 19:53:17,883 INFO L933 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 [2022-02-23 19:53:17,884 INFO L934 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] [2022-02-23 19:53:17,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 941 states. [2022-02-23 19:53:17,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 941 to 799. [2022-02-23 19:53:17,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 799 states, 627 states have (on average 1.354066985645933) internal successors, (849), 640 states have internal predecessors, (849), 105 states have call successors, (105), 49 states have call predecessors, (105), 66 states have return successors, (133), 116 states have call predecessors, (133), 98 states have call successors, (133) [2022-02-23 19:53:17,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 799 states to 799 states and 1087 transitions. [2022-02-23 19:53:17,910 INFO L78 Accepts]: Start accepts. Automaton has 799 states and 1087 transitions. Word has length 56 [2022-02-23 19:53:17,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 19:53:17,910 INFO L470 AbstractCegarLoop]: Abstraction has 799 states and 1087 transitions. [2022-02-23 19:53:17,911 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.2) internal successors, (42), 4 states have internal predecessors, (42), 3 states have call successors, (8), 8 states have call predecessors, (8), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-02-23 19:53:17,911 INFO L276 IsEmpty]: Start isEmpty. Operand 799 states and 1087 transitions. [2022-02-23 19:53:17,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-02-23 19:53:17,913 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 19:53:17,913 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 19:53:17,913 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-02-23 19:53:17,913 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 19:53:17,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 19:53:17,914 INFO L85 PathProgramCache]: Analyzing trace with hash 1948386428, now seen corresponding path program 1 times [2022-02-23 19:53:17,914 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 19:53:17,914 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167351547] [2022-02-23 19:53:17,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 19:53:17,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 19:53:17,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:17,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-23 19:53:17,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:18,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-23 19:53:18,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:18,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-23 19:53:18,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:18,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-02-23 19:53:18,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:18,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-02-23 19:53:18,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:18,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-23 19:53:18,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:18,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-23 19:53:18,062 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 19:53:18,062 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167351547] [2022-02-23 19:53:18,062 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1167351547] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-23 19:53:18,062 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-23 19:53:18,062 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-02-23 19:53:18,062 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976670787] [2022-02-23 19:53:18,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-23 19:53:18,063 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-23 19:53:18,063 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 19:53:18,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-23 19:53:18,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-02-23 19:53:18,063 INFO L87 Difference]: Start difference. First operand 799 states and 1087 transitions. Second operand has 8 states, 8 states have (on average 5.375) internal successors, (43), 3 states have internal predecessors, (43), 3 states have call successors, (12), 8 states have call predecessors, (12), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2022-02-23 19:53:19,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 19:53:19,514 INFO L93 Difference]: Finished difference Result 1023 states and 1421 transitions. [2022-02-23 19:53:19,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-02-23 19:53:19,515 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 3 states have internal predecessors, (43), 3 states have call successors, (12), 8 states have call predecessors, (12), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) Word has length 61 [2022-02-23 19:53:19,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 19:53:19,517 INFO L225 Difference]: With dead ends: 1023 [2022-02-23 19:53:19,517 INFO L226 Difference]: Without dead ends: 1023 [2022-02-23 19:53:19,517 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 3 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2022-02-23 19:53:19,518 INFO L933 BasicCegarLoop]: 663 mSDtfsCounter, 690 mSDsluCounter, 578 mSDsCounter, 0 mSdLazyCounter, 1338 mSolverCounterSat, 229 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s 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, 1.4s IncrementalHoareTripleChecker+Time [2022-02-23 19:53:19,518 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [712 Valid, 1241 Invalid, 1567 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [229 Valid, 1338 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-02-23 19:53:19,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1023 states. [2022-02-23 19:53:19,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1023 to 840. [2022-02-23 19:53:19,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 840 states, 660 states have (on average 1.3424242424242425) internal successors, (886), 672 states have internal predecessors, (886), 106 states have call successors, (106), 53 states have call predecessors, (106), 73 states have return successors, (135), 121 states have call predecessors, (135), 100 states have call successors, (135) [2022-02-23 19:53:19,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 840 states to 840 states and 1127 transitions. [2022-02-23 19:53:19,532 INFO L78 Accepts]: Start accepts. Automaton has 840 states and 1127 transitions. Word has length 61 [2022-02-23 19:53:19,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 19:53:19,532 INFO L470 AbstractCegarLoop]: Abstraction has 840 states and 1127 transitions. [2022-02-23 19:53:19,533 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 3 states have internal predecessors, (43), 3 states have call successors, (12), 8 states have call predecessors, (12), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2022-02-23 19:53:19,533 INFO L276 IsEmpty]: Start isEmpty. Operand 840 states and 1127 transitions. [2022-02-23 19:53:19,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-02-23 19:53:19,536 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 19:53:19,536 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 19:53:19,536 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-02-23 19:53:19,536 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 19:53:19,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 19:53:19,537 INFO L85 PathProgramCache]: Analyzing trace with hash -1337798748, now seen corresponding path program 1 times [2022-02-23 19:53:19,537 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 19:53:19,537 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834221908] [2022-02-23 19:53:19,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 19:53:19,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 19:53:19,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:19,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-23 19:53:19,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:19,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-23 19:53:19,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:19,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-23 19:53:19,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:19,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-02-23 19:53:19,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:19,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-23 19:53:19,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:19,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-02-23 19:53:19,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:19,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-02-23 19:53:19,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:19,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-23 19:53:19,878 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 19:53:19,878 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1834221908] [2022-02-23 19:53:19,878 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1834221908] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-23 19:53:19,878 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-23 19:53:19,878 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-02-23 19:53:19,878 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563206106] [2022-02-23 19:53:19,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-23 19:53:19,879 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-02-23 19:53:19,879 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 19:53:19,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-02-23 19:53:19,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=327, Unknown=0, NotChecked=0, Total=380 [2022-02-23 19:53:19,880 INFO L87 Difference]: Start difference. First operand 840 states and 1127 transitions. Second operand has 20 states, 19 states have (on average 2.4210526315789473) internal successors, (46), 10 states have internal predecessors, (46), 4 states have call successors, (9), 9 states have call predecessors, (9), 4 states have return successors, (7), 5 states have call predecessors, (7), 3 states have call successors, (7) [2022-02-23 19:53:22,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 19:53:22,745 INFO L93 Difference]: Finished difference Result 1005 states and 1396 transitions. [2022-02-23 19:53:22,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-02-23 19:53:22,747 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 2.4210526315789473) internal successors, (46), 10 states have internal predecessors, (46), 4 states have call successors, (9), 9 states have call predecessors, (9), 4 states have return successors, (7), 5 states have call predecessors, (7), 3 states have call successors, (7) Word has length 62 [2022-02-23 19:53:22,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 19:53:22,751 INFO L225 Difference]: With dead ends: 1005 [2022-02-23 19:53:22,751 INFO L226 Difference]: Without dead ends: 984 [2022-02-23 19:53:22,751 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=99, Invalid=603, Unknown=0, NotChecked=0, Total=702 [2022-02-23 19:53:22,751 INFO L933 BasicCegarLoop]: 655 mSDtfsCounter, 1023 mSDsluCounter, 2575 mSDsCounter, 0 mSdLazyCounter, 6165 mSolverCounterSat, 430 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s 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, 2.6s IncrementalHoareTripleChecker+Time [2022-02-23 19:53:22,752 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1029 Valid, 3230 Invalid, 6595 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [430 Valid, 6165 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-02-23 19:53:22,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 984 states. [2022-02-23 19:53:22,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 984 to 838. [2022-02-23 19:53:22,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 838 states, 659 states have (on average 1.3414264036418817) internal successors, (884), 671 states have internal predecessors, (884), 105 states have call successors, (105), 53 states have call predecessors, (105), 73 states have return successors, (134), 120 states have call predecessors, (134), 99 states have call successors, (134) [2022-02-23 19:53:22,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 838 states to 838 states and 1123 transitions. [2022-02-23 19:53:22,765 INFO L78 Accepts]: Start accepts. Automaton has 838 states and 1123 transitions. Word has length 62 [2022-02-23 19:53:22,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 19:53:22,766 INFO L470 AbstractCegarLoop]: Abstraction has 838 states and 1123 transitions. [2022-02-23 19:53:22,766 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 2.4210526315789473) internal successors, (46), 10 states have internal predecessors, (46), 4 states have call successors, (9), 9 states have call predecessors, (9), 4 states have return successors, (7), 5 states have call predecessors, (7), 3 states have call successors, (7) [2022-02-23 19:53:22,766 INFO L276 IsEmpty]: Start isEmpty. Operand 838 states and 1123 transitions. [2022-02-23 19:53:22,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-02-23 19:53:22,767 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 19:53:22,767 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 19:53:22,767 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-02-23 19:53:22,768 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 19:53:22,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 19:53:22,768 INFO L85 PathProgramCache]: Analyzing trace with hash 1214008405, now seen corresponding path program 1 times [2022-02-23 19:53:22,768 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 19:53:22,768 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943349541] [2022-02-23 19:53:22,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 19:53:22,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 19:53:22,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:22,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-23 19:53:22,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:22,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-23 19:53:22,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:22,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-23 19:53:22,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:22,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-02-23 19:53:22,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:22,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-23 19:53:22,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:23,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-02-23 19:53:23,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:23,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-02-23 19:53:23,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:23,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-23 19:53:23,093 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 19:53:23,093 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943349541] [2022-02-23 19:53:23,093 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [943349541] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-23 19:53:23,093 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-23 19:53:23,094 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-02-23 19:53:23,094 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275455741] [2022-02-23 19:53:23,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-23 19:53:23,094 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-02-23 19:53:23,094 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 19:53:23,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-02-23 19:53:23,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=327, Unknown=0, NotChecked=0, Total=380 [2022-02-23 19:53:23,095 INFO L87 Difference]: Start difference. First operand 838 states and 1123 transitions. Second operand has 20 states, 19 states have (on average 2.263157894736842) internal successors, (43), 10 states have internal predecessors, (43), 4 states have call successors, (9), 9 states have call predecessors, (9), 4 states have return successors, (7), 5 states have call predecessors, (7), 3 states have call successors, (7) [2022-02-23 19:53:26,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 19:53:26,083 INFO L93 Difference]: Finished difference Result 1003 states and 1392 transitions. [2022-02-23 19:53:26,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-02-23 19:53:26,084 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 2.263157894736842) internal successors, (43), 10 states have internal predecessors, (43), 4 states have call successors, (9), 9 states have call predecessors, (9), 4 states have return successors, (7), 5 states have call predecessors, (7), 3 states have call successors, (7) Word has length 59 [2022-02-23 19:53:26,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 19:53:26,086 INFO L225 Difference]: With dead ends: 1003 [2022-02-23 19:53:26,086 INFO L226 Difference]: Without dead ends: 980 [2022-02-23 19:53:26,086 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=99, Invalid=603, Unknown=0, NotChecked=0, Total=702 [2022-02-23 19:53:26,087 INFO L933 BasicCegarLoop]: 634 mSDtfsCounter, 1005 mSDsluCounter, 2803 mSDsCounter, 0 mSdLazyCounter, 6736 mSolverCounterSat, 420 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s 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, 2.8s IncrementalHoareTripleChecker+Time [2022-02-23 19:53:26,087 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1009 Valid, 3437 Invalid, 7156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [420 Valid, 6736 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-02-23 19:53:26,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 980 states. [2022-02-23 19:53:26,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 980 to 837. [2022-02-23 19:53:26,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 837 states, 658 states have (on average 1.3267477203647415) internal successors, (873), 670 states have internal predecessors, (873), 105 states have call successors, (105), 53 states have call predecessors, (105), 73 states have return successors, (134), 120 states have call predecessors, (134), 99 states have call successors, (134) [2022-02-23 19:53:26,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 837 states to 837 states and 1112 transitions. [2022-02-23 19:53:26,101 INFO L78 Accepts]: Start accepts. Automaton has 837 states and 1112 transitions. Word has length 59 [2022-02-23 19:53:26,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 19:53:26,101 INFO L470 AbstractCegarLoop]: Abstraction has 837 states and 1112 transitions. [2022-02-23 19:53:26,101 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 2.263157894736842) internal successors, (43), 10 states have internal predecessors, (43), 4 states have call successors, (9), 9 states have call predecessors, (9), 4 states have return successors, (7), 5 states have call predecessors, (7), 3 states have call successors, (7) [2022-02-23 19:53:26,101 INFO L276 IsEmpty]: Start isEmpty. Operand 837 states and 1112 transitions. [2022-02-23 19:53:26,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-02-23 19:53:26,103 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 19:53:26,103 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 19:53:26,103 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-02-23 19:53:26,103 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 19:53:26,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 19:53:26,103 INFO L85 PathProgramCache]: Analyzing trace with hash -55485367, now seen corresponding path program 1 times [2022-02-23 19:53:26,103 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 19:53:26,103 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584636106] [2022-02-23 19:53:26,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 19:53:26,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 19:53:26,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:26,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-23 19:53:26,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:26,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-23 19:53:26,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:26,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-23 19:53:26,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:26,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-02-23 19:53:26,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:26,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-23 19:53:26,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:26,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-02-23 19:53:26,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:26,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-23 19:53:26,409 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 19:53:26,409 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584636106] [2022-02-23 19:53:26,409 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1584636106] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-23 19:53:26,409 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-23 19:53:26,409 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-02-23 19:53:26,409 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714580266] [2022-02-23 19:53:26,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-23 19:53:26,410 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-02-23 19:53:26,410 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 19:53:26,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-02-23 19:53:26,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2022-02-23 19:53:26,410 INFO L87 Difference]: Start difference. First operand 837 states and 1112 transitions. Second operand has 16 states, 16 states have (on average 2.75) internal successors, (44), 8 states have internal predecessors, (44), 2 states have call successors, (8), 7 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 1 states have call successors, (6) [2022-02-23 19:53:28,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 19:53:28,996 INFO L93 Difference]: Finished difference Result 992 states and 1366 transitions. [2022-02-23 19:53:28,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-02-23 19:53:28,996 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.75) internal successors, (44), 8 states have internal predecessors, (44), 2 states have call successors, (8), 7 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 1 states have call successors, (6) Word has length 58 [2022-02-23 19:53:28,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 19:53:28,999 INFO L225 Difference]: With dead ends: 992 [2022-02-23 19:53:28,999 INFO L226 Difference]: Without dead ends: 975 [2022-02-23 19:53:28,999 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2022-02-23 19:53:29,000 INFO L933 BasicCegarLoop]: 649 mSDtfsCounter, 1249 mSDsluCounter, 2303 mSDsCounter, 0 mSdLazyCounter, 5378 mSolverCounterSat, 517 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s 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, 2.5s IncrementalHoareTripleChecker+Time [2022-02-23 19:53:29,000 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1251 Valid, 2952 Invalid, 5895 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [517 Valid, 5378 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-02-23 19:53:29,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 975 states. [2022-02-23 19:53:29,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 975 to 834. [2022-02-23 19:53:29,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 834 states, 656 states have (on average 1.326219512195122) internal successors, (870), 668 states have internal predecessors, (870), 104 states have call successors, (104), 53 states have call predecessors, (104), 73 states have return successors, (133), 119 states have call predecessors, (133), 98 states have call successors, (133) [2022-02-23 19:53:29,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 834 states to 834 states and 1107 transitions. [2022-02-23 19:53:29,012 INFO L78 Accepts]: Start accepts. Automaton has 834 states and 1107 transitions. Word has length 58 [2022-02-23 19:53:29,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 19:53:29,013 INFO L470 AbstractCegarLoop]: Abstraction has 834 states and 1107 transitions. [2022-02-23 19:53:29,013 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.75) internal successors, (44), 8 states have internal predecessors, (44), 2 states have call successors, (8), 7 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 1 states have call successors, (6) [2022-02-23 19:53:29,013 INFO L276 IsEmpty]: Start isEmpty. Operand 834 states and 1107 transitions. [2022-02-23 19:53:29,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-02-23 19:53:29,015 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 19:53:29,015 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 19:53:29,015 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-02-23 19:53:29,015 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 19:53:29,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 19:53:29,015 INFO L85 PathProgramCache]: Analyzing trace with hash -57775299, now seen corresponding path program 1 times [2022-02-23 19:53:29,016 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 19:53:29,016 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388862733] [2022-02-23 19:53:29,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 19:53:29,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 19:53:29,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:29,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-23 19:53:29,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:29,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-23 19:53:29,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:29,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-23 19:53:29,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:29,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-02-23 19:53:29,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:29,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-02-23 19:53:29,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:29,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-23 19:53:29,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:29,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-02-23 19:53:29,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:29,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-23 19:53:29,189 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 19:53:29,189 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388862733] [2022-02-23 19:53:29,189 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1388862733] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-23 19:53:29,189 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-23 19:53:29,189 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-02-23 19:53:29,190 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292366063] [2022-02-23 19:53:29,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-23 19:53:29,190 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-02-23 19:53:29,190 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 19:53:29,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-02-23 19:53:29,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-02-23 19:53:29,190 INFO L87 Difference]: Start difference. First operand 834 states and 1107 transitions. Second operand has 11 states, 11 states have (on average 4.0) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-02-23 19:53:30,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 19:53:30,741 INFO L93 Difference]: Finished difference Result 1036 states and 1451 transitions. [2022-02-23 19:53:30,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-02-23 19:53:30,743 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.0) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 60 [2022-02-23 19:53:30,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 19:53:30,746 INFO L225 Difference]: With dead ends: 1036 [2022-02-23 19:53:30,746 INFO L226 Difference]: Without dead ends: 1036 [2022-02-23 19:53:30,746 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2022-02-23 19:53:30,747 INFO L933 BasicCegarLoop]: 628 mSDtfsCounter, 1326 mSDsluCounter, 1002 mSDsCounter, 0 mSdLazyCounter, 1658 mSolverCounterSat, 578 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s 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, 1.4s IncrementalHoareTripleChecker+Time [2022-02-23 19:53:30,747 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1328 Valid, 1630 Invalid, 2236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [578 Valid, 1658 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-02-23 19:53:30,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1036 states. [2022-02-23 19:53:30,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1036 to 841. [2022-02-23 19:53:30,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 841 states, 661 states have (on average 1.3267776096822996) internal successors, (877), 674 states have internal predecessors, (877), 105 states have call successors, (105), 53 states have call predecessors, (105), 74 states have return successors, (140), 120 states have call predecessors, (140), 99 states have call successors, (140) [2022-02-23 19:53:30,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 841 states to 841 states and 1122 transitions. [2022-02-23 19:53:30,763 INFO L78 Accepts]: Start accepts. Automaton has 841 states and 1122 transitions. Word has length 60 [2022-02-23 19:53:30,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 19:53:30,763 INFO L470 AbstractCegarLoop]: Abstraction has 841 states and 1122 transitions. [2022-02-23 19:53:30,763 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.0) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-02-23 19:53:30,763 INFO L276 IsEmpty]: Start isEmpty. Operand 841 states and 1122 transitions. [2022-02-23 19:53:30,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-02-23 19:53:30,765 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 19:53:30,765 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 19:53:30,765 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-02-23 19:53:30,765 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 19:53:30,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 19:53:30,766 INFO L85 PathProgramCache]: Analyzing trace with hash -2067879140, now seen corresponding path program 1 times [2022-02-23 19:53:30,766 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 19:53:30,766 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376327873] [2022-02-23 19:53:30,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 19:53:30,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 19:53:30,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:30,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-23 19:53:30,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:30,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-23 19:53:30,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:30,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-23 19:53:30,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:30,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-02-23 19:53:30,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:30,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-02-23 19:53:30,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:30,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-23 19:53:30,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:30,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-02-23 19:53:30,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:31,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-23 19:53:31,001 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 19:53:31,001 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376327873] [2022-02-23 19:53:31,001 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1376327873] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-23 19:53:31,001 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-23 19:53:31,001 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-02-23 19:53:31,001 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652067449] [2022-02-23 19:53:31,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-23 19:53:31,002 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-02-23 19:53:31,002 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 19:53:31,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-02-23 19:53:31,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2022-02-23 19:53:31,002 INFO L87 Difference]: Start difference. First operand 841 states and 1122 transitions. Second operand has 16 states, 16 states have (on average 2.75) internal successors, (44), 7 states have internal predecessors, (44), 3 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 4 states have call predecessors, (7), 2 states have call successors, (7) [2022-02-23 19:53:32,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 19:53:32,847 INFO L93 Difference]: Finished difference Result 1005 states and 1397 transitions. [2022-02-23 19:53:32,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-02-23 19:53:32,848 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.75) internal successors, (44), 7 states have internal predecessors, (44), 3 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 4 states have call predecessors, (7), 2 states have call successors, (7) Word has length 60 [2022-02-23 19:53:32,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 19:53:32,850 INFO L225 Difference]: With dead ends: 1005 [2022-02-23 19:53:32,850 INFO L226 Difference]: Without dead ends: 983 [2022-02-23 19:53:32,850 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2022-02-23 19:53:32,850 INFO L933 BasicCegarLoop]: 633 mSDtfsCounter, 1277 mSDsluCounter, 2021 mSDsCounter, 0 mSdLazyCounter, 3767 mSolverCounterSat, 525 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s 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, 1.8s IncrementalHoareTripleChecker+Time [2022-02-23 19:53:32,851 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1280 Valid, 2654 Invalid, 4292 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [525 Valid, 3767 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-02-23 19:53:32,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 983 states. [2022-02-23 19:53:32,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 983 to 839. [2022-02-23 19:53:32,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 839 states, 660 states have (on average 1.3257575757575757) internal successors, (875), 673 states have internal predecessors, (875), 104 states have call successors, (104), 53 states have call predecessors, (104), 74 states have return successors, (139), 119 states have call predecessors, (139), 98 states have call successors, (139) [2022-02-23 19:53:32,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 839 states to 839 states and 1118 transitions. [2022-02-23 19:53:32,863 INFO L78 Accepts]: Start accepts. Automaton has 839 states and 1118 transitions. Word has length 60 [2022-02-23 19:53:32,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 19:53:32,863 INFO L470 AbstractCegarLoop]: Abstraction has 839 states and 1118 transitions. [2022-02-23 19:53:32,864 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.75) internal successors, (44), 7 states have internal predecessors, (44), 3 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 4 states have call predecessors, (7), 2 states have call successors, (7) [2022-02-23 19:53:32,864 INFO L276 IsEmpty]: Start isEmpty. Operand 839 states and 1118 transitions. [2022-02-23 19:53:32,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-02-23 19:53:32,865 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 19:53:32,865 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 19:53:32,866 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-02-23 19:53:32,866 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 19:53:32,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 19:53:32,866 INFO L85 PathProgramCache]: Analyzing trace with hash 1557615113, now seen corresponding path program 1 times [2022-02-23 19:53:32,866 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 19:53:32,866 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650645948] [2022-02-23 19:53:32,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 19:53:32,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 19:53:32,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:32,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-23 19:53:32,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:32,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-23 19:53:32,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:32,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-23 19:53:32,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:32,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-02-23 19:53:33,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:33,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-02-23 19:53:33,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:33,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-02-23 19:53:33,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:33,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-23 19:53:33,119 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 19:53:33,119 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650645948] [2022-02-23 19:53:33,119 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [650645948] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-23 19:53:33,119 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-23 19:53:33,119 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-02-23 19:53:33,119 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406696893] [2022-02-23 19:53:33,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-23 19:53:33,120 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-02-23 19:53:33,120 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 19:53:33,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-02-23 19:53:33,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2022-02-23 19:53:33,120 INFO L87 Difference]: Start difference. First operand 839 states and 1118 transitions. Second operand has 16 states, 16 states have (on average 2.8125) internal successors, (45), 8 states have internal predecessors, (45), 3 states have call successors, (8), 8 states have call predecessors, (8), 3 states have return successors, (6), 4 states have call predecessors, (6), 2 states have call successors, (6) [2022-02-23 19:53:35,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 19:53:35,670 INFO L93 Difference]: Finished difference Result 1004 states and 1391 transitions. [2022-02-23 19:53:35,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-02-23 19:53:35,671 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.8125) internal successors, (45), 8 states have internal predecessors, (45), 3 states have call successors, (8), 8 states have call predecessors, (8), 3 states have return successors, (6), 4 states have call predecessors, (6), 2 states have call successors, (6) Word has length 59 [2022-02-23 19:53:35,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 19:53:35,673 INFO L225 Difference]: With dead ends: 1004 [2022-02-23 19:53:35,673 INFO L226 Difference]: Without dead ends: 968 [2022-02-23 19:53:35,674 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=92, Invalid=414, Unknown=0, NotChecked=0, Total=506 [2022-02-23 19:53:35,674 INFO L933 BasicCegarLoop]: 620 mSDtfsCounter, 660 mSDsluCounter, 2156 mSDsCounter, 0 mSdLazyCounter, 4989 mSolverCounterSat, 279 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s 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, 2.3s IncrementalHoareTripleChecker+Time [2022-02-23 19:53:35,674 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [664 Valid, 2776 Invalid, 5268 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [279 Valid, 4989 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-02-23 19:53:35,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 968 states. [2022-02-23 19:53:35,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 968 to 827. [2022-02-23 19:53:35,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 827 states, 651 states have (on average 1.3210445468509984) internal successors, (860), 664 states have internal predecessors, (860), 101 states have call successors, (101), 53 states have call predecessors, (101), 74 states have return successors, (136), 116 states have call predecessors, (136), 95 states have call successors, (136) [2022-02-23 19:53:35,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 827 states to 827 states and 1097 transitions. [2022-02-23 19:53:35,687 INFO L78 Accepts]: Start accepts. Automaton has 827 states and 1097 transitions. Word has length 59 [2022-02-23 19:53:35,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 19:53:35,687 INFO L470 AbstractCegarLoop]: Abstraction has 827 states and 1097 transitions. [2022-02-23 19:53:35,687 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.8125) internal successors, (45), 8 states have internal predecessors, (45), 3 states have call successors, (8), 8 states have call predecessors, (8), 3 states have return successors, (6), 4 states have call predecessors, (6), 2 states have call successors, (6) [2022-02-23 19:53:35,688 INFO L276 IsEmpty]: Start isEmpty. Operand 827 states and 1097 transitions. [2022-02-23 19:53:35,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-02-23 19:53:35,689 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 19:53:35,689 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 19:53:35,690 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-02-23 19:53:35,690 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 19:53:35,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 19:53:35,690 INFO L85 PathProgramCache]: Analyzing trace with hash -1192878684, now seen corresponding path program 1 times [2022-02-23 19:53:35,690 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 19:53:35,690 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881297939] [2022-02-23 19:53:35,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 19:53:35,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 19:53:35,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:35,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-23 19:53:35,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:35,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-23 19:53:35,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:35,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-23 19:53:35,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:35,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-02-23 19:53:35,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:35,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-02-23 19:53:35,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:35,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-23 19:53:35,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:35,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-02-23 19:53:35,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:35,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-23 19:53:35,884 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 19:53:35,884 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881297939] [2022-02-23 19:53:35,884 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [881297939] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-23 19:53:35,884 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-23 19:53:35,884 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-02-23 19:53:35,884 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305951717] [2022-02-23 19:53:35,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-23 19:53:35,885 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-02-23 19:53:35,885 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 19:53:35,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-02-23 19:53:35,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2022-02-23 19:53:35,885 INFO L87 Difference]: Start difference. First operand 827 states and 1097 transitions. Second operand has 12 states, 12 states have (on average 3.75) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-02-23 19:53:37,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 19:53:37,532 INFO L93 Difference]: Finished difference Result 984 states and 1386 transitions. [2022-02-23 19:53:37,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-02-23 19:53:37,532 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.75) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 61 [2022-02-23 19:53:37,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 19:53:37,534 INFO L225 Difference]: With dead ends: 984 [2022-02-23 19:53:37,534 INFO L226 Difference]: Without dead ends: 982 [2022-02-23 19:53:37,535 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2022-02-23 19:53:37,535 INFO L933 BasicCegarLoop]: 609 mSDtfsCounter, 350 mSDsluCounter, 1164 mSDsCounter, 0 mSdLazyCounter, 2141 mSolverCounterSat, 149 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s 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, 1.5s IncrementalHoareTripleChecker+Time [2022-02-23 19:53:37,539 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [352 Valid, 1773 Invalid, 2290 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [149 Valid, 2141 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-02-23 19:53:37,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 982 states. [2022-02-23 19:53:37,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 982 to 831. [2022-02-23 19:53:37,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 831 states, 653 states have (on average 1.3200612557427258) internal successors, (862), 668 states have internal predecessors, (862), 101 states have call successors, (101), 53 states have call predecessors, (101), 76 states have return successors, (152), 116 states have call predecessors, (152), 95 states have call successors, (152) [2022-02-23 19:53:37,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 831 states to 831 states and 1115 transitions. [2022-02-23 19:53:37,555 INFO L78 Accepts]: Start accepts. Automaton has 831 states and 1115 transitions. Word has length 61 [2022-02-23 19:53:37,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 19:53:37,556 INFO L470 AbstractCegarLoop]: Abstraction has 831 states and 1115 transitions. [2022-02-23 19:53:37,556 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.75) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-02-23 19:53:37,556 INFO L276 IsEmpty]: Start isEmpty. Operand 831 states and 1115 transitions. [2022-02-23 19:53:37,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-02-23 19:53:37,561 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 19:53:37,561 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 19:53:37,562 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-02-23 19:53:37,562 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 19:53:37,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 19:53:37,562 INFO L85 PathProgramCache]: Analyzing trace with hash 440130742, now seen corresponding path program 1 times [2022-02-23 19:53:37,562 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 19:53:37,562 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579060147] [2022-02-23 19:53:37,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 19:53:37,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 19:53:37,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:37,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-23 19:53:37,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:37,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-23 19:53:37,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:37,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-23 19:53:37,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:37,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-02-23 19:53:37,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:37,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-02-23 19:53:37,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:37,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-02-23 19:53:37,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:37,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-23 19:53:37,734 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 19:53:37,735 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579060147] [2022-02-23 19:53:37,735 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [579060147] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-23 19:53:37,735 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-23 19:53:37,735 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-02-23 19:53:37,735 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254726314] [2022-02-23 19:53:37,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-23 19:53:37,735 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-02-23 19:53:37,735 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 19:53:37,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-02-23 19:53:37,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2022-02-23 19:53:37,736 INFO L87 Difference]: Start difference. First operand 831 states and 1115 transitions. Second operand has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (8), 8 states have call predecessors, (8), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2022-02-23 19:53:39,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 19:53:39,183 INFO L93 Difference]: Finished difference Result 974 states and 1367 transitions. [2022-02-23 19:53:39,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-02-23 19:53:39,184 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (8), 8 states have call predecessors, (8), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) Word has length 60 [2022-02-23 19:53:39,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 19:53:39,186 INFO L225 Difference]: With dead ends: 974 [2022-02-23 19:53:39,186 INFO L226 Difference]: Without dead ends: 974 [2022-02-23 19:53:39,186 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2022-02-23 19:53:39,187 INFO L933 BasicCegarLoop]: 607 mSDtfsCounter, 349 mSDsluCounter, 904 mSDsCounter, 0 mSdLazyCounter, 2010 mSolverCounterSat, 133 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s 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, 1.4s IncrementalHoareTripleChecker+Time [2022-02-23 19:53:39,187 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [351 Valid, 1511 Invalid, 2143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [133 Valid, 2010 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-02-23 19:53:39,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 974 states. [2022-02-23 19:53:39,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 974 to 831. [2022-02-23 19:53:39,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 831 states, 653 states have (on average 1.318529862174579) internal successors, (861), 668 states have internal predecessors, (861), 101 states have call successors, (101), 53 states have call predecessors, (101), 76 states have return successors, (152), 116 states have call predecessors, (152), 95 states have call successors, (152) [2022-02-23 19:53:39,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 831 states to 831 states and 1114 transitions. [2022-02-23 19:53:39,200 INFO L78 Accepts]: Start accepts. Automaton has 831 states and 1114 transitions. Word has length 60 [2022-02-23 19:53:39,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 19:53:39,201 INFO L470 AbstractCegarLoop]: Abstraction has 831 states and 1114 transitions. [2022-02-23 19:53:39,201 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (8), 8 states have call predecessors, (8), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2022-02-23 19:53:39,201 INFO L276 IsEmpty]: Start isEmpty. Operand 831 states and 1114 transitions. [2022-02-23 19:53:39,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-02-23 19:53:39,203 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 19:53:39,203 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 19:53:39,203 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-02-23 19:53:39,203 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 19:53:39,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 19:53:39,203 INFO L85 PathProgramCache]: Analyzing trace with hash 185394197, now seen corresponding path program 1 times [2022-02-23 19:53:39,203 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 19:53:39,204 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329316164] [2022-02-23 19:53:39,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 19:53:39,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 19:53:39,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:39,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-23 19:53:39,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:39,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-23 19:53:39,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:39,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-23 19:53:39,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:39,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-02-23 19:53:39,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:39,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-02-23 19:53:39,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:39,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-02-23 19:53:39,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:39,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-23 19:53:39,468 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 19:53:39,469 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329316164] [2022-02-23 19:53:39,469 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1329316164] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-23 19:53:39,469 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-23 19:53:39,469 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-02-23 19:53:39,469 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618100095] [2022-02-23 19:53:39,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-23 19:53:39,469 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-02-23 19:53:39,469 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 19:53:39,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-02-23 19:53:39,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2022-02-23 19:53:39,470 INFO L87 Difference]: Start difference. First operand 831 states and 1114 transitions. Second operand has 16 states, 16 states have (on average 2.875) internal successors, (46), 8 states have internal predecessors, (46), 3 states have call successors, (8), 8 states have call predecessors, (8), 3 states have return successors, (6), 4 states have call predecessors, (6), 2 states have call successors, (6) [2022-02-23 19:53:41,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 19:53:41,542 INFO L93 Difference]: Finished difference Result 1010 states and 1414 transitions. [2022-02-23 19:53:41,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-02-23 19:53:41,543 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.875) internal successors, (46), 8 states have internal predecessors, (46), 3 states have call successors, (8), 8 states have call predecessors, (8), 3 states have return successors, (6), 4 states have call predecessors, (6), 2 states have call successors, (6) Word has length 60 [2022-02-23 19:53:41,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 19:53:41,545 INFO L225 Difference]: With dead ends: 1010 [2022-02-23 19:53:41,545 INFO L226 Difference]: Without dead ends: 961 [2022-02-23 19:53:41,546 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=92, Invalid=414, Unknown=0, NotChecked=0, Total=506 [2022-02-23 19:53:41,546 INFO L933 BasicCegarLoop]: 608 mSDtfsCounter, 1261 mSDsluCounter, 1912 mSDsCounter, 0 mSdLazyCounter, 4078 mSolverCounterSat, 513 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s 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, 1.9s IncrementalHoareTripleChecker+Time [2022-02-23 19:53:41,546 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1266 Valid, 2520 Invalid, 4591 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [513 Valid, 4078 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-02-23 19:53:41,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 961 states. [2022-02-23 19:53:41,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 961 to 823. [2022-02-23 19:53:41,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 823 states, 647 states have (on average 1.3137557959814528) internal successors, (850), 662 states have internal predecessors, (850), 99 states have call successors, (99), 53 states have call predecessors, (99), 76 states have return successors, (150), 114 states have call predecessors, (150), 93 states have call successors, (150) [2022-02-23 19:53:41,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 823 states to 823 states and 1099 transitions. [2022-02-23 19:53:41,559 INFO L78 Accepts]: Start accepts. Automaton has 823 states and 1099 transitions. Word has length 60 [2022-02-23 19:53:41,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 19:53:41,559 INFO L470 AbstractCegarLoop]: Abstraction has 823 states and 1099 transitions. [2022-02-23 19:53:41,559 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.875) internal successors, (46), 8 states have internal predecessors, (46), 3 states have call successors, (8), 8 states have call predecessors, (8), 3 states have return successors, (6), 4 states have call predecessors, (6), 2 states have call successors, (6) [2022-02-23 19:53:41,559 INFO L276 IsEmpty]: Start isEmpty. Operand 823 states and 1099 transitions. [2022-02-23 19:53:41,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-02-23 19:53:41,561 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 19:53:41,561 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 19:53:41,561 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-02-23 19:53:41,561 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 19:53:41,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 19:53:41,561 INFO L85 PathProgramCache]: Analyzing trace with hash -1158774888, now seen corresponding path program 1 times [2022-02-23 19:53:41,561 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 19:53:41,562 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595252588] [2022-02-23 19:53:41,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 19:53:41,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 19:53:41,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:41,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-23 19:53:41,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:41,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-23 19:53:41,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:41,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-23 19:53:41,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:41,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-02-23 19:53:41,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:41,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-02-23 19:53:41,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:41,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-23 19:53:41,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:41,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-02-23 19:53:41,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:41,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-23 19:53:41,822 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 19:53:41,822 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595252588] [2022-02-23 19:53:41,823 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1595252588] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-23 19:53:41,823 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-23 19:53:41,823 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-02-23 19:53:41,823 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433769311] [2022-02-23 19:53:41,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-23 19:53:41,824 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-02-23 19:53:41,824 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 19:53:41,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-02-23 19:53:41,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=296, Unknown=0, NotChecked=0, Total=342 [2022-02-23 19:53:41,825 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) [2022-02-23 19:53:44,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 19:53:44,120 INFO L93 Difference]: Finished difference Result 975 states and 1357 transitions. [2022-02-23 19:53:44,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-02-23 19:53:44,121 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 9 states have internal predecessors, (47), 2 states have call successors, (9), 8 states have call predecessors, (9), 5 states have return successors, (7), 5 states have call predecessors, (7), 1 states have call successors, (7) Word has length 63 [2022-02-23 19:53:44,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 19:53:44,123 INFO L225 Difference]: With dead ends: 975 [2022-02-23 19:53:44,123 INFO L226 Difference]: Without dead ends: 956 [2022-02-23 19:53:44,123 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=61, Invalid=401, Unknown=0, NotChecked=0, Total=462 [2022-02-23 19:53:44,124 INFO L933 BasicCegarLoop]: 597 mSDtfsCounter, 1168 mSDsluCounter, 2591 mSDsCounter, 0 mSdLazyCounter, 5487 mSolverCounterSat, 479 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s 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, 2.2s IncrementalHoareTripleChecker+Time [2022-02-23 19:53:44,124 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1170 Valid, 3188 Invalid, 5966 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [479 Valid, 5487 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-02-23 19:53:44,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 956 states. [2022-02-23 19:53:44,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 956 to 818. [2022-02-23 19:53:44,133 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) [2022-02-23 19:53:44,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 818 states to 818 states and 1092 transitions. [2022-02-23 19:53:44,135 INFO L78 Accepts]: Start accepts. Automaton has 818 states and 1092 transitions. Word has length 63 [2022-02-23 19:53:44,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 19:53:44,135 INFO L470 AbstractCegarLoop]: Abstraction has 818 states and 1092 transitions. [2022-02-23 19:53:44,135 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 9 states have internal predecessors, (47), 2 states have call successors, (9), 8 states have call predecessors, (9), 5 states have return successors, (7), 5 states have call predecessors, (7), 1 states have call successors, (7) [2022-02-23 19:53:44,135 INFO L276 IsEmpty]: Start isEmpty. Operand 818 states and 1092 transitions. [2022-02-23 19:53:44,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-02-23 19:53:44,137 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 19:53:44,137 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 19:53:44,137 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-02-23 19:53:44,137 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 19:53:44,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 19:53:44,138 INFO L85 PathProgramCache]: Analyzing trace with hash 1342281155, now seen corresponding path program 1 times [2022-02-23 19:53:44,138 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 19:53:44,138 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218270662] [2022-02-23 19:53:44,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 19:53:44,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 19:53:44,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:44,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-23 19:53:44,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:44,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-23 19:53:44,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:44,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-23 19:53:44,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:44,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-02-23 19:53:44,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:44,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-02-23 19:53:44,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:44,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-23 19:53:44,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:44,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-02-23 19:53:44,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:44,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-23 19:53:44,426 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 19:53:44,426 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218270662] [2022-02-23 19:53:44,426 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [218270662] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-23 19:53:44,426 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-23 19:53:44,426 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-02-23 19:53:44,426 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466481232] [2022-02-23 19:53:44,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-23 19:53:44,427 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-02-23 19:53:44,427 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 19:53:44,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-02-23 19:53:44,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=296, Unknown=0, NotChecked=0, Total=342 [2022-02-23 19:53:44,429 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) [2022-02-23 19:53:46,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 19:53:46,783 INFO L93 Difference]: Finished difference Result 970 states and 1350 transitions. [2022-02-23 19:53:46,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-02-23 19:53:46,783 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.4210526315789473) internal successors, (46), 9 states have internal predecessors, (46), 2 states have call successors, (9), 8 states have call predecessors, (9), 5 states have return successors, (7), 5 states have call predecessors, (7), 1 states have call successors, (7) Word has length 62 [2022-02-23 19:53:46,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 19:53:46,786 INFO L225 Difference]: With dead ends: 970 [2022-02-23 19:53:46,786 INFO L226 Difference]: Without dead ends: 951 [2022-02-23 19:53:46,786 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=54, Invalid=366, Unknown=0, NotChecked=0, Total=420 [2022-02-23 19:53:46,786 INFO L933 BasicCegarLoop]: 593 mSDtfsCounter, 584 mSDsluCounter, 2493 mSDsCounter, 0 mSdLazyCounter, 5548 mSolverCounterSat, 244 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s 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, 2.3s IncrementalHoareTripleChecker+Time [2022-02-23 19:53:46,787 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [586 Valid, 3086 Invalid, 5792 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [244 Valid, 5548 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-02-23 19:53:46,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 951 states. [2022-02-23 19:53:46,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 951 to 813. [2022-02-23 19:53:46,798 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) [2022-02-23 19:53:46,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 813 states to 813 states and 1085 transitions. [2022-02-23 19:53:46,800 INFO L78 Accepts]: Start accepts. Automaton has 813 states and 1085 transitions. Word has length 62 [2022-02-23 19:53:46,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 19:53:46,800 INFO L470 AbstractCegarLoop]: Abstraction has 813 states and 1085 transitions. [2022-02-23 19:53:46,800 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.4210526315789473) internal successors, (46), 9 states have internal predecessors, (46), 2 states have call successors, (9), 8 states have call predecessors, (9), 5 states have return successors, (7), 5 states have call predecessors, (7), 1 states have call successors, (7) [2022-02-23 19:53:46,800 INFO L276 IsEmpty]: Start isEmpty. Operand 813 states and 1085 transitions. [2022-02-23 19:53:46,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-02-23 19:53:46,802 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 19:53:46,802 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 19:53:46,802 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-02-23 19:53:46,802 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 19:53:46,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 19:53:46,802 INFO L85 PathProgramCache]: Analyzing trace with hash 739520085, now seen corresponding path program 1 times [2022-02-23 19:53:46,802 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 19:53:46,802 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819568772] [2022-02-23 19:53:46,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 19:53:46,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 19:53:46,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:46,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-23 19:53:46,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:46,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-23 19:53:46,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:46,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-23 19:53:46,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:46,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-02-23 19:53:46,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:46,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-23 19:53:46,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:47,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-02-23 19:53:47,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:47,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-02-23 19:53:47,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:47,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-23 19:53:47,108 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 19:53:47,108 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819568772] [2022-02-23 19:53:47,108 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [819568772] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-23 19:53:47,108 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-23 19:53:47,108 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-02-23 19:53:47,108 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546689752] [2022-02-23 19:53:47,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-23 19:53:47,110 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-02-23 19:53:47,110 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 19:53:47,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-02-23 19:53:47,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=327, Unknown=0, NotChecked=0, Total=380 [2022-02-23 19:53:47,110 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) [2022-02-23 19:53:49,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 19:53:49,733 INFO L93 Difference]: Finished difference Result 970 states and 1348 transitions. [2022-02-23 19:53:49,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-02-23 19:53:49,733 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 2.473684210526316) internal successors, (47), 10 states have internal predecessors, (47), 4 states have call successors, (9), 9 states have call predecessors, (9), 4 states have return successors, (7), 5 states have call predecessors, (7), 3 states have call successors, (7) Word has length 63 [2022-02-23 19:53:49,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 19:53:49,735 INFO L225 Difference]: With dead ends: 970 [2022-02-23 19:53:49,735 INFO L226 Difference]: Without dead ends: 949 [2022-02-23 19:53:49,736 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=99, Invalid=603, Unknown=0, NotChecked=0, Total=702 [2022-02-23 19:53:49,736 INFO L933 BasicCegarLoop]: 563 mSDtfsCounter, 1181 mSDsluCounter, 2397 mSDsCounter, 0 mSdLazyCounter, 5554 mSolverCounterSat, 484 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s 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, 2.4s IncrementalHoareTripleChecker+Time [2022-02-23 19:53:49,736 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1184 Valid, 2960 Invalid, 6038 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [484 Valid, 5554 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-02-23 19:53:49,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 949 states. [2022-02-23 19:53:49,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 949 to 811. [2022-02-23 19:53:49,746 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) [2022-02-23 19:53:49,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 811 states to 811 states and 1081 transitions. [2022-02-23 19:53:49,748 INFO L78 Accepts]: Start accepts. Automaton has 811 states and 1081 transitions. Word has length 63 [2022-02-23 19:53:49,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 19:53:49,748 INFO L470 AbstractCegarLoop]: Abstraction has 811 states and 1081 transitions. [2022-02-23 19:53:49,748 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 2.473684210526316) internal successors, (47), 10 states have internal predecessors, (47), 4 states have call successors, (9), 9 states have call predecessors, (9), 4 states have return successors, (7), 5 states have call predecessors, (7), 3 states have call successors, (7) [2022-02-23 19:53:49,748 INFO L276 IsEmpty]: Start isEmpty. Operand 811 states and 1081 transitions. [2022-02-23 19:53:49,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-02-23 19:53:49,750 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 19:53:49,750 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 19:53:49,750 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-02-23 19:53:49,750 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 19:53:49,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 19:53:49,751 INFO L85 PathProgramCache]: Analyzing trace with hash -620638821, now seen corresponding path program 1 times [2022-02-23 19:53:49,751 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 19:53:49,751 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853193934] [2022-02-23 19:53:49,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 19:53:49,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 19:53:49,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:49,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-23 19:53:49,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:49,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-23 19:53:49,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:49,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-23 19:53:49,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:49,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-02-23 19:53:49,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:49,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-02-23 19:53:49,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:49,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-23 19:53:49,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:49,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-02-23 19:53:49,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:49,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-23 19:53:49,918 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 19:53:49,918 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853193934] [2022-02-23 19:53:49,918 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1853193934] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-23 19:53:49,918 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-23 19:53:49,918 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-02-23 19:53:49,919 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240603909] [2022-02-23 19:53:49,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-23 19:53:49,919 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-02-23 19:53:49,919 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 19:53:49,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-02-23 19:53:49,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-02-23 19:53:49,919 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) [2022-02-23 19:53:50,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 19:53:50,821 INFO L93 Difference]: Finished difference Result 814 states and 1084 transitions. [2022-02-23 19:53:50,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-02-23 19:53:50,821 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.7) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (9), 9 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 63 [2022-02-23 19:53:50,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 19:53:50,823 INFO L225 Difference]: With dead ends: 814 [2022-02-23 19:53:50,823 INFO L226 Difference]: Without dead ends: 810 [2022-02-23 19:53:50,823 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=66, Unknown=0, NotChecked=0, Total=110 [2022-02-23 19:53:50,823 INFO L933 BasicCegarLoop]: 523 mSDtfsCounter, 1153 mSDsluCounter, 540 mSDsCounter, 0 mSdLazyCounter, 734 mSolverCounterSat, 439 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s 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, 0.8s IncrementalHoareTripleChecker+Time [2022-02-23 19:53:50,823 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1155 Valid, 1063 Invalid, 1173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [439 Valid, 734 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-02-23 19:53:50,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 810 states. [2022-02-23 19:53:50,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 810 to 703. [2022-02-23 19:53:50,831 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) [2022-02-23 19:53:50,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 703 states to 703 states and 912 transitions. [2022-02-23 19:53:50,832 INFO L78 Accepts]: Start accepts. Automaton has 703 states and 912 transitions. Word has length 63 [2022-02-23 19:53:50,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 19:53:50,833 INFO L470 AbstractCegarLoop]: Abstraction has 703 states and 912 transitions. [2022-02-23 19:53:50,833 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.7) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (9), 9 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-02-23 19:53:50,833 INFO L276 IsEmpty]: Start isEmpty. Operand 703 states and 912 transitions. [2022-02-23 19:53:50,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-02-23 19:53:50,834 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 19:53:50,835 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 19:53:50,835 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-02-23 19:53:50,835 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 19:53:50,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 19:53:50,835 INFO L85 PathProgramCache]: Analyzing trace with hash -306718972, now seen corresponding path program 1 times [2022-02-23 19:53:50,835 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 19:53:50,835 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949887212] [2022-02-23 19:53:50,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 19:53:50,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 19:53:50,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:50,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-23 19:53:50,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:50,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-23 19:53:50,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:50,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-23 19:53:50,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:50,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-02-23 19:53:50,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:50,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-23 19:53:50,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:50,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-02-23 19:53:50,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:50,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-02-23 19:53:50,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:50,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-23 19:53:50,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:50,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-23 19:53:50,987 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 19:53:50,987 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949887212] [2022-02-23 19:53:50,987 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [949887212] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-23 19:53:50,987 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-23 19:53:50,987 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-02-23 19:53:50,987 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402335105] [2022-02-23 19:53:50,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-23 19:53:50,987 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-02-23 19:53:50,987 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 19:53:50,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-02-23 19:53:50,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-02-23 19:53:50,988 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) [2022-02-23 19:53:51,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 19:53:51,989 INFO L93 Difference]: Finished difference Result 775 states and 1026 transitions. [2022-02-23 19:53:51,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-02-23 19:53:51,989 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (12), 8 states have call predecessors, (12), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) Word has length 66 [2022-02-23 19:53:51,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 19:53:51,992 INFO L225 Difference]: With dead ends: 775 [2022-02-23 19:53:51,992 INFO L226 Difference]: Without dead ends: 775 [2022-02-23 19:53:51,992 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2022-02-23 19:53:51,992 INFO L933 BasicCegarLoop]: 485 mSDtfsCounter, 685 mSDsluCounter, 382 mSDsCounter, 0 mSdLazyCounter, 885 mSolverCounterSat, 257 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s 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, 1.0s IncrementalHoareTripleChecker+Time [2022-02-23 19:53:51,993 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [696 Valid, 867 Invalid, 1142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [257 Valid, 885 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-02-23 19:53:51,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 775 states. [2022-02-23 19:53:52,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 775 to 703. [2022-02-23 19:53:52,000 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) [2022-02-23 19:53:52,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 703 states to 703 states and 910 transitions. [2022-02-23 19:53:52,001 INFO L78 Accepts]: Start accepts. Automaton has 703 states and 910 transitions. Word has length 66 [2022-02-23 19:53:52,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 19:53:52,002 INFO L470 AbstractCegarLoop]: Abstraction has 703 states and 910 transitions. [2022-02-23 19:53:52,002 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (12), 8 states have call predecessors, (12), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2022-02-23 19:53:52,002 INFO L276 IsEmpty]: Start isEmpty. Operand 703 states and 910 transitions. [2022-02-23 19:53:52,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-02-23 19:53:52,003 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 19:53:52,003 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 19:53:52,003 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-02-23 19:53:52,004 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 19:53:52,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 19:53:52,004 INFO L85 PathProgramCache]: Analyzing trace with hash 526937182, now seen corresponding path program 1 times [2022-02-23 19:53:52,004 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 19:53:52,004 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674812846] [2022-02-23 19:53:52,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 19:53:52,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 19:53:52,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:52,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-23 19:53:52,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:52,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-23 19:53:52,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:52,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-23 19:53:52,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:52,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-02-23 19:53:52,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:52,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-23 19:53:52,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:52,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-02-23 19:53:52,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:52,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-23 19:53:52,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:52,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-02-23 19:53:52,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:52,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-23 19:53:52,347 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 19:53:52,347 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674812846] [2022-02-23 19:53:52,347 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1674812846] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-23 19:53:52,347 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-23 19:53:52,347 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-02-23 19:53:52,348 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070550661] [2022-02-23 19:53:52,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-23 19:53:52,348 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-02-23 19:53:52,362 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 19:53:52,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-02-23 19:53:52,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=359, Unknown=0, NotChecked=0, Total=420 [2022-02-23 19:53:52,364 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) [2022-02-23 19:53:54,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 19:53:54,713 INFO L93 Difference]: Finished difference Result 796 states and 1048 transitions. [2022-02-23 19:53:54,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-02-23 19:53:54,714 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 2.45) internal successors, (49), 10 states have internal predecessors, (49), 4 states have call successors, (10), 10 states have call predecessors, (10), 4 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) Word has length 67 [2022-02-23 19:53:54,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 19:53:54,715 INFO L225 Difference]: With dead ends: 796 [2022-02-23 19:53:54,716 INFO L226 Difference]: Without dead ends: 774 [2022-02-23 19:53:54,716 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=120, Invalid=692, Unknown=0, NotChecked=0, Total=812 [2022-02-23 19:53:54,716 INFO L933 BasicCegarLoop]: 519 mSDtfsCounter, 1436 mSDsluCounter, 2347 mSDsCounter, 0 mSdLazyCounter, 5164 mSolverCounterSat, 555 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s 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, 2.1s IncrementalHoareTripleChecker+Time [2022-02-23 19:53:54,716 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1440 Valid, 2866 Invalid, 5719 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [555 Valid, 5164 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-02-23 19:53:54,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 774 states. [2022-02-23 19:53:54,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 774 to 701. [2022-02-23 19:53:54,723 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) [2022-02-23 19:53:54,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 701 states to 701 states and 906 transitions. [2022-02-23 19:53:54,724 INFO L78 Accepts]: Start accepts. Automaton has 701 states and 906 transitions. Word has length 67 [2022-02-23 19:53:54,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 19:53:54,724 INFO L470 AbstractCegarLoop]: Abstraction has 701 states and 906 transitions. [2022-02-23 19:53:54,724 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 2.45) internal successors, (49), 10 states have internal predecessors, (49), 4 states have call successors, (10), 10 states have call predecessors, (10), 4 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) [2022-02-23 19:53:54,725 INFO L276 IsEmpty]: Start isEmpty. Operand 701 states and 906 transitions. [2022-02-23 19:53:54,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-02-23 19:53:54,726 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 19:53:54,726 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 19:53:54,726 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2022-02-23 19:53:54,726 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 19:53:54,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 19:53:54,726 INFO L85 PathProgramCache]: Analyzing trace with hash 459314479, now seen corresponding path program 1 times [2022-02-23 19:53:54,726 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 19:53:54,726 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853649063] [2022-02-23 19:53:54,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 19:53:54,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 19:53:54,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:54,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-23 19:53:54,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:54,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-23 19:53:54,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:54,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-23 19:53:54,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:54,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-02-23 19:53:54,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:54,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-23 19:53:54,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:54,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-23 19:53:54,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:55,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-02-23 19:53:55,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:55,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-02-23 19:53:55,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:55,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-23 19:53:55,084 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 19:53:55,085 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853649063] [2022-02-23 19:53:55,085 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1853649063] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-23 19:53:55,085 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-23 19:53:55,085 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-02-23 19:53:55,085 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537024611] [2022-02-23 19:53:55,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-23 19:53:55,085 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-02-23 19:53:55,085 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 19:53:55,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-02-23 19:53:55,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=359, Unknown=0, NotChecked=0, Total=420 [2022-02-23 19:53:55,086 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) [2022-02-23 19:53:57,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 19:53:57,548 INFO L93 Difference]: Finished difference Result 791 states and 1039 transitions. [2022-02-23 19:53:57,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-02-23 19:53:57,549 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 2.4) internal successors, (48), 10 states have internal predecessors, (48), 4 states have call successors, (10), 10 states have call predecessors, (10), 4 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) Word has length 66 [2022-02-23 19:53:57,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 19:53:57,550 INFO L225 Difference]: With dead ends: 791 [2022-02-23 19:53:57,550 INFO L226 Difference]: Without dead ends: 769 [2022-02-23 19:53:57,550 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=120, Invalid=692, Unknown=0, NotChecked=0, Total=812 [2022-02-23 19:53:57,551 INFO L933 BasicCegarLoop]: 497 mSDtfsCounter, 344 mSDsluCounter, 1989 mSDsCounter, 0 mSdLazyCounter, 5202 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s 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, 2.2s IncrementalHoareTripleChecker+Time [2022-02-23 19:53:57,551 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [347 Valid, 2486 Invalid, 5329 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 5202 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-02-23 19:53:57,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 769 states. [2022-02-23 19:53:57,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 769 to 699. [2022-02-23 19:53:57,557 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) [2022-02-23 19:53:57,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 699 states to 699 states and 902 transitions. [2022-02-23 19:53:57,558 INFO L78 Accepts]: Start accepts. Automaton has 699 states and 902 transitions. Word has length 66 [2022-02-23 19:53:57,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 19:53:57,558 INFO L470 AbstractCegarLoop]: Abstraction has 699 states and 902 transitions. [2022-02-23 19:53:57,559 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 2.4) internal successors, (48), 10 states have internal predecessors, (48), 4 states have call successors, (10), 10 states have call predecessors, (10), 4 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) [2022-02-23 19:53:57,559 INFO L276 IsEmpty]: Start isEmpty. Operand 699 states and 902 transitions. [2022-02-23 19:53:57,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-02-23 19:53:57,560 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 19:53:57,560 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 19:53:57,560 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2022-02-23 19:53:57,560 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 19:53:57,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 19:53:57,561 INFO L85 PathProgramCache]: Analyzing trace with hash 1659747958, now seen corresponding path program 1 times [2022-02-23 19:53:57,561 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 19:53:57,561 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59479627] [2022-02-23 19:53:57,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 19:53:57,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 19:53:57,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:57,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-23 19:53:57,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:57,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-23 19:53:57,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:57,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-23 19:53:57,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:57,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-02-23 19:53:57,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:57,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-02-23 19:53:57,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:57,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-02-23 19:53:57,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:57,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-02-23 19:53:57,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:57,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-23 19:53:57,774 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 19:53:57,775 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59479627] [2022-02-23 19:53:57,776 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [59479627] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-23 19:53:57,776 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-23 19:53:57,776 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-02-23 19:53:57,776 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290077481] [2022-02-23 19:53:57,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-23 19:53:57,776 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-02-23 19:53:57,776 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 19:53:57,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-02-23 19:53:57,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2022-02-23 19:53:57,777 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) [2022-02-23 19:53:58,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 19:53:58,917 INFO L93 Difference]: Finished difference Result 800 states and 1053 transitions. [2022-02-23 19:53:58,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-02-23 19:53:58,917 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.083333333333333) internal successors, (49), 5 states have internal predecessors, (49), 3 states have call successors, (9), 9 states have call predecessors, (9), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 65 [2022-02-23 19:53:58,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 19:53:58,919 INFO L225 Difference]: With dead ends: 800 [2022-02-23 19:53:58,919 INFO L226 Difference]: Without dead ends: 800 [2022-02-23 19:53:58,919 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=138, Invalid=282, Unknown=0, NotChecked=0, Total=420 [2022-02-23 19:53:58,919 INFO L933 BasicCegarLoop]: 498 mSDtfsCounter, 780 mSDsluCounter, 518 mSDsCounter, 0 mSdLazyCounter, 1102 mSolverCounterSat, 258 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s 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, 0.9s IncrementalHoareTripleChecker+Time [2022-02-23 19:53:58,919 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [783 Valid, 1016 Invalid, 1360 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [258 Valid, 1102 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-02-23 19:53:58,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 800 states. [2022-02-23 19:53:58,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 800 to 705. [2022-02-23 19:53:58,927 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) [2022-02-23 19:53:58,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 705 states to 705 states and 910 transitions. [2022-02-23 19:53:58,928 INFO L78 Accepts]: Start accepts. Automaton has 705 states and 910 transitions. Word has length 65 [2022-02-23 19:53:58,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 19:53:58,928 INFO L470 AbstractCegarLoop]: Abstraction has 705 states and 910 transitions. [2022-02-23 19:53:58,928 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.083333333333333) internal successors, (49), 5 states have internal predecessors, (49), 3 states have call successors, (9), 9 states have call predecessors, (9), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-02-23 19:53:58,929 INFO L276 IsEmpty]: Start isEmpty. Operand 705 states and 910 transitions. [2022-02-23 19:53:58,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-02-23 19:53:58,930 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 19:53:58,930 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 19:53:58,930 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2022-02-23 19:53:58,930 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 19:53:58,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 19:53:58,931 INFO L85 PathProgramCache]: Analyzing trace with hash -697612646, now seen corresponding path program 1 times [2022-02-23 19:53:58,931 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 19:53:58,931 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688249946] [2022-02-23 19:53:58,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 19:53:58,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 19:53:58,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:58,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-23 19:53:58,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:59,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-23 19:53:59,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:59,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-23 19:53:59,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:59,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-02-23 19:53:59,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:59,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-02-23 19:53:59,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:59,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-02-23 19:53:59,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:59,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-02-23 19:53:59,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:53:59,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-23 19:53:59,116 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 19:53:59,116 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688249946] [2022-02-23 19:53:59,116 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [688249946] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-23 19:53:59,116 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-23 19:53:59,116 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-02-23 19:53:59,116 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721938192] [2022-02-23 19:53:59,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-23 19:53:59,116 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-02-23 19:53:59,116 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 19:53:59,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-02-23 19:53:59,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2022-02-23 19:53:59,117 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) [2022-02-23 19:54:00,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 19:54:00,303 INFO L93 Difference]: Finished difference Result 777 states and 1020 transitions. [2022-02-23 19:54:00,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-02-23 19:54:00,304 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.166666666666667) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 66 [2022-02-23 19:54:00,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 19:54:00,306 INFO L225 Difference]: With dead ends: 777 [2022-02-23 19:54:00,306 INFO L226 Difference]: Without dead ends: 777 [2022-02-23 19:54:00,306 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=76, Invalid=164, Unknown=0, NotChecked=0, Total=240 [2022-02-23 19:54:00,307 INFO L933 BasicCegarLoop]: 504 mSDtfsCounter, 615 mSDsluCounter, 718 mSDsCounter, 0 mSdLazyCounter, 1662 mSolverCounterSat, 224 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s 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, 1.0s IncrementalHoareTripleChecker+Time [2022-02-23 19:54:00,307 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [617 Valid, 1222 Invalid, 1886 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [224 Valid, 1662 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-02-23 19:54:00,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 777 states. [2022-02-23 19:54:00,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 777 to 705. [2022-02-23 19:54:00,314 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) [2022-02-23 19:54:00,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 705 states to 705 states and 908 transitions. [2022-02-23 19:54:00,315 INFO L78 Accepts]: Start accepts. Automaton has 705 states and 908 transitions. Word has length 66 [2022-02-23 19:54:00,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 19:54:00,316 INFO L470 AbstractCegarLoop]: Abstraction has 705 states and 908 transitions. [2022-02-23 19:54:00,316 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.166666666666667) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-02-23 19:54:00,316 INFO L276 IsEmpty]: Start isEmpty. Operand 705 states and 908 transitions. [2022-02-23 19:54:00,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-02-23 19:54:00,317 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 19:54:00,317 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 19:54:00,317 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2022-02-23 19:54:00,318 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 19:54:00,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 19:54:00,318 INFO L85 PathProgramCache]: Analyzing trace with hash -346812709, now seen corresponding path program 1 times [2022-02-23 19:54:00,318 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 19:54:00,318 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055928320] [2022-02-23 19:54:00,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 19:54:00,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 19:54:00,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:54:00,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-23 19:54:00,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:54:00,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-23 19:54:00,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:54:00,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-23 19:54:00,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:54:00,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-02-23 19:54:00,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:54:00,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-02-23 19:54:00,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:54:00,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-02-23 19:54:00,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:54:00,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-02-23 19:54:00,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:54:00,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-23 19:54:00,569 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 19:54:00,569 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055928320] [2022-02-23 19:54:00,570 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2055928320] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-23 19:54:00,570 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-23 19:54:00,570 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-02-23 19:54:00,570 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551847660] [2022-02-23 19:54:00,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-23 19:54:00,570 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-02-23 19:54:00,570 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 19:54:00,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-02-23 19:54:00,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2022-02-23 19:54:00,570 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) [2022-02-23 19:54:02,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 19:54:02,413 INFO L93 Difference]: Finished difference Result 799 states and 1045 transitions. [2022-02-23 19:54:02,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-02-23 19:54:02,413 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.125) internal successors, (50), 7 states have internal predecessors, (50), 3 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 4 states have call predecessors, (7), 2 states have call successors, (7) Word has length 66 [2022-02-23 19:54:02,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 19:54:02,415 INFO L225 Difference]: With dead ends: 799 [2022-02-23 19:54:02,415 INFO L226 Difference]: Without dead ends: 725 [2022-02-23 19:54:02,415 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2022-02-23 19:54:02,416 INFO L933 BasicCegarLoop]: 507 mSDtfsCounter, 1192 mSDsluCounter, 1496 mSDsCounter, 0 mSdLazyCounter, 3753 mSolverCounterSat, 447 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s 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 [2022-02-23 19:54:02,416 INFO L934 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] [2022-02-23 19:54:02,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 725 states. [2022-02-23 19:54:02,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 725 to 668. [2022-02-23 19:54:02,423 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) [2022-02-23 19:54:02,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 668 states to 668 states and 847 transitions. [2022-02-23 19:54:02,425 INFO L78 Accepts]: Start accepts. Automaton has 668 states and 847 transitions. Word has length 66 [2022-02-23 19:54:02,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 19:54:02,425 INFO L470 AbstractCegarLoop]: Abstraction has 668 states and 847 transitions. [2022-02-23 19:54:02,425 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.125) internal successors, (50), 7 states have internal predecessors, (50), 3 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 4 states have call predecessors, (7), 2 states have call successors, (7) [2022-02-23 19:54:02,425 INFO L276 IsEmpty]: Start isEmpty. Operand 668 states and 847 transitions. [2022-02-23 19:54:02,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-02-23 19:54:02,426 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 19:54:02,427 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 19:54:02,427 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2022-02-23 19:54:02,427 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 19:54:02,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 19:54:02,427 INFO L85 PathProgramCache]: Analyzing trace with hash 255041077, now seen corresponding path program 1 times [2022-02-23 19:54:02,427 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 19:54:02,427 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897040035] [2022-02-23 19:54:02,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 19:54:02,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 19:54:02,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:54:02,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-23 19:54:02,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:54:02,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-23 19:54:02,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:54:02,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-23 19:54:02,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:54:02,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-02-23 19:54:02,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:54:02,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-02-23 19:54:02,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:54:02,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-02-23 19:54:02,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:54:02,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-02-23 19:54:02,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:54:02,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-23 19:54:02,601 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 19:54:02,601 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1897040035] [2022-02-23 19:54:02,602 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1897040035] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-23 19:54:02,602 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-23 19:54:02,602 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-02-23 19:54:02,602 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836290808] [2022-02-23 19:54:02,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-23 19:54:02,602 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-02-23 19:54:02,602 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 19:54:02,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-02-23 19:54:02,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-02-23 19:54:02,603 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) [2022-02-23 19:54:03,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 19:54:03,849 INFO L93 Difference]: Finished difference Result 842 states and 1081 transitions. [2022-02-23 19:54:03,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-02-23 19:54:03,849 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.1) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (9), 9 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) Word has length 67 [2022-02-23 19:54:03,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 19:54:03,851 INFO L225 Difference]: With dead ends: 842 [2022-02-23 19:54:03,851 INFO L226 Difference]: Without dead ends: 842 [2022-02-23 19:54:03,851 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 10 SyntacticMatches, 3 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=58, Invalid=98, Unknown=0, NotChecked=0, Total=156 [2022-02-23 19:54:03,854 INFO L933 BasicCegarLoop]: 476 mSDtfsCounter, 964 mSDsluCounter, 440 mSDsCounter, 0 mSdLazyCounter, 1505 mSolverCounterSat, 356 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s 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, 1.2s IncrementalHoareTripleChecker+Time [2022-02-23 19:54:03,854 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [978 Valid, 916 Invalid, 1861 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [356 Valid, 1505 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-02-23 19:54:03,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 842 states. [2022-02-23 19:54:03,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 842 to 714. [2022-02-23 19:54:03,860 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) [2022-02-23 19:54:03,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 714 states to 714 states and 899 transitions. [2022-02-23 19:54:03,861 INFO L78 Accepts]: Start accepts. Automaton has 714 states and 899 transitions. Word has length 67 [2022-02-23 19:54:03,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 19:54:03,862 INFO L470 AbstractCegarLoop]: Abstraction has 714 states and 899 transitions. [2022-02-23 19:54:03,862 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.1) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (9), 9 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2022-02-23 19:54:03,862 INFO L276 IsEmpty]: Start isEmpty. Operand 714 states and 899 transitions. [2022-02-23 19:54:03,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-02-23 19:54:03,863 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 19:54:03,863 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 19:54:03,863 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2022-02-23 19:54:03,864 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 19:54:03,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 19:54:03,864 INFO L85 PathProgramCache]: Analyzing trace with hash -2058592464, now seen corresponding path program 1 times [2022-02-23 19:54:03,864 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 19:54:03,864 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995362189] [2022-02-23 19:54:03,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 19:54:03,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 19:54:03,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:54:03,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-23 19:54:03,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:54:03,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-23 19:54:03,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:54:03,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-23 19:54:03,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:54:03,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-02-23 19:54:03,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:54:03,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-02-23 19:54:04,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:54:04,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-02-23 19:54:04,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:54:04,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-02-23 19:54:04,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:54:04,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-23 19:54:04,050 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 19:54:04,051 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995362189] [2022-02-23 19:54:04,051 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1995362189] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-23 19:54:04,051 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-23 19:54:04,051 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-02-23 19:54:04,051 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027462031] [2022-02-23 19:54:04,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-23 19:54:04,051 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-02-23 19:54:04,051 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 19:54:04,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-02-23 19:54:04,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2022-02-23 19:54:04,052 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) [2022-02-23 19:54:05,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 19:54:05,246 INFO L93 Difference]: Finished difference Result 765 states and 978 transitions. [2022-02-23 19:54:05,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-02-23 19:54:05,247 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.25) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 67 [2022-02-23 19:54:05,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 19:54:05,248 INFO L225 Difference]: With dead ends: 765 [2022-02-23 19:54:05,249 INFO L226 Difference]: Without dead ends: 760 [2022-02-23 19:54:05,249 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2022-02-23 19:54:05,249 INFO L933 BasicCegarLoop]: 451 mSDtfsCounter, 1233 mSDsluCounter, 629 mSDsCounter, 0 mSdLazyCounter, 1254 mSolverCounterSat, 474 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s 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, 1.0s IncrementalHoareTripleChecker+Time [2022-02-23 19:54:05,249 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1235 Valid, 1080 Invalid, 1728 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [474 Valid, 1254 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-02-23 19:54:05,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 760 states. [2022-02-23 19:54:05,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 760 to 709. [2022-02-23 19:54:05,260 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) [2022-02-23 19:54:05,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 709 states to 709 states and 892 transitions. [2022-02-23 19:54:05,261 INFO L78 Accepts]: Start accepts. Automaton has 709 states and 892 transitions. Word has length 67 [2022-02-23 19:54:05,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 19:54:05,262 INFO L470 AbstractCegarLoop]: Abstraction has 709 states and 892 transitions. [2022-02-23 19:54:05,262 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.25) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-02-23 19:54:05,262 INFO L276 IsEmpty]: Start isEmpty. Operand 709 states and 892 transitions. [2022-02-23 19:54:05,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-02-23 19:54:05,263 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 19:54:05,263 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 19:54:05,263 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2022-02-23 19:54:05,263 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 19:54:05,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 19:54:05,264 INFO L85 PathProgramCache]: Analyzing trace with hash -238065346, now seen corresponding path program 1 times [2022-02-23 19:54:05,264 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 19:54:05,264 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347160677] [2022-02-23 19:54:05,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 19:54:05,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 19:54:05,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:54:05,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-23 19:54:05,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:54:05,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-23 19:54:05,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:54:05,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-23 19:54:05,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:54:05,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-02-23 19:54:05,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:54:05,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-02-23 19:54:05,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:54:05,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-02-23 19:54:05,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:54:05,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-02-23 19:54:05,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:54:05,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-23 19:54:05,448 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 19:54:05,448 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1347160677] [2022-02-23 19:54:05,448 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1347160677] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-23 19:54:05,448 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-23 19:54:05,448 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-02-23 19:54:05,448 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992117166] [2022-02-23 19:54:05,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-23 19:54:05,448 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-02-23 19:54:05,448 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 19:54:05,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-02-23 19:54:05,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-02-23 19:54:05,449 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) [2022-02-23 19:54:06,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 19:54:06,356 INFO L93 Difference]: Finished difference Result 763 states and 966 transitions. [2022-02-23 19:54:06,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-02-23 19:54:06,356 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.2) internal successors, (52), 3 states have internal predecessors, (52), 2 states have call successors, (9), 9 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) Word has length 68 [2022-02-23 19:54:06,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 19:54:06,358 INFO L225 Difference]: With dead ends: 763 [2022-02-23 19:54:06,358 INFO L226 Difference]: Without dead ends: 746 [2022-02-23 19:54:06,358 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 9 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=58, Invalid=98, Unknown=0, NotChecked=0, Total=156 [2022-02-23 19:54:06,358 INFO L933 BasicCegarLoop]: 463 mSDtfsCounter, 1100 mSDsluCounter, 354 mSDsCounter, 0 mSdLazyCounter, 901 mSolverCounterSat, 397 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s 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, 0.8s IncrementalHoareTripleChecker+Time [2022-02-23 19:54:06,359 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1116 Valid, 817 Invalid, 1298 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [397 Valid, 901 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-02-23 19:54:06,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 746 states. [2022-02-23 19:54:06,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 746 to 690. [2022-02-23 19:54:06,365 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) [2022-02-23 19:54:06,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 690 states to 690 states and 864 transitions. [2022-02-23 19:54:06,375 INFO L78 Accepts]: Start accepts. Automaton has 690 states and 864 transitions. Word has length 68 [2022-02-23 19:54:06,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 19:54:06,375 INFO L470 AbstractCegarLoop]: Abstraction has 690 states and 864 transitions. [2022-02-23 19:54:06,375 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.2) internal successors, (52), 3 states have internal predecessors, (52), 2 states have call successors, (9), 9 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2022-02-23 19:54:06,375 INFO L276 IsEmpty]: Start isEmpty. Operand 690 states and 864 transitions. [2022-02-23 19:54:06,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-02-23 19:54:06,376 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 19:54:06,376 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 19:54:06,377 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2022-02-23 19:54:06,377 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 19:54:06,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 19:54:06,377 INFO L85 PathProgramCache]: Analyzing trace with hash -653091009, now seen corresponding path program 1 times [2022-02-23 19:54:06,377 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 19:54:06,377 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714300999] [2022-02-23 19:54:06,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 19:54:06,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 19:54:06,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:54:06,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-23 19:54:06,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:54:06,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-23 19:54:06,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:54:06,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-23 19:54:06,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:54:06,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-02-23 19:54:06,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:54:06,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-02-23 19:54:06,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:54:06,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-02-23 19:54:06,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:54:06,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-02-23 19:54:06,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:54:06,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-23 19:54:06,563 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 19:54:06,563 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714300999] [2022-02-23 19:54:06,563 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [714300999] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-23 19:54:06,563 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-23 19:54:06,563 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-02-23 19:54:06,564 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438663312] [2022-02-23 19:54:06,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-23 19:54:06,564 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-02-23 19:54:06,564 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 19:54:06,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-02-23 19:54:06,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2022-02-23 19:54:06,564 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) [2022-02-23 19:54:08,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 19:54:08,207 INFO L93 Difference]: Finished difference Result 816 states and 1041 transitions. [2022-02-23 19:54:08,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-02-23 19:54:08,207 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.333333333333333) internal successors, (52), 5 states have internal predecessors, (52), 3 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 4 states have call predecessors, (7), 2 states have call successors, (7) Word has length 68 [2022-02-23 19:54:08,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 19:54:08,209 INFO L225 Difference]: With dead ends: 816 [2022-02-23 19:54:08,209 INFO L226 Difference]: Without dead ends: 816 [2022-02-23 19:54:08,210 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=113, Invalid=267, Unknown=0, NotChecked=0, Total=380 [2022-02-23 19:54:08,210 INFO L933 BasicCegarLoop]: 472 mSDtfsCounter, 1734 mSDsluCounter, 542 mSDsCounter, 0 mSdLazyCounter, 1848 mSolverCounterSat, 633 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s 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, 1.4s IncrementalHoareTripleChecker+Time [2022-02-23 19:54:08,210 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1741 Valid, 1014 Invalid, 2481 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [633 Valid, 1848 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-02-23 19:54:08,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 816 states. [2022-02-23 19:54:08,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 816 to 690. [2022-02-23 19:54:08,217 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) [2022-02-23 19:54:08,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 690 states to 690 states and 862 transitions. [2022-02-23 19:54:08,218 INFO L78 Accepts]: Start accepts. Automaton has 690 states and 862 transitions. Word has length 68 [2022-02-23 19:54:08,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 19:54:08,219 INFO L470 AbstractCegarLoop]: Abstraction has 690 states and 862 transitions. [2022-02-23 19:54:08,219 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.333333333333333) internal successors, (52), 5 states have internal predecessors, (52), 3 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 4 states have call predecessors, (7), 2 states have call successors, (7) [2022-02-23 19:54:08,219 INFO L276 IsEmpty]: Start isEmpty. Operand 690 states and 862 transitions. [2022-02-23 19:54:08,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-02-23 19:54:08,220 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 19:54:08,220 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 19:54:08,220 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2022-02-23 19:54:08,220 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 19:54:08,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 19:54:08,221 INFO L85 PathProgramCache]: Analyzing trace with hash -1034853120, now seen corresponding path program 1 times [2022-02-23 19:54:08,221 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 19:54:08,221 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361966979] [2022-02-23 19:54:08,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 19:54:08,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 19:54:08,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:54:08,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-23 19:54:08,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:54:08,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-23 19:54:08,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:54:08,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-23 19:54:08,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:54:08,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-02-23 19:54:08,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:54:08,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-23 19:54:08,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:54:08,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-23 19:54:08,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:54:08,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-02-23 19:54:08,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:54:08,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-02-23 19:54:08,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:54:08,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-02-23 19:54:08,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:54:08,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-23 19:54:08,573 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 19:54:08,573 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1361966979] [2022-02-23 19:54:08,573 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1361966979] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-23 19:54:08,573 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-23 19:54:08,573 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-02-23 19:54:08,573 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276800499] [2022-02-23 19:54:08,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-23 19:54:08,574 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-02-23 19:54:08,574 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 19:54:08,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-02-23 19:54:08,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=359, Unknown=0, NotChecked=0, Total=420 [2022-02-23 19:54:08,574 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) [2022-02-23 19:54:10,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 19:54:10,528 INFO L93 Difference]: Finished difference Result 778 states and 990 transitions. [2022-02-23 19:54:10,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-02-23 19:54:10,528 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 2.7) internal successors, (54), 10 states have internal predecessors, (54), 4 states have call successors, (11), 10 states have call predecessors, (11), 4 states have return successors, (9), 5 states have call predecessors, (9), 3 states have call successors, (9) Word has length 74 [2022-02-23 19:54:10,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 19:54:10,532 INFO L225 Difference]: With dead ends: 778 [2022-02-23 19:54:10,532 INFO L226 Difference]: Without dead ends: 756 [2022-02-23 19:54:10,533 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=120, Invalid=692, Unknown=0, NotChecked=0, Total=812 [2022-02-23 19:54:10,534 INFO L933 BasicCegarLoop]: 459 mSDtfsCounter, 566 mSDsluCounter, 2182 mSDsCounter, 0 mSdLazyCounter, 4524 mSolverCounterSat, 210 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s 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, 1.8s IncrementalHoareTripleChecker+Time [2022-02-23 19:54:10,534 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [571 Valid, 2641 Invalid, 4734 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [210 Valid, 4524 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-02-23 19:54:10,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 756 states. [2022-02-23 19:54:10,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 756 to 688. [2022-02-23 19:54:10,542 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) [2022-02-23 19:54:10,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 688 states to 688 states and 858 transitions. [2022-02-23 19:54:10,543 INFO L78 Accepts]: Start accepts. Automaton has 688 states and 858 transitions. Word has length 74 [2022-02-23 19:54:10,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 19:54:10,543 INFO L470 AbstractCegarLoop]: Abstraction has 688 states and 858 transitions. [2022-02-23 19:54:10,544 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 2.7) internal successors, (54), 10 states have internal predecessors, (54), 4 states have call successors, (11), 10 states have call predecessors, (11), 4 states have return successors, (9), 5 states have call predecessors, (9), 3 states have call successors, (9) [2022-02-23 19:54:10,544 INFO L276 IsEmpty]: Start isEmpty. Operand 688 states and 858 transitions. [2022-02-23 19:54:10,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-02-23 19:54:10,545 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 19:54:10,545 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 19:54:10,545 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2022-02-23 19:54:10,545 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 19:54:10,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 19:54:10,546 INFO L85 PathProgramCache]: Analyzing trace with hash -8057471, now seen corresponding path program 1 times [2022-02-23 19:54:10,546 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 19:54:10,546 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686110137] [2022-02-23 19:54:10,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 19:54:10,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 19:54:10,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:54:10,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-23 19:54:10,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:54:10,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-23 19:54:10,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:54:10,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-23 19:54:10,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:54:10,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-02-23 19:54:10,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:54:10,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-23 19:54:10,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:54:10,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-02-23 19:54:10,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:54:10,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-02-23 19:54:10,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:54:10,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-02-23 19:54:10,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:54:10,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-23 19:54:10,922 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 19:54:10,922 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686110137] [2022-02-23 19:54:10,922 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1686110137] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-23 19:54:10,922 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-23 19:54:10,923 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2022-02-23 19:54:10,923 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963699600] [2022-02-23 19:54:10,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-23 19:54:10,923 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-02-23 19:54:10,923 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 19:54:10,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-02-23 19:54:10,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=441, Unknown=0, NotChecked=0, Total=506 [2022-02-23 19:54:10,923 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) [2022-02-23 19:54:13,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 19:54:13,351 INFO L93 Difference]: Finished difference Result 759 states and 958 transitions. [2022-02-23 19:54:13,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-02-23 19:54:13,352 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 2.3636363636363638) internal successors, (52), 11 states have internal predecessors, (52), 4 states have call successors, (10), 10 states have call predecessors, (10), 5 states have return successors, (8), 6 states have call predecessors, (8), 3 states have call successors, (8) Word has length 70 [2022-02-23 19:54:13,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 19:54:13,353 INFO L225 Difference]: With dead ends: 759 [2022-02-23 19:54:13,354 INFO L226 Difference]: Without dead ends: 735 [2022-02-23 19:54:13,354 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=148, Invalid=908, Unknown=0, NotChecked=0, Total=1056 [2022-02-23 19:54:13,354 INFO L933 BasicCegarLoop]: 450 mSDtfsCounter, 767 mSDsluCounter, 2554 mSDsCounter, 0 mSdLazyCounter, 5469 mSolverCounterSat, 285 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s 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, 2.1s IncrementalHoareTripleChecker+Time [2022-02-23 19:54:13,354 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [769 Valid, 3004 Invalid, 5754 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [285 Valid, 5469 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-02-23 19:54:13,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 735 states. [2022-02-23 19:54:13,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 735 to 685. [2022-02-23 19:54:13,361 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) [2022-02-23 19:54:13,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 685 states to 685 states and 853 transitions. [2022-02-23 19:54:13,362 INFO L78 Accepts]: Start accepts. Automaton has 685 states and 853 transitions. Word has length 70 [2022-02-23 19:54:13,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 19:54:13,363 INFO L470 AbstractCegarLoop]: Abstraction has 685 states and 853 transitions. [2022-02-23 19:54:13,363 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 2.3636363636363638) internal successors, (52), 11 states have internal predecessors, (52), 4 states have call successors, (10), 10 states have call predecessors, (10), 5 states have return successors, (8), 6 states have call predecessors, (8), 3 states have call successors, (8) [2022-02-23 19:54:13,363 INFO L276 IsEmpty]: Start isEmpty. Operand 685 states and 853 transitions. [2022-02-23 19:54:13,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-02-23 19:54:13,364 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 19:54:13,364 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 19:54:13,364 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2022-02-23 19:54:13,364 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 19:54:13,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 19:54:13,365 INFO L85 PathProgramCache]: Analyzing trace with hash 226042889, now seen corresponding path program 1 times [2022-02-23 19:54:13,365 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 19:54:13,365 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346302721] [2022-02-23 19:54:13,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 19:54:13,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 19:54:13,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:54:13,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-23 19:54:13,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:54:13,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-23 19:54:13,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:54:13,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-23 19:54:13,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:54:13,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-02-23 19:54:13,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:54:13,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-02-23 19:54:13,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:54:13,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-02-23 19:54:13,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:54:13,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-02-23 19:54:13,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:54:13,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-23 19:54:13,705 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 19:54:13,705 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1346302721] [2022-02-23 19:54:13,705 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1346302721] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-23 19:54:13,705 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-23 19:54:13,705 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-02-23 19:54:13,706 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957814905] [2022-02-23 19:54:13,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-23 19:54:13,706 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-02-23 19:54:13,706 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 19:54:13,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-02-23 19:54:13,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=296, Unknown=0, NotChecked=0, Total=342 [2022-02-23 19:54:13,707 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) [2022-02-23 19:54:15,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 19:54:15,491 INFO L93 Difference]: Finished difference Result 752 states and 948 transitions. [2022-02-23 19:54:15,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-02-23 19:54:15,492 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.9473684210526314) internal successors, (56), 9 states have internal predecessors, (56), 2 states have call successors, (9), 8 states have call predecessors, (9), 5 states have return successors, (7), 5 states have call predecessors, (7), 1 states have call successors, (7) Word has length 72 [2022-02-23 19:54:15,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 19:54:15,493 INFO L225 Difference]: With dead ends: 752 [2022-02-23 19:54:15,493 INFO L226 Difference]: Without dead ends: 733 [2022-02-23 19:54:15,493 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=54, Invalid=366, Unknown=0, NotChecked=0, Total=420 [2022-02-23 19:54:15,494 INFO L933 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 [2022-02-23 19:54:15,494 INFO L934 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] [2022-02-23 19:54:15,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 733 states. [2022-02-23 19:54:15,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 733 to 683. [2022-02-23 19:54:15,508 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) [2022-02-23 19:54:15,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 683 states to 683 states and 849 transitions. [2022-02-23 19:54:15,510 INFO L78 Accepts]: Start accepts. Automaton has 683 states and 849 transitions. Word has length 72 [2022-02-23 19:54:15,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 19:54:15,510 INFO L470 AbstractCegarLoop]: Abstraction has 683 states and 849 transitions. [2022-02-23 19:54:15,510 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.9473684210526314) internal successors, (56), 9 states have internal predecessors, (56), 2 states have call successors, (9), 8 states have call predecessors, (9), 5 states have return successors, (7), 5 states have call predecessors, (7), 1 states have call successors, (7) [2022-02-23 19:54:15,510 INFO L276 IsEmpty]: Start isEmpty. Operand 683 states and 849 transitions. [2022-02-23 19:54:15,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-02-23 19:54:15,511 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 19:54:15,511 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 19:54:15,511 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2022-02-23 19:54:15,511 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 19:54:15,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 19:54:15,512 INFO L85 PathProgramCache]: Analyzing trace with hash 1536662915, now seen corresponding path program 1 times [2022-02-23 19:54:15,512 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 19:54:15,512 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74587021] [2022-02-23 19:54:15,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 19:54:15,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 19:54:15,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:54:15,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-23 19:54:15,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:54:15,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-23 19:54:15,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:54:15,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-23 19:54:15,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:54:15,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-02-23 19:54:15,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:54:15,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-23 19:54:15,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:54:15,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-02-23 19:54:15,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:54:15,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-02-23 19:54:15,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:54:15,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-23 19:54:15,841 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 19:54:15,841 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [74587021] [2022-02-23 19:54:15,841 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [74587021] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-23 19:54:15,841 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-23 19:54:15,842 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-02-23 19:54:15,842 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041759363] [2022-02-23 19:54:15,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-23 19:54:15,842 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-02-23 19:54:15,842 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 19:54:15,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-02-23 19:54:15,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=296, Unknown=0, NotChecked=0, Total=342 [2022-02-23 19:54:15,843 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) [2022-02-23 19:54:17,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 19:54:17,935 INFO L93 Difference]: Finished difference Result 747 states and 941 transitions. [2022-02-23 19:54:17,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-02-23 19:54:17,936 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.789473684210526) internal successors, (53), 9 states have internal predecessors, (53), 2 states have call successors, (9), 8 states have call predecessors, (9), 5 states have return successors, (7), 5 states have call predecessors, (7), 1 states have call successors, (7) Word has length 69 [2022-02-23 19:54:17,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 19:54:17,937 INFO L225 Difference]: With dead ends: 747 [2022-02-23 19:54:17,937 INFO L226 Difference]: Without dead ends: 719 [2022-02-23 19:54:17,937 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=54, Invalid=366, Unknown=0, NotChecked=0, Total=420 [2022-02-23 19:54:17,938 INFO L933 BasicCegarLoop]: 440 mSDtfsCounter, 235 mSDsluCounter, 1934 mSDsCounter, 0 mSdLazyCounter, 4800 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s 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, 2.0s IncrementalHoareTripleChecker+Time [2022-02-23 19:54:17,938 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [237 Valid, 2374 Invalid, 4890 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 4800 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-02-23 19:54:17,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 719 states. [2022-02-23 19:54:17,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 719 to 671. [2022-02-23 19:54:17,944 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) [2022-02-23 19:54:17,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 671 states to 671 states and 833 transitions. [2022-02-23 19:54:17,945 INFO L78 Accepts]: Start accepts. Automaton has 671 states and 833 transitions. Word has length 69 [2022-02-23 19:54:17,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 19:54:17,946 INFO L470 AbstractCegarLoop]: Abstraction has 671 states and 833 transitions. [2022-02-23 19:54:17,946 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.789473684210526) internal successors, (53), 9 states have internal predecessors, (53), 2 states have call successors, (9), 8 states have call predecessors, (9), 5 states have return successors, (7), 5 states have call predecessors, (7), 1 states have call successors, (7) [2022-02-23 19:54:17,946 INFO L276 IsEmpty]: Start isEmpty. Operand 671 states and 833 transitions. [2022-02-23 19:54:17,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-02-23 19:54:17,947 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 19:54:17,947 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 19:54:17,947 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2022-02-23 19:54:17,947 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 19:54:17,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 19:54:17,948 INFO L85 PathProgramCache]: Analyzing trace with hash 300413188, now seen corresponding path program 1 times [2022-02-23 19:54:17,948 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 19:54:17,948 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130677698] [2022-02-23 19:54:17,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 19:54:17,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 19:54:17,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:54:18,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-23 19:54:18,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:54:18,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-23 19:54:18,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:54:18,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-23 19:54:18,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:54:18,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-02-23 19:54:18,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:54:18,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-02-23 19:54:18,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:54:18,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-02-23 19:54:18,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:54:18,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-02-23 19:54:18,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:54:18,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-23 19:54:18,169 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 19:54:18,169 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130677698] [2022-02-23 19:54:18,169 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2130677698] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-23 19:54:18,169 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-23 19:54:18,169 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-02-23 19:54:18,170 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42713334] [2022-02-23 19:54:18,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-23 19:54:18,170 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-02-23 19:54:18,170 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 19:54:18,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-02-23 19:54:18,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2022-02-23 19:54:18,171 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) [2022-02-23 19:54:19,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 19:54:19,710 INFO L93 Difference]: Finished difference Result 794 states and 1003 transitions. [2022-02-23 19:54:19,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-02-23 19:54:19,711 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.416666666666667) internal successors, (53), 5 states have internal predecessors, (53), 3 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 4 states have call predecessors, (7), 2 states have call successors, (7) Word has length 69 [2022-02-23 19:54:19,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 19:54:19,712 INFO L225 Difference]: With dead ends: 794 [2022-02-23 19:54:19,712 INFO L226 Difference]: Without dead ends: 794 [2022-02-23 19:54:19,712 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=137, Invalid=325, Unknown=0, NotChecked=0, Total=462 [2022-02-23 19:54:19,713 INFO L933 BasicCegarLoop]: 444 mSDtfsCounter, 1893 mSDsluCounter, 507 mSDsCounter, 0 mSdLazyCounter, 1453 mSolverCounterSat, 665 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s 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, 1.2s IncrementalHoareTripleChecker+Time [2022-02-23 19:54:19,713 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1900 Valid, 951 Invalid, 2118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [665 Valid, 1453 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-02-23 19:54:19,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 794 states. [2022-02-23 19:54:19,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 794 to 669. [2022-02-23 19:54:19,720 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) [2022-02-23 19:54:19,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 669 states to 669 states and 830 transitions. [2022-02-23 19:54:19,721 INFO L78 Accepts]: Start accepts. Automaton has 669 states and 830 transitions. Word has length 69 [2022-02-23 19:54:19,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 19:54:19,721 INFO L470 AbstractCegarLoop]: Abstraction has 669 states and 830 transitions. [2022-02-23 19:54:19,721 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.416666666666667) internal successors, (53), 5 states have internal predecessors, (53), 3 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 4 states have call predecessors, (7), 2 states have call successors, (7) [2022-02-23 19:54:19,721 INFO L276 IsEmpty]: Start isEmpty. Operand 669 states and 830 transitions. [2022-02-23 19:54:19,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-02-23 19:54:19,723 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 19:54:19,723 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 19:54:19,723 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2022-02-23 19:54:19,723 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 19:54:19,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 19:54:19,723 INFO L85 PathProgramCache]: Analyzing trace with hash 300444932, now seen corresponding path program 1 times [2022-02-23 19:54:19,723 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 19:54:19,723 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551186038] [2022-02-23 19:54:19,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 19:54:19,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 19:54:19,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:54:19,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-23 19:54:19,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:54:19,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-23 19:54:19,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:54:19,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-23 19:54:19,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:54:19,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-02-23 19:54:19,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:54:19,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-02-23 19:54:19,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:54:19,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-02-23 19:54:19,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:54:19,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-02-23 19:54:19,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:54:19,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-23 19:54:19,991 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 19:54:19,991 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551186038] [2022-02-23 19:54:19,991 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1551186038] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-23 19:54:19,991 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-23 19:54:19,992 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-02-23 19:54:19,992 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982230463] [2022-02-23 19:54:19,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-23 19:54:19,992 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-23 19:54:19,992 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 19:54:19,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-23 19:54:19,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=256, Unknown=0, NotChecked=0, Total=306 [2022-02-23 19:54:19,993 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) [2022-02-23 19:54:21,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 19:54:21,719 INFO L93 Difference]: Finished difference Result 724 states and 909 transitions. [2022-02-23 19:54:21,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-02-23 19:54:21,719 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.9444444444444446) internal successors, (53), 8 states have internal predecessors, (53), 2 states have call successors, (9), 9 states have call predecessors, (9), 4 states have return successors, (7), 4 states have call predecessors, (7), 1 states have call successors, (7) Word has length 69 [2022-02-23 19:54:21,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 19:54:21,720 INFO L225 Difference]: With dead ends: 724 [2022-02-23 19:54:21,720 INFO L226 Difference]: Without dead ends: 692 [2022-02-23 19:54:21,721 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=100, Invalid=656, Unknown=0, NotChecked=0, Total=756 [2022-02-23 19:54:21,721 INFO L933 BasicCegarLoop]: 384 mSDtfsCounter, 379 mSDsluCounter, 1252 mSDsCounter, 0 mSdLazyCounter, 3909 mSolverCounterSat, 121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s 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, 1.6s IncrementalHoareTripleChecker+Time [2022-02-23 19:54:21,721 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [392 Valid, 1636 Invalid, 4030 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [121 Valid, 3909 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-02-23 19:54:21,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 692 states. [2022-02-23 19:54:21,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 692 to 640. [2022-02-23 19:54:21,727 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) [2022-02-23 19:54:21,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 640 states to 640 states and 793 transitions. [2022-02-23 19:54:21,728 INFO L78 Accepts]: Start accepts. Automaton has 640 states and 793 transitions. Word has length 69 [2022-02-23 19:54:21,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 19:54:21,729 INFO L470 AbstractCegarLoop]: Abstraction has 640 states and 793 transitions. [2022-02-23 19:54:21,729 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.9444444444444446) internal successors, (53), 8 states have internal predecessors, (53), 2 states have call successors, (9), 9 states have call predecessors, (9), 4 states have return successors, (7), 4 states have call predecessors, (7), 1 states have call successors, (7) [2022-02-23 19:54:21,729 INFO L276 IsEmpty]: Start isEmpty. Operand 640 states and 793 transitions. [2022-02-23 19:54:21,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-02-23 19:54:21,730 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 19:54:21,730 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 19:54:21,730 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2022-02-23 19:54:21,730 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 19:54:21,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 19:54:21,731 INFO L85 PathProgramCache]: Analyzing trace with hash 1365836196, now seen corresponding path program 1 times [2022-02-23 19:54:21,731 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 19:54:21,731 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610470378] [2022-02-23 19:54:21,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 19:54:21,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 19:54:21,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:54:21,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-23 19:54:21,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:54:21,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-23 19:54:21,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:54:21,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-23 19:54:21,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:54:21,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-02-23 19:54:21,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:54:21,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-02-23 19:54:21,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:54:21,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-02-23 19:54:21,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:54:21,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-02-23 19:54:21,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:54:21,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-23 19:54:21,931 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 19:54:21,931 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610470378] [2022-02-23 19:54:21,931 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [610470378] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-23 19:54:21,931 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-23 19:54:21,932 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-02-23 19:54:21,932 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2147094501] [2022-02-23 19:54:21,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-23 19:54:21,932 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-02-23 19:54:21,932 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 19:54:21,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-02-23 19:54:21,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2022-02-23 19:54:21,932 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) [2022-02-23 19:54:22,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 19:54:22,938 INFO L93 Difference]: Finished difference Result 688 states and 865 transitions. [2022-02-23 19:54:22,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-02-23 19:54:22,938 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.416666666666667) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 69 [2022-02-23 19:54:22,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 19:54:22,939 INFO L225 Difference]: With dead ends: 688 [2022-02-23 19:54:22,939 INFO L226 Difference]: Without dead ends: 683 [2022-02-23 19:54:22,939 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2022-02-23 19:54:22,940 INFO L933 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, 0.9s IncrementalHoareTripleChecker+Time [2022-02-23 19:54:22,940 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [895 Valid, 1173 Invalid, 1606 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [333 Valid, 1273 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-02-23 19:54:22,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 683 states. [2022-02-23 19:54:22,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 683 to 635. [2022-02-23 19:54:22,946 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) [2022-02-23 19:54:22,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 635 states to 635 states and 786 transitions. [2022-02-23 19:54:22,946 INFO L78 Accepts]: Start accepts. Automaton has 635 states and 786 transitions. Word has length 69 [2022-02-23 19:54:22,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 19:54:22,947 INFO L470 AbstractCegarLoop]: Abstraction has 635 states and 786 transitions. [2022-02-23 19:54:22,947 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.416666666666667) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-02-23 19:54:22,947 INFO L276 IsEmpty]: Start isEmpty. Operand 635 states and 786 transitions. [2022-02-23 19:54:22,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-02-23 19:54:22,948 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 19:54:22,948 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 19:54:22,948 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2022-02-23 19:54:22,948 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 19:54:22,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 19:54:22,948 INFO L85 PathProgramCache]: Analyzing trace with hash -415492251, now seen corresponding path program 1 times [2022-02-23 19:54:22,948 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 19:54:22,948 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437554440] [2022-02-23 19:54:22,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 19:54:22,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 19:54:22,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:54:23,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-23 19:54:23,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:54:23,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-23 19:54:23,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:54:23,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-23 19:54:23,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:54:23,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-02-23 19:54:23,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:54:23,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-02-23 19:54:23,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:54:23,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-02-23 19:54:23,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:54:23,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-02-23 19:54:23,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:54:23,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-23 19:54:23,233 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 19:54:23,233 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437554440] [2022-02-23 19:54:23,233 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [437554440] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-23 19:54:23,233 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-23 19:54:23,233 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-02-23 19:54:23,234 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429908866] [2022-02-23 19:54:23,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-23 19:54:23,234 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-23 19:54:23,234 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 19:54:23,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-23 19:54:23,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=256, Unknown=0, NotChecked=0, Total=306 [2022-02-23 19:54:23,234 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) [2022-02-23 19:54:24,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 19:54:24,927 INFO L93 Difference]: Finished difference Result 707 states and 886 transitions. [2022-02-23 19:54:24,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-02-23 19:54:24,927 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.9444444444444446) internal successors, (53), 8 states have internal predecessors, (53), 3 states have call successors, (9), 9 states have call predecessors, (9), 4 states have return successors, (7), 5 states have call predecessors, (7), 2 states have call successors, (7) Word has length 69 [2022-02-23 19:54:24,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 19:54:24,929 INFO L225 Difference]: With dead ends: 707 [2022-02-23 19:54:24,929 INFO L226 Difference]: Without dead ends: 680 [2022-02-23 19:54:24,929 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=96, Invalid=456, Unknown=0, NotChecked=0, Total=552 [2022-02-23 19:54:24,931 INFO L933 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, 1.5s IncrementalHoareTripleChecker+Time [2022-02-23 19:54:24,931 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1123 Valid, 2155 Invalid, 3773 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [404 Valid, 3369 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-02-23 19:54:24,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 680 states. [2022-02-23 19:54:24,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 680 to 632. [2022-02-23 19:54:24,938 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) [2022-02-23 19:54:24,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 632 states to 632 states and 781 transitions. [2022-02-23 19:54:24,939 INFO L78 Accepts]: Start accepts. Automaton has 632 states and 781 transitions. Word has length 69 [2022-02-23 19:54:24,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 19:54:24,939 INFO L470 AbstractCegarLoop]: Abstraction has 632 states and 781 transitions. [2022-02-23 19:54:24,940 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.9444444444444446) internal successors, (53), 8 states have internal predecessors, (53), 3 states have call successors, (9), 9 states have call predecessors, (9), 4 states have return successors, (7), 5 states have call predecessors, (7), 2 states have call successors, (7) [2022-02-23 19:54:24,940 INFO L276 IsEmpty]: Start isEmpty. Operand 632 states and 781 transitions. [2022-02-23 19:54:24,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-02-23 19:54:24,941 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 19:54:24,941 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 19:54:24,941 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2022-02-23 19:54:24,941 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 19:54:24,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 19:54:24,942 INFO L85 PathProgramCache]: Analyzing trace with hash 135714178, now seen corresponding path program 1 times [2022-02-23 19:54:24,942 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 19:54:24,942 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136981282] [2022-02-23 19:54:24,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 19:54:24,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 19:54:24,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:54:25,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-23 19:54:25,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:54:25,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-23 19:54:25,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:54:25,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-23 19:54:25,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:54:25,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-02-23 19:54:25,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:54:25,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-23 19:54:25,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:54:25,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-02-23 19:54:25,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:54:25,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-02-23 19:54:25,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:54:25,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-02-23 19:54:25,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:54:25,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-23 19:54:25,141 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 19:54:25,141 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1136981282] [2022-02-23 19:54:25,141 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1136981282] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-23 19:54:25,141 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-23 19:54:25,141 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-02-23 19:54:25,141 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381775673] [2022-02-23 19:54:25,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-23 19:54:25,141 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-02-23 19:54:25,141 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 19:54:25,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-02-23 19:54:25,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2022-02-23 19:54:25,142 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) [2022-02-23 19:54:26,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 19:54:26,140 INFO L93 Difference]: Finished difference Result 684 states and 858 transitions. [2022-02-23 19:54:26,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-02-23 19:54:26,140 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.076923076923077) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 71 [2022-02-23 19:54:26,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 19:54:26,142 INFO L225 Difference]: With dead ends: 684 [2022-02-23 19:54:26,142 INFO L226 Difference]: Without dead ends: 684 [2022-02-23 19:54:26,142 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2022-02-23 19:54:26,142 INFO L933 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, 0.9s IncrementalHoareTripleChecker+Time [2022-02-23 19:54:26,142 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [690 Valid, 1162 Invalid, 1685 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [251 Valid, 1434 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-02-23 19:54:26,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 684 states. [2022-02-23 19:54:26,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 684 to 632. [2022-02-23 19:54:26,147 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) [2022-02-23 19:54:26,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 632 states to 632 states and 780 transitions. [2022-02-23 19:54:26,147 INFO L78 Accepts]: Start accepts. Automaton has 632 states and 780 transitions. Word has length 71 [2022-02-23 19:54:26,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 19:54:26,147 INFO L470 AbstractCegarLoop]: Abstraction has 632 states and 780 transitions. [2022-02-23 19:54:26,147 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.076923076923077) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-02-23 19:54:26,148 INFO L276 IsEmpty]: Start isEmpty. Operand 632 states and 780 transitions. [2022-02-23 19:54:26,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-02-23 19:54:26,148 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 19:54:26,148 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 19:54:26,148 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2022-02-23 19:54:26,149 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 19:54:26,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 19:54:26,149 INFO L85 PathProgramCache]: Analyzing trace with hash 1161206177, now seen corresponding path program 1 times [2022-02-23 19:54:26,149 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 19:54:26,149 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895427084] [2022-02-23 19:54:26,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 19:54:26,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 19:54:26,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:54:26,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-23 19:54:26,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:54:26,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-23 19:54:26,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:54:26,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-23 19:54:26,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:54:26,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-02-23 19:54:26,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:54:26,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-23 19:54:26,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:54:26,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-02-23 19:54:26,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:54:26,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-02-23 19:54:26,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:54:26,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-02-23 19:54:26,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:54:26,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-23 19:54:26,457 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 19:54:26,457 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895427084] [2022-02-23 19:54:26,457 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1895427084] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-23 19:54:26,457 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-23 19:54:26,457 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-02-23 19:54:26,457 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814517108] [2022-02-23 19:54:26,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-23 19:54:26,458 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-02-23 19:54:26,458 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 19:54:26,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-02-23 19:54:26,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=359, Unknown=0, NotChecked=0, Total=420 [2022-02-23 19:54:26,458 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) [2022-02-23 19:54:28,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 19:54:28,279 INFO L93 Difference]: Finished difference Result 717 states and 901 transitions. [2022-02-23 19:54:28,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-02-23 19:54:28,283 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 2.65) internal successors, (53), 10 states have internal predecessors, (53), 4 states have call successors, (10), 10 states have call predecessors, (10), 4 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) Word has length 71 [2022-02-23 19:54:28,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 19:54:28,285 INFO L225 Difference]: With dead ends: 717 [2022-02-23 19:54:28,285 INFO L226 Difference]: Without dead ends: 682 [2022-02-23 19:54:28,285 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=120, Invalid=692, Unknown=0, NotChecked=0, Total=812 [2022-02-23 19:54:28,285 INFO L933 BasicCegarLoop]: 429 mSDtfsCounter, 710 mSDsluCounter, 1987 mSDsCounter, 0 mSdLazyCounter, 4034 mSolverCounterSat, 263 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s 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 [2022-02-23 19:54:28,285 INFO L934 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] [2022-02-23 19:54:28,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 682 states. [2022-02-23 19:54:28,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 682 to 627. [2022-02-23 19:54:28,290 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) [2022-02-23 19:54:28,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 627 states to 627 states and 770 transitions. [2022-02-23 19:54:28,291 INFO L78 Accepts]: Start accepts. Automaton has 627 states and 770 transitions. Word has length 71 [2022-02-23 19:54:28,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 19:54:28,291 INFO L470 AbstractCegarLoop]: Abstraction has 627 states and 770 transitions. [2022-02-23 19:54:28,291 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 2.65) internal successors, (53), 10 states have internal predecessors, (53), 4 states have call successors, (10), 10 states have call predecessors, (10), 4 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) [2022-02-23 19:54:28,291 INFO L276 IsEmpty]: Start isEmpty. Operand 627 states and 770 transitions. [2022-02-23 19:54:28,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-02-23 19:54:28,292 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 19:54:28,292 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 19:54:28,292 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2022-02-23 19:54:28,292 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 19:54:28,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 19:54:28,293 INFO L85 PathProgramCache]: Analyzing trace with hash -1109131485, now seen corresponding path program 1 times [2022-02-23 19:54:28,293 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 19:54:28,293 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683195684] [2022-02-23 19:54:28,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 19:54:28,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 19:54:28,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:54:28,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-23 19:54:28,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:54:28,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-23 19:54:28,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:54:28,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-23 19:54:28,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:54:28,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-02-23 19:54:28,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:54:28,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-23 19:54:28,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:54:28,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-02-23 19:54:28,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:54:28,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-02-23 19:54:28,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:54:28,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-02-23 19:54:28,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:54:28,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-23 19:54:28,510 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 19:54:28,510 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683195684] [2022-02-23 19:54:28,510 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1683195684] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-23 19:54:28,510 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-23 19:54:28,510 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-02-23 19:54:28,510 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733069570] [2022-02-23 19:54:28,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-23 19:54:28,510 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-02-23 19:54:28,510 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 19:54:28,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-02-23 19:54:28,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2022-02-23 19:54:28,511 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) [2022-02-23 19:54:29,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 19:54:29,577 INFO L93 Difference]: Finished difference Result 677 states and 844 transitions. [2022-02-23 19:54:29,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-02-23 19:54:29,579 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.076923076923077) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 71 [2022-02-23 19:54:29,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 19:54:29,581 INFO L225 Difference]: With dead ends: 677 [2022-02-23 19:54:29,581 INFO L226 Difference]: Without dead ends: 671 [2022-02-23 19:54:29,581 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2022-02-23 19:54:29,581 INFO L933 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 [2022-02-23 19:54:29,582 INFO L934 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] [2022-02-23 19:54:29,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 671 states. [2022-02-23 19:54:29,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 671 to 621. [2022-02-23 19:54:29,588 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) [2022-02-23 19:54:29,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 621 states to 621 states and 762 transitions. [2022-02-23 19:54:29,588 INFO L78 Accepts]: Start accepts. Automaton has 621 states and 762 transitions. Word has length 71 [2022-02-23 19:54:29,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 19:54:29,588 INFO L470 AbstractCegarLoop]: Abstraction has 621 states and 762 transitions. [2022-02-23 19:54:29,589 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.076923076923077) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-02-23 19:54:29,589 INFO L276 IsEmpty]: Start isEmpty. Operand 621 states and 762 transitions. [2022-02-23 19:54:29,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-02-23 19:54:29,589 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 19:54:29,589 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 19:54:29,590 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2022-02-23 19:54:29,590 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 19:54:29,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 19:54:29,590 INFO L85 PathProgramCache]: Analyzing trace with hash -1256769401, now seen corresponding path program 1 times [2022-02-23 19:54:29,590 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 19:54:29,590 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307205827] [2022-02-23 19:54:29,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 19:54:29,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 19:54:29,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:54:29,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-23 19:54:29,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:54:29,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-23 19:54:29,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:54:29,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-23 19:54:29,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:54:29,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-02-23 19:54:29,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:54:29,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-02-23 19:54:29,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:54:29,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-02-23 19:54:29,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:54:29,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-02-23 19:54:29,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:54:29,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-23 19:54:29,884 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 19:54:29,884 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307205827] [2022-02-23 19:54:29,884 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [307205827] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-23 19:54:29,884 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-23 19:54:29,884 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-02-23 19:54:29,884 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975968649] [2022-02-23 19:54:29,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-23 19:54:29,884 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-23 19:54:29,884 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 19:54:29,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-23 19:54:29,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=256, Unknown=0, NotChecked=0, Total=306 [2022-02-23 19:54:29,885 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) [2022-02-23 19:54:31,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 19:54:31,625 INFO L93 Difference]: Finished difference Result 738 states and 910 transitions. [2022-02-23 19:54:31,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-02-23 19:54:31,625 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.0555555555555554) internal successors, (55), 8 states have internal predecessors, (55), 2 states have call successors, (9), 9 states have call predecessors, (9), 4 states have return successors, (7), 4 states have call predecessors, (7), 1 states have call successors, (7) Word has length 71 [2022-02-23 19:54:31,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 19:54:31,626 INFO L225 Difference]: With dead ends: 738 [2022-02-23 19:54:31,627 INFO L226 Difference]: Without dead ends: 713 [2022-02-23 19:54:31,627 INFO L932 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 [2022-02-23 19:54:31,627 INFO L933 BasicCegarLoop]: 382 mSDtfsCounter, 753 mSDsluCounter, 1635 mSDsCounter, 0 mSdLazyCounter, 3547 mSolverCounterSat, 264 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s 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, 1.5s IncrementalHoareTripleChecker+Time [2022-02-23 19:54:31,627 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [766 Valid, 2017 Invalid, 3811 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [264 Valid, 3547 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-02-23 19:54:31,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 713 states. [2022-02-23 19:54:31,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 713 to 627. [2022-02-23 19:54:31,632 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) [2022-02-23 19:54:31,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 627 states to 627 states and 764 transitions. [2022-02-23 19:54:31,632 INFO L78 Accepts]: Start accepts. Automaton has 627 states and 764 transitions. Word has length 71 [2022-02-23 19:54:31,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 19:54:31,633 INFO L470 AbstractCegarLoop]: Abstraction has 627 states and 764 transitions. [2022-02-23 19:54:31,633 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.0555555555555554) internal successors, (55), 8 states have internal predecessors, (55), 2 states have call successors, (9), 9 states have call predecessors, (9), 4 states have return successors, (7), 4 states have call predecessors, (7), 1 states have call successors, (7) [2022-02-23 19:54:31,633 INFO L276 IsEmpty]: Start isEmpty. Operand 627 states and 764 transitions. [2022-02-23 19:54:31,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-02-23 19:54:31,634 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 19:54:31,634 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 19:54:31,634 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2022-02-23 19:54:31,634 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 19:54:31,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 19:54:31,635 INFO L85 PathProgramCache]: Analyzing trace with hash 958622839, now seen corresponding path program 1 times [2022-02-23 19:54:31,635 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 19:54:31,635 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328429355] [2022-02-23 19:54:31,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 19:54:31,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 19:54:31,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:54:31,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-23 19:54:31,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:54:31,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-23 19:54:31,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:54:31,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-23 19:54:31,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:54:31,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-02-23 19:54:31,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:54:31,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-23 19:54:31,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:54:31,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-02-23 19:54:31,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:54:31,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-02-23 19:54:31,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:54:31,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-02-23 19:54:31,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:54:31,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-23 19:54:31,834 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 19:54:31,834 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328429355] [2022-02-23 19:54:31,834 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [328429355] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-23 19:54:31,834 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-23 19:54:31,834 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-02-23 19:54:31,835 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969051104] [2022-02-23 19:54:31,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-23 19:54:31,835 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-02-23 19:54:31,835 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 19:54:31,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-02-23 19:54:31,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2022-02-23 19:54:31,835 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) [2022-02-23 19:54:32,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 19:54:32,685 INFO L93 Difference]: Finished difference Result 676 states and 836 transitions. [2022-02-23 19:54:32,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-02-23 19:54:32,686 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.230769230769231) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 73 [2022-02-23 19:54:32,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 19:54:32,687 INFO L225 Difference]: With dead ends: 676 [2022-02-23 19:54:32,687 INFO L226 Difference]: Without dead ends: 665 [2022-02-23 19:54:32,687 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2022-02-23 19:54:32,687 INFO L933 BasicCegarLoop]: 399 mSDtfsCounter, 626 mSDsluCounter, 739 mSDsCounter, 0 mSdLazyCounter, 1164 mSolverCounterSat, 239 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s 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, 0.7s IncrementalHoareTripleChecker+Time [2022-02-23 19:54:32,688 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [627 Valid, 1138 Invalid, 1403 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [239 Valid, 1164 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-23 19:54:32,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 665 states. [2022-02-23 19:54:32,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 665 to 615. [2022-02-23 19:54:32,694 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) [2022-02-23 19:54:32,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 615 states to 615 states and 746 transitions. [2022-02-23 19:54:32,695 INFO L78 Accepts]: Start accepts. Automaton has 615 states and 746 transitions. Word has length 73 [2022-02-23 19:54:32,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 19:54:32,695 INFO L470 AbstractCegarLoop]: Abstraction has 615 states and 746 transitions. [2022-02-23 19:54:32,695 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.230769230769231) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-02-23 19:54:32,695 INFO L276 IsEmpty]: Start isEmpty. Operand 615 states and 746 transitions. [2022-02-23 19:54:32,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-02-23 19:54:32,697 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 19:54:32,697 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 19:54:32,697 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2022-02-23 19:54:32,697 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 19:54:32,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 19:54:32,697 INFO L85 PathProgramCache]: Analyzing trace with hash 1514534938, now seen corresponding path program 1 times [2022-02-23 19:54:32,697 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 19:54:32,697 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483482671] [2022-02-23 19:54:32,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 19:54:32,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 19:54:32,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:54:32,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-23 19:54:32,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:54:32,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-23 19:54:32,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:54:32,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-23 19:54:32,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:54:32,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-02-23 19:54:32,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:54:32,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-02-23 19:54:32,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:54:32,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-02-23 19:54:32,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:54:32,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-02-23 19:54:32,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:54:33,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-02-23 19:54:33,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:54:33,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-23 19:54:33,015 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 19:54:33,015 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483482671] [2022-02-23 19:54:33,015 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [483482671] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-23 19:54:33,015 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-23 19:54:33,015 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-02-23 19:54:33,015 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989694384] [2022-02-23 19:54:33,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-23 19:54:33,015 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-02-23 19:54:33,016 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 19:54:33,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-02-23 19:54:33,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=276, Unknown=0, NotChecked=0, Total=342 [2022-02-23 19:54:33,016 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) [2022-02-23 19:54:36,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 19:54:36,262 INFO L93 Difference]: Finished difference Result 1360 states and 1669 transitions. [2022-02-23 19:54:36,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-02-23 19:54:36,262 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.8947368421052633) internal successors, (55), 10 states have internal predecessors, (55), 5 states have call successors, (10), 10 states have call predecessors, (10), 4 states have return successors, (8), 6 states have call predecessors, (8), 4 states have call successors, (8) Word has length 73 [2022-02-23 19:54:36,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 19:54:36,264 INFO L225 Difference]: With dead ends: 1360 [2022-02-23 19:54:36,264 INFO L226 Difference]: Without dead ends: 1353 [2022-02-23 19:54:36,264 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 749 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=676, Invalid=2630, Unknown=0, NotChecked=0, Total=3306 [2022-02-23 19:54:36,264 INFO L933 BasicCegarLoop]: 418 mSDtfsCounter, 2588 mSDsluCounter, 1014 mSDsCounter, 0 mSdLazyCounter, 3985 mSolverCounterSat, 858 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s 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, 2.1s IncrementalHoareTripleChecker+Time [2022-02-23 19:54:36,264 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2593 Valid, 1432 Invalid, 4843 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [858 Valid, 3985 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-02-23 19:54:36,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1353 states. [2022-02-23 19:54:36,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1353 to 974. [2022-02-23 19:54:36,273 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) [2022-02-23 19:54:36,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 974 states to 974 states and 1197 transitions. [2022-02-23 19:54:36,274 INFO L78 Accepts]: Start accepts. Automaton has 974 states and 1197 transitions. Word has length 73 [2022-02-23 19:54:36,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 19:54:36,275 INFO L470 AbstractCegarLoop]: Abstraction has 974 states and 1197 transitions. [2022-02-23 19:54:36,275 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.8947368421052633) internal successors, (55), 10 states have internal predecessors, (55), 5 states have call successors, (10), 10 states have call predecessors, (10), 4 states have return successors, (8), 6 states have call predecessors, (8), 4 states have call successors, (8) [2022-02-23 19:54:36,275 INFO L276 IsEmpty]: Start isEmpty. Operand 974 states and 1197 transitions. [2022-02-23 19:54:36,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-02-23 19:54:36,276 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 19:54:36,276 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 19:54:36,276 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2022-02-23 19:54:36,276 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 19:54:36,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 19:54:36,276 INFO L85 PathProgramCache]: Analyzing trace with hash -293312583, now seen corresponding path program 1 times [2022-02-23 19:54:36,277 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 19:54:36,277 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126183921] [2022-02-23 19:54:36,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 19:54:36,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 19:54:36,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:54:36,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-23 19:54:36,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:54:36,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-23 19:54:36,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:54:36,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-23 19:54:36,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:54:36,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-02-23 19:54:36,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:54:36,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-02-23 19:54:36,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:54:36,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-02-23 19:54:36,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:54:36,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-02-23 19:54:36,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:54:36,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-02-23 19:54:36,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:54:36,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-23 19:54:36,481 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 19:54:36,481 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [126183921] [2022-02-23 19:54:36,481 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [126183921] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-23 19:54:36,481 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-23 19:54:36,481 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-02-23 19:54:36,481 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238413919] [2022-02-23 19:54:36,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-23 19:54:36,482 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-02-23 19:54:36,482 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 19:54:36,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-02-23 19:54:36,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2022-02-23 19:54:36,482 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) [2022-02-23 19:54:38,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 19:54:38,343 INFO L93 Difference]: Finished difference Result 1243 states and 1537 transitions. [2022-02-23 19:54:38,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-02-23 19:54:38,343 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.9285714285714284) internal successors, (55), 6 states have internal predecessors, (55), 5 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) Word has length 73 [2022-02-23 19:54:38,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 19:54:38,345 INFO L225 Difference]: With dead ends: 1243 [2022-02-23 19:54:38,345 INFO L226 Difference]: Without dead ends: 1243 [2022-02-23 19:54:38,345 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=199, Invalid=613, Unknown=0, NotChecked=0, Total=812 [2022-02-23 19:54:38,346 INFO L933 BasicCegarLoop]: 697 mSDtfsCounter, 2475 mSDsluCounter, 711 mSDsCounter, 0 mSdLazyCounter, 2172 mSolverCounterSat, 822 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s 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, 1.5s IncrementalHoareTripleChecker+Time [2022-02-23 19:54:38,346 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2479 Valid, 1408 Invalid, 2994 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [822 Valid, 2172 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-02-23 19:54:38,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1243 states. [2022-02-23 19:54:38,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1243 to 1067. [2022-02-23 19:54:38,370 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) [2022-02-23 19:54:38,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1067 states to 1067 states and 1309 transitions. [2022-02-23 19:54:38,372 INFO L78 Accepts]: Start accepts. Automaton has 1067 states and 1309 transitions. Word has length 73 [2022-02-23 19:54:38,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 19:54:38,372 INFO L470 AbstractCegarLoop]: Abstraction has 1067 states and 1309 transitions. [2022-02-23 19:54:38,372 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.9285714285714284) internal successors, (55), 6 states have internal predecessors, (55), 5 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2022-02-23 19:54:38,372 INFO L276 IsEmpty]: Start isEmpty. Operand 1067 states and 1309 transitions. [2022-02-23 19:54:38,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-02-23 19:54:38,374 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 19:54:38,374 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 19:54:38,374 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2022-02-23 19:54:38,374 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 19:54:38,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 19:54:38,375 INFO L85 PathProgramCache]: Analyzing trace with hash 1233732800, now seen corresponding path program 1 times [2022-02-23 19:54:38,375 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 19:54:38,375 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486489416] [2022-02-23 19:54:38,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 19:54:38,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 19:54:38,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:54:38,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-23 19:54:38,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:54:38,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-23 19:54:38,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:54:38,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-23 19:54:38,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:54:38,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-02-23 19:54:38,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:54:38,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-23 19:54:38,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:54:38,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-02-23 19:54:38,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:54:38,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-23 19:54:38,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:54:38,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-02-23 19:54:38,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:54:38,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-02-23 19:54:38,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:54:38,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-23 19:54:38,681 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 19:54:38,681 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486489416] [2022-02-23 19:54:38,681 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1486489416] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-23 19:54:38,681 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-23 19:54:38,681 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-02-23 19:54:38,681 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530408718] [2022-02-23 19:54:38,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-23 19:54:38,682 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-02-23 19:54:38,682 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 19:54:38,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-02-23 19:54:38,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=359, Unknown=0, NotChecked=0, Total=420 [2022-02-23 19:54:38,682 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) [2022-02-23 19:54:40,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 19:54:40,505 INFO L93 Difference]: Finished difference Result 1198 states and 1495 transitions. [2022-02-23 19:54:40,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-02-23 19:54:40,505 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 [2022-02-23 19:54:40,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 19:54:40,507 INFO L225 Difference]: With dead ends: 1198 [2022-02-23 19:54:40,507 INFO L226 Difference]: Without dead ends: 1159 [2022-02-23 19:54:40,507 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=120, Invalid=692, Unknown=0, NotChecked=0, Total=812 [2022-02-23 19:54:40,507 INFO L933 BasicCegarLoop]: 397 mSDtfsCounter, 590 mSDsluCounter, 2086 mSDsCounter, 0 mSdLazyCounter, 4016 mSolverCounterSat, 229 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s 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, 1.6s IncrementalHoareTripleChecker+Time [2022-02-23 19:54:40,508 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [593 Valid, 2483 Invalid, 4245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [229 Valid, 4016 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-02-23 19:54:40,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1159 states. [2022-02-23 19:54:40,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1159 to 1063. [2022-02-23 19:54:40,516 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) [2022-02-23 19:54:40,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1063 states to 1063 states and 1303 transitions. [2022-02-23 19:54:40,517 INFO L78 Accepts]: Start accepts. Automaton has 1063 states and 1303 transitions. Word has length 77 [2022-02-23 19:54:40,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 19:54:40,517 INFO L470 AbstractCegarLoop]: Abstraction has 1063 states and 1303 transitions. [2022-02-23 19:54:40,518 INFO L471 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) [2022-02-23 19:54:40,518 INFO L276 IsEmpty]: Start isEmpty. Operand 1063 states and 1303 transitions. [2022-02-23 19:54:40,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-02-23 19:54:40,519 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 19:54:40,519 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 19:54:40,519 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2022-02-23 19:54:40,519 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 19:54:40,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 19:54:40,520 INFO L85 PathProgramCache]: Analyzing trace with hash -7999414, now seen corresponding path program 1 times [2022-02-23 19:54:40,520 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 19:54:40,520 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489244545] [2022-02-23 19:54:40,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 19:54:40,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 19:54:40,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:54:40,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-23 19:54:40,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:54:40,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-23 19:54:40,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:54:40,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-23 19:54:40,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:54:40,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-02-23 19:54:40,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:54:40,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-23 19:54:40,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:54:40,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-23 19:54:40,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:54:40,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-02-23 19:54:40,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:54:40,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-02-23 19:54:40,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:54:40,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-02-23 19:54:40,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:54:40,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-23 19:54:40,749 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 19:54:40,749 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489244545] [2022-02-23 19:54:40,749 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [489244545] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-23 19:54:40,749 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-23 19:54:40,749 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-02-23 19:54:40,750 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613117478] [2022-02-23 19:54:40,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-23 19:54:40,750 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-02-23 19:54:40,750 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 19:54:40,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-02-23 19:54:40,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2022-02-23 19:54:40,750 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) [2022-02-23 19:54:41,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 19:54:41,954 INFO L93 Difference]: Finished difference Result 1155 states and 1435 transitions. [2022-02-23 19:54:41,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-02-23 19:54:41,955 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.6666666666666665) internal successors, (55), 5 states have internal predecessors, (55), 2 states have call successors, (11), 10 states have call predecessors, (11), 3 states have return successors, (9), 4 states have call predecessors, (9), 2 states have call successors, (9) Word has length 75 [2022-02-23 19:54:41,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 19:54:41,956 INFO L225 Difference]: With dead ends: 1155 [2022-02-23 19:54:41,956 INFO L226 Difference]: Without dead ends: 1125 [2022-02-23 19:54:41,957 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2022-02-23 19:54:41,958 INFO L933 BasicCegarLoop]: 386 mSDtfsCounter, 565 mSDsluCounter, 1174 mSDsCounter, 0 mSdLazyCounter, 2165 mSolverCounterSat, 220 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s 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 [2022-02-23 19:54:41,958 INFO L934 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] [2022-02-23 19:54:41,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1125 states. [2022-02-23 19:54:41,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1125 to 1045. [2022-02-23 19:54:41,966 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) [2022-02-23 19:54:41,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1045 states to 1045 states and 1275 transitions. [2022-02-23 19:54:41,967 INFO L78 Accepts]: Start accepts. Automaton has 1045 states and 1275 transitions. Word has length 75 [2022-02-23 19:54:41,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 19:54:41,968 INFO L470 AbstractCegarLoop]: Abstraction has 1045 states and 1275 transitions. [2022-02-23 19:54:41,968 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.6666666666666665) internal successors, (55), 5 states have internal predecessors, (55), 2 states have call successors, (11), 10 states have call predecessors, (11), 3 states have return successors, (9), 4 states have call predecessors, (9), 2 states have call successors, (9) [2022-02-23 19:54:41,968 INFO L276 IsEmpty]: Start isEmpty. Operand 1045 states and 1275 transitions. [2022-02-23 19:54:41,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-02-23 19:54:41,969 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 19:54:41,969 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 19:54:41,969 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2022-02-23 19:54:41,969 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 19:54:41,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 19:54:41,970 INFO L85 PathProgramCache]: Analyzing trace with hash -1981078137, now seen corresponding path program 1 times [2022-02-23 19:54:41,970 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 19:54:41,970 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333443320] [2022-02-23 19:54:41,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 19:54:41,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 19:54:41,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-23 19:54:41,980 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-02-23 19:54:41,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-23 19:54:42,036 INFO L138 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-02-23 19:54:42,037 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-02-23 19:54:42,037 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-02-23 19:54:42,039 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2022-02-23 19:54:42,042 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 19:54:42,045 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-02-23 19:54:42,156 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 07:54:42 BasicIcfg [2022-02-23 19:54:42,156 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-02-23 19:54:42,156 INFO L158 Benchmark]: Toolchain (without parser) took 138530.22ms. Allocated memory was 178.3MB in the beginning and 304.1MB in the end (delta: 125.8MB). Free memory was 124.3MB in the beginning and 134.2MB in the end (delta: -9.9MB). Peak memory consumption was 116.4MB. Max. memory is 8.0GB. [2022-02-23 19:54:42,156 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 178.3MB. Free memory was 142.7MB in the beginning and 142.7MB in the end (delta: 72.7kB). There was no memory consumed. Max. memory is 8.0GB. [2022-02-23 19:54:42,156 INFO L158 Benchmark]: CACSL2BoogieTranslator took 566.74ms. Allocated memory was 178.3MB in the beginning and 247.5MB in the end (delta: 69.2MB). Free memory was 124.1MB in the beginning and 205.1MB in the end (delta: -81.0MB). Peak memory consumption was 7.1MB. Max. memory is 8.0GB. [2022-02-23 19:54:42,157 INFO L158 Benchmark]: Boogie Preprocessor took 104.13ms. Allocated memory is still 247.5MB. Free memory was 205.1MB in the beginning and 199.8MB in the end (delta: 5.3MB). Peak memory consumption was 5.2MB. Max. memory is 8.0GB. [2022-02-23 19:54:42,157 INFO L158 Benchmark]: RCFGBuilder took 1187.14ms. Allocated memory is still 247.5MB. Free memory was 199.8MB in the beginning and 133.8MB in the end (delta: 66.0MB). Peak memory consumption was 66.1MB. Max. memory is 8.0GB. [2022-02-23 19:54:42,157 INFO L158 Benchmark]: IcfgTransformer took 71.71ms. Allocated memory is still 247.5MB. Free memory was 133.8MB in the beginning and 211.6MB in the end (delta: -77.9MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2022-02-23 19:54:42,157 INFO L158 Benchmark]: TraceAbstraction took 136591.69ms. Allocated memory was 247.5MB in the beginning and 304.1MB in the end (delta: 56.6MB). Free memory was 211.1MB in the beginning and 134.2MB in the end (delta: 76.9MB). Peak memory consumption was 134.0MB. Max. memory is 8.0GB. [2022-02-23 19:54:42,161 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 178.3MB. Free memory was 142.7MB in the beginning and 142.7MB in the end (delta: 72.7kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 566.74ms. Allocated memory was 178.3MB in the beginning and 247.5MB in the end (delta: 69.2MB). Free memory was 124.1MB in the beginning and 205.1MB in the end (delta: -81.0MB). Peak memory consumption was 7.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 104.13ms. Allocated memory is still 247.5MB. Free memory was 205.1MB in the beginning and 199.8MB in the end (delta: 5.3MB). Peak memory consumption was 5.2MB. Max. memory is 8.0GB. * RCFGBuilder took 1187.14ms. Allocated memory is still 247.5MB. Free memory was 199.8MB in the beginning and 133.8MB in the end (delta: 66.0MB). Peak memory consumption was 66.1MB. Max. memory is 8.0GB. * IcfgTransformer took 71.71ms. Allocated memory is still 247.5MB. Free memory was 133.8MB in the beginning and 211.6MB in the end (delta: -77.9MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * TraceAbstraction took 136591.69ms. Allocated memory was 247.5MB in the beginning and 304.1MB in the end (delta: 56.6MB). Free memory was 211.1MB in the beginning and 134.2MB in the end (delta: 76.9MB). Peak memory consumption was 134.0MB. 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: 136.4s, OverallIterations: 67, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 119.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 72101 SdHoareTripleChecker+Valid, 107.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 71682 mSDsluCounter, 116953 SdHoareTripleChecker+Invalid, 91.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 78126 mSDsCounter, 25195 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 186511 IncrementalHoareTripleChecker+Invalid, 211706 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 25195 mSolverCounterUnsat, 38827 mSDtfsCounter, 186511 mSolverCounterSat, 0.9s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1748 GetRequests, 647 SyntacticMatches, 14 SemanticMatches, 1087 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2756 ImplicationChecksByTransitivity, 17.6s 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: 1.0s AutomataMinimizationTime, 66 MinimizatonAttempts, 8496 StatesRemovedByMinimization, 66 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 13.9s 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! [2022-02-23 19:54:42,194 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...