/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCTransformed.xml -s ../../../trunk/examples/settings/loopacceleration/qvasr/qvasr_64.epf -i ../../../trunk/examples/svcomp/ntdrivers-simplified/cdaudio_simpl1.cil-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-34549b5 [2022-04-06 13:35:36,953 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-06 13:35:36,954 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-06 13:35:37,023 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-04-06 13:35:37,024 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-04-06 13:35:37,024 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-04-06 13:35:37,027 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-04-06 13:35:37,029 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-04-06 13:35:37,030 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-04-06 13:35:37,033 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-04-06 13:35:37,034 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-04-06 13:35:37,035 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-04-06 13:35:37,035 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-04-06 13:35:37,037 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-04-06 13:35:37,037 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-04-06 13:35:37,040 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-04-06 13:35:37,040 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-04-06 13:35:37,041 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-04-06 13:35:37,042 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-04-06 13:35:37,046 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-04-06 13:35:37,048 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-04-06 13:35:37,048 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-04-06 13:35:37,049 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-04-06 13:35:37,049 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-04-06 13:35:37,050 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-04-06 13:35:37,055 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-04-06 13:35:37,055 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-04-06 13:35:37,055 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-04-06 13:35:37,056 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-04-06 13:35:37,056 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-04-06 13:35:37,057 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2022-04-06 13:35:37,060 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-06 13:35:37,061 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-06 13:35:37,062 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-06 13:35:37,062 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/loopacceleration/qvasr/qvasr_64.epf [2022-04-06 13:35:37,087 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-06 13:35:37,087 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-06 13:35:37,088 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-04-06 13:35:37,088 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-04-06 13:35:37,089 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-04-06 13:35:37,089 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-04-06 13:35:37,089 INFO L138 SettingsManager]: * Use SBE=true [2022-04-06 13:35:37,089 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-06 13:35:37,089 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-06 13:35:37,089 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-06 13:35:37,090 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-06 13:35:37,090 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-06 13:35:37,090 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-06 13:35:37,090 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-06 13:35:37,090 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-06 13:35:37,090 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-06 13:35:37,090 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-06 13:35:37,090 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-04-06 13:35:37,090 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-06 13:35:37,090 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-06 13:35:37,090 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-06 13:35:37,091 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-04-06 13:35:37,091 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-04-06 13:35:37,091 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-04-06 13:35:37,091 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-04-06 13:35:37,091 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-04-06 13:35:37,091 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-04-06 13:35:37,091 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-04-06 13:35:37,092 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-04-06 13:35:37,092 INFO L138 SettingsManager]: * TransformationType=LOOP_ACCELERATION_QVASR WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-04-06 13:35:37,291 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-06 13:35:37,319 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-06 13:35:37,321 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-06 13:35:37,321 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-06 13:35:37,324 INFO L275 PluginConnector]: CDTParser initialized [2022-04-06 13:35:37,325 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ntdrivers-simplified/cdaudio_simpl1.cil-2.c [2022-04-06 13:35:37,390 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f377d72c0/4bc8ea794ec34c04bcbc733284184b3b/FLAGb3ae5ed53 [2022-04-06 13:35:37,867 INFO L306 CDTParser]: Found 1 translation units. [2022-04-06 13:35:37,867 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ntdrivers-simplified/cdaudio_simpl1.cil-2.c [2022-04-06 13:35:37,892 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f377d72c0/4bc8ea794ec34c04bcbc733284184b3b/FLAGb3ae5ed53 [2022-04-06 13:35:37,902 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f377d72c0/4bc8ea794ec34c04bcbc733284184b3b [2022-04-06 13:35:37,904 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-06 13:35:37,905 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-04-06 13:35:37,907 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-06 13:35:37,907 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-06 13:35:37,921 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-06 13:35:37,922 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.04 01:35:37" (1/1) ... [2022-04-06 13:35:37,923 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42ba89d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 01:35:37, skipping insertion in model container [2022-04-06 13:35:37,923 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.04 01:35:37" (1/1) ... [2022-04-06 13:35:37,928 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-06 13:35:38,002 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-06 13:35:38,141 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-2.c[2073,2086] [2022-04-06 13:35:38,296 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-06 13:35:38,303 INFO L203 MainTranslator]: Completed pre-run [2022-04-06 13:35:38,323 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-2.c[2073,2086] [2022-04-06 13:35:38,374 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-06 13:35:38,389 INFO L208 MainTranslator]: Completed translation [2022-04-06 13:35:38,390 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 01:35:38 WrapperNode [2022-04-06 13:35:38,391 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-06 13:35:38,392 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-06 13:35:38,392 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-06 13:35:38,392 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-06 13:35:38,401 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 01:35:38" (1/1) ... [2022-04-06 13:35:38,401 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 01:35:38" (1/1) ... [2022-04-06 13:35:38,417 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 01:35:38" (1/1) ... [2022-04-06 13:35:38,417 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 01:35:38" (1/1) ... [2022-04-06 13:35:38,438 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 01:35:38" (1/1) ... [2022-04-06 13:35:38,448 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 01:35:38" (1/1) ... [2022-04-06 13:35:38,452 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 01:35:38" (1/1) ... [2022-04-06 13:35:38,458 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-06 13:35:38,459 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-06 13:35:38,459 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-06 13:35:38,459 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-06 13:35:38,460 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 01:35:38" (1/1) ... [2022-04-06 13:35:38,466 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-06 13:35:38,491 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 13:35:38,533 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-04-06 13:35:38,552 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-04-06 13:35:38,575 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-04-06 13:35:38,575 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-06 13:35:38,576 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-04-06 13:35:38,576 INFO L138 BoogieDeclarations]: Found implementation of procedure errorFn [2022-04-06 13:35:38,576 INFO L138 BoogieDeclarations]: Found implementation of procedure _BLAST_init [2022-04-06 13:35:38,576 INFO L138 BoogieDeclarations]: Found implementation of procedure SendSrbSynchronous [2022-04-06 13:35:38,576 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioSignalCompletion [2022-04-06 13:35:38,577 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioStartDevice [2022-04-06 13:35:38,577 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioPnp [2022-04-06 13:35:38,577 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioDeviceControl [2022-04-06 13:35:38,577 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioSendToNextDriver [2022-04-06 13:35:38,577 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioIsPlayActive [2022-04-06 13:35:38,578 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudio535DeviceControl [2022-04-06 13:35:38,578 INFO L138 BoogieDeclarations]: Found implementation of procedure AG_SetStatusAndReturn [2022-04-06 13:35:38,578 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudio435DeviceControl [2022-04-06 13:35:38,578 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioAtapiDeviceControl [2022-04-06 13:35:38,578 INFO L138 BoogieDeclarations]: Found implementation of procedure HpCdrProcessLastSession [2022-04-06 13:35:38,578 INFO L138 BoogieDeclarations]: Found implementation of procedure HPCdrCompletion [2022-04-06 13:35:38,578 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioHPCdrDeviceControl [2022-04-06 13:35:38,578 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioForwardIrpSynchronous [2022-04-06 13:35:38,578 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioUnload [2022-04-06 13:35:38,578 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioPower [2022-04-06 13:35:38,578 INFO L138 BoogieDeclarations]: Found implementation of procedure stub_driver_init [2022-04-06 13:35:38,578 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-04-06 13:35:38,578 INFO L138 BoogieDeclarations]: Found implementation of procedure stubMoreProcessingRequired [2022-04-06 13:35:38,578 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCallDriver [2022-04-06 13:35:38,579 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCompleteRequest [2022-04-06 13:35:38,579 INFO L138 BoogieDeclarations]: Found implementation of procedure KeSetEvent [2022-04-06 13:35:38,579 INFO L138 BoogieDeclarations]: Found implementation of procedure KeWaitForSingleObject [2022-04-06 13:35:38,579 INFO L138 BoogieDeclarations]: Found implementation of procedure PoCallDriver [2022-04-06 13:35:38,579 INFO L138 BoogieDeclarations]: Found implementation of procedure ZwClose [2022-04-06 13:35:38,579 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-04-06 13:35:38,579 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-04-06 13:35:38,579 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-04-06 13:35:38,579 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-06 13:35:38,579 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2022-04-06 13:35:38,579 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-04-06 13:35:38,579 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2022-04-06 13:35:38,579 INFO L130 BoogieDeclarations]: Found specification of procedure SendSrbSynchronous [2022-04-06 13:35:38,580 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioSignalCompletion [2022-04-06 13:35:38,580 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioStartDevice [2022-04-06 13:35:38,580 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioPnp [2022-04-06 13:35:38,580 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioDeviceControl [2022-04-06 13:35:38,580 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioSendToNextDriver [2022-04-06 13:35:38,580 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioIsPlayActive [2022-04-06 13:35:38,580 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudio535DeviceControl [2022-04-06 13:35:38,580 INFO L130 BoogieDeclarations]: Found specification of procedure AG_SetStatusAndReturn [2022-04-06 13:35:38,580 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudio435DeviceControl [2022-04-06 13:35:38,580 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioAtapiDeviceControl [2022-04-06 13:35:38,580 INFO L130 BoogieDeclarations]: Found specification of procedure HPCdrCompletion [2022-04-06 13:35:38,581 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioHPCdrDeviceControl [2022-04-06 13:35:38,581 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioForwardIrpSynchronous [2022-04-06 13:35:38,581 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioPower [2022-04-06 13:35:38,581 INFO L130 BoogieDeclarations]: Found specification of procedure IofCallDriver [2022-04-06 13:35:38,581 INFO L130 BoogieDeclarations]: Found specification of procedure KeSetEvent [2022-04-06 13:35:38,581 INFO L130 BoogieDeclarations]: Found specification of procedure KeWaitForSingleObject [2022-04-06 13:35:38,581 INFO L130 BoogieDeclarations]: Found specification of procedure PoCallDriver [2022-04-06 13:35:38,581 INFO L130 BoogieDeclarations]: Found specification of procedure ZwClose [2022-04-06 13:35:38,581 INFO L130 BoogieDeclarations]: Found specification of procedure IofCompleteRequest [2022-04-06 13:35:38,582 INFO L130 BoogieDeclarations]: Found specification of procedure errorFn [2022-04-06 13:35:38,582 INFO L130 BoogieDeclarations]: Found specification of procedure _BLAST_init [2022-04-06 13:35:38,582 INFO L130 BoogieDeclarations]: Found specification of procedure HpCdrProcessLastSession [2022-04-06 13:35:38,582 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioUnload [2022-04-06 13:35:38,582 INFO L130 BoogieDeclarations]: Found specification of procedure stub_driver_init [2022-04-06 13:35:38,582 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-04-06 13:35:38,582 INFO L130 BoogieDeclarations]: Found specification of procedure stubMoreProcessingRequired [2022-04-06 13:35:38,583 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-04-06 13:35:38,583 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-06 13:35:38,583 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-06 13:35:38,583 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-06 13:35:38,583 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-04-06 13:35:38,583 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-06 13:35:38,795 INFO L234 CfgBuilder]: Building ICFG [2022-04-06 13:35:38,799 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-06 13:35:38,898 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-06 13:35:38,942 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume !false; [2022-04-06 13:35:38,942 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##14: assume false; [2022-04-06 13:35:38,945 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-06 13:35:38,966 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##18: assume !false; [2022-04-06 13:35:38,966 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##17: assume false; [2022-04-06 13:35:38,980 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-06 13:35:38,990 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##16: assume !false; [2022-04-06 13:35:38,990 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume false; [2022-04-06 13:35:39,027 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-06 13:35:39,051 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##6: assume !false; [2022-04-06 13:35:39,051 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint L305: #res := 0; [2022-04-06 13:35:39,051 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##5: assume false; [2022-04-06 13:35:39,054 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-06 13:35:39,141 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##21: assume false; [2022-04-06 13:35:39,141 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##22: assume !false; [2022-04-06 13:35:39,142 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-06 13:35:39,160 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##21: assume !false; [2022-04-06 13:35:39,160 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##20: assume false; [2022-04-06 13:35:39,180 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-06 13:35:39,190 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##10: assume !false; [2022-04-06 13:35:39,191 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##9: assume false; [2022-04-06 13:35:39,194 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-06 13:35:39,323 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##26: assume !false; [2022-04-06 13:35:39,323 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##25: assume false; [2022-04-06 13:35:39,331 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-06 13:35:39,334 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-04-06 13:35:39,335 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-04-06 13:35:39,356 INFO L275 CfgBuilder]: Performing block encoding [2022-04-06 13:35:39,369 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-06 13:35:39,369 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-04-06 13:35:39,372 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.04 01:35:39 BoogieIcfgContainer [2022-04-06 13:35:39,372 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-06 13:35:39,373 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-04-06 13:35:39,374 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-04-06 13:35:39,375 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-04-06 13:35:39,377 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.04 01:35:39" (1/1) ... [2022-04-06 13:35:39,379 INFO L168 ansformationObserver]: Applying ICFG transformation LOOP_ACCELERATION_QVASR [2022-04-06 13:35:39,429 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 06.04 01:35:39 BasicIcfg [2022-04-06 13:35:39,430 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-04-06 13:35:39,432 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-06 13:35:39,432 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-06 13:35:39,434 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-06 13:35:39,434 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.04 01:35:37" (1/4) ... [2022-04-06 13:35:39,435 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74421cb1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.04 01:35:39, skipping insertion in model container [2022-04-06 13:35:39,435 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 01:35:38" (2/4) ... [2022-04-06 13:35:39,435 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74421cb1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.04 01:35:39, skipping insertion in model container [2022-04-06 13:35:39,435 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.04 01:35:39" (3/4) ... [2022-04-06 13:35:39,436 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74421cb1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.04 01:35:39, skipping insertion in model container [2022-04-06 13:35:39,436 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 06.04 01:35:39" (4/4) ... [2022-04-06 13:35:39,436 INFO L111 eAbstractionObserver]: Analyzing ICFG cdaudio_simpl1.cil-2.cqvasr [2022-04-06 13:35:39,440 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-04-06 13:35:39,441 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-04-06 13:35:39,484 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-06 13:35:39,490 INFO L340 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP [2022-04-06 13:35:39,490 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-04-06 13:35:39,527 INFO L276 IsEmpty]: Start isEmpty. Operand has 515 states, 382 states have (on average 1.486910994764398) internal successors, (568), 402 states have internal predecessors, (568), 102 states have call successors, (102), 29 states have call predecessors, (102), 29 states have return successors, (102), 98 states have call predecessors, (102), 102 states have call successors, (102) [2022-04-06 13:35:39,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-04-06 13:35:39,532 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:35:39,532 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 13:35:39,534 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:35:39,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:35:39,543 INFO L85 PathProgramCache]: Analyzing trace with hash -1376594176, now seen corresponding path program 1 times [2022-04-06 13:35:39,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:35:39,549 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485887261] [2022-04-06 13:35:39,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:35:39,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:35:39,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:35:39,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:35:39,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:35:39,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:35:39,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:35:39,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 13:35:39,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:35:39,863 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485887261] [2022-04-06 13:35:39,864 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1485887261] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:35:39,864 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 13:35:39,864 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-06 13:35:39,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146538905] [2022-04-06 13:35:39,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:35:39,868 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-04-06 13:35:39,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:35:39,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-04-06 13:35:39,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-04-06 13:35:39,893 INFO L87 Difference]: Start difference. First operand has 515 states, 382 states have (on average 1.486910994764398) internal successors, (568), 402 states have internal predecessors, (568), 102 states have call successors, (102), 29 states have call predecessors, (102), 29 states have return successors, (102), 98 states have call predecessors, (102), 102 states have call successors, (102) 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) [2022-04-06 13:35:41,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:35:41,544 INFO L93 Difference]: Finished difference Result 1043 states and 1675 transitions. [2022-04-06 13:35:41,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-06 13:35:41,546 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 [2022-04-06 13:35:41,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:35:41,558 INFO L225 Difference]: With dead ends: 1043 [2022-04-06 13:35:41,558 INFO L226 Difference]: Without dead ends: 663 [2022-04-06 13:35:41,563 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-04-06 13:35:41,565 INFO L913 BasicCegarLoop]: 738 mSDtfsCounter, 770 mSDsluCounter, 265 mSDsCounter, 0 mSdLazyCounter, 1132 mSolverCounterSat, 308 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 771 SdHoareTripleChecker+Valid, 1003 SdHoareTripleChecker+Invalid, 1440 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 308 IncrementalHoareTripleChecker+Valid, 1132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-04-06 13:35:41,565 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [771 Valid, 1003 Invalid, 1440 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [308 Valid, 1132 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-04-06 13:35:41,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 663 states. [2022-04-06 13:35:41,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 663 to 507. [2022-04-06 13:35:41,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 507 states, 377 states have (on average 1.4562334217506632) internal successors, (549), 395 states have internal predecessors, (549), 102 states have call successors, (102), 29 states have call predecessors, (102), 27 states have return successors, (86), 86 states have call predecessors, (86), 86 states have call successors, (86) [2022-04-06 13:35:41,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 507 states to 507 states and 737 transitions. [2022-04-06 13:35:41,637 INFO L78 Accepts]: Start accepts. Automaton has 507 states and 737 transitions. Word has length 20 [2022-04-06 13:35:41,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:35:41,637 INFO L478 AbstractCegarLoop]: Abstraction has 507 states and 737 transitions. [2022-04-06 13:35:41,637 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 3 states have internal predecessors, (14), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-04-06 13:35:41,638 INFO L276 IsEmpty]: Start isEmpty. Operand 507 states and 737 transitions. [2022-04-06 13:35:41,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-04-06 13:35:41,638 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:35:41,638 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 13:35:41,639 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-04-06 13:35:41,639 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:35:41,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:35:41,639 INFO L85 PathProgramCache]: Analyzing trace with hash 752029052, now seen corresponding path program 1 times [2022-04-06 13:35:41,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:35:41,639 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145686135] [2022-04-06 13:35:41,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:35:41,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:35:41,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:35:41,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:35:41,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:35:41,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:35:41,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:35:41,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 13:35:41,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:35:41,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 13:35:41,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:35:41,748 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145686135] [2022-04-06 13:35:41,749 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2145686135] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:35:41,749 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 13:35:41,749 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-04-06 13:35:41,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959124124] [2022-04-06 13:35:41,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:35:41,750 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-06 13:35:41,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:35:41,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-06 13:35:41,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-04-06 13:35:41,750 INFO L87 Difference]: Start difference. First operand 507 states and 737 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) [2022-04-06 13:35:43,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:35:43,100 INFO L93 Difference]: Finished difference Result 961 states and 1420 transitions. [2022-04-06 13:35:43,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-06 13:35:43,101 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 [2022-04-06 13:35:43,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:35:43,106 INFO L225 Difference]: With dead ends: 961 [2022-04-06 13:35:43,106 INFO L226 Difference]: Without dead ends: 842 [2022-04-06 13:35:43,107 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-04-06 13:35:43,107 INFO L913 BasicCegarLoop]: 833 mSDtfsCounter, 1495 mSDsluCounter, 167 mSDsCounter, 0 mSdLazyCounter, 913 mSolverCounterSat, 428 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1499 SdHoareTripleChecker+Valid, 1000 SdHoareTripleChecker+Invalid, 1341 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 428 IncrementalHoareTripleChecker+Valid, 913 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-04-06 13:35:43,108 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1499 Valid, 1000 Invalid, 1341 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [428 Valid, 913 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-04-06 13:35:43,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 842 states. [2022-04-06 13:35:43,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 842 to 662. [2022-04-06 13:35:43,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 662 states, 501 states have (on average 1.407185628742515) internal successors, (705), 508 states have internal predecessors, (705), 111 states have call successors, (111), 40 states have call predecessors, (111), 49 states have return successors, (145), 119 states have call predecessors, (145), 99 states have call successors, (145) [2022-04-06 13:35:43,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 662 states to 662 states and 961 transitions. [2022-04-06 13:35:43,154 INFO L78 Accepts]: Start accepts. Automaton has 662 states and 961 transitions. Word has length 25 [2022-04-06 13:35:43,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:35:43,154 INFO L478 AbstractCegarLoop]: Abstraction has 662 states and 961 transitions. [2022-04-06 13:35:43,154 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 3 states have internal predecessors, (16), 3 states have call successors, (6), 6 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-04-06 13:35:43,154 INFO L276 IsEmpty]: Start isEmpty. Operand 662 states and 961 transitions. [2022-04-06 13:35:43,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-04-06 13:35:43,156 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:35:43,156 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 13:35:43,156 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-04-06 13:35:43,156 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:35:43,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:35:43,156 INFO L85 PathProgramCache]: Analyzing trace with hash -2092358377, now seen corresponding path program 1 times [2022-04-06 13:35:43,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:35:43,157 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944392350] [2022-04-06 13:35:43,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:35:43,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:35:43,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:35:43,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:35:43,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:35:43,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:35:43,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:35:43,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 13:35:43,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:35:43,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 13:35:43,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:35:43,282 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944392350] [2022-04-06 13:35:43,282 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1944392350] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:35:43,282 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 13:35:43,282 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-04-06 13:35:43,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334484657] [2022-04-06 13:35:43,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:35:43,283 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-06 13:35:43,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:35:43,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-06 13:35:43,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-04-06 13:35:43,284 INFO L87 Difference]: Start difference. First operand 662 states and 961 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) [2022-04-06 13:35:44,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:35:44,386 INFO L93 Difference]: Finished difference Result 1142 states and 1641 transitions. [2022-04-06 13:35:44,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-06 13:35:44,390 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 [2022-04-06 13:35:44,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:35:44,398 INFO L225 Difference]: With dead ends: 1142 [2022-04-06 13:35:44,398 INFO L226 Difference]: Without dead ends: 966 [2022-04-06 13:35:44,399 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-04-06 13:35:44,403 INFO L913 BasicCegarLoop]: 722 mSDtfsCounter, 1919 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 703 mSolverCounterSat, 543 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1929 SdHoareTripleChecker+Valid, 860 SdHoareTripleChecker+Invalid, 1246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 543 IncrementalHoareTripleChecker+Valid, 703 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-04-06 13:35:44,403 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1929 Valid, 860 Invalid, 1246 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [543 Valid, 703 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-04-06 13:35:44,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 966 states. [2022-04-06 13:35:44,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 966 to 787. [2022-04-06 13:35:44,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 787 states, 610 states have (on average 1.4032786885245903) internal successors, (856), 613 states have internal predecessors, (856), 113 states have call successors, (113), 46 states have call predecessors, (113), 63 states have return successors, (163), 130 states have call predecessors, (163), 104 states have call successors, (163) [2022-04-06 13:35:44,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 787 states to 787 states and 1132 transitions. [2022-04-06 13:35:44,444 INFO L78 Accepts]: Start accepts. Automaton has 787 states and 1132 transitions. Word has length 30 [2022-04-06 13:35:44,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:35:44,444 INFO L478 AbstractCegarLoop]: Abstraction has 787 states and 1132 transitions. [2022-04-06 13:35:44,444 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 3 states have internal predecessors, (19), 3 states have call successors, (8), 6 states have call predecessors, (8), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-04-06 13:35:44,444 INFO L276 IsEmpty]: Start isEmpty. Operand 787 states and 1132 transitions. [2022-04-06 13:35:44,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-04-06 13:35:44,446 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:35:44,446 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 13:35:44,446 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-04-06 13:35:44,446 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:35:44,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:35:44,446 INFO L85 PathProgramCache]: Analyzing trace with hash -1387045423, now seen corresponding path program 1 times [2022-04-06 13:35:44,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:35:44,447 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157822795] [2022-04-06 13:35:44,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:35:44,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:35:44,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:35:44,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:35:44,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:35:44,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:35:44,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:35:44,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 13:35:44,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:35:44,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 13:35:44,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:35:44,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157822795] [2022-04-06 13:35:44,555 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [157822795] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:35:44,555 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 13:35:44,556 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-04-06 13:35:44,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679422660] [2022-04-06 13:35:44,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:35:44,556 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-06 13:35:44,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:35:44,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-06 13:35:44,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-04-06 13:35:44,557 INFO L87 Difference]: Start difference. First operand 787 states and 1132 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) [2022-04-06 13:35:46,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:35:46,426 INFO L93 Difference]: Finished difference Result 1624 states and 2440 transitions. [2022-04-06 13:35:46,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-04-06 13:35:46,426 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 [2022-04-06 13:35:46,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:35:46,431 INFO L225 Difference]: With dead ends: 1624 [2022-04-06 13:35:46,432 INFO L226 Difference]: Without dead ends: 1340 [2022-04-06 13:35:46,432 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-04-06 13:35:46,433 INFO L913 BasicCegarLoop]: 1003 mSDtfsCounter, 1092 mSDsluCounter, 275 mSDsCounter, 0 mSdLazyCounter, 1913 mSolverCounterSat, 374 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1095 SdHoareTripleChecker+Valid, 1278 SdHoareTripleChecker+Invalid, 2287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 374 IncrementalHoareTripleChecker+Valid, 1913 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-04-06 13:35:46,433 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1095 Valid, 1278 Invalid, 2287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [374 Valid, 1913 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-04-06 13:35:46,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1340 states. [2022-04-06 13:35:46,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1340 to 905. [2022-04-06 13:35:46,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 905 states, 707 states have (on average 1.413012729844413) internal successors, (999), 709 states have internal predecessors, (999), 126 states have call successors, (126), 54 states have call predecessors, (126), 71 states have return successors, (220), 144 states have call predecessors, (220), 117 states have call successors, (220) [2022-04-06 13:35:46,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 905 states to 905 states and 1345 transitions. [2022-04-06 13:35:46,480 INFO L78 Accepts]: Start accepts. Automaton has 905 states and 1345 transitions. Word has length 31 [2022-04-06 13:35:46,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:35:46,481 INFO L478 AbstractCegarLoop]: Abstraction has 905 states and 1345 transitions. [2022-04-06 13:35:46,481 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 3 states have internal predecessors, (21), 2 states have call successors, (7), 5 states have call predecessors, (7), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-04-06 13:35:46,481 INFO L276 IsEmpty]: Start isEmpty. Operand 905 states and 1345 transitions. [2022-04-06 13:35:46,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-04-06 13:35:46,482 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:35:46,482 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 13:35:46,482 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-04-06 13:35:46,482 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:35:46,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:35:46,483 INFO L85 PathProgramCache]: Analyzing trace with hash -81256447, now seen corresponding path program 1 times [2022-04-06 13:35:46,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:35:46,483 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875309309] [2022-04-06 13:35:46,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:35:46,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:35:46,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:35:46,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:35:46,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:35:46,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:35:46,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:35:46,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 13:35:46,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:35:46,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 13:35:46,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:35:46,654 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875309309] [2022-04-06 13:35:46,654 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [875309309] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:35:46,654 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 13:35:46,654 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-04-06 13:35:46,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524876160] [2022-04-06 13:35:46,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:35:46,654 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-04-06 13:35:46,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:35:46,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-04-06 13:35:46,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-04-06 13:35:46,655 INFO L87 Difference]: Start difference. First operand 905 states and 1345 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) [2022-04-06 13:35:48,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:35:48,094 INFO L93 Difference]: Finished difference Result 1626 states and 2474 transitions. [2022-04-06 13:35:48,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-04-06 13:35:48,094 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 [2022-04-06 13:35:48,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:35:48,106 INFO L225 Difference]: With dead ends: 1626 [2022-04-06 13:35:48,106 INFO L226 Difference]: Without dead ends: 1042 [2022-04-06 13:35:48,107 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2022-04-06 13:35:48,108 INFO L913 BasicCegarLoop]: 731 mSDtfsCounter, 2117 mSDsluCounter, 259 mSDsCounter, 0 mSdLazyCounter, 1081 mSolverCounterSat, 700 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2123 SdHoareTripleChecker+Valid, 990 SdHoareTripleChecker+Invalid, 1781 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 700 IncrementalHoareTripleChecker+Valid, 1081 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-04-06 13:35:48,109 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [2123 Valid, 990 Invalid, 1781 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [700 Valid, 1081 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-04-06 13:35:48,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1042 states. [2022-04-06 13:35:48,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1042 to 833. [2022-04-06 13:35:48,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 833 states, 648 states have (on average 1.3981481481481481) internal successors, (906), 651 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) [2022-04-06 13:35:48,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 833 states to 833 states and 1200 transitions. [2022-04-06 13:35:48,152 INFO L78 Accepts]: Start accepts. Automaton has 833 states and 1200 transitions. Word has length 32 [2022-04-06 13:35:48,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:35:48,153 INFO L478 AbstractCegarLoop]: Abstraction has 833 states and 1200 transitions. [2022-04-06 13:35:48,154 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 6 states have internal predecessors, (22), 4 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-04-06 13:35:48,154 INFO L276 IsEmpty]: Start isEmpty. Operand 833 states and 1200 transitions. [2022-04-06 13:35:48,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-04-06 13:35:48,156 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:35:48,156 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 13:35:48,156 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-04-06 13:35:48,156 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:35:48,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:35:48,156 INFO L85 PathProgramCache]: Analyzing trace with hash 2003772890, now seen corresponding path program 1 times [2022-04-06 13:35:48,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:35:48,156 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141342747] [2022-04-06 13:35:48,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:35:48,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:35:48,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:35:48,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:35:48,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:35:48,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:35:48,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:35:48,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 13:35:48,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:35:48,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 13:35:48,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:35:48,280 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141342747] [2022-04-06 13:35:48,280 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [141342747] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:35:48,280 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 13:35:48,281 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-04-06 13:35:48,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470775936] [2022-04-06 13:35:48,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:35:48,281 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-06 13:35:48,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:35:48,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-06 13:35:48,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-04-06 13:35:48,282 INFO L87 Difference]: Start difference. First operand 833 states and 1200 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) [2022-04-06 13:35:49,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:35:49,947 INFO L93 Difference]: Finished difference Result 963 states and 1422 transitions. [2022-04-06 13:35:49,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-06 13:35:49,948 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 [2022-04-06 13:35:49,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:35:49,970 INFO L225 Difference]: With dead ends: 963 [2022-04-06 13:35:49,970 INFO L226 Difference]: Without dead ends: 959 [2022-04-06 13:35:49,971 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-04-06 13:35:49,973 INFO L913 BasicCegarLoop]: 710 mSDtfsCounter, 407 mSDsluCounter, 265 mSDsCounter, 0 mSdLazyCounter, 1876 mSolverCounterSat, 141 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 408 SdHoareTripleChecker+Valid, 975 SdHoareTripleChecker+Invalid, 2017 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 141 IncrementalHoareTripleChecker+Valid, 1876 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-04-06 13:35:49,974 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [408 Valid, 975 Invalid, 2017 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [141 Valid, 1876 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-04-06 13:35:49,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 959 states. [2022-04-06 13:35:50,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 959 to 832. [2022-04-06 13:35:50,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 832 states, 648 states have (on average 1.3950617283950617) internal successors, (904), 650 states have internal predecessors, (904), 116 states have call successors, (116), 50 states have call predecessors, (116), 67 states have return successors, (177), 134 states have call predecessors, (177), 108 states have call successors, (177) [2022-04-06 13:35:50,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 832 states to 832 states and 1197 transitions. [2022-04-06 13:35:50,023 INFO L78 Accepts]: Start accepts. Automaton has 832 states and 1197 transitions. Word has length 36 [2022-04-06 13:35:50,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:35:50,024 INFO L478 AbstractCegarLoop]: Abstraction has 832 states and 1197 transitions. [2022-04-06 13:35:50,024 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 3 states have internal predecessors, (25), 3 states have call successors, (8), 6 states have call predecessors, (8), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-04-06 13:35:50,024 INFO L276 IsEmpty]: Start isEmpty. Operand 832 states and 1197 transitions. [2022-04-06 13:35:50,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-04-06 13:35:50,028 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:35:50,028 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 13:35:50,029 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-04-06 13:35:50,029 INFO L403 AbstractCegarLoop]: === Iteration 7 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:35:50,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:35:50,029 INFO L85 PathProgramCache]: Analyzing trace with hash 1794233418, now seen corresponding path program 1 times [2022-04-06 13:35:50,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:35:50,029 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729850214] [2022-04-06 13:35:50,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:35:50,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:35:50,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:35:50,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:35:50,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:35:50,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:35:50,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:35:50,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 13:35:50,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:35:50,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 13:35:50,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:35:50,149 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [729850214] [2022-04-06 13:35:50,149 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [729850214] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:35:50,149 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 13:35:50,149 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-04-06 13:35:50,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679970868] [2022-04-06 13:35:50,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:35:50,149 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-04-06 13:35:50,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:35:50,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-04-06 13:35:50,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-04-06 13:35:50,150 INFO L87 Difference]: Start difference. First operand 832 states and 1197 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) [2022-04-06 13:35:52,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:35:52,199 INFO L93 Difference]: Finished difference Result 1409 states and 2012 transitions. [2022-04-06 13:35:52,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-04-06 13:35:52,200 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 [2022-04-06 13:35:52,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:35:52,203 INFO L225 Difference]: With dead ends: 1409 [2022-04-06 13:35:52,203 INFO L226 Difference]: Without dead ends: 993 [2022-04-06 13:35:52,204 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-04-06 13:35:52,205 INFO L913 BasicCegarLoop]: 812 mSDtfsCounter, 744 mSDsluCounter, 454 mSDsCounter, 0 mSdLazyCounter, 2621 mSolverCounterSat, 235 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 746 SdHoareTripleChecker+Valid, 1266 SdHoareTripleChecker+Invalid, 2856 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 235 IncrementalHoareTripleChecker+Valid, 2621 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-04-06 13:35:52,205 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [746 Valid, 1266 Invalid, 2856 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [235 Valid, 2621 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-04-06 13:35:52,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 993 states. [2022-04-06 13:35:52,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 993 to 734. [2022-04-06 13:35:52,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 734 states, 570 states have (on average 1.3859649122807018) internal successors, (790), 573 states have internal predecessors, (790), 105 states have call successors, (105), 45 states have call predecessors, (105), 58 states have return successors, (131), 118 states have call predecessors, (131), 97 states have call successors, (131) [2022-04-06 13:35:52,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 734 states to 734 states and 1026 transitions. [2022-04-06 13:35:52,244 INFO L78 Accepts]: Start accepts. Automaton has 734 states and 1026 transitions. Word has length 39 [2022-04-06 13:35:52,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:35:52,244 INFO L478 AbstractCegarLoop]: Abstraction has 734 states and 1026 transitions. [2022-04-06 13:35:52,244 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 4 states have internal predecessors, (26), 3 states have call successors, (10), 6 states have call predecessors, (10), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-04-06 13:35:52,244 INFO L276 IsEmpty]: Start isEmpty. Operand 734 states and 1026 transitions. [2022-04-06 13:35:52,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-04-06 13:35:52,245 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:35:52,245 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 13:35:52,246 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-04-06 13:35:52,246 INFO L403 AbstractCegarLoop]: === Iteration 8 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:35:52,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:35:52,246 INFO L85 PathProgramCache]: Analyzing trace with hash -1491782484, now seen corresponding path program 1 times [2022-04-06 13:35:52,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:35:52,246 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481602461] [2022-04-06 13:35:52,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:35:52,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:35:52,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:35:52,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:35:52,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:35:52,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:35:52,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:35:52,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 13:35:52,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:35:52,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 13:35:52,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:35:52,370 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481602461] [2022-04-06 13:35:52,370 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1481602461] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:35:52,370 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 13:35:52,370 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-04-06 13:35:52,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963904017] [2022-04-06 13:35:52,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:35:52,370 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-06 13:35:52,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:35:52,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-06 13:35:52,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-04-06 13:35:52,371 INFO L87 Difference]: Start difference. First operand 734 states and 1026 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) [2022-04-06 13:35:53,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:35:53,593 INFO L93 Difference]: Finished difference Result 975 states and 1402 transitions. [2022-04-06 13:35:53,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-06 13:35:53,594 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 [2022-04-06 13:35:53,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:35:53,597 INFO L225 Difference]: With dead ends: 975 [2022-04-06 13:35:53,597 INFO L226 Difference]: Without dead ends: 957 [2022-04-06 13:35:53,598 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-04-06 13:35:53,598 INFO L913 BasicCegarLoop]: 669 mSDtfsCounter, 1139 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 999 mSolverCounterSat, 248 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1147 SdHoareTripleChecker+Valid, 749 SdHoareTripleChecker+Invalid, 1247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 248 IncrementalHoareTripleChecker+Valid, 999 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-04-06 13:35:53,598 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1147 Valid, 749 Invalid, 1247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [248 Valid, 999 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-04-06 13:35:53,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 957 states. [2022-04-06 13:35:53,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 957 to 754. [2022-04-06 13:35:53,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 754 states, 588 states have (on average 1.3962585034013606) internal successors, (821), 600 states have internal predecessors, (821), 107 states have call successors, (107), 48 states have call predecessors, (107), 58 states have return successors, (124), 110 states have call predecessors, (124), 100 states have call successors, (124) [2022-04-06 13:35:53,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 754 states to 754 states and 1052 transitions. [2022-04-06 13:35:53,639 INFO L78 Accepts]: Start accepts. Automaton has 754 states and 1052 transitions. Word has length 40 [2022-04-06 13:35:53,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:35:53,641 INFO L478 AbstractCegarLoop]: Abstraction has 754 states and 1052 transitions. [2022-04-06 13:35:53,641 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 3 states have internal predecessors, (28), 3 states have call successors, (9), 6 states have call predecessors, (9), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-04-06 13:35:53,641 INFO L276 IsEmpty]: Start isEmpty. Operand 754 states and 1052 transitions. [2022-04-06 13:35:53,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-04-06 13:35:53,643 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:35:53,643 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 13:35:53,643 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-04-06 13:35:53,643 INFO L403 AbstractCegarLoop]: === Iteration 9 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:35:53,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:35:53,644 INFO L85 PathProgramCache]: Analyzing trace with hash 938541339, now seen corresponding path program 1 times [2022-04-06 13:35:53,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:35:53,644 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634937716] [2022-04-06 13:35:53,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:35:53,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:35:53,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:35:53,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:35:53,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:35:53,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:35:53,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:35:53,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 13:35:53,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:35:53,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-04-06 13:35:53,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:35:53,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 13:35:53,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:35:53,758 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634937716] [2022-04-06 13:35:53,758 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [634937716] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:35:53,759 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 13:35:53,759 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-04-06 13:35:53,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331549776] [2022-04-06 13:35:53,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:35:53,760 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-04-06 13:35:53,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:35:53,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-04-06 13:35:53,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-04-06 13:35:53,760 INFO L87 Difference]: Start difference. First operand 754 states and 1052 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) [2022-04-06 13:35:55,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:35:55,206 INFO L93 Difference]: Finished difference Result 1159 states and 1659 transitions. [2022-04-06 13:35:55,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-04-06 13:35:55,207 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 [2022-04-06 13:35:55,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:35:55,228 INFO L225 Difference]: With dead ends: 1159 [2022-04-06 13:35:55,228 INFO L226 Difference]: Without dead ends: 934 [2022-04-06 13:35:55,230 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2022-04-06 13:35:55,231 INFO L913 BasicCegarLoop]: 788 mSDtfsCounter, 580 mSDsluCounter, 524 mSDsCounter, 0 mSdLazyCounter, 1334 mSolverCounterSat, 158 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 586 SdHoareTripleChecker+Valid, 1312 SdHoareTripleChecker+Invalid, 1492 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 158 IncrementalHoareTripleChecker+Valid, 1334 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-04-06 13:35:55,232 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [586 Valid, 1312 Invalid, 1492 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [158 Valid, 1334 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-04-06 13:35:55,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 934 states. [2022-04-06 13:35:55,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 934 to 754. [2022-04-06 13:35:55,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 754 states, 588 states have (on average 1.3945578231292517) internal successors, (820), 600 states have internal predecessors, (820), 107 states have call successors, (107), 48 states have call predecessors, (107), 58 states have return successors, (124), 110 states have call predecessors, (124), 100 states have call successors, (124) [2022-04-06 13:35:55,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 754 states to 754 states and 1051 transitions. [2022-04-06 13:35:55,282 INFO L78 Accepts]: Start accepts. Automaton has 754 states and 1051 transitions. Word has length 46 [2022-04-06 13:35:55,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:35:55,283 INFO L478 AbstractCegarLoop]: Abstraction has 754 states and 1051 transitions. [2022-04-06 13:35:55,283 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 3 states have internal predecessors, (32), 3 states have call successors, (10), 7 states have call predecessors, (10), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-04-06 13:35:55,283 INFO L276 IsEmpty]: Start isEmpty. Operand 754 states and 1051 transitions. [2022-04-06 13:35:55,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-04-06 13:35:55,285 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:35:55,285 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 13:35:55,285 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-04-06 13:35:55,286 INFO L403 AbstractCegarLoop]: === Iteration 10 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:35:55,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:35:55,286 INFO L85 PathProgramCache]: Analyzing trace with hash -747319687, now seen corresponding path program 1 times [2022-04-06 13:35:55,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:35:55,286 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115355865] [2022-04-06 13:35:55,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:35:55,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:35:55,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:35:55,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:35:55,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:35:55,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:35:55,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:35:55,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 13:35:55,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:35:55,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-04-06 13:35:55,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:35:55,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 13:35:55,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:35:55,406 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115355865] [2022-04-06 13:35:55,406 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [115355865] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:35:55,406 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 13:35:55,406 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-04-06 13:35:55,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840703764] [2022-04-06 13:35:55,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:35:55,407 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-04-06 13:35:55,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:35:55,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-04-06 13:35:55,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-04-06 13:35:55,407 INFO L87 Difference]: Start difference. First operand 754 states and 1051 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) [2022-04-06 13:35:56,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:35:56,509 INFO L93 Difference]: Finished difference Result 956 states and 1371 transitions. [2022-04-06 13:35:56,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-04-06 13:35:56,509 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 [2022-04-06 13:35:56,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:35:56,516 INFO L225 Difference]: With dead ends: 956 [2022-04-06 13:35:56,517 INFO L226 Difference]: Without dead ends: 889 [2022-04-06 13:35:56,517 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=53, Unknown=0, NotChecked=0, Total=90 [2022-04-06 13:35:56,518 INFO L913 BasicCegarLoop]: 664 mSDtfsCounter, 1894 mSDsluCounter, 446 mSDsCounter, 0 mSdLazyCounter, 732 mSolverCounterSat, 543 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1900 SdHoareTripleChecker+Valid, 1110 SdHoareTripleChecker+Invalid, 1275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 543 IncrementalHoareTripleChecker+Valid, 732 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-04-06 13:35:56,519 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1900 Valid, 1110 Invalid, 1275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [543 Valid, 732 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-04-06 13:35:56,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 889 states. [2022-04-06 13:35:56,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 889 to 743. [2022-04-06 13:35:56,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 743 states, 581 states have (on average 1.395869191049914) internal successors, (811), 593 states have internal predecessors, (811), 105 states have call successors, (105), 46 states have call predecessors, (105), 56 states have return successors, (122), 108 states have call predecessors, (122), 98 states have call successors, (122) [2022-04-06 13:35:56,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 743 states to 743 states and 1038 transitions. [2022-04-06 13:35:56,573 INFO L78 Accepts]: Start accepts. Automaton has 743 states and 1038 transitions. Word has length 47 [2022-04-06 13:35:56,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:35:56,573 INFO L478 AbstractCegarLoop]: Abstraction has 743 states and 1038 transitions. [2022-04-06 13:35:56,573 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 3 states have internal predecessors, (34), 3 states have call successors, (9), 7 states have call predecessors, (9), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-04-06 13:35:56,574 INFO L276 IsEmpty]: Start isEmpty. Operand 743 states and 1038 transitions. [2022-04-06 13:35:56,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-04-06 13:35:56,575 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:35:56,575 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 13:35:56,575 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-04-06 13:35:56,575 INFO L403 AbstractCegarLoop]: === Iteration 11 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:35:56,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:35:56,576 INFO L85 PathProgramCache]: Analyzing trace with hash -1537806195, now seen corresponding path program 1 times [2022-04-06 13:35:56,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:35:56,576 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723360290] [2022-04-06 13:35:56,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:35:56,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:35:56,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:35:56,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:35:56,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:35:56,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:35:56,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:35:56,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 13:35:56,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:35:56,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-04-06 13:35:56,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:35:56,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-06 13:35:56,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:35:56,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 13:35:56,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:35:56,699 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723360290] [2022-04-06 13:35:56,699 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [723360290] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:35:56,699 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 13:35:56,699 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-04-06 13:35:56,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107325932] [2022-04-06 13:35:56,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:35:56,700 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-04-06 13:35:56,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:35:56,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-04-06 13:35:56,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2022-04-06 13:35:56,700 INFO L87 Difference]: Start difference. First operand 743 states and 1038 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) [2022-04-06 13:35:58,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:35:58,133 INFO L93 Difference]: Finished difference Result 1059 states and 1503 transitions. [2022-04-06 13:35:58,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-04-06 13:35:58,133 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 [2022-04-06 13:35:58,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:35:58,139 INFO L225 Difference]: With dead ends: 1059 [2022-04-06 13:35:58,139 INFO L226 Difference]: Without dead ends: 998 [2022-04-06 13:35:58,140 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=119, Invalid=343, Unknown=0, NotChecked=0, Total=462 [2022-04-06 13:35:58,145 INFO L913 BasicCegarLoop]: 751 mSDtfsCounter, 2185 mSDsluCounter, 950 mSDsCounter, 0 mSdLazyCounter, 2265 mSolverCounterSat, 721 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2214 SdHoareTripleChecker+Valid, 1701 SdHoareTripleChecker+Invalid, 2986 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 721 IncrementalHoareTripleChecker+Valid, 2265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-04-06 13:35:58,147 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [2214 Valid, 1701 Invalid, 2986 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [721 Valid, 2265 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-04-06 13:35:58,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 998 states. [2022-04-06 13:35:58,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 998 to 786. [2022-04-06 13:35:58,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 786 states, 616 states have (on average 1.3944805194805194) internal successors, (859), 627 states have internal predecessors, (859), 109 states have call successors, (109), 49 states have call predecessors, (109), 60 states have return successors, (131), 114 states have call predecessors, (131), 102 states have call successors, (131) [2022-04-06 13:35:58,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 786 states to 786 states and 1099 transitions. [2022-04-06 13:35:58,196 INFO L78 Accepts]: Start accepts. Automaton has 786 states and 1099 transitions. Word has length 48 [2022-04-06 13:35:58,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:35:58,197 INFO L478 AbstractCegarLoop]: Abstraction has 786 states and 1099 transitions. [2022-04-06 13:35:58,197 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 7 states have internal predecessors, (36), 4 states have call successors, (7), 6 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2022-04-06 13:35:58,197 INFO L276 IsEmpty]: Start isEmpty. Operand 786 states and 1099 transitions. [2022-04-06 13:35:58,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-04-06 13:35:58,198 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:35:58,198 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 13:35:58,198 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-04-06 13:35:58,198 INFO L403 AbstractCegarLoop]: === Iteration 12 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:35:58,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:35:58,199 INFO L85 PathProgramCache]: Analyzing trace with hash 520235537, now seen corresponding path program 1 times [2022-04-06 13:35:58,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:35:58,199 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384467092] [2022-04-06 13:35:58,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:35:58,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:35:58,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:35:58,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:35:58,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:35:58,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:35:58,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:35:58,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 13:35:58,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:35:58,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-04-06 13:35:58,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:35:58,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-06 13:35:58,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:35:58,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 13:35:58,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:35:58,340 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384467092] [2022-04-06 13:35:58,340 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [384467092] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:35:58,340 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 13:35:58,340 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-04-06 13:35:58,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626001054] [2022-04-06 13:35:58,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:35:58,340 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-04-06 13:35:58,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:35:58,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-04-06 13:35:58,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-04-06 13:35:58,341 INFO L87 Difference]: Start difference. First operand 786 states and 1099 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) [2022-04-06 13:36:00,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:36:00,169 INFO L93 Difference]: Finished difference Result 947 states and 1359 transitions. [2022-04-06 13:36:00,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-04-06 13:36:00,169 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 [2022-04-06 13:36:00,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:36:00,172 INFO L225 Difference]: With dead ends: 947 [2022-04-06 13:36:00,172 INFO L226 Difference]: Without dead ends: 919 [2022-04-06 13:36:00,173 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=95, Invalid=211, Unknown=0, NotChecked=0, Total=306 [2022-04-06 13:36:00,173 INFO L913 BasicCegarLoop]: 649 mSDtfsCounter, 1533 mSDsluCounter, 795 mSDsCounter, 0 mSdLazyCounter, 1776 mSolverCounterSat, 390 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1544 SdHoareTripleChecker+Valid, 1444 SdHoareTripleChecker+Invalid, 2166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 390 IncrementalHoareTripleChecker+Valid, 1776 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-04-06 13:36:00,173 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1544 Valid, 1444 Invalid, 2166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [390 Valid, 1776 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-04-06 13:36:00,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 919 states. [2022-04-06 13:36:00,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 919 to 789. [2022-04-06 13:36:00,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 789 states, 619 states have (on average 1.394184168012924) internal successors, (863), 630 states have internal predecessors, (863), 109 states have call successors, (109), 49 states have call predecessors, (109), 60 states have return successors, (131), 114 states have call predecessors, (131), 102 states have call successors, (131) [2022-04-06 13:36:00,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 789 states to 789 states and 1103 transitions. [2022-04-06 13:36:00,223 INFO L78 Accepts]: Start accepts. Automaton has 789 states and 1103 transitions. Word has length 50 [2022-04-06 13:36:00,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:36:00,223 INFO L478 AbstractCegarLoop]: Abstraction has 789 states and 1103 transitions. [2022-04-06 13:36:00,223 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.8) internal successors, (38), 6 states have internal predecessors, (38), 3 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2022-04-06 13:36:00,223 INFO L276 IsEmpty]: Start isEmpty. Operand 789 states and 1103 transitions. [2022-04-06 13:36:00,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-04-06 13:36:00,225 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:36:00,225 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 13:36:00,225 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-04-06 13:36:00,225 INFO L403 AbstractCegarLoop]: === Iteration 13 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:36:00,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:36:00,225 INFO L85 PathProgramCache]: Analyzing trace with hash -476836816, now seen corresponding path program 1 times [2022-04-06 13:36:00,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:36:00,225 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207279591] [2022-04-06 13:36:00,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:36:00,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:36:00,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:00,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:36:00,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:00,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:36:00,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:00,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 13:36:00,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:00,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-04-06 13:36:00,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:00,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-06 13:36:00,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:00,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 13:36:00,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:36:00,375 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207279591] [2022-04-06 13:36:00,375 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1207279591] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:36:00,376 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 13:36:00,376 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-04-06 13:36:00,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616471200] [2022-04-06 13:36:00,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:36:00,376 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-04-06 13:36:00,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:36:00,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-04-06 13:36:00,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2022-04-06 13:36:00,377 INFO L87 Difference]: Start difference. First operand 789 states and 1103 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) [2022-04-06 13:36:02,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:36:02,623 INFO L93 Difference]: Finished difference Result 970 states and 1390 transitions. [2022-04-06 13:36:02,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-04-06 13:36:02,623 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 [2022-04-06 13:36:02,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:36:02,626 INFO L225 Difference]: With dead ends: 970 [2022-04-06 13:36:02,627 INFO L226 Difference]: Without dead ends: 906 [2022-04-06 13:36:02,627 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2022-04-06 13:36:02,631 INFO L913 BasicCegarLoop]: 649 mSDtfsCounter, 1874 mSDsluCounter, 871 mSDsCounter, 0 mSdLazyCounter, 2855 mSolverCounterSat, 529 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1883 SdHoareTripleChecker+Valid, 1520 SdHoareTripleChecker+Invalid, 3384 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 529 IncrementalHoareTripleChecker+Valid, 2855 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-04-06 13:36:02,632 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1883 Valid, 1520 Invalid, 3384 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [529 Valid, 2855 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-04-06 13:36:02,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 906 states. [2022-04-06 13:36:02,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 906 to 784. [2022-04-06 13:36:02,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 784 states, 614 states have (on average 1.3892508143322475) internal successors, (853), 625 states have internal predecessors, (853), 109 states have call successors, (109), 49 states have call predecessors, (109), 60 states have return successors, (131), 114 states have call predecessors, (131), 102 states have call successors, (131) [2022-04-06 13:36:02,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 784 states to 784 states and 1093 transitions. [2022-04-06 13:36:02,694 INFO L78 Accepts]: Start accepts. Automaton has 784 states and 1093 transitions. Word has length 50 [2022-04-06 13:36:02,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:36:02,694 INFO L478 AbstractCegarLoop]: Abstraction has 784 states and 1093 transitions. [2022-04-06 13:36:02,694 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 8 states have internal predecessors, (38), 4 states have call successors, (7), 6 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2022-04-06 13:36:02,694 INFO L276 IsEmpty]: Start isEmpty. Operand 784 states and 1093 transitions. [2022-04-06 13:36:02,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-04-06 13:36:02,696 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:36:02,696 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 13:36:02,696 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-04-06 13:36:02,696 INFO L403 AbstractCegarLoop]: === Iteration 14 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:36:02,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:36:02,696 INFO L85 PathProgramCache]: Analyzing trace with hash 1976586256, now seen corresponding path program 1 times [2022-04-06 13:36:02,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:36:02,697 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250845983] [2022-04-06 13:36:02,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:36:02,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:36:02,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:02,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:36:02,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:02,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:36:02,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:02,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 13:36:02,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:02,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-04-06 13:36:02,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:02,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-06 13:36:02,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:02,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 13:36:02,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:36:02,880 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250845983] [2022-04-06 13:36:02,880 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [250845983] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:36:02,880 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 13:36:02,880 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-04-06 13:36:02,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801931613] [2022-04-06 13:36:02,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:36:02,881 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-04-06 13:36:02,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:36:02,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-04-06 13:36:02,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-04-06 13:36:02,882 INFO L87 Difference]: Start difference. First operand 784 states and 1093 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) [2022-04-06 13:36:04,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:36:04,620 INFO L93 Difference]: Finished difference Result 1071 states and 1527 transitions. [2022-04-06 13:36:04,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-04-06 13:36:04,620 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 [2022-04-06 13:36:04,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:36:04,623 INFO L225 Difference]: With dead ends: 1071 [2022-04-06 13:36:04,624 INFO L226 Difference]: Without dead ends: 1060 [2022-04-06 13:36:04,624 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-04-06 13:36:04,624 INFO L913 BasicCegarLoop]: 796 mSDtfsCounter, 520 mSDsluCounter, 557 mSDsCounter, 0 mSdLazyCounter, 1832 mSolverCounterSat, 153 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 523 SdHoareTripleChecker+Valid, 1353 SdHoareTripleChecker+Invalid, 1985 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 153 IncrementalHoareTripleChecker+Valid, 1832 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-04-06 13:36:04,625 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [523 Valid, 1353 Invalid, 1985 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [153 Valid, 1832 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-04-06 13:36:04,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1060 states. [2022-04-06 13:36:04,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1060 to 837. [2022-04-06 13:36:04,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 837 states, 653 states have (on average 1.3721286370597243) internal successors, (896), 666 states have internal predecessors, (896), 111 states have call successors, (111), 51 states have call predecessors, (111), 72 states have return successors, (143), 126 states have call predecessors, (143), 104 states have call successors, (143) [2022-04-06 13:36:04,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 837 states to 837 states and 1150 transitions. [2022-04-06 13:36:04,693 INFO L78 Accepts]: Start accepts. Automaton has 837 states and 1150 transitions. Word has length 50 [2022-04-06 13:36:04,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:36:04,693 INFO L478 AbstractCegarLoop]: Abstraction has 837 states and 1150 transitions. [2022-04-06 13:36:04,693 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (7), 6 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2022-04-06 13:36:04,693 INFO L276 IsEmpty]: Start isEmpty. Operand 837 states and 1150 transitions. [2022-04-06 13:36:04,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-04-06 13:36:04,694 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:36:04,694 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 13:36:04,695 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-04-06 13:36:04,695 INFO L403 AbstractCegarLoop]: === Iteration 15 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:36:04,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:36:04,695 INFO L85 PathProgramCache]: Analyzing trace with hash 2001757018, now seen corresponding path program 1 times [2022-04-06 13:36:04,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:36:04,695 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995545130] [2022-04-06 13:36:04,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:36:04,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:36:04,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:04,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:36:04,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:04,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:36:04,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:04,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 13:36:04,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:04,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-06 13:36:04,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:04,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-06 13:36:04,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:04,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:36:04,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:04,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 13:36:04,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:36:04,856 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995545130] [2022-04-06 13:36:04,856 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1995545130] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:36:04,856 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 13:36:04,856 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-04-06 13:36:04,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032366312] [2022-04-06 13:36:04,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:36:04,857 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-04-06 13:36:04,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:36:04,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-04-06 13:36:04,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2022-04-06 13:36:04,857 INFO L87 Difference]: Start difference. First operand 837 states and 1150 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) [2022-04-06 13:36:06,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:36:06,085 INFO L93 Difference]: Finished difference Result 982 states and 1391 transitions. [2022-04-06 13:36:06,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-04-06 13:36:06,086 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 [2022-04-06 13:36:06,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:36:06,089 INFO L225 Difference]: With dead ends: 982 [2022-04-06 13:36:06,089 INFO L226 Difference]: Without dead ends: 977 [2022-04-06 13:36:06,089 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2022-04-06 13:36:06,090 INFO L913 BasicCegarLoop]: 690 mSDtfsCounter, 823 mSDsluCounter, 688 mSDsCounter, 0 mSdLazyCounter, 1464 mSolverCounterSat, 284 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 826 SdHoareTripleChecker+Valid, 1378 SdHoareTripleChecker+Invalid, 1748 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 284 IncrementalHoareTripleChecker+Valid, 1464 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-04-06 13:36:06,090 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [826 Valid, 1378 Invalid, 1748 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [284 Valid, 1464 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-04-06 13:36:06,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 977 states. [2022-04-06 13:36:06,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 977 to 855. [2022-04-06 13:36:06,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 855 states, 668 states have (on average 1.3682634730538923) internal successors, (914), 682 states have internal predecessors, (914), 112 states have call successors, (112), 52 states have call predecessors, (112), 74 states have return successors, (145), 128 states have call predecessors, (145), 105 states have call successors, (145) [2022-04-06 13:36:06,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 855 states to 855 states and 1171 transitions. [2022-04-06 13:36:06,156 INFO L78 Accepts]: Start accepts. Automaton has 855 states and 1171 transitions. Word has length 52 [2022-04-06 13:36:06,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:36:06,156 INFO L478 AbstractCegarLoop]: Abstraction has 855 states and 1171 transitions. [2022-04-06 13:36:06,156 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (8), 8 states have call predecessors, (8), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2022-04-06 13:36:06,157 INFO L276 IsEmpty]: Start isEmpty. Operand 855 states and 1171 transitions. [2022-04-06 13:36:06,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-04-06 13:36:06,158 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:36:06,158 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 13:36:06,158 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-04-06 13:36:06,158 INFO L403 AbstractCegarLoop]: === Iteration 16 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:36:06,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:36:06,158 INFO L85 PathProgramCache]: Analyzing trace with hash 2085636174, now seen corresponding path program 1 times [2022-04-06 13:36:06,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:36:06,159 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631209106] [2022-04-06 13:36:06,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:36:06,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:36:06,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:06,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:36:06,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:06,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:36:06,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:06,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 13:36:06,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:06,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-04-06 13:36:06,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:06,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-04-06 13:36:06,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:06,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 13:36:06,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:36:06,251 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631209106] [2022-04-06 13:36:06,251 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [631209106] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:36:06,251 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 13:36:06,251 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-04-06 13:36:06,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111981477] [2022-04-06 13:36:06,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:36:06,252 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-04-06 13:36:06,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:36:06,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-04-06 13:36:06,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-04-06 13:36:06,252 INFO L87 Difference]: Start difference. First operand 855 states and 1171 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) [2022-04-06 13:36:07,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:36:07,703 INFO L93 Difference]: Finished difference Result 1188 states and 1671 transitions. [2022-04-06 13:36:07,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-04-06 13:36:07,703 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 [2022-04-06 13:36:07,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:36:07,707 INFO L225 Difference]: With dead ends: 1188 [2022-04-06 13:36:07,707 INFO L226 Difference]: Without dead ends: 947 [2022-04-06 13:36:07,707 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=67, Unknown=0, NotChecked=0, Total=110 [2022-04-06 13:36:07,731 INFO L913 BasicCegarLoop]: 638 mSDtfsCounter, 1398 mSDsluCounter, 526 mSDsCounter, 0 mSdLazyCounter, 1350 mSolverCounterSat, 497 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1431 SdHoareTripleChecker+Valid, 1164 SdHoareTripleChecker+Invalid, 1847 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 497 IncrementalHoareTripleChecker+Valid, 1350 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-04-06 13:36:07,732 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1431 Valid, 1164 Invalid, 1847 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [497 Valid, 1350 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-04-06 13:36:07,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 947 states. [2022-04-06 13:36:07,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 947 to 827. [2022-04-06 13:36:07,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 827 states, 647 states have (on average 1.3663060278207109) internal successors, (884), 659 states have internal predecessors, (884), 110 states have call successors, (110), 51 states have call predecessors, (110), 69 states have return successors, (140), 123 states have call predecessors, (140), 104 states have call successors, (140) [2022-04-06 13:36:07,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 827 states to 827 states and 1134 transitions. [2022-04-06 13:36:07,808 INFO L78 Accepts]: Start accepts. Automaton has 827 states and 1134 transitions. Word has length 54 [2022-04-06 13:36:07,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:36:07,808 INFO L478 AbstractCegarLoop]: Abstraction has 827 states and 1134 transitions. [2022-04-06 13:36:07,808 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (10), 7 states have call predecessors, (10), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2022-04-06 13:36:07,808 INFO L276 IsEmpty]: Start isEmpty. Operand 827 states and 1134 transitions. [2022-04-06 13:36:07,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-04-06 13:36:07,815 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:36:07,815 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 13:36:07,815 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-04-06 13:36:07,815 INFO L403 AbstractCegarLoop]: === Iteration 17 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:36:07,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:36:07,815 INFO L85 PathProgramCache]: Analyzing trace with hash 1175170233, now seen corresponding path program 1 times [2022-04-06 13:36:07,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:36:07,816 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969826331] [2022-04-06 13:36:07,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:36:07,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:36:07,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:07,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:36:07,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:07,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:36:07,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:07,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 13:36:07,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:07,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-04-06 13:36:07,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:07,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-06 13:36:07,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:07,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 13:36:07,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:36:07,977 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969826331] [2022-04-06 13:36:07,977 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1969826331] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:36:07,977 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 13:36:07,978 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-04-06 13:36:07,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797032187] [2022-04-06 13:36:07,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:36:07,978 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-04-06 13:36:07,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:36:07,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-04-06 13:36:07,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2022-04-06 13:36:07,979 INFO L87 Difference]: Start difference. First operand 827 states and 1134 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) [2022-04-06 13:36:09,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:36:09,748 INFO L93 Difference]: Finished difference Result 972 states and 1374 transitions. [2022-04-06 13:36:09,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-04-06 13:36:09,748 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 [2022-04-06 13:36:09,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:36:09,757 INFO L225 Difference]: With dead ends: 972 [2022-04-06 13:36:09,757 INFO L226 Difference]: Without dead ends: 968 [2022-04-06 13:36:09,757 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2022-04-06 13:36:09,757 INFO L913 BasicCegarLoop]: 704 mSDtfsCounter, 739 mSDsluCounter, 1724 mSDsCounter, 0 mSdLazyCounter, 3847 mSolverCounterSat, 276 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 741 SdHoareTripleChecker+Valid, 2428 SdHoareTripleChecker+Invalid, 4123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 276 IncrementalHoareTripleChecker+Valid, 3847 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-04-06 13:36:09,758 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [741 Valid, 2428 Invalid, 4123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [276 Valid, 3847 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-04-06 13:36:09,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 968 states. [2022-04-06 13:36:09,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 968 to 846. [2022-04-06 13:36:09,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 846 states, 663 states have (on average 1.358974358974359) internal successors, (901), 676 states have internal predecessors, (901), 111 states have call successors, (111), 51 states have call predecessors, (111), 71 states have return successors, (143), 126 states have call predecessors, (143), 105 states have call successors, (143) [2022-04-06 13:36:09,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 846 states to 846 states and 1155 transitions. [2022-04-06 13:36:09,832 INFO L78 Accepts]: Start accepts. Automaton has 846 states and 1155 transitions. Word has length 51 [2022-04-06 13:36:09,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:36:09,832 INFO L478 AbstractCegarLoop]: Abstraction has 846 states and 1155 transitions. [2022-04-06 13:36:09,832 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.25) internal successors, (39), 6 states have internal predecessors, (39), 2 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2022-04-06 13:36:09,832 INFO L276 IsEmpty]: Start isEmpty. Operand 846 states and 1155 transitions. [2022-04-06 13:36:09,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-04-06 13:36:09,834 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:36:09,834 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 13:36:09,834 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-04-06 13:36:09,834 INFO L403 AbstractCegarLoop]: === Iteration 18 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:36:09,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:36:09,834 INFO L85 PathProgramCache]: Analyzing trace with hash 1175201977, now seen corresponding path program 1 times [2022-04-06 13:36:09,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:36:09,834 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062356659] [2022-04-06 13:36:09,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:36:09,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:36:09,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:09,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:36:09,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:09,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:36:09,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:09,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 13:36:09,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:09,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-04-06 13:36:09,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:09,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-06 13:36:09,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:09,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 13:36:09,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:36:09,955 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062356659] [2022-04-06 13:36:09,955 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2062356659] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:36:09,955 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 13:36:09,955 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-04-06 13:36:09,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954218265] [2022-04-06 13:36:09,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:36:09,956 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-04-06 13:36:09,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:36:09,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-04-06 13:36:09,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2022-04-06 13:36:09,956 INFO L87 Difference]: Start difference. First operand 846 states and 1155 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) [2022-04-06 13:36:11,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:36:11,665 INFO L93 Difference]: Finished difference Result 981 states and 1385 transitions. [2022-04-06 13:36:11,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-04-06 13:36:11,665 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 [2022-04-06 13:36:11,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:36:11,669 INFO L225 Difference]: With dead ends: 981 [2022-04-06 13:36:11,670 INFO L226 Difference]: Without dead ends: 957 [2022-04-06 13:36:11,670 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2022-04-06 13:36:11,671 INFO L913 BasicCegarLoop]: 703 mSDtfsCounter, 1084 mSDsluCounter, 1634 mSDsCounter, 0 mSdLazyCounter, 3506 mSolverCounterSat, 411 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1086 SdHoareTripleChecker+Valid, 2337 SdHoareTripleChecker+Invalid, 3917 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 411 IncrementalHoareTripleChecker+Valid, 3506 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-04-06 13:36:11,671 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1086 Valid, 2337 Invalid, 3917 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [411 Valid, 3506 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-04-06 13:36:11,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 957 states. [2022-04-06 13:36:11,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 957 to 833. [2022-04-06 13:36:11,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 833 states, 652 states have (on average 1.3634969325153374) internal successors, (889), 665 states have internal predecessors, (889), 111 states have call successors, (111), 51 states have call predecessors, (111), 69 states have return successors, (141), 124 states have call predecessors, (141), 105 states have call successors, (141) [2022-04-06 13:36:11,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 833 states to 833 states and 1141 transitions. [2022-04-06 13:36:11,728 INFO L78 Accepts]: Start accepts. Automaton has 833 states and 1141 transitions. Word has length 51 [2022-04-06 13:36:11,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:36:11,728 INFO L478 AbstractCegarLoop]: Abstraction has 833 states and 1141 transitions. [2022-04-06 13:36:11,728 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.25) internal successors, (39), 6 states have internal predecessors, (39), 2 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2022-04-06 13:36:11,728 INFO L276 IsEmpty]: Start isEmpty. Operand 833 states and 1141 transitions. [2022-04-06 13:36:11,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-04-06 13:36:11,730 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:36:11,730 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 13:36:11,730 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-04-06 13:36:11,730 INFO L403 AbstractCegarLoop]: === Iteration 19 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:36:11,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:36:11,730 INFO L85 PathProgramCache]: Analyzing trace with hash 1955463855, now seen corresponding path program 1 times [2022-04-06 13:36:11,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:36:11,730 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414365108] [2022-04-06 13:36:11,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:36:11,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:36:11,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:11,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:36:11,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:11,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:36:11,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:11,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 13:36:11,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:11,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-06 13:36:11,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:11,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-06 13:36:11,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:11,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:36:11,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:11,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 13:36:11,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:36:11,904 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414365108] [2022-04-06 13:36:11,904 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [414365108] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:36:11,904 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 13:36:11,904 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-04-06 13:36:11,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628868363] [2022-04-06 13:36:11,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:36:11,905 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-04-06 13:36:11,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:36:11,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-04-06 13:36:11,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2022-04-06 13:36:11,905 INFO L87 Difference]: Start difference. First operand 833 states and 1141 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) [2022-04-06 13:36:13,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:36:13,517 INFO L93 Difference]: Finished difference Result 963 states and 1362 transitions. [2022-04-06 13:36:13,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-04-06 13:36:13,517 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 [2022-04-06 13:36:13,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:36:13,533 INFO L225 Difference]: With dead ends: 963 [2022-04-06 13:36:13,533 INFO L226 Difference]: Without dead ends: 957 [2022-04-06 13:36:13,534 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=106, Invalid=274, Unknown=0, NotChecked=0, Total=380 [2022-04-06 13:36:13,539 INFO L913 BasicCegarLoop]: 653 mSDtfsCounter, 1943 mSDsluCounter, 941 mSDsCounter, 0 mSdLazyCounter, 2618 mSolverCounterSat, 647 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1969 SdHoareTripleChecker+Valid, 1594 SdHoareTripleChecker+Invalid, 3265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 647 IncrementalHoareTripleChecker+Valid, 2618 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-04-06 13:36:13,539 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1969 Valid, 1594 Invalid, 3265 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [647 Valid, 2618 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-04-06 13:36:13,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 957 states. [2022-04-06 13:36:13,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 957 to 833. [2022-04-06 13:36:13,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 833 states, 652 states have (on average 1.361963190184049) internal successors, (888), 665 states have internal predecessors, (888), 111 states have call successors, (111), 51 states have call predecessors, (111), 69 states have return successors, (141), 124 states have call predecessors, (141), 105 states have call successors, (141) [2022-04-06 13:36:13,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 833 states to 833 states and 1140 transitions. [2022-04-06 13:36:13,612 INFO L78 Accepts]: Start accepts. Automaton has 833 states and 1140 transitions. Word has length 53 [2022-04-06 13:36:13,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:36:13,612 INFO L478 AbstractCegarLoop]: Abstraction has 833 states and 1140 transitions. [2022-04-06 13:36:13,612 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 7 states have internal predecessors, (39), 3 states have call successors, (8), 8 states have call predecessors, (8), 4 states have return successors, (6), 5 states have call predecessors, (6), 2 states have call successors, (6) [2022-04-06 13:36:13,612 INFO L276 IsEmpty]: Start isEmpty. Operand 833 states and 1140 transitions. [2022-04-06 13:36:13,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-04-06 13:36:13,623 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:36:13,623 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 13:36:13,623 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-04-06 13:36:13,624 INFO L403 AbstractCegarLoop]: === Iteration 20 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:36:13,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:36:13,624 INFO L85 PathProgramCache]: Analyzing trace with hash -1151246814, now seen corresponding path program 1 times [2022-04-06 13:36:13,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:36:13,624 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476869139] [2022-04-06 13:36:13,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:36:13,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:36:13,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:13,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:36:13,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:13,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:36:13,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:13,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 13:36:13,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:13,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-04-06 13:36:13,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:13,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-06 13:36:13,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:13,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 13:36:13,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:36:13,769 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476869139] [2022-04-06 13:36:13,770 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [476869139] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:36:13,770 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 13:36:13,770 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-04-06 13:36:13,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505983687] [2022-04-06 13:36:13,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:36:13,771 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-04-06 13:36:13,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:36:13,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-04-06 13:36:13,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-04-06 13:36:13,771 INFO L87 Difference]: Start difference. First operand 833 states and 1140 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) [2022-04-06 13:36:15,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:36:15,200 INFO L93 Difference]: Finished difference Result 967 states and 1365 transitions. [2022-04-06 13:36:15,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-04-06 13:36:15,206 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 [2022-04-06 13:36:15,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:36:15,209 INFO L225 Difference]: With dead ends: 967 [2022-04-06 13:36:15,210 INFO L226 Difference]: Without dead ends: 931 [2022-04-06 13:36:15,210 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=86, Invalid=186, Unknown=0, NotChecked=0, Total=272 [2022-04-06 13:36:15,210 INFO L913 BasicCegarLoop]: 656 mSDtfsCounter, 1920 mSDsluCounter, 601 mSDsCounter, 0 mSdLazyCounter, 1466 mSolverCounterSat, 583 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1935 SdHoareTripleChecker+Valid, 1257 SdHoareTripleChecker+Invalid, 2049 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 583 IncrementalHoareTripleChecker+Valid, 1466 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-04-06 13:36:15,211 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1935 Valid, 1257 Invalid, 2049 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [583 Valid, 1466 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-04-06 13:36:15,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 931 states. [2022-04-06 13:36:15,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 931 to 805. [2022-04-06 13:36:15,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 805 states, 629 states have (on average 1.370429252782194) internal successors, (862), 641 states have internal predecessors, (862), 108 states have call successors, (108), 49 states have call predecessors, (108), 67 states have return successors, (138), 121 states have call predecessors, (138), 102 states have call successors, (138) [2022-04-06 13:36:15,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 805 states to 805 states and 1108 transitions. [2022-04-06 13:36:15,272 INFO L78 Accepts]: Start accepts. Automaton has 805 states and 1108 transitions. Word has length 52 [2022-04-06 13:36:15,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:36:15,272 INFO L478 AbstractCegarLoop]: Abstraction has 805 states and 1108 transitions. [2022-04-06 13:36:15,272 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 5 states have internal predecessors, (40), 3 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2022-04-06 13:36:15,272 INFO L276 IsEmpty]: Start isEmpty. Operand 805 states and 1108 transitions. [2022-04-06 13:36:15,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-04-06 13:36:15,274 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:36:15,274 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 13:36:15,274 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-04-06 13:36:15,274 INFO L403 AbstractCegarLoop]: === Iteration 21 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:36:15,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:36:15,274 INFO L85 PathProgramCache]: Analyzing trace with hash -437720056, now seen corresponding path program 1 times [2022-04-06 13:36:15,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:36:15,274 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013338230] [2022-04-06 13:36:15,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:36:15,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:36:15,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:15,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:36:15,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:15,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:36:15,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:15,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 13:36:15,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:15,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-06 13:36:15,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:15,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-06 13:36:15,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:15,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:36:15,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:15,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 13:36:15,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:36:15,477 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013338230] [2022-04-06 13:36:15,477 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2013338230] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:36:15,478 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 13:36:15,478 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-04-06 13:36:15,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692731111] [2022-04-06 13:36:15,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:36:15,478 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-04-06 13:36:15,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:36:15,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-04-06 13:36:15,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2022-04-06 13:36:15,488 INFO L87 Difference]: Start difference. First operand 805 states and 1108 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) [2022-04-06 13:36:16,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:36:16,927 INFO L93 Difference]: Finished difference Result 933 states and 1327 transitions. [2022-04-06 13:36:16,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-04-06 13:36:16,928 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 [2022-04-06 13:36:16,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:36:16,931 INFO L225 Difference]: With dead ends: 933 [2022-04-06 13:36:16,931 INFO L226 Difference]: Without dead ends: 927 [2022-04-06 13:36:16,932 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=106, Invalid=274, Unknown=0, NotChecked=0, Total=380 [2022-04-06 13:36:16,932 INFO L913 BasicCegarLoop]: 624 mSDtfsCounter, 2275 mSDsluCounter, 621 mSDsCounter, 0 mSdLazyCounter, 1474 mSolverCounterSat, 828 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2301 SdHoareTripleChecker+Valid, 1245 SdHoareTripleChecker+Invalid, 2302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 828 IncrementalHoareTripleChecker+Valid, 1474 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-04-06 13:36:16,932 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [2301 Valid, 1245 Invalid, 2302 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [828 Valid, 1474 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-04-06 13:36:16,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 927 states. [2022-04-06 13:36:17,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 927 to 805. [2022-04-06 13:36:17,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 805 states, 629 states have (on average 1.368839427662957) internal successors, (861), 641 states have internal predecessors, (861), 108 states have call successors, (108), 49 states have call predecessors, (108), 67 states have return successors, (138), 121 states have call predecessors, (138), 102 states have call successors, (138) [2022-04-06 13:36:17,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 805 states to 805 states and 1107 transitions. [2022-04-06 13:36:17,003 INFO L78 Accepts]: Start accepts. Automaton has 805 states and 1107 transitions. Word has length 54 [2022-04-06 13:36:17,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:36:17,003 INFO L478 AbstractCegarLoop]: Abstraction has 805 states and 1107 transitions. [2022-04-06 13:36:17,003 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 7 states have internal predecessors, (40), 3 states have call successors, (8), 8 states have call predecessors, (8), 4 states have return successors, (6), 5 states have call predecessors, (6), 2 states have call successors, (6) [2022-04-06 13:36:17,003 INFO L276 IsEmpty]: Start isEmpty. Operand 805 states and 1107 transitions. [2022-04-06 13:36:17,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-04-06 13:36:17,005 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:36:17,005 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 13:36:17,005 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-04-06 13:36:17,005 INFO L403 AbstractCegarLoop]: === Iteration 22 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:36:17,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:36:17,005 INFO L85 PathProgramCache]: Analyzing trace with hash -1268427453, now seen corresponding path program 1 times [2022-04-06 13:36:17,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:36:17,005 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423018623] [2022-04-06 13:36:17,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:36:17,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:36:17,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:17,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:36:17,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:17,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:36:17,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:17,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 13:36:17,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:17,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-06 13:36:17,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:17,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-06 13:36:17,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:17,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:36:17,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:17,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 13:36:17,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:36:17,193 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423018623] [2022-04-06 13:36:17,193 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1423018623] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:36:17,193 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 13:36:17,193 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-04-06 13:36:17,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335423997] [2022-04-06 13:36:17,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:36:17,193 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-04-06 13:36:17,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:36:17,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-04-06 13:36:17,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2022-04-06 13:36:17,197 INFO L87 Difference]: Start difference. First operand 805 states and 1107 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) [2022-04-06 13:36:19,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:36:19,002 INFO L93 Difference]: Finished difference Result 956 states and 1356 transitions. [2022-04-06 13:36:19,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-04-06 13:36:19,003 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 [2022-04-06 13:36:19,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:36:19,006 INFO L225 Difference]: With dead ends: 956 [2022-04-06 13:36:19,006 INFO L226 Difference]: Without dead ends: 916 [2022-04-06 13:36:19,006 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=62, Invalid=280, Unknown=0, NotChecked=0, Total=342 [2022-04-06 13:36:19,006 INFO L913 BasicCegarLoop]: 675 mSDtfsCounter, 415 mSDsluCounter, 2009 mSDsCounter, 0 mSdLazyCounter, 4991 mSolverCounterSat, 169 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 418 SdHoareTripleChecker+Valid, 2684 SdHoareTripleChecker+Invalid, 5160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 169 IncrementalHoareTripleChecker+Valid, 4991 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-04-06 13:36:19,007 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [418 Valid, 2684 Invalid, 5160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [169 Valid, 4991 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-04-06 13:36:19,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 916 states. [2022-04-06 13:36:19,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 916 to 796. [2022-04-06 13:36:19,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 796 states, 622 states have (on average 1.3520900321543408) internal successors, (841), 634 states have internal predecessors, (841), 106 states have call successors, (106), 49 states have call predecessors, (106), 67 states have return successors, (136), 119 states have call predecessors, (136), 100 states have call successors, (136) [2022-04-06 13:36:19,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 796 states to 796 states and 1083 transitions. [2022-04-06 13:36:19,070 INFO L78 Accepts]: Start accepts. Automaton has 796 states and 1083 transitions. Word has length 55 [2022-04-06 13:36:19,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:36:19,070 INFO L478 AbstractCegarLoop]: Abstraction has 796 states and 1083 transitions. [2022-04-06 13:36:19,070 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.7333333333333334) internal successors, (41), 7 states have internal predecessors, (41), 3 states have call successors, (8), 8 states have call predecessors, (8), 3 states have return successors, (6), 4 states have call predecessors, (6), 2 states have call successors, (6) [2022-04-06 13:36:19,070 INFO L276 IsEmpty]: Start isEmpty. Operand 796 states and 1083 transitions. [2022-04-06 13:36:19,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-04-06 13:36:19,072 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:36:19,072 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 13:36:19,072 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-04-06 13:36:19,072 INFO L403 AbstractCegarLoop]: === Iteration 23 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:36:19,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:36:19,073 INFO L85 PathProgramCache]: Analyzing trace with hash -406359554, now seen corresponding path program 1 times [2022-04-06 13:36:19,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:36:19,073 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839174317] [2022-04-06 13:36:19,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:36:19,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:36:19,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:19,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:36:19,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:19,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:36:19,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:19,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 13:36:19,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:19,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-04-06 13:36:19,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:19,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-06 13:36:19,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:19,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-06 13:36:19,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:19,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 13:36:19,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:36:19,245 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839174317] [2022-04-06 13:36:19,245 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1839174317] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:36:19,245 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 13:36:19,245 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-04-06 13:36:19,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411003889] [2022-04-06 13:36:19,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:36:19,246 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-04-06 13:36:19,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:36:19,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-04-06 13:36:19,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2022-04-06 13:36:19,246 INFO L87 Difference]: Start difference. First operand 796 states and 1083 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) [2022-04-06 13:36:21,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:36:21,099 INFO L93 Difference]: Finished difference Result 932 states and 1310 transitions. [2022-04-06 13:36:21,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-04-06 13:36:21,099 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 [2022-04-06 13:36:21,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:36:21,102 INFO L225 Difference]: With dead ends: 932 [2022-04-06 13:36:21,102 INFO L226 Difference]: Without dead ends: 914 [2022-04-06 13:36:21,102 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2022-04-06 13:36:21,104 INFO L913 BasicCegarLoop]: 670 mSDtfsCounter, 1311 mSDsluCounter, 2030 mSDsCounter, 0 mSdLazyCounter, 4325 mSolverCounterSat, 528 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1313 SdHoareTripleChecker+Valid, 2700 SdHoareTripleChecker+Invalid, 4853 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 528 IncrementalHoareTripleChecker+Valid, 4325 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-04-06 13:36:21,104 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1313 Valid, 2700 Invalid, 4853 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [528 Valid, 4325 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-04-06 13:36:21,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 914 states. [2022-04-06 13:36:21,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 914 to 794. [2022-04-06 13:36:21,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 794 states, 621 states have (on average 1.3510466988727858) internal successors, (839), 633 states have internal predecessors, (839), 105 states have call successors, (105), 49 states have call predecessors, (105), 67 states have return successors, (135), 118 states have call predecessors, (135), 99 states have call successors, (135) [2022-04-06 13:36:21,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 794 states to 794 states and 1079 transitions. [2022-04-06 13:36:21,180 INFO L78 Accepts]: Start accepts. Automaton has 794 states and 1079 transitions. Word has length 55 [2022-04-06 13:36:21,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:36:21,180 INFO L478 AbstractCegarLoop]: Abstraction has 794 states and 1079 transitions. [2022-04-06 13:36:21,181 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.7333333333333334) internal successors, (41), 7 states have internal predecessors, (41), 2 states have call successors, (8), 7 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 1 states have call successors, (6) [2022-04-06 13:36:21,181 INFO L276 IsEmpty]: Start isEmpty. Operand 794 states and 1079 transitions. [2022-04-06 13:36:21,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-04-06 13:36:21,182 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:36:21,182 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 13:36:21,183 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-04-06 13:36:21,183 INFO L403 AbstractCegarLoop]: === Iteration 24 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:36:21,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:36:21,183 INFO L85 PathProgramCache]: Analyzing trace with hash 301163047, now seen corresponding path program 1 times [2022-04-06 13:36:21,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:36:21,183 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48396379] [2022-04-06 13:36:21,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:36:21,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:36:21,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:21,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:36:21,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:21,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:36:21,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:21,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 13:36:21,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:21,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-06 13:36:21,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:21,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-04-06 13:36:21,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:21,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-04-06 13:36:21,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:21,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 13:36:21,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:36:21,318 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48396379] [2022-04-06 13:36:21,318 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [48396379] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:36:21,318 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 13:36:21,318 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-04-06 13:36:21,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701071952] [2022-04-06 13:36:21,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:36:21,319 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-04-06 13:36:21,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:36:21,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-04-06 13:36:21,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-04-06 13:36:21,319 INFO L87 Difference]: Start difference. First operand 794 states and 1079 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) [2022-04-06 13:36:23,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:36:23,109 INFO L93 Difference]: Finished difference Result 979 states and 1361 transitions. [2022-04-06 13:36:23,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-04-06 13:36:23,109 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 [2022-04-06 13:36:23,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:36:23,112 INFO L225 Difference]: With dead ends: 979 [2022-04-06 13:36:23,112 INFO L226 Difference]: Without dead ends: 936 [2022-04-06 13:36:23,113 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2022-04-06 13:36:23,113 INFO L913 BasicCegarLoop]: 680 mSDtfsCounter, 1870 mSDsluCounter, 621 mSDsCounter, 0 mSdLazyCounter, 2112 mSolverCounterSat, 513 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1880 SdHoareTripleChecker+Valid, 1301 SdHoareTripleChecker+Invalid, 2625 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 513 IncrementalHoareTripleChecker+Valid, 2112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-04-06 13:36:23,114 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1880 Valid, 1301 Invalid, 2625 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [513 Valid, 2112 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-04-06 13:36:23,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 936 states. [2022-04-06 13:36:23,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 936 to 794. [2022-04-06 13:36:23,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 794 states, 621 states have (on average 1.3494363929146538) internal successors, (838), 633 states have internal predecessors, (838), 105 states have call successors, (105), 49 states have call predecessors, (105), 67 states have return successors, (135), 118 states have call predecessors, (135), 99 states have call successors, (135) [2022-04-06 13:36:23,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 794 states to 794 states and 1078 transitions. [2022-04-06 13:36:23,185 INFO L78 Accepts]: Start accepts. Automaton has 794 states and 1078 transitions. Word has length 56 [2022-04-06 13:36:23,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:36:23,185 INFO L478 AbstractCegarLoop]: Abstraction has 794 states and 1078 transitions. [2022-04-06 13:36:23,185 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.2) internal successors, (42), 4 states have internal predecessors, (42), 3 states have call successors, (8), 8 states have call predecessors, (8), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-04-06 13:36:23,185 INFO L276 IsEmpty]: Start isEmpty. Operand 794 states and 1078 transitions. [2022-04-06 13:36:23,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-04-06 13:36:23,186 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:36:23,186 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 13:36:23,186 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-04-06 13:36:23,186 INFO L403 AbstractCegarLoop]: === Iteration 25 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:36:23,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:36:23,187 INFO L85 PathProgramCache]: Analyzing trace with hash -979957660, now seen corresponding path program 1 times [2022-04-06 13:36:23,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:36:23,187 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269437672] [2022-04-06 13:36:23,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:36:23,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:36:23,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:23,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:36:23,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:23,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:36:23,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:23,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 13:36:23,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:23,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-04-06 13:36:23,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:23,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-06 13:36:23,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:23,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-06 13:36:23,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:23,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 13:36:23,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:36:23,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269437672] [2022-04-06 13:36:23,384 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1269437672] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:36:23,384 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 13:36:23,384 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-04-06 13:36:23,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987215409] [2022-04-06 13:36:23,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:36:23,385 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-04-06 13:36:23,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:36:23,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-04-06 13:36:23,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2022-04-06 13:36:23,385 INFO L87 Difference]: Start difference. First operand 794 states and 1078 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) [2022-04-06 13:36:25,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:36:25,698 INFO L93 Difference]: Finished difference Result 927 states and 1302 transitions. [2022-04-06 13:36:25,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-04-06 13:36:25,698 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 [2022-04-06 13:36:25,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:36:25,707 INFO L225 Difference]: With dead ends: 927 [2022-04-06 13:36:25,707 INFO L226 Difference]: Without dead ends: 909 [2022-04-06 13:36:25,708 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2022-04-06 13:36:25,708 INFO L913 BasicCegarLoop]: 653 mSDtfsCounter, 656 mSDsluCounter, 1958 mSDsCounter, 0 mSdLazyCounter, 5084 mSolverCounterSat, 268 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 658 SdHoareTripleChecker+Valid, 2611 SdHoareTripleChecker+Invalid, 5352 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 268 IncrementalHoareTripleChecker+Valid, 5084 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-04-06 13:36:25,709 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [658 Valid, 2611 Invalid, 5352 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [268 Valid, 5084 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-04-06 13:36:25,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 909 states. [2022-04-06 13:36:25,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 909 to 789. [2022-04-06 13:36:25,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 789 states, 618 states have (on average 1.3495145631067962) internal successors, (834), 630 states have internal predecessors, (834), 104 states have call successors, (104), 49 states have call predecessors, (104), 66 states have return successors, (133), 116 states have call predecessors, (133), 98 states have call successors, (133) [2022-04-06 13:36:25,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 789 states to 789 states and 1071 transitions. [2022-04-06 13:36:25,780 INFO L78 Accepts]: Start accepts. Automaton has 789 states and 1071 transitions. Word has length 56 [2022-04-06 13:36:25,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:36:25,780 INFO L478 AbstractCegarLoop]: Abstraction has 789 states and 1071 transitions. [2022-04-06 13:36:25,780 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.8) internal successors, (42), 7 states have internal predecessors, (42), 2 states have call successors, (8), 7 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 1 states have call successors, (6) [2022-04-06 13:36:25,780 INFO L276 IsEmpty]: Start isEmpty. Operand 789 states and 1071 transitions. [2022-04-06 13:36:25,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-04-06 13:36:25,781 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:36:25,781 INFO L499 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 13:36:25,781 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-04-06 13:36:25,782 INFO L403 AbstractCegarLoop]: === Iteration 26 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:36:25,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:36:25,782 INFO L85 PathProgramCache]: Analyzing trace with hash -1342046640, now seen corresponding path program 1 times [2022-04-06 13:36:25,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:36:25,782 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094637186] [2022-04-06 13:36:25,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:36:25,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:36:25,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:25,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:36:25,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:25,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:36:25,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:25,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 13:36:25,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:25,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-04-06 13:36:25,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:25,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-04-06 13:36:25,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:25,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-06 13:36:25,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:25,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 13:36:25,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:25,907 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 13:36:25,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:36:25,907 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094637186] [2022-04-06 13:36:25,907 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1094637186] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:36:25,908 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 13:36:25,908 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-04-06 13:36:25,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524513066] [2022-04-06 13:36:25,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:36:25,920 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-04-06 13:36:25,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:36:25,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-04-06 13:36:25,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2022-04-06 13:36:25,921 INFO L87 Difference]: Start difference. First operand 789 states and 1071 transitions. Second operand has 11 states, 11 states have (on average 4.909090909090909) internal successors, (54), 5 states have internal predecessors, (54), 3 states have call successors, (12), 9 states have call predecessors, (12), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-04-06 13:36:26,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:36:26,880 INFO L93 Difference]: Finished difference Result 1224 states and 1667 transitions. [2022-04-06 13:36:26,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-04-06 13:36:26,881 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.909090909090909) internal successors, (54), 5 states have internal predecessors, (54), 3 states have call successors, (12), 9 states have call predecessors, (12), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 73 [2022-04-06 13:36:26,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:36:26,891 INFO L225 Difference]: With dead ends: 1224 [2022-04-06 13:36:26,891 INFO L226 Difference]: Without dead ends: 778 [2022-04-06 13:36:26,912 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=93, Invalid=179, Unknown=0, NotChecked=0, Total=272 [2022-04-06 13:36:26,913 INFO L913 BasicCegarLoop]: 530 mSDtfsCounter, 1719 mSDsluCounter, 416 mSDsCounter, 0 mSdLazyCounter, 1167 mSolverCounterSat, 624 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1719 SdHoareTripleChecker+Valid, 946 SdHoareTripleChecker+Invalid, 1791 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 624 IncrementalHoareTripleChecker+Valid, 1167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-04-06 13:36:26,915 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1719 Valid, 946 Invalid, 1791 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [624 Valid, 1167 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-04-06 13:36:26,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 778 states. [2022-04-06 13:36:26,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 778 to 778. [2022-04-06 13:36:26,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 778 states, 609 states have (on average 1.341543513957307) internal successors, (817), 620 states have internal predecessors, (817), 103 states have call successors, (103), 49 states have call predecessors, (103), 65 states have return successors, (122), 115 states have call predecessors, (122), 97 states have call successors, (122) [2022-04-06 13:36:26,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 778 states to 778 states and 1042 transitions. [2022-04-06 13:36:26,981 INFO L78 Accepts]: Start accepts. Automaton has 778 states and 1042 transitions. Word has length 73 [2022-04-06 13:36:26,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:36:26,981 INFO L478 AbstractCegarLoop]: Abstraction has 778 states and 1042 transitions. [2022-04-06 13:36:26,981 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.909090909090909) internal successors, (54), 5 states have internal predecessors, (54), 3 states have call successors, (12), 9 states have call predecessors, (12), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-04-06 13:36:26,981 INFO L276 IsEmpty]: Start isEmpty. Operand 778 states and 1042 transitions. [2022-04-06 13:36:26,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-04-06 13:36:26,983 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:36:26,983 INFO L499 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 13:36:26,983 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-04-06 13:36:26,983 INFO L403 AbstractCegarLoop]: === Iteration 27 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:36:26,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:36:26,983 INFO L85 PathProgramCache]: Analyzing trace with hash 687939260, now seen corresponding path program 1 times [2022-04-06 13:36:26,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:36:26,983 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047148967] [2022-04-06 13:36:26,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:36:26,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:36:26,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:27,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:36:27,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:27,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:36:27,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:27,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 13:36:27,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:27,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-04-06 13:36:27,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:27,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-04-06 13:36:27,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:27,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-06 13:36:27,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:27,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 13:36:27,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:27,102 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 13:36:27,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:36:27,103 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047148967] [2022-04-06 13:36:27,103 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1047148967] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 13:36:27,103 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2064809755] [2022-04-06 13:36:27,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:36:27,103 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 13:36:27,103 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 13:36:27,111 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 13:36:27,153 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-04-06 13:36:27,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:27,352 INFO L263 TraceCheckSpWp]: Trace formula consists of 837 conjuncts, 6 conjunts are in the unsatisfiable core [2022-04-06 13:36:27,369 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 13:36:27,701 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 13:36:27,701 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 13:36:27,851 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 13:36:27,851 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2064809755] provided 1 perfect and 1 imperfect interpolant sequences [2022-04-06 13:36:27,851 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-04-06 13:36:27,852 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9, 5] total 15 [2022-04-06 13:36:27,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117233131] [2022-04-06 13:36:27,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:36:27,852 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-04-06 13:36:27,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:36:27,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-04-06 13:36:27,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2022-04-06 13:36:27,853 INFO L87 Difference]: Start difference. First operand 778 states and 1042 transitions. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 4 states have call successors, (12), 4 states have call predecessors, (12), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-04-06 13:36:28,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:36:28,334 INFO L93 Difference]: Finished difference Result 1087 states and 1442 transitions. [2022-04-06 13:36:28,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-04-06 13:36:28,334 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 4 states have call successors, (12), 4 states have call predecessors, (12), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 74 [2022-04-06 13:36:28,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:36:28,337 INFO L225 Difference]: With dead ends: 1087 [2022-04-06 13:36:28,337 INFO L226 Difference]: Without dead ends: 923 [2022-04-06 13:36:28,338 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 151 SyntacticMatches, 4 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2022-04-06 13:36:28,338 INFO L913 BasicCegarLoop]: 687 mSDtfsCounter, 760 mSDsluCounter, 887 mSDsCounter, 0 mSdLazyCounter, 412 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 765 SdHoareTripleChecker+Valid, 1574 SdHoareTripleChecker+Invalid, 453 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 412 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-04-06 13:36:28,338 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [765 Valid, 1574 Invalid, 453 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 412 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-04-06 13:36:28,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 923 states. [2022-04-06 13:36:28,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 923 to 816. [2022-04-06 13:36:28,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 816 states, 640 states have (on average 1.340625) internal successors, (858), 651 states have internal predecessors, (858), 106 states have call successors, (106), 51 states have call predecessors, (106), 69 states have return successors, (128), 120 states have call predecessors, (128), 100 states have call successors, (128) [2022-04-06 13:36:28,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 816 states to 816 states and 1092 transitions. [2022-04-06 13:36:28,407 INFO L78 Accepts]: Start accepts. Automaton has 816 states and 1092 transitions. Word has length 74 [2022-04-06 13:36:28,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:36:28,407 INFO L478 AbstractCegarLoop]: Abstraction has 816 states and 1092 transitions. [2022-04-06 13:36:28,407 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 4 states have call successors, (12), 4 states have call predecessors, (12), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-04-06 13:36:28,407 INFO L276 IsEmpty]: Start isEmpty. Operand 816 states and 1092 transitions. [2022-04-06 13:36:28,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-04-06 13:36:28,408 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:36:28,409 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 13:36:28,427 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-04-06 13:36:28,627 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-04-06 13:36:28,627 INFO L403 AbstractCegarLoop]: === Iteration 28 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:36:28,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:36:28,627 INFO L85 PathProgramCache]: Analyzing trace with hash -917115183, now seen corresponding path program 1 times [2022-04-06 13:36:28,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:36:28,628 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057178814] [2022-04-06 13:36:28,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:36:28,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:36:28,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:28,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:36:28,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:28,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:36:28,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:28,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 13:36:28,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:28,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-06 13:36:28,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:28,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-06 13:36:28,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:28,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-06 13:36:28,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:28,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-06 13:36:28,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:28,890 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 13:36:28,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:36:28,890 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057178814] [2022-04-06 13:36:28,890 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2057178814] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:36:28,890 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 13:36:28,891 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-04-06 13:36:28,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061694820] [2022-04-06 13:36:28,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:36:28,891 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-04-06 13:36:28,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:36:28,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-04-06 13:36:28,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=327, Unknown=0, NotChecked=0, Total=380 [2022-04-06 13:36:28,891 INFO L87 Difference]: Start difference. First operand 816 states and 1092 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) [2022-04-06 13:36:31,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:36:31,165 INFO L93 Difference]: Finished difference Result 842 states and 1120 transitions. [2022-04-06 13:36:31,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-04-06 13:36:31,165 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 [2022-04-06 13:36:31,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:36:31,167 INFO L225 Difference]: With dead ends: 842 [2022-04-06 13:36:31,167 INFO L226 Difference]: Without dead ends: 817 [2022-04-06 13:36:31,168 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=99, Invalid=603, Unknown=0, NotChecked=0, Total=702 [2022-04-06 13:36:31,168 INFO L913 BasicCegarLoop]: 565 mSDtfsCounter, 1662 mSDsluCounter, 1734 mSDsCounter, 0 mSdLazyCounter, 5877 mSolverCounterSat, 591 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1665 SdHoareTripleChecker+Valid, 2299 SdHoareTripleChecker+Invalid, 6468 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 591 IncrementalHoareTripleChecker+Valid, 5877 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-04-06 13:36:31,168 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1665 Valid, 2299 Invalid, 6468 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [591 Valid, 5877 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-04-06 13:36:31,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 817 states. [2022-04-06 13:36:31,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 817 to 815. [2022-04-06 13:36:31,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 815 states, 639 states have (on average 1.325508607198748) internal successors, (847), 650 states have internal predecessors, (847), 106 states have call successors, (106), 51 states have call predecessors, (106), 69 states have return successors, (128), 120 states have call predecessors, (128), 100 states have call successors, (128) [2022-04-06 13:36:31,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 815 states to 815 states and 1081 transitions. [2022-04-06 13:36:31,233 INFO L78 Accepts]: Start accepts. Automaton has 815 states and 1081 transitions. Word has length 59 [2022-04-06 13:36:31,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:36:31,233 INFO L478 AbstractCegarLoop]: Abstraction has 815 states and 1081 transitions. [2022-04-06 13:36:31,234 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 2.263157894736842) internal successors, (43), 10 states have internal predecessors, (43), 4 states have call successors, (9), 9 states have call predecessors, (9), 4 states have return successors, (7), 5 states have call predecessors, (7), 3 states have call successors, (7) [2022-04-06 13:36:31,234 INFO L276 IsEmpty]: Start isEmpty. Operand 815 states and 1081 transitions. [2022-04-06 13:36:31,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-04-06 13:36:31,235 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:36:31,235 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 13:36:31,235 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-04-06 13:36:31,235 INFO L403 AbstractCegarLoop]: === Iteration 29 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:36:31,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:36:31,236 INFO L85 PathProgramCache]: Analyzing trace with hash 1794647803, now seen corresponding path program 1 times [2022-04-06 13:36:31,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:36:31,236 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718169455] [2022-04-06 13:36:31,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:36:31,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:36:31,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:31,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:36:31,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:31,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:36:31,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:31,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 13:36:31,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:31,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-06 13:36:31,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:31,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:36:31,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:31,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-06 13:36:31,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:31,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 13:36:31,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:36:31,404 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718169455] [2022-04-06 13:36:31,404 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1718169455] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:36:31,404 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 13:36:31,404 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-04-06 13:36:31,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940310012] [2022-04-06 13:36:31,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:36:31,404 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-04-06 13:36:31,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:36:31,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-04-06 13:36:31,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2022-04-06 13:36:31,405 INFO L87 Difference]: Start difference. First operand 815 states and 1081 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) [2022-04-06 13:36:33,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:36:33,046 INFO L93 Difference]: Finished difference Result 832 states and 1099 transitions. [2022-04-06 13:36:33,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-04-06 13:36:33,046 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 [2022-04-06 13:36:33,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:36:33,048 INFO L225 Difference]: With dead ends: 832 [2022-04-06 13:36:33,048 INFO L226 Difference]: Without dead ends: 812 [2022-04-06 13:36:33,049 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2022-04-06 13:36:33,049 INFO L913 BasicCegarLoop]: 576 mSDtfsCounter, 941 mSDsluCounter, 1548 mSDsCounter, 0 mSdLazyCounter, 4967 mSolverCounterSat, 336 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 943 SdHoareTripleChecker+Valid, 2124 SdHoareTripleChecker+Invalid, 5303 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 336 IncrementalHoareTripleChecker+Valid, 4967 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-04-06 13:36:33,049 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [943 Valid, 2124 Invalid, 5303 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [336 Valid, 4967 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-04-06 13:36:33,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 812 states. [2022-04-06 13:36:33,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 812 to 812. [2022-04-06 13:36:33,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 812 states, 637 states have (on average 1.3249607535321821) internal successors, (844), 648 states have internal predecessors, (844), 105 states have call successors, (105), 51 states have call predecessors, (105), 69 states have return successors, (127), 119 states have call predecessors, (127), 99 states have call successors, (127) [2022-04-06 13:36:33,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 812 states to 812 states and 1076 transitions. [2022-04-06 13:36:33,139 INFO L78 Accepts]: Start accepts. Automaton has 812 states and 1076 transitions. Word has length 58 [2022-04-06 13:36:33,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:36:33,151 INFO L478 AbstractCegarLoop]: Abstraction has 812 states and 1076 transitions. [2022-04-06 13:36:33,151 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.75) internal successors, (44), 8 states have internal predecessors, (44), 2 states have call successors, (8), 7 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 1 states have call successors, (6) [2022-04-06 13:36:33,151 INFO L276 IsEmpty]: Start isEmpty. Operand 812 states and 1076 transitions. [2022-04-06 13:36:33,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-04-06 13:36:33,168 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:36:33,168 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 13:36:33,168 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-04-06 13:36:33,168 INFO L403 AbstractCegarLoop]: === Iteration 30 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:36:33,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:36:33,169 INFO L85 PathProgramCache]: Analyzing trace with hash 1644249478, now seen corresponding path program 1 times [2022-04-06 13:36:33,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:36:33,169 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597983654] [2022-04-06 13:36:33,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:36:33,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:36:33,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:33,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:36:33,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:33,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:36:33,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:33,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 13:36:33,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:33,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-06 13:36:33,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:33,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-06 13:36:33,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:33,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-06 13:36:33,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:33,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 13:36:33,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:36:33,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597983654] [2022-04-06 13:36:33,384 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1597983654] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:36:33,384 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 13:36:33,384 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-04-06 13:36:33,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254157328] [2022-04-06 13:36:33,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:36:33,384 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-04-06 13:36:33,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:36:33,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-04-06 13:36:33,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2022-04-06 13:36:33,385 INFO L87 Difference]: Start difference. First operand 812 states and 1076 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) [2022-04-06 13:36:34,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:36:34,920 INFO L93 Difference]: Finished difference Result 865 states and 1131 transitions. [2022-04-06 13:36:34,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-04-06 13:36:34,920 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 [2022-04-06 13:36:34,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:36:34,926 INFO L225 Difference]: With dead ends: 865 [2022-04-06 13:36:34,927 INFO L226 Difference]: Without dead ends: 800 [2022-04-06 13:36:34,927 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=92, Invalid=414, Unknown=0, NotChecked=0, Total=506 [2022-04-06 13:36:34,928 INFO L913 BasicCegarLoop]: 552 mSDtfsCounter, 962 mSDsluCounter, 1231 mSDsCounter, 0 mSdLazyCounter, 4120 mSolverCounterSat, 351 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 965 SdHoareTripleChecker+Valid, 1783 SdHoareTripleChecker+Invalid, 4471 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 351 IncrementalHoareTripleChecker+Valid, 4120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-04-06 13:36:34,928 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [965 Valid, 1783 Invalid, 4471 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [351 Valid, 4120 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-04-06 13:36:34,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 800 states. [2022-04-06 13:36:35,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 800 to 800. [2022-04-06 13:36:35,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 800 states, 628 states have (on average 1.320063694267516) internal successors, (829), 639 states have internal predecessors, (829), 102 states have call successors, (102), 51 states have call predecessors, (102), 69 states have return successors, (124), 116 states have call predecessors, (124), 96 states have call successors, (124) [2022-04-06 13:36:35,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 800 states to 800 states and 1055 transitions. [2022-04-06 13:36:35,024 INFO L78 Accepts]: Start accepts. Automaton has 800 states and 1055 transitions. Word has length 59 [2022-04-06 13:36:35,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:36:35,024 INFO L478 AbstractCegarLoop]: Abstraction has 800 states and 1055 transitions. [2022-04-06 13:36:35,024 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.8125) internal successors, (45), 8 states have internal predecessors, (45), 3 states have call successors, (8), 8 states have call predecessors, (8), 3 states have return successors, (6), 4 states have call predecessors, (6), 2 states have call successors, (6) [2022-04-06 13:36:35,024 INFO L276 IsEmpty]: Start isEmpty. Operand 800 states and 1055 transitions. [2022-04-06 13:36:35,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-04-06 13:36:35,025 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:36:35,025 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 13:36:35,025 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-04-06 13:36:35,026 INFO L403 AbstractCegarLoop]: === Iteration 31 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:36:35,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:36:35,026 INFO L85 PathProgramCache]: Analyzing trace with hash -887424146, now seen corresponding path program 1 times [2022-04-06 13:36:35,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:36:35,026 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28058452] [2022-04-06 13:36:35,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:36:35,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:36:35,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:35,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:36:35,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:35,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:36:35,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:35,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 13:36:35,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:35,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-06 13:36:35,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:35,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-06 13:36:35,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:35,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-06 13:36:35,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:35,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-06 13:36:35,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:35,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 13:36:35,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:36:35,178 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [28058452] [2022-04-06 13:36:35,178 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [28058452] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:36:35,178 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 13:36:35,178 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-04-06 13:36:35,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688589196] [2022-04-06 13:36:35,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:36:35,179 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-04-06 13:36:35,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:36:35,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-04-06 13:36:35,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-04-06 13:36:35,180 INFO L87 Difference]: Start difference. First operand 800 states and 1055 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) [2022-04-06 13:36:36,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:36:36,341 INFO L93 Difference]: Finished difference Result 950 states and 1263 transitions. [2022-04-06 13:36:36,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-04-06 13:36:36,342 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 [2022-04-06 13:36:36,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:36:36,344 INFO L225 Difference]: With dead ends: 950 [2022-04-06 13:36:36,344 INFO L226 Difference]: Without dead ends: 845 [2022-04-06 13:36:36,344 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2022-04-06 13:36:36,345 INFO L913 BasicCegarLoop]: 540 mSDtfsCounter, 1602 mSDsluCounter, 558 mSDsCounter, 0 mSdLazyCounter, 1360 mSolverCounterSat, 598 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1604 SdHoareTripleChecker+Valid, 1098 SdHoareTripleChecker+Invalid, 1958 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 598 IncrementalHoareTripleChecker+Valid, 1360 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-04-06 13:36:36,345 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1604 Valid, 1098 Invalid, 1958 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [598 Valid, 1360 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-04-06 13:36:36,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 845 states. [2022-04-06 13:36:36,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 845 to 807. [2022-04-06 13:36:36,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 807 states, 633 states have (on average 1.320695102685624) internal successors, (836), 645 states have internal predecessors, (836), 103 states have call successors, (103), 51 states have call predecessors, (103), 70 states have return successors, (131), 117 states have call predecessors, (131), 97 states have call successors, (131) [2022-04-06 13:36:36,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 807 states to 807 states and 1070 transitions. [2022-04-06 13:36:36,452 INFO L78 Accepts]: Start accepts. Automaton has 807 states and 1070 transitions. Word has length 60 [2022-04-06 13:36:36,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:36:36,452 INFO L478 AbstractCegarLoop]: Abstraction has 807 states and 1070 transitions. [2022-04-06 13:36:36,452 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.0) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-04-06 13:36:36,452 INFO L276 IsEmpty]: Start isEmpty. Operand 807 states and 1070 transitions. [2022-04-06 13:36:36,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-04-06 13:36:36,454 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:36:36,454 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 13:36:36,454 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-04-06 13:36:36,454 INFO L403 AbstractCegarLoop]: === Iteration 32 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:36:36,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:36:36,454 INFO L85 PathProgramCache]: Analyzing trace with hash 1397439309, now seen corresponding path program 1 times [2022-04-06 13:36:36,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:36:36,454 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650917528] [2022-04-06 13:36:36,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:36:36,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:36:36,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:36,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:36:36,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:36,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:36:36,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:36,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 13:36:36,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:36,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-06 13:36:36,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:36,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-06 13:36:36,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:36,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-06 13:36:36,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:36,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-06 13:36:36,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:36,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 13:36:36,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:36:36,642 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650917528] [2022-04-06 13:36:36,642 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [650917528] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:36:36,642 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 13:36:36,642 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-04-06 13:36:36,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476210813] [2022-04-06 13:36:36,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:36:36,642 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-04-06 13:36:36,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:36:36,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-04-06 13:36:36,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2022-04-06 13:36:36,643 INFO L87 Difference]: Start difference. First operand 807 states and 1070 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) [2022-04-06 13:36:38,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:36:38,171 INFO L93 Difference]: Finished difference Result 829 states and 1093 transitions. [2022-04-06 13:36:38,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-04-06 13:36:38,171 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 [2022-04-06 13:36:38,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:36:38,173 INFO L225 Difference]: With dead ends: 829 [2022-04-06 13:36:38,173 INFO L226 Difference]: Without dead ends: 805 [2022-04-06 13:36:38,174 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2022-04-06 13:36:38,174 INFO L913 BasicCegarLoop]: 558 mSDtfsCounter, 359 mSDsluCounter, 1381 mSDsCounter, 0 mSdLazyCounter, 3977 mSolverCounterSat, 118 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 362 SdHoareTripleChecker+Valid, 1939 SdHoareTripleChecker+Invalid, 4095 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 118 IncrementalHoareTripleChecker+Valid, 3977 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-04-06 13:36:38,175 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [362 Valid, 1939 Invalid, 4095 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [118 Valid, 3977 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-04-06 13:36:38,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 805 states. [2022-04-06 13:36:38,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 805 to 805. [2022-04-06 13:36:38,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 805 states, 632 states have (on average 1.3196202531645569) internal successors, (834), 644 states have internal predecessors, (834), 102 states have call successors, (102), 51 states have call predecessors, (102), 70 states have return successors, (130), 116 states have call predecessors, (130), 96 states have call successors, (130) [2022-04-06 13:36:38,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 805 states to 805 states and 1066 transitions. [2022-04-06 13:36:38,238 INFO L78 Accepts]: Start accepts. Automaton has 805 states and 1066 transitions. Word has length 60 [2022-04-06 13:36:38,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:36:38,238 INFO L478 AbstractCegarLoop]: Abstraction has 805 states and 1066 transitions. [2022-04-06 13:36:38,238 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.75) internal successors, (44), 7 states have internal predecessors, (44), 3 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 4 states have call predecessors, (7), 2 states have call successors, (7) [2022-04-06 13:36:38,238 INFO L276 IsEmpty]: Start isEmpty. Operand 805 states and 1066 transitions. [2022-04-06 13:36:38,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-04-06 13:36:38,240 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:36:38,240 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 13:36:38,240 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-04-06 13:36:38,240 INFO L403 AbstractCegarLoop]: === Iteration 33 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:36:38,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:36:38,240 INFO L85 PathProgramCache]: Analyzing trace with hash 303583592, now seen corresponding path program 1 times [2022-04-06 13:36:38,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:36:38,240 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462763370] [2022-04-06 13:36:38,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:36:38,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:36:38,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:38,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:36:38,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:38,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:36:38,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:38,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 13:36:38,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:38,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-06 13:36:38,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:38,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-06 13:36:38,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:38,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-04-06 13:36:38,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:38,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 13:36:38,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:36:38,411 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462763370] [2022-04-06 13:36:38,411 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1462763370] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:36:38,411 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 13:36:38,411 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-04-06 13:36:38,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736663808] [2022-04-06 13:36:38,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:36:38,411 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-04-06 13:36:38,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:36:38,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-04-06 13:36:38,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2022-04-06 13:36:38,412 INFO L87 Difference]: Start difference. First operand 805 states and 1066 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) [2022-04-06 13:36:39,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:36:39,538 INFO L93 Difference]: Finished difference Result 839 states and 1100 transitions. [2022-04-06 13:36:39,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-04-06 13:36:39,538 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 [2022-04-06 13:36:39,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:36:39,540 INFO L225 Difference]: With dead ends: 839 [2022-04-06 13:36:39,541 INFO L226 Difference]: Without dead ends: 807 [2022-04-06 13:36:39,541 INFO L912 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 [2022-04-06 13:36:39,541 INFO L913 BasicCegarLoop]: 538 mSDtfsCounter, 1228 mSDsluCounter, 589 mSDsCounter, 0 mSdLazyCounter, 1751 mSolverCounterSat, 430 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1230 SdHoareTripleChecker+Valid, 1127 SdHoareTripleChecker+Invalid, 2181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 430 IncrementalHoareTripleChecker+Valid, 1751 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-04-06 13:36:39,541 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1230 Valid, 1127 Invalid, 2181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [430 Valid, 1751 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-04-06 13:36:39,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 807 states. [2022-04-06 13:36:39,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 807 to 805. [2022-04-06 13:36:39,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 805 states, 632 states have (on average 1.3180379746835442) internal successors, (833), 644 states have internal predecessors, (833), 102 states have call successors, (102), 51 states have call predecessors, (102), 70 states have return successors, (130), 116 states have call predecessors, (130), 96 states have call successors, (130) [2022-04-06 13:36:39,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 805 states to 805 states and 1065 transitions. [2022-04-06 13:36:39,604 INFO L78 Accepts]: Start accepts. Automaton has 805 states and 1065 transitions. Word has length 60 [2022-04-06 13:36:39,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:36:39,605 INFO L478 AbstractCegarLoop]: Abstraction has 805 states and 1065 transitions. [2022-04-06 13:36:39,605 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (8), 8 states have call predecessors, (8), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2022-04-06 13:36:39,605 INFO L276 IsEmpty]: Start isEmpty. Operand 805 states and 1065 transitions. [2022-04-06 13:36:39,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-04-06 13:36:39,606 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:36:39,606 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 13:36:39,606 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-04-06 13:36:39,606 INFO L403 AbstractCegarLoop]: === Iteration 34 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:36:39,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:36:39,607 INFO L85 PathProgramCache]: Analyzing trace with hash 48847047, now seen corresponding path program 1 times [2022-04-06 13:36:39,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:36:39,607 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535024663] [2022-04-06 13:36:39,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:36:39,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:36:39,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:39,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:36:39,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:39,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:36:39,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:39,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 13:36:39,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:39,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-06 13:36:39,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:39,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-06 13:36:39,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:39,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-04-06 13:36:39,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:39,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 13:36:39,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:36:39,824 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535024663] [2022-04-06 13:36:39,824 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1535024663] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:36:39,824 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 13:36:39,824 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-04-06 13:36:39,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778540061] [2022-04-06 13:36:39,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:36:39,824 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-04-06 13:36:39,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:36:39,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-04-06 13:36:39,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2022-04-06 13:36:39,825 INFO L87 Difference]: Start difference. First operand 805 states and 1065 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) [2022-04-06 13:36:41,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:36:41,238 INFO L93 Difference]: Finished difference Result 838 states and 1104 transitions. [2022-04-06 13:36:41,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-04-06 13:36:41,238 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 [2022-04-06 13:36:41,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:36:41,240 INFO L225 Difference]: With dead ends: 838 [2022-04-06 13:36:41,240 INFO L226 Difference]: Without dead ends: 797 [2022-04-06 13:36:41,241 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=92, Invalid=414, Unknown=0, NotChecked=0, Total=506 [2022-04-06 13:36:41,241 INFO L913 BasicCegarLoop]: 552 mSDtfsCounter, 1278 mSDsluCounter, 1215 mSDsCounter, 0 mSdLazyCounter, 3483 mSolverCounterSat, 447 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1281 SdHoareTripleChecker+Valid, 1767 SdHoareTripleChecker+Invalid, 3930 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 447 IncrementalHoareTripleChecker+Valid, 3483 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-04-06 13:36:41,242 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1281 Valid, 1767 Invalid, 3930 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [447 Valid, 3483 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-04-06 13:36:41,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 797 states. [2022-04-06 13:36:41,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 797 to 797. [2022-04-06 13:36:41,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 797 states, 626 states have (on average 1.3130990415335464) internal successors, (822), 638 states have internal predecessors, (822), 100 states have call successors, (100), 51 states have call predecessors, (100), 70 states have return successors, (128), 114 states have call predecessors, (128), 94 states have call successors, (128) [2022-04-06 13:36:41,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 797 states to 797 states and 1050 transitions. [2022-04-06 13:36:41,311 INFO L78 Accepts]: Start accepts. Automaton has 797 states and 1050 transitions. Word has length 60 [2022-04-06 13:36:41,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:36:41,311 INFO L478 AbstractCegarLoop]: Abstraction has 797 states and 1050 transitions. [2022-04-06 13:36:41,311 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.875) internal successors, (46), 8 states have internal predecessors, (46), 3 states have call successors, (8), 8 states have call predecessors, (8), 3 states have return successors, (6), 4 states have call predecessors, (6), 2 states have call successors, (6) [2022-04-06 13:36:41,311 INFO L276 IsEmpty]: Start isEmpty. Operand 797 states and 1050 transitions. [2022-04-06 13:36:41,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-04-06 13:36:41,312 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:36:41,312 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 13:36:41,312 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-04-06 13:36:41,312 INFO L403 AbstractCegarLoop]: === Iteration 35 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:36:41,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:36:41,313 INFO L85 PathProgramCache]: Analyzing trace with hash 330565666, now seen corresponding path program 1 times [2022-04-06 13:36:41,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:36:41,313 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938921595] [2022-04-06 13:36:41,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:36:41,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:36:41,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:41,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:36:41,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:41,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:36:41,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:41,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 13:36:41,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:41,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-06 13:36:41,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:41,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-06 13:36:41,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:41,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-06 13:36:41,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:41,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-04-06 13:36:41,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:41,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 13:36:41,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:36:41,480 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938921595] [2022-04-06 13:36:41,480 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1938921595] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:36:41,480 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 13:36:41,480 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-04-06 13:36:41,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298054784] [2022-04-06 13:36:41,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:36:41,481 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-04-06 13:36:41,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:36:41,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-04-06 13:36:41,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2022-04-06 13:36:41,481 INFO L87 Difference]: Start difference. First operand 797 states and 1050 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) [2022-04-06 13:36:42,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:36:42,569 INFO L93 Difference]: Finished difference Result 845 states and 1118 transitions. [2022-04-06 13:36:42,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-04-06 13:36:42,569 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 [2022-04-06 13:36:42,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:36:42,571 INFO L225 Difference]: With dead ends: 845 [2022-04-06 13:36:42,571 INFO L226 Difference]: Without dead ends: 811 [2022-04-06 13:36:42,572 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2022-04-06 13:36:42,572 INFO L913 BasicCegarLoop]: 522 mSDtfsCounter, 1213 mSDsluCounter, 773 mSDsCounter, 0 mSdLazyCounter, 1888 mSolverCounterSat, 490 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1215 SdHoareTripleChecker+Valid, 1295 SdHoareTripleChecker+Invalid, 2378 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 490 IncrementalHoareTripleChecker+Valid, 1888 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-04-06 13:36:42,572 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1215 Valid, 1295 Invalid, 2378 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [490 Valid, 1888 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-04-06 13:36:42,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 811 states. [2022-04-06 13:36:42,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 811 to 801. [2022-04-06 13:36:42,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 801 states, 628 states have (on average 1.3121019108280254) internal successors, (824), 642 states have internal predecessors, (824), 100 states have call successors, (100), 51 states have call predecessors, (100), 72 states have return successors, (144), 114 states have call predecessors, (144), 94 states have call successors, (144) [2022-04-06 13:36:42,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 801 states to 801 states and 1068 transitions. [2022-04-06 13:36:42,634 INFO L78 Accepts]: Start accepts. Automaton has 801 states and 1068 transitions. Word has length 61 [2022-04-06 13:36:42,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:36:42,634 INFO L478 AbstractCegarLoop]: Abstraction has 801 states and 1068 transitions. [2022-04-06 13:36:42,634 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.75) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-04-06 13:36:42,634 INFO L276 IsEmpty]: Start isEmpty. Operand 801 states and 1068 transitions. [2022-04-06 13:36:42,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-04-06 13:36:42,636 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:36:42,636 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 13:36:42,636 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-04-06 13:36:42,636 INFO L403 AbstractCegarLoop]: === Iteration 36 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:36:42,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:36:42,636 INFO L85 PathProgramCache]: Analyzing trace with hash 1992943065, now seen corresponding path program 1 times [2022-04-06 13:36:42,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:36:42,636 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265250868] [2022-04-06 13:36:42,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:36:42,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:36:42,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:42,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:36:42,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:42,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:36:42,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:42,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 13:36:42,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:42,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-06 13:36:42,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:42,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-06 13:36:42,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:42,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-06 13:36:42,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:42,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 13:36:42,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:42,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-06 13:36:42,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:42,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 13:36:42,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:36:42,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265250868] [2022-04-06 13:36:42,905 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1265250868] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:36:42,905 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 13:36:42,905 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-04-06 13:36:42,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075709354] [2022-04-06 13:36:42,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:36:42,905 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-04-06 13:36:42,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:36:42,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-04-06 13:36:42,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=359, Unknown=0, NotChecked=0, Total=420 [2022-04-06 13:36:42,906 INFO L87 Difference]: Start difference. First operand 801 states and 1068 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) [2022-04-06 13:36:44,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:36:44,590 INFO L93 Difference]: Finished difference Result 825 states and 1093 transitions. [2022-04-06 13:36:44,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-04-06 13:36:44,591 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 [2022-04-06 13:36:44,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:36:44,593 INFO L225 Difference]: With dead ends: 825 [2022-04-06 13:36:44,593 INFO L226 Difference]: Without dead ends: 801 [2022-04-06 13:36:44,593 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=120, Invalid=692, Unknown=0, NotChecked=0, Total=812 [2022-04-06 13:36:44,594 INFO L913 BasicCegarLoop]: 527 mSDtfsCounter, 695 mSDsluCounter, 1716 mSDsCounter, 0 mSdLazyCounter, 4863 mSolverCounterSat, 239 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 697 SdHoareTripleChecker+Valid, 2243 SdHoareTripleChecker+Invalid, 5102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 239 IncrementalHoareTripleChecker+Valid, 4863 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-04-06 13:36:44,594 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [697 Valid, 2243 Invalid, 5102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [239 Valid, 4863 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-04-06 13:36:44,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 801 states. [2022-04-06 13:36:44,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 801 to 799. [2022-04-06 13:36:44,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 799 states, 627 states have (on average 1.3110047846889952) internal successors, (822), 641 states have internal predecessors, (822), 99 states have call successors, (99), 51 states have call predecessors, (99), 72 states have return successors, (143), 113 states have call predecessors, (143), 93 states have call successors, (143) [2022-04-06 13:36:44,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 799 states to 799 states and 1064 transitions. [2022-04-06 13:36:44,654 INFO L78 Accepts]: Start accepts. Automaton has 799 states and 1064 transitions. Word has length 67 [2022-04-06 13:36:44,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:36:44,654 INFO L478 AbstractCegarLoop]: Abstraction has 799 states and 1064 transitions. [2022-04-06 13:36:44,655 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 2.45) internal successors, (49), 10 states have internal predecessors, (49), 4 states have call successors, (10), 10 states have call predecessors, (10), 4 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) [2022-04-06 13:36:44,655 INFO L276 IsEmpty]: Start isEmpty. Operand 799 states and 1064 transitions. [2022-04-06 13:36:44,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-04-06 13:36:44,656 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:36:44,656 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 13:36:44,656 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-04-06 13:36:44,656 INFO L403 AbstractCegarLoop]: === Iteration 37 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:36:44,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:36:44,656 INFO L85 PathProgramCache]: Analyzing trace with hash -1749867339, now seen corresponding path program 1 times [2022-04-06 13:36:44,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:36:44,656 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527657889] [2022-04-06 13:36:44,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:36:44,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:36:44,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:44,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:36:44,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:44,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:36:44,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:44,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 13:36:44,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:44,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-06 13:36:44,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:44,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-06 13:36:44,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:44,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-04-06 13:36:44,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:44,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-06 13:36:44,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:44,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 13:36:44,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:36:44,925 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527657889] [2022-04-06 13:36:44,925 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1527657889] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:36:44,925 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 13:36:44,925 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-04-06 13:36:44,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024093793] [2022-04-06 13:36:44,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:36:44,926 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-04-06 13:36:44,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:36:44,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-04-06 13:36:44,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=327, Unknown=0, NotChecked=0, Total=380 [2022-04-06 13:36:44,928 INFO L87 Difference]: Start difference. First operand 799 states and 1064 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) [2022-04-06 13:36:46,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:36:46,924 INFO L93 Difference]: Finished difference Result 823 states and 1089 transitions. [2022-04-06 13:36:46,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-04-06 13:36:46,924 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 [2022-04-06 13:36:46,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:36:46,926 INFO L225 Difference]: With dead ends: 823 [2022-04-06 13:36:46,926 INFO L226 Difference]: Without dead ends: 799 [2022-04-06 13:36:46,926 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=99, Invalid=603, Unknown=0, NotChecked=0, Total=702 [2022-04-06 13:36:46,927 INFO L913 BasicCegarLoop]: 504 mSDtfsCounter, 935 mSDsluCounter, 1510 mSDsCounter, 0 mSdLazyCounter, 4837 mSolverCounterSat, 333 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 938 SdHoareTripleChecker+Valid, 2014 SdHoareTripleChecker+Invalid, 5170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 333 IncrementalHoareTripleChecker+Valid, 4837 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-04-06 13:36:46,927 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [938 Valid, 2014 Invalid, 5170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [333 Valid, 4837 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-04-06 13:36:46,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 799 states. [2022-04-06 13:36:46,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 799 to 797. [2022-04-06 13:36:46,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 797 states, 626 states have (on average 1.3099041533546325) internal successors, (820), 640 states have internal predecessors, (820), 98 states have call successors, (98), 51 states have call predecessors, (98), 72 states have return successors, (142), 112 states have call predecessors, (142), 92 states have call successors, (142) [2022-04-06 13:36:46,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 797 states to 797 states and 1060 transitions. [2022-04-06 13:36:46,987 INFO L78 Accepts]: Start accepts. Automaton has 797 states and 1060 transitions. Word has length 62 [2022-04-06 13:36:46,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:36:46,987 INFO L478 AbstractCegarLoop]: Abstraction has 797 states and 1060 transitions. [2022-04-06 13:36:46,987 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 2.4210526315789473) internal successors, (46), 10 states have internal predecessors, (46), 4 states have call successors, (9), 9 states have call predecessors, (9), 4 states have return successors, (7), 5 states have call predecessors, (7), 3 states have call successors, (7) [2022-04-06 13:36:46,987 INFO L276 IsEmpty]: Start isEmpty. Operand 797 states and 1060 transitions. [2022-04-06 13:36:46,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-04-06 13:36:46,989 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:36:46,989 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 13:36:46,989 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-04-06 13:36:46,989 INFO L403 AbstractCegarLoop]: === Iteration 38 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:36:46,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:36:46,989 INFO L85 PathProgramCache]: Analyzing trace with hash -418163084, now seen corresponding path program 1 times [2022-04-06 13:36:46,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:36:46,989 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316909142] [2022-04-06 13:36:46,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:36:46,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:36:46,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:47,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:36:47,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:47,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:36:47,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:47,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 13:36:47,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:47,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-06 13:36:47,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:47,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-04-06 13:36:47,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:47,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-06 13:36:47,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:47,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-06 13:36:47,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:47,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 13:36:47,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:36:47,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316909142] [2022-04-06 13:36:47,270 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [316909142] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:36:47,270 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 13:36:47,271 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-04-06 13:36:47,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178168983] [2022-04-06 13:36:47,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:36:47,271 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-04-06 13:36:47,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:36:47,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-04-06 13:36:47,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=296, Unknown=0, NotChecked=0, Total=342 [2022-04-06 13:36:47,271 INFO L87 Difference]: Start difference. First operand 797 states and 1060 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) [2022-04-06 13:36:48,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:36:48,987 INFO L93 Difference]: Finished difference Result 814 states and 1078 transitions. [2022-04-06 13:36:48,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-04-06 13:36:48,987 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 [2022-04-06 13:36:48,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:36:48,989 INFO L225 Difference]: With dead ends: 814 [2022-04-06 13:36:48,989 INFO L226 Difference]: Without dead ends: 792 [2022-04-06 13:36:48,990 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=61, Invalid=401, Unknown=0, NotChecked=0, Total=462 [2022-04-06 13:36:48,990 INFO L913 BasicCegarLoop]: 527 mSDtfsCounter, 600 mSDsluCounter, 1750 mSDsCounter, 0 mSdLazyCounter, 5039 mSolverCounterSat, 208 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 602 SdHoareTripleChecker+Valid, 2277 SdHoareTripleChecker+Invalid, 5247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 208 IncrementalHoareTripleChecker+Valid, 5039 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-04-06 13:36:48,990 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [602 Valid, 2277 Invalid, 5247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [208 Valid, 5039 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-04-06 13:36:48,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 792 states. [2022-04-06 13:36:49,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 792 to 792. [2022-04-06 13:36:49,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 792 states, 623 states have (on average 1.3097913322632424) internal successors, (816), 637 states have internal predecessors, (816), 97 states have call successors, (97), 51 states have call predecessors, (97), 71 states have return successors, (140), 110 states have call predecessors, (140), 91 states have call successors, (140) [2022-04-06 13:36:49,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 792 states to 792 states and 1053 transitions. [2022-04-06 13:36:49,055 INFO L78 Accepts]: Start accepts. Automaton has 792 states and 1053 transitions. Word has length 63 [2022-04-06 13:36:49,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:36:49,055 INFO L478 AbstractCegarLoop]: Abstraction has 792 states and 1053 transitions. [2022-04-06 13:36:49,055 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 9 states have internal predecessors, (47), 2 states have call successors, (9), 8 states have call predecessors, (9), 5 states have return successors, (7), 5 states have call predecessors, (7), 1 states have call successors, (7) [2022-04-06 13:36:49,055 INFO L276 IsEmpty]: Start isEmpty. Operand 792 states and 1053 transitions. [2022-04-06 13:36:49,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-04-06 13:36:49,056 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:36:49,057 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 13:36:49,057 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-04-06 13:36:49,057 INFO L403 AbstractCegarLoop]: === Iteration 39 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:36:49,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:36:49,057 INFO L85 PathProgramCache]: Analyzing trace with hash -2020935180, now seen corresponding path program 1 times [2022-04-06 13:36:49,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:36:49,057 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581409210] [2022-04-06 13:36:49,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:36:49,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:36:49,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:49,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:36:49,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:49,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:36:49,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:49,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 13:36:49,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:49,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-06 13:36:49,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:49,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-06 13:36:49,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:49,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-06 13:36:49,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:49,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-06 13:36:49,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:49,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 13:36:49,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:36:49,302 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581409210] [2022-04-06 13:36:49,302 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1581409210] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:36:49,302 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 13:36:49,302 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-04-06 13:36:49,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966426541] [2022-04-06 13:36:49,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:36:49,303 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-04-06 13:36:49,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:36:49,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-04-06 13:36:49,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=296, Unknown=0, NotChecked=0, Total=342 [2022-04-06 13:36:49,303 INFO L87 Difference]: Start difference. First operand 792 states and 1053 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) [2022-04-06 13:36:50,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:36:50,841 INFO L93 Difference]: Finished difference Result 809 states and 1071 transitions. [2022-04-06 13:36:50,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-04-06 13:36:50,841 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 [2022-04-06 13:36:50,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:36:50,843 INFO L225 Difference]: With dead ends: 809 [2022-04-06 13:36:50,843 INFO L226 Difference]: Without dead ends: 787 [2022-04-06 13:36:50,844 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=54, Invalid=366, Unknown=0, NotChecked=0, Total=420 [2022-04-06 13:36:50,844 INFO L913 BasicCegarLoop]: 517 mSDtfsCounter, 1161 mSDsluCounter, 1745 mSDsCounter, 0 mSdLazyCounter, 5341 mSolverCounterSat, 406 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1163 SdHoareTripleChecker+Valid, 2262 SdHoareTripleChecker+Invalid, 5747 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 406 IncrementalHoareTripleChecker+Valid, 5341 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-04-06 13:36:50,856 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1163 Valid, 2262 Invalid, 5747 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [406 Valid, 5341 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-04-06 13:36:50,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 787 states. [2022-04-06 13:36:50,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 787 to 787. [2022-04-06 13:36:50,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 787 states, 620 states have (on average 1.3096774193548386) internal successors, (812), 634 states have internal predecessors, (812), 96 states have call successors, (96), 51 states have call predecessors, (96), 70 states have return successors, (138), 108 states have call predecessors, (138), 90 states have call successors, (138) [2022-04-06 13:36:50,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 787 states to 787 states and 1046 transitions. [2022-04-06 13:36:50,917 INFO L78 Accepts]: Start accepts. Automaton has 787 states and 1046 transitions. Word has length 62 [2022-04-06 13:36:50,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:36:50,917 INFO L478 AbstractCegarLoop]: Abstraction has 787 states and 1046 transitions. [2022-04-06 13:36:50,917 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.4210526315789473) internal successors, (46), 9 states have internal predecessors, (46), 2 states have call successors, (9), 8 states have call predecessors, (9), 5 states have return successors, (7), 5 states have call predecessors, (7), 1 states have call successors, (7) [2022-04-06 13:36:50,918 INFO L276 IsEmpty]: Start isEmpty. Operand 787 states and 1046 transitions. [2022-04-06 13:36:50,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-04-06 13:36:50,919 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:36:50,919 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 13:36:50,919 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-04-06 13:36:50,919 INFO L403 AbstractCegarLoop]: === Iteration 40 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:36:50,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:36:50,919 INFO L85 PathProgramCache]: Analyzing trace with hash -1508171679, now seen corresponding path program 1 times [2022-04-06 13:36:50,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:36:50,919 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156148724] [2022-04-06 13:36:50,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:36:50,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:36:50,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:50,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:36:50,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:51,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:36:51,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:51,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 13:36:51,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:51,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-06 13:36:51,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:51,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-06 13:36:51,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:51,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-06 13:36:51,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:51,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-04-06 13:36:51,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:51,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-06 13:36:51,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:51,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 13:36:51,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:36:51,215 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156148724] [2022-04-06 13:36:51,215 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1156148724] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:36:51,215 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 13:36:51,215 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-04-06 13:36:51,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882415771] [2022-04-06 13:36:51,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:36:51,216 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-04-06 13:36:51,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:36:51,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-04-06 13:36:51,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=359, Unknown=0, NotChecked=0, Total=420 [2022-04-06 13:36:51,216 INFO L87 Difference]: Start difference. First operand 787 states and 1046 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) [2022-04-06 13:36:53,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:36:53,192 INFO L93 Difference]: Finished difference Result 811 states and 1071 transitions. [2022-04-06 13:36:53,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-04-06 13:36:53,192 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 [2022-04-06 13:36:53,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:36:53,194 INFO L225 Difference]: With dead ends: 811 [2022-04-06 13:36:53,194 INFO L226 Difference]: Without dead ends: 787 [2022-04-06 13:36:53,195 INFO L912 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 [2022-04-06 13:36:53,195 INFO L913 BasicCegarLoop]: 513 mSDtfsCounter, 1250 mSDsluCounter, 1824 mSDsCounter, 0 mSdLazyCounter, 5141 mSolverCounterSat, 426 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1252 SdHoareTripleChecker+Valid, 2337 SdHoareTripleChecker+Invalid, 5567 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 426 IncrementalHoareTripleChecker+Valid, 5141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-04-06 13:36:53,195 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1252 Valid, 2337 Invalid, 5567 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [426 Valid, 5141 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-04-06 13:36:53,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 787 states. [2022-04-06 13:36:53,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 787 to 785. [2022-04-06 13:36:53,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 785 states, 619 states have (on average 1.308562197092084) internal successors, (810), 633 states have internal predecessors, (810), 95 states have call successors, (95), 51 states have call predecessors, (95), 70 states have return successors, (137), 107 states have call predecessors, (137), 89 states have call successors, (137) [2022-04-06 13:36:53,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 785 states to 785 states and 1042 transitions. [2022-04-06 13:36:53,254 INFO L78 Accepts]: Start accepts. Automaton has 785 states and 1042 transitions. Word has length 66 [2022-04-06 13:36:53,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:36:53,254 INFO L478 AbstractCegarLoop]: Abstraction has 785 states and 1042 transitions. [2022-04-06 13:36:53,254 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 2.4) internal successors, (48), 10 states have internal predecessors, (48), 4 states have call successors, (10), 10 states have call predecessors, (10), 4 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) [2022-04-06 13:36:53,255 INFO L276 IsEmpty]: Start isEmpty. Operand 785 states and 1042 transitions. [2022-04-06 13:36:53,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-04-06 13:36:53,256 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:36:53,256 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 13:36:53,256 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-04-06 13:36:53,256 INFO L403 AbstractCegarLoop]: === Iteration 41 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:36:53,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:36:53,256 INFO L85 PathProgramCache]: Analyzing trace with hash 136312337, now seen corresponding path program 1 times [2022-04-06 13:36:53,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:36:53,256 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320962726] [2022-04-06 13:36:53,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:36:53,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:36:53,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:53,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:36:53,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:53,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:36:53,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:53,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 13:36:53,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:53,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-06 13:36:53,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:53,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-06 13:36:53,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:53,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-04-06 13:36:53,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:53,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-06 13:36:53,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:53,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 13:36:53,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:36:53,505 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320962726] [2022-04-06 13:36:53,505 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [320962726] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:36:53,505 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 13:36:53,505 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-04-06 13:36:53,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000592616] [2022-04-06 13:36:53,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:36:53,506 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-04-06 13:36:53,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:36:53,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-04-06 13:36:53,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=327, Unknown=0, NotChecked=0, Total=380 [2022-04-06 13:36:53,508 INFO L87 Difference]: Start difference. First operand 785 states and 1042 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) [2022-04-06 13:36:55,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:36:55,548 INFO L93 Difference]: Finished difference Result 807 states and 1065 transitions. [2022-04-06 13:36:55,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-04-06 13:36:55,548 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 [2022-04-06 13:36:55,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:36:55,550 INFO L225 Difference]: With dead ends: 807 [2022-04-06 13:36:55,550 INFO L226 Difference]: Without dead ends: 783 [2022-04-06 13:36:55,551 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=99, Invalid=603, Unknown=0, NotChecked=0, Total=702 [2022-04-06 13:36:55,551 INFO L913 BasicCegarLoop]: 490 mSDtfsCounter, 909 mSDsluCounter, 1633 mSDsCounter, 0 mSdLazyCounter, 5234 mSolverCounterSat, 315 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 912 SdHoareTripleChecker+Valid, 2123 SdHoareTripleChecker+Invalid, 5549 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 315 IncrementalHoareTripleChecker+Valid, 5234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-04-06 13:36:55,551 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [912 Valid, 2123 Invalid, 5549 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [315 Valid, 5234 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-04-06 13:36:55,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 783 states. [2022-04-06 13:36:55,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 783 to 783. [2022-04-06 13:36:55,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 783 states, 618 states have (on average 1.307443365695793) internal successors, (808), 632 states have internal predecessors, (808), 94 states have call successors, (94), 51 states have call predecessors, (94), 70 states have return successors, (136), 106 states have call predecessors, (136), 88 states have call successors, (136) [2022-04-06 13:36:55,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 783 states to 783 states and 1038 transitions. [2022-04-06 13:36:55,611 INFO L78 Accepts]: Start accepts. Automaton has 783 states and 1038 transitions. Word has length 63 [2022-04-06 13:36:55,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:36:55,611 INFO L478 AbstractCegarLoop]: Abstraction has 783 states and 1038 transitions. [2022-04-06 13:36:55,611 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 2.473684210526316) internal successors, (47), 10 states have internal predecessors, (47), 4 states have call successors, (9), 9 states have call predecessors, (9), 4 states have return successors, (7), 5 states have call predecessors, (7), 3 states have call successors, (7) [2022-04-06 13:36:55,611 INFO L276 IsEmpty]: Start isEmpty. Operand 783 states and 1038 transitions. [2022-04-06 13:36:55,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-04-06 13:36:55,612 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:36:55,612 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 13:36:55,612 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2022-04-06 13:36:55,612 INFO L403 AbstractCegarLoop]: === Iteration 42 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:36:55,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:36:55,613 INFO L85 PathProgramCache]: Analyzing trace with hash 982595257, now seen corresponding path program 1 times [2022-04-06 13:36:55,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:36:55,613 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641471545] [2022-04-06 13:36:55,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:36:55,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:36:55,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:55,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:36:55,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:55,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:36:55,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:55,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 13:36:55,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:55,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-06 13:36:55,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:55,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-06 13:36:55,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:55,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-06 13:36:55,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:55,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-04-06 13:36:55,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:55,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 13:36:55,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:36:55,774 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641471545] [2022-04-06 13:36:55,774 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [641471545] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:36:55,774 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 13:36:55,774 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-04-06 13:36:55,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118477467] [2022-04-06 13:36:55,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:36:55,775 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-04-06 13:36:55,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:36:55,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-04-06 13:36:55,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-04-06 13:36:55,775 INFO L87 Difference]: Start difference. First operand 783 states and 1038 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) [2022-04-06 13:36:56,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:36:56,542 INFO L93 Difference]: Finished difference Result 1050 states and 1393 transitions. [2022-04-06 13:36:56,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-04-06 13:36:56,543 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 [2022-04-06 13:36:56,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:36:56,544 INFO L225 Difference]: With dead ends: 1050 [2022-04-06 13:36:56,544 INFO L226 Difference]: Without dead ends: 724 [2022-04-06 13:36:56,545 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=44, Invalid=66, Unknown=0, NotChecked=0, Total=110 [2022-04-06 13:36:56,546 INFO L913 BasicCegarLoop]: 483 mSDtfsCounter, 597 mSDsluCounter, 369 mSDsCounter, 0 mSdLazyCounter, 856 mSolverCounterSat, 198 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 599 SdHoareTripleChecker+Valid, 852 SdHoareTripleChecker+Invalid, 1054 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 198 IncrementalHoareTripleChecker+Valid, 856 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-04-06 13:36:56,546 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [599 Valid, 852 Invalid, 1054 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [198 Valid, 856 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-04-06 13:36:56,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 724 states. [2022-04-06 13:36:56,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 724 to 675. [2022-04-06 13:36:56,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 675 states, 533 states have (on average 1.2926829268292683) internal successors, (689), 547 states have internal predecessors, (689), 81 states have call successors, (81), 45 states have call predecessors, (81), 60 states have return successors, (100), 89 states have call predecessors, (100), 75 states have call successors, (100) [2022-04-06 13:36:56,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 675 states to 675 states and 870 transitions. [2022-04-06 13:36:56,599 INFO L78 Accepts]: Start accepts. Automaton has 675 states and 870 transitions. Word has length 63 [2022-04-06 13:36:56,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:36:56,600 INFO L478 AbstractCegarLoop]: Abstraction has 675 states and 870 transitions. [2022-04-06 13:36:56,600 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.7) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (9), 9 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-04-06 13:36:56,600 INFO L276 IsEmpty]: Start isEmpty. Operand 675 states and 870 transitions. [2022-04-06 13:36:56,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-04-06 13:36:56,601 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:36:56,601 INFO L499 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 13:36:56,601 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2022-04-06 13:36:56,601 INFO L403 AbstractCegarLoop]: === Iteration 43 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:36:56,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:36:56,601 INFO L85 PathProgramCache]: Analyzing trace with hash 274863522, now seen corresponding path program 1 times [2022-04-06 13:36:56,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:36:56,602 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [604975836] [2022-04-06 13:36:56,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:36:56,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:36:56,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:56,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:36:56,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:56,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:36:56,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:56,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 13:36:56,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:56,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-04-06 13:36:56,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:56,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-04-06 13:36:56,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:56,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-06 13:36:56,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:56,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 13:36:56,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:56,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-06 13:36:56,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:56,729 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 13:36:56,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:36:56,729 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [604975836] [2022-04-06 13:36:56,729 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [604975836] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 13:36:56,729 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [440635682] [2022-04-06 13:36:56,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:36:56,729 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 13:36:56,729 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 13:36:56,730 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 13:36:56,773 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-04-06 13:36:56,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:56,916 INFO L263 TraceCheckSpWp]: Trace formula consists of 852 conjuncts, 7 conjunts are in the unsatisfiable core [2022-04-06 13:36:56,919 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 13:36:56,989 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 13:36:56,989 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-06 13:36:56,989 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [440635682] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:36:56,989 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-06 13:36:56,989 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 10 [2022-04-06 13:36:56,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193504219] [2022-04-06 13:36:56,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:36:56,990 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-06 13:36:56,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:36:56,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-06 13:36:56,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2022-04-06 13:36:56,990 INFO L87 Difference]: Start difference. First operand 675 states and 870 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 3 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-04-06 13:36:57,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:36:57,050 INFO L93 Difference]: Finished difference Result 812 states and 1036 transitions. [2022-04-06 13:36:57,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-06 13:36:57,050 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 3 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 80 [2022-04-06 13:36:57,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:36:57,052 INFO L225 Difference]: With dead ends: 812 [2022-04-06 13:36:57,052 INFO L226 Difference]: Without dead ends: 729 [2022-04-06 13:36:57,052 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 90 SyntacticMatches, 3 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2022-04-06 13:36:57,059 INFO L913 BasicCegarLoop]: 593 mSDtfsCounter, 113 mSDsluCounter, 504 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 1097 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-06 13:36:57,059 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [113 Valid, 1097 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-06 13:36:57,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 729 states. [2022-04-06 13:36:57,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 729 to 706. [2022-04-06 13:36:57,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 706 states, 558 states have (on average 1.2939068100358424) internal successors, (722), 571 states have internal predecessors, (722), 83 states have call successors, (83), 48 states have call predecessors, (83), 64 states have return successors, (104), 93 states have call predecessors, (104), 78 states have call successors, (104) [2022-04-06 13:36:57,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 706 states to 706 states and 909 transitions. [2022-04-06 13:36:57,137 INFO L78 Accepts]: Start accepts. Automaton has 706 states and 909 transitions. Word has length 80 [2022-04-06 13:36:57,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:36:57,138 INFO L478 AbstractCegarLoop]: Abstraction has 706 states and 909 transitions. [2022-04-06 13:36:57,138 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 3 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-04-06 13:36:57,138 INFO L276 IsEmpty]: Start isEmpty. Operand 706 states and 909 transitions. [2022-04-06 13:36:57,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-04-06 13:36:57,139 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:36:57,139 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 13:36:57,159 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-04-06 13:36:57,357 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable42 [2022-04-06 13:36:57,357 INFO L403 AbstractCegarLoop]: === Iteration 44 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:36:57,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:36:57,358 INFO L85 PathProgramCache]: Analyzing trace with hash 1864492088, now seen corresponding path program 1 times [2022-04-06 13:36:57,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:36:57,358 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629379360] [2022-04-06 13:36:57,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:36:57,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:36:57,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:57,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:36:57,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:57,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:36:57,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:57,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 13:36:57,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:57,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-04-06 13:36:57,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:57,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 13:36:57,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:57,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-06 13:36:57,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:57,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-06 13:36:57,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:57,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 13:36:57,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:57,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 13:36:57,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:36:57,481 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629379360] [2022-04-06 13:36:57,481 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [629379360] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:36:57,481 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 13:36:57,481 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-04-06 13:36:57,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912115662] [2022-04-06 13:36:57,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:36:57,482 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-04-06 13:36:57,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:36:57,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-04-06 13:36:57,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-04-06 13:36:57,482 INFO L87 Difference]: Start difference. First operand 706 states and 909 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) [2022-04-06 13:36:58,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:36:58,278 INFO L93 Difference]: Finished difference Result 826 states and 1065 transitions. [2022-04-06 13:36:58,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-04-06 13:36:58,278 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 [2022-04-06 13:36:58,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:36:58,280 INFO L225 Difference]: With dead ends: 826 [2022-04-06 13:36:58,280 INFO L226 Difference]: Without dead ends: 706 [2022-04-06 13:36:58,280 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2022-04-06 13:36:58,281 INFO L913 BasicCegarLoop]: 459 mSDtfsCounter, 1152 mSDsluCounter, 427 mSDsCounter, 0 mSdLazyCounter, 883 mSolverCounterSat, 389 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1157 SdHoareTripleChecker+Valid, 886 SdHoareTripleChecker+Invalid, 1272 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 389 IncrementalHoareTripleChecker+Valid, 883 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-04-06 13:36:58,281 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1157 Valid, 886 Invalid, 1272 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [389 Valid, 883 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-04-06 13:36:58,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 706 states. [2022-04-06 13:36:58,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 706 to 706. [2022-04-06 13:36:58,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 706 states, 558 states have (on average 1.2885304659498207) internal successors, (719), 571 states have internal predecessors, (719), 83 states have call successors, (83), 48 states have call predecessors, (83), 64 states have return successors, (104), 93 states have call predecessors, (104), 78 states have call successors, (104) [2022-04-06 13:36:58,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 706 states to 706 states and 906 transitions. [2022-04-06 13:36:58,336 INFO L78 Accepts]: Start accepts. Automaton has 706 states and 906 transitions. Word has length 66 [2022-04-06 13:36:58,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:36:58,336 INFO L478 AbstractCegarLoop]: Abstraction has 706 states and 906 transitions. [2022-04-06 13:36:58,336 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (12), 8 states have call predecessors, (12), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2022-04-06 13:36:58,336 INFO L276 IsEmpty]: Start isEmpty. Operand 706 states and 906 transitions. [2022-04-06 13:36:58,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-04-06 13:36:58,337 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:36:58,337 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 13:36:58,337 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2022-04-06 13:36:58,337 INFO L403 AbstractCegarLoop]: === Iteration 45 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:36:58,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:36:58,338 INFO L85 PathProgramCache]: Analyzing trace with hash 531525074, now seen corresponding path program 1 times [2022-04-06 13:36:58,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:36:58,338 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85542559] [2022-04-06 13:36:58,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:36:58,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:36:58,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:58,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:36:58,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:58,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:36:58,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:58,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 13:36:58,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:58,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-06 13:36:58,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:58,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-06 13:36:58,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:58,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-06 13:36:58,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:58,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-06 13:36:58,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:58,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 13:36:58,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:36:58,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85542559] [2022-04-06 13:36:58,500 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [85542559] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:36:58,500 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 13:36:58,500 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-04-06 13:36:58,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141171512] [2022-04-06 13:36:58,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:36:58,501 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-04-06 13:36:58,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:36:58,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-04-06 13:36:58,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2022-04-06 13:36:58,501 INFO L87 Difference]: Start difference. First operand 706 states and 906 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) [2022-04-06 13:36:59,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:36:59,713 INFO L93 Difference]: Finished difference Result 770 states and 982 transitions. [2022-04-06 13:36:59,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-04-06 13:36:59,713 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 [2022-04-06 13:36:59,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:36:59,715 INFO L225 Difference]: With dead ends: 770 [2022-04-06 13:36:59,715 INFO L226 Difference]: Without dead ends: 737 [2022-04-06 13:36:59,715 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=138, Invalid=282, Unknown=0, NotChecked=0, Total=420 [2022-04-06 13:36:59,715 INFO L913 BasicCegarLoop]: 467 mSDtfsCounter, 1026 mSDsluCounter, 545 mSDsCounter, 0 mSdLazyCounter, 1225 mSolverCounterSat, 321 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1028 SdHoareTripleChecker+Valid, 1012 SdHoareTripleChecker+Invalid, 1546 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 321 IncrementalHoareTripleChecker+Valid, 1225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-04-06 13:36:59,716 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1028 Valid, 1012 Invalid, 1546 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [321 Valid, 1225 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-04-06 13:36:59,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 737 states. [2022-04-06 13:36:59,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 737 to 712. [2022-04-06 13:36:59,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 712 states, 563 states have (on average 1.2877442273534636) internal successors, (725), 576 states have internal predecessors, (725), 84 states have call successors, (84), 48 states have call predecessors, (84), 64 states have return successors, (105), 94 states have call predecessors, (105), 79 states have call successors, (105) [2022-04-06 13:36:59,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 712 states to 712 states and 914 transitions. [2022-04-06 13:36:59,773 INFO L78 Accepts]: Start accepts. Automaton has 712 states and 914 transitions. Word has length 65 [2022-04-06 13:36:59,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:36:59,773 INFO L478 AbstractCegarLoop]: Abstraction has 712 states and 914 transitions. [2022-04-06 13:36:59,773 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.083333333333333) internal successors, (49), 5 states have internal predecessors, (49), 3 states have call successors, (9), 9 states have call predecessors, (9), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-04-06 13:36:59,774 INFO L276 IsEmpty]: Start isEmpty. Operand 712 states and 914 transitions. [2022-04-06 13:36:59,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-04-06 13:36:59,775 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:36:59,775 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 13:36:59,775 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2022-04-06 13:36:59,775 INFO L403 AbstractCegarLoop]: === Iteration 46 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:36:59,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:36:59,776 INFO L85 PathProgramCache]: Analyzing trace with hash -925827221, now seen corresponding path program 1 times [2022-04-06 13:36:59,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:36:59,776 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83950331] [2022-04-06 13:36:59,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:36:59,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:36:59,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:59,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:36:59,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:59,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:36:59,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:59,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 13:36:59,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:59,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-06 13:36:59,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:59,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-06 13:36:59,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:59,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-04-06 13:36:59,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:59,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-04-06 13:36:59,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:59,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 13:36:59,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:36:59,931 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83950331] [2022-04-06 13:36:59,931 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [83950331] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:36:59,931 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 13:36:59,931 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-04-06 13:36:59,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283193730] [2022-04-06 13:36:59,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:36:59,932 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-04-06 13:36:59,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:36:59,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-04-06 13:36:59,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2022-04-06 13:36:59,932 INFO L87 Difference]: Start difference. First operand 712 states and 914 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) [2022-04-06 13:37:00,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:37:00,944 INFO L93 Difference]: Finished difference Result 768 states and 975 transitions. [2022-04-06 13:37:00,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-04-06 13:37:00,944 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 [2022-04-06 13:37:00,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:37:00,946 INFO L225 Difference]: With dead ends: 768 [2022-04-06 13:37:00,946 INFO L226 Difference]: Without dead ends: 714 [2022-04-06 13:37:00,946 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=76, Invalid=164, Unknown=0, NotChecked=0, Total=240 [2022-04-06 13:37:00,947 INFO L913 BasicCegarLoop]: 473 mSDtfsCounter, 873 mSDsluCounter, 538 mSDsCounter, 0 mSdLazyCounter, 1551 mSolverCounterSat, 292 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 875 SdHoareTripleChecker+Valid, 1011 SdHoareTripleChecker+Invalid, 1843 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 292 IncrementalHoareTripleChecker+Valid, 1551 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-04-06 13:37:00,947 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [875 Valid, 1011 Invalid, 1843 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [292 Valid, 1551 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-04-06 13:37:00,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 714 states. [2022-04-06 13:37:01,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 714 to 712. [2022-04-06 13:37:01,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 712 states, 563 states have (on average 1.2841918294849024) internal successors, (723), 576 states have internal predecessors, (723), 84 states have call successors, (84), 48 states have call predecessors, (84), 64 states have return successors, (105), 94 states have call predecessors, (105), 79 states have call successors, (105) [2022-04-06 13:37:01,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 712 states to 712 states and 912 transitions. [2022-04-06 13:37:01,016 INFO L78 Accepts]: Start accepts. Automaton has 712 states and 912 transitions. Word has length 66 [2022-04-06 13:37:01,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:37:01,016 INFO L478 AbstractCegarLoop]: Abstraction has 712 states and 912 transitions. [2022-04-06 13:37:01,016 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.166666666666667) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-04-06 13:37:01,016 INFO L276 IsEmpty]: Start isEmpty. Operand 712 states and 912 transitions. [2022-04-06 13:37:01,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-04-06 13:37:01,017 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:37:01,017 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 13:37:01,017 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2022-04-06 13:37:01,018 INFO L403 AbstractCegarLoop]: === Iteration 47 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:37:01,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:37:01,018 INFO L85 PathProgramCache]: Analyzing trace with hash -575027284, now seen corresponding path program 1 times [2022-04-06 13:37:01,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:37:01,018 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799784726] [2022-04-06 13:37:01,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:37:01,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:37:01,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:01,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:37:01,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:01,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:37:01,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:01,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 13:37:01,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:01,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-06 13:37:01,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:01,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-06 13:37:01,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:01,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-04-06 13:37:01,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:01,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-04-06 13:37:01,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:01,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 13:37:01,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:37:01,202 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799784726] [2022-04-06 13:37:01,202 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1799784726] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:37:01,202 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 13:37:01,202 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-04-06 13:37:01,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275519495] [2022-04-06 13:37:01,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:37:01,202 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-04-06 13:37:01,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:37:01,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-04-06 13:37:01,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2022-04-06 13:37:01,203 INFO L87 Difference]: Start difference. First operand 712 states and 912 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) [2022-04-06 13:37:02,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:37:02,770 INFO L93 Difference]: Finished difference Result 739 states and 942 transitions. [2022-04-06 13:37:02,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-04-06 13:37:02,770 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 [2022-04-06 13:37:02,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:37:02,775 INFO L225 Difference]: With dead ends: 739 [2022-04-06 13:37:02,775 INFO L226 Difference]: Without dead ends: 681 [2022-04-06 13:37:02,776 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2022-04-06 13:37:02,776 INFO L913 BasicCegarLoop]: 476 mSDtfsCounter, 614 mSDsluCounter, 1300 mSDsCounter, 0 mSdLazyCounter, 3598 mSolverCounterSat, 215 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 617 SdHoareTripleChecker+Valid, 1776 SdHoareTripleChecker+Invalid, 3813 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 215 IncrementalHoareTripleChecker+Valid, 3598 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-04-06 13:37:02,776 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [617 Valid, 1776 Invalid, 3813 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [215 Valid, 3598 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-04-06 13:37:02,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 681 states. [2022-04-06 13:37:02,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 681 to 675. [2022-04-06 13:37:02,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 675 states, 533 states have (on average 1.2701688555347093) internal successors, (677), 546 states have internal predecessors, (677), 77 states have call successors, (77), 48 states have call predecessors, (77), 64 states have return successors, (97), 87 states have call predecessors, (97), 72 states have call successors, (97) [2022-04-06 13:37:02,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 675 states to 675 states and 851 transitions. [2022-04-06 13:37:02,830 INFO L78 Accepts]: Start accepts. Automaton has 675 states and 851 transitions. Word has length 66 [2022-04-06 13:37:02,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:37:02,830 INFO L478 AbstractCegarLoop]: Abstraction has 675 states and 851 transitions. [2022-04-06 13:37:02,830 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.125) internal successors, (50), 7 states have internal predecessors, (50), 3 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 4 states have call predecessors, (7), 2 states have call successors, (7) [2022-04-06 13:37:02,830 INFO L276 IsEmpty]: Start isEmpty. Operand 675 states and 851 transitions. [2022-04-06 13:37:02,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-04-06 13:37:02,831 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:37:02,831 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 13:37:02,831 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2022-04-06 13:37:02,831 INFO L403 AbstractCegarLoop]: === Iteration 48 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:37:02,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:37:02,831 INFO L85 PathProgramCache]: Analyzing trace with hash -329926322, now seen corresponding path program 1 times [2022-04-06 13:37:02,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:37:02,832 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968240035] [2022-04-06 13:37:02,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:37:02,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:37:02,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:02,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:37:02,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:02,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:37:02,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:02,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 13:37:02,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:02,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-06 13:37:02,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:02,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-06 13:37:02,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:02,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-04-06 13:37:02,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:02,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-06 13:37:02,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:02,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 13:37:02,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:37:02,982 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968240035] [2022-04-06 13:37:02,982 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1968240035] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:37:02,982 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 13:37:02,982 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-04-06 13:37:02,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307087923] [2022-04-06 13:37:02,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:37:02,982 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-04-06 13:37:02,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:37:02,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-04-06 13:37:02,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2022-04-06 13:37:02,983 INFO L87 Difference]: Start difference. First operand 675 states and 851 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) [2022-04-06 13:37:03,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:37:03,745 INFO L93 Difference]: Finished difference Result 709 states and 886 transitions. [2022-04-06 13:37:03,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-04-06 13:37:03,745 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 [2022-04-06 13:37:03,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:37:03,747 INFO L225 Difference]: With dead ends: 709 [2022-04-06 13:37:03,747 INFO L226 Difference]: Without dead ends: 670 [2022-04-06 13:37:03,748 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2022-04-06 13:37:03,748 INFO L913 BasicCegarLoop]: 423 mSDtfsCounter, 529 mSDsluCounter, 527 mSDsCounter, 0 mSdLazyCounter, 1376 mSolverCounterSat, 182 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 531 SdHoareTripleChecker+Valid, 950 SdHoareTripleChecker+Invalid, 1558 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 182 IncrementalHoareTripleChecker+Valid, 1376 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-04-06 13:37:03,748 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [531 Valid, 950 Invalid, 1558 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [182 Valid, 1376 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-04-06 13:37:03,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 670 states. [2022-04-06 13:37:03,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 670 to 670. [2022-04-06 13:37:03,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 670 states, 529 states have (on average 1.270321361058601) internal successors, (672), 542 states have internal predecessors, (672), 76 states have call successors, (76), 48 states have call predecessors, (76), 64 states have return successors, (96), 86 states have call predecessors, (96), 71 states have call successors, (96) [2022-04-06 13:37:03,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 670 states to 670 states and 844 transitions. [2022-04-06 13:37:03,800 INFO L78 Accepts]: Start accepts. Automaton has 670 states and 844 transitions. Word has length 67 [2022-04-06 13:37:03,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:37:03,800 INFO L478 AbstractCegarLoop]: Abstraction has 670 states and 844 transitions. [2022-04-06 13:37:03,800 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.25) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-04-06 13:37:03,801 INFO L276 IsEmpty]: Start isEmpty. Operand 670 states and 844 transitions. [2022-04-06 13:37:03,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-04-06 13:37:03,812 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:37:03,812 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 13:37:03,812 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2022-04-06 13:37:03,812 INFO L403 AbstractCegarLoop]: === Iteration 49 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:37:03,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:37:03,815 INFO L85 PathProgramCache]: Analyzing trace with hash 872575031, now seen corresponding path program 1 times [2022-04-06 13:37:03,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:37:03,815 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274877913] [2022-04-06 13:37:03,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:37:03,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:37:03,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:03,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:37:03,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:03,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:37:03,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:03,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 13:37:03,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:03,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-06 13:37:03,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:03,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-04-06 13:37:03,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:03,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-04-06 13:37:03,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:03,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-06 13:37:03,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:03,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 13:37:03,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:37:03,966 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274877913] [2022-04-06 13:37:03,966 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [274877913] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:37:03,966 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 13:37:03,966 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-04-06 13:37:03,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426666211] [2022-04-06 13:37:03,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:37:03,967 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-04-06 13:37:03,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:37:03,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-04-06 13:37:03,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-04-06 13:37:03,968 INFO L87 Difference]: Start difference. First operand 670 states and 844 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) [2022-04-06 13:37:04,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:37:04,599 INFO L93 Difference]: Finished difference Result 777 states and 975 transitions. [2022-04-06 13:37:04,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-04-06 13:37:04,600 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 [2022-04-06 13:37:04,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:37:04,601 INFO L225 Difference]: With dead ends: 777 [2022-04-06 13:37:04,601 INFO L226 Difference]: Without dead ends: 769 [2022-04-06 13:37:04,602 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 10 SyntacticMatches, 3 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=98, Unknown=0, NotChecked=0, Total=156 [2022-04-06 13:37:04,603 INFO L913 BasicCegarLoop]: 403 mSDtfsCounter, 1204 mSDsluCounter, 333 mSDsCounter, 0 mSdLazyCounter, 725 mSolverCounterSat, 420 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1213 SdHoareTripleChecker+Valid, 736 SdHoareTripleChecker+Invalid, 1145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 420 IncrementalHoareTripleChecker+Valid, 725 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-04-06 13:37:04,604 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1213 Valid, 736 Invalid, 1145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [420 Valid, 725 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-04-06 13:37:04,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 769 states. [2022-04-06 13:37:04,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 769 to 712. [2022-04-06 13:37:04,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 712 states, 561 states have (on average 1.2638146167557933) internal successors, (709), 576 states have internal predecessors, (709), 78 states have call successors, (78), 50 states have call predecessors, (78), 72 states have return successors, (104), 94 states have call predecessors, (104), 73 states have call successors, (104) [2022-04-06 13:37:04,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 712 states to 712 states and 891 transitions. [2022-04-06 13:37:04,661 INFO L78 Accepts]: Start accepts. Automaton has 712 states and 891 transitions. Word has length 67 [2022-04-06 13:37:04,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:37:04,661 INFO L478 AbstractCegarLoop]: Abstraction has 712 states and 891 transitions. [2022-04-06 13:37:04,661 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.1) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (9), 9 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2022-04-06 13:37:04,661 INFO L276 IsEmpty]: Start isEmpty. Operand 712 states and 891 transitions. [2022-04-06 13:37:04,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-04-06 13:37:04,662 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:37:04,662 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 13:37:04,662 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2022-04-06 13:37:04,662 INFO L403 AbstractCegarLoop]: === Iteration 50 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:37:04,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:37:04,663 INFO L85 PathProgramCache]: Analyzing trace with hash 1310592370, now seen corresponding path program 1 times [2022-04-06 13:37:04,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:37:04,663 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022513541] [2022-04-06 13:37:04,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:37:04,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:37:04,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:04,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:37:04,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:04,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:37:04,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:04,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 13:37:04,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:04,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-06 13:37:04,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:04,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-04-06 13:37:04,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:04,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-04-06 13:37:04,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:04,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-06 13:37:04,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:04,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 13:37:04,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:37:04,820 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022513541] [2022-04-06 13:37:04,820 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1022513541] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:37:04,820 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 13:37:04,820 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-04-06 13:37:04,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301249083] [2022-04-06 13:37:04,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:37:04,821 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-04-06 13:37:04,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:37:04,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-04-06 13:37:04,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2022-04-06 13:37:04,821 INFO L87 Difference]: Start difference. First operand 712 states and 891 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) [2022-04-06 13:37:06,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:37:06,077 INFO L93 Difference]: Finished difference Result 773 states and 969 transitions. [2022-04-06 13:37:06,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-04-06 13:37:06,078 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 [2022-04-06 13:37:06,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:37:06,079 INFO L225 Difference]: With dead ends: 773 [2022-04-06 13:37:06,079 INFO L226 Difference]: Without dead ends: 767 [2022-04-06 13:37:06,080 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=113, Invalid=267, Unknown=0, NotChecked=0, Total=380 [2022-04-06 13:37:06,080 INFO L913 BasicCegarLoop]: 405 mSDtfsCounter, 1520 mSDsluCounter, 376 mSDsCounter, 0 mSdLazyCounter, 1389 mSolverCounterSat, 501 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1527 SdHoareTripleChecker+Valid, 781 SdHoareTripleChecker+Invalid, 1890 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 501 IncrementalHoareTripleChecker+Valid, 1389 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-04-06 13:37:06,080 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1527 Valid, 781 Invalid, 1890 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [501 Valid, 1389 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-04-06 13:37:06,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 767 states. [2022-04-06 13:37:06,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 767 to 712. [2022-04-06 13:37:06,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 712 states, 561 states have (on average 1.2620320855614973) internal successors, (708), 576 states have internal predecessors, (708), 78 states have call successors, (78), 50 states have call predecessors, (78), 72 states have return successors, (104), 94 states have call predecessors, (104), 73 states have call successors, (104) [2022-04-06 13:37:06,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 712 states to 712 states and 890 transitions. [2022-04-06 13:37:06,140 INFO L78 Accepts]: Start accepts. Automaton has 712 states and 890 transitions. Word has length 68 [2022-04-06 13:37:06,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:37:06,141 INFO L478 AbstractCegarLoop]: Abstraction has 712 states and 890 transitions. [2022-04-06 13:37:06,141 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.333333333333333) internal successors, (52), 5 states have internal predecessors, (52), 3 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 4 states have call predecessors, (7), 2 states have call successors, (7) [2022-04-06 13:37:06,141 INFO L276 IsEmpty]: Start isEmpty. Operand 712 states and 890 transitions. [2022-04-06 13:37:06,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-04-06 13:37:06,142 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:37:06,142 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 13:37:06,142 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2022-04-06 13:37:06,142 INFO L403 AbstractCegarLoop]: === Iteration 51 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:37:06,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:37:06,142 INFO L85 PathProgramCache]: Analyzing trace with hash 1966008401, now seen corresponding path program 1 times [2022-04-06 13:37:06,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:37:06,142 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056980889] [2022-04-06 13:37:06,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:37:06,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:37:06,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:06,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:37:06,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:06,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:37:06,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:06,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 13:37:06,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:06,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-06 13:37:06,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:06,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-06 13:37:06,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:06,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-04-06 13:37:06,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:06,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-04-06 13:37:06,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:06,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-06 13:37:06,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:06,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 13:37:06,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:37:06,491 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056980889] [2022-04-06 13:37:06,491 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1056980889] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:37:06,491 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 13:37:06,491 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2022-04-06 13:37:06,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236134118] [2022-04-06 13:37:06,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:37:06,491 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-04-06 13:37:06,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:37:06,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-04-06 13:37:06,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=441, Unknown=0, NotChecked=0, Total=506 [2022-04-06 13:37:06,492 INFO L87 Difference]: Start difference. First operand 712 states and 890 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) [2022-04-06 13:37:08,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:37:08,531 INFO L93 Difference]: Finished difference Result 736 states and 916 transitions. [2022-04-06 13:37:08,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-04-06 13:37:08,532 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 [2022-04-06 13:37:08,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:37:08,533 INFO L225 Difference]: With dead ends: 736 [2022-04-06 13:37:08,533 INFO L226 Difference]: Without dead ends: 709 [2022-04-06 13:37:08,534 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=148, Invalid=908, Unknown=0, NotChecked=0, Total=1056 [2022-04-06 13:37:08,535 INFO L913 BasicCegarLoop]: 428 mSDtfsCounter, 1446 mSDsluCounter, 2102 mSDsCounter, 0 mSdLazyCounter, 4951 mSolverCounterSat, 512 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1448 SdHoareTripleChecker+Valid, 2530 SdHoareTripleChecker+Invalid, 5463 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 512 IncrementalHoareTripleChecker+Valid, 4951 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-04-06 13:37:08,535 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1448 Valid, 2530 Invalid, 5463 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [512 Valid, 4951 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-04-06 13:37:08,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 709 states. [2022-04-06 13:37:08,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 709 to 709. [2022-04-06 13:37:08,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 709 states, 559 states have (on average 1.2611806797853309) internal successors, (705), 574 states have internal predecessors, (705), 77 states have call successors, (77), 50 states have call predecessors, (77), 72 states have return successors, (103), 93 states have call predecessors, (103), 72 states have call successors, (103) [2022-04-06 13:37:08,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 709 states to 709 states and 885 transitions. [2022-04-06 13:37:08,630 INFO L78 Accepts]: Start accepts. Automaton has 709 states and 885 transitions. Word has length 70 [2022-04-06 13:37:08,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:37:08,630 INFO L478 AbstractCegarLoop]: Abstraction has 709 states and 885 transitions. [2022-04-06 13:37:08,631 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 2.3636363636363638) internal successors, (52), 11 states have internal predecessors, (52), 4 states have call successors, (10), 10 states have call predecessors, (10), 5 states have return successors, (8), 6 states have call predecessors, (8), 3 states have call successors, (8) [2022-04-06 13:37:08,631 INFO L276 IsEmpty]: Start isEmpty. Operand 709 states and 885 transitions. [2022-04-06 13:37:08,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-04-06 13:37:08,632 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:37:08,632 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 13:37:08,632 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2022-04-06 13:37:08,632 INFO L403 AbstractCegarLoop]: === Iteration 52 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:37:08,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:37:08,632 INFO L85 PathProgramCache]: Analyzing trace with hash -771243238, now seen corresponding path program 1 times [2022-04-06 13:37:08,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:37:08,632 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435636401] [2022-04-06 13:37:08,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:37:08,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:37:08,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:08,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:37:08,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:08,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:37:08,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:08,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 13:37:08,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:08,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-06 13:37:08,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:08,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-06 13:37:08,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:08,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-04-06 13:37:08,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:08,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-06 13:37:08,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:08,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 13:37:08,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:37:08,896 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435636401] [2022-04-06 13:37:08,896 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1435636401] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:37:08,896 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 13:37:08,897 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-04-06 13:37:08,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490768786] [2022-04-06 13:37:08,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:37:08,897 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-04-06 13:37:08,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:37:08,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-04-06 13:37:08,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=296, Unknown=0, NotChecked=0, Total=342 [2022-04-06 13:37:08,898 INFO L87 Difference]: Start difference. First operand 709 states and 885 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) [2022-04-06 13:37:10,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:37:10,408 INFO L93 Difference]: Finished difference Result 729 states and 906 transitions. [2022-04-06 13:37:10,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-04-06 13:37:10,408 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 [2022-04-06 13:37:10,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:37:10,410 INFO L225 Difference]: With dead ends: 729 [2022-04-06 13:37:10,410 INFO L226 Difference]: Without dead ends: 707 [2022-04-06 13:37:10,410 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=54, Invalid=366, Unknown=0, NotChecked=0, Total=420 [2022-04-06 13:37:10,415 INFO L913 BasicCegarLoop]: 424 mSDtfsCounter, 239 mSDsluCounter, 1606 mSDsCounter, 0 mSdLazyCounter, 4495 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 241 SdHoareTripleChecker+Valid, 2030 SdHoareTripleChecker+Invalid, 4582 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 4495 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-04-06 13:37:10,415 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [241 Valid, 2030 Invalid, 4582 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 4495 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-04-06 13:37:10,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 707 states. [2022-04-06 13:37:10,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 707 to 707. [2022-04-06 13:37:10,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 707 states, 558 states have (on average 1.2598566308243728) internal successors, (703), 573 states have internal predecessors, (703), 76 states have call successors, (76), 50 states have call predecessors, (76), 72 states have return successors, (102), 92 states have call predecessors, (102), 71 states have call successors, (102) [2022-04-06 13:37:10,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 707 states to 707 states and 881 transitions. [2022-04-06 13:37:10,473 INFO L78 Accepts]: Start accepts. Automaton has 707 states and 881 transitions. Word has length 72 [2022-04-06 13:37:10,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:37:10,474 INFO L478 AbstractCegarLoop]: Abstraction has 707 states and 881 transitions. [2022-04-06 13:37:10,474 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.9473684210526314) internal successors, (56), 9 states have internal predecessors, (56), 2 states have call successors, (9), 8 states have call predecessors, (9), 5 states have return successors, (7), 5 states have call predecessors, (7), 1 states have call successors, (7) [2022-04-06 13:37:10,474 INFO L276 IsEmpty]: Start isEmpty. Operand 707 states and 881 transitions. [2022-04-06 13:37:10,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-04-06 13:37:10,475 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:37:10,475 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 13:37:10,475 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2022-04-06 13:37:10,475 INFO L403 AbstractCegarLoop]: === Iteration 53 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:37:10,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:37:10,475 INFO L85 PathProgramCache]: Analyzing trace with hash 667549759, now seen corresponding path program 1 times [2022-04-06 13:37:10,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:37:10,475 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332105395] [2022-04-06 13:37:10,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:37:10,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:37:10,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:10,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:37:10,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:10,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:37:10,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:10,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 13:37:10,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:10,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-06 13:37:10,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:10,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-06 13:37:10,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:10,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-04-06 13:37:10,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:10,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-06 13:37:10,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:10,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 13:37:10,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:37:10,739 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332105395] [2022-04-06 13:37:10,739 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1332105395] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:37:10,739 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 13:37:10,739 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-04-06 13:37:10,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5611334] [2022-04-06 13:37:10,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:37:10,739 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-04-06 13:37:10,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:37:10,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-04-06 13:37:10,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=296, Unknown=0, NotChecked=0, Total=342 [2022-04-06 13:37:10,740 INFO L87 Difference]: Start difference. First operand 707 states and 881 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) [2022-04-06 13:37:12,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:37:12,244 INFO L93 Difference]: Finished difference Result 724 states and 899 transitions. [2022-04-06 13:37:12,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-04-06 13:37:12,245 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 [2022-04-06 13:37:12,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:37:12,246 INFO L225 Difference]: With dead ends: 724 [2022-04-06 13:37:12,246 INFO L226 Difference]: Without dead ends: 695 [2022-04-06 13:37:12,246 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=54, Invalid=366, Unknown=0, NotChecked=0, Total=420 [2022-04-06 13:37:12,247 INFO L913 BasicCegarLoop]: 417 mSDtfsCounter, 467 mSDsluCounter, 1518 mSDsCounter, 0 mSdLazyCounter, 3925 mSolverCounterSat, 162 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 469 SdHoareTripleChecker+Valid, 1935 SdHoareTripleChecker+Invalid, 4087 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 162 IncrementalHoareTripleChecker+Valid, 3925 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-04-06 13:37:12,247 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [469 Valid, 1935 Invalid, 4087 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [162 Valid, 3925 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-04-06 13:37:12,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 695 states. [2022-04-06 13:37:12,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 695 to 695. [2022-04-06 13:37:12,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 695 states, 549 states have (on average 1.2604735883424407) internal successors, (692), 564 states have internal predecessors, (692), 74 states have call successors, (74), 50 states have call predecessors, (74), 71 states have return successors, (99), 89 states have call predecessors, (99), 69 states have call successors, (99) [2022-04-06 13:37:12,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 695 states to 695 states and 865 transitions. [2022-04-06 13:37:12,304 INFO L78 Accepts]: Start accepts. Automaton has 695 states and 865 transitions. Word has length 69 [2022-04-06 13:37:12,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:37:12,304 INFO L478 AbstractCegarLoop]: Abstraction has 695 states and 865 transitions. [2022-04-06 13:37:12,304 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.789473684210526) internal successors, (53), 9 states have internal predecessors, (53), 2 states have call successors, (9), 8 states have call predecessors, (9), 5 states have return successors, (7), 5 states have call predecessors, (7), 1 states have call successors, (7) [2022-04-06 13:37:12,304 INFO L276 IsEmpty]: Start isEmpty. Operand 695 states and 865 transitions. [2022-04-06 13:37:12,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-04-06 13:37:12,305 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:37:12,305 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 13:37:12,305 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2022-04-06 13:37:12,305 INFO L403 AbstractCegarLoop]: === Iteration 54 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:37:12,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:37:12,306 INFO L85 PathProgramCache]: Analyzing trace with hash -914202014, now seen corresponding path program 1 times [2022-04-06 13:37:12,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:37:12,306 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14365828] [2022-04-06 13:37:12,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:37:12,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:37:12,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:12,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:37:12,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:12,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:37:12,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:12,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 13:37:12,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:12,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-06 13:37:12,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:12,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-06 13:37:12,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:12,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-04-06 13:37:12,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:12,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-04-06 13:37:12,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:12,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 13:37:12,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:37:12,466 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14365828] [2022-04-06 13:37:12,466 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [14365828] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:37:12,466 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 13:37:12,466 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-04-06 13:37:12,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692310606] [2022-04-06 13:37:12,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:37:12,466 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-04-06 13:37:12,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:37:12,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-04-06 13:37:12,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2022-04-06 13:37:12,467 INFO L87 Difference]: Start difference. First operand 695 states and 865 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) [2022-04-06 13:37:13,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:37:13,267 INFO L93 Difference]: Finished difference Result 729 states and 900 transitions. [2022-04-06 13:37:13,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-04-06 13:37:13,267 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 [2022-04-06 13:37:13,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:37:13,283 INFO L225 Difference]: With dead ends: 729 [2022-04-06 13:37:13,284 INFO L226 Difference]: Without dead ends: 690 [2022-04-06 13:37:13,284 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2022-04-06 13:37:13,284 INFO L913 BasicCegarLoop]: 398 mSDtfsCounter, 495 mSDsluCounter, 522 mSDsCounter, 0 mSdLazyCounter, 1279 mSolverCounterSat, 167 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 497 SdHoareTripleChecker+Valid, 920 SdHoareTripleChecker+Invalid, 1446 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 167 IncrementalHoareTripleChecker+Valid, 1279 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-04-06 13:37:13,284 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [497 Valid, 920 Invalid, 1446 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [167 Valid, 1279 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-04-06 13:37:13,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 690 states. [2022-04-06 13:37:13,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 690 to 690. [2022-04-06 13:37:13,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 690 states, 545 states have (on average 1.2605504587155962) internal successors, (687), 560 states have internal predecessors, (687), 73 states have call successors, (73), 50 states have call predecessors, (73), 71 states have return successors, (98), 88 states have call predecessors, (98), 68 states have call successors, (98) [2022-04-06 13:37:13,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 690 states to 690 states and 858 transitions. [2022-04-06 13:37:13,344 INFO L78 Accepts]: Start accepts. Automaton has 690 states and 858 transitions. Word has length 69 [2022-04-06 13:37:13,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:37:13,344 INFO L478 AbstractCegarLoop]: Abstraction has 690 states and 858 transitions. [2022-04-06 13:37:13,344 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.416666666666667) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-04-06 13:37:13,345 INFO L276 IsEmpty]: Start isEmpty. Operand 690 states and 858 transitions. [2022-04-06 13:37:13,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-04-06 13:37:13,345 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:37:13,346 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 13:37:13,346 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2022-04-06 13:37:13,346 INFO L403 AbstractCegarLoop]: === Iteration 55 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:37:13,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:37:13,346 INFO L85 PathProgramCache]: Analyzing trace with hash -761466943, now seen corresponding path program 1 times [2022-04-06 13:37:13,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:37:13,346 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977795369] [2022-04-06 13:37:13,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:37:13,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:37:13,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:13,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:37:13,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:13,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:37:13,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:13,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 13:37:13,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:13,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-06 13:37:13,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:13,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-06 13:37:13,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:13,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-06 13:37:13,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:13,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-04-06 13:37:13,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:13,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 13:37:13,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:37:13,538 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977795369] [2022-04-06 13:37:13,538 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [977795369] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:37:13,538 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 13:37:13,538 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-04-06 13:37:13,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759600110] [2022-04-06 13:37:13,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:37:13,538 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-04-06 13:37:13,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:37:13,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-04-06 13:37:13,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=256, Unknown=0, NotChecked=0, Total=306 [2022-04-06 13:37:13,539 INFO L87 Difference]: Start difference. First operand 690 states and 858 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) [2022-04-06 13:37:15,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:37:15,016 INFO L93 Difference]: Finished difference Result 717 states and 888 transitions. [2022-04-06 13:37:15,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-04-06 13:37:15,016 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 [2022-04-06 13:37:15,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:37:15,017 INFO L225 Difference]: With dead ends: 717 [2022-04-06 13:37:15,017 INFO L226 Difference]: Without dead ends: 687 [2022-04-06 13:37:15,018 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=96, Invalid=456, Unknown=0, NotChecked=0, Total=552 [2022-04-06 13:37:15,018 INFO L913 BasicCegarLoop]: 413 mSDtfsCounter, 702 mSDsluCounter, 1464 mSDsCounter, 0 mSdLazyCounter, 3393 mSolverCounterSat, 232 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 705 SdHoareTripleChecker+Valid, 1877 SdHoareTripleChecker+Invalid, 3625 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 232 IncrementalHoareTripleChecker+Valid, 3393 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-04-06 13:37:15,018 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [705 Valid, 1877 Invalid, 3625 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [232 Valid, 3393 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-04-06 13:37:15,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 687 states. [2022-04-06 13:37:15,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 687 to 687. [2022-04-06 13:37:15,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 687 states, 543 states have (on average 1.2596685082872927) internal successors, (684), 558 states have internal predecessors, (684), 72 states have call successors, (72), 50 states have call predecessors, (72), 71 states have return successors, (97), 87 states have call predecessors, (97), 67 states have call successors, (97) [2022-04-06 13:37:15,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 687 states to 687 states and 853 transitions. [2022-04-06 13:37:15,074 INFO L78 Accepts]: Start accepts. Automaton has 687 states and 853 transitions. Word has length 69 [2022-04-06 13:37:15,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:37:15,074 INFO L478 AbstractCegarLoop]: Abstraction has 687 states and 853 transitions. [2022-04-06 13:37:15,074 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.9444444444444446) internal successors, (53), 8 states have internal predecessors, (53), 3 states have call successors, (9), 9 states have call predecessors, (9), 4 states have return successors, (7), 5 states have call predecessors, (7), 2 states have call successors, (7) [2022-04-06 13:37:15,074 INFO L276 IsEmpty]: Start isEmpty. Operand 687 states and 853 transitions. [2022-04-06 13:37:15,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-04-06 13:37:15,075 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:37:15,075 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 13:37:15,075 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2022-04-06 13:37:15,075 INFO L403 AbstractCegarLoop]: === Iteration 56 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:37:15,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:37:15,075 INFO L85 PathProgramCache]: Analyzing trace with hash 1045116325, now seen corresponding path program 1 times [2022-04-06 13:37:15,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:37:15,075 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890335227] [2022-04-06 13:37:15,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:37:15,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:37:15,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:15,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:37:15,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:15,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:37:15,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:15,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 13:37:15,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:15,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-06 13:37:15,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:15,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-04-06 13:37:15,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:15,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-04-06 13:37:15,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:15,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-06 13:37:15,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:15,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 13:37:15,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:37:15,252 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890335227] [2022-04-06 13:37:15,252 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [890335227] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:37:15,252 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 13:37:15,252 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-04-06 13:37:15,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906532845] [2022-04-06 13:37:15,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:37:15,253 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-04-06 13:37:15,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:37:15,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-04-06 13:37:15,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2022-04-06 13:37:15,253 INFO L87 Difference]: Start difference. First operand 687 states and 853 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) [2022-04-06 13:37:16,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:37:16,236 INFO L93 Difference]: Finished difference Result 746 states and 928 transitions. [2022-04-06 13:37:16,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-04-06 13:37:16,237 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 [2022-04-06 13:37:16,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:37:16,238 INFO L225 Difference]: With dead ends: 746 [2022-04-06 13:37:16,238 INFO L226 Difference]: Without dead ends: 742 [2022-04-06 13:37:16,239 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=137, Invalid=325, Unknown=0, NotChecked=0, Total=462 [2022-04-06 13:37:16,239 INFO L913 BasicCegarLoop]: 370 mSDtfsCounter, 1443 mSDsluCounter, 348 mSDsCounter, 0 mSdLazyCounter, 977 mSolverCounterSat, 462 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1450 SdHoareTripleChecker+Valid, 718 SdHoareTripleChecker+Invalid, 1439 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 462 IncrementalHoareTripleChecker+Valid, 977 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-04-06 13:37:16,239 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1450 Valid, 718 Invalid, 1439 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [462 Valid, 977 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-04-06 13:37:16,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 742 states. [2022-04-06 13:37:16,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 742 to 685. [2022-04-06 13:37:16,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 685 states, 541 states have (on average 1.2587800369685767) internal successors, (681), 556 states have internal predecessors, (681), 72 states have call successors, (72), 50 states have call predecessors, (72), 71 states have return successors, (97), 87 states have call predecessors, (97), 67 states have call successors, (97) [2022-04-06 13:37:16,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 685 states to 685 states and 850 transitions. [2022-04-06 13:37:16,296 INFO L78 Accepts]: Start accepts. Automaton has 685 states and 850 transitions. Word has length 69 [2022-04-06 13:37:16,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:37:16,296 INFO L478 AbstractCegarLoop]: Abstraction has 685 states and 850 transitions. [2022-04-06 13:37:16,296 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.416666666666667) internal successors, (53), 5 states have internal predecessors, (53), 3 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 4 states have call predecessors, (7), 2 states have call successors, (7) [2022-04-06 13:37:16,296 INFO L276 IsEmpty]: Start isEmpty. Operand 685 states and 850 transitions. [2022-04-06 13:37:16,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-04-06 13:37:16,297 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:37:16,297 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 13:37:16,297 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2022-04-06 13:37:16,297 INFO L403 AbstractCegarLoop]: === Iteration 57 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:37:16,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:37:16,297 INFO L85 PathProgramCache]: Analyzing trace with hash 1045148069, now seen corresponding path program 1 times [2022-04-06 13:37:16,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:37:16,297 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019170822] [2022-04-06 13:37:16,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:37:16,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:37:16,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:16,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:37:16,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:16,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:37:16,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:16,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 13:37:16,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:16,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-06 13:37:16,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:16,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-04-06 13:37:16,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:16,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-04-06 13:37:16,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:16,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-06 13:37:16,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:16,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 13:37:16,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:37:16,493 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019170822] [2022-04-06 13:37:16,493 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2019170822] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:37:16,493 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 13:37:16,493 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-04-06 13:37:16,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722736565] [2022-04-06 13:37:16,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:37:16,493 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-04-06 13:37:16,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:37:16,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-04-06 13:37:16,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=256, Unknown=0, NotChecked=0, Total=306 [2022-04-06 13:37:16,494 INFO L87 Difference]: Start difference. First operand 685 states and 850 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) [2022-04-06 13:37:17,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:37:17,651 INFO L93 Difference]: Finished difference Result 695 states and 859 transitions. [2022-04-06 13:37:17,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-04-06 13:37:17,652 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 [2022-04-06 13:37:17,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:37:17,653 INFO L225 Difference]: With dead ends: 695 [2022-04-06 13:37:17,653 INFO L226 Difference]: Without dead ends: 633 [2022-04-06 13:37:17,653 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=100, Invalid=656, Unknown=0, NotChecked=0, Total=756 [2022-04-06 13:37:17,654 INFO L913 BasicCegarLoop]: 361 mSDtfsCounter, 330 mSDsluCounter, 1138 mSDsCounter, 0 mSdLazyCounter, 3541 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 340 SdHoareTripleChecker+Valid, 1499 SdHoareTripleChecker+Invalid, 3647 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 3541 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-04-06 13:37:17,654 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [340 Valid, 1499 Invalid, 3647 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 3541 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-04-06 13:37:17,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 633 states. [2022-04-06 13:37:17,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 633 to 629. [2022-04-06 13:37:17,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 629 states, 495 states have (on average 1.2505050505050506) internal successors, (619), 508 states have internal predecessors, (619), 70 states have call successors, (70), 48 states have call predecessors, (70), 63 states have return successors, (89), 79 states have call predecessors, (89), 65 states have call successors, (89) [2022-04-06 13:37:17,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 629 states to 629 states and 778 transitions. [2022-04-06 13:37:17,704 INFO L78 Accepts]: Start accepts. Automaton has 629 states and 778 transitions. Word has length 69 [2022-04-06 13:37:17,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:37:17,704 INFO L478 AbstractCegarLoop]: Abstraction has 629 states and 778 transitions. [2022-04-06 13:37:17,704 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.9444444444444446) internal successors, (53), 8 states have internal predecessors, (53), 2 states have call successors, (9), 9 states have call predecessors, (9), 4 states have return successors, (7), 4 states have call predecessors, (7), 1 states have call successors, (7) [2022-04-06 13:37:17,704 INFO L276 IsEmpty]: Start isEmpty. Operand 629 states and 778 transitions. [2022-04-06 13:37:17,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-04-06 13:37:17,705 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:37:17,705 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 13:37:17,705 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2022-04-06 13:37:17,705 INFO L403 AbstractCegarLoop]: === Iteration 58 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:37:17,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:37:17,705 INFO L85 PathProgramCache]: Analyzing trace with hash 1513722750, now seen corresponding path program 1 times [2022-04-06 13:37:17,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:37:17,705 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032969536] [2022-04-06 13:37:17,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:37:17,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:37:17,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:17,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:37:17,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:17,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:37:17,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:17,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 13:37:17,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:17,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-06 13:37:17,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:17,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-06 13:37:17,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:17,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-04-06 13:37:17,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:17,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-06 13:37:17,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:17,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-06 13:37:17,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:17,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 13:37:17,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:37:17,958 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032969536] [2022-04-06 13:37:17,958 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1032969536] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:37:17,958 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 13:37:17,958 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-04-06 13:37:17,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804888418] [2022-04-06 13:37:17,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:37:17,959 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-04-06 13:37:17,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:37:17,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-04-06 13:37:17,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=359, Unknown=0, NotChecked=0, Total=420 [2022-04-06 13:37:17,959 INFO L87 Difference]: Start difference. First operand 629 states and 778 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) [2022-04-06 13:37:19,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:37:19,343 INFO L93 Difference]: Finished difference Result 662 states and 817 transitions. [2022-04-06 13:37:19,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-04-06 13:37:19,344 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 [2022-04-06 13:37:19,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:37:19,345 INFO L225 Difference]: With dead ends: 662 [2022-04-06 13:37:19,345 INFO L226 Difference]: Without dead ends: 635 [2022-04-06 13:37:19,345 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=120, Invalid=692, Unknown=0, NotChecked=0, Total=812 [2022-04-06 13:37:19,346 INFO L913 BasicCegarLoop]: 408 mSDtfsCounter, 920 mSDsluCounter, 1474 mSDsCounter, 0 mSdLazyCounter, 3544 mSolverCounterSat, 326 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 922 SdHoareTripleChecker+Valid, 1882 SdHoareTripleChecker+Invalid, 3870 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 326 IncrementalHoareTripleChecker+Valid, 3544 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-04-06 13:37:19,346 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [922 Valid, 1882 Invalid, 3870 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [326 Valid, 3544 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-04-06 13:37:19,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 635 states. [2022-04-06 13:37:19,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 635 to 631. [2022-04-06 13:37:19,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 631 states, 497 states have (on average 1.243460764587525) internal successors, (618), 510 states have internal predecessors, (618), 70 states have call successors, (70), 48 states have call predecessors, (70), 63 states have return successors, (89), 79 states have call predecessors, (89), 65 states have call successors, (89) [2022-04-06 13:37:19,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 631 states to 631 states and 777 transitions. [2022-04-06 13:37:19,397 INFO L78 Accepts]: Start accepts. Automaton has 631 states and 777 transitions. Word has length 71 [2022-04-06 13:37:19,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:37:19,398 INFO L478 AbstractCegarLoop]: Abstraction has 631 states and 777 transitions. [2022-04-06 13:37:19,398 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 2.65) internal successors, (53), 10 states have internal predecessors, (53), 4 states have call successors, (10), 10 states have call predecessors, (10), 4 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) [2022-04-06 13:37:19,398 INFO L276 IsEmpty]: Start isEmpty. Operand 631 states and 777 transitions. [2022-04-06 13:37:19,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-04-06 13:37:19,399 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:37:19,399 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 13:37:19,399 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2022-04-06 13:37:19,399 INFO L403 AbstractCegarLoop]: === Iteration 59 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:37:19,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:37:19,400 INFO L85 PathProgramCache]: Analyzing trace with hash 1880837203, now seen corresponding path program 1 times [2022-04-06 13:37:19,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:37:19,400 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694436932] [2022-04-06 13:37:19,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:37:19,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:37:19,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:19,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:37:19,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:19,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:37:19,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:19,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 13:37:19,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:19,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-06 13:37:19,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:19,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-06 13:37:19,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:19,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-06 13:37:19,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:19,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-04-06 13:37:19,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:19,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-04-06 13:37:19,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:19,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-06 13:37:19,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:19,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 13:37:19,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:37:19,608 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694436932] [2022-04-06 13:37:19,608 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [694436932] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:37:19,608 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 13:37:19,608 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-04-06 13:37:19,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671892094] [2022-04-06 13:37:19,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:37:19,609 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-04-06 13:37:19,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:37:19,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-04-06 13:37:19,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=359, Unknown=0, NotChecked=0, Total=420 [2022-04-06 13:37:19,609 INFO L87 Difference]: Start difference. First operand 631 states and 777 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) [2022-04-06 13:37:21,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:37:21,074 INFO L93 Difference]: Finished difference Result 657 states and 805 transitions. [2022-04-06 13:37:21,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-04-06 13:37:21,074 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 [2022-04-06 13:37:21,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:37:21,075 INFO L225 Difference]: With dead ends: 657 [2022-04-06 13:37:21,075 INFO L226 Difference]: Without dead ends: 633 [2022-04-06 13:37:21,076 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=120, Invalid=692, Unknown=0, NotChecked=0, Total=812 [2022-04-06 13:37:21,076 INFO L913 BasicCegarLoop]: 403 mSDtfsCounter, 695 mSDsluCounter, 1634 mSDsCounter, 0 mSdLazyCounter, 3837 mSolverCounterSat, 239 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 697 SdHoareTripleChecker+Valid, 2037 SdHoareTripleChecker+Invalid, 4076 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 239 IncrementalHoareTripleChecker+Valid, 3837 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-04-06 13:37:21,076 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [697 Valid, 2037 Invalid, 4076 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [239 Valid, 3837 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-04-06 13:37:21,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 633 states. [2022-04-06 13:37:21,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 633 to 629. [2022-04-06 13:37:21,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 629 states, 496 states have (on average 1.2419354838709677) internal successors, (616), 509 states have internal predecessors, (616), 69 states have call successors, (69), 48 states have call predecessors, (69), 63 states have return successors, (88), 78 states have call predecessors, (88), 64 states have call successors, (88) [2022-04-06 13:37:21,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 629 states to 629 states and 773 transitions. [2022-04-06 13:37:21,127 INFO L78 Accepts]: Start accepts. Automaton has 629 states and 773 transitions. Word has length 74 [2022-04-06 13:37:21,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:37:21,127 INFO L478 AbstractCegarLoop]: Abstraction has 629 states and 773 transitions. [2022-04-06 13:37:21,127 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 2.7) internal successors, (54), 10 states have internal predecessors, (54), 4 states have call successors, (11), 10 states have call predecessors, (11), 4 states have return successors, (9), 5 states have call predecessors, (9), 3 states have call successors, (9) [2022-04-06 13:37:21,127 INFO L276 IsEmpty]: Start isEmpty. Operand 629 states and 773 transitions. [2022-04-06 13:37:21,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-04-06 13:37:21,128 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:37:21,128 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 13:37:21,128 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2022-04-06 13:37:21,128 INFO L403 AbstractCegarLoop]: === Iteration 60 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:37:21,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:37:21,128 INFO L85 PathProgramCache]: Analyzing trace with hash 488230751, now seen corresponding path program 1 times [2022-04-06 13:37:21,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:37:21,128 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321786282] [2022-04-06 13:37:21,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:37:21,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:37:21,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:21,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:37:21,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:21,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:37:21,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:21,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 13:37:21,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:21,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-06 13:37:21,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:21,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-06 13:37:21,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:21,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-04-06 13:37:21,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:21,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-06 13:37:21,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:21,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-06 13:37:21,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:21,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 13:37:21,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:37:21,314 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321786282] [2022-04-06 13:37:21,314 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [321786282] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:37:21,314 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 13:37:21,314 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-04-06 13:37:21,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639578564] [2022-04-06 13:37:21,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:37:21,314 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-04-06 13:37:21,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:37:21,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-04-06 13:37:21,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2022-04-06 13:37:21,315 INFO L87 Difference]: Start difference. First operand 629 states and 773 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) [2022-04-06 13:37:22,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:37:22,127 INFO L93 Difference]: Finished difference Result 667 states and 812 transitions. [2022-04-06 13:37:22,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-04-06 13:37:22,127 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 [2022-04-06 13:37:22,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:37:22,129 INFO L225 Difference]: With dead ends: 667 [2022-04-06 13:37:22,129 INFO L226 Difference]: Without dead ends: 622 [2022-04-06 13:37:22,129 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2022-04-06 13:37:22,129 INFO L913 BasicCegarLoop]: 389 mSDtfsCounter, 258 mSDsluCounter, 599 mSDsCounter, 0 mSdLazyCounter, 1480 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 259 SdHoareTripleChecker+Valid, 988 SdHoareTripleChecker+Invalid, 1566 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 1480 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-04-06 13:37:22,129 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [259 Valid, 988 Invalid, 1566 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 1480 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-04-06 13:37:22,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 622 states. [2022-04-06 13:37:22,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 622 to 622. [2022-04-06 13:37:22,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 622 states, 490 states have (on average 1.2428571428571429) internal successors, (609), 503 states have internal predecessors, (609), 68 states have call successors, (68), 48 states have call predecessors, (68), 63 states have return successors, (86), 77 states have call predecessors, (86), 63 states have call successors, (86) [2022-04-06 13:37:22,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 622 states to 622 states and 763 transitions. [2022-04-06 13:37:22,178 INFO L78 Accepts]: Start accepts. Automaton has 622 states and 763 transitions. Word has length 71 [2022-04-06 13:37:22,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:37:22,179 INFO L478 AbstractCegarLoop]: Abstraction has 622 states and 763 transitions. [2022-04-06 13:37:22,179 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.076923076923077) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-04-06 13:37:22,179 INFO L276 IsEmpty]: Start isEmpty. Operand 622 states and 763 transitions. [2022-04-06 13:37:22,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-04-06 13:37:22,180 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:37:22,180 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 13:37:22,180 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2022-04-06 13:37:22,180 INFO L403 AbstractCegarLoop]: === Iteration 61 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:37:22,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:37:22,180 INFO L85 PathProgramCache]: Analyzing trace with hash -756614912, now seen corresponding path program 1 times [2022-04-06 13:37:22,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:37:22,180 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231243106] [2022-04-06 13:37:22,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:37:22,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:37:22,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:22,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:37:22,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:22,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:37:22,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:22,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 13:37:22,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:22,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-06 13:37:22,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:22,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-06 13:37:22,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:22,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-04-06 13:37:22,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:22,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-06 13:37:22,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:22,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-06 13:37:22,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:22,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 13:37:22,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:37:22,368 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231243106] [2022-04-06 13:37:22,369 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [231243106] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:37:22,369 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 13:37:22,369 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-04-06 13:37:22,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855106410] [2022-04-06 13:37:22,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:37:22,369 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-04-06 13:37:22,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:37:22,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-04-06 13:37:22,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2022-04-06 13:37:22,369 INFO L87 Difference]: Start difference. First operand 622 states and 763 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) [2022-04-06 13:37:23,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:37:23,064 INFO L93 Difference]: Finished difference Result 660 states and 802 transitions. [2022-04-06 13:37:23,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-04-06 13:37:23,064 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 [2022-04-06 13:37:23,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:37:23,066 INFO L225 Difference]: With dead ends: 660 [2022-04-06 13:37:23,066 INFO L226 Difference]: Without dead ends: 616 [2022-04-06 13:37:23,066 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2022-04-06 13:37:23,066 INFO L913 BasicCegarLoop]: 381 mSDtfsCounter, 1050 mSDsluCounter, 510 mSDsCounter, 0 mSdLazyCounter, 1190 mSolverCounterSat, 364 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1051 SdHoareTripleChecker+Valid, 891 SdHoareTripleChecker+Invalid, 1554 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 364 IncrementalHoareTripleChecker+Valid, 1190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-04-06 13:37:23,066 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1051 Valid, 891 Invalid, 1554 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [364 Valid, 1190 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-04-06 13:37:23,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 616 states. [2022-04-06 13:37:23,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 616 to 616. [2022-04-06 13:37:23,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 616 states, 485 states have (on average 1.243298969072165) internal successors, (603), 498 states have internal predecessors, (603), 67 states have call successors, (67), 48 states have call predecessors, (67), 63 states have return successors, (85), 76 states have call predecessors, (85), 62 states have call successors, (85) [2022-04-06 13:37:23,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 616 states to 616 states and 755 transitions. [2022-04-06 13:37:23,125 INFO L78 Accepts]: Start accepts. Automaton has 616 states and 755 transitions. Word has length 71 [2022-04-06 13:37:23,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:37:23,125 INFO L478 AbstractCegarLoop]: Abstraction has 616 states and 755 transitions. [2022-04-06 13:37:23,125 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.076923076923077) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-04-06 13:37:23,125 INFO L276 IsEmpty]: Start isEmpty. Operand 616 states and 755 transitions. [2022-04-06 13:37:23,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-04-06 13:37:23,126 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:37:23,126 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 13:37:23,126 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2022-04-06 13:37:23,127 INFO L403 AbstractCegarLoop]: === Iteration 62 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:37:23,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:37:23,127 INFO L85 PathProgramCache]: Analyzing trace with hash 590503932, now seen corresponding path program 1 times [2022-04-06 13:37:23,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:37:23,127 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185656275] [2022-04-06 13:37:23,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:37:23,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:37:23,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:23,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:37:23,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:23,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:37:23,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:23,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 13:37:23,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:23,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-06 13:37:23,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:23,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-06 13:37:23,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:23,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-06 13:37:23,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:23,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 13:37:23,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:23,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-04-06 13:37:23,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:23,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-06 13:37:23,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:23,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 13:37:23,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:37:23,399 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185656275] [2022-04-06 13:37:23,399 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1185656275] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:37:23,399 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 13:37:23,399 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-04-06 13:37:23,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523874328] [2022-04-06 13:37:23,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:37:23,399 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-04-06 13:37:23,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:37:23,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-04-06 13:37:23,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=359, Unknown=0, NotChecked=0, Total=420 [2022-04-06 13:37:23,400 INFO L87 Difference]: Start difference. First operand 616 states and 755 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) [2022-04-06 13:37:24,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:37:24,521 INFO L93 Difference]: Finished difference Result 640 states and 781 transitions. [2022-04-06 13:37:24,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-04-06 13:37:24,522 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 [2022-04-06 13:37:24,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:37:24,523 INFO L225 Difference]: With dead ends: 640 [2022-04-06 13:37:24,523 INFO L226 Difference]: Without dead ends: 614 [2022-04-06 13:37:24,524 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=120, Invalid=692, Unknown=0, NotChecked=0, Total=812 [2022-04-06 13:37:24,524 INFO L913 BasicCegarLoop]: 385 mSDtfsCounter, 462 mSDsluCounter, 1531 mSDsCounter, 0 mSdLazyCounter, 3347 mSolverCounterSat, 160 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 464 SdHoareTripleChecker+Valid, 1916 SdHoareTripleChecker+Invalid, 3507 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 160 IncrementalHoareTripleChecker+Valid, 3347 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-04-06 13:37:24,524 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [464 Valid, 1916 Invalid, 3507 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [160 Valid, 3347 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-04-06 13:37:24,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 614 states. [2022-04-06 13:37:24,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 614 to 614. [2022-04-06 13:37:24,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 614 states, 483 states have (on average 1.2422360248447204) internal successors, (600), 496 states have internal predecessors, (600), 67 states have call successors, (67), 48 states have call predecessors, (67), 63 states have return successors, (85), 76 states have call predecessors, (85), 62 states have call successors, (85) [2022-04-06 13:37:24,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 614 states to 614 states and 752 transitions. [2022-04-06 13:37:24,573 INFO L78 Accepts]: Start accepts. Automaton has 614 states and 752 transitions. Word has length 77 [2022-04-06 13:37:24,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:37:24,574 INFO L478 AbstractCegarLoop]: Abstraction has 614 states and 752 transitions. [2022-04-06 13:37:24,574 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.7142857142857144) internal successors, (57), 10 states have internal predecessors, (57), 4 states have call successors, (11), 10 states have call predecessors, (11), 4 states have return successors, (9), 5 states have call predecessors, (9), 3 states have call successors, (9) [2022-04-06 13:37:24,574 INFO L276 IsEmpty]: Start isEmpty. Operand 614 states and 752 transitions. [2022-04-06 13:37:24,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-04-06 13:37:24,575 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:37:24,575 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 13:37:24,575 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2022-04-06 13:37:24,575 INFO L403 AbstractCegarLoop]: === Iteration 63 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:37:24,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:37:24,575 INFO L85 PathProgramCache]: Analyzing trace with hash -186895060, now seen corresponding path program 1 times [2022-04-06 13:37:24,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:37:24,575 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939534662] [2022-04-06 13:37:24,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:37:24,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:37:24,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:24,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:37:24,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:24,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:37:24,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:24,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 13:37:24,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:24,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-06 13:37:24,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:24,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-06 13:37:24,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:24,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-06 13:37:24,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:24,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 13:37:24,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:24,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-04-06 13:37:24,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:24,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-06 13:37:24,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:24,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 13:37:24,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:37:24,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1939534662] [2022-04-06 13:37:24,746 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1939534662] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:37:24,746 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 13:37:24,746 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-04-06 13:37:24,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958137066] [2022-04-06 13:37:24,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:37:24,746 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-04-06 13:37:24,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:37:24,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-04-06 13:37:24,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2022-04-06 13:37:24,747 INFO L87 Difference]: Start difference. First operand 614 states and 752 transitions. Second operand has 13 states, 13 states have (on average 4.461538461538462) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (11), 10 states have call predecessors, (11), 3 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2022-04-06 13:37:25,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:37:25,478 INFO L93 Difference]: Finished difference Result 652 states and 791 transitions. [2022-04-06 13:37:25,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-04-06 13:37:25,478 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.461538461538462) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (11), 10 states have call predecessors, (11), 3 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) Word has length 78 [2022-04-06 13:37:25,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:37:25,479 INFO L225 Difference]: With dead ends: 652 [2022-04-06 13:37:25,479 INFO L226 Difference]: Without dead ends: 598 [2022-04-06 13:37:25,479 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2022-04-06 13:37:25,480 INFO L913 BasicCegarLoop]: 360 mSDtfsCounter, 236 mSDsluCounter, 595 mSDsCounter, 0 mSdLazyCounter, 1367 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 237 SdHoareTripleChecker+Valid, 955 SdHoareTripleChecker+Invalid, 1449 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 1367 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-04-06 13:37:25,480 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [237 Valid, 955 Invalid, 1449 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 1367 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-04-06 13:37:25,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 598 states. [2022-04-06 13:37:25,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 598 to 598. [2022-04-06 13:37:25,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 598 states, 470 states have (on average 1.2382978723404254) internal successors, (582), 483 states have internal predecessors, (582), 64 states have call successors, (64), 48 states have call predecessors, (64), 63 states have return successors, (81), 73 states have call predecessors, (81), 59 states have call successors, (81) [2022-04-06 13:37:25,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 598 states to 598 states and 727 transitions. [2022-04-06 13:37:25,527 INFO L78 Accepts]: Start accepts. Automaton has 598 states and 727 transitions. Word has length 78 [2022-04-06 13:37:25,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:37:25,527 INFO L478 AbstractCegarLoop]: Abstraction has 598 states and 727 transitions. [2022-04-06 13:37:25,527 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.461538461538462) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (11), 10 states have call predecessors, (11), 3 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2022-04-06 13:37:25,527 INFO L276 IsEmpty]: Start isEmpty. Operand 598 states and 727 transitions. [2022-04-06 13:37:25,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-04-06 13:37:25,528 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:37:25,528 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 13:37:25,528 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2022-04-06 13:37:25,528 INFO L403 AbstractCegarLoop]: === Iteration 64 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:37:25,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:37:25,529 INFO L85 PathProgramCache]: Analyzing trace with hash 355041746, now seen corresponding path program 1 times [2022-04-06 13:37:25,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:37:25,529 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827531274] [2022-04-06 13:37:25,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:37:25,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:37:25,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:25,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:37:25,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:25,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:37:25,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:25,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 13:37:25,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:25,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-06 13:37:25,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:25,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-06 13:37:25,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:25,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-04-06 13:37:25,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:25,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-06 13:37:25,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:25,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-06 13:37:25,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:25,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 13:37:25,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:37:25,676 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827531274] [2022-04-06 13:37:25,676 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [827531274] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:37:25,676 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 13:37:25,676 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-04-06 13:37:25,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949518648] [2022-04-06 13:37:25,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:37:25,677 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-04-06 13:37:25,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:37:25,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-04-06 13:37:25,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2022-04-06 13:37:25,677 INFO L87 Difference]: Start difference. First operand 598 states and 727 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) [2022-04-06 13:37:26,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:37:26,418 INFO L93 Difference]: Finished difference Result 636 states and 766 transitions. [2022-04-06 13:37:26,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-04-06 13:37:26,419 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 [2022-04-06 13:37:26,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:37:26,420 INFO L225 Difference]: With dead ends: 636 [2022-04-06 13:37:26,420 INFO L226 Difference]: Without dead ends: 585 [2022-04-06 13:37:26,421 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2022-04-06 13:37:26,421 INFO L913 BasicCegarLoop]: 349 mSDtfsCounter, 738 mSDsluCounter, 617 mSDsCounter, 0 mSdLazyCounter, 1129 mSolverCounterSat, 260 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 739 SdHoareTripleChecker+Valid, 966 SdHoareTripleChecker+Invalid, 1389 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 260 IncrementalHoareTripleChecker+Valid, 1129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-04-06 13:37:26,427 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [739 Valid, 966 Invalid, 1389 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [260 Valid, 1129 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-04-06 13:37:26,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 585 states. [2022-04-06 13:37:26,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 585 to 585. [2022-04-06 13:37:26,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 585 states, 458 states have (on average 1.2336244541484715) internal successors, (565), 471 states have internal predecessors, (565), 63 states have call successors, (63), 48 states have call predecessors, (63), 63 states have return successors, (80), 72 states have call predecessors, (80), 58 states have call successors, (80) [2022-04-06 13:37:26,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 585 states to 585 states and 708 transitions. [2022-04-06 13:37:26,510 INFO L78 Accepts]: Start accepts. Automaton has 585 states and 708 transitions. Word has length 73 [2022-04-06 13:37:26,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:37:26,510 INFO L478 AbstractCegarLoop]: Abstraction has 585 states and 708 transitions. [2022-04-06 13:37:26,511 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.230769230769231) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-04-06 13:37:26,511 INFO L276 IsEmpty]: Start isEmpty. Operand 585 states and 708 transitions. [2022-04-06 13:37:26,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-04-06 13:37:26,511 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:37:26,511 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 13:37:26,512 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2022-04-06 13:37:26,512 INFO L403 AbstractCegarLoop]: === Iteration 65 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:37:26,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:37:26,512 INFO L85 PathProgramCache]: Analyzing trace with hash -1118214243, now seen corresponding path program 1 times [2022-04-06 13:37:26,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:37:26,512 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404219951] [2022-04-06 13:37:26,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:37:26,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:37:26,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:26,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:37:26,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:26,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:37:26,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:26,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 13:37:26,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:26,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-06 13:37:26,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:26,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-04-06 13:37:26,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:26,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-04-06 13:37:26,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:26,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-06 13:37:26,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:26,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-04-06 13:37:26,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:26,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 13:37:26,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:37:26,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404219951] [2022-04-06 13:37:26,760 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1404219951] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:37:26,760 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 13:37:26,760 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-04-06 13:37:26,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094597366] [2022-04-06 13:37:26,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:37:26,760 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-04-06 13:37:26,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:37:26,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-04-06 13:37:26,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=276, Unknown=0, NotChecked=0, Total=342 [2022-04-06 13:37:26,761 INFO L87 Difference]: Start difference. First operand 585 states and 708 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) [2022-04-06 13:37:28,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:37:28,951 INFO L93 Difference]: Finished difference Result 1254 states and 1513 transitions. [2022-04-06 13:37:28,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-04-06 13:37:28,951 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 [2022-04-06 13:37:28,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:37:28,953 INFO L225 Difference]: With dead ends: 1254 [2022-04-06 13:37:28,953 INFO L226 Difference]: Without dead ends: 1109 [2022-04-06 13:37:28,954 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 644 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=614, Invalid=2356, Unknown=0, NotChecked=0, Total=2970 [2022-04-06 13:37:28,954 INFO L913 BasicCegarLoop]: 354 mSDtfsCounter, 2190 mSDsluCounter, 819 mSDsCounter, 0 mSdLazyCounter, 3481 mSolverCounterSat, 700 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2194 SdHoareTripleChecker+Valid, 1173 SdHoareTripleChecker+Invalid, 4181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 700 IncrementalHoareTripleChecker+Valid, 3481 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-04-06 13:37:28,954 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [2194 Valid, 1173 Invalid, 4181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [700 Valid, 3481 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-04-06 13:37:28,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1109 states. [2022-04-06 13:37:29,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1109 to 916. [2022-04-06 13:37:29,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 916 states, 723 states have (on average 1.2572614107883817) internal successors, (909), 743 states have internal predecessors, (909), 95 states have call successors, (95), 76 states have call predecessors, (95), 97 states have return successors, (125), 103 states have call predecessors, (125), 90 states have call successors, (125) [2022-04-06 13:37:29,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 916 states to 916 states and 1129 transitions. [2022-04-06 13:37:29,029 INFO L78 Accepts]: Start accepts. Automaton has 916 states and 1129 transitions. Word has length 73 [2022-04-06 13:37:29,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:37:29,029 INFO L478 AbstractCegarLoop]: Abstraction has 916 states and 1129 transitions. [2022-04-06 13:37:29,029 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.8947368421052633) internal successors, (55), 10 states have internal predecessors, (55), 5 states have call successors, (10), 10 states have call predecessors, (10), 4 states have return successors, (8), 6 states have call predecessors, (8), 4 states have call successors, (8) [2022-04-06 13:37:29,029 INFO L276 IsEmpty]: Start isEmpty. Operand 916 states and 1129 transitions. [2022-04-06 13:37:29,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-04-06 13:37:29,030 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:37:29,031 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 13:37:29,031 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2022-04-06 13:37:29,031 INFO L403 AbstractCegarLoop]: === Iteration 66 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:37:29,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:37:29,031 INFO L85 PathProgramCache]: Analyzing trace with hash 1368905532, now seen corresponding path program 1 times [2022-04-06 13:37:29,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:37:29,031 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11879426] [2022-04-06 13:37:29,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:37:29,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:37:29,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:29,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:37:29,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:29,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:37:29,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:29,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 13:37:29,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:29,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-06 13:37:29,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:29,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-04-06 13:37:29,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:29,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-04-06 13:37:29,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:29,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-06 13:37:29,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:29,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-04-06 13:37:29,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:29,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 13:37:29,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:37:29,164 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11879426] [2022-04-06 13:37:29,164 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [11879426] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:37:29,164 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 13:37:29,164 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-04-06 13:37:29,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503070903] [2022-04-06 13:37:29,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:37:29,164 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-04-06 13:37:29,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:37:29,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-04-06 13:37:29,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2022-04-06 13:37:29,165 INFO L87 Difference]: Start difference. First operand 916 states and 1129 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) [2022-04-06 13:37:30,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:37:30,336 INFO L93 Difference]: Finished difference Result 1157 states and 1397 transitions. [2022-04-06 13:37:30,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-04-06 13:37:30,336 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 [2022-04-06 13:37:30,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:37:30,338 INFO L225 Difference]: With dead ends: 1157 [2022-04-06 13:37:30,338 INFO L226 Difference]: Without dead ends: 1052 [2022-04-06 13:37:30,338 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=189, Invalid=567, Unknown=0, NotChecked=0, Total=756 [2022-04-06 13:37:30,339 INFO L913 BasicCegarLoop]: 579 mSDtfsCounter, 2009 mSDsluCounter, 559 mSDsCounter, 0 mSdLazyCounter, 1613 mSolverCounterSat, 636 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2013 SdHoareTripleChecker+Valid, 1138 SdHoareTripleChecker+Invalid, 2249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 636 IncrementalHoareTripleChecker+Valid, 1613 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-04-06 13:37:30,339 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [2013 Valid, 1138 Invalid, 2249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [636 Valid, 1613 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-04-06 13:37:30,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1052 states. [2022-04-06 13:37:30,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1052 to 993. [2022-04-06 13:37:30,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 993 states, 782 states have (on average 1.2429667519181586) internal successors, (972), 798 states have internal predecessors, (972), 107 states have call successors, (107), 80 states have call predecessors, (107), 103 states have return successors, (138), 119 states have call predecessors, (138), 102 states have call successors, (138) [2022-04-06 13:37:30,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 993 states to 993 states and 1217 transitions. [2022-04-06 13:37:30,425 INFO L78 Accepts]: Start accepts. Automaton has 993 states and 1217 transitions. Word has length 73 [2022-04-06 13:37:30,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:37:30,425 INFO L478 AbstractCegarLoop]: Abstraction has 993 states and 1217 transitions. [2022-04-06 13:37:30,425 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.9285714285714284) internal successors, (55), 6 states have internal predecessors, (55), 5 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2022-04-06 13:37:30,425 INFO L276 IsEmpty]: Start isEmpty. Operand 993 states and 1217 transitions. [2022-04-06 13:37:30,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-04-06 13:37:30,426 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:37:30,426 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 13:37:30,427 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2022-04-06 13:37:30,427 INFO L403 AbstractCegarLoop]: === Iteration 67 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:37:30,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:37:30,427 INFO L85 PathProgramCache]: Analyzing trace with hash -529895932, now seen corresponding path program 1 times [2022-04-06 13:37:30,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:37:30,427 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388504209] [2022-04-06 13:37:30,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:37:30,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:37:30,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:30,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:37:30,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:30,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:37:30,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:30,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 13:37:30,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:30,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-06 13:37:30,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:30,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-06 13:37:30,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:30,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-06 13:37:30,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:30,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-04-06 13:37:30,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:30,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-04-06 13:37:30,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:30,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-06 13:37:30,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:30,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 13:37:30,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:37:30,616 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388504209] [2022-04-06 13:37:30,616 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1388504209] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:37:30,616 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 13:37:30,616 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-04-06 13:37:30,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908518143] [2022-04-06 13:37:30,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:37:30,617 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-04-06 13:37:30,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:37:30,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-04-06 13:37:30,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2022-04-06 13:37:30,617 INFO L87 Difference]: Start difference. First operand 993 states and 1217 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) [2022-04-06 13:37:31,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:37:31,260 INFO L93 Difference]: Finished difference Result 1022 states and 1245 transitions. [2022-04-06 13:37:31,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-04-06 13:37:31,260 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 [2022-04-06 13:37:31,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:37:31,262 INFO L225 Difference]: With dead ends: 1022 [2022-04-06 13:37:31,262 INFO L226 Difference]: Without dead ends: 945 [2022-04-06 13:37:31,262 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2022-04-06 13:37:31,262 INFO L913 BasicCegarLoop]: 320 mSDtfsCounter, 352 mSDsluCounter, 741 mSDsCounter, 0 mSdLazyCounter, 1515 mSolverCounterSat, 129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 353 SdHoareTripleChecker+Valid, 1061 SdHoareTripleChecker+Invalid, 1644 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 1515 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-04-06 13:37:31,263 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [353 Valid, 1061 Invalid, 1644 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [129 Valid, 1515 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-04-06 13:37:31,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 945 states. [2022-04-06 13:37:31,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 945 to 945. [2022-04-06 13:37:31,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 945 states, 748 states have (on average 1.2459893048128343) internal successors, (932), 764 states have internal predecessors, (932), 97 states have call successors, (97), 76 states have call predecessors, (97), 99 states have return successors, (126), 109 states have call predecessors, (126), 92 states have call successors, (126) [2022-04-06 13:37:31,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 945 states to 945 states and 1155 transitions. [2022-04-06 13:37:31,342 INFO L78 Accepts]: Start accepts. Automaton has 945 states and 1155 transitions. Word has length 75 [2022-04-06 13:37:31,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:37:31,367 INFO L478 AbstractCegarLoop]: Abstraction has 945 states and 1155 transitions. [2022-04-06 13:37:31,367 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.6666666666666665) internal successors, (55), 5 states have internal predecessors, (55), 2 states have call successors, (11), 10 states have call predecessors, (11), 3 states have return successors, (9), 4 states have call predecessors, (9), 2 states have call successors, (9) [2022-04-06 13:37:31,367 INFO L276 IsEmpty]: Start isEmpty. Operand 945 states and 1155 transitions. [2022-04-06 13:37:31,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-04-06 13:37:31,369 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:37:31,369 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 13:37:31,369 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2022-04-06 13:37:31,369 INFO L403 AbstractCegarLoop]: === Iteration 68 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:37:31,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:37:31,369 INFO L85 PathProgramCache]: Analyzing trace with hash 1642144115, now seen corresponding path program 1 times [2022-04-06 13:37:31,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:37:31,369 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322096870] [2022-04-06 13:37:31,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:37:31,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:37:31,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:31,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:37:31,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:31,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:37:31,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:31,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 13:37:31,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:31,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-06 13:37:31,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:31,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-06 13:37:31,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:31,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-04-06 13:37:31,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:31,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-04-06 13:37:31,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:31,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 13:37:31,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:37:31,515 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322096870] [2022-04-06 13:37:31,515 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [322096870] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:37:31,515 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 13:37:31,515 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-04-06 13:37:31,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117213852] [2022-04-06 13:37:31,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:37:31,515 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-04-06 13:37:31,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:37:31,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-04-06 13:37:31,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2022-04-06 13:37:31,515 INFO L87 Difference]: Start difference. First operand 945 states and 1155 transitions. Second operand has 12 states, 12 states have (on average 4.75) internal successors, (57), 4 states have internal predecessors, (57), 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) [2022-04-06 13:37:32,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:37:32,289 INFO L93 Difference]: Finished difference Result 990 states and 1203 transitions. [2022-04-06 13:37:32,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-04-06 13:37:32,289 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.75) internal successors, (57), 4 states have internal predecessors, (57), 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 73 [2022-04-06 13:37:32,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:37:32,291 INFO L225 Difference]: With dead ends: 990 [2022-04-06 13:37:32,291 INFO L226 Difference]: Without dead ends: 929 [2022-04-06 13:37:32,291 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2022-04-06 13:37:32,292 INFO L913 BasicCegarLoop]: 304 mSDtfsCounter, 166 mSDsluCounter, 672 mSDsCounter, 0 mSdLazyCounter, 1216 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 976 SdHoareTripleChecker+Invalid, 1275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 1216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-04-06 13:37:32,292 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [168 Valid, 976 Invalid, 1275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 1216 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-04-06 13:37:32,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 929 states. [2022-04-06 13:37:32,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 929 to 929. [2022-04-06 13:37:32,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 929 states, 734 states have (on average 1.2452316076294279) internal successors, (914), 750 states have internal predecessors, (914), 95 states have call successors, (95), 76 states have call predecessors, (95), 99 states have return successors, (122), 107 states have call predecessors, (122), 90 states have call successors, (122) [2022-04-06 13:37:32,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 929 states to 929 states and 1131 transitions. [2022-04-06 13:37:32,369 INFO L78 Accepts]: Start accepts. Automaton has 929 states and 1131 transitions. Word has length 73 [2022-04-06 13:37:32,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:37:32,369 INFO L478 AbstractCegarLoop]: Abstraction has 929 states and 1131 transitions. [2022-04-06 13:37:32,370 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.75) internal successors, (57), 4 states have internal predecessors, (57), 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) [2022-04-06 13:37:32,370 INFO L276 IsEmpty]: Start isEmpty. Operand 929 states and 1131 transitions. [2022-04-06 13:37:32,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-04-06 13:37:32,371 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:37:32,371 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 13:37:32,371 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2022-04-06 13:37:32,372 INFO L403 AbstractCegarLoop]: === Iteration 69 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:37:32,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:37:32,372 INFO L85 PathProgramCache]: Analyzing trace with hash 780600349, now seen corresponding path program 1 times [2022-04-06 13:37:32,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:37:32,372 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251777442] [2022-04-06 13:37:32,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:37:32,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:37:32,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:32,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:37:32,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:32,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:37:32,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:32,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 13:37:32,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:32,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-04-06 13:37:32,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:32,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 13:37:32,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:32,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-06 13:37:32,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:32,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-06 13:37:32,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:32,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 13:37:32,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:32,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-04-06 13:37:32,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:32,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 13:37:32,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:37:32,588 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251777442] [2022-04-06 13:37:32,588 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [251777442] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:37:32,588 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 13:37:32,588 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-04-06 13:37:32,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323455383] [2022-04-06 13:37:32,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:37:32,589 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-04-06 13:37:32,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:37:32,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-04-06 13:37:32,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2022-04-06 13:37:32,589 INFO L87 Difference]: Start difference. First operand 929 states and 1131 transitions. Second operand has 13 states, 13 states have (on average 4.230769230769231) internal successors, (55), 5 states have internal predecessors, (55), 2 states have call successors, (13), 9 states have call predecessors, (13), 3 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2022-04-06 13:37:33,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:37:33,365 INFO L93 Difference]: Finished difference Result 1093 states and 1333 transitions. [2022-04-06 13:37:33,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-04-06 13:37:33,366 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.230769230769231) internal successors, (55), 5 states have internal predecessors, (55), 2 states have call successors, (13), 9 states have call predecessors, (13), 3 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) Word has length 77 [2022-04-06 13:37:33,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:37:33,368 INFO L225 Difference]: With dead ends: 1093 [2022-04-06 13:37:33,368 INFO L226 Difference]: Without dead ends: 915 [2022-04-06 13:37:33,369 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2022-04-06 13:37:33,369 INFO L913 BasicCegarLoop]: 296 mSDtfsCounter, 345 mSDsluCounter, 871 mSDsCounter, 0 mSdLazyCounter, 1168 mSolverCounterSat, 122 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 347 SdHoareTripleChecker+Valid, 1167 SdHoareTripleChecker+Invalid, 1290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 122 IncrementalHoareTripleChecker+Valid, 1168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-04-06 13:37:33,369 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [347 Valid, 1167 Invalid, 1290 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [122 Valid, 1168 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-04-06 13:37:33,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 915 states. [2022-04-06 13:37:33,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 915 to 915. [2022-04-06 13:37:33,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 915 states, 720 states have (on average 1.238888888888889) internal successors, (892), 736 states have internal predecessors, (892), 95 states have call successors, (95), 76 states have call predecessors, (95), 99 states have return successors, (122), 107 states have call predecessors, (122), 90 states have call successors, (122) [2022-04-06 13:37:33,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 915 states to 915 states and 1109 transitions. [2022-04-06 13:37:33,461 INFO L78 Accepts]: Start accepts. Automaton has 915 states and 1109 transitions. Word has length 77 [2022-04-06 13:37:33,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:37:33,462 INFO L478 AbstractCegarLoop]: Abstraction has 915 states and 1109 transitions. [2022-04-06 13:37:33,462 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.230769230769231) internal successors, (55), 5 states have internal predecessors, (55), 2 states have call successors, (13), 9 states have call predecessors, (13), 3 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2022-04-06 13:37:33,462 INFO L276 IsEmpty]: Start isEmpty. Operand 915 states and 1109 transitions. [2022-04-06 13:37:33,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-04-06 13:37:33,464 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:37:33,464 INFO L499 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 13:37:33,464 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2022-04-06 13:37:33,464 INFO L403 AbstractCegarLoop]: === Iteration 70 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:37:33,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:37:33,464 INFO L85 PathProgramCache]: Analyzing trace with hash 1219602648, now seen corresponding path program 1 times [2022-04-06 13:37:33,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:37:33,465 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081155329] [2022-04-06 13:37:33,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:37:33,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:37:33,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:33,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:37:33,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:33,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:37:33,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:33,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 13:37:33,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:33,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-06 13:37:33,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:33,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-06 13:37:33,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:33,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-06 13:37:33,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:33,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-04-06 13:37:33,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:33,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-04-06 13:37:33,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:33,602 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-04-06 13:37:33,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:37:33,602 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081155329] [2022-04-06 13:37:33,602 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1081155329] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:37:33,602 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 13:37:33,602 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-04-06 13:37:33,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903540372] [2022-04-06 13:37:33,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:37:33,603 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-04-06 13:37:33,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:37:33,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-04-06 13:37:33,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2022-04-06 13:37:33,603 INFO L87 Difference]: Start difference. First operand 915 states and 1109 transitions. Second operand has 12 states, 12 states have (on average 4.583333333333333) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (10), 9 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-04-06 13:37:34,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:37:34,258 INFO L93 Difference]: Finished difference Result 960 states and 1157 transitions. [2022-04-06 13:37:34,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-04-06 13:37:34,258 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.583333333333333) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (10), 9 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 75 [2022-04-06 13:37:34,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:37:34,260 INFO L225 Difference]: With dead ends: 960 [2022-04-06 13:37:34,260 INFO L226 Difference]: Without dead ends: 895 [2022-04-06 13:37:34,260 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2022-04-06 13:37:34,260 INFO L913 BasicCegarLoop]: 288 mSDtfsCounter, 547 mSDsluCounter, 622 mSDsCounter, 0 mSdLazyCounter, 1038 mSolverCounterSat, 204 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 549 SdHoareTripleChecker+Valid, 910 SdHoareTripleChecker+Invalid, 1242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 204 IncrementalHoareTripleChecker+Valid, 1038 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-04-06 13:37:34,260 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [549 Valid, 910 Invalid, 1242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [204 Valid, 1038 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-04-06 13:37:34,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 895 states. [2022-04-06 13:37:34,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 895 to 895. [2022-04-06 13:37:34,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 895 states, 704 states have (on average 1.2386363636363635) internal successors, (872), 720 states have internal predecessors, (872), 91 states have call successors, (91), 76 states have call predecessors, (91), 99 states have return successors, (118), 103 states have call predecessors, (118), 86 states have call successors, (118) [2022-04-06 13:37:34,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 895 states to 895 states and 1081 transitions. [2022-04-06 13:37:34,333 INFO L78 Accepts]: Start accepts. Automaton has 895 states and 1081 transitions. Word has length 75 [2022-04-06 13:37:34,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:37:34,333 INFO L478 AbstractCegarLoop]: Abstraction has 895 states and 1081 transitions. [2022-04-06 13:37:34,333 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.583333333333333) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (10), 9 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-04-06 13:37:34,333 INFO L276 IsEmpty]: Start isEmpty. Operand 895 states and 1081 transitions. [2022-04-06 13:37:34,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-04-06 13:37:34,334 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:37:34,334 INFO L499 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 13:37:34,334 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2022-04-06 13:37:34,335 INFO L403 AbstractCegarLoop]: === Iteration 71 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:37:34,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:37:34,335 INFO L85 PathProgramCache]: Analyzing trace with hash 461830745, now seen corresponding path program 1 times [2022-04-06 13:37:34,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:37:34,335 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812219648] [2022-04-06 13:37:34,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:37:34,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:37:34,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:34,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:37:34,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:34,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:37:34,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:34,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 13:37:34,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:34,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-06 13:37:34,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:34,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-06 13:37:34,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:34,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-04-06 13:37:34,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:34,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-04-06 13:37:34,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:34,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-04-06 13:37:34,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:34,484 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-04-06 13:37:34,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:37:34,484 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812219648] [2022-04-06 13:37:34,484 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1812219648] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 13:37:34,485 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1941258117] [2022-04-06 13:37:34,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:37:34,485 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 13:37:34,485 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 13:37:34,486 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 13:37:34,486 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-04-06 13:37:34,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:34,661 INFO L263 TraceCheckSpWp]: Trace formula consists of 908 conjuncts, 4 conjunts are in the unsatisfiable core [2022-04-06 13:37:34,665 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 13:37:34,735 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 13:37:34,735 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-06 13:37:34,735 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1941258117] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:37:34,735 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-06 13:37:34,735 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 12 [2022-04-06 13:37:34,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324318997] [2022-04-06 13:37:34,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:37:34,736 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-04-06 13:37:34,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:37:34,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-04-06 13:37:34,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2022-04-06 13:37:34,736 INFO L87 Difference]: Start difference. First operand 895 states and 1081 transitions. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-04-06 13:37:34,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:37:34,805 INFO L93 Difference]: Finished difference Result 929 states and 1113 transitions. [2022-04-06 13:37:34,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-04-06 13:37:34,806 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (10), 2 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 77 [2022-04-06 13:37:34,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:37:34,807 INFO L225 Difference]: With dead ends: 929 [2022-04-06 13:37:34,807 INFO L226 Difference]: Without dead ends: 834 [2022-04-06 13:37:34,808 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2022-04-06 13:37:34,808 INFO L913 BasicCegarLoop]: 295 mSDtfsCounter, 0 mSDsluCounter, 879 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1174 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-06 13:37:34,808 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 1174 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-06 13:37:34,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 834 states. [2022-04-06 13:37:34,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 834 to 834. [2022-04-06 13:37:34,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 834 states, 658 states have (on average 1.2462006079027355) internal successors, (820), 671 states have internal predecessors, (820), 85 states have call successors, (85), 73 states have call predecessors, (85), 90 states have return successors, (106), 94 states have call predecessors, (106), 80 states have call successors, (106) [2022-04-06 13:37:34,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 834 states to 834 states and 1011 transitions. [2022-04-06 13:37:34,872 INFO L78 Accepts]: Start accepts. Automaton has 834 states and 1011 transitions. Word has length 77 [2022-04-06 13:37:34,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:37:34,873 INFO L478 AbstractCegarLoop]: Abstraction has 834 states and 1011 transitions. [2022-04-06 13:37:34,873 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-04-06 13:37:34,873 INFO L276 IsEmpty]: Start isEmpty. Operand 834 states and 1011 transitions. [2022-04-06 13:37:34,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-04-06 13:37:34,874 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:37:34,875 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 13:37:34,893 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-04-06 13:37:35,087 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 13:37:35,088 INFO L403 AbstractCegarLoop]: === Iteration 72 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:37:35,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:37:35,088 INFO L85 PathProgramCache]: Analyzing trace with hash 1363389701, now seen corresponding path program 1 times [2022-04-06 13:37:35,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:37:35,088 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793368734] [2022-04-06 13:37:35,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:37:35,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:37:35,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:35,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:37:35,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:35,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:37:35,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:35,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 13:37:35,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:35,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-04-06 13:37:35,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:35,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 13:37:35,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:35,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-06 13:37:35,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:35,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-06 13:37:35,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:35,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 13:37:35,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:35,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-06 13:37:35,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:35,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-04-06 13:37:35,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:35,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 13:37:35,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:37:35,293 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793368734] [2022-04-06 13:37:35,293 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1793368734] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:37:35,293 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 13:37:35,293 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-04-06 13:37:35,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113061000] [2022-04-06 13:37:35,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:37:35,294 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-04-06 13:37:35,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:37:35,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-04-06 13:37:35,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2022-04-06 13:37:35,294 INFO L87 Difference]: Start difference. First operand 834 states and 1011 transitions. Second operand has 14 states, 14 states have (on average 4.071428571428571) internal successors, (57), 6 states have internal predecessors, (57), 4 states have call successors, (14), 11 states have call predecessors, (14), 5 states have return successors, (10), 6 states have call predecessors, (10), 3 states have call successors, (10) [2022-04-06 13:37:35,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:37:35,861 INFO L93 Difference]: Finished difference Result 966 states and 1179 transitions. [2022-04-06 13:37:35,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-04-06 13:37:35,861 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.071428571428571) internal successors, (57), 6 states have internal predecessors, (57), 4 states have call successors, (14), 11 states have call predecessors, (14), 5 states have return successors, (10), 6 states have call predecessors, (10), 3 states have call successors, (10) Word has length 81 [2022-04-06 13:37:35,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:37:35,863 INFO L225 Difference]: With dead ends: 966 [2022-04-06 13:37:35,864 INFO L226 Difference]: Without dead ends: 802 [2022-04-06 13:37:35,864 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=121, Invalid=385, Unknown=0, NotChecked=0, Total=506 [2022-04-06 13:37:35,865 INFO L913 BasicCegarLoop]: 260 mSDtfsCounter, 649 mSDsluCounter, 495 mSDsCounter, 0 mSdLazyCounter, 633 mSolverCounterSat, 209 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 656 SdHoareTripleChecker+Valid, 755 SdHoareTripleChecker+Invalid, 842 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 209 IncrementalHoareTripleChecker+Valid, 633 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-04-06 13:37:35,869 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [656 Valid, 755 Invalid, 842 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [209 Valid, 633 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-04-06 13:37:35,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 802 states. [2022-04-06 13:37:35,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 802 to 802. [2022-04-06 13:37:35,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 802 states, 632 states have (on average 1.25) internal successors, (790), 643 states have internal predecessors, (790), 83 states have call successors, (83), 71 states have call predecessors, (83), 86 states have return successors, (102), 92 states have call predecessors, (102), 78 states have call successors, (102) [2022-04-06 13:37:35,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 802 states to 802 states and 975 transitions. [2022-04-06 13:37:35,941 INFO L78 Accepts]: Start accepts. Automaton has 802 states and 975 transitions. Word has length 81 [2022-04-06 13:37:35,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:37:35,941 INFO L478 AbstractCegarLoop]: Abstraction has 802 states and 975 transitions. [2022-04-06 13:37:35,941 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.071428571428571) internal successors, (57), 6 states have internal predecessors, (57), 4 states have call successors, (14), 11 states have call predecessors, (14), 5 states have return successors, (10), 6 states have call predecessors, (10), 3 states have call successors, (10) [2022-04-06 13:37:35,941 INFO L276 IsEmpty]: Start isEmpty. Operand 802 states and 975 transitions. [2022-04-06 13:37:35,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-04-06 13:37:35,942 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:37:35,942 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 13:37:35,942 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2022-04-06 13:37:35,943 INFO L403 AbstractCegarLoop]: === Iteration 73 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:37:35,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:37:35,943 INFO L85 PathProgramCache]: Analyzing trace with hash -1220432173, now seen corresponding path program 1 times [2022-04-06 13:37:35,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:37:35,943 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315172787] [2022-04-06 13:37:35,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:37:35,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:37:35,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:35,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:37:35,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:36,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:37:36,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:36,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 13:37:36,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:36,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-06 13:37:36,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:36,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-04-06 13:37:36,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:36,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-04-06 13:37:36,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:36,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-06 13:37:36,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:36,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-06 13:37:36,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:36,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-06 13:37:36,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:36,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 13:37:36,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:37:36,149 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315172787] [2022-04-06 13:37:36,149 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1315172787] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:37:36,149 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 13:37:36,149 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-04-06 13:37:36,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056296796] [2022-04-06 13:37:36,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:37:36,149 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-04-06 13:37:36,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:37:36,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-04-06 13:37:36,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=246, Unknown=0, NotChecked=0, Total=306 [2022-04-06 13:37:36,150 INFO L87 Difference]: Start difference. First operand 802 states and 975 transitions. Second operand has 18 states, 18 states have (on average 3.2222222222222223) internal successors, (58), 9 states have internal predecessors, (58), 5 states have call successors, (11), 10 states have call predecessors, (11), 4 states have return successors, (9), 6 states have call predecessors, (9), 5 states have call successors, (9) [2022-04-06 13:37:37,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:37:37,176 INFO L93 Difference]: Finished difference Result 847 states and 1020 transitions. [2022-04-06 13:37:37,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-04-06 13:37:37,176 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.2222222222222223) internal successors, (58), 9 states have internal predecessors, (58), 5 states have call successors, (11), 10 states have call predecessors, (11), 4 states have return successors, (9), 6 states have call predecessors, (9), 5 states have call successors, (9) Word has length 78 [2022-04-06 13:37:37,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:37:37,177 INFO L225 Difference]: With dead ends: 847 [2022-04-06 13:37:37,177 INFO L226 Difference]: Without dead ends: 714 [2022-04-06 13:37:37,178 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=271, Invalid=851, Unknown=0, NotChecked=0, Total=1122 [2022-04-06 13:37:37,178 INFO L913 BasicCegarLoop]: 425 mSDtfsCounter, 1101 mSDsluCounter, 1008 mSDsCounter, 0 mSdLazyCounter, 2361 mSolverCounterSat, 405 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1103 SdHoareTripleChecker+Valid, 1433 SdHoareTripleChecker+Invalid, 2766 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 405 IncrementalHoareTripleChecker+Valid, 2361 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-04-06 13:37:37,178 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1103 Valid, 1433 Invalid, 2766 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [405 Valid, 2361 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-04-06 13:37:37,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 714 states. [2022-04-06 13:37:37,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 714 to 366. [2022-04-06 13:37:37,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 366 states, 288 states have (on average 1.25) internal successors, (360), 292 states have internal predecessors, (360), 40 states have call successors, (40), 35 states have call predecessors, (40), 37 states have return successors, (44), 40 states have call predecessors, (44), 36 states have call successors, (44) [2022-04-06 13:37:37,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 366 states to 366 states and 444 transitions. [2022-04-06 13:37:37,215 INFO L78 Accepts]: Start accepts. Automaton has 366 states and 444 transitions. Word has length 78 [2022-04-06 13:37:37,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:37:37,215 INFO L478 AbstractCegarLoop]: Abstraction has 366 states and 444 transitions. [2022-04-06 13:37:37,215 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.2222222222222223) internal successors, (58), 9 states have internal predecessors, (58), 5 states have call successors, (11), 10 states have call predecessors, (11), 4 states have return successors, (9), 6 states have call predecessors, (9), 5 states have call successors, (9) [2022-04-06 13:37:37,215 INFO L276 IsEmpty]: Start isEmpty. Operand 366 states and 444 transitions. [2022-04-06 13:37:37,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-04-06 13:37:37,216 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:37:37,216 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 13:37:37,216 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2022-04-06 13:37:37,216 INFO L403 AbstractCegarLoop]: === Iteration 74 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:37:37,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:37:37,216 INFO L85 PathProgramCache]: Analyzing trace with hash -1514865381, now seen corresponding path program 1 times [2022-04-06 13:37:37,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:37:37,216 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888692664] [2022-04-06 13:37:37,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:37:37,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:37:37,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:37,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:37:37,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:37,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:37:37,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:37,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 13:37:37,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:37,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-06 13:37:37,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:37,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-06 13:37:37,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:37,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-04-06 13:37:37,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:37,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-04-06 13:37:37,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:37,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-06 13:37:37,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:37,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 13:37:37,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:37:37,449 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888692664] [2022-04-06 13:37:37,449 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [888692664] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:37:37,449 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 13:37:37,449 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-04-06 13:37:37,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842715703] [2022-04-06 13:37:37,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:37:37,450 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-04-06 13:37:37,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:37:37,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-04-06 13:37:37,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=327, Unknown=0, NotChecked=0, Total=380 [2022-04-06 13:37:37,450 INFO L87 Difference]: Start difference. First operand 366 states and 444 transitions. Second operand has 20 states, 20 states have (on average 3.05) internal successors, (61), 9 states have internal predecessors, (61), 2 states have call successors, (10), 9 states have call predecessors, (10), 5 states have return successors, (8), 5 states have call predecessors, (8), 1 states have call successors, (8) [2022-04-06 13:37:38,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:37:38,073 INFO L93 Difference]: Finished difference Result 368 states and 445 transitions. [2022-04-06 13:37:38,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-04-06 13:37:38,074 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.05) internal successors, (61), 9 states have internal predecessors, (61), 2 states have call successors, (10), 9 states have call predecessors, (10), 5 states have return successors, (8), 5 states have call predecessors, (8), 1 states have call successors, (8) Word has length 79 [2022-04-06 13:37:38,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:37:38,074 INFO L225 Difference]: With dead ends: 368 [2022-04-06 13:37:38,074 INFO L226 Difference]: Without dead ends: 289 [2022-04-06 13:37:38,075 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=61, Invalid=401, Unknown=0, NotChecked=0, Total=462 [2022-04-06 13:37:38,075 INFO L913 BasicCegarLoop]: 219 mSDtfsCounter, 192 mSDsluCounter, 1375 mSDsCounter, 0 mSdLazyCounter, 2086 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 193 SdHoareTripleChecker+Valid, 1594 SdHoareTripleChecker+Invalid, 2153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 2086 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-04-06 13:37:38,075 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [193 Valid, 1594 Invalid, 2153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 2086 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-04-06 13:37:38,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2022-04-06 13:37:38,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 289. [2022-04-06 13:37:38,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 289 states, 225 states have (on average 1.271111111111111) internal successors, (286), 227 states have internal predecessors, (286), 32 states have call successors, (32), 29 states have call predecessors, (32), 31 states have return successors, (37), 33 states have call predecessors, (37), 29 states have call successors, (37) [2022-04-06 13:37:38,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 355 transitions. [2022-04-06 13:37:38,104 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 355 transitions. Word has length 79 [2022-04-06 13:37:38,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:37:38,104 INFO L478 AbstractCegarLoop]: Abstraction has 289 states and 355 transitions. [2022-04-06 13:37:38,105 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.05) internal successors, (61), 9 states have internal predecessors, (61), 2 states have call successors, (10), 9 states have call predecessors, (10), 5 states have return successors, (8), 5 states have call predecessors, (8), 1 states have call successors, (8) [2022-04-06 13:37:38,106 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 355 transitions. [2022-04-06 13:37:38,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-04-06 13:37:38,106 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:37:38,107 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 13:37:38,107 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2022-04-06 13:37:38,107 INFO L403 AbstractCegarLoop]: === Iteration 75 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:37:38,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:37:38,107 INFO L85 PathProgramCache]: Analyzing trace with hash -1000162365, now seen corresponding path program 1 times [2022-04-06 13:37:38,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:37:38,107 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063254872] [2022-04-06 13:37:38,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:37:38,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:37:38,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:38,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:37:38,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:38,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:37:38,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:38,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 13:37:38,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:38,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-04-06 13:37:38,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:38,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 13:37:38,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:38,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-06 13:37:38,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:38,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-06 13:37:38,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:38,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 13:37:38,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:38,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-06 13:37:38,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:38,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-04-06 13:37:38,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:38,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 13:37:38,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:37:38,266 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063254872] [2022-04-06 13:37:38,266 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1063254872] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:37:38,266 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 13:37:38,266 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-04-06 13:37:38,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074410761] [2022-04-06 13:37:38,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:37:38,267 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-04-06 13:37:38,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:37:38,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-04-06 13:37:38,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2022-04-06 13:37:38,267 INFO L87 Difference]: Start difference. First operand 289 states and 355 transitions. Second operand has 12 states, 12 states have (on average 4.916666666666667) internal successors, (59), 5 states have internal predecessors, (59), 3 states have call successors, (14), 10 states have call predecessors, (14), 4 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) [2022-04-06 13:37:38,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:37:38,536 INFO L93 Difference]: Finished difference Result 372 states and 441 transitions. [2022-04-06 13:37:38,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-04-06 13:37:38,537 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.916666666666667) internal successors, (59), 5 states have internal predecessors, (59), 3 states have call successors, (14), 10 states have call predecessors, (14), 4 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) Word has length 83 [2022-04-06 13:37:38,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:37:38,537 INFO L225 Difference]: With dead ends: 372 [2022-04-06 13:37:38,537 INFO L226 Difference]: Without dead ends: 286 [2022-04-06 13:37:38,538 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=104, Invalid=238, Unknown=0, NotChecked=0, Total=342 [2022-04-06 13:37:38,539 INFO L913 BasicCegarLoop]: 205 mSDtfsCounter, 171 mSDsluCounter, 475 mSDsCounter, 0 mSdLazyCounter, 436 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 680 SdHoareTripleChecker+Invalid, 512 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 436 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-04-06 13:37:38,539 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [174 Valid, 680 Invalid, 512 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 436 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-04-06 13:37:38,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2022-04-06 13:37:38,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 246. [2022-04-06 13:37:38,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 189 states have (on average 1.1904761904761905) internal successors, (225), 192 states have internal predecessors, (225), 29 states have call successors, (29), 26 states have call predecessors, (29), 27 states have return successors, (30), 28 states have call predecessors, (30), 27 states have call successors, (30) [2022-04-06 13:37:38,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 284 transitions. [2022-04-06 13:37:38,567 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 284 transitions. Word has length 83 [2022-04-06 13:37:38,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:37:38,567 INFO L478 AbstractCegarLoop]: Abstraction has 246 states and 284 transitions. [2022-04-06 13:37:38,567 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.916666666666667) internal successors, (59), 5 states have internal predecessors, (59), 3 states have call successors, (14), 10 states have call predecessors, (14), 4 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) [2022-04-06 13:37:38,567 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 284 transitions. [2022-04-06 13:37:38,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-04-06 13:37:38,568 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:37:38,568 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 13:37:38,568 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2022-04-06 13:37:38,568 INFO L403 AbstractCegarLoop]: === Iteration 76 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:37:38,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:37:38,568 INFO L85 PathProgramCache]: Analyzing trace with hash -2124626258, now seen corresponding path program 1 times [2022-04-06 13:37:38,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:37:38,568 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285097487] [2022-04-06 13:37:38,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:37:38,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:37:38,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:38,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:37:38,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:38,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:37:38,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:38,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 13:37:38,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:38,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-04-06 13:37:38,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:38,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-06 13:37:38,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:38,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 13:37:38,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:38,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-06 13:37:38,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:38,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-06 13:37:38,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:38,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 13:37:38,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:38,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-06 13:37:38,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:38,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-04-06 13:37:38,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:38,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-04-06 13:37:38,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:38,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 13:37:38,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:37:38,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285097487] [2022-04-06 13:37:38,799 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [285097487] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:37:38,799 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 13:37:38,799 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-04-06 13:37:38,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739290866] [2022-04-06 13:37:38,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:37:38,799 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-04-06 13:37:38,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:37:38,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-04-06 13:37:38,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2022-04-06 13:37:38,800 INFO L87 Difference]: Start difference. First operand 246 states and 284 transitions. Second operand has 18 states, 18 states have (on average 4.055555555555555) internal successors, (73), 7 states have internal predecessors, (73), 4 states have call successors, (14), 11 states have call predecessors, (14), 3 states have return successors, (12), 5 states have call predecessors, (12), 3 states have call successors, (12) [2022-04-06 13:37:39,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:37:39,352 INFO L93 Difference]: Finished difference Result 299 states and 341 transitions. [2022-04-06 13:37:39,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-04-06 13:37:39,353 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.055555555555555) internal successors, (73), 7 states have internal predecessors, (73), 4 states have call successors, (14), 11 states have call predecessors, (14), 3 states have return successors, (12), 5 states have call predecessors, (12), 3 states have call successors, (12) Word has length 99 [2022-04-06 13:37:39,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:37:39,353 INFO L225 Difference]: With dead ends: 299 [2022-04-06 13:37:39,353 INFO L226 Difference]: Without dead ends: 265 [2022-04-06 13:37:39,354 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=141, Invalid=671, Unknown=0, NotChecked=0, Total=812 [2022-04-06 13:37:39,354 INFO L913 BasicCegarLoop]: 156 mSDtfsCounter, 289 mSDsluCounter, 924 mSDsCounter, 0 mSdLazyCounter, 794 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 294 SdHoareTripleChecker+Valid, 1080 SdHoareTripleChecker+Invalid, 896 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 794 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-04-06 13:37:39,354 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [294 Valid, 1080 Invalid, 896 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 794 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-04-06 13:37:39,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2022-04-06 13:37:39,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 244. [2022-04-06 13:37:39,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244 states, 187 states have (on average 1.1657754010695187) internal successors, (218), 190 states have internal predecessors, (218), 29 states have call successors, (29), 26 states have call predecessors, (29), 27 states have return successors, (30), 28 states have call predecessors, (30), 27 states have call successors, (30) [2022-04-06 13:37:39,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 277 transitions. [2022-04-06 13:37:39,381 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 277 transitions. Word has length 99 [2022-04-06 13:37:39,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:37:39,382 INFO L478 AbstractCegarLoop]: Abstraction has 244 states and 277 transitions. [2022-04-06 13:37:39,382 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.055555555555555) internal successors, (73), 7 states have internal predecessors, (73), 4 states have call successors, (14), 11 states have call predecessors, (14), 3 states have return successors, (12), 5 states have call predecessors, (12), 3 states have call successors, (12) [2022-04-06 13:37:39,382 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 277 transitions. [2022-04-06 13:37:39,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-04-06 13:37:39,382 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:37:39,389 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 13:37:39,389 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2022-04-06 13:37:39,389 INFO L403 AbstractCegarLoop]: === Iteration 77 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:37:39,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:37:39,390 INFO L85 PathProgramCache]: Analyzing trace with hash 515298531, now seen corresponding path program 1 times [2022-04-06 13:37:39,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:37:39,390 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270292331] [2022-04-06 13:37:39,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:37:39,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:37:39,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:39,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:37:39,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:39,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:37:39,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:39,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 13:37:39,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:39,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-04-06 13:37:39,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:39,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-06 13:37:39,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:39,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 13:37:39,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:39,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-06 13:37:39,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:39,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-06 13:37:39,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:39,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 13:37:39,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:39,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-06 13:37:39,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:39,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-04-06 13:37:39,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:39,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-04-06 13:37:39,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:39,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 13:37:39,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:37:39,648 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270292331] [2022-04-06 13:37:39,648 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [270292331] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:37:39,648 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 13:37:39,648 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-04-06 13:37:39,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201611638] [2022-04-06 13:37:39,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:37:39,648 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-04-06 13:37:39,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:37:39,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-04-06 13:37:39,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=275, Unknown=0, NotChecked=0, Total=342 [2022-04-06 13:37:39,649 INFO L87 Difference]: Start difference. First operand 244 states and 277 transitions. Second operand has 19 states, 19 states have (on average 3.9473684210526314) internal successors, (75), 9 states have internal predecessors, (75), 5 states have call successors, (14), 11 states have call predecessors, (14), 4 states have return successors, (12), 5 states have call predecessors, (12), 4 states have call successors, (12) [2022-04-06 13:37:40,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:37:40,663 INFO L93 Difference]: Finished difference Result 528 states and 598 transitions. [2022-04-06 13:37:40,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-04-06 13:37:40,664 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.9473684210526314) internal successors, (75), 9 states have internal predecessors, (75), 5 states have call successors, (14), 11 states have call predecessors, (14), 4 states have return successors, (12), 5 states have call predecessors, (12), 4 states have call successors, (12) Word has length 101 [2022-04-06 13:37:40,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:37:40,665 INFO L225 Difference]: With dead ends: 528 [2022-04-06 13:37:40,665 INFO L226 Difference]: Without dead ends: 422 [2022-04-06 13:37:40,665 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 239 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=245, Invalid=1315, Unknown=0, NotChecked=0, Total=1560 [2022-04-06 13:37:40,666 INFO L913 BasicCegarLoop]: 252 mSDtfsCounter, 1004 mSDsluCounter, 699 mSDsCounter, 0 mSdLazyCounter, 2081 mSolverCounterSat, 393 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1005 SdHoareTripleChecker+Valid, 951 SdHoareTripleChecker+Invalid, 2474 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 393 IncrementalHoareTripleChecker+Valid, 2081 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-04-06 13:37:40,666 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1005 Valid, 951 Invalid, 2474 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [393 Valid, 2081 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-04-06 13:37:40,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 422 states. [2022-04-06 13:37:40,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 422 to 359. [2022-04-06 13:37:40,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 359 states, 277 states have (on average 1.1552346570397112) internal successors, (320), 282 states have internal predecessors, (320), 41 states have call successors, (41), 38 states have call predecessors, (41), 40 states have return successors, (43), 39 states have call predecessors, (43), 39 states have call successors, (43) [2022-04-06 13:37:40,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 404 transitions. [2022-04-06 13:37:40,713 INFO L78 Accepts]: Start accepts. Automaton has 359 states and 404 transitions. Word has length 101 [2022-04-06 13:37:40,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:37:40,713 INFO L478 AbstractCegarLoop]: Abstraction has 359 states and 404 transitions. [2022-04-06 13:37:40,713 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.9473684210526314) internal successors, (75), 9 states have internal predecessors, (75), 5 states have call successors, (14), 11 states have call predecessors, (14), 4 states have return successors, (12), 5 states have call predecessors, (12), 4 states have call successors, (12) [2022-04-06 13:37:40,713 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states and 404 transitions. [2022-04-06 13:37:40,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-04-06 13:37:40,716 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:37:40,717 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 13:37:40,717 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2022-04-06 13:37:40,717 INFO L403 AbstractCegarLoop]: === Iteration 78 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:37:40,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:37:40,717 INFO L85 PathProgramCache]: Analyzing trace with hash 1453830146, now seen corresponding path program 1 times [2022-04-06 13:37:40,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:37:40,717 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086315772] [2022-04-06 13:37:40,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:37:40,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:37:40,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:40,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:37:40,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:40,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:37:40,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:40,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 13:37:40,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:40,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-04-06 13:37:40,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:40,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-06 13:37:40,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:40,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 13:37:40,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:40,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-06 13:37:40,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:40,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-06 13:37:40,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:40,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 13:37:40,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:40,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-06 13:37:40,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:40,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-04-06 13:37:40,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:40,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-04-06 13:37:40,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:40,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 13:37:40,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:37:40,947 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086315772] [2022-04-06 13:37:40,947 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1086315772] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:37:40,947 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 13:37:40,947 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-04-06 13:37:40,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000458598] [2022-04-06 13:37:40,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:37:40,947 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-04-06 13:37:40,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:37:40,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-04-06 13:37:40,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2022-04-06 13:37:40,948 INFO L87 Difference]: Start difference. First operand 359 states and 404 transitions. Second operand has 17 states, 17 states have (on average 4.411764705882353) internal successors, (75), 6 states have internal predecessors, (75), 3 states have call successors, (14), 11 states have call predecessors, (14), 3 states have return successors, (12), 4 states have call predecessors, (12), 2 states have call successors, (12) [2022-04-06 13:37:41,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:37:41,393 INFO L93 Difference]: Finished difference Result 377 states and 423 transitions. [2022-04-06 13:37:41,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-04-06 13:37:41,394 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 4.411764705882353) internal successors, (75), 6 states have internal predecessors, (75), 3 states have call successors, (14), 11 states have call predecessors, (14), 3 states have return successors, (12), 4 states have call predecessors, (12), 2 states have call successors, (12) Word has length 101 [2022-04-06 13:37:41,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:37:41,394 INFO L225 Difference]: With dead ends: 377 [2022-04-06 13:37:41,394 INFO L226 Difference]: Without dead ends: 274 [2022-04-06 13:37:41,395 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=76, Invalid=266, Unknown=0, NotChecked=0, Total=342 [2022-04-06 13:37:41,395 INFO L913 BasicCegarLoop]: 160 mSDtfsCounter, 59 mSDsluCounter, 930 mSDsCounter, 0 mSdLazyCounter, 987 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 1090 SdHoareTripleChecker+Invalid, 1021 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 987 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-04-06 13:37:41,395 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [60 Valid, 1090 Invalid, 1021 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 987 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-04-06 13:37:41,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2022-04-06 13:37:41,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 146. [2022-04-06 13:37:41,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 112 states have (on average 1.125) internal successors, (126), 114 states have internal predecessors, (126), 17 states have call successors, (17), 17 states have call predecessors, (17), 16 states have return successors, (16), 15 states have call predecessors, (16), 15 states have call successors, (16) [2022-04-06 13:37:41,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 159 transitions. [2022-04-06 13:37:41,414 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 159 transitions. Word has length 101 [2022-04-06 13:37:41,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:37:41,414 INFO L478 AbstractCegarLoop]: Abstraction has 146 states and 159 transitions. [2022-04-06 13:37:41,414 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 4.411764705882353) internal successors, (75), 6 states have internal predecessors, (75), 3 states have call successors, (14), 11 states have call predecessors, (14), 3 states have return successors, (12), 4 states have call predecessors, (12), 2 states have call successors, (12) [2022-04-06 13:37:41,414 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 159 transitions. [2022-04-06 13:37:41,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-04-06 13:37:41,415 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:37:41,415 INFO L499 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 13:37:41,415 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2022-04-06 13:37:41,415 INFO L403 AbstractCegarLoop]: === Iteration 79 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:37:41,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:37:41,415 INFO L85 PathProgramCache]: Analyzing trace with hash 954691984, now seen corresponding path program 1 times [2022-04-06 13:37:41,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:37:41,415 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736448608] [2022-04-06 13:37:41,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:37:41,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:37:41,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:41,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:37:41,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:41,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:37:41,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:41,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 13:37:41,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:41,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-04-06 13:37:41,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:41,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-06 13:37:41,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:41,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-04-06 13:37:41,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:41,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-06 13:37:41,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:41,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-06 13:37:41,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:41,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 13:37:41,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:41,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-06 13:37:41,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:41,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-04-06 13:37:41,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:41,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-04-06 13:37:41,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:41,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-04-06 13:37:41,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:41,558 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-04-06 13:37:41,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:37:41,558 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736448608] [2022-04-06 13:37:41,558 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [736448608] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:37:41,558 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 13:37:41,558 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-04-06 13:37:41,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056834517] [2022-04-06 13:37:41,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:37:41,559 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-04-06 13:37:41,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:37:41,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-04-06 13:37:41,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=81, Unknown=0, NotChecked=0, Total=132 [2022-04-06 13:37:41,559 INFO L87 Difference]: Start difference. First operand 146 states and 159 transitions. Second operand has 12 states, 12 states have (on average 6.75) internal successors, (81), 3 states have internal predecessors, (81), 3 states have call successors, (15), 11 states have call predecessors, (15), 2 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-04-06 13:37:41,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:37:41,744 INFO L93 Difference]: Finished difference Result 192 states and 212 transitions. [2022-04-06 13:37:41,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-04-06 13:37:41,745 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.75) internal successors, (81), 3 states have internal predecessors, (81), 3 states have call successors, (15), 11 states have call predecessors, (15), 2 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 116 [2022-04-06 13:37:41,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:37:41,745 INFO L225 Difference]: With dead ends: 192 [2022-04-06 13:37:41,745 INFO L226 Difference]: Without dead ends: 158 [2022-04-06 13:37:41,745 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=75, Invalid=107, Unknown=0, NotChecked=0, Total=182 [2022-04-06 13:37:41,746 INFO L913 BasicCegarLoop]: 125 mSDtfsCounter, 115 mSDsluCounter, 251 mSDsCounter, 0 mSdLazyCounter, 300 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 376 SdHoareTripleChecker+Invalid, 368 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 300 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-06 13:37:41,746 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [117 Valid, 376 Invalid, 368 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 300 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-06 13:37:41,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2022-04-06 13:37:41,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 152. [2022-04-06 13:37:41,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 117 states have (on average 1.1196581196581197) internal successors, (131), 119 states have internal predecessors, (131), 18 states have call successors, (18), 17 states have call predecessors, (18), 16 states have return successors, (17), 16 states have call predecessors, (17), 16 states have call successors, (17) [2022-04-06 13:37:41,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 166 transitions. [2022-04-06 13:37:41,766 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 166 transitions. Word has length 116 [2022-04-06 13:37:41,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:37:41,766 INFO L478 AbstractCegarLoop]: Abstraction has 152 states and 166 transitions. [2022-04-06 13:37:41,766 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.75) internal successors, (81), 3 states have internal predecessors, (81), 3 states have call successors, (15), 11 states have call predecessors, (15), 2 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-04-06 13:37:41,766 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 166 transitions. [2022-04-06 13:37:41,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-04-06 13:37:41,766 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:37:41,766 INFO L499 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 13:37:41,767 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2022-04-06 13:37:41,767 INFO L403 AbstractCegarLoop]: === Iteration 80 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:37:41,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:37:41,767 INFO L85 PathProgramCache]: Analyzing trace with hash 1647793681, now seen corresponding path program 1 times [2022-04-06 13:37:41,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:37:41,767 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077992237] [2022-04-06 13:37:41,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:37:41,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:37:41,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:41,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:37:41,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:41,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:37:41,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:41,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 13:37:41,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:41,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-04-06 13:37:41,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:41,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-06 13:37:41,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:41,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-04-06 13:37:41,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:41,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-06 13:37:41,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:41,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-06 13:37:41,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:41,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 13:37:41,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:41,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-06 13:37:41,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:41,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-04-06 13:37:41,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:41,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-04-06 13:37:41,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:41,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-04-06 13:37:41,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:41,949 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-04-06 13:37:41,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:37:41,949 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077992237] [2022-04-06 13:37:41,949 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2077992237] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:37:41,949 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 13:37:41,949 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-04-06 13:37:41,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92451755] [2022-04-06 13:37:41,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:37:41,950 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-04-06 13:37:41,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:37:41,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-04-06 13:37:41,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2022-04-06 13:37:41,950 INFO L87 Difference]: Start difference. First operand 152 states and 166 transitions. Second operand has 18 states, 18 states have (on average 4.5) internal successors, (81), 8 states have internal predecessors, (81), 5 states have call successors, (15), 11 states have call predecessors, (15), 3 states have return successors, (13), 6 states have call predecessors, (13), 4 states have call successors, (13) [2022-04-06 13:37:42,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:37:42,511 INFO L93 Difference]: Finished difference Result 292 states and 319 transitions. [2022-04-06 13:37:42,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-04-06 13:37:42,511 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.5) internal successors, (81), 8 states have internal predecessors, (81), 5 states have call successors, (15), 11 states have call predecessors, (15), 3 states have return successors, (13), 6 states have call predecessors, (13), 4 states have call successors, (13) Word has length 116 [2022-04-06 13:37:42,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:37:42,512 INFO L225 Difference]: With dead ends: 292 [2022-04-06 13:37:42,512 INFO L226 Difference]: Without dead ends: 152 [2022-04-06 13:37:42,512 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 229 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=225, Invalid=1181, Unknown=0, NotChecked=0, Total=1406 [2022-04-06 13:37:42,512 INFO L913 BasicCegarLoop]: 107 mSDtfsCounter, 256 mSDsluCounter, 302 mSDsCounter, 0 mSdLazyCounter, 1176 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 257 SdHoareTripleChecker+Valid, 409 SdHoareTripleChecker+Invalid, 1266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 1176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-04-06 13:37:42,512 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [257 Valid, 409 Invalid, 1266 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 1176 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-04-06 13:37:42,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2022-04-06 13:37:42,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 152. [2022-04-06 13:37:42,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 117 states have (on average 1.1111111111111112) internal successors, (130), 119 states have internal predecessors, (130), 18 states have call successors, (18), 17 states have call predecessors, (18), 16 states have return successors, (17), 16 states have call predecessors, (17), 16 states have call successors, (17) [2022-04-06 13:37:42,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 165 transitions. [2022-04-06 13:37:42,532 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 165 transitions. Word has length 116 [2022-04-06 13:37:42,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:37:42,532 INFO L478 AbstractCegarLoop]: Abstraction has 152 states and 165 transitions. [2022-04-06 13:37:42,532 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.5) internal successors, (81), 8 states have internal predecessors, (81), 5 states have call successors, (15), 11 states have call predecessors, (15), 3 states have return successors, (13), 6 states have call predecessors, (13), 4 states have call successors, (13) [2022-04-06 13:37:42,533 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 165 transitions. [2022-04-06 13:37:42,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-04-06 13:37:42,533 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:37:42,533 INFO L499 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 13:37:42,533 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2022-04-06 13:37:42,533 INFO L403 AbstractCegarLoop]: === Iteration 81 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:37:42,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:37:42,533 INFO L85 PathProgramCache]: Analyzing trace with hash 2114082993, now seen corresponding path program 1 times [2022-04-06 13:37:42,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:37:42,534 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35020507] [2022-04-06 13:37:42,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:37:42,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:37:42,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:42,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:37:42,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:42,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:37:42,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:42,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 13:37:42,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:42,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-04-06 13:37:42,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:42,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-06 13:37:42,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:42,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-04-06 13:37:42,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:42,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-06 13:37:42,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:42,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-06 13:37:42,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:42,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 13:37:42,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:42,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-06 13:37:42,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:42,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-04-06 13:37:42,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:42,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-04-06 13:37:42,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:42,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-04-06 13:37:42,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:42,717 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-04-06 13:37:42,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:37:42,717 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35020507] [2022-04-06 13:37:42,717 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [35020507] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:37:42,717 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 13:37:42,717 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-04-06 13:37:42,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969875237] [2022-04-06 13:37:42,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:37:42,718 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-04-06 13:37:42,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:37:42,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-04-06 13:37:42,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=81, Unknown=0, NotChecked=0, Total=132 [2022-04-06 13:37:42,718 INFO L87 Difference]: Start difference. First operand 152 states and 165 transitions. Second operand has 12 states, 12 states have (on average 6.75) internal successors, (81), 3 states have internal predecessors, (81), 3 states have call successors, (15), 11 states have call predecessors, (15), 2 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-04-06 13:37:43,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:37:43,020 INFO L93 Difference]: Finished difference Result 191 states and 206 transitions. [2022-04-06 13:37:43,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-04-06 13:37:43,020 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.75) internal successors, (81), 3 states have internal predecessors, (81), 3 states have call successors, (15), 11 states have call predecessors, (15), 2 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 116 [2022-04-06 13:37:43,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:37:43,021 INFO L225 Difference]: With dead ends: 191 [2022-04-06 13:37:43,021 INFO L226 Difference]: Without dead ends: 158 [2022-04-06 13:37:43,021 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=75, Invalid=107, Unknown=0, NotChecked=0, Total=182 [2022-04-06 13:37:43,021 INFO L913 BasicCegarLoop]: 123 mSDtfsCounter, 51 mSDsluCounter, 266 mSDsCounter, 0 mSdLazyCounter, 358 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 389 SdHoareTripleChecker+Invalid, 384 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 358 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-04-06 13:37:43,021 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [53 Valid, 389 Invalid, 384 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 358 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-04-06 13:37:43,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2022-04-06 13:37:43,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 152. [2022-04-06 13:37:43,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 117 states have (on average 1.0940170940170941) internal successors, (128), 119 states have internal predecessors, (128), 18 states have call successors, (18), 17 states have call predecessors, (18), 16 states have return successors, (17), 16 states have call predecessors, (17), 16 states have call successors, (17) [2022-04-06 13:37:43,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 163 transitions. [2022-04-06 13:37:43,041 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 163 transitions. Word has length 116 [2022-04-06 13:37:43,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:37:43,042 INFO L478 AbstractCegarLoop]: Abstraction has 152 states and 163 transitions. [2022-04-06 13:37:43,042 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.75) internal successors, (81), 3 states have internal predecessors, (81), 3 states have call successors, (15), 11 states have call predecessors, (15), 2 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-04-06 13:37:43,042 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 163 transitions. [2022-04-06 13:37:43,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-04-06 13:37:43,042 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:37:43,042 INFO L499 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 13:37:43,042 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2022-04-06 13:37:43,042 INFO L403 AbstractCegarLoop]: === Iteration 82 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:37:43,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:37:43,043 INFO L85 PathProgramCache]: Analyzing trace with hash 1707014418, now seen corresponding path program 1 times [2022-04-06 13:37:43,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:37:43,043 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101651456] [2022-04-06 13:37:43,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:37:43,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:37:43,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:43,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:37:43,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:43,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:37:43,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:43,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 13:37:43,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:43,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-04-06 13:37:43,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:43,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-06 13:37:43,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:43,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-04-06 13:37:43,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:43,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-06 13:37:43,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:43,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-06 13:37:43,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:43,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 13:37:43,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:43,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-06 13:37:43,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:43,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-04-06 13:37:43,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:43,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-04-06 13:37:43,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:43,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-04-06 13:37:43,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:43,292 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-04-06 13:37:43,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:37:43,292 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101651456] [2022-04-06 13:37:43,292 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1101651456] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:37:43,292 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 13:37:43,292 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-04-06 13:37:43,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222850335] [2022-04-06 13:37:43,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:37:43,293 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-04-06 13:37:43,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:37:43,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-04-06 13:37:43,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=311, Unknown=0, NotChecked=0, Total=380 [2022-04-06 13:37:43,293 INFO L87 Difference]: Start difference. First operand 152 states and 163 transitions. Second operand has 20 states, 20 states have (on average 4.05) internal successors, (81), 9 states have internal predecessors, (81), 5 states have call successors, (15), 11 states have call predecessors, (15), 3 states have return successors, (13), 6 states have call predecessors, (13), 4 states have call successors, (13) [2022-04-06 13:37:43,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:37:43,757 INFO L93 Difference]: Finished difference Result 152 states and 163 transitions. [2022-04-06 13:37:43,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-04-06 13:37:43,757 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 4.05) internal successors, (81), 9 states have internal predecessors, (81), 5 states have call successors, (15), 11 states have call predecessors, (15), 3 states have return successors, (13), 6 states have call predecessors, (13), 4 states have call successors, (13) Word has length 116 [2022-04-06 13:37:43,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:37:43,758 INFO L225 Difference]: With dead ends: 152 [2022-04-06 13:37:43,758 INFO L226 Difference]: Without dead ends: 0 [2022-04-06 13:37:43,758 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=159, Invalid=833, Unknown=0, NotChecked=0, Total=992 [2022-04-06 13:37:43,759 INFO L913 BasicCegarLoop]: 95 mSDtfsCounter, 304 mSDsluCounter, 226 mSDsCounter, 0 mSdLazyCounter, 942 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 304 SdHoareTripleChecker+Valid, 321 SdHoareTripleChecker+Invalid, 1069 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 942 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-04-06 13:37:43,759 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [304 Valid, 321 Invalid, 1069 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 942 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-04-06 13:37:43,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-04-06 13:37:43,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-04-06 13:37:43,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-06 13:37:43,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-04-06 13:37:43,759 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 116 [2022-04-06 13:37:43,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:37:43,759 INFO L478 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-04-06 13:37:43,759 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 4.05) internal successors, (81), 9 states have internal predecessors, (81), 5 states have call successors, (15), 11 states have call predecessors, (15), 3 states have return successors, (13), 6 states have call predecessors, (13), 4 states have call successors, (13) [2022-04-06 13:37:43,760 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-04-06 13:37:43,760 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-06 13:37:43,761 INFO L788 garLoopResultBuilder]: Registering result SAFE for location errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-04-06 13:37:43,762 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2022-04-06 13:37:43,763 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.