/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCTransformed.xml -s ../../../trunk/examples/settings/loopacceleration/qvasr/qvasr_64.epf -i ../../../trunk/examples/svcomp/ntdrivers-simplified/cdaudio_simpl1.cil-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-7968f31 [2022-03-17 23:14:47,125 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-17 23:14:47,126 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-17 23:14:47,173 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-03-17 23:14:47,177 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-03-17 23:14:47,178 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-03-17 23:14:47,182 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-03-17 23:14:47,186 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-03-17 23:14:47,187 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-03-17 23:14:47,191 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-03-17 23:14:47,192 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-03-17 23:14:47,192 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-03-17 23:14:47,193 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-03-17 23:14:47,194 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-03-17 23:14:47,195 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-03-17 23:14:47,196 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-03-17 23:14:47,196 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-03-17 23:14:47,197 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-03-17 23:14:47,200 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-03-17 23:14:47,204 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-03-17 23:14:47,205 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-03-17 23:14:47,206 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-03-17 23:14:47,207 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-03-17 23:14:47,207 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-03-17 23:14:47,208 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-03-17 23:14:47,213 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-03-17 23:14:47,213 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-03-17 23:14:47,213 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-03-17 23:14:47,214 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-03-17 23:14:47,214 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-03-17 23:14:47,215 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2022-03-17 23:14:47,219 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-17 23:14:47,219 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-17 23:14:47,220 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-17 23:14:47,221 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/loopacceleration/qvasr/qvasr_64.epf [2022-03-17 23:14:47,242 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-17 23:14:47,242 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-17 23:14:47,243 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-03-17 23:14:47,243 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-03-17 23:14:47,244 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-03-17 23:14:47,244 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-03-17 23:14:47,244 INFO L138 SettingsManager]: * Use SBE=true [2022-03-17 23:14:47,244 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-17 23:14:47,244 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-17 23:14:47,244 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-17 23:14:47,244 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-17 23:14:47,244 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-17 23:14:47,244 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-17 23:14:47,244 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-17 23:14:47,244 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-17 23:14:47,244 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-17 23:14:47,245 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-17 23:14:47,245 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-17 23:14:47,245 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-17 23:14:47,245 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-17 23:14:47,245 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-17 23:14:47,245 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-03-17 23:14:47,245 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-03-17 23:14:47,245 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-17 23:14:47,245 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-03-17 23:14:47,245 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-17 23:14:47,245 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-03-17 23:14:47,246 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-03-17 23:14:47,246 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-03-17 23:14:47,246 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-03-17 23:14:47,430 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-17 23:14:47,453 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-17 23:14:47,455 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-17 23:14:47,455 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-17 23:14:47,457 INFO L275 PluginConnector]: CDTParser initialized [2022-03-17 23:14:47,458 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ntdrivers-simplified/cdaudio_simpl1.cil-1.c [2022-03-17 23:14:47,501 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/05e91d773/6affdf132d934313a1b19a5753f3a5f4/FLAG1863f2a4c [2022-03-17 23:14:47,969 INFO L306 CDTParser]: Found 1 translation units. [2022-03-17 23:14:47,969 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ntdrivers-simplified/cdaudio_simpl1.cil-1.c [2022-03-17 23:14:47,989 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/05e91d773/6affdf132d934313a1b19a5753f3a5f4/FLAG1863f2a4c [2022-03-17 23:14:48,008 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/05e91d773/6affdf132d934313a1b19a5753f3a5f4 [2022-03-17 23:14:48,009 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-17 23:14:48,011 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-03-17 23:14:48,013 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-17 23:14:48,013 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-17 23:14:48,016 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-17 23:14:48,016 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 11:14:48" (1/1) ... [2022-03-17 23:14:48,017 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@368ea072 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 11:14:48, skipping insertion in model container [2022-03-17 23:14:48,017 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 11:14:48" (1/1) ... [2022-03-17 23:14:48,022 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-17 23:14:48,078 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-17 23:14:48,214 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ntdrivers-simplified/cdaudio_simpl1.cil-1.c[2074,2087] [2022-03-17 23:14:48,304 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-17 23:14:48,310 INFO L203 MainTranslator]: Completed pre-run [2022-03-17 23:14:48,331 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ntdrivers-simplified/cdaudio_simpl1.cil-1.c[2074,2087] [2022-03-17 23:14:48,385 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-17 23:14:48,398 INFO L208 MainTranslator]: Completed translation [2022-03-17 23:14:48,399 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 11:14:48 WrapperNode [2022-03-17 23:14:48,399 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-17 23:14:48,401 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-17 23:14:48,401 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-17 23:14:48,401 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-17 23:14:48,408 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 11:14:48" (1/1) ... [2022-03-17 23:14:48,408 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 11:14:48" (1/1) ... [2022-03-17 23:14:48,421 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 11:14:48" (1/1) ... [2022-03-17 23:14:48,421 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 11:14:48" (1/1) ... [2022-03-17 23:14:48,447 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 11:14:48" (1/1) ... [2022-03-17 23:14:48,475 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 11:14:48" (1/1) ... [2022-03-17 23:14:48,478 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 11:14:48" (1/1) ... [2022-03-17 23:14:48,489 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-17 23:14:48,489 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-17 23:14:48,490 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-17 23:14:48,490 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-17 23:14:48,492 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 11:14:48" (1/1) ... [2022-03-17 23:14:48,511 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-17 23:14:48,529 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-17 23:14:48,560 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-03-17 23:14:48,596 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-03-17 23:14:48,623 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-03-17 23:14:48,623 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-17 23:14:48,623 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-03-17 23:14:48,623 INFO L138 BoogieDeclarations]: Found implementation of procedure errorFn [2022-03-17 23:14:48,624 INFO L138 BoogieDeclarations]: Found implementation of procedure _BLAST_init [2022-03-17 23:14:48,624 INFO L138 BoogieDeclarations]: Found implementation of procedure SendSrbSynchronous [2022-03-17 23:14:48,624 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioSignalCompletion [2022-03-17 23:14:48,624 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioStartDevice [2022-03-17 23:14:48,626 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioPnp [2022-03-17 23:14:48,626 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioDeviceControl [2022-03-17 23:14:48,626 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioSendToNextDriver [2022-03-17 23:14:48,626 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioIsPlayActive [2022-03-17 23:14:48,626 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudio535DeviceControl [2022-03-17 23:14:48,626 INFO L138 BoogieDeclarations]: Found implementation of procedure AG_SetStatusAndReturn [2022-03-17 23:14:48,626 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudio435DeviceControl [2022-03-17 23:14:48,626 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioAtapiDeviceControl [2022-03-17 23:14:48,626 INFO L138 BoogieDeclarations]: Found implementation of procedure HpCdrProcessLastSession [2022-03-17 23:14:48,626 INFO L138 BoogieDeclarations]: Found implementation of procedure HPCdrCompletion [2022-03-17 23:14:48,626 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioHPCdrDeviceControl [2022-03-17 23:14:48,626 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioForwardIrpSynchronous [2022-03-17 23:14:48,626 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioUnload [2022-03-17 23:14:48,626 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioPower [2022-03-17 23:14:48,627 INFO L138 BoogieDeclarations]: Found implementation of procedure stub_driver_init [2022-03-17 23:14:48,627 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-03-17 23:14:48,627 INFO L138 BoogieDeclarations]: Found implementation of procedure stubMoreProcessingRequired [2022-03-17 23:14:48,627 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCallDriver [2022-03-17 23:14:48,627 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCompleteRequest [2022-03-17 23:14:48,627 INFO L138 BoogieDeclarations]: Found implementation of procedure KeSetEvent [2022-03-17 23:14:48,627 INFO L138 BoogieDeclarations]: Found implementation of procedure KeWaitForSingleObject [2022-03-17 23:14:48,627 INFO L138 BoogieDeclarations]: Found implementation of procedure PoCallDriver [2022-03-17 23:14:48,627 INFO L138 BoogieDeclarations]: Found implementation of procedure ZwClose [2022-03-17 23:14:48,627 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-03-17 23:14:48,627 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-03-17 23:14:48,627 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-03-17 23:14:48,627 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-17 23:14:48,627 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2022-03-17 23:14:48,627 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-03-17 23:14:48,627 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2022-03-17 23:14:48,627 INFO L130 BoogieDeclarations]: Found specification of procedure SendSrbSynchronous [2022-03-17 23:14:48,628 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioSignalCompletion [2022-03-17 23:14:48,628 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioStartDevice [2022-03-17 23:14:48,628 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioPnp [2022-03-17 23:14:48,628 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioDeviceControl [2022-03-17 23:14:48,628 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioSendToNextDriver [2022-03-17 23:14:48,628 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioIsPlayActive [2022-03-17 23:14:48,628 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudio535DeviceControl [2022-03-17 23:14:48,628 INFO L130 BoogieDeclarations]: Found specification of procedure AG_SetStatusAndReturn [2022-03-17 23:14:48,628 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudio435DeviceControl [2022-03-17 23:14:48,628 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioAtapiDeviceControl [2022-03-17 23:14:48,628 INFO L130 BoogieDeclarations]: Found specification of procedure HPCdrCompletion [2022-03-17 23:14:48,628 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioHPCdrDeviceControl [2022-03-17 23:14:48,628 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioForwardIrpSynchronous [2022-03-17 23:14:48,628 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioPower [2022-03-17 23:14:48,629 INFO L130 BoogieDeclarations]: Found specification of procedure IofCallDriver [2022-03-17 23:14:48,629 INFO L130 BoogieDeclarations]: Found specification of procedure KeSetEvent [2022-03-17 23:14:48,629 INFO L130 BoogieDeclarations]: Found specification of procedure KeWaitForSingleObject [2022-03-17 23:14:48,629 INFO L130 BoogieDeclarations]: Found specification of procedure PoCallDriver [2022-03-17 23:14:48,629 INFO L130 BoogieDeclarations]: Found specification of procedure ZwClose [2022-03-17 23:14:48,629 INFO L130 BoogieDeclarations]: Found specification of procedure IofCompleteRequest [2022-03-17 23:14:48,630 INFO L130 BoogieDeclarations]: Found specification of procedure errorFn [2022-03-17 23:14:48,630 INFO L130 BoogieDeclarations]: Found specification of procedure _BLAST_init [2022-03-17 23:14:48,630 INFO L130 BoogieDeclarations]: Found specification of procedure HpCdrProcessLastSession [2022-03-17 23:14:48,630 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioUnload [2022-03-17 23:14:48,630 INFO L130 BoogieDeclarations]: Found specification of procedure stub_driver_init [2022-03-17 23:14:48,630 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-03-17 23:14:48,630 INFO L130 BoogieDeclarations]: Found specification of procedure stubMoreProcessingRequired [2022-03-17 23:14:48,630 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-03-17 23:14:48,630 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-17 23:14:48,631 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-17 23:14:48,631 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-17 23:14:48,631 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-17 23:14:48,631 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-17 23:14:48,849 INFO L234 CfgBuilder]: Building ICFG [2022-03-17 23:14:48,850 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-17 23:14:48,991 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-17 23:14:49,057 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume !false; [2022-03-17 23:14:49,058 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##14: assume false; [2022-03-17 23:14:49,063 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-17 23:14:49,090 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##18: assume !false; [2022-03-17 23:14:49,091 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##17: assume false; [2022-03-17 23:14:49,108 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-17 23:14:49,118 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##16: assume !false; [2022-03-17 23:14:49,118 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume false; [2022-03-17 23:14:49,159 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-17 23:14:49,201 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##6: assume !false; [2022-03-17 23:14:49,201 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L305: #res := 0; [2022-03-17 23:14:49,201 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##5: assume false; [2022-03-17 23:14:49,207 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-17 23:14:49,303 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##21: assume false; [2022-03-17 23:14:49,303 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##22: assume !false; [2022-03-17 23:14:49,304 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-17 23:14:49,321 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##21: assume !false; [2022-03-17 23:14:49,321 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##20: assume false; [2022-03-17 23:14:49,341 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-17 23:14:49,351 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##10: assume !false; [2022-03-17 23:14:49,351 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##9: assume false; [2022-03-17 23:14:49,353 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-17 23:14:49,462 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##26: assume !false; [2022-03-17 23:14:49,463 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##25: assume false; [2022-03-17 23:14:49,470 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-17 23:14:49,473 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-17 23:14:49,474 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-17 23:14:49,494 INFO L275 CfgBuilder]: Performing block encoding [2022-03-17 23:14:49,506 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-17 23:14:49,506 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-03-17 23:14:49,509 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.03 11:14:49 BoogieIcfgContainer [2022-03-17 23:14:49,509 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-17 23:14:49,510 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-03-17 23:14:49,510 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-03-17 23:14:49,511 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-03-17 23:14:49,513 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.03 11:14:49" (1/1) ... [2022-03-17 23:14:49,588 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 17.03 11:14:49 BasicIcfg [2022-03-17 23:14:49,588 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-03-17 23:14:49,589 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-17 23:14:49,589 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-17 23:14:49,591 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-17 23:14:49,591 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.03 11:14:48" (1/4) ... [2022-03-17 23:14:49,591 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b8169d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 11:14:49, skipping insertion in model container [2022-03-17 23:14:49,592 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 11:14:48" (2/4) ... [2022-03-17 23:14:49,592 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b8169d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 11:14:49, skipping insertion in model container [2022-03-17 23:14:49,592 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.03 11:14:49" (3/4) ... [2022-03-17 23:14:49,592 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b8169d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.03 11:14:49, skipping insertion in model container [2022-03-17 23:14:49,592 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 17.03 11:14:49" (4/4) ... [2022-03-17 23:14:49,593 INFO L111 eAbstractionObserver]: Analyzing ICFG cdaudio_simpl1.cil-1.cqvasr [2022-03-17 23:14:49,596 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-03-17 23:14:49,596 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-17 23:14:49,625 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-17 23:14:49,629 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 [2022-03-17 23:14:49,629 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-03-17 23:14:49,647 INFO L276 IsEmpty]: Start isEmpty. Operand has 517 states, 383 states have (on average 1.4882506527415145) internal successors, (570), 404 states have internal predecessors, (570), 103 states have call successors, (103), 29 states have call predecessors, (103), 29 states have return successors, (103), 98 states have call predecessors, (103), 103 states have call successors, (103) [2022-03-17 23:14:49,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-17 23:14:49,650 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 23:14:49,651 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 23:14:49,651 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 23:14:49,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 23:14:49,654 INFO L85 PathProgramCache]: Analyzing trace with hash 784814983, now seen corresponding path program 1 times [2022-03-17 23:14:49,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 23:14:49,660 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255298878] [2022-03-17 23:14:49,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 23:14:49,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 23:14:49,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:14:49,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 23:14:49,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:14:49,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-17 23:14:49,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:14:49,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 23:14:49,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 23:14:49,996 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255298878] [2022-03-17 23:14:49,996 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [255298878] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 23:14:49,996 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 23:14:49,996 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-17 23:14:49,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525605831] [2022-03-17 23:14:49,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 23:14:50,000 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-17 23:14:50,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 23:14:50,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-17 23:14:50,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-03-17 23:14:50,023 INFO L87 Difference]: Start difference. First operand has 517 states, 383 states have (on average 1.4882506527415145) internal successors, (570), 404 states have internal predecessors, (570), 103 states have call successors, (103), 29 states have call predecessors, (103), 29 states have return successors, (103), 98 states have call predecessors, (103), 103 states have call successors, (103) Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 3 states have internal predecessors, (14), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-03-17 23:14:51,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 23:14:51,946 INFO L93 Difference]: Finished difference Result 1047 states and 1683 transitions. [2022-03-17 23:14:51,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-17 23:14:51,948 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 3 states have internal predecessors, (14), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 20 [2022-03-17 23:14:51,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 23:14:51,959 INFO L225 Difference]: With dead ends: 1047 [2022-03-17 23:14:51,960 INFO L226 Difference]: Without dead ends: 665 [2022-03-17 23:14:51,965 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-03-17 23:14:51,967 INFO L912 BasicCegarLoop]: 741 mSDtfsCounter, 399 mSDsluCounter, 272 mSDsCounter, 0 mSdLazyCounter, 1595 mSolverCounterSat, 158 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 400 SdHoareTripleChecker+Valid, 1013 SdHoareTripleChecker+Invalid, 1753 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 158 IncrementalHoareTripleChecker+Valid, 1595 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-03-17 23:14:51,967 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [400 Valid, 1013 Invalid, 1753 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [158 Valid, 1595 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-03-17 23:14:51,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 665 states. [2022-03-17 23:14:52,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 665 to 509. [2022-03-17 23:14:52,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 509 states, 378 states have (on average 1.4576719576719577) internal successors, (551), 397 states have internal predecessors, (551), 103 states have call successors, (103), 29 states have call predecessors, (103), 27 states have return successors, (86), 86 states have call predecessors, (86), 86 states have call successors, (86) [2022-03-17 23:14:52,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 509 states to 509 states and 740 transitions. [2022-03-17 23:14:52,041 INFO L78 Accepts]: Start accepts. Automaton has 509 states and 740 transitions. Word has length 20 [2022-03-17 23:14:52,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 23:14:52,042 INFO L478 AbstractCegarLoop]: Abstraction has 509 states and 740 transitions. [2022-03-17 23:14:52,042 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 3 states have internal predecessors, (14), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-03-17 23:14:52,042 INFO L276 IsEmpty]: Start isEmpty. Operand 509 states and 740 transitions. [2022-03-17 23:14:52,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-03-17 23:14:52,043 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 23:14:52,043 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 23:14:52,043 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-17 23:14:52,043 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 23:14:52,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 23:14:52,044 INFO L85 PathProgramCache]: Analyzing trace with hash -30338372, now seen corresponding path program 1 times [2022-03-17 23:14:52,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 23:14:52,044 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201889819] [2022-03-17 23:14:52,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 23:14:52,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 23:14:52,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:14:52,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 23:14:52,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:14:52,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-17 23:14:52,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:14:52,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-17 23:14:52,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:14:52,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 23:14:52,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 23:14:52,170 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201889819] [2022-03-17 23:14:52,170 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1201889819] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 23:14:52,170 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 23:14:52,170 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-17 23:14:52,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378244771] [2022-03-17 23:14:52,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 23:14:52,171 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-17 23:14:52,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 23:14:52,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-17 23:14:52,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-03-17 23:14:52,172 INFO L87 Difference]: Start difference. First operand 509 states and 740 transitions. Second operand has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 3 states have internal predecessors, (16), 3 states have call successors, (6), 6 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-03-17 23:14:53,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 23:14:53,496 INFO L93 Difference]: Finished difference Result 967 states and 1429 transitions. [2022-03-17 23:14:53,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-17 23:14:53,496 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 3 states have internal predecessors, (16), 3 states have call successors, (6), 6 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 25 [2022-03-17 23:14:53,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 23:14:53,502 INFO L225 Difference]: With dead ends: 967 [2022-03-17 23:14:53,502 INFO L226 Difference]: Without dead ends: 846 [2022-03-17 23:14:53,503 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-03-17 23:14:53,504 INFO L912 BasicCegarLoop]: 853 mSDtfsCounter, 1891 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 929 mSolverCounterSat, 586 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1895 SdHoareTripleChecker+Valid, 1025 SdHoareTripleChecker+Invalid, 1515 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 586 IncrementalHoareTripleChecker+Valid, 929 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-03-17 23:14:53,504 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [1895 Valid, 1025 Invalid, 1515 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [586 Valid, 929 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-03-17 23:14:53,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 846 states. [2022-03-17 23:14:53,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 846 to 664. [2022-03-17 23:14:53,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 664 states, 502 states have (on average 1.408366533864542) internal successors, (707), 510 states have internal predecessors, (707), 112 states have call successors, (112), 40 states have call predecessors, (112), 49 states have return successors, (145), 119 states have call predecessors, (145), 99 states have call successors, (145) [2022-03-17 23:14:53,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 664 states to 664 states and 964 transitions. [2022-03-17 23:14:53,588 INFO L78 Accepts]: Start accepts. Automaton has 664 states and 964 transitions. Word has length 25 [2022-03-17 23:14:53,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 23:14:53,589 INFO L478 AbstractCegarLoop]: Abstraction has 664 states and 964 transitions. [2022-03-17 23:14:53,589 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 3 states have internal predecessors, (16), 3 states have call successors, (6), 6 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-03-17 23:14:53,589 INFO L276 IsEmpty]: Start isEmpty. Operand 664 states and 964 transitions. [2022-03-17 23:14:53,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-03-17 23:14:53,594 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 23:14:53,594 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 23:14:53,594 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-03-17 23:14:53,594 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 23:14:53,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 23:14:53,595 INFO L85 PathProgramCache]: Analyzing trace with hash -759392990, now seen corresponding path program 1 times [2022-03-17 23:14:53,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 23:14:53,595 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016412636] [2022-03-17 23:14:53,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 23:14:53,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 23:14:53,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:14:53,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 23:14:53,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:14:53,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-17 23:14:53,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:14:53,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-17 23:14:53,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:14:53,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 23:14:53,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 23:14:53,770 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016412636] [2022-03-17 23:14:53,771 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1016412636] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 23:14:53,771 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 23:14:53,771 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-17 23:14:53,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758123647] [2022-03-17 23:14:53,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 23:14:53,771 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-17 23:14:53,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 23:14:53,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-17 23:14:53,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-03-17 23:14:53,772 INFO L87 Difference]: Start difference. First operand 664 states and 964 transitions. Second operand has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 3 states have internal predecessors, (19), 3 states have call successors, (8), 6 states have call predecessors, (8), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-03-17 23:14:55,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 23:14:55,268 INFO L93 Difference]: Finished difference Result 1148 states and 1650 transitions. [2022-03-17 23:14:55,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-17 23:14:55,269 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 3 states have internal predecessors, (19), 3 states have call successors, (8), 6 states have call predecessors, (8), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 30 [2022-03-17 23:14:55,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 23:14:55,274 INFO L225 Difference]: With dead ends: 1148 [2022-03-17 23:14:55,275 INFO L226 Difference]: Without dead ends: 970 [2022-03-17 23:14:55,275 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-03-17 23:14:55,276 INFO L912 BasicCegarLoop]: 725 mSDtfsCounter, 1121 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 1647 mSolverCounterSat, 250 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1131 SdHoareTripleChecker+Valid, 886 SdHoareTripleChecker+Invalid, 1897 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 250 IncrementalHoareTripleChecker+Valid, 1647 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-03-17 23:14:55,276 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [1131 Valid, 886 Invalid, 1897 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [250 Valid, 1647 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-03-17 23:14:55,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 970 states. [2022-03-17 23:14:55,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 970 to 789. [2022-03-17 23:14:55,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 789 states, 611 states have (on average 1.4042553191489362) internal successors, (858), 615 states have internal predecessors, (858), 114 states have call successors, (114), 46 states have call predecessors, (114), 63 states have return successors, (163), 130 states have call predecessors, (163), 104 states have call successors, (163) [2022-03-17 23:14:55,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 789 states to 789 states and 1135 transitions. [2022-03-17 23:14:55,312 INFO L78 Accepts]: Start accepts. Automaton has 789 states and 1135 transitions. Word has length 30 [2022-03-17 23:14:55,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 23:14:55,313 INFO L478 AbstractCegarLoop]: Abstraction has 789 states and 1135 transitions. [2022-03-17 23:14:55,313 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 3 states have internal predecessors, (19), 3 states have call successors, (8), 6 states have call predecessors, (8), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-03-17 23:14:55,313 INFO L276 IsEmpty]: Start isEmpty. Operand 789 states and 1135 transitions. [2022-03-17 23:14:55,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-03-17 23:14:55,314 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 23:14:55,314 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 23:14:55,314 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-03-17 23:14:55,314 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 23:14:55,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 23:14:55,314 INFO L85 PathProgramCache]: Analyzing trace with hash 1280175921, now seen corresponding path program 1 times [2022-03-17 23:14:55,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 23:14:55,315 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960175171] [2022-03-17 23:14:55,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 23:14:55,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 23:14:55,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:14:55,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 23:14:55,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:14:55,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-17 23:14:55,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:14:55,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-17 23:14:55,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:14:55,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 23:14:55,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 23:14:55,407 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960175171] [2022-03-17 23:14:55,408 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [960175171] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 23:14:55,408 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 23:14:55,408 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-17 23:14:55,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545950134] [2022-03-17 23:14:55,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 23:14:55,408 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-17 23:14:55,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 23:14:55,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-17 23:14:55,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-03-17 23:14:55,409 INFO L87 Difference]: Start difference. First operand 789 states and 1135 transitions. Second operand has 6 states, 6 states have (on average 3.5) internal successors, (21), 3 states have internal predecessors, (21), 2 states have call successors, (7), 5 states have call predecessors, (7), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-03-17 23:14:57,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 23:14:57,134 INFO L93 Difference]: Finished difference Result 1630 states and 2449 transitions. [2022-03-17 23:14:57,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-17 23:14:57,135 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 3 states have internal predecessors, (21), 2 states have call successors, (7), 5 states have call predecessors, (7), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 31 [2022-03-17 23:14:57,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 23:14:57,155 INFO L225 Difference]: With dead ends: 1630 [2022-03-17 23:14:57,156 INFO L226 Difference]: Without dead ends: 1344 [2022-03-17 23:14:57,157 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-03-17 23:14:57,158 INFO L912 BasicCegarLoop]: 1006 mSDtfsCounter, 1482 mSDsluCounter, 256 mSDsCounter, 0 mSdLazyCounter, 1324 mSolverCounterSat, 529 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1485 SdHoareTripleChecker+Valid, 1262 SdHoareTripleChecker+Invalid, 1853 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 529 IncrementalHoareTripleChecker+Valid, 1324 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-03-17 23:14:57,158 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [1485 Valid, 1262 Invalid, 1853 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [529 Valid, 1324 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-03-17 23:14:57,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1344 states. [2022-03-17 23:14:57,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1344 to 907. [2022-03-17 23:14:57,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 907 states, 708 states have (on average 1.4138418079096045) internal successors, (1001), 711 states have internal predecessors, (1001), 127 states have call successors, (127), 54 states have call predecessors, (127), 71 states have return successors, (220), 144 states have call predecessors, (220), 117 states have call successors, (220) [2022-03-17 23:14:57,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 907 states to 907 states and 1348 transitions. [2022-03-17 23:14:57,283 INFO L78 Accepts]: Start accepts. Automaton has 907 states and 1348 transitions. Word has length 31 [2022-03-17 23:14:57,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 23:14:57,283 INFO L478 AbstractCegarLoop]: Abstraction has 907 states and 1348 transitions. [2022-03-17 23:14:57,283 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 3 states have internal predecessors, (21), 2 states have call successors, (7), 5 states have call predecessors, (7), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-03-17 23:14:57,283 INFO L276 IsEmpty]: Start isEmpty. Operand 907 states and 1348 transitions. [2022-03-17 23:14:57,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-03-17 23:14:57,284 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 23:14:57,284 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 23:14:57,284 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-03-17 23:14:57,285 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 23:14:57,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 23:14:57,285 INFO L85 PathProgramCache]: Analyzing trace with hash 998226604, now seen corresponding path program 1 times [2022-03-17 23:14:57,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 23:14:57,285 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088747686] [2022-03-17 23:14:57,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 23:14:57,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 23:14:57,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:14:57,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 23:14:57,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:14:57,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-17 23:14:57,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:14:57,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-17 23:14:57,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:14:57,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 23:14:57,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 23:14:57,480 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088747686] [2022-03-17 23:14:57,480 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2088747686] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 23:14:57,481 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 23:14:57,481 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-03-17 23:14:57,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894953417] [2022-03-17 23:14:57,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 23:14:57,481 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-17 23:14:57,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 23:14:57,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-17 23:14:57,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-03-17 23:14:57,482 INFO L87 Difference]: Start difference. First operand 907 states and 1348 transitions. Second operand has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 6 states have internal predecessors, (22), 4 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-03-17 23:14:59,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 23:14:59,401 INFO L93 Difference]: Finished difference Result 1632 states and 2483 transitions. [2022-03-17 23:14:59,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-17 23:14:59,402 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 6 states have internal predecessors, (22), 4 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 32 [2022-03-17 23:14:59,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 23:14:59,431 INFO L225 Difference]: With dead ends: 1632 [2022-03-17 23:14:59,431 INFO L226 Difference]: Without dead ends: 1046 [2022-03-17 23:14:59,433 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2022-03-17 23:14:59,434 INFO L912 BasicCegarLoop]: 743 mSDtfsCounter, 2772 mSDsluCounter, 289 mSDsCounter, 0 mSdLazyCounter, 1635 mSolverCounterSat, 974 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2778 SdHoareTripleChecker+Valid, 1032 SdHoareTripleChecker+Invalid, 2609 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 974 IncrementalHoareTripleChecker+Valid, 1635 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-03-17 23:14:59,434 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [2778 Valid, 1032 Invalid, 2609 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [974 Valid, 1635 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-03-17 23:14:59,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1046 states. [2022-03-17 23:14:59,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1046 to 835. [2022-03-17 23:14:59,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 835 states, 649 states have (on average 1.399075500770416) internal successors, (908), 653 states have internal predecessors, (908), 118 states have call successors, (118), 50 states have call predecessors, (118), 67 states have return successors, (177), 134 states have call predecessors, (177), 108 states have call successors, (177) [2022-03-17 23:14:59,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 835 states to 835 states and 1203 transitions. [2022-03-17 23:14:59,476 INFO L78 Accepts]: Start accepts. Automaton has 835 states and 1203 transitions. Word has length 32 [2022-03-17 23:14:59,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 23:14:59,477 INFO L478 AbstractCegarLoop]: Abstraction has 835 states and 1203 transitions. [2022-03-17 23:14:59,477 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 6 states have internal predecessors, (22), 4 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-03-17 23:14:59,477 INFO L276 IsEmpty]: Start isEmpty. Operand 835 states and 1203 transitions. [2022-03-17 23:14:59,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-03-17 23:14:59,478 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 23:14:59,478 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 23:14:59,478 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-03-17 23:14:59,478 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 23:14:59,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 23:14:59,479 INFO L85 PathProgramCache]: Analyzing trace with hash 936943045, now seen corresponding path program 1 times [2022-03-17 23:14:59,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 23:14:59,479 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275255013] [2022-03-17 23:14:59,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 23:14:59,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 23:14:59,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:14:59,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 23:14:59,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:14:59,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-17 23:14:59,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:14:59,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-17 23:14:59,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:14:59,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 23:14:59,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 23:14:59,586 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275255013] [2022-03-17 23:14:59,586 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [275255013] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 23:14:59,586 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 23:14:59,586 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-17 23:14:59,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566874300] [2022-03-17 23:14:59,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 23:14:59,589 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-17 23:14:59,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 23:14:59,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-17 23:14:59,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-03-17 23:14:59,590 INFO L87 Difference]: Start difference. First operand 835 states and 1203 transitions. Second operand has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 3 states have internal predecessors, (25), 3 states have call successors, (8), 6 states have call predecessors, (8), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-03-17 23:15:01,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 23:15:01,105 INFO L93 Difference]: Finished difference Result 965 states and 1425 transitions. [2022-03-17 23:15:01,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-17 23:15:01,106 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 3 states have internal predecessors, (25), 3 states have call successors, (8), 6 states have call predecessors, (8), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 36 [2022-03-17 23:15:01,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 23:15:01,111 INFO L225 Difference]: With dead ends: 965 [2022-03-17 23:15:01,111 INFO L226 Difference]: Without dead ends: 961 [2022-03-17 23:15:01,112 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-03-17 23:15:01,129 INFO L912 BasicCegarLoop]: 713 mSDtfsCounter, 407 mSDsluCounter, 270 mSDsCounter, 0 mSdLazyCounter, 1880 mSolverCounterSat, 142 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 408 SdHoareTripleChecker+Valid, 983 SdHoareTripleChecker+Invalid, 2022 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 142 IncrementalHoareTripleChecker+Valid, 1880 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-03-17 23:15:01,134 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [408 Valid, 983 Invalid, 2022 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [142 Valid, 1880 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-03-17 23:15:01,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 961 states. [2022-03-17 23:15:01,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 961 to 834. [2022-03-17 23:15:01,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 834 states, 649 states have (on average 1.3959938366718028) internal successors, (906), 652 states have internal predecessors, (906), 117 states have call successors, (117), 50 states have call predecessors, (117), 67 states have return successors, (177), 134 states have call predecessors, (177), 108 states have call successors, (177) [2022-03-17 23:15:01,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 834 states to 834 states and 1200 transitions. [2022-03-17 23:15:01,194 INFO L78 Accepts]: Start accepts. Automaton has 834 states and 1200 transitions. Word has length 36 [2022-03-17 23:15:01,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 23:15:01,194 INFO L478 AbstractCegarLoop]: Abstraction has 834 states and 1200 transitions. [2022-03-17 23:15:01,194 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 3 states have internal predecessors, (25), 3 states have call successors, (8), 6 states have call predecessors, (8), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-03-17 23:15:01,194 INFO L276 IsEmpty]: Start isEmpty. Operand 834 states and 1200 transitions. [2022-03-17 23:15:01,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-03-17 23:15:01,195 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 23:15:01,195 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 23:15:01,196 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-03-17 23:15:01,196 INFO L403 AbstractCegarLoop]: === Iteration 7 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 23:15:01,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 23:15:01,196 INFO L85 PathProgramCache]: Analyzing trace with hash -1670644950, now seen corresponding path program 1 times [2022-03-17 23:15:01,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 23:15:01,196 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239460938] [2022-03-17 23:15:01,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 23:15:01,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 23:15:01,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:01,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 23:15:01,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:01,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-17 23:15:01,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:01,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-17 23:15:01,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:01,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 23:15:01,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 23:15:01,344 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239460938] [2022-03-17 23:15:01,344 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [239460938] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 23:15:01,344 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 23:15:01,344 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-03-17 23:15:01,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284526258] [2022-03-17 23:15:01,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 23:15:01,344 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-17 23:15:01,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 23:15:01,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-17 23:15:01,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-03-17 23:15:01,345 INFO L87 Difference]: Start difference. First operand 834 states and 1200 transitions. Second operand has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 4 states have internal predecessors, (26), 3 states have call successors, (10), 6 states have call predecessors, (10), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-03-17 23:15:02,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 23:15:02,893 INFO L93 Difference]: Finished difference Result 1417 states and 2024 transitions. [2022-03-17 23:15:02,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-17 23:15:02,893 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 4 states have internal predecessors, (26), 3 states have call successors, (10), 6 states have call predecessors, (10), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 39 [2022-03-17 23:15:02,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 23:15:02,897 INFO L225 Difference]: With dead ends: 1417 [2022-03-17 23:15:02,898 INFO L226 Difference]: Without dead ends: 999 [2022-03-17 23:15:02,899 INFO L911 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 [2022-03-17 23:15:02,902 INFO L912 BasicCegarLoop]: 821 mSDtfsCounter, 764 mSDsluCounter, 432 mSDsCounter, 0 mSdLazyCounter, 2153 mSolverCounterSat, 238 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 766 SdHoareTripleChecker+Valid, 1253 SdHoareTripleChecker+Invalid, 2391 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 238 IncrementalHoareTripleChecker+Valid, 2153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-03-17 23:15:02,902 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [766 Valid, 1253 Invalid, 2391 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [238 Valid, 2153 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-03-17 23:15:02,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 999 states. [2022-03-17 23:15:02,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 999 to 736. [2022-03-17 23:15:02,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 736 states, 571 states have (on average 1.3870402802101576) internal successors, (792), 575 states have internal predecessors, (792), 106 states have call successors, (106), 45 states have call predecessors, (106), 58 states have return successors, (131), 118 states have call predecessors, (131), 97 states have call successors, (131) [2022-03-17 23:15:02,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 736 states to 736 states and 1029 transitions. [2022-03-17 23:15:02,944 INFO L78 Accepts]: Start accepts. Automaton has 736 states and 1029 transitions. Word has length 39 [2022-03-17 23:15:02,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 23:15:02,944 INFO L478 AbstractCegarLoop]: Abstraction has 736 states and 1029 transitions. [2022-03-17 23:15:02,944 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 4 states have internal predecessors, (26), 3 states have call successors, (10), 6 states have call predecessors, (10), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-03-17 23:15:02,944 INFO L276 IsEmpty]: Start isEmpty. Operand 736 states and 1029 transitions. [2022-03-17 23:15:02,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-03-17 23:15:02,946 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 23:15:02,946 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 23:15:02,946 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-03-17 23:15:02,946 INFO L403 AbstractCegarLoop]: === Iteration 8 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 23:15:02,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 23:15:02,947 INFO L85 PathProgramCache]: Analyzing trace with hash -1528829481, now seen corresponding path program 1 times [2022-03-17 23:15:02,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 23:15:02,947 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395564318] [2022-03-17 23:15:02,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 23:15:02,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 23:15:02,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:03,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 23:15:03,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:03,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-17 23:15:03,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:03,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-17 23:15:03,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:03,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 23:15:03,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 23:15:03,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395564318] [2022-03-17 23:15:03,069 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1395564318] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 23:15:03,069 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 23:15:03,069 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-17 23:15:03,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689853018] [2022-03-17 23:15:03,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 23:15:03,070 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-17 23:15:03,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 23:15:03,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-17 23:15:03,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-03-17 23:15:03,070 INFO L87 Difference]: Start difference. First operand 736 states and 1029 transitions. Second operand has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 3 states have internal predecessors, (28), 3 states have call successors, (9), 6 states have call predecessors, (9), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-03-17 23:15:03,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 23:15:03,956 INFO L93 Difference]: Finished difference Result 979 states and 1409 transitions. [2022-03-17 23:15:03,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-17 23:15:03,956 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 3 states have internal predecessors, (28), 3 states have call successors, (9), 6 states have call predecessors, (9), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 40 [2022-03-17 23:15:03,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 23:15:03,960 INFO L225 Difference]: With dead ends: 979 [2022-03-17 23:15:03,960 INFO L226 Difference]: Without dead ends: 959 [2022-03-17 23:15:03,960 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-03-17 23:15:03,961 INFO L912 BasicCegarLoop]: 672 mSDtfsCounter, 1483 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 994 mSolverCounterSat, 390 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1491 SdHoareTripleChecker+Valid, 772 SdHoareTripleChecker+Invalid, 1384 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 390 IncrementalHoareTripleChecker+Valid, 994 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-17 23:15:03,961 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [1491 Valid, 772 Invalid, 1384 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [390 Valid, 994 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-17 23:15:03,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 959 states. [2022-03-17 23:15:04,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 959 to 762. [2022-03-17 23:15:04,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 762 states, 595 states have (on average 1.3983193277310924) internal successors, (832), 608 states have internal predecessors, (832), 108 states have call successors, (108), 48 states have call predecessors, (108), 58 states have return successors, (124), 110 states have call predecessors, (124), 100 states have call successors, (124) [2022-03-17 23:15:04,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 762 states to 762 states and 1064 transitions. [2022-03-17 23:15:04,003 INFO L78 Accepts]: Start accepts. Automaton has 762 states and 1064 transitions. Word has length 40 [2022-03-17 23:15:04,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 23:15:04,003 INFO L478 AbstractCegarLoop]: Abstraction has 762 states and 1064 transitions. [2022-03-17 23:15:04,003 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 3 states have internal predecessors, (28), 3 states have call successors, (9), 6 states have call predecessors, (9), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-03-17 23:15:04,003 INFO L276 IsEmpty]: Start isEmpty. Operand 762 states and 1064 transitions. [2022-03-17 23:15:04,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-03-17 23:15:04,005 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 23:15:04,005 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 23:15:04,005 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-03-17 23:15:04,005 INFO L403 AbstractCegarLoop]: === Iteration 9 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 23:15:04,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 23:15:04,005 INFO L85 PathProgramCache]: Analyzing trace with hash 689414503, now seen corresponding path program 1 times [2022-03-17 23:15:04,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 23:15:04,005 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380393455] [2022-03-17 23:15:04,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 23:15:04,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 23:15:04,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:04,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 23:15:04,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:04,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-17 23:15:04,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:04,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-17 23:15:04,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:04,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-03-17 23:15:04,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:04,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 23:15:04,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 23:15:04,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380393455] [2022-03-17 23:15:04,109 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1380393455] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 23:15:04,109 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 23:15:04,109 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-03-17 23:15:04,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64314987] [2022-03-17 23:15:04,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 23:15:04,110 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-17 23:15:04,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 23:15:04,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-17 23:15:04,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-03-17 23:15:04,111 INFO L87 Difference]: Start difference. First operand 762 states and 1064 transitions. Second operand has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 3 states have internal predecessors, (32), 3 states have call successors, (10), 7 states have call predecessors, (10), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-03-17 23:15:05,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 23:15:05,531 INFO L93 Difference]: Finished difference Result 1167 states and 1671 transitions. [2022-03-17 23:15:05,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-17 23:15:05,532 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 3 states have internal predecessors, (32), 3 states have call successors, (10), 7 states have call predecessors, (10), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 46 [2022-03-17 23:15:05,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 23:15:05,537 INFO L225 Difference]: With dead ends: 1167 [2022-03-17 23:15:05,537 INFO L226 Difference]: Without dead ends: 942 [2022-03-17 23:15:05,538 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2022-03-17 23:15:05,540 INFO L912 BasicCegarLoop]: 791 mSDtfsCounter, 921 mSDsluCounter, 592 mSDsCounter, 0 mSdLazyCounter, 1706 mSolverCounterSat, 295 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 927 SdHoareTripleChecker+Valid, 1383 SdHoareTripleChecker+Invalid, 2001 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 295 IncrementalHoareTripleChecker+Valid, 1706 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-03-17 23:15:05,540 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [927 Valid, 1383 Invalid, 2001 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [295 Valid, 1706 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-03-17 23:15:05,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 942 states. [2022-03-17 23:15:05,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 942 to 762. [2022-03-17 23:15:05,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 762 states, 595 states have (on average 1.3966386554621848) internal successors, (831), 608 states have internal predecessors, (831), 108 states have call successors, (108), 48 states have call predecessors, (108), 58 states have return successors, (124), 110 states have call predecessors, (124), 100 states have call successors, (124) [2022-03-17 23:15:05,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 762 states to 762 states and 1063 transitions. [2022-03-17 23:15:05,585 INFO L78 Accepts]: Start accepts. Automaton has 762 states and 1063 transitions. Word has length 46 [2022-03-17 23:15:05,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 23:15:05,585 INFO L478 AbstractCegarLoop]: Abstraction has 762 states and 1063 transitions. [2022-03-17 23:15:05,585 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 3 states have internal predecessors, (32), 3 states have call successors, (10), 7 states have call predecessors, (10), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-03-17 23:15:05,585 INFO L276 IsEmpty]: Start isEmpty. Operand 762 states and 1063 transitions. [2022-03-17 23:15:05,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-03-17 23:15:05,587 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 23:15:05,587 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 23:15:05,588 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-03-17 23:15:05,588 INFO L403 AbstractCegarLoop]: === Iteration 10 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 23:15:05,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 23:15:05,588 INFO L85 PathProgramCache]: Analyzing trace with hash -735623654, now seen corresponding path program 1 times [2022-03-17 23:15:05,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 23:15:05,588 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735028508] [2022-03-17 23:15:05,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 23:15:05,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 23:15:05,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:05,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 23:15:05,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:05,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-17 23:15:05,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:05,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-17 23:15:05,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:05,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-03-17 23:15:05,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:05,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 23:15:05,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 23:15:05,703 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735028508] [2022-03-17 23:15:05,703 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [735028508] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 23:15:05,703 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 23:15:05,703 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-03-17 23:15:05,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957105002] [2022-03-17 23:15:05,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 23:15:05,704 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-17 23:15:05,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 23:15:05,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-17 23:15:05,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-03-17 23:15:05,704 INFO L87 Difference]: Start difference. First operand 762 states and 1063 transitions. Second operand has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 3 states have internal predecessors, (34), 3 states have call successors, (9), 7 states have call predecessors, (9), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-03-17 23:15:06,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 23:15:06,926 INFO L93 Difference]: Finished difference Result 964 states and 1383 transitions. [2022-03-17 23:15:06,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-17 23:15:06,927 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 3 states have internal predecessors, (34), 3 states have call successors, (9), 7 states have call predecessors, (9), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 47 [2022-03-17 23:15:06,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 23:15:06,931 INFO L225 Difference]: With dead ends: 964 [2022-03-17 23:15:06,931 INFO L226 Difference]: Without dead ends: 897 [2022-03-17 23:15:06,931 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=53, Unknown=0, NotChecked=0, Total=90 [2022-03-17 23:15:06,932 INFO L912 BasicCegarLoop]: 667 mSDtfsCounter, 1147 mSDsluCounter, 450 mSDsCounter, 0 mSdLazyCounter, 1167 mSolverCounterSat, 258 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1153 SdHoareTripleChecker+Valid, 1117 SdHoareTripleChecker+Invalid, 1425 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 258 IncrementalHoareTripleChecker+Valid, 1167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-03-17 23:15:06,932 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [1153 Valid, 1117 Invalid, 1425 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [258 Valid, 1167 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-03-17 23:15:06,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 897 states. [2022-03-17 23:15:06,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 897 to 751. [2022-03-17 23:15:06,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 751 states, 588 states have (on average 1.3979591836734695) internal successors, (822), 601 states have internal predecessors, (822), 106 states have call successors, (106), 46 states have call predecessors, (106), 56 states have return successors, (122), 108 states have call predecessors, (122), 98 states have call successors, (122) [2022-03-17 23:15:07,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 751 states to 751 states and 1050 transitions. [2022-03-17 23:15:07,001 INFO L78 Accepts]: Start accepts. Automaton has 751 states and 1050 transitions. Word has length 47 [2022-03-17 23:15:07,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 23:15:07,001 INFO L478 AbstractCegarLoop]: Abstraction has 751 states and 1050 transitions. [2022-03-17 23:15:07,002 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 3 states have internal predecessors, (34), 3 states have call successors, (9), 7 states have call predecessors, (9), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-03-17 23:15:07,002 INFO L276 IsEmpty]: Start isEmpty. Operand 751 states and 1050 transitions. [2022-03-17 23:15:07,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-03-17 23:15:07,004 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 23:15:07,004 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 23:15:07,004 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-03-17 23:15:07,004 INFO L403 AbstractCegarLoop]: === Iteration 11 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 23:15:07,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 23:15:07,005 INFO L85 PathProgramCache]: Analyzing trace with hash -1452242056, now seen corresponding path program 1 times [2022-03-17 23:15:07,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 23:15:07,005 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734908815] [2022-03-17 23:15:07,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 23:15:07,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 23:15:07,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:07,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 23:15:07,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:07,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-17 23:15:07,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:07,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-17 23:15:07,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:07,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-03-17 23:15:07,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:07,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-17 23:15:07,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:07,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 23:15:07,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 23:15:07,136 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734908815] [2022-03-17 23:15:07,136 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1734908815] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 23:15:07,136 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 23:15:07,136 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-03-17 23:15:07,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980835600] [2022-03-17 23:15:07,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 23:15:07,136 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-17 23:15:07,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 23:15:07,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-17 23:15:07,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2022-03-17 23:15:07,137 INFO L87 Difference]: Start difference. First operand 751 states and 1050 transitions. Second operand has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 7 states have internal predecessors, (36), 4 states have call successors, (7), 6 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2022-03-17 23:15:09,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 23:15:09,428 INFO L93 Difference]: Finished difference Result 1067 states and 1515 transitions. [2022-03-17 23:15:09,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-03-17 23:15:09,429 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 7 states have internal predecessors, (36), 4 states have call successors, (7), 6 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) Word has length 48 [2022-03-17 23:15:09,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 23:15:09,432 INFO L225 Difference]: With dead ends: 1067 [2022-03-17 23:15:09,432 INFO L226 Difference]: Without dead ends: 1006 [2022-03-17 23:15:09,433 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=119, Invalid=343, Unknown=0, NotChecked=0, Total=462 [2022-03-17 23:15:09,433 INFO L912 BasicCegarLoop]: 741 mSDtfsCounter, 1828 mSDsluCounter, 975 mSDsCounter, 0 mSdLazyCounter, 3121 mSolverCounterSat, 589 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1857 SdHoareTripleChecker+Valid, 1716 SdHoareTripleChecker+Invalid, 3710 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 589 IncrementalHoareTripleChecker+Valid, 3121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-03-17 23:15:09,434 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [1857 Valid, 1716 Invalid, 3710 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [589 Valid, 3121 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-03-17 23:15:09,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1006 states. [2022-03-17 23:15:09,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1006 to 794. [2022-03-17 23:15:09,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 794 states, 623 states have (on average 1.3964686998394864) internal successors, (870), 635 states have internal predecessors, (870), 110 states have call successors, (110), 49 states have call predecessors, (110), 60 states have return successors, (131), 114 states have call predecessors, (131), 102 states have call successors, (131) [2022-03-17 23:15:09,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 794 states to 794 states and 1111 transitions. [2022-03-17 23:15:09,478 INFO L78 Accepts]: Start accepts. Automaton has 794 states and 1111 transitions. Word has length 48 [2022-03-17 23:15:09,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 23:15:09,478 INFO L478 AbstractCegarLoop]: Abstraction has 794 states and 1111 transitions. [2022-03-17 23:15:09,478 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 7 states have internal predecessors, (36), 4 states have call successors, (7), 6 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2022-03-17 23:15:09,478 INFO L276 IsEmpty]: Start isEmpty. Operand 794 states and 1111 transitions. [2022-03-17 23:15:09,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-03-17 23:15:09,480 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 23:15:09,480 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 23:15:09,480 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-03-17 23:15:09,480 INFO L403 AbstractCegarLoop]: === Iteration 12 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 23:15:09,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 23:15:09,480 INFO L85 PathProgramCache]: Analyzing trace with hash -1568241764, now seen corresponding path program 1 times [2022-03-17 23:15:09,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 23:15:09,481 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514033215] [2022-03-17 23:15:09,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 23:15:09,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 23:15:09,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:09,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 23:15:09,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:09,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-17 23:15:09,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:09,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-17 23:15:09,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:09,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-03-17 23:15:09,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:09,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-17 23:15:09,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:09,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 23:15:09,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 23:15:09,629 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514033215] [2022-03-17 23:15:09,629 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [514033215] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 23:15:09,630 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 23:15:09,630 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-03-17 23:15:09,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674916441] [2022-03-17 23:15:09,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 23:15:09,630 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-17 23:15:09,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 23:15:09,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-17 23:15:09,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-03-17 23:15:09,631 INFO L87 Difference]: Start difference. First operand 794 states and 1111 transitions. Second operand has 10 states, 10 states have (on average 3.8) internal successors, (38), 6 states have internal predecessors, (38), 3 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2022-03-17 23:15:11,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 23:15:11,144 INFO L93 Difference]: Finished difference Result 952 states and 1368 transitions. [2022-03-17 23:15:11,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-17 23:15:11,144 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.8) internal successors, (38), 6 states have internal predecessors, (38), 3 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) Word has length 50 [2022-03-17 23:15:11,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 23:15:11,147 INFO L225 Difference]: With dead ends: 952 [2022-03-17 23:15:11,147 INFO L226 Difference]: Without dead ends: 924 [2022-03-17 23:15:11,147 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2022-03-17 23:15:11,148 INFO L912 BasicCegarLoop]: 652 mSDtfsCounter, 2169 mSDsluCounter, 772 mSDsCounter, 0 mSdLazyCounter, 1377 mSolverCounterSat, 650 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2180 SdHoareTripleChecker+Valid, 1424 SdHoareTripleChecker+Invalid, 2027 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 650 IncrementalHoareTripleChecker+Valid, 1377 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-03-17 23:15:11,148 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [2180 Valid, 1424 Invalid, 2027 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [650 Valid, 1377 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-03-17 23:15:11,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 924 states. [2022-03-17 23:15:11,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 924 to 797. [2022-03-17 23:15:11,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 797 states, 626 states have (on average 1.3961661341853036) internal successors, (874), 638 states have internal predecessors, (874), 110 states have call successors, (110), 49 states have call predecessors, (110), 60 states have return successors, (131), 114 states have call predecessors, (131), 102 states have call successors, (131) [2022-03-17 23:15:11,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 797 states to 797 states and 1115 transitions. [2022-03-17 23:15:11,196 INFO L78 Accepts]: Start accepts. Automaton has 797 states and 1115 transitions. Word has length 50 [2022-03-17 23:15:11,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 23:15:11,196 INFO L478 AbstractCegarLoop]: Abstraction has 797 states and 1115 transitions. [2022-03-17 23:15:11,196 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.8) internal successors, (38), 6 states have internal predecessors, (38), 3 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2022-03-17 23:15:11,196 INFO L276 IsEmpty]: Start isEmpty. Operand 797 states and 1115 transitions. [2022-03-17 23:15:11,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-03-17 23:15:11,198 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 23:15:11,198 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 23:15:11,198 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-03-17 23:15:11,198 INFO L403 AbstractCegarLoop]: === Iteration 13 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 23:15:11,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 23:15:11,198 INFO L85 PathProgramCache]: Analyzing trace with hash 1729653179, now seen corresponding path program 1 times [2022-03-17 23:15:11,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 23:15:11,199 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118702843] [2022-03-17 23:15:11,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 23:15:11,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 23:15:11,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:11,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 23:15:11,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:11,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-17 23:15:11,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:11,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-17 23:15:11,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:11,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-03-17 23:15:11,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:11,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-17 23:15:11,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:11,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 23:15:11,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 23:15:11,362 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118702843] [2022-03-17 23:15:11,362 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2118702843] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 23:15:11,362 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 23:15:11,362 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-17 23:15:11,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340181747] [2022-03-17 23:15:11,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 23:15:11,363 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-17 23:15:11,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 23:15:11,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-17 23:15:11,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2022-03-17 23:15:11,363 INFO L87 Difference]: Start difference. First operand 797 states and 1115 transitions. Second operand has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 8 states have internal predecessors, (38), 4 states have call successors, (7), 6 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2022-03-17 23:15:13,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 23:15:13,002 INFO L93 Difference]: Finished difference Result 978 states and 1402 transitions. [2022-03-17 23:15:13,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-17 23:15:13,003 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 8 states have internal predecessors, (38), 4 states have call successors, (7), 6 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) Word has length 50 [2022-03-17 23:15:13,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 23:15:13,005 INFO L225 Difference]: With dead ends: 978 [2022-03-17 23:15:13,005 INFO L226 Difference]: Without dead ends: 914 [2022-03-17 23:15:13,006 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2022-03-17 23:15:13,006 INFO L912 BasicCegarLoop]: 652 mSDtfsCounter, 2233 mSDsluCounter, 855 mSDsCounter, 0 mSdLazyCounter, 2119 mSolverCounterSat, 668 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2242 SdHoareTripleChecker+Valid, 1507 SdHoareTripleChecker+Invalid, 2787 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 668 IncrementalHoareTripleChecker+Valid, 2119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-03-17 23:15:13,007 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [2242 Valid, 1507 Invalid, 2787 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [668 Valid, 2119 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-03-17 23:15:13,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 914 states. [2022-03-17 23:15:13,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 914 to 792. [2022-03-17 23:15:13,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 792 states, 621 states have (on average 1.391304347826087) internal successors, (864), 633 states have internal predecessors, (864), 110 states have call successors, (110), 49 states have call predecessors, (110), 60 states have return successors, (131), 114 states have call predecessors, (131), 102 states have call successors, (131) [2022-03-17 23:15:13,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 792 states to 792 states and 1105 transitions. [2022-03-17 23:15:13,063 INFO L78 Accepts]: Start accepts. Automaton has 792 states and 1105 transitions. Word has length 50 [2022-03-17 23:15:13,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 23:15:13,064 INFO L478 AbstractCegarLoop]: Abstraction has 792 states and 1105 transitions. [2022-03-17 23:15:13,064 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 8 states have internal predecessors, (38), 4 states have call successors, (7), 6 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2022-03-17 23:15:13,064 INFO L276 IsEmpty]: Start isEmpty. Operand 792 states and 1105 transitions. [2022-03-17 23:15:13,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-03-17 23:15:13,065 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 23:15:13,065 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 23:15:13,065 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-03-17 23:15:13,065 INFO L403 AbstractCegarLoop]: === Iteration 14 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 23:15:13,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 23:15:13,066 INFO L85 PathProgramCache]: Analyzing trace with hash -111891045, now seen corresponding path program 1 times [2022-03-17 23:15:13,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 23:15:13,066 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1452625634] [2022-03-17 23:15:13,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 23:15:13,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 23:15:13,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:13,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 23:15:13,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:13,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-17 23:15:13,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:13,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-17 23:15:13,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:13,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-03-17 23:15:13,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:13,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-17 23:15:13,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:13,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 23:15:13,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 23:15:13,192 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1452625634] [2022-03-17 23:15:13,192 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1452625634] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 23:15:13,192 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 23:15:13,192 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-03-17 23:15:13,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868234152] [2022-03-17 23:15:13,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 23:15:13,192 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-17 23:15:13,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 23:15:13,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-17 23:15:13,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-03-17 23:15:13,193 INFO L87 Difference]: Start difference. First operand 792 states and 1105 transitions. Second operand has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (7), 6 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2022-03-17 23:15:14,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 23:15:14,552 INFO L93 Difference]: Finished difference Result 1090 states and 1555 transitions. [2022-03-17 23:15:14,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-17 23:15:14,552 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (7), 6 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) Word has length 50 [2022-03-17 23:15:14,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 23:15:14,556 INFO L225 Difference]: With dead ends: 1090 [2022-03-17 23:15:14,556 INFO L226 Difference]: Without dead ends: 1074 [2022-03-17 23:15:14,556 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-03-17 23:15:14,557 INFO L912 BasicCegarLoop]: 799 mSDtfsCounter, 1242 mSDsluCounter, 562 mSDsCounter, 0 mSdLazyCounter, 1325 mSolverCounterSat, 438 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1245 SdHoareTripleChecker+Valid, 1361 SdHoareTripleChecker+Invalid, 1763 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 438 IncrementalHoareTripleChecker+Valid, 1325 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-03-17 23:15:14,557 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [1245 Valid, 1361 Invalid, 1763 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [438 Valid, 1325 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-03-17 23:15:14,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1074 states. [2022-03-17 23:15:14,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1074 to 848. [2022-03-17 23:15:14,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 848 states, 663 states have (on average 1.3725490196078431) internal successors, (910), 677 states have internal predecessors, (910), 112 states have call successors, (112), 51 states have call predecessors, (112), 72 states have return successors, (143), 126 states have call predecessors, (143), 104 states have call successors, (143) [2022-03-17 23:15:14,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 848 states to 848 states and 1165 transitions. [2022-03-17 23:15:14,610 INFO L78 Accepts]: Start accepts. Automaton has 848 states and 1165 transitions. Word has length 50 [2022-03-17 23:15:14,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 23:15:14,610 INFO L478 AbstractCegarLoop]: Abstraction has 848 states and 1165 transitions. [2022-03-17 23:15:14,610 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (7), 6 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2022-03-17 23:15:14,610 INFO L276 IsEmpty]: Start isEmpty. Operand 848 states and 1165 transitions. [2022-03-17 23:15:14,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-03-17 23:15:14,612 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 23:15:14,612 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 23:15:14,612 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-03-17 23:15:14,612 INFO L403 AbstractCegarLoop]: === Iteration 15 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 23:15:14,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 23:15:14,613 INFO L85 PathProgramCache]: Analyzing trace with hash 1040673977, now seen corresponding path program 1 times [2022-03-17 23:15:14,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 23:15:14,613 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334787552] [2022-03-17 23:15:14,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 23:15:14,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 23:15:14,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:14,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 23:15:14,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:14,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-17 23:15:14,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:14,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-17 23:15:14,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:14,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-03-17 23:15:14,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:14,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-03-17 23:15:14,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:14,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 23:15:14,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 23:15:14,703 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334787552] [2022-03-17 23:15:14,703 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [334787552] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 23:15:14,703 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 23:15:14,703 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-17 23:15:14,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47556874] [2022-03-17 23:15:14,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 23:15:14,704 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-17 23:15:14,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 23:15:14,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-17 23:15:14,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-03-17 23:15:14,704 INFO L87 Difference]: Start difference. First operand 848 states and 1165 transitions. Second operand has 8 states, 8 states have (on average 4.875) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (10), 7 states have call predecessors, (10), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2022-03-17 23:15:15,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 23:15:15,794 INFO L93 Difference]: Finished difference Result 1183 states and 1669 transitions. [2022-03-17 23:15:15,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-17 23:15:15,794 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (10), 7 states have call predecessors, (10), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) Word has length 54 [2022-03-17 23:15:15,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 23:15:15,798 INFO L225 Difference]: With dead ends: 1183 [2022-03-17 23:15:15,798 INFO L226 Difference]: Without dead ends: 937 [2022-03-17 23:15:15,800 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=67, Unknown=0, NotChecked=0, Total=110 [2022-03-17 23:15:15,800 INFO L912 BasicCegarLoop]: 641 mSDtfsCounter, 1064 mSDsluCounter, 512 mSDsCounter, 0 mSdLazyCounter, 1004 mSolverCounterSat, 365 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1097 SdHoareTripleChecker+Valid, 1153 SdHoareTripleChecker+Invalid, 1369 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 365 IncrementalHoareTripleChecker+Valid, 1004 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-03-17 23:15:15,801 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [1097 Valid, 1153 Invalid, 1369 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [365 Valid, 1004 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-03-17 23:15:15,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 937 states. [2022-03-17 23:15:15,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 937 to 817. [2022-03-17 23:15:15,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 817 states, 639 states have (on average 1.3724569640062598) internal successors, (877), 651 states have internal predecessors, (877), 110 states have call successors, (110), 50 states have call predecessors, (110), 67 states have return successors, (138), 121 states have call predecessors, (138), 103 states have call successors, (138) [2022-03-17 23:15:15,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 817 states to 817 states and 1125 transitions. [2022-03-17 23:15:15,897 INFO L78 Accepts]: Start accepts. Automaton has 817 states and 1125 transitions. Word has length 54 [2022-03-17 23:15:15,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 23:15:15,897 INFO L478 AbstractCegarLoop]: Abstraction has 817 states and 1125 transitions. [2022-03-17 23:15:15,897 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (10), 7 states have call predecessors, (10), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2022-03-17 23:15:15,897 INFO L276 IsEmpty]: Start isEmpty. Operand 817 states and 1125 transitions. [2022-03-17 23:15:15,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-03-17 23:15:15,899 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 23:15:15,899 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 23:15:15,899 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-03-17 23:15:15,899 INFO L403 AbstractCegarLoop]: === Iteration 16 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 23:15:15,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 23:15:15,900 INFO L85 PathProgramCache]: Analyzing trace with hash -1255093406, now seen corresponding path program 1 times [2022-03-17 23:15:15,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 23:15:15,900 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212582437] [2022-03-17 23:15:15,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 23:15:15,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 23:15:15,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:15,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 23:15:15,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:15,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-17 23:15:15,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:15,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-17 23:15:15,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:16,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-17 23:15:16,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:16,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-17 23:15:16,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:16,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-17 23:15:16,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:16,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 23:15:16,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 23:15:16,047 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212582437] [2022-03-17 23:15:16,049 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1212582437] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 23:15:16,049 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 23:15:16,049 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-03-17 23:15:16,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69752251] [2022-03-17 23:15:16,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 23:15:16,049 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-17 23:15:16,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 23:15:16,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-17 23:15:16,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2022-03-17 23:15:16,050 INFO L87 Difference]: Start difference. First operand 817 states and 1125 transitions. Second operand has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (8), 8 states have call predecessors, (8), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2022-03-17 23:15:17,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 23:15:17,757 INFO L93 Difference]: Finished difference Result 965 states and 1370 transitions. [2022-03-17 23:15:17,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-17 23:15:17,758 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (8), 8 states have call predecessors, (8), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) Word has length 52 [2022-03-17 23:15:17,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 23:15:17,761 INFO L225 Difference]: With dead ends: 965 [2022-03-17 23:15:17,761 INFO L226 Difference]: Without dead ends: 960 [2022-03-17 23:15:17,761 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2022-03-17 23:15:17,761 INFO L912 BasicCegarLoop]: 694 mSDtfsCounter, 493 mSDsluCounter, 556 mSDsCounter, 0 mSdLazyCounter, 2064 mSolverCounterSat, 151 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 496 SdHoareTripleChecker+Valid, 1250 SdHoareTripleChecker+Invalid, 2215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 151 IncrementalHoareTripleChecker+Valid, 2064 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-03-17 23:15:17,762 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [496 Valid, 1250 Invalid, 2215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [151 Valid, 2064 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-03-17 23:15:17,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 960 states. [2022-03-17 23:15:17,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 960 to 836. [2022-03-17 23:15:17,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 836 states, 655 states have (on average 1.369465648854962) internal successors, (897), 668 states have internal predecessors, (897), 111 states have call successors, (111), 51 states have call predecessors, (111), 69 states have return successors, (140), 123 states have call predecessors, (140), 104 states have call successors, (140) [2022-03-17 23:15:17,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 836 states to 836 states and 1148 transitions. [2022-03-17 23:15:17,812 INFO L78 Accepts]: Start accepts. Automaton has 836 states and 1148 transitions. Word has length 52 [2022-03-17 23:15:17,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 23:15:17,812 INFO L478 AbstractCegarLoop]: Abstraction has 836 states and 1148 transitions. [2022-03-17 23:15:17,812 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (8), 8 states have call predecessors, (8), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2022-03-17 23:15:17,812 INFO L276 IsEmpty]: Start isEmpty. Operand 836 states and 1148 transitions. [2022-03-17 23:15:17,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-03-17 23:15:17,814 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 23:15:17,814 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 23:15:17,814 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-03-17 23:15:17,814 INFO L403 AbstractCegarLoop]: === Iteration 17 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 23:15:17,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 23:15:17,814 INFO L85 PathProgramCache]: Analyzing trace with hash 856883353, now seen corresponding path program 1 times [2022-03-17 23:15:17,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 23:15:17,814 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717713887] [2022-03-17 23:15:17,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 23:15:17,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 23:15:17,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:17,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 23:15:17,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:17,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-17 23:15:17,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:17,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-17 23:15:17,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:17,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-03-17 23:15:17,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:17,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-17 23:15:17,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:17,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 23:15:17,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 23:15:17,963 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717713887] [2022-03-17 23:15:17,963 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1717713887] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 23:15:17,963 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 23:15:17,963 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-17 23:15:17,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024352659] [2022-03-17 23:15:17,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 23:15:17,963 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-17 23:15:17,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 23:15:17,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-17 23:15:17,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2022-03-17 23:15:17,964 INFO L87 Difference]: Start difference. First operand 836 states and 1148 transitions. Second operand has 12 states, 12 states have (on average 3.25) internal successors, (39), 6 states have internal predecessors, (39), 2 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2022-03-17 23:15:20,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 23:15:20,049 INFO L93 Difference]: Finished difference Result 981 states and 1388 transitions. [2022-03-17 23:15:20,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-17 23:15:20,049 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.25) internal successors, (39), 6 states have internal predecessors, (39), 2 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) Word has length 51 [2022-03-17 23:15:20,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 23:15:20,052 INFO L225 Difference]: With dead ends: 981 [2022-03-17 23:15:20,052 INFO L226 Difference]: Without dead ends: 977 [2022-03-17 23:15:20,053 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2022-03-17 23:15:20,054 INFO L912 BasicCegarLoop]: 707 mSDtfsCounter, 724 mSDsluCounter, 1744 mSDsCounter, 0 mSdLazyCounter, 3853 mSolverCounterSat, 277 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 726 SdHoareTripleChecker+Valid, 2451 SdHoareTripleChecker+Invalid, 4130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 277 IncrementalHoareTripleChecker+Valid, 3853 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-03-17 23:15:20,054 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [726 Valid, 2451 Invalid, 4130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [277 Valid, 3853 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-03-17 23:15:20,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 977 states. [2022-03-17 23:15:20,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 977 to 855. [2022-03-17 23:15:20,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 855 states, 671 states have (on average 1.3621460506706409) internal successors, (914), 685 states have internal predecessors, (914), 112 states have call successors, (112), 51 states have call predecessors, (112), 71 states have return successors, (143), 126 states have call predecessors, (143), 105 states have call successors, (143) [2022-03-17 23:15:20,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 855 states to 855 states and 1169 transitions. [2022-03-17 23:15:20,149 INFO L78 Accepts]: Start accepts. Automaton has 855 states and 1169 transitions. Word has length 51 [2022-03-17 23:15:20,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 23:15:20,149 INFO L478 AbstractCegarLoop]: Abstraction has 855 states and 1169 transitions. [2022-03-17 23:15:20,149 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.25) internal successors, (39), 6 states have internal predecessors, (39), 2 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2022-03-17 23:15:20,149 INFO L276 IsEmpty]: Start isEmpty. Operand 855 states and 1169 transitions. [2022-03-17 23:15:20,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-03-17 23:15:20,151 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 23:15:20,151 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 23:15:20,151 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-03-17 23:15:20,151 INFO L403 AbstractCegarLoop]: === Iteration 18 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 23:15:20,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 23:15:20,152 INFO L85 PathProgramCache]: Analyzing trace with hash 856915097, now seen corresponding path program 1 times [2022-03-17 23:15:20,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 23:15:20,152 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072910284] [2022-03-17 23:15:20,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 23:15:20,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 23:15:20,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:20,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 23:15:20,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:20,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-17 23:15:20,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:20,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-17 23:15:20,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:20,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-03-17 23:15:20,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:20,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-17 23:15:20,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:20,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 23:15:20,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 23:15:20,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072910284] [2022-03-17 23:15:20,305 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1072910284] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 23:15:20,305 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 23:15:20,305 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-17 23:15:20,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111957924] [2022-03-17 23:15:20,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 23:15:20,305 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-17 23:15:20,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 23:15:20,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-17 23:15:20,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2022-03-17 23:15:20,306 INFO L87 Difference]: Start difference. First operand 855 states and 1169 transitions. Second operand has 12 states, 12 states have (on average 3.25) internal successors, (39), 6 states have internal predecessors, (39), 2 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2022-03-17 23:15:22,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 23:15:22,167 INFO L93 Difference]: Finished difference Result 990 states and 1399 transitions. [2022-03-17 23:15:22,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-17 23:15:22,167 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.25) internal successors, (39), 6 states have internal predecessors, (39), 2 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) Word has length 51 [2022-03-17 23:15:22,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 23:15:22,170 INFO L225 Difference]: With dead ends: 990 [2022-03-17 23:15:22,170 INFO L226 Difference]: Without dead ends: 966 [2022-03-17 23:15:22,171 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2022-03-17 23:15:22,171 INFO L912 BasicCegarLoop]: 706 mSDtfsCounter, 1084 mSDsluCounter, 1673 mSDsCounter, 0 mSdLazyCounter, 3912 mSolverCounterSat, 416 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1086 SdHoareTripleChecker+Valid, 2379 SdHoareTripleChecker+Invalid, 4328 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 416 IncrementalHoareTripleChecker+Valid, 3912 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-03-17 23:15:22,172 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [1086 Valid, 2379 Invalid, 4328 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [416 Valid, 3912 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-03-17 23:15:22,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 966 states. [2022-03-17 23:15:22,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 966 to 842. [2022-03-17 23:15:22,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 842 states, 660 states have (on average 1.3666666666666667) internal successors, (902), 674 states have internal predecessors, (902), 112 states have call successors, (112), 51 states have call predecessors, (112), 69 states have return successors, (141), 124 states have call predecessors, (141), 105 states have call successors, (141) [2022-03-17 23:15:22,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 842 states to 842 states and 1155 transitions. [2022-03-17 23:15:22,228 INFO L78 Accepts]: Start accepts. Automaton has 842 states and 1155 transitions. Word has length 51 [2022-03-17 23:15:22,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 23:15:22,229 INFO L478 AbstractCegarLoop]: Abstraction has 842 states and 1155 transitions. [2022-03-17 23:15:22,229 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.25) internal successors, (39), 6 states have internal predecessors, (39), 2 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2022-03-17 23:15:22,229 INFO L276 IsEmpty]: Start isEmpty. Operand 842 states and 1155 transitions. [2022-03-17 23:15:22,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-03-17 23:15:22,230 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 23:15:22,230 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 23:15:22,231 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-03-17 23:15:22,231 INFO L403 AbstractCegarLoop]: === Iteration 19 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 23:15:22,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 23:15:22,231 INFO L85 PathProgramCache]: Analyzing trace with hash -222651470, now seen corresponding path program 1 times [2022-03-17 23:15:22,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 23:15:22,231 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804502190] [2022-03-17 23:15:22,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 23:15:22,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 23:15:22,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:22,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 23:15:22,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:22,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-17 23:15:22,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:22,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-17 23:15:22,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:22,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-17 23:15:22,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:22,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-17 23:15:22,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:22,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-17 23:15:22,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:22,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 23:15:22,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 23:15:22,432 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804502190] [2022-03-17 23:15:22,432 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [804502190] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 23:15:22,432 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 23:15:22,432 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-03-17 23:15:22,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54427392] [2022-03-17 23:15:22,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 23:15:22,433 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-03-17 23:15:22,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 23:15:22,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-03-17 23:15:22,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2022-03-17 23:15:22,434 INFO L87 Difference]: Start difference. First operand 842 states and 1155 transitions. Second operand has 13 states, 13 states have (on average 3.0) internal successors, (39), 7 states have internal predecessors, (39), 3 states have call successors, (8), 8 states have call predecessors, (8), 4 states have return successors, (6), 5 states have call predecessors, (6), 2 states have call successors, (6) [2022-03-17 23:15:24,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 23:15:24,283 INFO L93 Difference]: Finished difference Result 974 states and 1378 transitions. [2022-03-17 23:15:24,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-17 23:15:24,283 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 7 states have internal predecessors, (39), 3 states have call successors, (8), 8 states have call predecessors, (8), 4 states have return successors, (6), 5 states have call predecessors, (6), 2 states have call successors, (6) Word has length 53 [2022-03-17 23:15:24,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 23:15:24,286 INFO L225 Difference]: With dead ends: 974 [2022-03-17 23:15:24,286 INFO L226 Difference]: Without dead ends: 968 [2022-03-17 23:15:24,287 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=106, Invalid=274, Unknown=0, NotChecked=0, Total=380 [2022-03-17 23:15:24,288 INFO L912 BasicCegarLoop]: 659 mSDtfsCounter, 1254 mSDsluCounter, 1013 mSDsCounter, 0 mSdLazyCounter, 3454 mSolverCounterSat, 381 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1280 SdHoareTripleChecker+Valid, 1672 SdHoareTripleChecker+Invalid, 3835 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 381 IncrementalHoareTripleChecker+Valid, 3454 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-03-17 23:15:24,288 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [1280 Valid, 1672 Invalid, 3835 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [381 Valid, 3454 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-03-17 23:15:24,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 968 states. [2022-03-17 23:15:24,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 968 to 842. [2022-03-17 23:15:24,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 842 states, 660 states have (on average 1.3651515151515152) internal successors, (901), 674 states have internal predecessors, (901), 112 states have call successors, (112), 51 states have call predecessors, (112), 69 states have return successors, (141), 124 states have call predecessors, (141), 105 states have call successors, (141) [2022-03-17 23:15:24,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 842 states to 842 states and 1154 transitions. [2022-03-17 23:15:24,426 INFO L78 Accepts]: Start accepts. Automaton has 842 states and 1154 transitions. Word has length 53 [2022-03-17 23:15:24,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 23:15:24,427 INFO L478 AbstractCegarLoop]: Abstraction has 842 states and 1154 transitions. [2022-03-17 23:15:24,427 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 7 states have internal predecessors, (39), 3 states have call successors, (8), 8 states have call predecessors, (8), 4 states have return successors, (6), 5 states have call predecessors, (6), 2 states have call successors, (6) [2022-03-17 23:15:24,427 INFO L276 IsEmpty]: Start isEmpty. Operand 842 states and 1154 transitions. [2022-03-17 23:15:24,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-03-17 23:15:24,429 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 23:15:24,429 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 23:15:24,429 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-03-17 23:15:24,429 INFO L403 AbstractCegarLoop]: === Iteration 20 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 23:15:24,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 23:15:24,429 INFO L85 PathProgramCache]: Analyzing trace with hash 179775437, now seen corresponding path program 1 times [2022-03-17 23:15:24,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 23:15:24,429 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600952255] [2022-03-17 23:15:24,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 23:15:24,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 23:15:24,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:24,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 23:15:24,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:24,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-17 23:15:24,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:24,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-17 23:15:24,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:24,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-03-17 23:15:24,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:24,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-17 23:15:24,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:24,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 23:15:24,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 23:15:24,557 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600952255] [2022-03-17 23:15:24,557 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1600952255] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 23:15:24,558 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 23:15:24,558 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-03-17 23:15:24,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646307882] [2022-03-17 23:15:24,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 23:15:24,558 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-17 23:15:24,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 23:15:24,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-17 23:15:24,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-03-17 23:15:24,559 INFO L87 Difference]: Start difference. First operand 842 states and 1154 transitions. Second operand has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 5 states have internal predecessors, (40), 3 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2022-03-17 23:15:26,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 23:15:26,419 INFO L93 Difference]: Finished difference Result 979 states and 1383 transitions. [2022-03-17 23:15:26,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-17 23:15:26,420 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 5 states have internal predecessors, (40), 3 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) Word has length 52 [2022-03-17 23:15:26,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 23:15:26,423 INFO L225 Difference]: With dead ends: 979 [2022-03-17 23:15:26,423 INFO L226 Difference]: Without dead ends: 943 [2022-03-17 23:15:26,424 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=86, Invalid=186, Unknown=0, NotChecked=0, Total=272 [2022-03-17 23:15:26,424 INFO L912 BasicCegarLoop]: 659 mSDtfsCounter, 1580 mSDsluCounter, 628 mSDsCounter, 0 mSdLazyCounter, 1888 mSolverCounterSat, 454 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1595 SdHoareTripleChecker+Valid, 1287 SdHoareTripleChecker+Invalid, 2342 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 454 IncrementalHoareTripleChecker+Valid, 1888 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-03-17 23:15:26,424 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [1595 Valid, 1287 Invalid, 2342 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [454 Valid, 1888 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-03-17 23:15:26,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 943 states. [2022-03-17 23:15:26,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 943 to 815. [2022-03-17 23:15:26,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 815 states, 638 states have (on average 1.3746081504702194) internal successors, (877), 651 states have internal predecessors, (877), 109 states have call successors, (109), 49 states have call predecessors, (109), 67 states have return successors, (138), 121 states have call predecessors, (138), 102 states have call successors, (138) [2022-03-17 23:15:26,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 815 states to 815 states and 1124 transitions. [2022-03-17 23:15:26,488 INFO L78 Accepts]: Start accepts. Automaton has 815 states and 1124 transitions. Word has length 52 [2022-03-17 23:15:26,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 23:15:26,488 INFO L478 AbstractCegarLoop]: Abstraction has 815 states and 1124 transitions. [2022-03-17 23:15:26,488 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 5 states have internal predecessors, (40), 3 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2022-03-17 23:15:26,488 INFO L276 IsEmpty]: Start isEmpty. Operand 815 states and 1124 transitions. [2022-03-17 23:15:26,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-03-17 23:15:26,490 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 23:15:26,490 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 23:15:26,490 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-03-17 23:15:26,490 INFO L403 AbstractCegarLoop]: === Iteration 21 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 23:15:26,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 23:15:26,490 INFO L85 PathProgramCache]: Analyzing trace with hash 760121073, now seen corresponding path program 1 times [2022-03-17 23:15:26,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 23:15:26,490 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051553370] [2022-03-17 23:15:26,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 23:15:26,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 23:15:26,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:26,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 23:15:26,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:26,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-17 23:15:26,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:26,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-17 23:15:26,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:26,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-17 23:15:26,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:26,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-17 23:15:26,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:26,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-17 23:15:26,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:26,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 23:15:26,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 23:15:26,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051553370] [2022-03-17 23:15:26,715 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2051553370] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 23:15:26,715 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 23:15:26,715 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-03-17 23:15:26,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879479174] [2022-03-17 23:15:26,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 23:15:26,716 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-03-17 23:15:26,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 23:15:26,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-03-17 23:15:26,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2022-03-17 23:15:26,716 INFO L87 Difference]: Start difference. First operand 815 states and 1124 transitions. Second operand has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 7 states have internal predecessors, (40), 3 states have call successors, (8), 8 states have call predecessors, (8), 4 states have return successors, (6), 5 states have call predecessors, (6), 2 states have call successors, (6) [2022-03-17 23:15:29,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 23:15:29,039 INFO L93 Difference]: Finished difference Result 945 states and 1345 transitions. [2022-03-17 23:15:29,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-17 23:15:29,039 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 7 states have internal predecessors, (40), 3 states have call successors, (8), 8 states have call predecessors, (8), 4 states have return successors, (6), 5 states have call predecessors, (6), 2 states have call successors, (6) Word has length 54 [2022-03-17 23:15:29,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 23:15:29,042 INFO L225 Difference]: With dead ends: 945 [2022-03-17 23:15:29,042 INFO L226 Difference]: Without dead ends: 939 [2022-03-17 23:15:29,043 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=106, Invalid=274, Unknown=0, NotChecked=0, Total=380 [2022-03-17 23:15:29,043 INFO L912 BasicCegarLoop]: 630 mSDtfsCounter, 1895 mSDsluCounter, 774 mSDsCounter, 0 mSdLazyCounter, 3117 mSolverCounterSat, 650 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1921 SdHoareTripleChecker+Valid, 1404 SdHoareTripleChecker+Invalid, 3767 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 650 IncrementalHoareTripleChecker+Valid, 3117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-03-17 23:15:29,043 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [1921 Valid, 1404 Invalid, 3767 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [650 Valid, 3117 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-03-17 23:15:29,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 939 states. [2022-03-17 23:15:29,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 939 to 815. [2022-03-17 23:15:29,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 815 states, 638 states have (on average 1.3730407523510972) internal successors, (876), 651 states have internal predecessors, (876), 109 states have call successors, (109), 49 states have call predecessors, (109), 67 states have return successors, (138), 121 states have call predecessors, (138), 102 states have call successors, (138) [2022-03-17 23:15:29,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 815 states to 815 states and 1123 transitions. [2022-03-17 23:15:29,104 INFO L78 Accepts]: Start accepts. Automaton has 815 states and 1123 transitions. Word has length 54 [2022-03-17 23:15:29,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 23:15:29,104 INFO L478 AbstractCegarLoop]: Abstraction has 815 states and 1123 transitions. [2022-03-17 23:15:29,104 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 7 states have internal predecessors, (40), 3 states have call successors, (8), 8 states have call predecessors, (8), 4 states have return successors, (6), 5 states have call predecessors, (6), 2 states have call successors, (6) [2022-03-17 23:15:29,104 INFO L276 IsEmpty]: Start isEmpty. Operand 815 states and 1123 transitions. [2022-03-17 23:15:29,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-03-17 23:15:29,106 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 23:15:29,106 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 23:15:29,106 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-03-17 23:15:29,106 INFO L403 AbstractCegarLoop]: === Iteration 22 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 23:15:29,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 23:15:29,106 INFO L85 PathProgramCache]: Analyzing trace with hash 1504848646, now seen corresponding path program 1 times [2022-03-17 23:15:29,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 23:15:29,107 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650794430] [2022-03-17 23:15:29,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 23:15:29,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 23:15:29,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:29,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 23:15:29,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:29,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-17 23:15:29,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:29,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-17 23:15:29,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:29,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-17 23:15:29,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:29,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-17 23:15:29,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:29,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-17 23:15:29,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:29,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 23:15:29,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 23:15:29,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650794430] [2022-03-17 23:15:29,296 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [650794430] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 23:15:29,296 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 23:15:29,296 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-03-17 23:15:29,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857927670] [2022-03-17 23:15:29,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 23:15:29,296 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-03-17 23:15:29,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 23:15:29,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-03-17 23:15:29,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2022-03-17 23:15:29,297 INFO L87 Difference]: Start difference. First operand 815 states and 1123 transitions. Second operand has 15 states, 15 states have (on average 2.7333333333333334) internal successors, (41), 7 states have internal predecessors, (41), 3 states have call successors, (8), 8 states have call predecessors, (8), 3 states have return successors, (6), 4 states have call predecessors, (6), 2 states have call successors, (6) [2022-03-17 23:15:31,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 23:15:31,345 INFO L93 Difference]: Finished difference Result 966 states and 1372 transitions. [2022-03-17 23:15:31,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-03-17 23:15:31,345 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.7333333333333334) internal successors, (41), 7 states have internal predecessors, (41), 3 states have call successors, (8), 8 states have call predecessors, (8), 3 states have return successors, (6), 4 states have call predecessors, (6), 2 states have call successors, (6) Word has length 55 [2022-03-17 23:15:31,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 23:15:31,348 INFO L225 Difference]: With dead ends: 966 [2022-03-17 23:15:31,349 INFO L226 Difference]: Without dead ends: 926 [2022-03-17 23:15:31,350 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=62, Invalid=280, Unknown=0, NotChecked=0, Total=342 [2022-03-17 23:15:31,351 INFO L912 BasicCegarLoop]: 678 mSDtfsCounter, 1069 mSDsluCounter, 1798 mSDsCounter, 0 mSdLazyCounter, 4451 mSolverCounterSat, 436 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1072 SdHoareTripleChecker+Valid, 2476 SdHoareTripleChecker+Invalid, 4887 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 436 IncrementalHoareTripleChecker+Valid, 4451 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-03-17 23:15:31,351 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [1072 Valid, 2476 Invalid, 4887 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [436 Valid, 4451 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-03-17 23:15:31,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 926 states. [2022-03-17 23:15:31,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 926 to 806. [2022-03-17 23:15:31,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 806 states, 631 states have (on average 1.3565768621236134) internal successors, (856), 644 states have internal predecessors, (856), 107 states have call successors, (107), 49 states have call predecessors, (107), 67 states have return successors, (136), 119 states have call predecessors, (136), 100 states have call successors, (136) [2022-03-17 23:15:31,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 806 states to 806 states and 1099 transitions. [2022-03-17 23:15:31,418 INFO L78 Accepts]: Start accepts. Automaton has 806 states and 1099 transitions. Word has length 55 [2022-03-17 23:15:31,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 23:15:31,418 INFO L478 AbstractCegarLoop]: Abstraction has 806 states and 1099 transitions. [2022-03-17 23:15:31,418 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.7333333333333334) internal successors, (41), 7 states have internal predecessors, (41), 3 states have call successors, (8), 8 states have call predecessors, (8), 3 states have return successors, (6), 4 states have call predecessors, (6), 2 states have call successors, (6) [2022-03-17 23:15:31,418 INFO L276 IsEmpty]: Start isEmpty. Operand 806 states and 1099 transitions. [2022-03-17 23:15:31,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-03-17 23:15:31,420 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 23:15:31,420 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 23:15:31,420 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-03-17 23:15:31,420 INFO L403 AbstractCegarLoop]: === Iteration 23 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 23:15:31,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 23:15:31,420 INFO L85 PathProgramCache]: Analyzing trace with hash -755849646, now seen corresponding path program 1 times [2022-03-17 23:15:31,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 23:15:31,420 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273058403] [2022-03-17 23:15:31,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 23:15:31,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 23:15:31,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:31,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 23:15:31,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:31,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-17 23:15:31,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:31,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-17 23:15:31,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:31,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-03-17 23:15:31,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:31,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-17 23:15:31,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:31,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-17 23:15:31,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:31,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 23:15:31,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 23:15:31,645 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273058403] [2022-03-17 23:15:31,645 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [273058403] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 23:15:31,645 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 23:15:31,645 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-03-17 23:15:31,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059179027] [2022-03-17 23:15:31,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 23:15:31,647 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-03-17 23:15:31,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 23:15:31,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-03-17 23:15:31,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2022-03-17 23:15:31,647 INFO L87 Difference]: Start difference. First operand 806 states and 1099 transitions. Second operand has 15 states, 15 states have (on average 2.8) internal successors, (42), 7 states have internal predecessors, (42), 2 states have call successors, (8), 7 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 1 states have call successors, (6) [2022-03-17 23:15:33,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 23:15:33,921 INFO L93 Difference]: Finished difference Result 942 states and 1326 transitions. [2022-03-17 23:15:33,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-17 23:15:33,921 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.8) internal successors, (42), 7 states have internal predecessors, (42), 2 states have call successors, (8), 7 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 1 states have call successors, (6) Word has length 56 [2022-03-17 23:15:33,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 23:15:33,924 INFO L225 Difference]: With dead ends: 942 [2022-03-17 23:15:33,924 INFO L226 Difference]: Without dead ends: 924 [2022-03-17 23:15:33,925 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2022-03-17 23:15:33,925 INFO L912 BasicCegarLoop]: 673 mSDtfsCounter, 338 mSDsluCounter, 2155 mSDsCounter, 0 mSdLazyCounter, 5915 mSolverCounterSat, 139 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 340 SdHoareTripleChecker+Valid, 2828 SdHoareTripleChecker+Invalid, 6054 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 139 IncrementalHoareTripleChecker+Valid, 5915 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-03-17 23:15:33,929 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [340 Valid, 2828 Invalid, 6054 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [139 Valid, 5915 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-03-17 23:15:33,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 924 states. [2022-03-17 23:15:33,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 924 to 804. [2022-03-17 23:15:33,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 804 states, 630 states have (on average 1.3555555555555556) internal successors, (854), 643 states have internal predecessors, (854), 106 states have call successors, (106), 49 states have call predecessors, (106), 67 states have return successors, (135), 118 states have call predecessors, (135), 99 states have call successors, (135) [2022-03-17 23:15:33,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 804 states to 804 states and 1095 transitions. [2022-03-17 23:15:33,999 INFO L78 Accepts]: Start accepts. Automaton has 804 states and 1095 transitions. Word has length 56 [2022-03-17 23:15:33,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 23:15:33,999 INFO L478 AbstractCegarLoop]: Abstraction has 804 states and 1095 transitions. [2022-03-17 23:15:34,000 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.8) internal successors, (42), 7 states have internal predecessors, (42), 2 states have call successors, (8), 7 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 1 states have call successors, (6) [2022-03-17 23:15:34,000 INFO L276 IsEmpty]: Start isEmpty. Operand 804 states and 1095 transitions. [2022-03-17 23:15:34,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-03-17 23:15:34,002 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 23:15:34,002 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 23:15:34,002 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-03-17 23:15:34,002 INFO L403 AbstractCegarLoop]: === Iteration 24 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 23:15:34,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 23:15:34,003 INFO L85 PathProgramCache]: Analyzing trace with hash -303401055, now seen corresponding path program 1 times [2022-03-17 23:15:34,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 23:15:34,003 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019963171] [2022-03-17 23:15:34,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 23:15:34,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 23:15:34,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:34,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 23:15:34,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:34,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-17 23:15:34,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:34,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-17 23:15:34,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:34,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-03-17 23:15:34,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:34,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-17 23:15:34,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:34,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-17 23:15:34,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:34,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 23:15:34,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 23:15:34,170 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019963171] [2022-03-17 23:15:34,172 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1019963171] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 23:15:34,172 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 23:15:34,172 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-03-17 23:15:34,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707692750] [2022-03-17 23:15:34,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 23:15:34,172 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-03-17 23:15:34,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 23:15:34,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-03-17 23:15:34,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2022-03-17 23:15:34,173 INFO L87 Difference]: Start difference. First operand 804 states and 1095 transitions. Second operand has 15 states, 15 states have (on average 2.7333333333333334) internal successors, (41), 7 states have internal predecessors, (41), 2 states have call successors, (8), 7 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 1 states have call successors, (6) [2022-03-17 23:15:36,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 23:15:36,670 INFO L93 Difference]: Finished difference Result 937 states and 1319 transitions. [2022-03-17 23:15:36,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-17 23:15:36,670 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.7333333333333334) internal successors, (41), 7 states have internal predecessors, (41), 2 states have call successors, (8), 7 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 1 states have call successors, (6) Word has length 55 [2022-03-17 23:15:36,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 23:15:36,673 INFO L225 Difference]: With dead ends: 937 [2022-03-17 23:15:36,673 INFO L226 Difference]: Without dead ends: 919 [2022-03-17 23:15:36,674 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2022-03-17 23:15:36,674 INFO L912 BasicCegarLoop]: 657 mSDtfsCounter, 350 mSDsluCounter, 2016 mSDsCounter, 0 mSdLazyCounter, 5447 mSolverCounterSat, 140 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 352 SdHoareTripleChecker+Valid, 2673 SdHoareTripleChecker+Invalid, 5587 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 140 IncrementalHoareTripleChecker+Valid, 5447 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-03-17 23:15:36,674 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [352 Valid, 2673 Invalid, 5587 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [140 Valid, 5447 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-03-17 23:15:36,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 919 states. [2022-03-17 23:15:36,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 919 to 799. [2022-03-17 23:15:36,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 799 states, 627 states have (on average 1.3556618819776713) internal successors, (850), 640 states have internal predecessors, (850), 105 states have call successors, (105), 49 states have call predecessors, (105), 66 states have return successors, (133), 116 states have call predecessors, (133), 98 states have call successors, (133) [2022-03-17 23:15:36,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 799 states to 799 states and 1088 transitions. [2022-03-17 23:15:36,751 INFO L78 Accepts]: Start accepts. Automaton has 799 states and 1088 transitions. Word has length 55 [2022-03-17 23:15:36,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 23:15:36,752 INFO L478 AbstractCegarLoop]: Abstraction has 799 states and 1088 transitions. [2022-03-17 23:15:36,752 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.7333333333333334) internal successors, (41), 7 states have internal predecessors, (41), 2 states have call successors, (8), 7 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 1 states have call successors, (6) [2022-03-17 23:15:36,752 INFO L276 IsEmpty]: Start isEmpty. Operand 799 states and 1088 transitions. [2022-03-17 23:15:36,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-03-17 23:15:36,753 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 23:15:36,753 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 23:15:36,753 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-03-17 23:15:36,753 INFO L403 AbstractCegarLoop]: === Iteration 25 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 23:15:36,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 23:15:36,754 INFO L85 PathProgramCache]: Analyzing trace with hash 1335002991, now seen corresponding path program 1 times [2022-03-17 23:15:36,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 23:15:36,754 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980026250] [2022-03-17 23:15:36,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 23:15:36,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 23:15:36,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:36,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 23:15:36,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:36,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-17 23:15:36,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:36,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-17 23:15:36,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:36,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-17 23:15:36,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:36,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-03-17 23:15:36,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:36,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-03-17 23:15:36,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:36,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 23:15:36,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 23:15:36,896 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980026250] [2022-03-17 23:15:36,897 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1980026250] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 23:15:36,897 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 23:15:36,897 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-03-17 23:15:36,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372082051] [2022-03-17 23:15:36,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 23:15:36,897 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-17 23:15:36,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 23:15:36,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-17 23:15:36,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-03-17 23:15:36,898 INFO L87 Difference]: Start difference. First operand 799 states and 1088 transitions. Second operand has 10 states, 10 states have (on average 4.2) internal successors, (42), 4 states have internal predecessors, (42), 3 states have call successors, (8), 8 states have call predecessors, (8), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-03-17 23:15:38,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 23:15:38,900 INFO L93 Difference]: Finished difference Result 984 states and 1370 transitions. [2022-03-17 23:15:38,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-17 23:15:38,900 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.2) internal successors, (42), 4 states have internal predecessors, (42), 3 states have call successors, (8), 8 states have call predecessors, (8), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 56 [2022-03-17 23:15:38,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 23:15:38,903 INFO L225 Difference]: With dead ends: 984 [2022-03-17 23:15:38,903 INFO L226 Difference]: Without dead ends: 941 [2022-03-17 23:15:38,904 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2022-03-17 23:15:38,904 INFO L912 BasicCegarLoop]: 678 mSDtfsCounter, 1160 mSDsluCounter, 665 mSDsCounter, 0 mSdLazyCounter, 2928 mSolverCounterSat, 242 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1170 SdHoareTripleChecker+Valid, 1343 SdHoareTripleChecker+Invalid, 3170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 242 IncrementalHoareTripleChecker+Valid, 2928 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-03-17 23:15:38,904 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [1170 Valid, 1343 Invalid, 3170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [242 Valid, 2928 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-03-17 23:15:38,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 941 states. [2022-03-17 23:15:38,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 941 to 799. [2022-03-17 23:15:38,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 799 states, 627 states have (on average 1.354066985645933) internal successors, (849), 640 states have internal predecessors, (849), 105 states have call successors, (105), 49 states have call predecessors, (105), 66 states have return successors, (133), 116 states have call predecessors, (133), 98 states have call successors, (133) [2022-03-17 23:15:38,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 799 states to 799 states and 1087 transitions. [2022-03-17 23:15:38,964 INFO L78 Accepts]: Start accepts. Automaton has 799 states and 1087 transitions. Word has length 56 [2022-03-17 23:15:38,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 23:15:38,964 INFO L478 AbstractCegarLoop]: Abstraction has 799 states and 1087 transitions. [2022-03-17 23:15:38,964 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.2) internal successors, (42), 4 states have internal predecessors, (42), 3 states have call successors, (8), 8 states have call predecessors, (8), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-03-17 23:15:38,964 INFO L276 IsEmpty]: Start isEmpty. Operand 799 states and 1087 transitions. [2022-03-17 23:15:38,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-03-17 23:15:38,965 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 23:15:38,965 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 23:15:38,966 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-03-17 23:15:38,966 INFO L403 AbstractCegarLoop]: === Iteration 26 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 23:15:38,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 23:15:38,966 INFO L85 PathProgramCache]: Analyzing trace with hash 1948386428, now seen corresponding path program 1 times [2022-03-17 23:15:38,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 23:15:38,966 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175043602] [2022-03-17 23:15:38,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 23:15:38,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 23:15:38,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:39,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 23:15:39,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:39,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-17 23:15:39,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:39,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-17 23:15:39,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:39,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-03-17 23:15:39,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:39,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-17 23:15:39,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:39,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-17 23:15:39,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:39,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 23:15:39,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 23:15:39,108 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175043602] [2022-03-17 23:15:39,108 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1175043602] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 23:15:39,108 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 23:15:39,108 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-17 23:15:39,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486981484] [2022-03-17 23:15:39,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 23:15:39,108 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-17 23:15:39,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 23:15:39,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-17 23:15:39,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-03-17 23:15:39,109 INFO L87 Difference]: Start difference. First operand 799 states and 1087 transitions. Second operand has 8 states, 8 states have (on average 5.375) internal successors, (43), 3 states have internal predecessors, (43), 3 states have call successors, (12), 8 states have call predecessors, (12), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2022-03-17 23:15:40,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 23:15:40,497 INFO L93 Difference]: Finished difference Result 1186 states and 1642 transitions. [2022-03-17 23:15:40,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-17 23:15:40,497 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 3 states have internal predecessors, (43), 3 states have call successors, (12), 8 states have call predecessors, (12), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) Word has length 61 [2022-03-17 23:15:40,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 23:15:40,516 INFO L225 Difference]: With dead ends: 1186 [2022-03-17 23:15:40,516 INFO L226 Difference]: Without dead ends: 1023 [2022-03-17 23:15:40,517 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 3 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2022-03-17 23:15:40,517 INFO L912 BasicCegarLoop]: 663 mSDtfsCounter, 677 mSDsluCounter, 578 mSDsCounter, 0 mSdLazyCounter, 1342 mSolverCounterSat, 228 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 699 SdHoareTripleChecker+Valid, 1241 SdHoareTripleChecker+Invalid, 1570 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 228 IncrementalHoareTripleChecker+Valid, 1342 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-03-17 23:15:40,519 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [699 Valid, 1241 Invalid, 1570 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [228 Valid, 1342 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-03-17 23:15:40,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1023 states. [2022-03-17 23:15:40,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1023 to 840. [2022-03-17 23:15:40,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 840 states, 660 states have (on average 1.3424242424242425) internal successors, (886), 672 states have internal predecessors, (886), 106 states have call successors, (106), 53 states have call predecessors, (106), 73 states have return successors, (135), 121 states have call predecessors, (135), 100 states have call successors, (135) [2022-03-17 23:15:40,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 840 states to 840 states and 1127 transitions. [2022-03-17 23:15:40,621 INFO L78 Accepts]: Start accepts. Automaton has 840 states and 1127 transitions. Word has length 61 [2022-03-17 23:15:40,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 23:15:40,621 INFO L478 AbstractCegarLoop]: Abstraction has 840 states and 1127 transitions. [2022-03-17 23:15:40,621 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 3 states have internal predecessors, (43), 3 states have call successors, (12), 8 states have call predecessors, (12), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2022-03-17 23:15:40,621 INFO L276 IsEmpty]: Start isEmpty. Operand 840 states and 1127 transitions. [2022-03-17 23:15:40,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-03-17 23:15:40,623 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 23:15:40,623 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 23:15:40,623 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-03-17 23:15:40,623 INFO L403 AbstractCegarLoop]: === Iteration 27 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 23:15:40,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 23:15:40,623 INFO L85 PathProgramCache]: Analyzing trace with hash -1337798748, now seen corresponding path program 1 times [2022-03-17 23:15:40,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 23:15:40,623 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493323144] [2022-03-17 23:15:40,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 23:15:40,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 23:15:40,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:40,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 23:15:40,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:40,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-17 23:15:40,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:40,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-17 23:15:40,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:40,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-17 23:15:40,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:40,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-17 23:15:40,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:40,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-03-17 23:15:40,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:40,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-17 23:15:40,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:40,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 23:15:40,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 23:15:40,841 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493323144] [2022-03-17 23:15:40,841 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [493323144] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 23:15:40,841 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 23:15:40,841 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-17 23:15:40,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522089744] [2022-03-17 23:15:40,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 23:15:40,841 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-17 23:15:40,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 23:15:40,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-17 23:15:40,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=327, Unknown=0, NotChecked=0, Total=380 [2022-03-17 23:15:40,842 INFO L87 Difference]: Start difference. First operand 840 states and 1127 transitions. Second operand has 20 states, 19 states have (on average 2.4210526315789473) internal successors, (46), 10 states have internal predecessors, (46), 4 states have call successors, (9), 9 states have call predecessors, (9), 4 states have return successors, (7), 5 states have call predecessors, (7), 3 states have call successors, (7) [2022-03-17 23:15:43,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 23:15:43,450 INFO L93 Difference]: Finished difference Result 1008 states and 1399 transitions. [2022-03-17 23:15:43,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-03-17 23:15:43,450 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 2.4210526315789473) internal successors, (46), 10 states have internal predecessors, (46), 4 states have call successors, (9), 9 states have call predecessors, (9), 4 states have return successors, (7), 5 states have call predecessors, (7), 3 states have call successors, (7) Word has length 62 [2022-03-17 23:15:43,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 23:15:43,452 INFO L225 Difference]: With dead ends: 1008 [2022-03-17 23:15:43,452 INFO L226 Difference]: Without dead ends: 984 [2022-03-17 23:15:43,453 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=99, Invalid=603, Unknown=0, NotChecked=0, Total=702 [2022-03-17 23:15:43,453 INFO L912 BasicCegarLoop]: 655 mSDtfsCounter, 1013 mSDsluCounter, 2764 mSDsCounter, 0 mSdLazyCounter, 5964 mSolverCounterSat, 426 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1019 SdHoareTripleChecker+Valid, 3419 SdHoareTripleChecker+Invalid, 6390 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 426 IncrementalHoareTripleChecker+Valid, 5964 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-03-17 23:15:43,453 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [1019 Valid, 3419 Invalid, 6390 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [426 Valid, 5964 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-03-17 23:15:43,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 984 states. [2022-03-17 23:15:43,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 984 to 838. [2022-03-17 23:15:43,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 838 states, 659 states have (on average 1.3414264036418817) internal successors, (884), 671 states have internal predecessors, (884), 105 states have call successors, (105), 53 states have call predecessors, (105), 73 states have return successors, (134), 120 states have call predecessors, (134), 99 states have call successors, (134) [2022-03-17 23:15:43,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 838 states to 838 states and 1123 transitions. [2022-03-17 23:15:43,513 INFO L78 Accepts]: Start accepts. Automaton has 838 states and 1123 transitions. Word has length 62 [2022-03-17 23:15:43,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 23:15:43,513 INFO L478 AbstractCegarLoop]: Abstraction has 838 states and 1123 transitions. [2022-03-17 23:15:43,513 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 2.4210526315789473) internal successors, (46), 10 states have internal predecessors, (46), 4 states have call successors, (9), 9 states have call predecessors, (9), 4 states have return successors, (7), 5 states have call predecessors, (7), 3 states have call successors, (7) [2022-03-17 23:15:43,513 INFO L276 IsEmpty]: Start isEmpty. Operand 838 states and 1123 transitions. [2022-03-17 23:15:43,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-03-17 23:15:43,515 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 23:15:43,515 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 23:15:43,515 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-03-17 23:15:43,515 INFO L403 AbstractCegarLoop]: === Iteration 28 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 23:15:43,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 23:15:43,515 INFO L85 PathProgramCache]: Analyzing trace with hash 1214008405, now seen corresponding path program 1 times [2022-03-17 23:15:43,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 23:15:43,515 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753537080] [2022-03-17 23:15:43,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 23:15:43,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 23:15:43,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:43,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 23:15:43,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:43,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-17 23:15:43,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:43,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-17 23:15:43,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:43,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-17 23:15:43,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:43,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-17 23:15:43,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:43,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-17 23:15:43,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:43,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-17 23:15:43,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:43,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 23:15:43,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 23:15:43,755 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753537080] [2022-03-17 23:15:43,755 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [753537080] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 23:15:43,755 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 23:15:43,755 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-17 23:15:43,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091370372] [2022-03-17 23:15:43,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 23:15:43,756 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-17 23:15:43,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 23:15:43,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-17 23:15:43,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=327, Unknown=0, NotChecked=0, Total=380 [2022-03-17 23:15:43,756 INFO L87 Difference]: Start difference. First operand 838 states and 1123 transitions. Second operand has 20 states, 19 states have (on average 2.263157894736842) internal successors, (43), 10 states have internal predecessors, (43), 4 states have call successors, (9), 9 states have call predecessors, (9), 4 states have return successors, (7), 5 states have call predecessors, (7), 3 states have call successors, (7) [2022-03-17 23:15:46,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 23:15:46,422 INFO L93 Difference]: Finished difference Result 1006 states and 1395 transitions. [2022-03-17 23:15:46,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-03-17 23:15:46,422 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 2.263157894736842) internal successors, (43), 10 states have internal predecessors, (43), 4 states have call successors, (9), 9 states have call predecessors, (9), 4 states have return successors, (7), 5 states have call predecessors, (7), 3 states have call successors, (7) Word has length 59 [2022-03-17 23:15:46,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 23:15:46,425 INFO L225 Difference]: With dead ends: 1006 [2022-03-17 23:15:46,425 INFO L226 Difference]: Without dead ends: 980 [2022-03-17 23:15:46,425 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=99, Invalid=603, Unknown=0, NotChecked=0, Total=702 [2022-03-17 23:15:46,426 INFO L912 BasicCegarLoop]: 634 mSDtfsCounter, 1331 mSDsluCounter, 2561 mSDsCounter, 0 mSdLazyCounter, 6274 mSolverCounterSat, 550 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1335 SdHoareTripleChecker+Valid, 3195 SdHoareTripleChecker+Invalid, 6824 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 550 IncrementalHoareTripleChecker+Valid, 6274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-03-17 23:15:46,426 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [1335 Valid, 3195 Invalid, 6824 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [550 Valid, 6274 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-03-17 23:15:46,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 980 states. [2022-03-17 23:15:46,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 980 to 837. [2022-03-17 23:15:46,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 837 states, 658 states have (on average 1.3267477203647415) internal successors, (873), 670 states have internal predecessors, (873), 105 states have call successors, (105), 53 states have call predecessors, (105), 73 states have return successors, (134), 120 states have call predecessors, (134), 99 states have call successors, (134) [2022-03-17 23:15:46,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 837 states to 837 states and 1112 transitions. [2022-03-17 23:15:46,497 INFO L78 Accepts]: Start accepts. Automaton has 837 states and 1112 transitions. Word has length 59 [2022-03-17 23:15:46,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 23:15:46,497 INFO L478 AbstractCegarLoop]: Abstraction has 837 states and 1112 transitions. [2022-03-17 23:15:46,497 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 2.263157894736842) internal successors, (43), 10 states have internal predecessors, (43), 4 states have call successors, (9), 9 states have call predecessors, (9), 4 states have return successors, (7), 5 states have call predecessors, (7), 3 states have call successors, (7) [2022-03-17 23:15:46,497 INFO L276 IsEmpty]: Start isEmpty. Operand 837 states and 1112 transitions. [2022-03-17 23:15:46,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-03-17 23:15:46,499 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 23:15:46,499 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 23:15:46,499 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-03-17 23:15:46,499 INFO L403 AbstractCegarLoop]: === Iteration 29 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 23:15:46,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 23:15:46,499 INFO L85 PathProgramCache]: Analyzing trace with hash -55485367, now seen corresponding path program 1 times [2022-03-17 23:15:46,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 23:15:46,499 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820404313] [2022-03-17 23:15:46,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 23:15:46,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 23:15:46,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:46,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 23:15:46,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:46,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-17 23:15:46,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:46,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-17 23:15:46,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:46,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-17 23:15:46,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:46,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-17 23:15:46,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:46,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-17 23:15:46,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:46,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 23:15:46,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 23:15:46,766 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820404313] [2022-03-17 23:15:46,766 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [820404313] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 23:15:46,767 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 23:15:46,767 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-03-17 23:15:46,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195523341] [2022-03-17 23:15:46,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 23:15:46,767 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-03-17 23:15:46,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 23:15:46,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-03-17 23:15:46,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2022-03-17 23:15:46,768 INFO L87 Difference]: Start difference. First operand 837 states and 1112 transitions. Second operand has 16 states, 16 states have (on average 2.75) internal successors, (44), 8 states have internal predecessors, (44), 2 states have call successors, (8), 7 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 1 states have call successors, (6) [2022-03-17 23:15:49,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 23:15:49,043 INFO L93 Difference]: Finished difference Result 995 states and 1369 transitions. [2022-03-17 23:15:49,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-03-17 23:15:49,044 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.75) internal successors, (44), 8 states have internal predecessors, (44), 2 states have call successors, (8), 7 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 1 states have call successors, (6) Word has length 58 [2022-03-17 23:15:49,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 23:15:49,046 INFO L225 Difference]: With dead ends: 995 [2022-03-17 23:15:49,046 INFO L226 Difference]: Without dead ends: 975 [2022-03-17 23:15:49,047 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2022-03-17 23:15:49,047 INFO L912 BasicCegarLoop]: 649 mSDtfsCounter, 324 mSDsluCounter, 2275 mSDsCounter, 0 mSdLazyCounter, 5838 mSolverCounterSat, 135 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 326 SdHoareTripleChecker+Valid, 2924 SdHoareTripleChecker+Invalid, 5973 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 135 IncrementalHoareTripleChecker+Valid, 5838 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-03-17 23:15:49,047 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [326 Valid, 2924 Invalid, 5973 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [135 Valid, 5838 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-03-17 23:15:49,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 975 states. [2022-03-17 23:15:49,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 975 to 834. [2022-03-17 23:15:49,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 834 states, 656 states have (on average 1.326219512195122) internal successors, (870), 668 states have internal predecessors, (870), 104 states have call successors, (104), 53 states have call predecessors, (104), 73 states have return successors, (133), 119 states have call predecessors, (133), 98 states have call successors, (133) [2022-03-17 23:15:49,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 834 states to 834 states and 1107 transitions. [2022-03-17 23:15:49,106 INFO L78 Accepts]: Start accepts. Automaton has 834 states and 1107 transitions. Word has length 58 [2022-03-17 23:15:49,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 23:15:49,107 INFO L478 AbstractCegarLoop]: Abstraction has 834 states and 1107 transitions. [2022-03-17 23:15:49,107 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.75) internal successors, (44), 8 states have internal predecessors, (44), 2 states have call successors, (8), 7 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 1 states have call successors, (6) [2022-03-17 23:15:49,107 INFO L276 IsEmpty]: Start isEmpty. Operand 834 states and 1107 transitions. [2022-03-17 23:15:49,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-03-17 23:15:49,108 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 23:15:49,108 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 23:15:49,108 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-03-17 23:15:49,108 INFO L403 AbstractCegarLoop]: === Iteration 30 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 23:15:49,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 23:15:49,109 INFO L85 PathProgramCache]: Analyzing trace with hash -57775299, now seen corresponding path program 1 times [2022-03-17 23:15:49,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 23:15:49,109 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349574224] [2022-03-17 23:15:49,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 23:15:49,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 23:15:49,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:49,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 23:15:49,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:49,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-17 23:15:49,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:49,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-17 23:15:49,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:49,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-17 23:15:49,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:49,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-17 23:15:49,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:49,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-17 23:15:49,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:49,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-17 23:15:49,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:49,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 23:15:49,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 23:15:49,266 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349574224] [2022-03-17 23:15:49,266 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [349574224] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 23:15:49,266 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 23:15:49,267 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-03-17 23:15:49,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72703332] [2022-03-17 23:15:49,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 23:15:49,267 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-17 23:15:49,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 23:15:49,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-17 23:15:49,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-03-17 23:15:49,267 INFO L87 Difference]: Start difference. First operand 834 states and 1107 transitions. Second operand has 11 states, 11 states have (on average 4.0) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-03-17 23:15:50,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 23:15:50,876 INFO L93 Difference]: Finished difference Result 1141 states and 1604 transitions. [2022-03-17 23:15:50,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-17 23:15:50,876 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.0) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 60 [2022-03-17 23:15:50,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 23:15:50,879 INFO L225 Difference]: With dead ends: 1141 [2022-03-17 23:15:50,879 INFO L226 Difference]: Without dead ends: 1036 [2022-03-17 23:15:50,880 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2022-03-17 23:15:50,880 INFO L912 BasicCegarLoop]: 628 mSDtfsCounter, 431 mSDsluCounter, 721 mSDsCounter, 0 mSdLazyCounter, 1619 mSolverCounterSat, 178 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 433 SdHoareTripleChecker+Valid, 1349 SdHoareTripleChecker+Invalid, 1797 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 178 IncrementalHoareTripleChecker+Valid, 1619 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-03-17 23:15:50,880 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [433 Valid, 1349 Invalid, 1797 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [178 Valid, 1619 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-03-17 23:15:50,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1036 states. [2022-03-17 23:15:50,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1036 to 841. [2022-03-17 23:15:50,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 841 states, 661 states have (on average 1.3267776096822996) internal successors, (877), 674 states have internal predecessors, (877), 105 states have call successors, (105), 53 states have call predecessors, (105), 74 states have return successors, (140), 120 states have call predecessors, (140), 99 states have call successors, (140) [2022-03-17 23:15:50,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 841 states to 841 states and 1122 transitions. [2022-03-17 23:15:50,965 INFO L78 Accepts]: Start accepts. Automaton has 841 states and 1122 transitions. Word has length 60 [2022-03-17 23:15:50,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 23:15:50,965 INFO L478 AbstractCegarLoop]: Abstraction has 841 states and 1122 transitions. [2022-03-17 23:15:50,965 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.0) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-03-17 23:15:50,965 INFO L276 IsEmpty]: Start isEmpty. Operand 841 states and 1122 transitions. [2022-03-17 23:15:50,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-03-17 23:15:50,966 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 23:15:50,966 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 23:15:50,966 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-03-17 23:15:50,967 INFO L403 AbstractCegarLoop]: === Iteration 31 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 23:15:50,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 23:15:50,967 INFO L85 PathProgramCache]: Analyzing trace with hash -2067879140, now seen corresponding path program 1 times [2022-03-17 23:15:50,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 23:15:50,967 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545061885] [2022-03-17 23:15:50,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 23:15:50,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 23:15:50,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:51,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 23:15:51,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:51,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-17 23:15:51,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:51,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-17 23:15:51,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:51,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-17 23:15:51,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:51,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-17 23:15:51,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:51,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-17 23:15:51,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:51,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-17 23:15:51,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:51,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 23:15:51,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 23:15:51,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1545061885] [2022-03-17 23:15:51,163 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1545061885] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 23:15:51,163 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 23:15:51,163 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-03-17 23:15:51,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559835108] [2022-03-17 23:15:51,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 23:15:51,164 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-03-17 23:15:51,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 23:15:51,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-03-17 23:15:51,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2022-03-17 23:15:51,164 INFO L87 Difference]: Start difference. First operand 841 states and 1122 transitions. Second operand has 16 states, 16 states have (on average 2.75) internal successors, (44), 7 states have internal predecessors, (44), 3 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 4 states have call predecessors, (7), 2 states have call successors, (7) [2022-03-17 23:15:53,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 23:15:53,192 INFO L93 Difference]: Finished difference Result 1008 states and 1400 transitions. [2022-03-17 23:15:53,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-03-17 23:15:53,192 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.75) internal successors, (44), 7 states have internal predecessors, (44), 3 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 4 states have call predecessors, (7), 2 states have call successors, (7) Word has length 60 [2022-03-17 23:15:53,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 23:15:53,195 INFO L225 Difference]: With dead ends: 1008 [2022-03-17 23:15:53,195 INFO L226 Difference]: Without dead ends: 983 [2022-03-17 23:15:53,195 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2022-03-17 23:15:53,195 INFO L912 BasicCegarLoop]: 649 mSDtfsCounter, 981 mSDsluCounter, 1942 mSDsCounter, 0 mSdLazyCounter, 4405 mSolverCounterSat, 396 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 984 SdHoareTripleChecker+Valid, 2591 SdHoareTripleChecker+Invalid, 4801 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 396 IncrementalHoareTripleChecker+Valid, 4405 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-03-17 23:15:53,196 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [984 Valid, 2591 Invalid, 4801 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [396 Valid, 4405 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-03-17 23:15:53,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 983 states. [2022-03-17 23:15:53,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 983 to 839. [2022-03-17 23:15:53,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 839 states, 660 states have (on average 1.3257575757575757) internal successors, (875), 673 states have internal predecessors, (875), 104 states have call successors, (104), 53 states have call predecessors, (104), 74 states have return successors, (139), 119 states have call predecessors, (139), 98 states have call successors, (139) [2022-03-17 23:15:53,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 839 states to 839 states and 1118 transitions. [2022-03-17 23:15:53,255 INFO L78 Accepts]: Start accepts. Automaton has 839 states and 1118 transitions. Word has length 60 [2022-03-17 23:15:53,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 23:15:53,255 INFO L478 AbstractCegarLoop]: Abstraction has 839 states and 1118 transitions. [2022-03-17 23:15:53,255 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.75) internal successors, (44), 7 states have internal predecessors, (44), 3 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 4 states have call predecessors, (7), 2 states have call successors, (7) [2022-03-17 23:15:53,255 INFO L276 IsEmpty]: Start isEmpty. Operand 839 states and 1118 transitions. [2022-03-17 23:15:53,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-03-17 23:15:53,256 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 23:15:53,257 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 23:15:53,257 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-03-17 23:15:53,257 INFO L403 AbstractCegarLoop]: === Iteration 32 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 23:15:53,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 23:15:53,257 INFO L85 PathProgramCache]: Analyzing trace with hash 1557615113, now seen corresponding path program 1 times [2022-03-17 23:15:53,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 23:15:53,257 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958070930] [2022-03-17 23:15:53,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 23:15:53,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 23:15:53,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:53,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 23:15:53,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:53,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-17 23:15:53,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:53,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-17 23:15:53,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:53,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-17 23:15:53,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:53,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-17 23:15:53,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:53,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-17 23:15:53,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:53,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 23:15:53,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 23:15:53,447 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958070930] [2022-03-17 23:15:53,447 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1958070930] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 23:15:53,447 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 23:15:53,447 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-03-17 23:15:53,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306331022] [2022-03-17 23:15:53,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 23:15:53,448 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-03-17 23:15:53,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 23:15:53,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-03-17 23:15:53,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2022-03-17 23:15:53,448 INFO L87 Difference]: Start difference. First operand 839 states and 1118 transitions. Second operand has 16 states, 16 states have (on average 2.8125) internal successors, (45), 8 states have internal predecessors, (45), 3 states have call successors, (8), 8 states have call predecessors, (8), 3 states have return successors, (6), 4 states have call predecessors, (6), 2 states have call successors, (6) [2022-03-17 23:15:55,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 23:15:55,152 INFO L93 Difference]: Finished difference Result 1036 states and 1425 transitions. [2022-03-17 23:15:55,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-03-17 23:15:55,152 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.8125) internal successors, (45), 8 states have internal predecessors, (45), 3 states have call successors, (8), 8 states have call predecessors, (8), 3 states have return successors, (6), 4 states have call predecessors, (6), 2 states have call successors, (6) Word has length 59 [2022-03-17 23:15:55,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 23:15:55,155 INFO L225 Difference]: With dead ends: 1036 [2022-03-17 23:15:55,155 INFO L226 Difference]: Without dead ends: 968 [2022-03-17 23:15:55,156 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=92, Invalid=414, Unknown=0, NotChecked=0, Total=506 [2022-03-17 23:15:55,156 INFO L912 BasicCegarLoop]: 620 mSDtfsCounter, 963 mSDsluCounter, 1969 mSDsCounter, 0 mSdLazyCounter, 4804 mSolverCounterSat, 406 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 967 SdHoareTripleChecker+Valid, 2589 SdHoareTripleChecker+Invalid, 5210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 406 IncrementalHoareTripleChecker+Valid, 4804 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-03-17 23:15:55,157 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [967 Valid, 2589 Invalid, 5210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [406 Valid, 4804 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-03-17 23:15:55,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 968 states. [2022-03-17 23:15:55,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 968 to 827. [2022-03-17 23:15:55,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 827 states, 651 states have (on average 1.3210445468509984) internal successors, (860), 664 states have internal predecessors, (860), 101 states have call successors, (101), 53 states have call predecessors, (101), 74 states have return successors, (136), 116 states have call predecessors, (136), 95 states have call successors, (136) [2022-03-17 23:15:55,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 827 states to 827 states and 1097 transitions. [2022-03-17 23:15:55,227 INFO L78 Accepts]: Start accepts. Automaton has 827 states and 1097 transitions. Word has length 59 [2022-03-17 23:15:55,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 23:15:55,227 INFO L478 AbstractCegarLoop]: Abstraction has 827 states and 1097 transitions. [2022-03-17 23:15:55,228 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.8125) internal successors, (45), 8 states have internal predecessors, (45), 3 states have call successors, (8), 8 states have call predecessors, (8), 3 states have return successors, (6), 4 states have call predecessors, (6), 2 states have call successors, (6) [2022-03-17 23:15:55,228 INFO L276 IsEmpty]: Start isEmpty. Operand 827 states and 1097 transitions. [2022-03-17 23:15:55,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-03-17 23:15:55,229 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 23:15:55,229 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 23:15:55,229 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-03-17 23:15:55,229 INFO L403 AbstractCegarLoop]: === Iteration 33 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 23:15:55,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 23:15:55,229 INFO L85 PathProgramCache]: Analyzing trace with hash -1192878684, now seen corresponding path program 1 times [2022-03-17 23:15:55,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 23:15:55,229 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7404158] [2022-03-17 23:15:55,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 23:15:55,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 23:15:55,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:55,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 23:15:55,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:55,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-17 23:15:55,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:55,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-17 23:15:55,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:55,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-17 23:15:55,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:55,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-17 23:15:55,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:55,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-17 23:15:55,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:55,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-03-17 23:15:55,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:55,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 23:15:55,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 23:15:55,375 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7404158] [2022-03-17 23:15:55,375 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [7404158] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 23:15:55,375 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 23:15:55,375 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-17 23:15:55,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877052253] [2022-03-17 23:15:55,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 23:15:55,375 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-17 23:15:55,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 23:15:55,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-17 23:15:55,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2022-03-17 23:15:55,378 INFO L87 Difference]: Start difference. First operand 827 states and 1097 transitions. Second operand has 12 states, 12 states have (on average 3.75) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-03-17 23:15:56,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 23:15:56,442 INFO L93 Difference]: Finished difference Result 1016 states and 1419 transitions. [2022-03-17 23:15:56,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-17 23:15:56,443 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.75) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 61 [2022-03-17 23:15:56,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 23:15:56,445 INFO L225 Difference]: With dead ends: 1016 [2022-03-17 23:15:56,445 INFO L226 Difference]: Without dead ends: 982 [2022-03-17 23:15:56,445 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2022-03-17 23:15:56,446 INFO L912 BasicCegarLoop]: 609 mSDtfsCounter, 938 mSDsluCounter, 1162 mSDsCounter, 0 mSdLazyCounter, 1732 mSolverCounterSat, 427 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 940 SdHoareTripleChecker+Valid, 1771 SdHoareTripleChecker+Invalid, 2159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 427 IncrementalHoareTripleChecker+Valid, 1732 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-03-17 23:15:56,446 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [940 Valid, 1771 Invalid, 2159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [427 Valid, 1732 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-03-17 23:15:56,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 982 states. [2022-03-17 23:15:56,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 982 to 831. [2022-03-17 23:15:56,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 831 states, 653 states have (on average 1.3200612557427258) internal successors, (862), 668 states have internal predecessors, (862), 101 states have call successors, (101), 53 states have call predecessors, (101), 76 states have return successors, (152), 116 states have call predecessors, (152), 95 states have call successors, (152) [2022-03-17 23:15:56,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 831 states to 831 states and 1115 transitions. [2022-03-17 23:15:56,516 INFO L78 Accepts]: Start accepts. Automaton has 831 states and 1115 transitions. Word has length 61 [2022-03-17 23:15:56,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 23:15:56,516 INFO L478 AbstractCegarLoop]: Abstraction has 831 states and 1115 transitions. [2022-03-17 23:15:56,516 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.75) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-03-17 23:15:56,516 INFO L276 IsEmpty]: Start isEmpty. Operand 831 states and 1115 transitions. [2022-03-17 23:15:56,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-03-17 23:15:56,517 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 23:15:56,517 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 23:15:56,518 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-03-17 23:15:56,518 INFO L403 AbstractCegarLoop]: === Iteration 34 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 23:15:56,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 23:15:56,518 INFO L85 PathProgramCache]: Analyzing trace with hash 440130742, now seen corresponding path program 1 times [2022-03-17 23:15:56,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 23:15:56,518 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164619673] [2022-03-17 23:15:56,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 23:15:56,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 23:15:56,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:56,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 23:15:56,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:56,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-17 23:15:56,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:56,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-17 23:15:56,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:56,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-17 23:15:56,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:56,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-17 23:15:56,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:56,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-03-17 23:15:56,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:56,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 23:15:56,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 23:15:56,665 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164619673] [2022-03-17 23:15:56,666 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1164619673] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 23:15:56,666 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 23:15:56,666 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-03-17 23:15:56,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773370496] [2022-03-17 23:15:56,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 23:15:56,666 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-17 23:15:56,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 23:15:56,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-17 23:15:56,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2022-03-17 23:15:56,666 INFO L87 Difference]: Start difference. First operand 831 states and 1115 transitions. Second operand has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (8), 8 states have call predecessors, (8), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2022-03-17 23:15:58,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 23:15:58,322 INFO L93 Difference]: Finished difference Result 1006 states and 1400 transitions. [2022-03-17 23:15:58,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-17 23:15:58,322 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (8), 8 states have call predecessors, (8), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) Word has length 60 [2022-03-17 23:15:58,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 23:15:58,325 INFO L225 Difference]: With dead ends: 1006 [2022-03-17 23:15:58,325 INFO L226 Difference]: Without dead ends: 974 [2022-03-17 23:15:58,325 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2022-03-17 23:15:58,325 INFO L912 BasicCegarLoop]: 607 mSDtfsCounter, 1205 mSDsluCounter, 1131 mSDsCounter, 0 mSdLazyCounter, 2450 mSolverCounterSat, 491 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1207 SdHoareTripleChecker+Valid, 1738 SdHoareTripleChecker+Invalid, 2941 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 491 IncrementalHoareTripleChecker+Valid, 2450 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-03-17 23:15:58,326 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [1207 Valid, 1738 Invalid, 2941 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [491 Valid, 2450 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-03-17 23:15:58,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 974 states. [2022-03-17 23:15:58,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 974 to 831. [2022-03-17 23:15:58,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 831 states, 653 states have (on average 1.318529862174579) internal successors, (861), 668 states have internal predecessors, (861), 101 states have call successors, (101), 53 states have call predecessors, (101), 76 states have return successors, (152), 116 states have call predecessors, (152), 95 states have call successors, (152) [2022-03-17 23:15:58,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 831 states to 831 states and 1114 transitions. [2022-03-17 23:15:58,390 INFO L78 Accepts]: Start accepts. Automaton has 831 states and 1114 transitions. Word has length 60 [2022-03-17 23:15:58,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 23:15:58,390 INFO L478 AbstractCegarLoop]: Abstraction has 831 states and 1114 transitions. [2022-03-17 23:15:58,391 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (8), 8 states have call predecessors, (8), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2022-03-17 23:15:58,391 INFO L276 IsEmpty]: Start isEmpty. Operand 831 states and 1114 transitions. [2022-03-17 23:15:58,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-03-17 23:15:58,392 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 23:15:58,392 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 23:15:58,392 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-03-17 23:15:58,392 INFO L403 AbstractCegarLoop]: === Iteration 35 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 23:15:58,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 23:15:58,392 INFO L85 PathProgramCache]: Analyzing trace with hash 185394197, now seen corresponding path program 1 times [2022-03-17 23:15:58,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 23:15:58,392 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499513507] [2022-03-17 23:15:58,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 23:15:58,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 23:15:58,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:58,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 23:15:58,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:58,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-17 23:15:58,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:58,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-17 23:15:58,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:58,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-17 23:15:58,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:58,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-17 23:15:58,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:58,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-03-17 23:15:58,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:58,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 23:15:58,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 23:15:58,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499513507] [2022-03-17 23:15:58,623 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [499513507] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 23:15:58,624 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 23:15:58,624 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-03-17 23:15:58,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453744343] [2022-03-17 23:15:58,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 23:15:58,624 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-03-17 23:15:58,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 23:15:58,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-03-17 23:15:58,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2022-03-17 23:15:58,624 INFO L87 Difference]: Start difference. First operand 831 states and 1114 transitions. Second operand has 16 states, 16 states have (on average 2.875) internal successors, (46), 8 states have internal predecessors, (46), 3 states have call successors, (8), 8 states have call predecessors, (8), 3 states have return successors, (6), 4 states have call predecessors, (6), 2 states have call successors, (6) [2022-03-17 23:16:00,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 23:16:00,600 INFO L93 Difference]: Finished difference Result 1013 states and 1417 transitions. [2022-03-17 23:16:00,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-03-17 23:16:00,601 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.875) internal successors, (46), 8 states have internal predecessors, (46), 3 states have call successors, (8), 8 states have call predecessors, (8), 3 states have return successors, (6), 4 states have call predecessors, (6), 2 states have call successors, (6) Word has length 60 [2022-03-17 23:16:00,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 23:16:00,603 INFO L225 Difference]: With dead ends: 1013 [2022-03-17 23:16:00,603 INFO L226 Difference]: Without dead ends: 961 [2022-03-17 23:16:00,604 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=92, Invalid=414, Unknown=0, NotChecked=0, Total=506 [2022-03-17 23:16:00,604 INFO L912 BasicCegarLoop]: 608 mSDtfsCounter, 364 mSDsluCounter, 1914 mSDsCounter, 0 mSdLazyCounter, 4475 mSolverCounterSat, 148 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 369 SdHoareTripleChecker+Valid, 2522 SdHoareTripleChecker+Invalid, 4623 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 148 IncrementalHoareTripleChecker+Valid, 4475 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-03-17 23:16:00,604 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [369 Valid, 2522 Invalid, 4623 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [148 Valid, 4475 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-03-17 23:16:00,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 961 states. [2022-03-17 23:16:00,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 961 to 823. [2022-03-17 23:16:00,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 823 states, 647 states have (on average 1.3137557959814528) internal successors, (850), 662 states have internal predecessors, (850), 99 states have call successors, (99), 53 states have call predecessors, (99), 76 states have return successors, (150), 114 states have call predecessors, (150), 93 states have call successors, (150) [2022-03-17 23:16:00,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 823 states to 823 states and 1099 transitions. [2022-03-17 23:16:00,700 INFO L78 Accepts]: Start accepts. Automaton has 823 states and 1099 transitions. Word has length 60 [2022-03-17 23:16:00,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 23:16:00,700 INFO L478 AbstractCegarLoop]: Abstraction has 823 states and 1099 transitions. [2022-03-17 23:16:00,700 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.875) internal successors, (46), 8 states have internal predecessors, (46), 3 states have call successors, (8), 8 states have call predecessors, (8), 3 states have return successors, (6), 4 states have call predecessors, (6), 2 states have call successors, (6) [2022-03-17 23:16:00,701 INFO L276 IsEmpty]: Start isEmpty. Operand 823 states and 1099 transitions. [2022-03-17 23:16:00,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-03-17 23:16:00,702 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 23:16:00,702 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 23:16:00,702 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-03-17 23:16:00,702 INFO L403 AbstractCegarLoop]: === Iteration 36 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 23:16:00,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 23:16:00,702 INFO L85 PathProgramCache]: Analyzing trace with hash 1536662915, now seen corresponding path program 1 times [2022-03-17 23:16:00,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 23:16:00,703 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158736453] [2022-03-17 23:16:00,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 23:16:00,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 23:16:00,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:00,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 23:16:00,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:00,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-17 23:16:00,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:00,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-17 23:16:00,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:00,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-17 23:16:00,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:00,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-17 23:16:00,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:00,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-03-17 23:16:00,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:00,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-17 23:16:00,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:01,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 23:16:01,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 23:16:01,012 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158736453] [2022-03-17 23:16:01,012 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1158736453] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 23:16:01,012 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 23:16:01,012 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-17 23:16:01,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791487503] [2022-03-17 23:16:01,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 23:16:01,013 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-17 23:16:01,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 23:16:01,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-17 23:16:01,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=296, Unknown=0, NotChecked=0, Total=342 [2022-03-17 23:16:01,014 INFO L87 Difference]: Start difference. First operand 823 states and 1099 transitions. Second operand has 19 states, 19 states have (on average 2.789473684210526) internal successors, (53), 9 states have internal predecessors, (53), 2 states have call successors, (9), 8 states have call predecessors, (9), 5 states have return successors, (7), 5 states have call predecessors, (7), 1 states have call successors, (7) [2022-03-17 23:16:03,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 23:16:03,202 INFO L93 Difference]: Finished difference Result 978 states and 1360 transitions. [2022-03-17 23:16:03,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-03-17 23:16:03,203 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.789473684210526) internal successors, (53), 9 states have internal predecessors, (53), 2 states have call successors, (9), 8 states have call predecessors, (9), 5 states have return successors, (7), 5 states have call predecessors, (7), 1 states have call successors, (7) Word has length 69 [2022-03-17 23:16:03,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 23:16:03,207 INFO L225 Difference]: With dead ends: 978 [2022-03-17 23:16:03,207 INFO L226 Difference]: Without dead ends: 948 [2022-03-17 23:16:03,207 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=54, Invalid=366, Unknown=0, NotChecked=0, Total=420 [2022-03-17 23:16:03,208 INFO L912 BasicCegarLoop]: 603 mSDtfsCounter, 1448 mSDsluCounter, 2529 mSDsCounter, 0 mSdLazyCounter, 5235 mSolverCounterSat, 596 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1450 SdHoareTripleChecker+Valid, 3132 SdHoareTripleChecker+Invalid, 5831 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 596 IncrementalHoareTripleChecker+Valid, 5235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-03-17 23:16:03,208 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [1450 Valid, 3132 Invalid, 5831 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [596 Valid, 5235 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-03-17 23:16:03,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 948 states. [2022-03-17 23:16:03,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 948 to 812. [2022-03-17 23:16:03,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 812 states, 639 states have (on average 1.3145539906103287) internal successors, (840), 654 states have internal predecessors, (840), 97 states have call successors, (97), 53 states have call predecessors, (97), 75 states have return successors, (147), 111 states have call predecessors, (147), 91 states have call successors, (147) [2022-03-17 23:16:03,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 812 states to 812 states and 1084 transitions. [2022-03-17 23:16:03,272 INFO L78 Accepts]: Start accepts. Automaton has 812 states and 1084 transitions. Word has length 69 [2022-03-17 23:16:03,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 23:16:03,272 INFO L478 AbstractCegarLoop]: Abstraction has 812 states and 1084 transitions. [2022-03-17 23:16:03,272 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.789473684210526) internal successors, (53), 9 states have internal predecessors, (53), 2 states have call successors, (9), 8 states have call predecessors, (9), 5 states have return successors, (7), 5 states have call predecessors, (7), 1 states have call successors, (7) [2022-03-17 23:16:03,272 INFO L276 IsEmpty]: Start isEmpty. Operand 812 states and 1084 transitions. [2022-03-17 23:16:03,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-03-17 23:16:03,274 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 23:16:03,274 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 23:16:03,274 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-03-17 23:16:03,274 INFO L403 AbstractCegarLoop]: === Iteration 37 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 23:16:03,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 23:16:03,274 INFO L85 PathProgramCache]: Analyzing trace with hash -1158774888, now seen corresponding path program 1 times [2022-03-17 23:16:03,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 23:16:03,274 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145310995] [2022-03-17 23:16:03,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 23:16:03,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 23:16:03,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:03,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 23:16:03,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:03,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-17 23:16:03,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:03,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-17 23:16:03,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:03,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-17 23:16:03,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:03,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-03-17 23:16:03,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:03,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-17 23:16:03,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:03,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-17 23:16:03,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:03,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 23:16:03,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 23:16:03,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145310995] [2022-03-17 23:16:03,476 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [145310995] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 23:16:03,476 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 23:16:03,476 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-17 23:16:03,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603307758] [2022-03-17 23:16:03,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 23:16:03,476 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-17 23:16:03,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 23:16:03,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-17 23:16:03,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=296, Unknown=0, NotChecked=0, Total=342 [2022-03-17 23:16:03,476 INFO L87 Difference]: Start difference. First operand 812 states and 1084 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 9 states have internal predecessors, (47), 2 states have call successors, (9), 8 states have call predecessors, (9), 5 states have return successors, (7), 5 states have call predecessors, (7), 1 states have call successors, (7) [2022-03-17 23:16:05,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 23:16:05,503 INFO L93 Difference]: Finished difference Result 965 states and 1341 transitions. [2022-03-17 23:16:05,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-03-17 23:16:05,503 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 9 states have internal predecessors, (47), 2 states have call successors, (9), 8 states have call predecessors, (9), 5 states have return successors, (7), 5 states have call predecessors, (7), 1 states have call successors, (7) Word has length 63 [2022-03-17 23:16:05,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 23:16:05,506 INFO L225 Difference]: With dead ends: 965 [2022-03-17 23:16:05,506 INFO L226 Difference]: Without dead ends: 943 [2022-03-17 23:16:05,506 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=61, Invalid=401, Unknown=0, NotChecked=0, Total=462 [2022-03-17 23:16:05,507 INFO L912 BasicCegarLoop]: 588 mSDtfsCounter, 577 mSDsluCounter, 2653 mSDsCounter, 0 mSdLazyCounter, 6080 mSolverCounterSat, 235 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 579 SdHoareTripleChecker+Valid, 3241 SdHoareTripleChecker+Invalid, 6315 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 235 IncrementalHoareTripleChecker+Valid, 6080 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-03-17 23:16:05,507 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [579 Valid, 3241 Invalid, 6315 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [235 Valid, 6080 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-03-17 23:16:05,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 943 states. [2022-03-17 23:16:05,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 943 to 807. [2022-03-17 23:16:05,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 807 states, 636 states have (on average 1.3144654088050314) internal successors, (836), 651 states have internal predecessors, (836), 96 states have call successors, (96), 53 states have call predecessors, (96), 74 states have return successors, (145), 109 states have call predecessors, (145), 90 states have call successors, (145) [2022-03-17 23:16:05,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 807 states to 807 states and 1077 transitions. [2022-03-17 23:16:05,606 INFO L78 Accepts]: Start accepts. Automaton has 807 states and 1077 transitions. Word has length 63 [2022-03-17 23:16:05,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 23:16:05,607 INFO L478 AbstractCegarLoop]: Abstraction has 807 states and 1077 transitions. [2022-03-17 23:16:05,607 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 9 states have internal predecessors, (47), 2 states have call successors, (9), 8 states have call predecessors, (9), 5 states have return successors, (7), 5 states have call predecessors, (7), 1 states have call successors, (7) [2022-03-17 23:16:05,607 INFO L276 IsEmpty]: Start isEmpty. Operand 807 states and 1077 transitions. [2022-03-17 23:16:05,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-03-17 23:16:05,608 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 23:16:05,608 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 23:16:05,608 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-03-17 23:16:05,608 INFO L403 AbstractCegarLoop]: === Iteration 38 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 23:16:05,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 23:16:05,608 INFO L85 PathProgramCache]: Analyzing trace with hash 1342281155, now seen corresponding path program 1 times [2022-03-17 23:16:05,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 23:16:05,609 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337096012] [2022-03-17 23:16:05,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 23:16:05,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 23:16:05,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:05,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 23:16:05,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:05,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-17 23:16:05,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:05,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-17 23:16:05,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:05,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-17 23:16:05,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:05,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-17 23:16:05,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:05,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-17 23:16:05,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:05,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-17 23:16:05,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:05,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 23:16:05,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 23:16:05,801 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337096012] [2022-03-17 23:16:05,801 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1337096012] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 23:16:05,801 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 23:16:05,801 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-17 23:16:05,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983961831] [2022-03-17 23:16:05,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 23:16:05,801 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-17 23:16:05,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 23:16:05,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-17 23:16:05,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=296, Unknown=0, NotChecked=0, Total=342 [2022-03-17 23:16:05,802 INFO L87 Difference]: Start difference. First operand 807 states and 1077 transitions. Second operand has 19 states, 19 states have (on average 2.4210526315789473) internal successors, (46), 9 states have internal predecessors, (46), 2 states have call successors, (9), 8 states have call predecessors, (9), 5 states have return successors, (7), 5 states have call predecessors, (7), 1 states have call successors, (7) [2022-03-17 23:16:07,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 23:16:07,766 INFO L93 Difference]: Finished difference Result 960 states and 1334 transitions. [2022-03-17 23:16:07,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-03-17 23:16:07,766 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.4210526315789473) internal successors, (46), 9 states have internal predecessors, (46), 2 states have call successors, (9), 8 states have call predecessors, (9), 5 states have return successors, (7), 5 states have call predecessors, (7), 1 states have call successors, (7) Word has length 62 [2022-03-17 23:16:07,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 23:16:07,769 INFO L225 Difference]: With dead ends: 960 [2022-03-17 23:16:07,769 INFO L226 Difference]: Without dead ends: 938 [2022-03-17 23:16:07,783 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=54, Invalid=366, Unknown=0, NotChecked=0, Total=420 [2022-03-17 23:16:07,784 INFO L912 BasicCegarLoop]: 581 mSDtfsCounter, 854 mSDsluCounter, 2458 mSDsCounter, 0 mSdLazyCounter, 5060 mSolverCounterSat, 347 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 856 SdHoareTripleChecker+Valid, 3039 SdHoareTripleChecker+Invalid, 5407 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 347 IncrementalHoareTripleChecker+Valid, 5060 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-03-17 23:16:07,784 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [856 Valid, 3039 Invalid, 5407 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [347 Valid, 5060 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-03-17 23:16:07,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 938 states. [2022-03-17 23:16:07,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 938 to 802. [2022-03-17 23:16:07,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 802 states, 633 states have (on average 1.3143759873617693) internal successors, (832), 648 states have internal predecessors, (832), 95 states have call successors, (95), 53 states have call predecessors, (95), 73 states have return successors, (143), 107 states have call predecessors, (143), 89 states have call successors, (143) [2022-03-17 23:16:07,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 802 states to 802 states and 1070 transitions. [2022-03-17 23:16:07,881 INFO L78 Accepts]: Start accepts. Automaton has 802 states and 1070 transitions. Word has length 62 [2022-03-17 23:16:07,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 23:16:07,881 INFO L478 AbstractCegarLoop]: Abstraction has 802 states and 1070 transitions. [2022-03-17 23:16:07,881 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.4210526315789473) internal successors, (46), 9 states have internal predecessors, (46), 2 states have call successors, (9), 8 states have call predecessors, (9), 5 states have return successors, (7), 5 states have call predecessors, (7), 1 states have call successors, (7) [2022-03-17 23:16:07,881 INFO L276 IsEmpty]: Start isEmpty. Operand 802 states and 1070 transitions. [2022-03-17 23:16:07,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-03-17 23:16:07,882 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 23:16:07,882 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 23:16:07,883 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-03-17 23:16:07,883 INFO L403 AbstractCegarLoop]: === Iteration 39 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 23:16:07,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 23:16:07,883 INFO L85 PathProgramCache]: Analyzing trace with hash 739520085, now seen corresponding path program 1 times [2022-03-17 23:16:07,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 23:16:07,883 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391131159] [2022-03-17 23:16:07,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 23:16:07,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 23:16:07,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:07,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 23:16:07,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:08,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-17 23:16:08,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:08,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-17 23:16:08,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:08,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-17 23:16:08,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:08,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-17 23:16:08,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:08,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-03-17 23:16:08,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:08,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-17 23:16:08,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:08,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 23:16:08,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 23:16:08,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391131159] [2022-03-17 23:16:08,191 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1391131159] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 23:16:08,191 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 23:16:08,191 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-17 23:16:08,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107279607] [2022-03-17 23:16:08,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 23:16:08,191 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-17 23:16:08,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 23:16:08,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-17 23:16:08,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=327, Unknown=0, NotChecked=0, Total=380 [2022-03-17 23:16:08,192 INFO L87 Difference]: Start difference. First operand 802 states and 1070 transitions. Second operand has 20 states, 19 states have (on average 2.473684210526316) internal successors, (47), 10 states have internal predecessors, (47), 4 states have call successors, (9), 9 states have call predecessors, (9), 4 states have return successors, (7), 5 states have call predecessors, (7), 3 states have call successors, (7) [2022-03-17 23:16:10,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 23:16:10,917 INFO L93 Difference]: Finished difference Result 960 states and 1332 transitions. [2022-03-17 23:16:10,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-03-17 23:16:10,917 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 2.473684210526316) internal successors, (47), 10 states have internal predecessors, (47), 4 states have call successors, (9), 9 states have call predecessors, (9), 4 states have return successors, (7), 5 states have call predecessors, (7), 3 states have call successors, (7) Word has length 63 [2022-03-17 23:16:10,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 23:16:10,920 INFO L225 Difference]: With dead ends: 960 [2022-03-17 23:16:10,920 INFO L226 Difference]: Without dead ends: 936 [2022-03-17 23:16:10,920 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=99, Invalid=603, Unknown=0, NotChecked=0, Total=702 [2022-03-17 23:16:10,921 INFO L912 BasicCegarLoop]: 551 mSDtfsCounter, 592 mSDsluCounter, 2535 mSDsCounter, 0 mSdLazyCounter, 5922 mSolverCounterSat, 243 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 595 SdHoareTripleChecker+Valid, 3086 SdHoareTripleChecker+Invalid, 6165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 243 IncrementalHoareTripleChecker+Valid, 5922 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-03-17 23:16:10,921 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [595 Valid, 3086 Invalid, 6165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [243 Valid, 5922 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-03-17 23:16:10,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 936 states. [2022-03-17 23:16:10,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 936 to 800. [2022-03-17 23:16:10,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 800 states, 632 states have (on average 1.3132911392405062) internal successors, (830), 647 states have internal predecessors, (830), 94 states have call successors, (94), 53 states have call predecessors, (94), 73 states have return successors, (142), 106 states have call predecessors, (142), 88 states have call successors, (142) [2022-03-17 23:16:10,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 800 states to 800 states and 1066 transitions. [2022-03-17 23:16:10,985 INFO L78 Accepts]: Start accepts. Automaton has 800 states and 1066 transitions. Word has length 63 [2022-03-17 23:16:10,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 23:16:10,985 INFO L478 AbstractCegarLoop]: Abstraction has 800 states and 1066 transitions. [2022-03-17 23:16:10,985 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 2.473684210526316) internal successors, (47), 10 states have internal predecessors, (47), 4 states have call successors, (9), 9 states have call predecessors, (9), 4 states have return successors, (7), 5 states have call predecessors, (7), 3 states have call successors, (7) [2022-03-17 23:16:10,985 INFO L276 IsEmpty]: Start isEmpty. Operand 800 states and 1066 transitions. [2022-03-17 23:16:11,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-03-17 23:16:11,003 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 23:16:11,004 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 23:16:11,004 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-03-17 23:16:11,004 INFO L403 AbstractCegarLoop]: === Iteration 40 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 23:16:11,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 23:16:11,004 INFO L85 PathProgramCache]: Analyzing trace with hash -620638821, now seen corresponding path program 1 times [2022-03-17 23:16:11,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 23:16:11,005 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461017112] [2022-03-17 23:16:11,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 23:16:11,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 23:16:11,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:11,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 23:16:11,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:11,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-17 23:16:11,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:11,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-17 23:16:11,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:11,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-17 23:16:11,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:11,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-17 23:16:11,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:11,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-17 23:16:11,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:11,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-17 23:16:11,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:11,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 23:16:11,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 23:16:11,136 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461017112] [2022-03-17 23:16:11,136 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1461017112] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 23:16:11,136 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 23:16:11,136 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-03-17 23:16:11,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894539076] [2022-03-17 23:16:11,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 23:16:11,136 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-17 23:16:11,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 23:16:11,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-17 23:16:11,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-03-17 23:16:11,137 INFO L87 Difference]: Start difference. First operand 800 states and 1066 transitions. Second operand has 10 states, 10 states have (on average 4.7) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (9), 9 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-03-17 23:16:12,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 23:16:12,027 INFO L93 Difference]: Finished difference Result 1150 states and 1562 transitions. [2022-03-17 23:16:12,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-17 23:16:12,028 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.7) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (9), 9 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 63 [2022-03-17 23:16:12,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 23:16:12,030 INFO L225 Difference]: With dead ends: 1150 [2022-03-17 23:16:12,030 INFO L226 Difference]: Without dead ends: 797 [2022-03-17 23:16:12,031 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=66, Unknown=0, NotChecked=0, Total=110 [2022-03-17 23:16:12,031 INFO L912 BasicCegarLoop]: 511 mSDtfsCounter, 1131 mSDsluCounter, 579 mSDsCounter, 0 mSdLazyCounter, 902 mSolverCounterSat, 425 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1133 SdHoareTripleChecker+Valid, 1090 SdHoareTripleChecker+Invalid, 1327 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 425 IncrementalHoareTripleChecker+Valid, 902 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-17 23:16:12,031 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [1133 Valid, 1090 Invalid, 1327 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [425 Valid, 902 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-17 23:16:12,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 797 states. [2022-03-17 23:16:12,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 797 to 692. [2022-03-17 23:16:12,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 692 states, 547 states have (on average 1.3053016453382085) internal successors, (714), 561 states have internal predecessors, (714), 82 states have call successors, (82), 47 states have call predecessors, (82), 62 states have return successors, (101), 90 states have call predecessors, (101), 76 states have call successors, (101) [2022-03-17 23:16:12,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 692 states to 692 states and 897 transitions. [2022-03-17 23:16:12,088 INFO L78 Accepts]: Start accepts. Automaton has 692 states and 897 transitions. Word has length 63 [2022-03-17 23:16:12,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 23:16:12,089 INFO L478 AbstractCegarLoop]: Abstraction has 692 states and 897 transitions. [2022-03-17 23:16:12,089 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.7) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (9), 9 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-03-17 23:16:12,089 INFO L276 IsEmpty]: Start isEmpty. Operand 692 states and 897 transitions. [2022-03-17 23:16:12,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-03-17 23:16:12,090 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 23:16:12,090 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 23:16:12,090 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-03-17 23:16:12,090 INFO L403 AbstractCegarLoop]: === Iteration 41 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 23:16:12,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 23:16:12,090 INFO L85 PathProgramCache]: Analyzing trace with hash -306718972, now seen corresponding path program 1 times [2022-03-17 23:16:12,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 23:16:12,090 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134666580] [2022-03-17 23:16:12,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 23:16:12,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 23:16:12,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:12,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 23:16:12,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:12,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-17 23:16:12,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:12,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-17 23:16:12,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:12,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-03-17 23:16:12,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:12,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-17 23:16:12,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:12,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-17 23:16:12,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:12,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-17 23:16:12,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:12,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-17 23:16:12,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:12,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 23:16:12,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 23:16:12,216 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1134666580] [2022-03-17 23:16:12,216 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1134666580] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 23:16:12,216 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 23:16:12,216 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-03-17 23:16:12,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814918963] [2022-03-17 23:16:12,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 23:16:12,217 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-17 23:16:12,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 23:16:12,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-17 23:16:12,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-03-17 23:16:12,218 INFO L87 Difference]: Start difference. First operand 692 states and 897 transitions. Second operand has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (12), 8 states have call predecessors, (12), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2022-03-17 23:16:13,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 23:16:13,204 INFO L93 Difference]: Finished difference Result 882 states and 1167 transitions. [2022-03-17 23:16:13,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-17 23:16:13,204 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (12), 8 states have call predecessors, (12), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) Word has length 66 [2022-03-17 23:16:13,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 23:16:13,206 INFO L225 Difference]: With dead ends: 882 [2022-03-17 23:16:13,206 INFO L226 Difference]: Without dead ends: 762 [2022-03-17 23:16:13,206 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2022-03-17 23:16:13,207 INFO L912 BasicCegarLoop]: 475 mSDtfsCounter, 667 mSDsluCounter, 444 mSDsCounter, 0 mSdLazyCounter, 907 mSolverCounterSat, 243 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 678 SdHoareTripleChecker+Valid, 919 SdHoareTripleChecker+Invalid, 1150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 243 IncrementalHoareTripleChecker+Valid, 907 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-03-17 23:16:13,207 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [678 Valid, 919 Invalid, 1150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [243 Valid, 907 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-03-17 23:16:13,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 762 states. [2022-03-17 23:16:13,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 762 to 692. [2022-03-17 23:16:13,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 692 states, 547 states have (on average 1.3016453382084094) internal successors, (712), 561 states have internal predecessors, (712), 82 states have call successors, (82), 47 states have call predecessors, (82), 62 states have return successors, (101), 90 states have call predecessors, (101), 76 states have call successors, (101) [2022-03-17 23:16:13,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 692 states to 692 states and 895 transitions. [2022-03-17 23:16:13,265 INFO L78 Accepts]: Start accepts. Automaton has 692 states and 895 transitions. Word has length 66 [2022-03-17 23:16:13,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 23:16:13,265 INFO L478 AbstractCegarLoop]: Abstraction has 692 states and 895 transitions. [2022-03-17 23:16:13,265 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (12), 8 states have call predecessors, (12), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2022-03-17 23:16:13,265 INFO L276 IsEmpty]: Start isEmpty. Operand 692 states and 895 transitions. [2022-03-17 23:16:13,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-03-17 23:16:13,266 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 23:16:13,266 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 23:16:13,266 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2022-03-17 23:16:13,266 INFO L403 AbstractCegarLoop]: === Iteration 42 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 23:16:13,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 23:16:13,267 INFO L85 PathProgramCache]: Analyzing trace with hash 526937182, now seen corresponding path program 1 times [2022-03-17 23:16:13,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 23:16:13,267 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112550581] [2022-03-17 23:16:13,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 23:16:13,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 23:16:13,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:13,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 23:16:13,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:13,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-17 23:16:13,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:13,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-17 23:16:13,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:13,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-17 23:16:13,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:13,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-17 23:16:13,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:13,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-17 23:16:13,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:13,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-17 23:16:13,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:13,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-17 23:16:13,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:13,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 23:16:13,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 23:16:13,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112550581] [2022-03-17 23:16:13,535 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2112550581] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 23:16:13,535 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 23:16:13,535 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-17 23:16:13,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138611643] [2022-03-17 23:16:13,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 23:16:13,536 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-17 23:16:13,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 23:16:13,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-17 23:16:13,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=359, Unknown=0, NotChecked=0, Total=420 [2022-03-17 23:16:13,536 INFO L87 Difference]: Start difference. First operand 692 states and 895 transitions. Second operand has 21 states, 20 states have (on average 2.45) internal successors, (49), 10 states have internal predecessors, (49), 4 states have call successors, (10), 10 states have call predecessors, (10), 4 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) [2022-03-17 23:16:15,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 23:16:15,746 INFO L93 Difference]: Finished difference Result 786 states and 1032 transitions. [2022-03-17 23:16:15,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-03-17 23:16:15,747 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 2.45) internal successors, (49), 10 states have internal predecessors, (49), 4 states have call successors, (10), 10 states have call predecessors, (10), 4 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) Word has length 67 [2022-03-17 23:16:15,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 23:16:15,749 INFO L225 Difference]: With dead ends: 786 [2022-03-17 23:16:15,749 INFO L226 Difference]: Without dead ends: 761 [2022-03-17 23:16:15,749 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=120, Invalid=692, Unknown=0, NotChecked=0, Total=812 [2022-03-17 23:16:15,749 INFO L912 BasicCegarLoop]: 507 mSDtfsCounter, 886 mSDsluCounter, 2240 mSDsCounter, 0 mSdLazyCounter, 5122 mSolverCounterSat, 332 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 890 SdHoareTripleChecker+Valid, 2747 SdHoareTripleChecker+Invalid, 5454 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 332 IncrementalHoareTripleChecker+Valid, 5122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-03-17 23:16:15,750 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [890 Valid, 2747 Invalid, 5454 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [332 Valid, 5122 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-03-17 23:16:15,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 761 states. [2022-03-17 23:16:15,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 761 to 690. [2022-03-17 23:16:15,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 690 states, 546 states have (on average 1.3003663003663004) internal successors, (710), 560 states have internal predecessors, (710), 81 states have call successors, (81), 47 states have call predecessors, (81), 62 states have return successors, (100), 89 states have call predecessors, (100), 75 states have call successors, (100) [2022-03-17 23:16:15,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 690 states to 690 states and 891 transitions. [2022-03-17 23:16:15,806 INFO L78 Accepts]: Start accepts. Automaton has 690 states and 891 transitions. Word has length 67 [2022-03-17 23:16:15,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 23:16:15,806 INFO L478 AbstractCegarLoop]: Abstraction has 690 states and 891 transitions. [2022-03-17 23:16:15,806 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 2.45) internal successors, (49), 10 states have internal predecessors, (49), 4 states have call successors, (10), 10 states have call predecessors, (10), 4 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) [2022-03-17 23:16:15,806 INFO L276 IsEmpty]: Start isEmpty. Operand 690 states and 891 transitions. [2022-03-17 23:16:15,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-03-17 23:16:15,807 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 23:16:15,807 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 23:16:15,808 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2022-03-17 23:16:15,808 INFO L403 AbstractCegarLoop]: === Iteration 43 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 23:16:15,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 23:16:15,808 INFO L85 PathProgramCache]: Analyzing trace with hash 459314479, now seen corresponding path program 1 times [2022-03-17 23:16:15,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 23:16:15,808 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505251947] [2022-03-17 23:16:15,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 23:16:15,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 23:16:15,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:15,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 23:16:15,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:15,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-17 23:16:15,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:15,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-17 23:16:15,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:15,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-17 23:16:15,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:15,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-17 23:16:15,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:15,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-17 23:16:15,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:15,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-03-17 23:16:15,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:16,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-17 23:16:16,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:16,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 23:16:16,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 23:16:16,049 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505251947] [2022-03-17 23:16:16,049 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1505251947] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 23:16:16,049 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 23:16:16,049 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-17 23:16:16,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061875629] [2022-03-17 23:16:16,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 23:16:16,050 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-17 23:16:16,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 23:16:16,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-17 23:16:16,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=359, Unknown=0, NotChecked=0, Total=420 [2022-03-17 23:16:16,051 INFO L87 Difference]: Start difference. First operand 690 states and 891 transitions. Second operand has 21 states, 20 states have (on average 2.4) internal successors, (48), 10 states have internal predecessors, (48), 4 states have call successors, (10), 10 states have call predecessors, (10), 4 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) [2022-03-17 23:16:18,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 23:16:18,240 INFO L93 Difference]: Finished difference Result 781 states and 1023 transitions. [2022-03-17 23:16:18,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-03-17 23:16:18,241 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 2.4) internal successors, (48), 10 states have internal predecessors, (48), 4 states have call successors, (10), 10 states have call predecessors, (10), 4 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) Word has length 66 [2022-03-17 23:16:18,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 23:16:18,242 INFO L225 Difference]: With dead ends: 781 [2022-03-17 23:16:18,242 INFO L226 Difference]: Without dead ends: 756 [2022-03-17 23:16:18,243 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=120, Invalid=692, Unknown=0, NotChecked=0, Total=812 [2022-03-17 23:16:18,248 INFO L912 BasicCegarLoop]: 485 mSDtfsCounter, 1391 mSDsluCounter, 1978 mSDsCounter, 0 mSdLazyCounter, 5010 mSolverCounterSat, 523 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1394 SdHoareTripleChecker+Valid, 2463 SdHoareTripleChecker+Invalid, 5533 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 523 IncrementalHoareTripleChecker+Valid, 5010 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-03-17 23:16:18,248 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [1394 Valid, 2463 Invalid, 5533 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [523 Valid, 5010 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-03-17 23:16:18,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 756 states. [2022-03-17 23:16:18,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 756 to 688. [2022-03-17 23:16:18,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 688 states, 545 states have (on average 1.2990825688073395) internal successors, (708), 559 states have internal predecessors, (708), 80 states have call successors, (80), 47 states have call predecessors, (80), 62 states have return successors, (99), 88 states have call predecessors, (99), 74 states have call successors, (99) [2022-03-17 23:16:18,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 688 states to 688 states and 887 transitions. [2022-03-17 23:16:18,310 INFO L78 Accepts]: Start accepts. Automaton has 688 states and 887 transitions. Word has length 66 [2022-03-17 23:16:18,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 23:16:18,311 INFO L478 AbstractCegarLoop]: Abstraction has 688 states and 887 transitions. [2022-03-17 23:16:18,311 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 2.4) internal successors, (48), 10 states have internal predecessors, (48), 4 states have call successors, (10), 10 states have call predecessors, (10), 4 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) [2022-03-17 23:16:18,311 INFO L276 IsEmpty]: Start isEmpty. Operand 688 states and 887 transitions. [2022-03-17 23:16:18,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-03-17 23:16:18,312 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 23:16:18,312 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 23:16:18,312 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2022-03-17 23:16:18,314 INFO L403 AbstractCegarLoop]: === Iteration 44 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 23:16:18,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 23:16:18,315 INFO L85 PathProgramCache]: Analyzing trace with hash 1659747958, now seen corresponding path program 1 times [2022-03-17 23:16:18,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 23:16:18,315 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363940279] [2022-03-17 23:16:18,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 23:16:18,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 23:16:18,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:18,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 23:16:18,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:18,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-17 23:16:18,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:18,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-17 23:16:18,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:18,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-17 23:16:18,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:18,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-17 23:16:18,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:18,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-17 23:16:18,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:18,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-17 23:16:18,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:18,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 23:16:18,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 23:16:18,546 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363940279] [2022-03-17 23:16:18,546 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1363940279] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 23:16:18,546 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 23:16:18,546 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-17 23:16:18,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363775741] [2022-03-17 23:16:18,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 23:16:18,547 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-17 23:16:18,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 23:16:18,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-17 23:16:18,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2022-03-17 23:16:18,547 INFO L87 Difference]: Start difference. First operand 688 states and 887 transitions. Second operand has 12 states, 12 states have (on average 4.083333333333333) internal successors, (49), 5 states have internal predecessors, (49), 3 states have call successors, (9), 9 states have call predecessors, (9), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-03-17 23:16:20,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 23:16:20,065 INFO L93 Difference]: Finished difference Result 820 states and 1069 transitions. [2022-03-17 23:16:20,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-03-17 23:16:20,065 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.083333333333333) internal successors, (49), 5 states have internal predecessors, (49), 3 states have call successors, (9), 9 states have call predecessors, (9), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 65 [2022-03-17 23:16:20,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 23:16:20,067 INFO L225 Difference]: With dead ends: 820 [2022-03-17 23:16:20,067 INFO L226 Difference]: Without dead ends: 787 [2022-03-17 23:16:20,067 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=138, Invalid=282, Unknown=0, NotChecked=0, Total=420 [2022-03-17 23:16:20,068 INFO L912 BasicCegarLoop]: 486 mSDtfsCounter, 738 mSDsluCounter, 683 mSDsCounter, 0 mSdLazyCounter, 1579 mSolverCounterSat, 246 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 741 SdHoareTripleChecker+Valid, 1169 SdHoareTripleChecker+Invalid, 1825 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 246 IncrementalHoareTripleChecker+Valid, 1579 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-03-17 23:16:20,068 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [741 Valid, 1169 Invalid, 1825 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [246 Valid, 1579 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-03-17 23:16:20,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 787 states. [2022-03-17 23:16:20,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 787 to 694. [2022-03-17 23:16:20,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 694 states, 550 states have (on average 1.298181818181818) internal successors, (714), 564 states have internal predecessors, (714), 81 states have call successors, (81), 47 states have call predecessors, (81), 62 states have return successors, (100), 89 states have call predecessors, (100), 75 states have call successors, (100) [2022-03-17 23:16:20,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 694 states to 694 states and 895 transitions. [2022-03-17 23:16:20,176 INFO L78 Accepts]: Start accepts. Automaton has 694 states and 895 transitions. Word has length 65 [2022-03-17 23:16:20,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 23:16:20,176 INFO L478 AbstractCegarLoop]: Abstraction has 694 states and 895 transitions. [2022-03-17 23:16:20,176 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.083333333333333) internal successors, (49), 5 states have internal predecessors, (49), 3 states have call successors, (9), 9 states have call predecessors, (9), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-03-17 23:16:20,176 INFO L276 IsEmpty]: Start isEmpty. Operand 694 states and 895 transitions. [2022-03-17 23:16:20,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-03-17 23:16:20,177 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 23:16:20,177 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 23:16:20,178 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2022-03-17 23:16:20,178 INFO L403 AbstractCegarLoop]: === Iteration 45 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 23:16:20,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 23:16:20,178 INFO L85 PathProgramCache]: Analyzing trace with hash -697612646, now seen corresponding path program 1 times [2022-03-17 23:16:20,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 23:16:20,178 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903383713] [2022-03-17 23:16:20,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 23:16:20,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 23:16:20,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:20,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 23:16:20,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:20,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-17 23:16:20,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:20,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-17 23:16:20,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:20,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-17 23:16:20,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:20,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-17 23:16:20,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:20,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-03-17 23:16:20,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:20,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-03-17 23:16:20,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:20,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 23:16:20,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 23:16:20,315 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903383713] [2022-03-17 23:16:20,315 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [903383713] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 23:16:20,315 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 23:16:20,315 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-17 23:16:20,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141053074] [2022-03-17 23:16:20,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 23:16:20,315 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-17 23:16:20,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 23:16:20,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-17 23:16:20,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2022-03-17 23:16:20,316 INFO L87 Difference]: Start difference. First operand 694 states and 895 transitions. Second operand has 12 states, 12 states have (on average 4.166666666666667) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-03-17 23:16:21,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 23:16:21,532 INFO L93 Difference]: Finished difference Result 818 states and 1062 transitions. [2022-03-17 23:16:21,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-17 23:16:21,533 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.166666666666667) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 66 [2022-03-17 23:16:21,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 23:16:21,538 INFO L225 Difference]: With dead ends: 818 [2022-03-17 23:16:21,538 INFO L226 Difference]: Without dead ends: 764 [2022-03-17 23:16:21,538 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=76, Invalid=164, Unknown=0, NotChecked=0, Total=240 [2022-03-17 23:16:21,538 INFO L912 BasicCegarLoop]: 492 mSDtfsCounter, 1382 mSDsluCounter, 774 mSDsCounter, 0 mSdLazyCounter, 1506 mSolverCounterSat, 510 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1384 SdHoareTripleChecker+Valid, 1266 SdHoareTripleChecker+Invalid, 2016 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 510 IncrementalHoareTripleChecker+Valid, 1506 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-03-17 23:16:21,538 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [1384 Valid, 1266 Invalid, 2016 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [510 Valid, 1506 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-03-17 23:16:21,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 764 states. [2022-03-17 23:16:21,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 764 to 694. [2022-03-17 23:16:21,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 694 states, 550 states have (on average 1.2945454545454544) internal successors, (712), 564 states have internal predecessors, (712), 81 states have call successors, (81), 47 states have call predecessors, (81), 62 states have return successors, (100), 89 states have call predecessors, (100), 75 states have call successors, (100) [2022-03-17 23:16:21,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 694 states to 694 states and 893 transitions. [2022-03-17 23:16:21,596 INFO L78 Accepts]: Start accepts. Automaton has 694 states and 893 transitions. Word has length 66 [2022-03-17 23:16:21,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 23:16:21,597 INFO L478 AbstractCegarLoop]: Abstraction has 694 states and 893 transitions. [2022-03-17 23:16:21,597 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.166666666666667) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-03-17 23:16:21,597 INFO L276 IsEmpty]: Start isEmpty. Operand 694 states and 893 transitions. [2022-03-17 23:16:21,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-03-17 23:16:21,598 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 23:16:21,598 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 23:16:21,598 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2022-03-17 23:16:21,598 INFO L403 AbstractCegarLoop]: === Iteration 46 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 23:16:21,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 23:16:21,599 INFO L85 PathProgramCache]: Analyzing trace with hash -346812709, now seen corresponding path program 1 times [2022-03-17 23:16:21,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 23:16:21,599 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257035792] [2022-03-17 23:16:21,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 23:16:21,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 23:16:21,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:21,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 23:16:21,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:21,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-17 23:16:21,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:21,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-17 23:16:21,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:21,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-17 23:16:21,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:21,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-17 23:16:21,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:21,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-03-17 23:16:21,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:21,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-03-17 23:16:21,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:21,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 23:16:21,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 23:16:21,818 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257035792] [2022-03-17 23:16:21,818 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [257035792] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 23:16:21,818 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 23:16:21,819 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-03-17 23:16:21,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45468528] [2022-03-17 23:16:21,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 23:16:21,819 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-03-17 23:16:21,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 23:16:21,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-03-17 23:16:21,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2022-03-17 23:16:21,819 INFO L87 Difference]: Start difference. First operand 694 states and 893 transitions. Second operand has 16 states, 16 states have (on average 3.125) internal successors, (50), 7 states have internal predecessors, (50), 3 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 4 states have call predecessors, (7), 2 states have call successors, (7) [2022-03-17 23:16:23,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 23:16:23,365 INFO L93 Difference]: Finished difference Result 789 states and 1029 transitions. [2022-03-17 23:16:23,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-03-17 23:16:23,366 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.125) internal successors, (50), 7 states have internal predecessors, (50), 3 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 4 states have call predecessors, (7), 2 states have call successors, (7) Word has length 66 [2022-03-17 23:16:23,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 23:16:23,368 INFO L225 Difference]: With dead ends: 789 [2022-03-17 23:16:23,368 INFO L226 Difference]: Without dead ends: 712 [2022-03-17 23:16:23,368 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2022-03-17 23:16:23,369 INFO L912 BasicCegarLoop]: 499 mSDtfsCounter, 1151 mSDsluCounter, 1580 mSDsCounter, 0 mSdLazyCounter, 3590 mSolverCounterSat, 434 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1156 SdHoareTripleChecker+Valid, 2079 SdHoareTripleChecker+Invalid, 4024 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 434 IncrementalHoareTripleChecker+Valid, 3590 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-03-17 23:16:23,369 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [1156 Valid, 2079 Invalid, 4024 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [434 Valid, 3590 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-03-17 23:16:23,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 712 states. [2022-03-17 23:16:23,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 712 to 657. [2022-03-17 23:16:23,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 657 states, 520 states have (on average 1.2807692307692307) internal successors, (666), 534 states have internal predecessors, (666), 74 states have call successors, (74), 47 states have call predecessors, (74), 62 states have return successors, (92), 82 states have call predecessors, (92), 68 states have call successors, (92) [2022-03-17 23:16:23,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 657 states to 657 states and 832 transitions. [2022-03-17 23:16:23,422 INFO L78 Accepts]: Start accepts. Automaton has 657 states and 832 transitions. Word has length 66 [2022-03-17 23:16:23,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 23:16:23,422 INFO L478 AbstractCegarLoop]: Abstraction has 657 states and 832 transitions. [2022-03-17 23:16:23,422 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.125) internal successors, (50), 7 states have internal predecessors, (50), 3 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 4 states have call predecessors, (7), 2 states have call successors, (7) [2022-03-17 23:16:23,422 INFO L276 IsEmpty]: Start isEmpty. Operand 657 states and 832 transitions. [2022-03-17 23:16:23,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-03-17 23:16:23,423 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 23:16:23,423 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 23:16:23,423 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2022-03-17 23:16:23,423 INFO L403 AbstractCegarLoop]: === Iteration 47 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 23:16:23,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 23:16:23,424 INFO L85 PathProgramCache]: Analyzing trace with hash 255041077, now seen corresponding path program 1 times [2022-03-17 23:16:23,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 23:16:23,424 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503091692] [2022-03-17 23:16:23,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 23:16:23,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 23:16:23,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:23,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 23:16:23,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:23,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-17 23:16:23,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:23,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-17 23:16:23,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:23,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-17 23:16:23,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:23,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-03-17 23:16:23,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:23,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-03-17 23:16:23,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:23,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-17 23:16:23,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:23,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 23:16:23,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 23:16:23,551 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503091692] [2022-03-17 23:16:23,551 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [503091692] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 23:16:23,551 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 23:16:23,551 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-03-17 23:16:23,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522969172] [2022-03-17 23:16:23,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 23:16:23,551 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-17 23:16:23,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 23:16:23,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-17 23:16:23,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-03-17 23:16:23,551 INFO L87 Difference]: Start difference. First operand 657 states and 832 transitions. Second operand has 10 states, 10 states have (on average 5.1) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (9), 9 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2022-03-17 23:16:24,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 23:16:24,564 INFO L93 Difference]: Finished difference Result 841 states and 1078 transitions. [2022-03-17 23:16:24,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-17 23:16:24,565 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.1) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (9), 9 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) Word has length 67 [2022-03-17 23:16:24,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 23:16:24,566 INFO L225 Difference]: With dead ends: 841 [2022-03-17 23:16:24,567 INFO L226 Difference]: Without dead ends: 829 [2022-03-17 23:16:24,567 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 10 SyntacticMatches, 3 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=98, Unknown=0, NotChecked=0, Total=156 [2022-03-17 23:16:24,567 INFO L912 BasicCegarLoop]: 464 mSDtfsCounter, 479 mSDsluCounter, 445 mSDsCounter, 0 mSdLazyCounter, 1387 mSolverCounterSat, 161 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 493 SdHoareTripleChecker+Valid, 909 SdHoareTripleChecker+Invalid, 1548 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 161 IncrementalHoareTripleChecker+Valid, 1387 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-03-17 23:16:24,567 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [493 Valid, 909 Invalid, 1548 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [161 Valid, 1387 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-03-17 23:16:24,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 829 states. [2022-03-17 23:16:24,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 829 to 703. [2022-03-17 23:16:24,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 703 states, 556 states have (on average 1.2733812949640289) internal successors, (708), 572 states have internal predecessors, (708), 76 states have call successors, (76), 49 states have call predecessors, (76), 70 states have return successors, (100), 90 states have call predecessors, (100), 70 states have call successors, (100) [2022-03-17 23:16:24,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 703 states to 703 states and 884 transitions. [2022-03-17 23:16:24,625 INFO L78 Accepts]: Start accepts. Automaton has 703 states and 884 transitions. Word has length 67 [2022-03-17 23:16:24,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 23:16:24,625 INFO L478 AbstractCegarLoop]: Abstraction has 703 states and 884 transitions. [2022-03-17 23:16:24,625 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.1) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (9), 9 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2022-03-17 23:16:24,625 INFO L276 IsEmpty]: Start isEmpty. Operand 703 states and 884 transitions. [2022-03-17 23:16:24,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-03-17 23:16:24,626 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 23:16:24,626 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 23:16:24,627 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2022-03-17 23:16:24,627 INFO L403 AbstractCegarLoop]: === Iteration 48 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 23:16:24,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 23:16:24,627 INFO L85 PathProgramCache]: Analyzing trace with hash -2058592464, now seen corresponding path program 1 times [2022-03-17 23:16:24,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 23:16:24,627 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808720755] [2022-03-17 23:16:24,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 23:16:24,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 23:16:24,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:24,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 23:16:24,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:24,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-17 23:16:24,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:24,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-17 23:16:24,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:24,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-17 23:16:24,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:24,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-17 23:16:24,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:24,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-03-17 23:16:24,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:24,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-17 23:16:24,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:24,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 23:16:24,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 23:16:24,774 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808720755] [2022-03-17 23:16:24,774 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [808720755] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 23:16:24,774 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 23:16:24,774 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-17 23:16:24,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744019835] [2022-03-17 23:16:24,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 23:16:24,774 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-17 23:16:24,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 23:16:24,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-17 23:16:24,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2022-03-17 23:16:24,774 INFO L87 Difference]: Start difference. First operand 703 states and 884 transitions. Second operand has 12 states, 12 states have (on average 4.25) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-03-17 23:16:25,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 23:16:25,804 INFO L93 Difference]: Finished difference Result 786 states and 995 transitions. [2022-03-17 23:16:25,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-17 23:16:25,804 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.25) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 67 [2022-03-17 23:16:25,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 23:16:25,806 INFO L225 Difference]: With dead ends: 786 [2022-03-17 23:16:25,806 INFO L226 Difference]: Without dead ends: 747 [2022-03-17 23:16:25,822 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2022-03-17 23:16:25,823 INFO L912 BasicCegarLoop]: 439 mSDtfsCounter, 950 mSDsluCounter, 779 mSDsCounter, 0 mSdLazyCounter, 1456 mSolverCounterSat, 360 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 952 SdHoareTripleChecker+Valid, 1218 SdHoareTripleChecker+Invalid, 1816 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 360 IncrementalHoareTripleChecker+Valid, 1456 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-03-17 23:16:25,824 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [952 Valid, 1218 Invalid, 1816 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [360 Valid, 1456 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-03-17 23:16:25,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 747 states. [2022-03-17 23:16:25,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 747 to 698. [2022-03-17 23:16:25,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 698 states, 552 states have (on average 1.2735507246376812) internal successors, (703), 568 states have internal predecessors, (703), 75 states have call successors, (75), 49 states have call predecessors, (75), 70 states have return successors, (99), 89 states have call predecessors, (99), 69 states have call successors, (99) [2022-03-17 23:16:25,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 698 states to 698 states and 877 transitions. [2022-03-17 23:16:25,882 INFO L78 Accepts]: Start accepts. Automaton has 698 states and 877 transitions. Word has length 67 [2022-03-17 23:16:25,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 23:16:25,882 INFO L478 AbstractCegarLoop]: Abstraction has 698 states and 877 transitions. [2022-03-17 23:16:25,882 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.25) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-03-17 23:16:25,882 INFO L276 IsEmpty]: Start isEmpty. Operand 698 states and 877 transitions. [2022-03-17 23:16:25,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-03-17 23:16:25,883 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 23:16:25,883 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 23:16:25,883 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2022-03-17 23:16:25,883 INFO L403 AbstractCegarLoop]: === Iteration 49 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 23:16:25,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 23:16:25,883 INFO L85 PathProgramCache]: Analyzing trace with hash -238065346, now seen corresponding path program 1 times [2022-03-17 23:16:25,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 23:16:25,883 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101222235] [2022-03-17 23:16:25,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 23:16:25,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 23:16:25,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:25,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 23:16:25,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:25,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-17 23:16:25,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:25,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-17 23:16:25,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:25,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-17 23:16:25,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:25,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-03-17 23:16:25,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:25,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-03-17 23:16:25,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:26,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-17 23:16:26,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:26,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 23:16:26,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 23:16:26,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101222235] [2022-03-17 23:16:26,018 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1101222235] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 23:16:26,018 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 23:16:26,018 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-03-17 23:16:26,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051077221] [2022-03-17 23:16:26,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 23:16:26,018 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-17 23:16:26,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 23:16:26,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-17 23:16:26,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-03-17 23:16:26,018 INFO L87 Difference]: Start difference. First operand 698 states and 877 transitions. Second operand has 10 states, 10 states have (on average 5.2) internal successors, (52), 3 states have internal predecessors, (52), 2 states have call successors, (9), 9 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2022-03-17 23:16:26,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 23:16:26,689 INFO L93 Difference]: Finished difference Result 778 states and 992 transitions. [2022-03-17 23:16:26,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-17 23:16:26,690 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.2) internal successors, (52), 3 states have internal predecessors, (52), 2 states have call successors, (9), 9 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) Word has length 68 [2022-03-17 23:16:26,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 23:16:26,691 INFO L225 Difference]: With dead ends: 778 [2022-03-17 23:16:26,691 INFO L226 Difference]: Without dead ends: 733 [2022-03-17 23:16:26,692 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 9 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=98, Unknown=0, NotChecked=0, Total=156 [2022-03-17 23:16:26,693 INFO L912 BasicCegarLoop]: 453 mSDtfsCounter, 1307 mSDsluCounter, 377 mSDsCounter, 0 mSdLazyCounter, 752 mSolverCounterSat, 465 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1323 SdHoareTripleChecker+Valid, 830 SdHoareTripleChecker+Invalid, 1217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 465 IncrementalHoareTripleChecker+Valid, 752 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-17 23:16:26,695 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [1323 Valid, 830 Invalid, 1217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [465 Valid, 752 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-17 23:16:26,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 733 states. [2022-03-17 23:16:26,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 733 to 679. [2022-03-17 23:16:26,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 679 states, 538 states have (on average 1.2639405204460967) internal successors, (680), 553 states have internal predecessors, (680), 74 states have call successors, (74), 48 states have call predecessors, (74), 66 states have return successors, (95), 85 states have call predecessors, (95), 68 states have call successors, (95) [2022-03-17 23:16:26,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 679 states to 679 states and 849 transitions. [2022-03-17 23:16:26,749 INFO L78 Accepts]: Start accepts. Automaton has 679 states and 849 transitions. Word has length 68 [2022-03-17 23:16:26,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 23:16:26,749 INFO L478 AbstractCegarLoop]: Abstraction has 679 states and 849 transitions. [2022-03-17 23:16:26,749 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.2) internal successors, (52), 3 states have internal predecessors, (52), 2 states have call successors, (9), 9 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2022-03-17 23:16:26,749 INFO L276 IsEmpty]: Start isEmpty. Operand 679 states and 849 transitions. [2022-03-17 23:16:26,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-03-17 23:16:26,750 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 23:16:26,750 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 23:16:26,751 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2022-03-17 23:16:26,751 INFO L403 AbstractCegarLoop]: === Iteration 50 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 23:16:26,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 23:16:26,751 INFO L85 PathProgramCache]: Analyzing trace with hash -653091009, now seen corresponding path program 1 times [2022-03-17 23:16:26,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 23:16:26,751 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515192840] [2022-03-17 23:16:26,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 23:16:26,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 23:16:26,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:26,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 23:16:26,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:26,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-17 23:16:26,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:26,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-17 23:16:26,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:26,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-17 23:16:26,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:26,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-03-17 23:16:26,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:26,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-03-17 23:16:26,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:26,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-17 23:16:26,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:26,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 23:16:26,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 23:16:26,909 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515192840] [2022-03-17 23:16:26,909 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [515192840] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 23:16:26,909 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 23:16:26,909 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-17 23:16:26,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698608770] [2022-03-17 23:16:26,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 23:16:26,909 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-17 23:16:26,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 23:16:26,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-17 23:16:26,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2022-03-17 23:16:26,910 INFO L87 Difference]: Start difference. First operand 679 states and 849 transitions. Second operand has 12 states, 12 states have (on average 4.333333333333333) internal successors, (52), 5 states have internal predecessors, (52), 3 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 4 states have call predecessors, (7), 2 states have call successors, (7) [2022-03-17 23:16:27,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 23:16:27,903 INFO L93 Difference]: Finished difference Result 812 states and 1032 transitions. [2022-03-17 23:16:27,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-17 23:16:27,903 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.333333333333333) internal successors, (52), 5 states have internal predecessors, (52), 3 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 4 states have call predecessors, (7), 2 states have call successors, (7) Word has length 68 [2022-03-17 23:16:27,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 23:16:27,905 INFO L225 Difference]: With dead ends: 812 [2022-03-17 23:16:27,905 INFO L226 Difference]: Without dead ends: 803 [2022-03-17 23:16:27,906 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=113, Invalid=267, Unknown=0, NotChecked=0, Total=380 [2022-03-17 23:16:27,906 INFO L912 BasicCegarLoop]: 441 mSDtfsCounter, 1044 mSDsluCounter, 411 mSDsCounter, 0 mSdLazyCounter, 1353 mSolverCounterSat, 351 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1051 SdHoareTripleChecker+Valid, 852 SdHoareTripleChecker+Invalid, 1704 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 351 IncrementalHoareTripleChecker+Valid, 1353 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-17 23:16:27,906 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [1051 Valid, 852 Invalid, 1704 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [351 Valid, 1353 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-17 23:16:27,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 803 states. [2022-03-17 23:16:27,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 803 to 679. [2022-03-17 23:16:27,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 679 states, 538 states have (on average 1.2602230483271375) internal successors, (678), 553 states have internal predecessors, (678), 74 states have call successors, (74), 48 states have call predecessors, (74), 66 states have return successors, (95), 85 states have call predecessors, (95), 68 states have call successors, (95) [2022-03-17 23:16:27,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 679 states to 679 states and 847 transitions. [2022-03-17 23:16:27,980 INFO L78 Accepts]: Start accepts. Automaton has 679 states and 847 transitions. Word has length 68 [2022-03-17 23:16:27,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 23:16:27,980 INFO L478 AbstractCegarLoop]: Abstraction has 679 states and 847 transitions. [2022-03-17 23:16:27,980 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.333333333333333) internal successors, (52), 5 states have internal predecessors, (52), 3 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 4 states have call predecessors, (7), 2 states have call successors, (7) [2022-03-17 23:16:27,980 INFO L276 IsEmpty]: Start isEmpty. Operand 679 states and 847 transitions. [2022-03-17 23:16:27,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-03-17 23:16:27,981 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 23:16:27,981 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 23:16:27,982 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2022-03-17 23:16:27,982 INFO L403 AbstractCegarLoop]: === Iteration 51 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 23:16:27,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 23:16:27,982 INFO L85 PathProgramCache]: Analyzing trace with hash -1034853120, now seen corresponding path program 1 times [2022-03-17 23:16:27,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 23:16:27,982 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254981263] [2022-03-17 23:16:27,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 23:16:27,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 23:16:27,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:28,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 23:16:28,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:28,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-17 23:16:28,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:28,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-17 23:16:28,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:28,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-17 23:16:28,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:28,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-17 23:16:28,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:28,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-17 23:16:28,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:28,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-03-17 23:16:28,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:28,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-03-17 23:16:28,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:28,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-17 23:16:28,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:28,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 23:16:28,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 23:16:28,197 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [254981263] [2022-03-17 23:16:28,197 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [254981263] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 23:16:28,197 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 23:16:28,197 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-17 23:16:28,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702206795] [2022-03-17 23:16:28,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 23:16:28,197 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-17 23:16:28,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 23:16:28,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-17 23:16:28,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=359, Unknown=0, NotChecked=0, Total=420 [2022-03-17 23:16:28,198 INFO L87 Difference]: Start difference. First operand 679 states and 847 transitions. Second operand has 21 states, 20 states have (on average 2.7) internal successors, (54), 10 states have internal predecessors, (54), 4 states have call successors, (11), 10 states have call predecessors, (11), 4 states have return successors, (9), 5 states have call predecessors, (9), 3 states have call successors, (9) [2022-03-17 23:16:29,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 23:16:29,629 INFO L93 Difference]: Finished difference Result 768 states and 974 transitions. [2022-03-17 23:16:29,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-03-17 23:16:29,630 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 2.7) internal successors, (54), 10 states have internal predecessors, (54), 4 states have call successors, (11), 10 states have call predecessors, (11), 4 states have return successors, (9), 5 states have call predecessors, (9), 3 states have call successors, (9) Word has length 74 [2022-03-17 23:16:29,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 23:16:29,632 INFO L225 Difference]: With dead ends: 768 [2022-03-17 23:16:29,632 INFO L226 Difference]: Without dead ends: 743 [2022-03-17 23:16:29,632 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=120, Invalid=692, Unknown=0, NotChecked=0, Total=812 [2022-03-17 23:16:29,632 INFO L912 BasicCegarLoop]: 446 mSDtfsCounter, 765 mSDsluCounter, 2144 mSDsCounter, 0 mSdLazyCounter, 4384 mSolverCounterSat, 286 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 770 SdHoareTripleChecker+Valid, 2590 SdHoareTripleChecker+Invalid, 4670 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 286 IncrementalHoareTripleChecker+Valid, 4384 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-03-17 23:16:29,632 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [770 Valid, 2590 Invalid, 4670 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [286 Valid, 4384 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-03-17 23:16:29,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 743 states. [2022-03-17 23:16:29,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 743 to 677. [2022-03-17 23:16:29,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 677 states, 537 states have (on average 1.2588454376163873) internal successors, (676), 552 states have internal predecessors, (676), 73 states have call successors, (73), 48 states have call predecessors, (73), 66 states have return successors, (94), 84 states have call predecessors, (94), 67 states have call successors, (94) [2022-03-17 23:16:29,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 677 states to 677 states and 843 transitions. [2022-03-17 23:16:29,734 INFO L78 Accepts]: Start accepts. Automaton has 677 states and 843 transitions. Word has length 74 [2022-03-17 23:16:29,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 23:16:29,735 INFO L478 AbstractCegarLoop]: Abstraction has 677 states and 843 transitions. [2022-03-17 23:16:29,735 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 2.7) internal successors, (54), 10 states have internal predecessors, (54), 4 states have call successors, (11), 10 states have call predecessors, (11), 4 states have return successors, (9), 5 states have call predecessors, (9), 3 states have call successors, (9) [2022-03-17 23:16:29,735 INFO L276 IsEmpty]: Start isEmpty. Operand 677 states and 843 transitions. [2022-03-17 23:16:29,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-17 23:16:29,736 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 23:16:29,736 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 23:16:29,736 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2022-03-17 23:16:29,736 INFO L403 AbstractCegarLoop]: === Iteration 52 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 23:16:29,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 23:16:29,737 INFO L85 PathProgramCache]: Analyzing trace with hash -8057471, now seen corresponding path program 1 times [2022-03-17 23:16:29,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 23:16:29,737 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963226046] [2022-03-17 23:16:29,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 23:16:29,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 23:16:29,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:29,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 23:16:29,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:29,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-17 23:16:29,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:29,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-17 23:16:29,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:29,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-17 23:16:29,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:29,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-17 23:16:29,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:29,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-03-17 23:16:29,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:29,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-17 23:16:29,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:29,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-17 23:16:29,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:29,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 23:16:29,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 23:16:29,975 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963226046] [2022-03-17 23:16:29,975 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [963226046] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 23:16:29,975 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 23:16:29,975 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2022-03-17 23:16:29,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101536446] [2022-03-17 23:16:29,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 23:16:29,975 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-03-17 23:16:29,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 23:16:29,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-03-17 23:16:29,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=441, Unknown=0, NotChecked=0, Total=506 [2022-03-17 23:16:29,976 INFO L87 Difference]: Start difference. First operand 677 states and 843 transitions. Second operand has 23 states, 22 states have (on average 2.3636363636363638) internal successors, (52), 11 states have internal predecessors, (52), 4 states have call successors, (10), 10 states have call predecessors, (10), 5 states have return successors, (8), 6 states have call predecessors, (8), 3 states have call successors, (8) [2022-03-17 23:16:31,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 23:16:31,560 INFO L93 Difference]: Finished difference Result 749 states and 942 transitions. [2022-03-17 23:16:31,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-03-17 23:16:31,560 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 2.3636363636363638) internal successors, (52), 11 states have internal predecessors, (52), 4 states have call successors, (10), 10 states have call predecessors, (10), 5 states have return successors, (8), 6 states have call predecessors, (8), 3 states have call successors, (8) Word has length 70 [2022-03-17 23:16:31,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 23:16:31,562 INFO L225 Difference]: With dead ends: 749 [2022-03-17 23:16:31,562 INFO L226 Difference]: Without dead ends: 721 [2022-03-17 23:16:31,562 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=148, Invalid=908, Unknown=0, NotChecked=0, Total=1056 [2022-03-17 23:16:31,564 INFO L912 BasicCegarLoop]: 438 mSDtfsCounter, 733 mSDsluCounter, 2339 mSDsCounter, 0 mSdLazyCounter, 5041 mSolverCounterSat, 275 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 735 SdHoareTripleChecker+Valid, 2777 SdHoareTripleChecker+Invalid, 5316 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 275 IncrementalHoareTripleChecker+Valid, 5041 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-03-17 23:16:31,564 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [735 Valid, 2777 Invalid, 5316 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [275 Valid, 5041 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-03-17 23:16:31,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 721 states. [2022-03-17 23:16:31,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 721 to 673. [2022-03-17 23:16:31,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 673 states, 534 states have (on average 1.2584269662921348) internal successors, (672), 549 states have internal predecessors, (672), 72 states have call successors, (72), 48 states have call predecessors, (72), 66 states have return successors, (93), 83 states have call predecessors, (93), 66 states have call successors, (93) [2022-03-17 23:16:31,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 673 states to 673 states and 837 transitions. [2022-03-17 23:16:31,662 INFO L78 Accepts]: Start accepts. Automaton has 673 states and 837 transitions. Word has length 70 [2022-03-17 23:16:31,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 23:16:31,662 INFO L478 AbstractCegarLoop]: Abstraction has 673 states and 837 transitions. [2022-03-17 23:16:31,662 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 2.3636363636363638) internal successors, (52), 11 states have internal predecessors, (52), 4 states have call successors, (10), 10 states have call predecessors, (10), 5 states have return successors, (8), 6 states have call predecessors, (8), 3 states have call successors, (8) [2022-03-17 23:16:31,662 INFO L276 IsEmpty]: Start isEmpty. Operand 673 states and 837 transitions. [2022-03-17 23:16:31,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-03-17 23:16:31,663 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 23:16:31,663 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 23:16:31,663 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2022-03-17 23:16:31,664 INFO L403 AbstractCegarLoop]: === Iteration 53 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 23:16:31,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 23:16:31,664 INFO L85 PathProgramCache]: Analyzing trace with hash 300413188, now seen corresponding path program 1 times [2022-03-17 23:16:31,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 23:16:31,664 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663361793] [2022-03-17 23:16:31,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 23:16:31,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 23:16:31,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:31,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 23:16:31,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:31,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-17 23:16:31,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:31,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-17 23:16:31,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:31,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-17 23:16:31,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:31,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-03-17 23:16:31,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:31,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-03-17 23:16:31,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:31,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-17 23:16:31,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:31,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 23:16:31,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 23:16:31,820 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663361793] [2022-03-17 23:16:31,820 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [663361793] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 23:16:31,820 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 23:16:31,820 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-17 23:16:31,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546196638] [2022-03-17 23:16:31,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 23:16:31,820 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-17 23:16:31,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 23:16:31,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-17 23:16:31,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2022-03-17 23:16:31,820 INFO L87 Difference]: Start difference. First operand 673 states and 837 transitions. Second operand has 12 states, 12 states have (on average 4.416666666666667) internal successors, (53), 5 states have internal predecessors, (53), 3 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 4 states have call predecessors, (7), 2 states have call successors, (7) [2022-03-17 23:16:32,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 23:16:32,935 INFO L93 Difference]: Finished difference Result 800 states and 1011 transitions. [2022-03-17 23:16:32,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-03-17 23:16:32,935 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.416666666666667) internal successors, (53), 5 states have internal predecessors, (53), 3 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 4 states have call predecessors, (7), 2 states have call successors, (7) Word has length 69 [2022-03-17 23:16:32,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 23:16:32,937 INFO L225 Difference]: With dead ends: 800 [2022-03-17 23:16:32,937 INFO L226 Difference]: Without dead ends: 796 [2022-03-17 23:16:32,937 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=137, Invalid=325, Unknown=0, NotChecked=0, Total=462 [2022-03-17 23:16:32,937 INFO L912 BasicCegarLoop]: 446 mSDtfsCounter, 1448 mSDsluCounter, 498 mSDsCounter, 0 mSdLazyCounter, 1846 mSolverCounterSat, 503 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1455 SdHoareTripleChecker+Valid, 944 SdHoareTripleChecker+Invalid, 2349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 503 IncrementalHoareTripleChecker+Valid, 1846 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-17 23:16:32,937 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [1455 Valid, 944 Invalid, 2349 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [503 Valid, 1846 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-17 23:16:32,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 796 states. [2022-03-17 23:16:32,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 796 to 671. [2022-03-17 23:16:32,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 671 states, 532 states have (on average 1.2575187969924813) internal successors, (669), 547 states have internal predecessors, (669), 72 states have call successors, (72), 48 states have call predecessors, (72), 66 states have return successors, (93), 83 states have call predecessors, (93), 66 states have call successors, (93) [2022-03-17 23:16:32,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 671 states to 671 states and 834 transitions. [2022-03-17 23:16:32,995 INFO L78 Accepts]: Start accepts. Automaton has 671 states and 834 transitions. Word has length 69 [2022-03-17 23:16:32,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 23:16:32,995 INFO L478 AbstractCegarLoop]: Abstraction has 671 states and 834 transitions. [2022-03-17 23:16:32,995 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.416666666666667) internal successors, (53), 5 states have internal predecessors, (53), 3 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 4 states have call predecessors, (7), 2 states have call successors, (7) [2022-03-17 23:16:32,995 INFO L276 IsEmpty]: Start isEmpty. Operand 671 states and 834 transitions. [2022-03-17 23:16:32,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-03-17 23:16:32,996 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 23:16:32,996 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 23:16:32,996 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2022-03-17 23:16:32,996 INFO L403 AbstractCegarLoop]: === Iteration 54 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 23:16:32,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 23:16:32,997 INFO L85 PathProgramCache]: Analyzing trace with hash 300444932, now seen corresponding path program 1 times [2022-03-17 23:16:32,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 23:16:32,997 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793248910] [2022-03-17 23:16:32,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 23:16:32,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 23:16:33,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:33,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 23:16:33,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:33,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-17 23:16:33,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:33,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-17 23:16:33,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:33,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-17 23:16:33,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:33,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-03-17 23:16:33,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:33,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-03-17 23:16:33,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:33,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-17 23:16:33,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:33,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 23:16:33,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 23:16:33,205 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793248910] [2022-03-17 23:16:33,205 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1793248910] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 23:16:33,205 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 23:16:33,205 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-03-17 23:16:33,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308289063] [2022-03-17 23:16:33,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 23:16:33,206 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-03-17 23:16:33,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 23:16:33,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-03-17 23:16:33,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=256, Unknown=0, NotChecked=0, Total=306 [2022-03-17 23:16:33,207 INFO L87 Difference]: Start difference. First operand 671 states and 834 transitions. Second operand has 18 states, 18 states have (on average 2.9444444444444446) internal successors, (53), 8 states have internal predecessors, (53), 2 states have call successors, (9), 9 states have call predecessors, (9), 4 states have return successors, (7), 4 states have call predecessors, (7), 1 states have call successors, (7) [2022-03-17 23:16:34,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 23:16:34,738 INFO L93 Difference]: Finished difference Result 729 states and 916 transitions. [2022-03-17 23:16:34,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-03-17 23:16:34,738 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.9444444444444446) internal successors, (53), 8 states have internal predecessors, (53), 2 states have call successors, (9), 9 states have call predecessors, (9), 4 states have return successors, (7), 4 states have call predecessors, (7), 1 states have call successors, (7) Word has length 69 [2022-03-17 23:16:34,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 23:16:34,740 INFO L225 Difference]: With dead ends: 729 [2022-03-17 23:16:34,740 INFO L226 Difference]: Without dead ends: 694 [2022-03-17 23:16:34,740 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=100, Invalid=656, Unknown=0, NotChecked=0, Total=756 [2022-03-17 23:16:34,740 INFO L912 BasicCegarLoop]: 387 mSDtfsCounter, 593 mSDsluCounter, 1196 mSDsCounter, 0 mSdLazyCounter, 3627 mSolverCounterSat, 207 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 606 SdHoareTripleChecker+Valid, 1583 SdHoareTripleChecker+Invalid, 3834 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 207 IncrementalHoareTripleChecker+Valid, 3627 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-03-17 23:16:34,740 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [606 Valid, 1583 Invalid, 3834 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [207 Valid, 3627 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-03-17 23:16:34,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 694 states. [2022-03-17 23:16:34,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 694 to 642. [2022-03-17 23:16:34,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 642 states, 508 states have (on average 1.2539370078740157) internal successors, (637), 522 states have internal predecessors, (637), 71 states have call successors, (71), 47 states have call predecessors, (71), 62 states have return successors, (89), 79 states have call predecessors, (89), 65 states have call successors, (89) [2022-03-17 23:16:34,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 797 transitions. [2022-03-17 23:16:34,795 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 797 transitions. Word has length 69 [2022-03-17 23:16:34,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 23:16:34,796 INFO L478 AbstractCegarLoop]: Abstraction has 642 states and 797 transitions. [2022-03-17 23:16:34,796 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.9444444444444446) internal successors, (53), 8 states have internal predecessors, (53), 2 states have call successors, (9), 9 states have call predecessors, (9), 4 states have return successors, (7), 4 states have call predecessors, (7), 1 states have call successors, (7) [2022-03-17 23:16:34,796 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 797 transitions. [2022-03-17 23:16:34,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-03-17 23:16:34,797 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 23:16:34,797 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 23:16:34,797 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2022-03-17 23:16:34,797 INFO L403 AbstractCegarLoop]: === Iteration 55 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 23:16:34,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 23:16:34,797 INFO L85 PathProgramCache]: Analyzing trace with hash 1365836196, now seen corresponding path program 1 times [2022-03-17 23:16:34,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 23:16:34,797 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052807073] [2022-03-17 23:16:34,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 23:16:34,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 23:16:34,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:34,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 23:16:34,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:34,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-17 23:16:34,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:34,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-17 23:16:34,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:34,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-17 23:16:34,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:34,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-17 23:16:34,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:34,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-03-17 23:16:34,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:34,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-03-17 23:16:34,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:34,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 23:16:34,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 23:16:34,933 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052807073] [2022-03-17 23:16:34,933 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2052807073] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 23:16:34,933 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 23:16:34,933 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-17 23:16:34,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027977078] [2022-03-17 23:16:34,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 23:16:34,934 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-17 23:16:34,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 23:16:34,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-17 23:16:34,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2022-03-17 23:16:34,935 INFO L87 Difference]: Start difference. First operand 642 states and 797 transitions. Second operand has 12 states, 12 states have (on average 4.416666666666667) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-03-17 23:16:35,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 23:16:35,835 INFO L93 Difference]: Finished difference Result 724 states and 905 transitions. [2022-03-17 23:16:35,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-17 23:16:35,836 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.416666666666667) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 69 [2022-03-17 23:16:35,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 23:16:35,838 INFO L225 Difference]: With dead ends: 724 [2022-03-17 23:16:35,838 INFO L226 Difference]: Without dead ends: 685 [2022-03-17 23:16:35,838 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2022-03-17 23:16:35,838 INFO L912 BasicCegarLoop]: 423 mSDtfsCounter, 906 mSDsluCounter, 746 mSDsCounter, 0 mSdLazyCounter, 1235 mSolverCounterSat, 336 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 908 SdHoareTripleChecker+Valid, 1169 SdHoareTripleChecker+Invalid, 1571 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 336 IncrementalHoareTripleChecker+Valid, 1235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-17 23:16:35,838 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [908 Valid, 1169 Invalid, 1571 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [336 Valid, 1235 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-17 23:16:35,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 685 states. [2022-03-17 23:16:35,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 685 to 637. [2022-03-17 23:16:35,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 637 states, 504 states have (on average 1.253968253968254) internal successors, (632), 518 states have internal predecessors, (632), 70 states have call successors, (70), 47 states have call predecessors, (70), 62 states have return successors, (88), 78 states have call predecessors, (88), 64 states have call successors, (88) [2022-03-17 23:16:35,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 637 states to 637 states and 790 transitions. [2022-03-17 23:16:35,893 INFO L78 Accepts]: Start accepts. Automaton has 637 states and 790 transitions. Word has length 69 [2022-03-17 23:16:35,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 23:16:35,893 INFO L478 AbstractCegarLoop]: Abstraction has 637 states and 790 transitions. [2022-03-17 23:16:35,893 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.416666666666667) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-03-17 23:16:35,894 INFO L276 IsEmpty]: Start isEmpty. Operand 637 states and 790 transitions. [2022-03-17 23:16:35,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-03-17 23:16:35,894 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 23:16:35,894 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 23:16:35,895 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2022-03-17 23:16:35,895 INFO L403 AbstractCegarLoop]: === Iteration 56 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 23:16:35,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 23:16:35,895 INFO L85 PathProgramCache]: Analyzing trace with hash -415492251, now seen corresponding path program 1 times [2022-03-17 23:16:35,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 23:16:35,895 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009544775] [2022-03-17 23:16:35,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 23:16:35,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 23:16:35,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:35,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 23:16:35,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:35,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-17 23:16:35,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:35,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-17 23:16:35,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:36,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-17 23:16:36,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:36,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-17 23:16:36,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:36,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-17 23:16:36,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:36,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-03-17 23:16:36,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:36,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 23:16:36,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 23:16:36,127 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009544775] [2022-03-17 23:16:36,127 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1009544775] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 23:16:36,127 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 23:16:36,127 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-03-17 23:16:36,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804168074] [2022-03-17 23:16:36,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 23:16:36,127 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-03-17 23:16:36,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 23:16:36,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-03-17 23:16:36,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=256, Unknown=0, NotChecked=0, Total=306 [2022-03-17 23:16:36,128 INFO L87 Difference]: Start difference. First operand 637 states and 790 transitions. Second operand has 18 states, 18 states have (on average 2.9444444444444446) internal successors, (53), 8 states have internal predecessors, (53), 3 states have call successors, (9), 9 states have call predecessors, (9), 4 states have return successors, (7), 5 states have call predecessors, (7), 2 states have call successors, (7) [2022-03-17 23:16:37,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 23:16:37,445 INFO L93 Difference]: Finished difference Result 712 states and 893 transitions. [2022-03-17 23:16:37,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-03-17 23:16:37,449 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.9444444444444446) internal successors, (53), 8 states have internal predecessors, (53), 3 states have call successors, (9), 9 states have call predecessors, (9), 4 states have return successors, (7), 5 states have call predecessors, (7), 2 states have call successors, (7) Word has length 69 [2022-03-17 23:16:37,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 23:16:37,451 INFO L225 Difference]: With dead ends: 712 [2022-03-17 23:16:37,451 INFO L226 Difference]: Without dead ends: 682 [2022-03-17 23:16:37,451 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=96, Invalid=456, Unknown=0, NotChecked=0, Total=552 [2022-03-17 23:16:37,451 INFO L912 BasicCegarLoop]: 438 mSDtfsCounter, 699 mSDsluCounter, 1647 mSDsCounter, 0 mSdLazyCounter, 3407 mSolverCounterSat, 252 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 702 SdHoareTripleChecker+Valid, 2085 SdHoareTripleChecker+Invalid, 3659 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 252 IncrementalHoareTripleChecker+Valid, 3407 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-03-17 23:16:37,452 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [702 Valid, 2085 Invalid, 3659 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [252 Valid, 3407 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-03-17 23:16:37,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 682 states. [2022-03-17 23:16:37,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 682 to 634. [2022-03-17 23:16:37,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 634 states, 502 states have (on average 1.252988047808765) internal successors, (629), 516 states have internal predecessors, (629), 69 states have call successors, (69), 47 states have call predecessors, (69), 62 states have return successors, (87), 77 states have call predecessors, (87), 63 states have call successors, (87) [2022-03-17 23:16:37,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 634 states to 634 states and 785 transitions. [2022-03-17 23:16:37,507 INFO L78 Accepts]: Start accepts. Automaton has 634 states and 785 transitions. Word has length 69 [2022-03-17 23:16:37,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 23:16:37,507 INFO L478 AbstractCegarLoop]: Abstraction has 634 states and 785 transitions. [2022-03-17 23:16:37,507 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.9444444444444446) internal successors, (53), 8 states have internal predecessors, (53), 3 states have call successors, (9), 9 states have call predecessors, (9), 4 states have return successors, (7), 5 states have call predecessors, (7), 2 states have call successors, (7) [2022-03-17 23:16:37,507 INFO L276 IsEmpty]: Start isEmpty. Operand 634 states and 785 transitions. [2022-03-17 23:16:37,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-03-17 23:16:37,508 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 23:16:37,508 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 23:16:37,508 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2022-03-17 23:16:37,508 INFO L403 AbstractCegarLoop]: === Iteration 57 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 23:16:37,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 23:16:37,509 INFO L85 PathProgramCache]: Analyzing trace with hash 135714178, now seen corresponding path program 1 times [2022-03-17 23:16:37,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 23:16:37,509 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022691027] [2022-03-17 23:16:37,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 23:16:37,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 23:16:37,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:37,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 23:16:37,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:37,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-17 23:16:37,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:37,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-17 23:16:37,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:37,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-17 23:16:37,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:37,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-17 23:16:37,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:37,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-03-17 23:16:37,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:37,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-17 23:16:37,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:37,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-17 23:16:37,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:37,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 23:16:37,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 23:16:37,664 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022691027] [2022-03-17 23:16:37,664 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2022691027] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 23:16:37,665 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 23:16:37,665 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-03-17 23:16:37,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025900496] [2022-03-17 23:16:37,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 23:16:37,665 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-03-17 23:16:37,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 23:16:37,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-03-17 23:16:37,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2022-03-17 23:16:37,665 INFO L87 Difference]: Start difference. First operand 634 states and 785 transitions. Second operand has 13 states, 13 states have (on average 4.076923076923077) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-03-17 23:16:38,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 23:16:38,454 INFO L93 Difference]: Finished difference Result 724 states and 902 transitions. [2022-03-17 23:16:38,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-17 23:16:38,462 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.076923076923077) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 71 [2022-03-17 23:16:38,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 23:16:38,463 INFO L225 Difference]: With dead ends: 724 [2022-03-17 23:16:38,464 INFO L226 Difference]: Without dead ends: 686 [2022-03-17 23:16:38,464 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2022-03-17 23:16:38,464 INFO L912 BasicCegarLoop]: 413 mSDtfsCounter, 1142 mSDsluCounter, 606 mSDsCounter, 0 mSdLazyCounter, 1149 mSolverCounterSat, 418 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1143 SdHoareTripleChecker+Valid, 1019 SdHoareTripleChecker+Invalid, 1567 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 418 IncrementalHoareTripleChecker+Valid, 1149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-17 23:16:38,465 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [1143 Valid, 1019 Invalid, 1567 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [418 Valid, 1149 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-17 23:16:38,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 686 states. [2022-03-17 23:16:38,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 686 to 634. [2022-03-17 23:16:38,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 634 states, 502 states have (on average 1.250996015936255) internal successors, (628), 516 states have internal predecessors, (628), 69 states have call successors, (69), 47 states have call predecessors, (69), 62 states have return successors, (87), 77 states have call predecessors, (87), 63 states have call successors, (87) [2022-03-17 23:16:38,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 634 states to 634 states and 784 transitions. [2022-03-17 23:16:38,522 INFO L78 Accepts]: Start accepts. Automaton has 634 states and 784 transitions. Word has length 71 [2022-03-17 23:16:38,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 23:16:38,522 INFO L478 AbstractCegarLoop]: Abstraction has 634 states and 784 transitions. [2022-03-17 23:16:38,522 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.076923076923077) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-03-17 23:16:38,522 INFO L276 IsEmpty]: Start isEmpty. Operand 634 states and 784 transitions. [2022-03-17 23:16:38,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-03-17 23:16:38,523 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 23:16:38,523 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 23:16:38,523 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2022-03-17 23:16:38,523 INFO L403 AbstractCegarLoop]: === Iteration 58 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 23:16:38,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 23:16:38,523 INFO L85 PathProgramCache]: Analyzing trace with hash 1161206177, now seen corresponding path program 1 times [2022-03-17 23:16:38,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 23:16:38,524 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316576098] [2022-03-17 23:16:38,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 23:16:38,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 23:16:38,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:38,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 23:16:38,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:38,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-17 23:16:38,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:38,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-17 23:16:38,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:38,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-17 23:16:38,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:38,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-17 23:16:38,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:38,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-03-17 23:16:38,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:38,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-17 23:16:38,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:38,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-17 23:16:38,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:38,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 23:16:38,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 23:16:38,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316576098] [2022-03-17 23:16:38,765 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [316576098] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 23:16:38,765 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 23:16:38,765 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-17 23:16:38,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338458236] [2022-03-17 23:16:38,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 23:16:38,766 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-17 23:16:38,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 23:16:38,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-17 23:16:38,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=359, Unknown=0, NotChecked=0, Total=420 [2022-03-17 23:16:38,766 INFO L87 Difference]: Start difference. First operand 634 states and 784 transitions. Second operand has 21 states, 20 states have (on average 2.65) internal successors, (53), 10 states have internal predecessors, (53), 4 states have call successors, (10), 10 states have call predecessors, (10), 4 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) [2022-03-17 23:16:40,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 23:16:40,259 INFO L93 Difference]: Finished difference Result 722 states and 908 transitions. [2022-03-17 23:16:40,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-03-17 23:16:40,259 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 2.65) internal successors, (53), 10 states have internal predecessors, (53), 4 states have call successors, (10), 10 states have call predecessors, (10), 4 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) Word has length 71 [2022-03-17 23:16:40,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 23:16:40,261 INFO L225 Difference]: With dead ends: 722 [2022-03-17 23:16:40,261 INFO L226 Difference]: Without dead ends: 684 [2022-03-17 23:16:40,261 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=120, Invalid=692, Unknown=0, NotChecked=0, Total=812 [2022-03-17 23:16:40,261 INFO L912 BasicCegarLoop]: 422 mSDtfsCounter, 723 mSDsluCounter, 2020 mSDsCounter, 0 mSdLazyCounter, 4178 mSolverCounterSat, 271 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 727 SdHoareTripleChecker+Valid, 2442 SdHoareTripleChecker+Invalid, 4449 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 271 IncrementalHoareTripleChecker+Valid, 4178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-03-17 23:16:40,261 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [727 Valid, 2442 Invalid, 4449 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [271 Valid, 4178 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-03-17 23:16:40,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 684 states. [2022-03-17 23:16:40,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 684 to 629. [2022-03-17 23:16:40,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 629 states, 498 states have (on average 1.2469879518072289) internal successors, (621), 512 states have internal predecessors, (621), 68 states have call successors, (68), 47 states have call predecessors, (68), 62 states have return successors, (85), 76 states have call predecessors, (85), 62 states have call successors, (85) [2022-03-17 23:16:40,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 629 states to 629 states and 774 transitions. [2022-03-17 23:16:40,318 INFO L78 Accepts]: Start accepts. Automaton has 629 states and 774 transitions. Word has length 71 [2022-03-17 23:16:40,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 23:16:40,318 INFO L478 AbstractCegarLoop]: Abstraction has 629 states and 774 transitions. [2022-03-17 23:16:40,318 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 2.65) internal successors, (53), 10 states have internal predecessors, (53), 4 states have call successors, (10), 10 states have call predecessors, (10), 4 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) [2022-03-17 23:16:40,318 INFO L276 IsEmpty]: Start isEmpty. Operand 629 states and 774 transitions. [2022-03-17 23:16:40,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-03-17 23:16:40,319 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 23:16:40,319 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 23:16:40,319 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2022-03-17 23:16:40,319 INFO L403 AbstractCegarLoop]: === Iteration 59 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 23:16:40,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 23:16:40,319 INFO L85 PathProgramCache]: Analyzing trace with hash -1109131485, now seen corresponding path program 1 times [2022-03-17 23:16:40,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 23:16:40,319 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192293104] [2022-03-17 23:16:40,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 23:16:40,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 23:16:40,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:40,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 23:16:40,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:40,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-17 23:16:40,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:40,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-17 23:16:40,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:40,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-17 23:16:40,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:40,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-17 23:16:40,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:40,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-03-17 23:16:40,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:40,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-17 23:16:40,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:40,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-17 23:16:40,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:40,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 23:16:40,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 23:16:40,464 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192293104] [2022-03-17 23:16:40,464 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1192293104] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 23:16:40,464 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 23:16:40,464 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-03-17 23:16:40,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266165112] [2022-03-17 23:16:40,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 23:16:40,464 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-03-17 23:16:40,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 23:16:40,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-03-17 23:16:40,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2022-03-17 23:16:40,465 INFO L87 Difference]: Start difference. First operand 629 states and 774 transitions. Second operand has 13 states, 13 states have (on average 4.076923076923077) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-03-17 23:16:41,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 23:16:41,595 INFO L93 Difference]: Finished difference Result 717 states and 888 transitions. [2022-03-17 23:16:41,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-17 23:16:41,596 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.076923076923077) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 71 [2022-03-17 23:16:41,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 23:16:41,597 INFO L225 Difference]: With dead ends: 717 [2022-03-17 23:16:41,597 INFO L226 Difference]: Without dead ends: 673 [2022-03-17 23:16:41,597 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2022-03-17 23:16:41,598 INFO L912 BasicCegarLoop]: 402 mSDtfsCounter, 257 mSDsluCounter, 918 mSDsCounter, 0 mSdLazyCounter, 1624 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 258 SdHoareTripleChecker+Valid, 1320 SdHoareTripleChecker+Invalid, 1713 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 1624 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-03-17 23:16:41,598 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [258 Valid, 1320 Invalid, 1713 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 1624 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-03-17 23:16:41,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 673 states. [2022-03-17 23:16:41,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 673 to 623. [2022-03-17 23:16:41,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 623 states, 493 states have (on average 1.2474645030425964) internal successors, (615), 507 states have internal predecessors, (615), 67 states have call successors, (67), 47 states have call predecessors, (67), 62 states have return successors, (84), 75 states have call predecessors, (84), 61 states have call successors, (84) [2022-03-17 23:16:41,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 623 states to 623 states and 766 transitions. [2022-03-17 23:16:41,667 INFO L78 Accepts]: Start accepts. Automaton has 623 states and 766 transitions. Word has length 71 [2022-03-17 23:16:41,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 23:16:41,667 INFO L478 AbstractCegarLoop]: Abstraction has 623 states and 766 transitions. [2022-03-17 23:16:41,667 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.076923076923077) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-03-17 23:16:41,668 INFO L276 IsEmpty]: Start isEmpty. Operand 623 states and 766 transitions. [2022-03-17 23:16:41,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-03-17 23:16:41,668 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 23:16:41,668 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 23:16:41,669 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2022-03-17 23:16:41,669 INFO L403 AbstractCegarLoop]: === Iteration 60 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 23:16:41,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 23:16:41,669 INFO L85 PathProgramCache]: Analyzing trace with hash -1256769401, now seen corresponding path program 1 times [2022-03-17 23:16:41,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 23:16:41,669 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481061516] [2022-03-17 23:16:41,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 23:16:41,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 23:16:41,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:41,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 23:16:41,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:41,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-17 23:16:41,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:41,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-17 23:16:41,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:41,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-17 23:16:41,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:41,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-03-17 23:16:41,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:41,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-03-17 23:16:41,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:41,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-17 23:16:41,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:41,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 23:16:41,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 23:16:41,917 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481061516] [2022-03-17 23:16:41,917 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1481061516] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 23:16:41,917 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 23:16:41,918 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-03-17 23:16:41,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185168822] [2022-03-17 23:16:41,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 23:16:41,918 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-03-17 23:16:41,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 23:16:41,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-03-17 23:16:41,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=256, Unknown=0, NotChecked=0, Total=306 [2022-03-17 23:16:41,918 INFO L87 Difference]: Start difference. First operand 623 states and 766 transitions. Second operand has 18 states, 18 states have (on average 3.0555555555555554) internal successors, (55), 8 states have internal predecessors, (55), 2 states have call successors, (9), 9 states have call predecessors, (9), 4 states have return successors, (7), 4 states have call predecessors, (7), 1 states have call successors, (7) [2022-03-17 23:16:43,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 23:16:43,595 INFO L93 Difference]: Finished difference Result 854 states and 1053 transitions. [2022-03-17 23:16:43,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-03-17 23:16:43,595 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.0555555555555554) internal successors, (55), 8 states have internal predecessors, (55), 2 states have call successors, (9), 9 states have call predecessors, (9), 4 states have return successors, (7), 4 states have call predecessors, (7), 1 states have call successors, (7) Word has length 71 [2022-03-17 23:16:43,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 23:16:43,597 INFO L225 Difference]: With dead ends: 854 [2022-03-17 23:16:43,597 INFO L226 Difference]: Without dead ends: 715 [2022-03-17 23:16:43,597 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=112, Invalid=700, Unknown=0, NotChecked=0, Total=812 [2022-03-17 23:16:43,598 INFO L912 BasicCegarLoop]: 373 mSDtfsCounter, 956 mSDsluCounter, 1533 mSDsCounter, 0 mSdLazyCounter, 3698 mSolverCounterSat, 344 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 969 SdHoareTripleChecker+Valid, 1906 SdHoareTripleChecker+Invalid, 4042 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 344 IncrementalHoareTripleChecker+Valid, 3698 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-03-17 23:16:43,598 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [969 Valid, 1906 Invalid, 4042 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [344 Valid, 3698 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-03-17 23:16:43,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 715 states. [2022-03-17 23:16:43,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 715 to 629. [2022-03-17 23:16:43,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 629 states, 499 states have (on average 1.2364729458917836) internal successors, (617), 513 states have internal predecessors, (617), 67 states have call successors, (67), 47 states have call predecessors, (67), 62 states have return successors, (84), 75 states have call predecessors, (84), 61 states have call successors, (84) [2022-03-17 23:16:43,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 629 states to 629 states and 768 transitions. [2022-03-17 23:16:43,656 INFO L78 Accepts]: Start accepts. Automaton has 629 states and 768 transitions. Word has length 71 [2022-03-17 23:16:43,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 23:16:43,657 INFO L478 AbstractCegarLoop]: Abstraction has 629 states and 768 transitions. [2022-03-17 23:16:43,657 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.0555555555555554) internal successors, (55), 8 states have internal predecessors, (55), 2 states have call successors, (9), 9 states have call predecessors, (9), 4 states have return successors, (7), 4 states have call predecessors, (7), 1 states have call successors, (7) [2022-03-17 23:16:43,657 INFO L276 IsEmpty]: Start isEmpty. Operand 629 states and 768 transitions. [2022-03-17 23:16:43,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-03-17 23:16:43,658 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 23:16:43,658 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 23:16:43,658 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2022-03-17 23:16:43,658 INFO L403 AbstractCegarLoop]: === Iteration 61 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 23:16:43,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 23:16:43,658 INFO L85 PathProgramCache]: Analyzing trace with hash 958622839, now seen corresponding path program 1 times [2022-03-17 23:16:43,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 23:16:43,658 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295665401] [2022-03-17 23:16:43,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 23:16:43,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 23:16:43,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:43,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 23:16:43,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:43,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-17 23:16:43,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:43,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-17 23:16:43,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:43,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-17 23:16:43,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:43,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-17 23:16:43,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:43,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-03-17 23:16:43,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:43,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-17 23:16:43,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:43,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-17 23:16:43,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:43,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 23:16:43,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 23:16:43,827 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295665401] [2022-03-17 23:16:43,827 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1295665401] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 23:16:43,827 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 23:16:43,827 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-03-17 23:16:43,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182535611] [2022-03-17 23:16:43,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 23:16:43,828 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-03-17 23:16:43,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 23:16:43,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-03-17 23:16:43,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2022-03-17 23:16:43,828 INFO L87 Difference]: Start difference. First operand 629 states and 768 transitions. Second operand has 13 states, 13 states have (on average 4.230769230769231) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-03-17 23:16:44,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 23:16:44,452 INFO L93 Difference]: Finished difference Result 717 states and 882 transitions. [2022-03-17 23:16:44,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-17 23:16:44,452 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.230769230769231) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 73 [2022-03-17 23:16:44,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 23:16:44,454 INFO L225 Difference]: With dead ends: 717 [2022-03-17 23:16:44,454 INFO L226 Difference]: Without dead ends: 667 [2022-03-17 23:16:44,454 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2022-03-17 23:16:44,454 INFO L912 BasicCegarLoop]: 393 mSDtfsCounter, 658 mSDsluCounter, 606 mSDsCounter, 0 mSdLazyCounter, 1093 mSolverCounterSat, 242 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 659 SdHoareTripleChecker+Valid, 999 SdHoareTripleChecker+Invalid, 1335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 242 IncrementalHoareTripleChecker+Valid, 1093 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-17 23:16:44,454 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [659 Valid, 999 Invalid, 1335 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [242 Valid, 1093 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-17 23:16:44,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 667 states. [2022-03-17 23:16:44,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 667 to 617. [2022-03-17 23:16:44,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 617 states, 488 states have (on average 1.2315573770491803) internal successors, (601), 502 states have internal predecessors, (601), 66 states have call successors, (66), 47 states have call predecessors, (66), 62 states have return successors, (83), 74 states have call predecessors, (83), 60 states have call successors, (83) [2022-03-17 23:16:44,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 617 states to 617 states and 750 transitions. [2022-03-17 23:16:44,513 INFO L78 Accepts]: Start accepts. Automaton has 617 states and 750 transitions. Word has length 73 [2022-03-17 23:16:44,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 23:16:44,514 INFO L478 AbstractCegarLoop]: Abstraction has 617 states and 750 transitions. [2022-03-17 23:16:44,514 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.230769230769231) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-03-17 23:16:44,514 INFO L276 IsEmpty]: Start isEmpty. Operand 617 states and 750 transitions. [2022-03-17 23:16:44,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-03-17 23:16:44,515 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 23:16:44,515 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 23:16:44,515 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2022-03-17 23:16:44,515 INFO L403 AbstractCegarLoop]: === Iteration 62 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 23:16:44,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 23:16:44,515 INFO L85 PathProgramCache]: Analyzing trace with hash 1514534938, now seen corresponding path program 1 times [2022-03-17 23:16:44,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 23:16:44,515 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285145234] [2022-03-17 23:16:44,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 23:16:44,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 23:16:44,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:44,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 23:16:44,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:44,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-17 23:16:44,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:44,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-17 23:16:44,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:44,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-17 23:16:44,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:44,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-03-17 23:16:44,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:44,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-03-17 23:16:44,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:44,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-17 23:16:44,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:44,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-17 23:16:44,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:44,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 23:16:44,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 23:16:44,755 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285145234] [2022-03-17 23:16:44,755 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1285145234] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 23:16:44,755 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 23:16:44,755 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-17 23:16:44,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823880352] [2022-03-17 23:16:44,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 23:16:44,756 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-17 23:16:44,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 23:16:44,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-17 23:16:44,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=276, Unknown=0, NotChecked=0, Total=342 [2022-03-17 23:16:44,756 INFO L87 Difference]: Start difference. First operand 617 states and 750 transitions. Second operand has 19 states, 19 states have (on average 2.8947368421052633) internal successors, (55), 10 states have internal predecessors, (55), 5 states have call successors, (10), 10 states have call predecessors, (10), 4 states have return successors, (8), 6 states have call predecessors, (8), 4 states have call successors, (8) [2022-03-17 23:16:47,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 23:16:47,832 INFO L93 Difference]: Finished difference Result 1504 states and 1836 transitions. [2022-03-17 23:16:47,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-03-17 23:16:47,833 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.8947368421052633) internal successors, (55), 10 states have internal predecessors, (55), 5 states have call successors, (10), 10 states have call predecessors, (10), 4 states have return successors, (8), 6 states have call predecessors, (8), 4 states have call successors, (8) Word has length 73 [2022-03-17 23:16:47,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 23:16:47,836 INFO L225 Difference]: With dead ends: 1504 [2022-03-17 23:16:47,836 INFO L226 Difference]: Without dead ends: 1357 [2022-03-17 23:16:47,837 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 749 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=676, Invalid=2630, Unknown=0, NotChecked=0, Total=3306 [2022-03-17 23:16:47,837 INFO L912 BasicCegarLoop]: 412 mSDtfsCounter, 3376 mSDsluCounter, 1090 mSDsCounter, 0 mSdLazyCounter, 4421 mSolverCounterSat, 1144 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3381 SdHoareTripleChecker+Valid, 1502 SdHoareTripleChecker+Invalid, 5565 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1144 IncrementalHoareTripleChecker+Valid, 4421 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-03-17 23:16:47,837 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [3381 Valid, 1502 Invalid, 5565 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1144 Valid, 4421 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-03-17 23:16:47,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1357 states. [2022-03-17 23:16:47,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1357 to 978. [2022-03-17 23:16:47,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 978 states, 777 states have (on average 1.250965250965251) internal successors, (972), 800 states have internal predecessors, (972), 101 states have call successors, (101), 77 states have call predecessors, (101), 99 states have return successors, (132), 107 states have call predecessors, (132), 95 states have call successors, (132) [2022-03-17 23:16:47,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 978 states to 978 states and 1205 transitions. [2022-03-17 23:16:47,959 INFO L78 Accepts]: Start accepts. Automaton has 978 states and 1205 transitions. Word has length 73 [2022-03-17 23:16:47,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 23:16:47,959 INFO L478 AbstractCegarLoop]: Abstraction has 978 states and 1205 transitions. [2022-03-17 23:16:47,959 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.8947368421052633) internal successors, (55), 10 states have internal predecessors, (55), 5 states have call successors, (10), 10 states have call predecessors, (10), 4 states have return successors, (8), 6 states have call predecessors, (8), 4 states have call successors, (8) [2022-03-17 23:16:47,959 INFO L276 IsEmpty]: Start isEmpty. Operand 978 states and 1205 transitions. [2022-03-17 23:16:47,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-17 23:16:47,960 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 23:16:47,960 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 23:16:47,960 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2022-03-17 23:16:47,961 INFO L403 AbstractCegarLoop]: === Iteration 63 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 23:16:47,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 23:16:47,961 INFO L85 PathProgramCache]: Analyzing trace with hash 100059264, now seen corresponding path program 1 times [2022-03-17 23:16:47,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 23:16:47,961 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436114294] [2022-03-17 23:16:47,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 23:16:47,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 23:16:47,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:48,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 23:16:48,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:48,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-17 23:16:48,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:48,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-17 23:16:48,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:48,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-17 23:16:48,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:48,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-17 23:16:48,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:48,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-17 23:16:48,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:48,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-03-17 23:16:48,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:48,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-17 23:16:48,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:48,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 23:16:48,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 23:16:48,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436114294] [2022-03-17 23:16:48,211 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [436114294] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 23:16:48,211 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 23:16:48,211 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-17 23:16:48,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805110863] [2022-03-17 23:16:48,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 23:16:48,211 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-17 23:16:48,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 23:16:48,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-17 23:16:48,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=327, Unknown=0, NotChecked=0, Total=380 [2022-03-17 23:16:48,212 INFO L87 Difference]: Start difference. First operand 978 states and 1205 transitions. Second operand has 20 states, 20 states have (on average 3.05) internal successors, (61), 9 states have internal predecessors, (61), 2 states have call successors, (10), 9 states have call predecessors, (10), 5 states have return successors, (8), 5 states have call predecessors, (8), 1 states have call successors, (8) [2022-03-17 23:16:49,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 23:16:49,804 INFO L93 Difference]: Finished difference Result 1080 states and 1346 transitions. [2022-03-17 23:16:49,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-03-17 23:16:49,805 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 [2022-03-17 23:16:49,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 23:16:49,807 INFO L225 Difference]: With dead ends: 1080 [2022-03-17 23:16:49,807 INFO L226 Difference]: Without dead ends: 1038 [2022-03-17 23:16:49,807 INFO L911 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 [2022-03-17 23:16:49,808 INFO L912 BasicCegarLoop]: 393 mSDtfsCounter, 383 mSDsluCounter, 2031 mSDsCounter, 0 mSdLazyCounter, 3882 mSolverCounterSat, 153 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 386 SdHoareTripleChecker+Valid, 2424 SdHoareTripleChecker+Invalid, 4035 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 153 IncrementalHoareTripleChecker+Valid, 3882 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-03-17 23:16:49,808 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [386 Valid, 2424 Invalid, 4035 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [153 Valid, 3882 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-03-17 23:16:49,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1038 states. [2022-03-17 23:16:49,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1038 to 968. [2022-03-17 23:16:49,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 968 states, 771 states have (on average 1.2503242542153048) internal successors, (964), 794 states have internal predecessors, (964), 97 states have call successors, (97), 77 states have call predecessors, (97), 99 states have return successors, (128), 103 states have call predecessors, (128), 91 states have call successors, (128) [2022-03-17 23:16:49,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 968 states to 968 states and 1189 transitions. [2022-03-17 23:16:49,909 INFO L78 Accepts]: Start accepts. Automaton has 968 states and 1189 transitions. Word has length 79 [2022-03-17 23:16:49,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 23:16:49,910 INFO L478 AbstractCegarLoop]: Abstraction has 968 states and 1189 transitions. [2022-03-17 23:16:49,910 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) [2022-03-17 23:16:49,910 INFO L276 IsEmpty]: Start isEmpty. Operand 968 states and 1189 transitions. [2022-03-17 23:16:49,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-03-17 23:16:49,911 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 23:16:49,911 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 23:16:49,911 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2022-03-17 23:16:49,911 INFO L403 AbstractCegarLoop]: === Iteration 64 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 23:16:49,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 23:16:49,911 INFO L85 PathProgramCache]: Analyzing trace with hash 226042889, now seen corresponding path program 1 times [2022-03-17 23:16:49,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 23:16:49,912 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736023012] [2022-03-17 23:16:49,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 23:16:49,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 23:16:49,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:49,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 23:16:49,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:50,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-17 23:16:50,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:50,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-17 23:16:50,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:50,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-17 23:16:50,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:50,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-17 23:16:50,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:50,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-17 23:16:50,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:50,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-17 23:16:50,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:50,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 23:16:50,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 23:16:50,196 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736023012] [2022-03-17 23:16:50,196 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1736023012] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 23:16:50,196 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 23:16:50,196 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-17 23:16:50,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334119146] [2022-03-17 23:16:50,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 23:16:50,196 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-17 23:16:50,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 23:16:50,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-17 23:16:50,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=296, Unknown=0, NotChecked=0, Total=342 [2022-03-17 23:16:50,197 INFO L87 Difference]: Start difference. First operand 968 states and 1189 transitions. Second operand has 19 states, 19 states have (on average 2.9473684210526314) internal successors, (56), 9 states have internal predecessors, (56), 2 states have call successors, (9), 8 states have call predecessors, (9), 5 states have return successors, (7), 5 states have call predecessors, (7), 1 states have call successors, (7) [2022-03-17 23:16:52,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 23:16:52,110 INFO L93 Difference]: Finished difference Result 1040 states and 1294 transitions. [2022-03-17 23:16:52,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-03-17 23:16:52,111 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.9473684210526314) internal successors, (56), 9 states have internal predecessors, (56), 2 states have call successors, (9), 8 states have call predecessors, (9), 5 states have return successors, (7), 5 states have call predecessors, (7), 1 states have call successors, (7) Word has length 72 [2022-03-17 23:16:52,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 23:16:52,112 INFO L225 Difference]: With dead ends: 1040 [2022-03-17 23:16:52,112 INFO L226 Difference]: Without dead ends: 955 [2022-03-17 23:16:52,113 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=54, Invalid=366, Unknown=0, NotChecked=0, Total=420 [2022-03-17 23:16:52,113 INFO L912 BasicCegarLoop]: 373 mSDtfsCounter, 184 mSDsluCounter, 1892 mSDsCounter, 0 mSdLazyCounter, 4171 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 186 SdHoareTripleChecker+Valid, 2265 SdHoareTripleChecker+Invalid, 4242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 4171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-03-17 23:16:52,113 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [186 Valid, 2265 Invalid, 4242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 4171 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-03-17 23:16:52,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 955 states. [2022-03-17 23:16:52,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 955 to 876. [2022-03-17 23:16:52,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 876 states, 695 states have (on average 1.260431654676259) internal successors, (876), 715 states have internal predecessors, (876), 90 states have call successors, (90), 71 states have call predecessors, (90), 90 states have return successors, (118), 95 states have call predecessors, (118), 85 states have call successors, (118) [2022-03-17 23:16:52,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 876 states to 876 states and 1084 transitions. [2022-03-17 23:16:52,202 INFO L78 Accepts]: Start accepts. Automaton has 876 states and 1084 transitions. Word has length 72 [2022-03-17 23:16:52,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 23:16:52,202 INFO L478 AbstractCegarLoop]: Abstraction has 876 states and 1084 transitions. [2022-03-17 23:16:52,202 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.9473684210526314) internal successors, (56), 9 states have internal predecessors, (56), 2 states have call successors, (9), 8 states have call predecessors, (9), 5 states have return successors, (7), 5 states have call predecessors, (7), 1 states have call successors, (7) [2022-03-17 23:16:52,202 INFO L276 IsEmpty]: Start isEmpty. Operand 876 states and 1084 transitions. [2022-03-17 23:16:52,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-03-17 23:16:52,203 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 23:16:52,203 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 23:16:52,203 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2022-03-17 23:16:52,203 INFO L403 AbstractCegarLoop]: === Iteration 65 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 23:16:52,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 23:16:52,204 INFO L85 PathProgramCache]: Analyzing trace with hash -293312583, now seen corresponding path program 1 times [2022-03-17 23:16:52,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 23:16:52,204 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523568414] [2022-03-17 23:16:52,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 23:16:52,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 23:16:52,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:52,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 23:16:52,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:52,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-17 23:16:52,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:52,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-17 23:16:52,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:52,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-17 23:16:52,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:52,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-03-17 23:16:52,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:52,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-03-17 23:16:52,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:52,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-17 23:16:52,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:52,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-17 23:16:52,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:52,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 23:16:52,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 23:16:52,368 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523568414] [2022-03-17 23:16:52,368 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1523568414] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 23:16:52,368 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 23:16:52,368 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-03-17 23:16:52,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77814697] [2022-03-17 23:16:52,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 23:16:52,369 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-03-17 23:16:52,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 23:16:52,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-03-17 23:16:52,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2022-03-17 23:16:52,369 INFO L87 Difference]: Start difference. First operand 876 states and 1084 transitions. Second operand has 14 states, 14 states have (on average 3.9285714285714284) internal successors, (55), 6 states have internal predecessors, (55), 5 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2022-03-17 23:16:53,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 23:16:53,860 INFO L93 Difference]: Finished difference Result 1263 states and 1556 transitions. [2022-03-17 23:16:53,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-03-17 23:16:53,860 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.9285714285714284) internal successors, (55), 6 states have internal predecessors, (55), 5 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) Word has length 73 [2022-03-17 23:16:53,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 23:16:53,862 INFO L225 Difference]: With dead ends: 1263 [2022-03-17 23:16:53,862 INFO L226 Difference]: Without dead ends: 1133 [2022-03-17 23:16:53,863 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=199, Invalid=613, Unknown=0, NotChecked=0, Total=812 [2022-03-17 23:16:53,863 INFO L912 BasicCegarLoop]: 635 mSDtfsCounter, 1953 mSDsluCounter, 951 mSDsCounter, 0 mSdLazyCounter, 2391 mSolverCounterSat, 604 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1957 SdHoareTripleChecker+Valid, 1586 SdHoareTripleChecker+Invalid, 2995 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 604 IncrementalHoareTripleChecker+Valid, 2391 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-03-17 23:16:53,863 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [1957 Valid, 1586 Invalid, 2995 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [604 Valid, 2391 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-03-17 23:16:53,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1133 states. [2022-03-17 23:16:53,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1133 to 978. [2022-03-17 23:16:53,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 978 states, 776 states have (on average 1.2487113402061856) internal successors, (969), 791 states have internal predecessors, (969), 105 states have call successors, (105), 76 states have call predecessors, (105), 96 states have return successors, (135), 114 states have call predecessors, (135), 100 states have call successors, (135) [2022-03-17 23:16:53,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 978 states to 978 states and 1209 transitions. [2022-03-17 23:16:53,968 INFO L78 Accepts]: Start accepts. Automaton has 978 states and 1209 transitions. Word has length 73 [2022-03-17 23:16:53,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 23:16:53,968 INFO L478 AbstractCegarLoop]: Abstraction has 978 states and 1209 transitions. [2022-03-17 23:16:53,968 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.9285714285714284) internal successors, (55), 6 states have internal predecessors, (55), 5 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2022-03-17 23:16:53,968 INFO L276 IsEmpty]: Start isEmpty. Operand 978 states and 1209 transitions. [2022-03-17 23:16:53,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-03-17 23:16:53,970 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 23:16:53,970 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 23:16:53,970 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2022-03-17 23:16:53,970 INFO L403 AbstractCegarLoop]: === Iteration 66 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 23:16:53,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 23:16:53,970 INFO L85 PathProgramCache]: Analyzing trace with hash -7999414, now seen corresponding path program 1 times [2022-03-17 23:16:53,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 23:16:53,970 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088648034] [2022-03-17 23:16:53,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 23:16:53,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 23:16:53,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:54,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 23:16:54,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:54,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-17 23:16:54,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:54,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-17 23:16:54,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:54,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-17 23:16:54,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:54,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-17 23:16:54,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:54,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-17 23:16:54,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:54,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-03-17 23:16:54,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:54,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-03-17 23:16:54,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:54,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-17 23:16:54,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:54,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 23:16:54,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 23:16:54,107 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088648034] [2022-03-17 23:16:54,108 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1088648034] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 23:16:54,108 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 23:16:54,108 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-03-17 23:16:54,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497758503] [2022-03-17 23:16:54,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 23:16:54,108 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-03-17 23:16:54,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 23:16:54,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-03-17 23:16:54,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2022-03-17 23:16:54,108 INFO L87 Difference]: Start difference. First operand 978 states and 1209 transitions. Second operand has 15 states, 15 states have (on average 3.6666666666666665) internal successors, (55), 5 states have internal predecessors, (55), 2 states have call successors, (11), 10 states have call predecessors, (11), 3 states have return successors, (9), 4 states have call predecessors, (9), 2 states have call successors, (9) [2022-03-17 23:16:54,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 23:16:54,852 INFO L93 Difference]: Finished difference Result 1123 states and 1401 transitions. [2022-03-17 23:16:54,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-17 23:16:54,852 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.6666666666666665) internal successors, (55), 5 states have internal predecessors, (55), 2 states have call successors, (11), 10 states have call predecessors, (11), 3 states have return successors, (9), 4 states have call predecessors, (9), 2 states have call successors, (9) Word has length 75 [2022-03-17 23:16:54,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 23:16:54,854 INFO L225 Difference]: With dead ends: 1123 [2022-03-17 23:16:54,854 INFO L226 Difference]: Without dead ends: 1038 [2022-03-17 23:16:54,854 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2022-03-17 23:16:54,855 INFO L912 BasicCegarLoop]: 355 mSDtfsCounter, 349 mSDsluCounter, 911 mSDsCounter, 0 mSdLazyCounter, 1686 mSolverCounterSat, 139 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 350 SdHoareTripleChecker+Valid, 1266 SdHoareTripleChecker+Invalid, 1825 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 139 IncrementalHoareTripleChecker+Valid, 1686 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-17 23:16:54,855 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [350 Valid, 1266 Invalid, 1825 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [139 Valid, 1686 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-17 23:16:54,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1038 states. [2022-03-17 23:16:54,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1038 to 960. [2022-03-17 23:16:54,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 960 states, 762 states have (on average 1.2480314960629921) internal successors, (951), 777 states have internal predecessors, (951), 101 states have call successors, (101), 76 states have call predecessors, (101), 96 states have return successors, (129), 110 states have call predecessors, (129), 96 states have call successors, (129) [2022-03-17 23:16:54,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 960 states to 960 states and 1181 transitions. [2022-03-17 23:16:54,957 INFO L78 Accepts]: Start accepts. Automaton has 960 states and 1181 transitions. Word has length 75 [2022-03-17 23:16:54,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 23:16:54,957 INFO L478 AbstractCegarLoop]: Abstraction has 960 states and 1181 transitions. [2022-03-17 23:16:54,957 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.6666666666666665) internal successors, (55), 5 states have internal predecessors, (55), 2 states have call successors, (11), 10 states have call predecessors, (11), 3 states have return successors, (9), 4 states have call predecessors, (9), 2 states have call successors, (9) [2022-03-17 23:16:54,957 INFO L276 IsEmpty]: Start isEmpty. Operand 960 states and 1181 transitions. [2022-03-17 23:16:54,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-03-17 23:16:54,958 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 23:16:54,958 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 23:16:54,958 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2022-03-17 23:16:54,958 INFO L403 AbstractCegarLoop]: === Iteration 67 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 23:16:54,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 23:16:54,959 INFO L85 PathProgramCache]: Analyzing trace with hash -1981078137, now seen corresponding path program 1 times [2022-03-17 23:16:54,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 23:16:54,959 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614750050] [2022-03-17 23:16:54,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 23:16:54,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 23:16:54,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-17 23:16:54,968 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-03-17 23:16:54,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-17 23:16:55,027 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-03-17 23:16:55,028 INFO L614 BasicCegarLoop]: Counterexample is feasible [2022-03-17 23:16:55,028 INFO L788 garLoopResultBuilder]: Registering result UNSAFE for location errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-03-17 23:16:55,029 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2022-03-17 23:16:55,031 INFO L718 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 23:16:55,033 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-03-17 23:16:55,145 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.03 11:16:55 BasicIcfg [2022-03-17 23:16:55,145 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-03-17 23:16:55,146 INFO L158 Benchmark]: Toolchain (without parser) took 127134.70ms. Allocated memory was 167.8MB in the beginning and 706.7MB in the end (delta: 539.0MB). Free memory was 111.0MB in the beginning and 473.5MB in the end (delta: -362.5MB). Peak memory consumption was 176.8MB. Max. memory is 8.0GB. [2022-03-17 23:16:55,146 INFO L158 Benchmark]: CDTParser took 0.08ms. Allocated memory is still 167.8MB. Free memory is still 129.3MB. There was no memory consumed. Max. memory is 8.0GB. [2022-03-17 23:16:55,146 INFO L158 Benchmark]: CACSL2BoogieTranslator took 385.87ms. Allocated memory is still 167.8MB. Free memory was 110.8MB in the beginning and 122.3MB in the end (delta: -11.5MB). Peak memory consumption was 6.4MB. Max. memory is 8.0GB. [2022-03-17 23:16:55,146 INFO L158 Benchmark]: Boogie Preprocessor took 88.26ms. Allocated memory is still 167.8MB. Free memory was 122.3MB in the beginning and 117.6MB in the end (delta: 4.7MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2022-03-17 23:16:55,146 INFO L158 Benchmark]: RCFGBuilder took 1019.74ms. Allocated memory is still 167.8MB. Free memory was 117.5MB in the beginning and 51.6MB in the end (delta: 66.0MB). Peak memory consumption was 66.1MB. Max. memory is 8.0GB. [2022-03-17 23:16:55,146 INFO L158 Benchmark]: IcfgTransformer took 77.50ms. Allocated memory was 167.8MB in the beginning and 201.3MB in the end (delta: 33.6MB). Free memory was 51.6MB in the beginning and 164.4MB in the end (delta: -112.8MB). Peak memory consumption was 13.9MB. Max. memory is 8.0GB. [2022-03-17 23:16:55,146 INFO L158 Benchmark]: TraceAbstraction took 125556.44ms. Allocated memory was 201.3MB in the beginning and 706.7MB in the end (delta: 505.4MB). Free memory was 163.9MB in the beginning and 473.5MB in the end (delta: -309.7MB). Peak memory consumption was 195.2MB. Max. memory is 8.0GB. [2022-03-17 23:16:55,148 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.08ms. Allocated memory is still 167.8MB. Free memory is still 129.3MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 385.87ms. Allocated memory is still 167.8MB. Free memory was 110.8MB in the beginning and 122.3MB in the end (delta: -11.5MB). Peak memory consumption was 6.4MB. Max. memory is 8.0GB. * Boogie Preprocessor took 88.26ms. Allocated memory is still 167.8MB. Free memory was 122.3MB in the beginning and 117.6MB in the end (delta: 4.7MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * RCFGBuilder took 1019.74ms. Allocated memory is still 167.8MB. Free memory was 117.5MB in the beginning and 51.6MB in the end (delta: 66.0MB). Peak memory consumption was 66.1MB. Max. memory is 8.0GB. * IcfgTransformer took 77.50ms. Allocated memory was 167.8MB in the beginning and 201.3MB in the end (delta: 33.6MB). Free memory was 51.6MB in the beginning and 164.4MB in the end (delta: -112.8MB). Peak memory consumption was 13.9MB. Max. memory is 8.0GB. * TraceAbstraction took 125556.44ms. Allocated memory was 201.3MB in the beginning and 706.7MB in the end (delta: 505.4MB). Free memory was 163.9MB in the beginning and 473.5MB in the end (delta: -309.7MB). Peak memory consumption was 195.2MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 59]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L32] int s ; [L33] int UNLOADED ; [L34] int NP ; [L35] int DC ; [L36] int SKIP1 ; [L37] int SKIP2 ; [L38] int MPR1 ; [L39] int MPR3 ; [L40] int IPC ; [L41] int pended ; [L42] int compFptr ; [L43] int compRegistered ; [L44] int lowerDriverReturn ; [L45] int setEventCalled ; [L46] int customIrp ; [L47] int routine ; [L48] int myStatus ; [L49] int pirp ; [L50] int Executive ; [L51] int Suspended ; [L52] int KernelMode ; [L53] int DeviceUsageTypePaging ; VAL [\old(compFptr)=147535, \old(compRegistered)=147529, \old(customIrp)=147518, \old(DC)=147533, \old(DeviceUsageTypePaging)=147522, \old(Executive)=147515, \old(IPC)=147524, \old(KernelMode)=147520, \old(lowerDriverReturn)=147513, \old(MPR1)=147526, \old(MPR3)=147536, \old(myStatus)=147532, \old(NP)=147516, \old(pended)=147519, \old(pirp)=147527, \old(routine)=147514, \old(s)=147521, \old(setEventCalled)=147517, \old(SKIP1)=147523, \old(SKIP2)=147530, \old(Suspended)=147528, \old(UNLOADED)=147534, compFptr=0, compRegistered=0, customIrp=0, DC=0, DeviceUsageTypePaging=0, Executive=0, IPC=0, KernelMode=0, lowerDriverReturn=0, MPR1=0, MPR3=0, myStatus=0, NP=0, pended=0, pirp=0, routine=0, s=0, setEventCalled=0, SKIP1=0, SKIP2=0, Suspended=0, UNLOADED=0] [L1718] int pirp__IoStatus__Status ; [L1719] int d = __VERIFIER_nondet_int() ; [L1720] int status = __VERIFIER_nondet_int() ; [L1721] int irp = __VERIFIER_nondet_int() ; [L1722] int we_should_unload = __VERIFIER_nondet_int() ; [L1723] int irp_choice = __VERIFIER_nondet_int() ; [L1724] int devobj = __VERIFIER_nondet_int() ; [L1725] int __cil_tmp9 ; [L1730] s = 0 [L1731] UNLOADED = 0 [L1732] NP = 0 [L1733] DC = 0 [L1734] SKIP1 = 0 [L1735] SKIP2 = 0 [L1736] MPR1 = 0 [L1737] MPR3 = 0 [L1738] IPC = 0 [L1739] pended = 0 [L1740] compFptr = 0 [L1741] compRegistered = 0 [L1742] lowerDriverReturn = 0 [L1743] setEventCalled = 0 [L1744] customIrp = 0 [L1745] routine = 0 [L1746] myStatus = 0 [L1747] pirp = 0 [L1748] Executive = 0 [L1749] Suspended = 5 [L1750] KernelMode = 0 [L1751] DeviceUsageTypePaging = 1 [L1754] pirp = irp VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=0, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=0, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=0, customIrp=0, d=0, DC=0, DeviceUsageTypePaging=1, devobj=0, Executive=0, IPC=0, irp=-2, irp_choice=0, KernelMode=0, lowerDriverReturn=0, MPR1=0, MPR3=0, myStatus=0, NP=0, pended=0, pirp=-2, routine=0, s=0, setEventCalled=0, SKIP1=0, SKIP2=0, status=0, Suspended=5, UNLOADED=0, we_should_unload=0] [L1755] CALL _BLAST_init() VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=0, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=0, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=0, customIrp=0, DC=0, DeviceUsageTypePaging=1, Executive=0, IPC=0, KernelMode=0, lowerDriverReturn=0, MPR1=0, MPR3=0, myStatus=0, NP=0, pended=0, pirp=-2, routine=0, s=0, setEventCalled=0, SKIP1=0, SKIP2=0, Suspended=5, UNLOADED=0] [L67] UNLOADED = 0 [L68] NP = 1 [L69] DC = 2 [L70] SKIP1 = 3 [L71] SKIP2 = 4 [L72] MPR1 = 5 [L73] MPR3 = 6 [L74] IPC = 7 [L75] s = UNLOADED [L76] pended = 0 [L77] compFptr = 0 [L78] compRegistered = 0 [L79] lowerDriverReturn = 0 [L80] setEventCalled = 0 [L81] customIrp = 0 VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=0, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=0, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=0, customIrp=0, DC=2, DeviceUsageTypePaging=1, Executive=0, IPC=7, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=0, NP=1, pended=0, pirp=-2, routine=0, s=0, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1755] RET _BLAST_init() VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=0, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=0, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=0, customIrp=0, d=0, DC=2, DeviceUsageTypePaging=1, devobj=0, Executive=0, IPC=7, irp=-2, irp_choice=0, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=0, NP=1, pended=0, pirp=-2, routine=0, s=0, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, Suspended=5, UNLOADED=0, we_should_unload=0] [L1757] COND TRUE status >= 0 [L1758] s = NP [L1759] customIrp = 0 [L1760] setEventCalled = customIrp [L1761] lowerDriverReturn = setEventCalled [L1762] compRegistered = lowerDriverReturn [L1763] compFptr = compRegistered [L1764] pended = compFptr [L1765] pirp__IoStatus__Status = 0 [L1766] myStatus = 0 VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=0, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=0, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=0, customIrp=0, d=0, DC=2, DeviceUsageTypePaging=1, devobj=0, Executive=0, IPC=7, irp=-2, irp_choice=0, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=0, NP=1, pended=0, pirp=-2, pirp__IoStatus__Status=0, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, Suspended=5, UNLOADED=0, we_should_unload=0] [L1767] COND TRUE irp_choice == 0 [L1768] pirp__IoStatus__Status = -1073741637 [L1769] myStatus = -1073741637 VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=0, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=0, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=0, customIrp=0, d=0, DC=2, DeviceUsageTypePaging=1, devobj=0, Executive=0, IPC=7, irp=-2, irp_choice=0, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=0, pirp=-2, pirp__IoStatus__Status=-1073741637, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, Suspended=5, UNLOADED=0, we_should_unload=0] [L1772] CALL stub_driver_init() VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=0, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=0, customIrp=0, DC=2, DeviceUsageTypePaging=1, Executive=0, IPC=7, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=0, pirp=-2, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1707] s = NP [L1708] customIrp = 0 [L1709] setEventCalled = customIrp [L1710] lowerDriverReturn = setEventCalled [L1711] compRegistered = lowerDriverReturn [L1712] compFptr = compRegistered [L1713] pended = compFptr VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=0, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=0, customIrp=0, DC=2, DeviceUsageTypePaging=1, Executive=0, IPC=7, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=0, pirp=-2, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1772] RET stub_driver_init() VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=0, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=0, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=0, customIrp=0, d=0, DC=2, DeviceUsageTypePaging=1, devobj=0, Executive=0, IPC=7, irp=-2, irp_choice=0, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=0, pirp=-2, pirp__IoStatus__Status=-1073741637, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, Suspended=5, UNLOADED=0, we_should_unload=0] [L1775] COND FALSE !(status < 0) [L1779] int tmp_ndt_1; [L1780] tmp_ndt_1 = __VERIFIER_nondet_int() [L1781] COND TRUE tmp_ndt_1 == 2 VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=0, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=0, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=0, customIrp=0, d=0, DC=2, DeviceUsageTypePaging=1, devobj=0, Executive=0, IPC=7, irp=-2, irp_choice=0, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=0, pirp=-2, pirp__IoStatus__Status=-1073741637, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, Suspended=5, tmp_ndt_1=2, UNLOADED=0, we_should_unload=0] [L1798] CALL, EXPR CdAudioDeviceControl(devobj, pirp) VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=-2, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=-1073741637, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=0, customIrp=0, DC=2, DeviceUsageTypePaging=1, Executive=0, IPC=7, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=0, pirp=-2, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L313] int deviceExtension__Active = __VERIFIER_nondet_int() ; [L314] int status ; VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=-2, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=-1073741637, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=0, customIrp=0, DC=2, deviceExtension__Active=7, DeviceObject=0, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=-2, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=0, pirp=-2, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L317] COND FALSE !(deviceExtension__Active == 2) VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=-2, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=-1073741637, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=0, customIrp=0, DC=2, deviceExtension__Active=7, DeviceObject=0, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=-2, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=0, pirp=-2, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L320] COND FALSE !(deviceExtension__Active == 3) VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=-2, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=-1073741637, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=0, customIrp=0, DC=2, deviceExtension__Active=7, DeviceObject=0, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=-2, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=0, pirp=-2, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L323] COND FALSE !(deviceExtension__Active == 1) VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=-2, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=-1073741637, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=0, customIrp=0, DC=2, deviceExtension__Active=7, DeviceObject=0, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=-2, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=0, pirp=-2, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L326] COND TRUE deviceExtension__Active == 7 VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=-2, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=-1073741637, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=0, customIrp=0, DC=2, deviceExtension__Active=7, DeviceObject=0, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=-2, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=0, pirp=-2, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L348] CALL, EXPR CdAudioHPCdrDeviceControl(DeviceObject, Irp) VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=-2, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=-1073741637, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=0, customIrp=0, DC=2, DeviceUsageTypePaging=1, Executive=0, IPC=7, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=0, pirp=-2, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1591] int currentIrpStack__Parameters__DeviceIoControl__IoControlCode = __VERIFIER_nondet_int() ; [L1592] int deviceExtension__TargetDeviceObject = __VERIFIER_nondet_int() ; [L1593] int irpSp__Control ; [L1594] int tmp ; [L1595] int tmp___0 ; [L1596] int __cil_tmp8 ; [L1597] int __cil_tmp9 ; [L1598] int __cil_tmp10 ; [L1599] int __cil_tmp11 ; [L1600] int __cil_tmp12 ; [L1604] __cil_tmp8 = 56 [L1605] __cil_tmp9 = 16384 [L1606] __cil_tmp10 = 131072 [L1607] __cil_tmp11 = 147456 [L1608] __cil_tmp12 = 147512 VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=-2, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=-1073741637, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, __cil_tmp10=131072, __cil_tmp11=147456, __cil_tmp12=147512, __cil_tmp8=56, __cil_tmp9=16384, compFptr=0, compRegistered=0, currentIrpStack__Parameters__DeviceIoControl__IoControlCode=147512, customIrp=0, DC=2, deviceExtension__TargetDeviceObject=-3, DeviceObject=0, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=-2, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=0, pirp=-2, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1609] COND TRUE currentIrpStack__Parameters__DeviceIoControl__IoControlCode == __cil_tmp12 VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=-2, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=-1073741637, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, __cil_tmp10=131072, __cil_tmp11=147456, __cil_tmp12=147512, __cil_tmp8=56, __cil_tmp9=16384, compFptr=0, compRegistered=0, currentIrpStack__Parameters__DeviceIoControl__IoControlCode=147512, customIrp=0, DC=2, deviceExtension__TargetDeviceObject=-3, DeviceObject=0, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=-2, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=0, pirp=-2, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1610] COND FALSE !(s != NP) VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=-2, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=-1073741637, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, __cil_tmp10=131072, __cil_tmp11=147456, __cil_tmp12=147512, __cil_tmp8=56, __cil_tmp9=16384, compFptr=0, compRegistered=0, currentIrpStack__Parameters__DeviceIoControl__IoControlCode=147512, customIrp=0, DC=2, deviceExtension__TargetDeviceObject=-3, DeviceObject=0, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=-2, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=0, pirp=-2, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1615] COND FALSE !(compRegistered != 0) [L1620] compRegistered = 1 [L1621] routine = 0 VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=-2, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=-1073741637, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, __cil_tmp10=131072, __cil_tmp11=147456, __cil_tmp12=147512, __cil_tmp8=56, __cil_tmp9=16384, compFptr=0, compRegistered=1, currentIrpStack__Parameters__DeviceIoControl__IoControlCode=147512, customIrp=0, DC=2, deviceExtension__TargetDeviceObject=-3, DeviceObject=0, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=-2, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=0, pirp=-2, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1625] irpSp__Control = 224 VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=-2, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=-1073741637, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, __cil_tmp10=131072, __cil_tmp11=147456, __cil_tmp12=147512, __cil_tmp8=56, __cil_tmp9=16384, compFptr=0, compRegistered=1, currentIrpStack__Parameters__DeviceIoControl__IoControlCode=147512, customIrp=0, DC=2, deviceExtension__TargetDeviceObject=-3, DeviceObject=0, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=-2, irpSp__Control=224, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=0, pirp=-2, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1626] CALL, EXPR IofCallDriver(deviceExtension__TargetDeviceObject, Irp) VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=-3, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=-2, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=-1073741637, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=1, customIrp=0, DC=2, DeviceUsageTypePaging=1, Executive=0, IPC=7, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=0, pirp=-2, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1900] int Irp__PendingReturned = __VERIFIER_nondet_int() ; [L1901] int returnVal2 ; [L1902] int compRetStatus ; [L1903] int lcontext = __VERIFIER_nondet_int() ; [L1904] unsigned long __cil_tmp8 ; VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=-3, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=-2, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=-1073741637, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=1, customIrp=0, DC=2, DeviceObject=-3, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=-2, Irp__PendingReturned=0, KernelMode=0, lcontext=4, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=0, pirp=-2, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1907] COND TRUE \read(compRegistered) VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=-3, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=-2, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=-1073741637, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=1, customIrp=0, DC=2, DeviceObject=-3, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=-2, Irp__PendingReturned=0, KernelMode=0, lcontext=4, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=0, pirp=-2, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1908] COND TRUE routine == 0 VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=-3, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=-2, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=-1073741637, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=1, customIrp=0, DC=2, DeviceObject=-3, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=-2, Irp__PendingReturned=0, KernelMode=0, lcontext=4, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=0, pirp=-2, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1910] CALL, EXPR HPCdrCompletion(DeviceObject, Irp, lcontext) VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(Context)=4, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=-3, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=-2, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=-1073741637, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=1, customIrp=0, DC=2, DeviceUsageTypePaging=1, Executive=0, IPC=7, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=0, pirp=-2, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1569] int Irp__PendingReturned = __VERIFIER_nondet_int() ; [L1570] int Irp__AssociatedIrp__SystemBuffer = __VERIFIER_nondet_int() ; [L1573] COND TRUE \read(Irp__PendingReturned) VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(Context)=4, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=-3, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=-2, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=-1073741637, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=1, Context=4, customIrp=0, DC=2, DeviceObject=-3, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=-2, Irp__AssociatedIrp__SystemBuffer=0, Irp__PendingReturned=-4, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=0, pirp=-2, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1574] COND TRUE pended == 0 [L1575] pended = 1 VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(Context)=4, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=-3, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=-2, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=-1073741637, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=1, Context=4, customIrp=0, DC=2, DeviceObject=-3, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=-2, Irp__AssociatedIrp__SystemBuffer=0, Irp__PendingReturned=-4, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=1, pirp=-2, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1582] COND FALSE !(myStatus >= 0) VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(Context)=4, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=-3, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=-2, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=-1073741637, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=1, Context=4, customIrp=0, DC=2, DeviceObject=-3, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=-2, Irp__AssociatedIrp__SystemBuffer=0, Irp__PendingReturned=-4, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=1, pirp=-2, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1587] return (myStatus); VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(Context)=4, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=-3, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=-2, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=-1073741637, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, \result=-1073741637, compFptr=0, compRegistered=1, Context=4, customIrp=0, DC=2, DeviceObject=-3, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=-2, Irp__AssociatedIrp__SystemBuffer=0, Irp__PendingReturned=-4, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=1, pirp=-2, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1910] RET, EXPR HPCdrCompletion(DeviceObject, Irp, lcontext) VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=-3, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=-2, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=-1073741637, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=1, customIrp=0, DC=2, DeviceObject=-3, DeviceUsageTypePaging=1, Executive=0, HPCdrCompletion(DeviceObject, Irp, lcontext)=-1073741637, IPC=7, Irp=-2, Irp__PendingReturned=0, KernelMode=0, lcontext=4, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=1, pirp=-2, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1910] compRetStatus = HPCdrCompletion(DeviceObject, Irp, lcontext) [L1920] __cil_tmp8 = (unsigned long )compRetStatus VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=-3, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=-2, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=-1073741637, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, __cil_tmp8=18446744072635809979, compFptr=0, compRegistered=1, compRetStatus=-1073741637, customIrp=0, DC=2, DeviceObject=-3, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=-2, Irp__PendingReturned=0, KernelMode=0, lcontext=4, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=1, pirp=-2, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1921] COND FALSE !(__cil_tmp8 == -1073741802) VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=-3, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=-2, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=-1073741637, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, __cil_tmp8=18446744072635809979, compFptr=0, compRegistered=1, compRetStatus=-1073741637, customIrp=0, DC=2, DeviceObject=-3, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=-2, Irp__PendingReturned=0, KernelMode=0, lcontext=4, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=1, pirp=-2, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1928] COND FALSE !(\read(Irp__PendingReturned)) [L1931] int tmp_ndt_4; [L1932] tmp_ndt_4 = __VERIFIER_nondet_int() [L1933] COND TRUE tmp_ndt_4 == 0 VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=-3, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=-2, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=-1073741637, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, __cil_tmp8=18446744072635809979, compFptr=0, compRegistered=1, compRetStatus=-1073741637, customIrp=0, DC=2, DeviceObject=-3, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=-2, Irp__PendingReturned=0, KernelMode=0, lcontext=4, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=1, pirp=-2, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, tmp_ndt_4=0, UNLOADED=0] [L1944] returnVal2 = 0 VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=-3, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=-2, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=-1073741637, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, __cil_tmp8=18446744072635809979, compFptr=0, compRegistered=1, compRetStatus=-1073741637, customIrp=0, DC=2, DeviceObject=-3, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=-2, Irp__PendingReturned=0, KernelMode=0, lcontext=4, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=1, pirp=-2, returnVal2=0, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, tmp_ndt_4=0, UNLOADED=0] [L1958] COND TRUE s == NP [L1959] s = IPC [L1960] lowerDriverReturn = returnVal2 VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=-3, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=-2, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=-1073741637, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, __cil_tmp8=18446744072635809979, compFptr=0, compRegistered=1, compRetStatus=-1073741637, customIrp=0, DC=2, DeviceObject=-3, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=-2, Irp__PendingReturned=0, KernelMode=0, lcontext=4, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=1, pirp=-2, returnVal2=0, routine=0, s=7, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, tmp_ndt_4=0, UNLOADED=0] [L1981] return (returnVal2); VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=-3, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=-2, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=-1073741637, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, \result=0, __cil_tmp8=18446744072635809979, compFptr=0, compRegistered=1, compRetStatus=-1073741637, customIrp=0, DC=2, DeviceObject=-3, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=-2, Irp__PendingReturned=0, KernelMode=0, lcontext=4, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=1, pirp=-2, returnVal2=0, routine=0, s=7, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, tmp_ndt_4=0, UNLOADED=0] [L1626] RET, EXPR IofCallDriver(deviceExtension__TargetDeviceObject, Irp) VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=-2, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=-1073741637, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, __cil_tmp10=131072, __cil_tmp11=147456, __cil_tmp12=147512, __cil_tmp8=56, __cil_tmp9=16384, compFptr=0, compRegistered=1, currentIrpStack__Parameters__DeviceIoControl__IoControlCode=147512, customIrp=0, DC=2, deviceExtension__TargetDeviceObject=-3, DeviceObject=0, DeviceUsageTypePaging=1, Executive=0, IofCallDriver(deviceExtension__TargetDeviceObject, Irp)=0, IPC=7, Irp=-2, irpSp__Control=224, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=1, pirp=-2, routine=0, s=7, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1626] tmp = IofCallDriver(deviceExtension__TargetDeviceObject, Irp) [L1628] return (tmp); VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=-2, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=-1073741637, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, \result=0, __cil_tmp10=131072, __cil_tmp11=147456, __cil_tmp12=147512, __cil_tmp8=56, __cil_tmp9=16384, compFptr=0, compRegistered=1, currentIrpStack__Parameters__DeviceIoControl__IoControlCode=147512, customIrp=0, DC=2, deviceExtension__TargetDeviceObject=-3, DeviceObject=0, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=-2, irpSp__Control=224, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=1, pirp=-2, routine=0, s=7, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, tmp=0, UNLOADED=0] [L348] RET, EXPR CdAudioHPCdrDeviceControl(DeviceObject, Irp) VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=-2, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=-1073741637, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, CdAudioHPCdrDeviceControl(DeviceObject, Irp)=0, compFptr=0, compRegistered=1, customIrp=0, DC=2, deviceExtension__Active=7, DeviceObject=0, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=-2, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=1, pirp=-2, routine=0, s=7, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L348] status = CdAudioHPCdrDeviceControl(DeviceObject, Irp) [L363] return (status); VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=-2, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=-1073741637, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, \result=0, compFptr=0, compRegistered=1, customIrp=0, DC=2, deviceExtension__Active=7, DeviceObject=0, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=-2, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=1, pirp=-2, routine=0, s=7, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, Suspended=5, UNLOADED=0] [L1798] RET, EXPR CdAudioDeviceControl(devobj, pirp) VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=0, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=0, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, CdAudioDeviceControl(devobj, pirp)=0, compFptr=0, compRegistered=1, customIrp=0, d=0, DC=2, DeviceUsageTypePaging=1, devobj=0, Executive=0, IPC=7, irp=-2, irp_choice=0, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=1, pirp=-2, pirp__IoStatus__Status=-1073741637, routine=0, s=7, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, Suspended=5, tmp_ndt_1=2, UNLOADED=0, we_should_unload=0] [L1798] status = CdAudioDeviceControl(devobj, pirp) [L1819] COND FALSE !(\read(we_should_unload)) VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=0, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=0, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=1, customIrp=0, d=0, DC=2, DeviceUsageTypePaging=1, devobj=0, Executive=0, IPC=7, irp=-2, irp_choice=0, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=1, pirp=-2, pirp__IoStatus__Status=-1073741637, routine=0, s=7, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, Suspended=5, tmp_ndt_1=2, UNLOADED=0, we_should_unload=0] [L1825] COND TRUE pended == 1 VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=0, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=0, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=1, customIrp=0, d=0, DC=2, DeviceUsageTypePaging=1, devobj=0, Executive=0, IPC=7, irp=-2, irp_choice=0, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=1, pirp=-2, pirp__IoStatus__Status=-1073741637, routine=0, s=7, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, Suspended=5, tmp_ndt_1=2, UNLOADED=0, we_should_unload=0] [L1826] COND FALSE !(s == NP) VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=0, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=0, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=1, customIrp=0, d=0, DC=2, DeviceUsageTypePaging=1, devobj=0, Executive=0, IPC=7, irp=-2, irp_choice=0, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=1, pirp=-2, pirp__IoStatus__Status=-1073741637, routine=0, s=7, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, Suspended=5, tmp_ndt_1=2, UNLOADED=0, we_should_unload=0] [L1833] COND TRUE pended == 1 VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=0, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=0, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=1, customIrp=0, d=0, DC=2, DeviceUsageTypePaging=1, devobj=0, Executive=0, IPC=7, irp=-2, irp_choice=0, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=1, pirp=-2, pirp__IoStatus__Status=-1073741637, routine=0, s=7, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, Suspended=5, tmp_ndt_1=2, UNLOADED=0, we_should_unload=0] [L1834] COND FALSE !(s == MPR3) VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=0, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=0, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=1, customIrp=0, d=0, DC=2, DeviceUsageTypePaging=1, devobj=0, Executive=0, IPC=7, irp=-2, irp_choice=0, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=1, pirp=-2, pirp__IoStatus__Status=-1073741637, routine=0, s=7, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, Suspended=5, tmp_ndt_1=2, UNLOADED=0, we_should_unload=0] [L1841] COND TRUE s != UNLOADED VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=0, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=0, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=1, customIrp=0, d=0, DC=2, DeviceUsageTypePaging=1, devobj=0, Executive=0, IPC=7, irp=-2, irp_choice=0, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=1, pirp=-2, pirp__IoStatus__Status=-1073741637, routine=0, s=7, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, Suspended=5, tmp_ndt_1=2, UNLOADED=0, we_should_unload=0] [L1842] COND TRUE status != -1 VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=0, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=0, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=1, customIrp=0, d=0, DC=2, DeviceUsageTypePaging=1, devobj=0, Executive=0, IPC=7, irp=-2, irp_choice=0, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=1, pirp=-2, pirp__IoStatus__Status=-1073741637, routine=0, s=7, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, Suspended=5, tmp_ndt_1=2, UNLOADED=0, we_should_unload=0] [L1843] COND TRUE s != SKIP2 VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=0, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=0, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=1, customIrp=0, d=0, DC=2, DeviceUsageTypePaging=1, devobj=0, Executive=0, IPC=7, irp=-2, irp_choice=0, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=1, pirp=-2, pirp__IoStatus__Status=-1073741637, routine=0, s=7, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, Suspended=5, tmp_ndt_1=2, UNLOADED=0, we_should_unload=0] [L1844] COND FALSE !(s != IPC) VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=0, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=0, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=1, customIrp=0, d=0, DC=2, DeviceUsageTypePaging=1, devobj=0, Executive=0, IPC=7, irp=-2, irp_choice=0, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=1, pirp=-2, pirp__IoStatus__Status=-1073741637, routine=0, s=7, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, Suspended=5, tmp_ndt_1=2, UNLOADED=0, we_should_unload=0] [L1857] COND FALSE !(pended != 1) VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=0, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=0, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=1, customIrp=0, d=0, DC=2, DeviceUsageTypePaging=1, devobj=0, Executive=0, IPC=7, irp=-2, irp_choice=0, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=1, pirp=-2, pirp__IoStatus__Status=-1073741637, routine=0, s=7, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, Suspended=5, tmp_ndt_1=2, UNLOADED=0, we_should_unload=0] [L1869] COND TRUE status != 259 VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=0, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=0, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=1, customIrp=0, d=0, DC=2, DeviceUsageTypePaging=1, devobj=0, Executive=0, IPC=7, irp=-2, irp_choice=0, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=1, pirp=-2, pirp__IoStatus__Status=-1073741637, routine=0, s=7, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, Suspended=5, tmp_ndt_1=2, UNLOADED=0, we_should_unload=0] [L1871] CALL errorFn() VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=0, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=0, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=1, customIrp=0, DC=2, DeviceUsageTypePaging=1, Executive=0, IPC=7, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=1, pirp=-2, routine=0, s=7, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L59] reach_error() VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=0, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=0, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=1, customIrp=0, DC=2, DeviceUsageTypePaging=1, Executive=0, IPC=7, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=1, pirp=-2, routine=0, s=7, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 30 procedures, 517 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 125.4s, OverallIterations: 67, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 108.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 69239 SdHoareTripleChecker+Valid, 93.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 68819 mSDsluCounter, 116906 SdHoareTripleChecker+Invalid, 79.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 78302 mSDsCounter, 24006 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 193602 IncrementalHoareTripleChecker+Invalid, 217608 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 24006 mSolverCounterUnsat, 38604 mSDtfsCounter, 193602 mSolverCounterSat, 0.8s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1741 GetRequests, 647 SyntacticMatches, 14 SemanticMatches, 1080 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2730 ImplicationChecksByTransitivity, 13.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=978occurred in iteration=62, InterpolantAutomatonStates: 890, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 4.6s AutomataMinimizationTime, 66 MinimizatonAttempts, 8532 StatesRemovedByMinimization, 66 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 10.9s InterpolantComputationTime, 3941 NumberOfCodeBlocks, 3941 NumberOfCodeBlocksAsserted, 67 NumberOfCheckSat, 3802 ConstructedInterpolants, 0 QuantifiedInterpolants, 20031 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 66 InterpolantComputations, 66 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2022-03-17 23:16:55,170 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...