/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCTransformed.xml -s ../../../trunk/examples/settings/loopacceleration/qvasr/qvasr_64.epf -i ../../../trunk/examples/svcomp/ntdrivers-simplified/cdaudio_simpl1.cil-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-b030c9e [2022-03-20 12:03:50,434 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-20 12:03:50,436 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-20 12:03:50,484 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-03-20 12:03:50,485 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-03-20 12:03:50,486 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-03-20 12:03:50,489 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-03-20 12:03:50,492 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-03-20 12:03:50,493 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-03-20 12:03:50,498 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-03-20 12:03:50,499 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-03-20 12:03:50,500 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-03-20 12:03:50,501 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-03-20 12:03:50,503 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-03-20 12:03:50,504 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-03-20 12:03:50,507 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-03-20 12:03:50,507 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-03-20 12:03:50,508 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-03-20 12:03:50,510 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-03-20 12:03:50,515 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-03-20 12:03:50,517 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-03-20 12:03:50,518 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-03-20 12:03:50,519 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-03-20 12:03:50,519 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-03-20 12:03:50,521 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-03-20 12:03:50,527 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-03-20 12:03:50,527 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-03-20 12:03:50,527 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-03-20 12:03:50,528 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-03-20 12:03:50,529 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-03-20 12:03:50,530 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-03-20 12:03:50,530 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-03-20 12:03:50,532 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-03-20 12:03:50,532 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-03-20 12:03:50,533 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-03-20 12:03:50,533 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-03-20 12:03:50,533 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-03-20 12:03:50,534 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-03-20 12:03:50,534 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-03-20 12:03:50,534 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-20 12:03:50,535 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-20 12:03:50,536 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-20 12:03:50,537 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/loopacceleration/qvasr/qvasr_64.epf [2022-03-20 12:03:50,564 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-20 12:03:50,564 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-20 12:03:50,565 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-03-20 12:03:50,565 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-03-20 12:03:50,566 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-03-20 12:03:50,566 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-03-20 12:03:50,566 INFO L138 SettingsManager]: * Use SBE=true [2022-03-20 12:03:50,566 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-20 12:03:50,567 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-20 12:03:50,567 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-20 12:03:50,567 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-20 12:03:50,567 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-20 12:03:50,568 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-20 12:03:50,568 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-20 12:03:50,568 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-20 12:03:50,568 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-20 12:03:50,568 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-20 12:03:50,568 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-20 12:03:50,568 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-20 12:03:50,568 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-20 12:03:50,568 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-20 12:03:50,569 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-03-20 12:03:50,569 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-03-20 12:03:50,569 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-20 12:03:50,569 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-03-20 12:03:50,569 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-20 12:03:50,569 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-03-20 12:03:50,570 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-03-20 12:03:50,571 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-03-20 12:03:50,571 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-03-20 12:03:50,822 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-20 12:03:50,853 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-20 12:03:50,855 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-20 12:03:50,856 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-20 12:03:50,856 INFO L275 PluginConnector]: CDTParser initialized [2022-03-20 12:03:50,857 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ntdrivers-simplified/cdaudio_simpl1.cil-2.c [2022-03-20 12:03:50,925 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/18e993283/f4a57cbfd89644d781b82bae11d6c8ae/FLAG400af5a83 [2022-03-20 12:03:51,446 INFO L306 CDTParser]: Found 1 translation units. [2022-03-20 12:03:51,447 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ntdrivers-simplified/cdaudio_simpl1.cil-2.c [2022-03-20 12:03:51,499 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/18e993283/f4a57cbfd89644d781b82bae11d6c8ae/FLAG400af5a83 [2022-03-20 12:03:51,776 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/18e993283/f4a57cbfd89644d781b82bae11d6c8ae [2022-03-20 12:03:51,778 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-20 12:03:51,780 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-03-20 12:03:51,781 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-20 12:03:51,781 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-20 12:03:51,785 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-20 12:03:51,786 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.03 12:03:51" (1/1) ... [2022-03-20 12:03:51,787 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e85ced6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 12:03:51, skipping insertion in model container [2022-03-20 12:03:51,787 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.03 12:03:51" (1/1) ... [2022-03-20 12:03:51,794 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-20 12:03:51,858 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-20 12:03:52,107 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ntdrivers-simplified/cdaudio_simpl1.cil-2.c[2073,2086] [2022-03-20 12:03:52,252 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-20 12:03:52,260 INFO L203 MainTranslator]: Completed pre-run [2022-03-20 12:03:52,273 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ntdrivers-simplified/cdaudio_simpl1.cil-2.c[2073,2086] [2022-03-20 12:03:52,353 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-20 12:03:52,370 INFO L208 MainTranslator]: Completed translation [2022-03-20 12:03:52,371 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 12:03:52 WrapperNode [2022-03-20 12:03:52,371 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-20 12:03:52,372 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-20 12:03:52,372 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-20 12:03:52,372 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-20 12:03:52,389 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 12:03:52" (1/1) ... [2022-03-20 12:03:52,389 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 12:03:52" (1/1) ... [2022-03-20 12:03:52,407 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 12:03:52" (1/1) ... [2022-03-20 12:03:52,407 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 12:03:52" (1/1) ... [2022-03-20 12:03:52,437 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 12:03:52" (1/1) ... [2022-03-20 12:03:52,453 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 12:03:52" (1/1) ... [2022-03-20 12:03:52,459 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 12:03:52" (1/1) ... [2022-03-20 12:03:52,468 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-20 12:03:52,469 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-20 12:03:52,469 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-20 12:03:52,469 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-20 12:03:52,470 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 12:03:52" (1/1) ... [2022-03-20 12:03:52,476 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-20 12:03:52,486 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 12:03:52,514 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-03-20 12:03:52,548 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-03-20 12:03:52,560 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-03-20 12:03:52,561 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-20 12:03:52,561 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-03-20 12:03:52,561 INFO L138 BoogieDeclarations]: Found implementation of procedure errorFn [2022-03-20 12:03:52,561 INFO L138 BoogieDeclarations]: Found implementation of procedure _BLAST_init [2022-03-20 12:03:52,561 INFO L138 BoogieDeclarations]: Found implementation of procedure SendSrbSynchronous [2022-03-20 12:03:52,561 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioSignalCompletion [2022-03-20 12:03:52,561 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioStartDevice [2022-03-20 12:03:52,561 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioPnp [2022-03-20 12:03:52,562 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioDeviceControl [2022-03-20 12:03:52,562 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioSendToNextDriver [2022-03-20 12:03:52,562 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioIsPlayActive [2022-03-20 12:03:52,562 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudio535DeviceControl [2022-03-20 12:03:52,562 INFO L138 BoogieDeclarations]: Found implementation of procedure AG_SetStatusAndReturn [2022-03-20 12:03:52,562 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudio435DeviceControl [2022-03-20 12:03:52,562 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioAtapiDeviceControl [2022-03-20 12:03:52,562 INFO L138 BoogieDeclarations]: Found implementation of procedure HpCdrProcessLastSession [2022-03-20 12:03:52,562 INFO L138 BoogieDeclarations]: Found implementation of procedure HPCdrCompletion [2022-03-20 12:03:52,563 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioHPCdrDeviceControl [2022-03-20 12:03:52,563 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioForwardIrpSynchronous [2022-03-20 12:03:52,563 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioUnload [2022-03-20 12:03:52,563 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioPower [2022-03-20 12:03:52,563 INFO L138 BoogieDeclarations]: Found implementation of procedure stub_driver_init [2022-03-20 12:03:52,563 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-03-20 12:03:52,563 INFO L138 BoogieDeclarations]: Found implementation of procedure stubMoreProcessingRequired [2022-03-20 12:03:52,563 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCallDriver [2022-03-20 12:03:52,564 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCompleteRequest [2022-03-20 12:03:52,564 INFO L138 BoogieDeclarations]: Found implementation of procedure KeSetEvent [2022-03-20 12:03:52,564 INFO L138 BoogieDeclarations]: Found implementation of procedure KeWaitForSingleObject [2022-03-20 12:03:52,564 INFO L138 BoogieDeclarations]: Found implementation of procedure PoCallDriver [2022-03-20 12:03:52,564 INFO L138 BoogieDeclarations]: Found implementation of procedure ZwClose [2022-03-20 12:03:52,564 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-03-20 12:03:52,564 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-03-20 12:03:52,564 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-03-20 12:03:52,564 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-20 12:03:52,564 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2022-03-20 12:03:52,564 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-03-20 12:03:52,565 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2022-03-20 12:03:52,565 INFO L130 BoogieDeclarations]: Found specification of procedure SendSrbSynchronous [2022-03-20 12:03:52,565 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioSignalCompletion [2022-03-20 12:03:52,565 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioStartDevice [2022-03-20 12:03:52,565 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioPnp [2022-03-20 12:03:52,565 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioDeviceControl [2022-03-20 12:03:52,565 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioSendToNextDriver [2022-03-20 12:03:52,565 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioIsPlayActive [2022-03-20 12:03:52,565 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudio535DeviceControl [2022-03-20 12:03:52,565 INFO L130 BoogieDeclarations]: Found specification of procedure AG_SetStatusAndReturn [2022-03-20 12:03:52,565 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudio435DeviceControl [2022-03-20 12:03:52,566 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioAtapiDeviceControl [2022-03-20 12:03:52,566 INFO L130 BoogieDeclarations]: Found specification of procedure HPCdrCompletion [2022-03-20 12:03:52,566 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioHPCdrDeviceControl [2022-03-20 12:03:52,566 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioForwardIrpSynchronous [2022-03-20 12:03:52,566 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioPower [2022-03-20 12:03:52,566 INFO L130 BoogieDeclarations]: Found specification of procedure IofCallDriver [2022-03-20 12:03:52,566 INFO L130 BoogieDeclarations]: Found specification of procedure KeSetEvent [2022-03-20 12:03:52,566 INFO L130 BoogieDeclarations]: Found specification of procedure KeWaitForSingleObject [2022-03-20 12:03:52,566 INFO L130 BoogieDeclarations]: Found specification of procedure PoCallDriver [2022-03-20 12:03:52,567 INFO L130 BoogieDeclarations]: Found specification of procedure ZwClose [2022-03-20 12:03:52,567 INFO L130 BoogieDeclarations]: Found specification of procedure IofCompleteRequest [2022-03-20 12:03:52,567 INFO L130 BoogieDeclarations]: Found specification of procedure errorFn [2022-03-20 12:03:52,567 INFO L130 BoogieDeclarations]: Found specification of procedure _BLAST_init [2022-03-20 12:03:52,567 INFO L130 BoogieDeclarations]: Found specification of procedure HpCdrProcessLastSession [2022-03-20 12:03:52,567 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioUnload [2022-03-20 12:03:52,567 INFO L130 BoogieDeclarations]: Found specification of procedure stub_driver_init [2022-03-20 12:03:52,567 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-03-20 12:03:52,567 INFO L130 BoogieDeclarations]: Found specification of procedure stubMoreProcessingRequired [2022-03-20 12:03:52,568 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-03-20 12:03:52,568 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-20 12:03:52,568 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-20 12:03:52,568 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-20 12:03:52,568 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-20 12:03:52,568 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-20 12:03:52,764 INFO L234 CfgBuilder]: Building ICFG [2022-03-20 12:03:52,767 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-20 12:03:52,932 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-20 12:03:53,003 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume !false; [2022-03-20 12:03:53,003 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##14: assume false; [2022-03-20 12:03:53,013 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-20 12:03:53,047 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##18: assume !false; [2022-03-20 12:03:53,048 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##17: assume false; [2022-03-20 12:03:53,066 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-20 12:03:53,077 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##16: assume !false; [2022-03-20 12:03:53,077 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume false; [2022-03-20 12:03:53,124 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-20 12:03:53,158 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##6: assume !false; [2022-03-20 12:03:53,159 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L305: #res := 0; [2022-03-20 12:03:53,159 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##5: assume false; [2022-03-20 12:03:53,166 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-20 12:03:53,320 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##21: assume false; [2022-03-20 12:03:53,320 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##22: assume !false; [2022-03-20 12:03:53,321 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-20 12:03:53,345 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##21: assume !false; [2022-03-20 12:03:53,346 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##20: assume false; [2022-03-20 12:03:53,372 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-20 12:03:53,415 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##10: assume !false; [2022-03-20 12:03:53,416 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##9: assume false; [2022-03-20 12:03:53,419 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-20 12:03:53,557 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##26: assume !false; [2022-03-20 12:03:53,557 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##25: assume false; [2022-03-20 12:03:53,567 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-20 12:03:53,571 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-20 12:03:53,571 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-20 12:03:53,620 INFO L275 CfgBuilder]: Performing block encoding [2022-03-20 12:03:53,632 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-20 12:03:53,633 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-03-20 12:03:53,635 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.03 12:03:53 BoogieIcfgContainer [2022-03-20 12:03:53,635 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-20 12:03:53,636 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-03-20 12:03:53,636 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-03-20 12:03:53,637 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-03-20 12:03:53,640 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.03 12:03:53" (1/1) ... [2022-03-20 12:03:53,642 INFO L168 ansformationObserver]: Applying ICFG transformation LOOP_ACCELERATION_QVASR [2022-03-20 12:03:53,684 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 20.03 12:03:53 BasicIcfg [2022-03-20 12:03:53,684 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-03-20 12:03:53,687 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-20 12:03:53,687 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-20 12:03:53,690 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-20 12:03:53,690 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.03 12:03:51" (1/4) ... [2022-03-20 12:03:53,691 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8a438fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.03 12:03:53, skipping insertion in model container [2022-03-20 12:03:53,691 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 12:03:52" (2/4) ... [2022-03-20 12:03:53,691 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8a438fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.03 12:03:53, skipping insertion in model container [2022-03-20 12:03:53,692 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.03 12:03:53" (3/4) ... [2022-03-20 12:03:53,692 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8a438fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.03 12:03:53, skipping insertion in model container [2022-03-20 12:03:53,692 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 20.03 12:03:53" (4/4) ... [2022-03-20 12:03:53,693 INFO L111 eAbstractionObserver]: Analyzing ICFG cdaudio_simpl1.cil-2.cqvasr [2022-03-20 12:03:53,699 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-03-20 12:03:53,699 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-20 12:03:53,742 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-20 12:03:53,748 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 [2022-03-20 12:03:53,749 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-03-20 12:03:53,791 INFO L276 IsEmpty]: Start isEmpty. Operand has 515 states, 382 states have (on average 1.486910994764398) internal successors, (568), 402 states have internal predecessors, (568), 102 states have call successors, (102), 29 states have call predecessors, (102), 29 states have return successors, (102), 98 states have call predecessors, (102), 102 states have call successors, (102) [2022-03-20 12:03:53,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-20 12:03:53,798 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 12:03:53,799 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 12:03:53,802 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 12:03:53,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 12:03:53,811 INFO L85 PathProgramCache]: Analyzing trace with hash -1376594176, now seen corresponding path program 1 times [2022-03-20 12:03:53,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 12:03:53,821 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963040029] [2022-03-20 12:03:53,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 12:03:53,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 12:03:53,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:03:54,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 12:03:54,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:03:54,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 12:03:54,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:03:54,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 12:03:54,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 12:03:54,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963040029] [2022-03-20 12:03:54,271 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [963040029] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 12:03:54,271 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 12:03:54,271 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-20 12:03:54,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009471187] [2022-03-20 12:03:54,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 12:03:54,278 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-20 12:03:54,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 12:03:54,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-20 12:03:54,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-03-20 12:03:54,310 INFO L87 Difference]: Start difference. First operand has 515 states, 382 states have (on average 1.486910994764398) internal successors, (568), 402 states have internal predecessors, (568), 102 states have call successors, (102), 29 states have call predecessors, (102), 29 states have return successors, (102), 98 states have call predecessors, (102), 102 states have call successors, (102) Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 3 states have internal predecessors, (14), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-03-20 12:03:56,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 12:03:56,221 INFO L93 Difference]: Finished difference Result 1043 states and 1675 transitions. [2022-03-20 12:03:56,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-20 12:03:56,223 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 3 states have internal predecessors, (14), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 20 [2022-03-20 12:03:56,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 12:03:56,234 INFO L225 Difference]: With dead ends: 1043 [2022-03-20 12:03:56,235 INFO L226 Difference]: Without dead ends: 663 [2022-03-20 12:03:56,240 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-03-20 12:03:56,243 INFO L913 BasicCegarLoop]: 738 mSDtfsCounter, 770 mSDsluCounter, 265 mSDsCounter, 0 mSdLazyCounter, 1132 mSolverCounterSat, 308 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 771 SdHoareTripleChecker+Valid, 1003 SdHoareTripleChecker+Invalid, 1440 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 308 IncrementalHoareTripleChecker+Valid, 1132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-03-20 12:03:56,243 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [771 Valid, 1003 Invalid, 1440 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [308 Valid, 1132 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-03-20 12:03:56,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 663 states. [2022-03-20 12:03:56,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 663 to 507. [2022-03-20 12:03:56,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 507 states, 377 states have (on average 1.4562334217506632) internal successors, (549), 395 states have internal predecessors, (549), 102 states have call successors, (102), 29 states have call predecessors, (102), 27 states have return successors, (86), 86 states have call predecessors, (86), 86 states have call successors, (86) [2022-03-20 12:03:56,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 507 states to 507 states and 737 transitions. [2022-03-20 12:03:56,316 INFO L78 Accepts]: Start accepts. Automaton has 507 states and 737 transitions. Word has length 20 [2022-03-20 12:03:56,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 12:03:56,317 INFO L478 AbstractCegarLoop]: Abstraction has 507 states and 737 transitions. [2022-03-20 12:03:56,317 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 3 states have internal predecessors, (14), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-03-20 12:03:56,317 INFO L276 IsEmpty]: Start isEmpty. Operand 507 states and 737 transitions. [2022-03-20 12:03:56,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-03-20 12:03:56,318 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 12:03:56,318 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 12:03:56,318 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-20 12:03:56,318 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 12:03:56,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 12:03:56,319 INFO L85 PathProgramCache]: Analyzing trace with hash 752029052, now seen corresponding path program 1 times [2022-03-20 12:03:56,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 12:03:56,319 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982701889] [2022-03-20 12:03:56,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 12:03:56,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 12:03:56,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:03:56,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 12:03:56,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:03:56,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 12:03:56,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:03:56,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 12:03:56,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:03:56,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 12:03:56,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 12:03:56,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982701889] [2022-03-20 12:03:56,463 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [982701889] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 12:03:56,463 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 12:03:56,463 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-20 12:03:56,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730899308] [2022-03-20 12:03:56,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 12:03:56,464 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-20 12:03:56,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 12:03:56,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-20 12:03:56,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-03-20 12:03:56,465 INFO L87 Difference]: Start difference. First operand 507 states and 737 transitions. Second operand has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 3 states have internal predecessors, (16), 3 states have call successors, (6), 6 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-03-20 12:03:57,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 12:03:57,925 INFO L93 Difference]: Finished difference Result 961 states and 1420 transitions. [2022-03-20 12:03:57,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-20 12:03:57,926 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 3 states have internal predecessors, (16), 3 states have call successors, (6), 6 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 25 [2022-03-20 12:03:57,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 12:03:57,932 INFO L225 Difference]: With dead ends: 961 [2022-03-20 12:03:57,932 INFO L226 Difference]: Without dead ends: 842 [2022-03-20 12:03:57,933 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-03-20 12:03:57,934 INFO L913 BasicCegarLoop]: 845 mSDtfsCounter, 1495 mSDsluCounter, 167 mSDsCounter, 0 mSdLazyCounter, 925 mSolverCounterSat, 428 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1499 SdHoareTripleChecker+Valid, 1012 SdHoareTripleChecker+Invalid, 1353 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 428 IncrementalHoareTripleChecker+Valid, 925 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-03-20 12:03:57,934 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1499 Valid, 1012 Invalid, 1353 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [428 Valid, 925 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-03-20 12:03:57,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 842 states. [2022-03-20 12:03:57,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 842 to 662. [2022-03-20 12:03:57,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 662 states, 501 states have (on average 1.407185628742515) internal successors, (705), 508 states have internal predecessors, (705), 111 states have call successors, (111), 40 states have call predecessors, (111), 49 states have return successors, (145), 119 states have call predecessors, (145), 99 states have call successors, (145) [2022-03-20 12:03:57,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 662 states to 662 states and 961 transitions. [2022-03-20 12:03:57,987 INFO L78 Accepts]: Start accepts. Automaton has 662 states and 961 transitions. Word has length 25 [2022-03-20 12:03:57,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 12:03:57,987 INFO L478 AbstractCegarLoop]: Abstraction has 662 states and 961 transitions. [2022-03-20 12:03:57,987 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 3 states have internal predecessors, (16), 3 states have call successors, (6), 6 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-03-20 12:03:57,988 INFO L276 IsEmpty]: Start isEmpty. Operand 662 states and 961 transitions. [2022-03-20 12:03:57,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-03-20 12:03:57,989 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 12:03:57,989 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 12:03:57,989 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-03-20 12:03:57,989 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 12:03:57,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 12:03:57,990 INFO L85 PathProgramCache]: Analyzing trace with hash -2092358377, now seen corresponding path program 1 times [2022-03-20 12:03:57,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 12:03:57,990 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657417942] [2022-03-20 12:03:57,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 12:03:57,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 12:03:58,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:03:58,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 12:03:58,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:03:58,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 12:03:58,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:03:58,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 12:03:58,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:03:58,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 12:03:58,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 12:03:58,119 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657417942] [2022-03-20 12:03:58,120 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1657417942] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 12:03:58,120 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 12:03:58,120 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-20 12:03:58,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044242594] [2022-03-20 12:03:58,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 12:03:58,120 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-20 12:03:58,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 12:03:58,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-20 12:03:58,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-03-20 12:03:58,121 INFO L87 Difference]: Start difference. First operand 662 states and 961 transitions. Second operand has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 3 states have internal predecessors, (19), 3 states have call successors, (8), 6 states have call predecessors, (8), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-03-20 12:03:59,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 12:03:59,473 INFO L93 Difference]: Finished difference Result 1142 states and 1641 transitions. [2022-03-20 12:03:59,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-20 12:03:59,474 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 3 states have internal predecessors, (19), 3 states have call successors, (8), 6 states have call predecessors, (8), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 30 [2022-03-20 12:03:59,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 12:03:59,478 INFO L225 Difference]: With dead ends: 1142 [2022-03-20 12:03:59,478 INFO L226 Difference]: Without dead ends: 966 [2022-03-20 12:03:59,479 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-03-20 12:03:59,480 INFO L913 BasicCegarLoop]: 722 mSDtfsCounter, 1919 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 703 mSolverCounterSat, 543 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1929 SdHoareTripleChecker+Valid, 860 SdHoareTripleChecker+Invalid, 1246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 543 IncrementalHoareTripleChecker+Valid, 703 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-03-20 12:03:59,480 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1929 Valid, 860 Invalid, 1246 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [543 Valid, 703 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-03-20 12:03:59,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 966 states. [2022-03-20 12:03:59,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 966 to 787. [2022-03-20 12:03:59,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 787 states, 610 states have (on average 1.4032786885245903) internal successors, (856), 613 states have internal predecessors, (856), 113 states have call successors, (113), 46 states have call predecessors, (113), 63 states have return successors, (163), 130 states have call predecessors, (163), 104 states have call successors, (163) [2022-03-20 12:03:59,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 787 states to 787 states and 1132 transitions. [2022-03-20 12:03:59,521 INFO L78 Accepts]: Start accepts. Automaton has 787 states and 1132 transitions. Word has length 30 [2022-03-20 12:03:59,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 12:03:59,521 INFO L478 AbstractCegarLoop]: Abstraction has 787 states and 1132 transitions. [2022-03-20 12:03:59,521 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 3 states have internal predecessors, (19), 3 states have call successors, (8), 6 states have call predecessors, (8), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-03-20 12:03:59,521 INFO L276 IsEmpty]: Start isEmpty. Operand 787 states and 1132 transitions. [2022-03-20 12:03:59,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-03-20 12:03:59,523 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 12:03:59,523 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 12:03:59,523 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-03-20 12:03:59,523 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 12:03:59,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 12:03:59,523 INFO L85 PathProgramCache]: Analyzing trace with hash -1387045423, now seen corresponding path program 1 times [2022-03-20 12:03:59,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 12:03:59,524 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1646122998] [2022-03-20 12:03:59,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 12:03:59,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 12:03:59,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:03:59,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 12:03:59,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:03:59,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 12:03:59,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:03:59,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 12:03:59,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:03:59,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 12:03:59,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 12:03:59,660 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1646122998] [2022-03-20 12:03:59,661 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1646122998] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 12:03:59,661 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 12:03:59,661 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-20 12:03:59,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523743552] [2022-03-20 12:03:59,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 12:03:59,661 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-20 12:03:59,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 12:03:59,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-20 12:03:59,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-03-20 12:03:59,662 INFO L87 Difference]: Start difference. First operand 787 states and 1132 transitions. Second operand has 6 states, 6 states have (on average 3.5) internal successors, (21), 3 states have internal predecessors, (21), 2 states have call successors, (7), 5 states have call predecessors, (7), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-03-20 12:04:01,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 12:04:01,903 INFO L93 Difference]: Finished difference Result 1624 states and 2440 transitions. [2022-03-20 12:04:01,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-20 12:04:01,903 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 3 states have internal predecessors, (21), 2 states have call successors, (7), 5 states have call predecessors, (7), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 31 [2022-03-20 12:04:01,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 12:04:01,909 INFO L225 Difference]: With dead ends: 1624 [2022-03-20 12:04:01,910 INFO L226 Difference]: Without dead ends: 1340 [2022-03-20 12:04:01,911 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-03-20 12:04:01,919 INFO L913 BasicCegarLoop]: 1003 mSDtfsCounter, 1092 mSDsluCounter, 275 mSDsCounter, 0 mSdLazyCounter, 1913 mSolverCounterSat, 374 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1095 SdHoareTripleChecker+Valid, 1278 SdHoareTripleChecker+Invalid, 2287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 374 IncrementalHoareTripleChecker+Valid, 1913 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-03-20 12:04:01,921 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1095 Valid, 1278 Invalid, 2287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [374 Valid, 1913 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-03-20 12:04:01,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1340 states. [2022-03-20 12:04:01,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1340 to 905. [2022-03-20 12:04:01,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 905 states, 707 states have (on average 1.413012729844413) internal successors, (999), 709 states have internal predecessors, (999), 126 states have call successors, (126), 54 states have call predecessors, (126), 71 states have return successors, (220), 144 states have call predecessors, (220), 117 states have call successors, (220) [2022-03-20 12:04:01,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 905 states to 905 states and 1345 transitions. [2022-03-20 12:04:01,986 INFO L78 Accepts]: Start accepts. Automaton has 905 states and 1345 transitions. Word has length 31 [2022-03-20 12:04:01,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 12:04:01,987 INFO L478 AbstractCegarLoop]: Abstraction has 905 states and 1345 transitions. [2022-03-20 12:04:01,987 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 3 states have internal predecessors, (21), 2 states have call successors, (7), 5 states have call predecessors, (7), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-03-20 12:04:01,987 INFO L276 IsEmpty]: Start isEmpty. Operand 905 states and 1345 transitions. [2022-03-20 12:04:01,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-03-20 12:04:01,990 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 12:04:01,990 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 12:04:01,990 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-03-20 12:04:01,990 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 12:04:01,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 12:04:01,991 INFO L85 PathProgramCache]: Analyzing trace with hash -81256447, now seen corresponding path program 1 times [2022-03-20 12:04:01,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 12:04:01,991 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011674934] [2022-03-20 12:04:01,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 12:04:01,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 12:04:02,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:02,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 12:04:02,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:02,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 12:04:02,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:02,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 12:04:02,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:02,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 12:04:02,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 12:04:02,222 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011674934] [2022-03-20 12:04:02,222 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2011674934] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 12:04:02,222 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 12:04:02,222 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-03-20 12:04:02,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314524697] [2022-03-20 12:04:02,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 12:04:02,222 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-20 12:04:02,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 12:04:02,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-20 12:04:02,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-03-20 12:04:02,223 INFO L87 Difference]: Start difference. First operand 905 states and 1345 transitions. Second operand has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 6 states have internal predecessors, (22), 4 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-03-20 12:04:03,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 12:04:03,960 INFO L93 Difference]: Finished difference Result 1626 states and 2474 transitions. [2022-03-20 12:04:03,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-20 12:04:03,961 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 6 states have internal predecessors, (22), 4 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 32 [2022-03-20 12:04:03,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 12:04:03,966 INFO L225 Difference]: With dead ends: 1626 [2022-03-20 12:04:03,966 INFO L226 Difference]: Without dead ends: 1042 [2022-03-20 12:04:03,968 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2022-03-20 12:04:03,968 INFO L913 BasicCegarLoop]: 732 mSDtfsCounter, 2116 mSDsluCounter, 259 mSDsCounter, 0 mSdLazyCounter, 1084 mSolverCounterSat, 699 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2122 SdHoareTripleChecker+Valid, 991 SdHoareTripleChecker+Invalid, 1783 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 699 IncrementalHoareTripleChecker+Valid, 1084 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-03-20 12:04:03,968 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [2122 Valid, 991 Invalid, 1783 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [699 Valid, 1084 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-03-20 12:04:03,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1042 states. [2022-03-20 12:04:04,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1042 to 833. [2022-03-20 12:04:04,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 833 states, 648 states have (on average 1.3981481481481481) internal successors, (906), 651 states have internal predecessors, (906), 117 states have call successors, (117), 50 states have call predecessors, (117), 67 states have return successors, (177), 134 states have call predecessors, (177), 108 states have call successors, (177) [2022-03-20 12:04:04,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 833 states to 833 states and 1200 transitions. [2022-03-20 12:04:04,014 INFO L78 Accepts]: Start accepts. Automaton has 833 states and 1200 transitions. Word has length 32 [2022-03-20 12:04:04,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 12:04:04,014 INFO L478 AbstractCegarLoop]: Abstraction has 833 states and 1200 transitions. [2022-03-20 12:04:04,014 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 6 states have internal predecessors, (22), 4 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-03-20 12:04:04,014 INFO L276 IsEmpty]: Start isEmpty. Operand 833 states and 1200 transitions. [2022-03-20 12:04:04,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-03-20 12:04:04,015 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 12:04:04,016 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 12:04:04,016 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-03-20 12:04:04,016 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 12:04:04,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 12:04:04,016 INFO L85 PathProgramCache]: Analyzing trace with hash 2003772890, now seen corresponding path program 1 times [2022-03-20 12:04:04,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 12:04:04,016 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024808062] [2022-03-20 12:04:04,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 12:04:04,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 12:04:04,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:04,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 12:04:04,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:04,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 12:04:04,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:04,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 12:04:04,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:04,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 12:04:04,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 12:04:04,132 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024808062] [2022-03-20 12:04:04,132 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1024808062] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 12:04:04,132 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 12:04:04,132 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-20 12:04:04,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093871341] [2022-03-20 12:04:04,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 12:04:04,133 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-20 12:04:04,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 12:04:04,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-20 12:04:04,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-03-20 12:04:04,133 INFO L87 Difference]: Start difference. First operand 833 states and 1200 transitions. Second operand has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 3 states have internal predecessors, (25), 3 states have call successors, (8), 6 states have call predecessors, (8), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-03-20 12:04:05,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 12:04:05,925 INFO L93 Difference]: Finished difference Result 963 states and 1422 transitions. [2022-03-20 12:04:05,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-20 12:04:05,926 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 3 states have internal predecessors, (25), 3 states have call successors, (8), 6 states have call predecessors, (8), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 36 [2022-03-20 12:04:05,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 12:04:05,931 INFO L225 Difference]: With dead ends: 963 [2022-03-20 12:04:05,931 INFO L226 Difference]: Without dead ends: 959 [2022-03-20 12:04:05,931 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-03-20 12:04:05,932 INFO L913 BasicCegarLoop]: 710 mSDtfsCounter, 407 mSDsluCounter, 265 mSDsCounter, 0 mSdLazyCounter, 1876 mSolverCounterSat, 141 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 408 SdHoareTripleChecker+Valid, 975 SdHoareTripleChecker+Invalid, 2017 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 141 IncrementalHoareTripleChecker+Valid, 1876 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-03-20 12:04:05,932 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [408 Valid, 975 Invalid, 2017 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [141 Valid, 1876 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-03-20 12:04:05,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 959 states. [2022-03-20 12:04:05,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 959 to 832. [2022-03-20 12:04:05,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 832 states, 648 states have (on average 1.3950617283950617) internal successors, (904), 650 states have internal predecessors, (904), 116 states have call successors, (116), 50 states have call predecessors, (116), 67 states have return successors, (177), 134 states have call predecessors, (177), 108 states have call successors, (177) [2022-03-20 12:04:05,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 832 states to 832 states and 1197 transitions. [2022-03-20 12:04:05,975 INFO L78 Accepts]: Start accepts. Automaton has 832 states and 1197 transitions. Word has length 36 [2022-03-20 12:04:05,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 12:04:05,975 INFO L478 AbstractCegarLoop]: Abstraction has 832 states and 1197 transitions. [2022-03-20 12:04:05,975 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 3 states have internal predecessors, (25), 3 states have call successors, (8), 6 states have call predecessors, (8), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-03-20 12:04:05,975 INFO L276 IsEmpty]: Start isEmpty. Operand 832 states and 1197 transitions. [2022-03-20 12:04:05,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-03-20 12:04:05,977 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 12:04:05,977 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 12:04:05,977 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-03-20 12:04:05,977 INFO L403 AbstractCegarLoop]: === Iteration 7 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 12:04:05,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 12:04:05,978 INFO L85 PathProgramCache]: Analyzing trace with hash 1794233418, now seen corresponding path program 1 times [2022-03-20 12:04:05,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 12:04:05,978 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560366646] [2022-03-20 12:04:05,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 12:04:05,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 12:04:05,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:06,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 12:04:06,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:06,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 12:04:06,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:06,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 12:04:06,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:06,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 12:04:06,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 12:04:06,094 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560366646] [2022-03-20 12:04:06,094 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [560366646] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 12:04:06,094 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 12:04:06,095 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-03-20 12:04:06,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288546210] [2022-03-20 12:04:06,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 12:04:06,095 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-20 12:04:06,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 12:04:06,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-20 12:04:06,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-03-20 12:04:06,096 INFO L87 Difference]: Start difference. First operand 832 states and 1197 transitions. Second operand has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 4 states have internal predecessors, (26), 3 states have call successors, (10), 6 states have call predecessors, (10), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-03-20 12:04:08,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 12:04:08,420 INFO L93 Difference]: Finished difference Result 1409 states and 2012 transitions. [2022-03-20 12:04:08,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-20 12:04:08,421 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 4 states have internal predecessors, (26), 3 states have call successors, (10), 6 states have call predecessors, (10), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 39 [2022-03-20 12:04:08,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 12:04:08,425 INFO L225 Difference]: With dead ends: 1409 [2022-03-20 12:04:08,425 INFO L226 Difference]: Without dead ends: 993 [2022-03-20 12:04:08,426 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-03-20 12:04:08,427 INFO L913 BasicCegarLoop]: 812 mSDtfsCounter, 744 mSDsluCounter, 454 mSDsCounter, 0 mSdLazyCounter, 2621 mSolverCounterSat, 235 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 746 SdHoareTripleChecker+Valid, 1266 SdHoareTripleChecker+Invalid, 2856 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 235 IncrementalHoareTripleChecker+Valid, 2621 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-03-20 12:04:08,427 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [746 Valid, 1266 Invalid, 2856 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [235 Valid, 2621 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-03-20 12:04:08,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 993 states. [2022-03-20 12:04:08,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 993 to 734. [2022-03-20 12:04:08,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 734 states, 570 states have (on average 1.3859649122807018) internal successors, (790), 573 states have internal predecessors, (790), 105 states have call successors, (105), 45 states have call predecessors, (105), 58 states have return successors, (131), 118 states have call predecessors, (131), 97 states have call successors, (131) [2022-03-20 12:04:08,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 734 states to 734 states and 1026 transitions. [2022-03-20 12:04:08,468 INFO L78 Accepts]: Start accepts. Automaton has 734 states and 1026 transitions. Word has length 39 [2022-03-20 12:04:08,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 12:04:08,468 INFO L478 AbstractCegarLoop]: Abstraction has 734 states and 1026 transitions. [2022-03-20 12:04:08,468 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 4 states have internal predecessors, (26), 3 states have call successors, (10), 6 states have call predecessors, (10), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-03-20 12:04:08,468 INFO L276 IsEmpty]: Start isEmpty. Operand 734 states and 1026 transitions. [2022-03-20 12:04:08,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-03-20 12:04:08,469 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 12:04:08,469 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 12:04:08,470 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-03-20 12:04:08,470 INFO L403 AbstractCegarLoop]: === Iteration 8 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 12:04:08,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 12:04:08,470 INFO L85 PathProgramCache]: Analyzing trace with hash -1491782484, now seen corresponding path program 1 times [2022-03-20 12:04:08,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 12:04:08,470 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839529947] [2022-03-20 12:04:08,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 12:04:08,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 12:04:08,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:08,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 12:04:08,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:08,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 12:04:08,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:08,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 12:04:08,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:08,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 12:04:08,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 12:04:08,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839529947] [2022-03-20 12:04:08,584 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [839529947] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 12:04:08,584 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 12:04:08,584 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-20 12:04:08,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831255573] [2022-03-20 12:04:08,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 12:04:08,585 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-20 12:04:08,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 12:04:08,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-20 12:04:08,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-03-20 12:04:08,585 INFO L87 Difference]: Start difference. First operand 734 states and 1026 transitions. Second operand has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 3 states have internal predecessors, (28), 3 states have call successors, (9), 6 states have call predecessors, (9), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-03-20 12:04:10,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 12:04:10,041 INFO L93 Difference]: Finished difference Result 975 states and 1402 transitions. [2022-03-20 12:04:10,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-20 12:04:10,041 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 3 states have internal predecessors, (28), 3 states have call successors, (9), 6 states have call predecessors, (9), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 40 [2022-03-20 12:04:10,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 12:04:10,046 INFO L225 Difference]: With dead ends: 975 [2022-03-20 12:04:10,046 INFO L226 Difference]: Without dead ends: 957 [2022-03-20 12:04:10,046 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-03-20 12:04:10,047 INFO L913 BasicCegarLoop]: 669 mSDtfsCounter, 1139 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 999 mSolverCounterSat, 248 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1147 SdHoareTripleChecker+Valid, 749 SdHoareTripleChecker+Invalid, 1247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 248 IncrementalHoareTripleChecker+Valid, 999 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-03-20 12:04:10,047 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1147 Valid, 749 Invalid, 1247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [248 Valid, 999 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-03-20 12:04:10,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 957 states. [2022-03-20 12:04:10,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 957 to 754. [2022-03-20 12:04:10,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 754 states, 588 states have (on average 1.3962585034013606) internal successors, (821), 600 states have internal predecessors, (821), 107 states have call successors, (107), 48 states have call predecessors, (107), 58 states have return successors, (124), 110 states have call predecessors, (124), 100 states have call successors, (124) [2022-03-20 12:04:10,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 754 states to 754 states and 1052 transitions. [2022-03-20 12:04:10,094 INFO L78 Accepts]: Start accepts. Automaton has 754 states and 1052 transitions. Word has length 40 [2022-03-20 12:04:10,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 12:04:10,094 INFO L478 AbstractCegarLoop]: Abstraction has 754 states and 1052 transitions. [2022-03-20 12:04:10,094 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 3 states have internal predecessors, (28), 3 states have call successors, (9), 6 states have call predecessors, (9), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-03-20 12:04:10,094 INFO L276 IsEmpty]: Start isEmpty. Operand 754 states and 1052 transitions. [2022-03-20 12:04:10,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-03-20 12:04:10,096 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 12:04:10,096 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 12:04:10,096 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-03-20 12:04:10,096 INFO L403 AbstractCegarLoop]: === Iteration 9 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 12:04:10,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 12:04:10,096 INFO L85 PathProgramCache]: Analyzing trace with hash 938541339, now seen corresponding path program 1 times [2022-03-20 12:04:10,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 12:04:10,097 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743026446] [2022-03-20 12:04:10,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 12:04:10,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 12:04:10,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:10,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 12:04:10,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:10,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 12:04:10,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:10,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 12:04:10,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:10,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-03-20 12:04:10,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:10,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 12:04:10,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 12:04:10,212 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743026446] [2022-03-20 12:04:10,212 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1743026446] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 12:04:10,212 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 12:04:10,212 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-03-20 12:04:10,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411843150] [2022-03-20 12:04:10,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 12:04:10,213 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-20 12:04:10,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 12:04:10,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-20 12:04:10,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-03-20 12:04:10,213 INFO L87 Difference]: Start difference. First operand 754 states and 1052 transitions. Second operand has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 3 states have internal predecessors, (32), 3 states have call successors, (10), 7 states have call predecessors, (10), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-03-20 12:04:11,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 12:04:11,812 INFO L93 Difference]: Finished difference Result 1159 states and 1659 transitions. [2022-03-20 12:04:11,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-20 12:04:11,813 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 3 states have internal predecessors, (32), 3 states have call successors, (10), 7 states have call predecessors, (10), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 46 [2022-03-20 12:04:11,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 12:04:11,816 INFO L225 Difference]: With dead ends: 1159 [2022-03-20 12:04:11,817 INFO L226 Difference]: Without dead ends: 934 [2022-03-20 12:04:11,818 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2022-03-20 12:04:11,818 INFO L913 BasicCegarLoop]: 788 mSDtfsCounter, 580 mSDsluCounter, 524 mSDsCounter, 0 mSdLazyCounter, 1334 mSolverCounterSat, 158 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 586 SdHoareTripleChecker+Valid, 1312 SdHoareTripleChecker+Invalid, 1492 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 158 IncrementalHoareTripleChecker+Valid, 1334 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-03-20 12:04:11,818 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [586 Valid, 1312 Invalid, 1492 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [158 Valid, 1334 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-03-20 12:04:11,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 934 states. [2022-03-20 12:04:11,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 934 to 754. [2022-03-20 12:04:11,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 754 states, 588 states have (on average 1.3945578231292517) internal successors, (820), 600 states have internal predecessors, (820), 107 states have call successors, (107), 48 states have call predecessors, (107), 58 states have return successors, (124), 110 states have call predecessors, (124), 100 states have call successors, (124) [2022-03-20 12:04:11,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 754 states to 754 states and 1051 transitions. [2022-03-20 12:04:11,864 INFO L78 Accepts]: Start accepts. Automaton has 754 states and 1051 transitions. Word has length 46 [2022-03-20 12:04:11,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 12:04:11,865 INFO L478 AbstractCegarLoop]: Abstraction has 754 states and 1051 transitions. [2022-03-20 12:04:11,865 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 3 states have internal predecessors, (32), 3 states have call successors, (10), 7 states have call predecessors, (10), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-03-20 12:04:11,865 INFO L276 IsEmpty]: Start isEmpty. Operand 754 states and 1051 transitions. [2022-03-20 12:04:11,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-03-20 12:04:11,867 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 12:04:11,867 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 12:04:11,867 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-03-20 12:04:11,867 INFO L403 AbstractCegarLoop]: === Iteration 10 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 12:04:11,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 12:04:11,867 INFO L85 PathProgramCache]: Analyzing trace with hash -747319687, now seen corresponding path program 1 times [2022-03-20 12:04:11,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 12:04:11,868 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041028859] [2022-03-20 12:04:11,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 12:04:11,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 12:04:11,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:11,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 12:04:11,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:11,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 12:04:11,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:11,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 12:04:11,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:11,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-03-20 12:04:11,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:11,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 12:04:11,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 12:04:11,992 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041028859] [2022-03-20 12:04:11,992 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2041028859] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 12:04:11,993 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 12:04:11,993 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-03-20 12:04:11,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119880458] [2022-03-20 12:04:11,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 12:04:11,993 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-20 12:04:11,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 12:04:11,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-20 12:04:11,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-03-20 12:04:11,994 INFO L87 Difference]: Start difference. First operand 754 states and 1051 transitions. Second operand has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 3 states have internal predecessors, (34), 3 states have call successors, (9), 7 states have call predecessors, (9), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-03-20 12:04:13,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 12:04:13,185 INFO L93 Difference]: Finished difference Result 956 states and 1371 transitions. [2022-03-20 12:04:13,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-20 12:04:13,185 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 3 states have internal predecessors, (34), 3 states have call successors, (9), 7 states have call predecessors, (9), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 47 [2022-03-20 12:04:13,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 12:04:13,188 INFO L225 Difference]: With dead ends: 956 [2022-03-20 12:04:13,188 INFO L226 Difference]: Without dead ends: 889 [2022-03-20 12:04:13,189 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=53, Unknown=0, NotChecked=0, Total=90 [2022-03-20 12:04:13,189 INFO L913 BasicCegarLoop]: 664 mSDtfsCounter, 1894 mSDsluCounter, 446 mSDsCounter, 0 mSdLazyCounter, 732 mSolverCounterSat, 543 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1900 SdHoareTripleChecker+Valid, 1110 SdHoareTripleChecker+Invalid, 1275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 543 IncrementalHoareTripleChecker+Valid, 732 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-03-20 12:04:13,190 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1900 Valid, 1110 Invalid, 1275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [543 Valid, 732 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-03-20 12:04:13,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 889 states. [2022-03-20 12:04:13,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 889 to 743. [2022-03-20 12:04:13,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 743 states, 581 states have (on average 1.395869191049914) internal successors, (811), 593 states have internal predecessors, (811), 105 states have call successors, (105), 46 states have call predecessors, (105), 56 states have return successors, (122), 108 states have call predecessors, (122), 98 states have call successors, (122) [2022-03-20 12:04:13,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 743 states to 743 states and 1038 transitions. [2022-03-20 12:04:13,236 INFO L78 Accepts]: Start accepts. Automaton has 743 states and 1038 transitions. Word has length 47 [2022-03-20 12:04:13,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 12:04:13,236 INFO L478 AbstractCegarLoop]: Abstraction has 743 states and 1038 transitions. [2022-03-20 12:04:13,236 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 3 states have internal predecessors, (34), 3 states have call successors, (9), 7 states have call predecessors, (9), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-03-20 12:04:13,236 INFO L276 IsEmpty]: Start isEmpty. Operand 743 states and 1038 transitions. [2022-03-20 12:04:13,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-03-20 12:04:13,238 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 12:04:13,238 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 12:04:13,238 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-03-20 12:04:13,239 INFO L403 AbstractCegarLoop]: === Iteration 11 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 12:04:13,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 12:04:13,239 INFO L85 PathProgramCache]: Analyzing trace with hash -1537806195, now seen corresponding path program 1 times [2022-03-20 12:04:13,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 12:04:13,239 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972627345] [2022-03-20 12:04:13,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 12:04:13,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 12:04:13,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:13,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 12:04:13,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:13,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 12:04:13,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:13,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 12:04:13,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:13,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-03-20 12:04:13,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:13,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-20 12:04:13,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:13,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 12:04:13,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 12:04:13,401 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972627345] [2022-03-20 12:04:13,401 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [972627345] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 12:04:13,401 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 12:04:13,401 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-03-20 12:04:13,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517686810] [2022-03-20 12:04:13,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 12:04:13,401 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-20 12:04:13,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 12:04:13,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-20 12:04:13,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2022-03-20 12:04:13,403 INFO L87 Difference]: Start difference. First operand 743 states and 1038 transitions. Second operand has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 7 states have internal predecessors, (36), 4 states have call successors, (7), 6 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2022-03-20 12:04:15,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 12:04:15,114 INFO L93 Difference]: Finished difference Result 1059 states and 1503 transitions. [2022-03-20 12:04:15,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-03-20 12:04:15,115 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 7 states have internal predecessors, (36), 4 states have call successors, (7), 6 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) Word has length 48 [2022-03-20 12:04:15,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 12:04:15,120 INFO L225 Difference]: With dead ends: 1059 [2022-03-20 12:04:15,120 INFO L226 Difference]: Without dead ends: 998 [2022-03-20 12:04:15,121 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=119, Invalid=343, Unknown=0, NotChecked=0, Total=462 [2022-03-20 12:04:15,121 INFO L913 BasicCegarLoop]: 761 mSDtfsCounter, 2176 mSDsluCounter, 967 mSDsCounter, 0 mSdLazyCounter, 2270 mSolverCounterSat, 723 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2204 SdHoareTripleChecker+Valid, 1728 SdHoareTripleChecker+Invalid, 2993 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 723 IncrementalHoareTripleChecker+Valid, 2270 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-03-20 12:04:15,121 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [2204 Valid, 1728 Invalid, 2993 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [723 Valid, 2270 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-03-20 12:04:15,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 998 states. [2022-03-20 12:04:15,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 998 to 786. [2022-03-20 12:04:15,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 786 states, 616 states have (on average 1.3944805194805194) internal successors, (859), 627 states have internal predecessors, (859), 109 states have call successors, (109), 49 states have call predecessors, (109), 60 states have return successors, (131), 114 states have call predecessors, (131), 102 states have call successors, (131) [2022-03-20 12:04:15,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 786 states to 786 states and 1099 transitions. [2022-03-20 12:04:15,171 INFO L78 Accepts]: Start accepts. Automaton has 786 states and 1099 transitions. Word has length 48 [2022-03-20 12:04:15,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 12:04:15,171 INFO L478 AbstractCegarLoop]: Abstraction has 786 states and 1099 transitions. [2022-03-20 12:04:15,171 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 7 states have internal predecessors, (36), 4 states have call successors, (7), 6 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2022-03-20 12:04:15,171 INFO L276 IsEmpty]: Start isEmpty. Operand 786 states and 1099 transitions. [2022-03-20 12:04:15,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-03-20 12:04:15,173 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 12:04:15,173 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 12:04:15,173 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-03-20 12:04:15,173 INFO L403 AbstractCegarLoop]: === Iteration 12 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 12:04:15,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 12:04:15,173 INFO L85 PathProgramCache]: Analyzing trace with hash 520235537, now seen corresponding path program 1 times [2022-03-20 12:04:15,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 12:04:15,174 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932021649] [2022-03-20 12:04:15,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 12:04:15,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 12:04:15,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:15,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 12:04:15,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:15,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 12:04:15,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:15,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 12:04:15,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:15,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-03-20 12:04:15,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:15,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-20 12:04:15,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:15,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 12:04:15,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 12:04:15,346 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932021649] [2022-03-20 12:04:15,346 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1932021649] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 12:04:15,346 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 12:04:15,346 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-03-20 12:04:15,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491166678] [2022-03-20 12:04:15,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 12:04:15,347 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-20 12:04:15,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 12:04:15,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-20 12:04:15,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-03-20 12:04:15,348 INFO L87 Difference]: Start difference. First operand 786 states and 1099 transitions. Second operand has 10 states, 10 states have (on average 3.8) internal successors, (38), 6 states have internal predecessors, (38), 3 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2022-03-20 12:04:17,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 12:04:17,422 INFO L93 Difference]: Finished difference Result 947 states and 1359 transitions. [2022-03-20 12:04:17,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-20 12:04:17,422 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.8) internal successors, (38), 6 states have internal predecessors, (38), 3 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) Word has length 50 [2022-03-20 12:04:17,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 12:04:17,426 INFO L225 Difference]: With dead ends: 947 [2022-03-20 12:04:17,426 INFO L226 Difference]: Without dead ends: 919 [2022-03-20 12:04:17,426 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=95, Invalid=211, Unknown=0, NotChecked=0, Total=306 [2022-03-20 12:04:17,427 INFO L913 BasicCegarLoop]: 649 mSDtfsCounter, 1533 mSDsluCounter, 795 mSDsCounter, 0 mSdLazyCounter, 1776 mSolverCounterSat, 390 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1544 SdHoareTripleChecker+Valid, 1444 SdHoareTripleChecker+Invalid, 2166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 390 IncrementalHoareTripleChecker+Valid, 1776 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-03-20 12:04:17,427 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1544 Valid, 1444 Invalid, 2166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [390 Valid, 1776 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-03-20 12:04:17,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 919 states. [2022-03-20 12:04:17,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 919 to 789. [2022-03-20 12:04:17,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 789 states, 619 states have (on average 1.394184168012924) internal successors, (863), 630 states have internal predecessors, (863), 109 states have call successors, (109), 49 states have call predecessors, (109), 60 states have return successors, (131), 114 states have call predecessors, (131), 102 states have call successors, (131) [2022-03-20 12:04:17,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 789 states to 789 states and 1103 transitions. [2022-03-20 12:04:17,479 INFO L78 Accepts]: Start accepts. Automaton has 789 states and 1103 transitions. Word has length 50 [2022-03-20 12:04:17,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 12:04:17,479 INFO L478 AbstractCegarLoop]: Abstraction has 789 states and 1103 transitions. [2022-03-20 12:04:17,480 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.8) internal successors, (38), 6 states have internal predecessors, (38), 3 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2022-03-20 12:04:17,480 INFO L276 IsEmpty]: Start isEmpty. Operand 789 states and 1103 transitions. [2022-03-20 12:04:17,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-03-20 12:04:17,481 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 12:04:17,481 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 12:04:17,481 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-03-20 12:04:17,481 INFO L403 AbstractCegarLoop]: === Iteration 13 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 12:04:17,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 12:04:17,482 INFO L85 PathProgramCache]: Analyzing trace with hash -476836816, now seen corresponding path program 1 times [2022-03-20 12:04:17,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 12:04:17,482 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178066769] [2022-03-20 12:04:17,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 12:04:17,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 12:04:17,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:17,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 12:04:17,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:17,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 12:04:17,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:17,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 12:04:17,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:17,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-03-20 12:04:17,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:17,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-20 12:04:17,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:17,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 12:04:17,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 12:04:17,644 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178066769] [2022-03-20 12:04:17,644 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [178066769] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 12:04:17,644 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 12:04:17,644 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-20 12:04:17,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284178651] [2022-03-20 12:04:17,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 12:04:17,644 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-20 12:04:17,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 12:04:17,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-20 12:04:17,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2022-03-20 12:04:17,645 INFO L87 Difference]: Start difference. First operand 789 states and 1103 transitions. Second operand has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 8 states have internal predecessors, (38), 4 states have call successors, (7), 6 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2022-03-20 12:04:19,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 12:04:19,838 INFO L93 Difference]: Finished difference Result 970 states and 1390 transitions. [2022-03-20 12:04:19,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-20 12:04:19,839 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 8 states have internal predecessors, (38), 4 states have call successors, (7), 6 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) Word has length 50 [2022-03-20 12:04:19,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 12:04:19,842 INFO L225 Difference]: With dead ends: 970 [2022-03-20 12:04:19,842 INFO L226 Difference]: Without dead ends: 906 [2022-03-20 12:04:19,842 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2022-03-20 12:04:19,843 INFO L913 BasicCegarLoop]: 649 mSDtfsCounter, 1874 mSDsluCounter, 871 mSDsCounter, 0 mSdLazyCounter, 2855 mSolverCounterSat, 529 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1883 SdHoareTripleChecker+Valid, 1520 SdHoareTripleChecker+Invalid, 3384 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 529 IncrementalHoareTripleChecker+Valid, 2855 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-03-20 12:04:19,843 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1883 Valid, 1520 Invalid, 3384 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [529 Valid, 2855 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-03-20 12:04:19,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 906 states. [2022-03-20 12:04:19,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 906 to 784. [2022-03-20 12:04:19,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 784 states, 614 states have (on average 1.3892508143322475) internal successors, (853), 625 states have internal predecessors, (853), 109 states have call successors, (109), 49 states have call predecessors, (109), 60 states have return successors, (131), 114 states have call predecessors, (131), 102 states have call successors, (131) [2022-03-20 12:04:19,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 784 states to 784 states and 1093 transitions. [2022-03-20 12:04:19,893 INFO L78 Accepts]: Start accepts. Automaton has 784 states and 1093 transitions. Word has length 50 [2022-03-20 12:04:19,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 12:04:19,894 INFO L478 AbstractCegarLoop]: Abstraction has 784 states and 1093 transitions. [2022-03-20 12:04:19,894 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 8 states have internal predecessors, (38), 4 states have call successors, (7), 6 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2022-03-20 12:04:19,894 INFO L276 IsEmpty]: Start isEmpty. Operand 784 states and 1093 transitions. [2022-03-20 12:04:19,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-03-20 12:04:19,895 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 12:04:19,895 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 12:04:19,895 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-03-20 12:04:19,895 INFO L403 AbstractCegarLoop]: === Iteration 14 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 12:04:19,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 12:04:19,896 INFO L85 PathProgramCache]: Analyzing trace with hash 1976586256, now seen corresponding path program 1 times [2022-03-20 12:04:19,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 12:04:19,896 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557321181] [2022-03-20 12:04:19,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 12:04:19,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 12:04:19,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:19,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 12:04:19,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:19,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 12:04:19,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:19,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 12:04:19,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:19,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-03-20 12:04:20,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:20,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-20 12:04:20,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:20,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 12:04:20,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 12:04:20,024 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557321181] [2022-03-20 12:04:20,024 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [557321181] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 12:04:20,024 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 12:04:20,024 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-03-20 12:04:20,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687486104] [2022-03-20 12:04:20,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 12:04:20,025 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-20 12:04:20,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 12:04:20,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-20 12:04:20,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-03-20 12:04:20,026 INFO L87 Difference]: Start difference. First operand 784 states and 1093 transitions. Second operand has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (7), 6 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2022-03-20 12:04:22,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 12:04:22,077 INFO L93 Difference]: Finished difference Result 1071 states and 1527 transitions. [2022-03-20 12:04:22,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-20 12:04:22,077 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (7), 6 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) Word has length 50 [2022-03-20 12:04:22,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 12:04:22,081 INFO L225 Difference]: With dead ends: 1071 [2022-03-20 12:04:22,081 INFO L226 Difference]: Without dead ends: 1060 [2022-03-20 12:04:22,082 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-03-20 12:04:22,082 INFO L913 BasicCegarLoop]: 796 mSDtfsCounter, 520 mSDsluCounter, 557 mSDsCounter, 0 mSdLazyCounter, 1832 mSolverCounterSat, 153 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 523 SdHoareTripleChecker+Valid, 1353 SdHoareTripleChecker+Invalid, 1985 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 153 IncrementalHoareTripleChecker+Valid, 1832 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-03-20 12:04:22,082 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [523 Valid, 1353 Invalid, 1985 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [153 Valid, 1832 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-03-20 12:04:22,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1060 states. [2022-03-20 12:04:22,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1060 to 837. [2022-03-20 12:04:22,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 837 states, 653 states have (on average 1.3721286370597243) internal successors, (896), 666 states have internal predecessors, (896), 111 states have call successors, (111), 51 states have call predecessors, (111), 72 states have return successors, (143), 126 states have call predecessors, (143), 104 states have call successors, (143) [2022-03-20 12:04:22,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 837 states to 837 states and 1150 transitions. [2022-03-20 12:04:22,141 INFO L78 Accepts]: Start accepts. Automaton has 837 states and 1150 transitions. Word has length 50 [2022-03-20 12:04:22,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 12:04:22,142 INFO L478 AbstractCegarLoop]: Abstraction has 837 states and 1150 transitions. [2022-03-20 12:04:22,142 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (7), 6 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2022-03-20 12:04:22,142 INFO L276 IsEmpty]: Start isEmpty. Operand 837 states and 1150 transitions. [2022-03-20 12:04:22,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-03-20 12:04:22,143 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 12:04:22,143 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 12:04:22,144 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-03-20 12:04:22,144 INFO L403 AbstractCegarLoop]: === Iteration 15 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 12:04:22,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 12:04:22,144 INFO L85 PathProgramCache]: Analyzing trace with hash 2001757018, now seen corresponding path program 1 times [2022-03-20 12:04:22,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 12:04:22,144 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656027977] [2022-03-20 12:04:22,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 12:04:22,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 12:04:22,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:22,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 12:04:22,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:22,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 12:04:22,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:22,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 12:04:22,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:22,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-20 12:04:22,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:22,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-20 12:04:22,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:22,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 12:04:22,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:22,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 12:04:22,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 12:04:22,295 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656027977] [2022-03-20 12:04:22,295 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [656027977] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 12:04:22,295 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 12:04:22,295 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-03-20 12:04:22,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688896013] [2022-03-20 12:04:22,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 12:04:22,295 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-20 12:04:22,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 12:04:22,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-20 12:04:22,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2022-03-20 12:04:22,296 INFO L87 Difference]: Start difference. First operand 837 states and 1150 transitions. Second operand has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (8), 8 states have call predecessors, (8), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2022-03-20 12:04:23,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 12:04:23,993 INFO L93 Difference]: Finished difference Result 982 states and 1391 transitions. [2022-03-20 12:04:23,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-20 12:04:23,993 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (8), 8 states have call predecessors, (8), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) Word has length 52 [2022-03-20 12:04:23,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 12:04:23,996 INFO L225 Difference]: With dead ends: 982 [2022-03-20 12:04:23,996 INFO L226 Difference]: Without dead ends: 977 [2022-03-20 12:04:23,997 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2022-03-20 12:04:23,997 INFO L913 BasicCegarLoop]: 690 mSDtfsCounter, 823 mSDsluCounter, 688 mSDsCounter, 0 mSdLazyCounter, 1464 mSolverCounterSat, 284 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 826 SdHoareTripleChecker+Valid, 1378 SdHoareTripleChecker+Invalid, 1748 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 284 IncrementalHoareTripleChecker+Valid, 1464 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-03-20 12:04:23,997 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [826 Valid, 1378 Invalid, 1748 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [284 Valid, 1464 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-03-20 12:04:23,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 977 states. [2022-03-20 12:04:24,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 977 to 855. [2022-03-20 12:04:24,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 855 states, 668 states have (on average 1.3682634730538923) internal successors, (914), 682 states have internal predecessors, (914), 112 states have call successors, (112), 52 states have call predecessors, (112), 74 states have return successors, (145), 128 states have call predecessors, (145), 105 states have call successors, (145) [2022-03-20 12:04:24,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 855 states to 855 states and 1171 transitions. [2022-03-20 12:04:24,053 INFO L78 Accepts]: Start accepts. Automaton has 855 states and 1171 transitions. Word has length 52 [2022-03-20 12:04:24,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 12:04:24,053 INFO L478 AbstractCegarLoop]: Abstraction has 855 states and 1171 transitions. [2022-03-20 12:04:24,053 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (8), 8 states have call predecessors, (8), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2022-03-20 12:04:24,053 INFO L276 IsEmpty]: Start isEmpty. Operand 855 states and 1171 transitions. [2022-03-20 12:04:24,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-03-20 12:04:24,055 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 12:04:24,055 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 12:04:24,055 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-03-20 12:04:24,055 INFO L403 AbstractCegarLoop]: === Iteration 16 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 12:04:24,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 12:04:24,055 INFO L85 PathProgramCache]: Analyzing trace with hash 2085636174, now seen corresponding path program 1 times [2022-03-20 12:04:24,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 12:04:24,056 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835315246] [2022-03-20 12:04:24,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 12:04:24,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 12:04:24,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:24,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 12:04:24,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:24,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 12:04:24,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:24,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 12:04:24,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:24,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-03-20 12:04:24,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:24,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-03-20 12:04:24,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:24,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 12:04:24,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 12:04:24,167 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835315246] [2022-03-20 12:04:24,167 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1835315246] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 12:04:24,168 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 12:04:24,168 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-20 12:04:24,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619103775] [2022-03-20 12:04:24,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 12:04:24,168 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-20 12:04:24,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 12:04:24,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-20 12:04:24,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-03-20 12:04:24,169 INFO L87 Difference]: Start difference. First operand 855 states and 1171 transitions. Second operand has 8 states, 8 states have (on average 4.875) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (10), 7 states have call predecessors, (10), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2022-03-20 12:04:25,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 12:04:25,778 INFO L93 Difference]: Finished difference Result 1188 states and 1671 transitions. [2022-03-20 12:04:25,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-20 12:04:25,779 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (10), 7 states have call predecessors, (10), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) Word has length 54 [2022-03-20 12:04:25,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 12:04:25,782 INFO L225 Difference]: With dead ends: 1188 [2022-03-20 12:04:25,783 INFO L226 Difference]: Without dead ends: 947 [2022-03-20 12:04:25,783 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=67, Unknown=0, NotChecked=0, Total=110 [2022-03-20 12:04:25,784 INFO L913 BasicCegarLoop]: 638 mSDtfsCounter, 1398 mSDsluCounter, 526 mSDsCounter, 0 mSdLazyCounter, 1350 mSolverCounterSat, 497 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1431 SdHoareTripleChecker+Valid, 1164 SdHoareTripleChecker+Invalid, 1847 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 497 IncrementalHoareTripleChecker+Valid, 1350 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-03-20 12:04:25,784 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1431 Valid, 1164 Invalid, 1847 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [497 Valid, 1350 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-03-20 12:04:25,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 947 states. [2022-03-20 12:04:25,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 947 to 827. [2022-03-20 12:04:25,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 827 states, 647 states have (on average 1.3663060278207109) internal successors, (884), 659 states have internal predecessors, (884), 110 states have call successors, (110), 51 states have call predecessors, (110), 69 states have return successors, (140), 123 states have call predecessors, (140), 104 states have call successors, (140) [2022-03-20 12:04:25,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 827 states to 827 states and 1134 transitions. [2022-03-20 12:04:25,838 INFO L78 Accepts]: Start accepts. Automaton has 827 states and 1134 transitions. Word has length 54 [2022-03-20 12:04:25,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 12:04:25,839 INFO L478 AbstractCegarLoop]: Abstraction has 827 states and 1134 transitions. [2022-03-20 12:04:25,839 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (10), 7 states have call predecessors, (10), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2022-03-20 12:04:25,839 INFO L276 IsEmpty]: Start isEmpty. Operand 827 states and 1134 transitions. [2022-03-20 12:04:25,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-03-20 12:04:25,840 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 12:04:25,840 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 12:04:25,841 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-03-20 12:04:25,841 INFO L403 AbstractCegarLoop]: === Iteration 17 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 12:04:25,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 12:04:25,841 INFO L85 PathProgramCache]: Analyzing trace with hash 1175170233, now seen corresponding path program 1 times [2022-03-20 12:04:25,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 12:04:25,841 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392167625] [2022-03-20 12:04:25,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 12:04:25,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 12:04:25,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:25,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 12:04:25,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:25,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 12:04:25,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:25,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 12:04:25,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:25,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-03-20 12:04:25,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:25,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-20 12:04:25,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:26,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 12:04:26,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 12:04:26,027 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392167625] [2022-03-20 12:04:26,027 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1392167625] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 12:04:26,027 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 12:04:26,027 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-20 12:04:26,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379762739] [2022-03-20 12:04:26,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 12:04:26,028 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-20 12:04:26,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 12:04:26,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-20 12:04:26,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2022-03-20 12:04:26,029 INFO L87 Difference]: Start difference. First operand 827 states and 1134 transitions. Second operand has 12 states, 12 states have (on average 3.25) internal successors, (39), 6 states have internal predecessors, (39), 2 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2022-03-20 12:04:28,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 12:04:28,190 INFO L93 Difference]: Finished difference Result 972 states and 1374 transitions. [2022-03-20 12:04:28,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-20 12:04:28,191 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.25) internal successors, (39), 6 states have internal predecessors, (39), 2 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) Word has length 51 [2022-03-20 12:04:28,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 12:04:28,195 INFO L225 Difference]: With dead ends: 972 [2022-03-20 12:04:28,195 INFO L226 Difference]: Without dead ends: 968 [2022-03-20 12:04:28,195 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2022-03-20 12:04:28,196 INFO L913 BasicCegarLoop]: 704 mSDtfsCounter, 739 mSDsluCounter, 1726 mSDsCounter, 0 mSdLazyCounter, 3845 mSolverCounterSat, 276 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 741 SdHoareTripleChecker+Valid, 2430 SdHoareTripleChecker+Invalid, 4121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 276 IncrementalHoareTripleChecker+Valid, 3845 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-03-20 12:04:28,197 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [741 Valid, 2430 Invalid, 4121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [276 Valid, 3845 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-03-20 12:04:28,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 968 states. [2022-03-20 12:04:28,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 968 to 846. [2022-03-20 12:04:28,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 846 states, 663 states have (on average 1.358974358974359) internal successors, (901), 676 states have internal predecessors, (901), 111 states have call successors, (111), 51 states have call predecessors, (111), 71 states have return successors, (143), 126 states have call predecessors, (143), 105 states have call successors, (143) [2022-03-20 12:04:28,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 846 states to 846 states and 1155 transitions. [2022-03-20 12:04:28,255 INFO L78 Accepts]: Start accepts. Automaton has 846 states and 1155 transitions. Word has length 51 [2022-03-20 12:04:28,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 12:04:28,256 INFO L478 AbstractCegarLoop]: Abstraction has 846 states and 1155 transitions. [2022-03-20 12:04:28,256 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.25) internal successors, (39), 6 states have internal predecessors, (39), 2 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2022-03-20 12:04:28,256 INFO L276 IsEmpty]: Start isEmpty. Operand 846 states and 1155 transitions. [2022-03-20 12:04:28,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-03-20 12:04:28,257 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 12:04:28,257 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 12:04:28,257 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-03-20 12:04:28,258 INFO L403 AbstractCegarLoop]: === Iteration 18 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 12:04:28,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 12:04:28,258 INFO L85 PathProgramCache]: Analyzing trace with hash 1175201977, now seen corresponding path program 1 times [2022-03-20 12:04:28,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 12:04:28,258 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045064976] [2022-03-20 12:04:28,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 12:04:28,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 12:04:28,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:28,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 12:04:28,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:28,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 12:04:28,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:28,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 12:04:28,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:28,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-03-20 12:04:28,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:28,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-20 12:04:28,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:28,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 12:04:28,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 12:04:28,428 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045064976] [2022-03-20 12:04:28,428 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2045064976] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 12:04:28,428 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 12:04:28,428 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-20 12:04:28,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140875232] [2022-03-20 12:04:28,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 12:04:28,429 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-20 12:04:28,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 12:04:28,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-20 12:04:28,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2022-03-20 12:04:28,429 INFO L87 Difference]: Start difference. First operand 846 states and 1155 transitions. Second operand has 12 states, 12 states have (on average 3.25) internal successors, (39), 6 states have internal predecessors, (39), 2 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2022-03-20 12:04:30,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 12:04:30,231 INFO L93 Difference]: Finished difference Result 981 states and 1385 transitions. [2022-03-20 12:04:30,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-20 12:04:30,232 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.25) internal successors, (39), 6 states have internal predecessors, (39), 2 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) Word has length 51 [2022-03-20 12:04:30,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 12:04:30,235 INFO L225 Difference]: With dead ends: 981 [2022-03-20 12:04:30,235 INFO L226 Difference]: Without dead ends: 957 [2022-03-20 12:04:30,236 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2022-03-20 12:04:30,236 INFO L913 BasicCegarLoop]: 703 mSDtfsCounter, 1084 mSDsluCounter, 1634 mSDsCounter, 0 mSdLazyCounter, 3506 mSolverCounterSat, 411 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1086 SdHoareTripleChecker+Valid, 2337 SdHoareTripleChecker+Invalid, 3917 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 411 IncrementalHoareTripleChecker+Valid, 3506 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-03-20 12:04:30,236 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1086 Valid, 2337 Invalid, 3917 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [411 Valid, 3506 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-03-20 12:04:30,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 957 states. [2022-03-20 12:04:30,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 957 to 833. [2022-03-20 12:04:30,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 833 states, 652 states have (on average 1.3634969325153374) internal successors, (889), 665 states have internal predecessors, (889), 111 states have call successors, (111), 51 states have call predecessors, (111), 69 states have return successors, (141), 124 states have call predecessors, (141), 105 states have call successors, (141) [2022-03-20 12:04:30,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 833 states to 833 states and 1141 transitions. [2022-03-20 12:04:30,293 INFO L78 Accepts]: Start accepts. Automaton has 833 states and 1141 transitions. Word has length 51 [2022-03-20 12:04:30,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 12:04:30,293 INFO L478 AbstractCegarLoop]: Abstraction has 833 states and 1141 transitions. [2022-03-20 12:04:30,294 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.25) internal successors, (39), 6 states have internal predecessors, (39), 2 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2022-03-20 12:04:30,294 INFO L276 IsEmpty]: Start isEmpty. Operand 833 states and 1141 transitions. [2022-03-20 12:04:30,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-03-20 12:04:30,295 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 12:04:30,295 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 12:04:30,295 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-03-20 12:04:30,295 INFO L403 AbstractCegarLoop]: === Iteration 19 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 12:04:30,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 12:04:30,296 INFO L85 PathProgramCache]: Analyzing trace with hash 1955463855, now seen corresponding path program 1 times [2022-03-20 12:04:30,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 12:04:30,296 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397960622] [2022-03-20 12:04:30,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 12:04:30,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 12:04:30,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:30,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 12:04:30,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:30,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 12:04:30,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:30,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 12:04:30,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:30,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-20 12:04:30,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:30,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-20 12:04:30,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:30,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 12:04:30,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:30,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 12:04:30,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 12:04:30,505 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397960622] [2022-03-20 12:04:30,505 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1397960622] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 12:04:30,505 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 12:04:30,505 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-03-20 12:04:30,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800956753] [2022-03-20 12:04:30,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 12:04:30,505 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-03-20 12:04:30,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 12:04:30,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-03-20 12:04:30,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2022-03-20 12:04:30,506 INFO L87 Difference]: Start difference. First operand 833 states and 1141 transitions. Second operand has 13 states, 13 states have (on average 3.0) internal successors, (39), 7 states have internal predecessors, (39), 3 states have call successors, (8), 8 states have call predecessors, (8), 4 states have return successors, (6), 5 states have call predecessors, (6), 2 states have call successors, (6) [2022-03-20 12:04:32,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 12:04:32,705 INFO L93 Difference]: Finished difference Result 963 states and 1362 transitions. [2022-03-20 12:04:32,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-20 12:04:32,705 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 7 states have internal predecessors, (39), 3 states have call successors, (8), 8 states have call predecessors, (8), 4 states have return successors, (6), 5 states have call predecessors, (6), 2 states have call successors, (6) Word has length 53 [2022-03-20 12:04:32,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 12:04:32,709 INFO L225 Difference]: With dead ends: 963 [2022-03-20 12:04:32,709 INFO L226 Difference]: Without dead ends: 957 [2022-03-20 12:04:32,709 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=106, Invalid=274, Unknown=0, NotChecked=0, Total=380 [2022-03-20 12:04:32,710 INFO L913 BasicCegarLoop]: 653 mSDtfsCounter, 1943 mSDsluCounter, 941 mSDsCounter, 0 mSdLazyCounter, 2618 mSolverCounterSat, 647 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1969 SdHoareTripleChecker+Valid, 1594 SdHoareTripleChecker+Invalid, 3265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 647 IncrementalHoareTripleChecker+Valid, 2618 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-03-20 12:04:32,710 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1969 Valid, 1594 Invalid, 3265 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [647 Valid, 2618 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-03-20 12:04:32,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 957 states. [2022-03-20 12:04:32,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 957 to 833. [2022-03-20 12:04:32,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 833 states, 652 states have (on average 1.361963190184049) internal successors, (888), 665 states have internal predecessors, (888), 111 states have call successors, (111), 51 states have call predecessors, (111), 69 states have return successors, (141), 124 states have call predecessors, (141), 105 states have call successors, (141) [2022-03-20 12:04:32,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 833 states to 833 states and 1140 transitions. [2022-03-20 12:04:32,769 INFO L78 Accepts]: Start accepts. Automaton has 833 states and 1140 transitions. Word has length 53 [2022-03-20 12:04:32,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 12:04:32,769 INFO L478 AbstractCegarLoop]: Abstraction has 833 states and 1140 transitions. [2022-03-20 12:04:32,769 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 7 states have internal predecessors, (39), 3 states have call successors, (8), 8 states have call predecessors, (8), 4 states have return successors, (6), 5 states have call predecessors, (6), 2 states have call successors, (6) [2022-03-20 12:04:32,769 INFO L276 IsEmpty]: Start isEmpty. Operand 833 states and 1140 transitions. [2022-03-20 12:04:32,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-03-20 12:04:32,770 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 12:04:32,771 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 12:04:32,771 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-03-20 12:04:32,771 INFO L403 AbstractCegarLoop]: === Iteration 20 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 12:04:32,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 12:04:32,771 INFO L85 PathProgramCache]: Analyzing trace with hash -1151246814, now seen corresponding path program 1 times [2022-03-20 12:04:32,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 12:04:32,771 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320951502] [2022-03-20 12:04:32,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 12:04:32,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 12:04:32,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:32,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 12:04:32,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:32,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 12:04:32,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:32,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 12:04:32,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:32,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-03-20 12:04:32,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:32,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-20 12:04:32,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:32,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 12:04:32,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 12:04:32,910 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320951502] [2022-03-20 12:04:32,910 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1320951502] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 12:04:32,910 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 12:04:32,910 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-03-20 12:04:32,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784856455] [2022-03-20 12:04:32,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 12:04:32,910 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-20 12:04:32,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 12:04:32,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-20 12:04:32,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-03-20 12:04:32,911 INFO L87 Difference]: Start difference. First operand 833 states and 1140 transitions. Second operand has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 5 states have internal predecessors, (40), 3 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2022-03-20 12:04:34,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 12:04:34,334 INFO L93 Difference]: Finished difference Result 967 states and 1365 transitions. [2022-03-20 12:04:34,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-20 12:04:34,342 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 5 states have internal predecessors, (40), 3 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) Word has length 52 [2022-03-20 12:04:34,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 12:04:34,345 INFO L225 Difference]: With dead ends: 967 [2022-03-20 12:04:34,346 INFO L226 Difference]: Without dead ends: 931 [2022-03-20 12:04:34,346 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=86, Invalid=186, Unknown=0, NotChecked=0, Total=272 [2022-03-20 12:04:34,347 INFO L913 BasicCegarLoop]: 656 mSDtfsCounter, 1920 mSDsluCounter, 601 mSDsCounter, 0 mSdLazyCounter, 1466 mSolverCounterSat, 583 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1935 SdHoareTripleChecker+Valid, 1257 SdHoareTripleChecker+Invalid, 2049 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 583 IncrementalHoareTripleChecker+Valid, 1466 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-03-20 12:04:34,347 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1935 Valid, 1257 Invalid, 2049 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [583 Valid, 1466 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-03-20 12:04:34,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 931 states. [2022-03-20 12:04:34,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 931 to 805. [2022-03-20 12:04:34,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 805 states, 629 states have (on average 1.370429252782194) internal successors, (862), 641 states have internal predecessors, (862), 108 states have call successors, (108), 49 states have call predecessors, (108), 67 states have return successors, (138), 121 states have call predecessors, (138), 102 states have call successors, (138) [2022-03-20 12:04:34,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 805 states to 805 states and 1108 transitions. [2022-03-20 12:04:34,413 INFO L78 Accepts]: Start accepts. Automaton has 805 states and 1108 transitions. Word has length 52 [2022-03-20 12:04:34,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 12:04:34,413 INFO L478 AbstractCegarLoop]: Abstraction has 805 states and 1108 transitions. [2022-03-20 12:04:34,413 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 5 states have internal predecessors, (40), 3 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2022-03-20 12:04:34,413 INFO L276 IsEmpty]: Start isEmpty. Operand 805 states and 1108 transitions. [2022-03-20 12:04:34,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-03-20 12:04:34,418 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 12:04:34,418 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 12:04:34,418 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-03-20 12:04:34,418 INFO L403 AbstractCegarLoop]: === Iteration 21 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 12:04:34,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 12:04:34,419 INFO L85 PathProgramCache]: Analyzing trace with hash -437720056, now seen corresponding path program 1 times [2022-03-20 12:04:34,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 12:04:34,420 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979123198] [2022-03-20 12:04:34,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 12:04:34,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 12:04:34,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:34,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 12:04:34,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:34,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 12:04:34,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:34,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 12:04:34,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:34,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-20 12:04:34,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:34,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-20 12:04:34,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:34,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 12:04:34,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:34,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 12:04:34,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 12:04:34,640 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979123198] [2022-03-20 12:04:34,640 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [979123198] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 12:04:34,640 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 12:04:34,640 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-03-20 12:04:34,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595240998] [2022-03-20 12:04:34,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 12:04:34,641 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-03-20 12:04:34,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 12:04:34,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-03-20 12:04:34,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2022-03-20 12:04:34,642 INFO L87 Difference]: Start difference. First operand 805 states and 1108 transitions. Second operand has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 7 states have internal predecessors, (40), 3 states have call successors, (8), 8 states have call predecessors, (8), 4 states have return successors, (6), 5 states have call predecessors, (6), 2 states have call successors, (6) [2022-03-20 12:04:36,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 12:04:36,381 INFO L93 Difference]: Finished difference Result 933 states and 1327 transitions. [2022-03-20 12:04:36,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-20 12:04:36,382 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 7 states have internal predecessors, (40), 3 states have call successors, (8), 8 states have call predecessors, (8), 4 states have return successors, (6), 5 states have call predecessors, (6), 2 states have call successors, (6) Word has length 54 [2022-03-20 12:04:36,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 12:04:36,396 INFO L225 Difference]: With dead ends: 933 [2022-03-20 12:04:36,396 INFO L226 Difference]: Without dead ends: 927 [2022-03-20 12:04:36,397 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=106, Invalid=274, Unknown=0, NotChecked=0, Total=380 [2022-03-20 12:04:36,398 INFO L913 BasicCegarLoop]: 624 mSDtfsCounter, 2275 mSDsluCounter, 621 mSDsCounter, 0 mSdLazyCounter, 1474 mSolverCounterSat, 828 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2301 SdHoareTripleChecker+Valid, 1245 SdHoareTripleChecker+Invalid, 2302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 828 IncrementalHoareTripleChecker+Valid, 1474 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-03-20 12:04:36,399 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [2301 Valid, 1245 Invalid, 2302 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [828 Valid, 1474 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-03-20 12:04:36,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 927 states. [2022-03-20 12:04:36,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 927 to 805. [2022-03-20 12:04:36,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 805 states, 629 states have (on average 1.368839427662957) internal successors, (861), 641 states have internal predecessors, (861), 108 states have call successors, (108), 49 states have call predecessors, (108), 67 states have return successors, (138), 121 states have call predecessors, (138), 102 states have call successors, (138) [2022-03-20 12:04:36,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 805 states to 805 states and 1107 transitions. [2022-03-20 12:04:36,476 INFO L78 Accepts]: Start accepts. Automaton has 805 states and 1107 transitions. Word has length 54 [2022-03-20 12:04:36,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 12:04:36,476 INFO L478 AbstractCegarLoop]: Abstraction has 805 states and 1107 transitions. [2022-03-20 12:04:36,476 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 7 states have internal predecessors, (40), 3 states have call successors, (8), 8 states have call predecessors, (8), 4 states have return successors, (6), 5 states have call predecessors, (6), 2 states have call successors, (6) [2022-03-20 12:04:36,476 INFO L276 IsEmpty]: Start isEmpty. Operand 805 states and 1107 transitions. [2022-03-20 12:04:36,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-03-20 12:04:36,479 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 12:04:36,479 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 12:04:36,479 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-03-20 12:04:36,479 INFO L403 AbstractCegarLoop]: === Iteration 22 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 12:04:36,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 12:04:36,479 INFO L85 PathProgramCache]: Analyzing trace with hash -1268427453, now seen corresponding path program 1 times [2022-03-20 12:04:36,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 12:04:36,479 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37187164] [2022-03-20 12:04:36,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 12:04:36,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 12:04:36,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:36,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 12:04:36,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:36,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 12:04:36,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:36,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 12:04:36,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:36,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-20 12:04:36,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:36,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-20 12:04:36,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:36,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 12:04:36,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:36,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 12:04:36,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 12:04:36,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [37187164] [2022-03-20 12:04:36,707 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [37187164] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 12:04:36,707 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 12:04:36,707 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-03-20 12:04:36,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635118210] [2022-03-20 12:04:36,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 12:04:36,707 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-03-20 12:04:36,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 12:04:36,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-03-20 12:04:36,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2022-03-20 12:04:36,711 INFO L87 Difference]: Start difference. First operand 805 states and 1107 transitions. Second operand has 15 states, 15 states have (on average 2.7333333333333334) internal successors, (41), 7 states have internal predecessors, (41), 3 states have call successors, (8), 8 states have call predecessors, (8), 3 states have return successors, (6), 4 states have call predecessors, (6), 2 states have call successors, (6) [2022-03-20 12:04:39,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 12:04:39,388 INFO L93 Difference]: Finished difference Result 956 states and 1356 transitions. [2022-03-20 12:04:39,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-03-20 12:04:39,388 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.7333333333333334) internal successors, (41), 7 states have internal predecessors, (41), 3 states have call successors, (8), 8 states have call predecessors, (8), 3 states have return successors, (6), 4 states have call predecessors, (6), 2 states have call successors, (6) Word has length 55 [2022-03-20 12:04:39,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 12:04:39,391 INFO L225 Difference]: With dead ends: 956 [2022-03-20 12:04:39,391 INFO L226 Difference]: Without dead ends: 916 [2022-03-20 12:04:39,392 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=62, Invalid=280, Unknown=0, NotChecked=0, Total=342 [2022-03-20 12:04:39,393 INFO L913 BasicCegarLoop]: 675 mSDtfsCounter, 415 mSDsluCounter, 2010 mSDsCounter, 0 mSdLazyCounter, 4990 mSolverCounterSat, 169 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 418 SdHoareTripleChecker+Valid, 2685 SdHoareTripleChecker+Invalid, 5159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 169 IncrementalHoareTripleChecker+Valid, 4990 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-03-20 12:04:39,393 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [418 Valid, 2685 Invalid, 5159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [169 Valid, 4990 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-03-20 12:04:39,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 916 states. [2022-03-20 12:04:39,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 916 to 796. [2022-03-20 12:04:39,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 796 states, 622 states have (on average 1.3520900321543408) internal successors, (841), 634 states have internal predecessors, (841), 106 states have call successors, (106), 49 states have call predecessors, (106), 67 states have return successors, (136), 119 states have call predecessors, (136), 100 states have call successors, (136) [2022-03-20 12:04:39,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 796 states to 796 states and 1083 transitions. [2022-03-20 12:04:39,458 INFO L78 Accepts]: Start accepts. Automaton has 796 states and 1083 transitions. Word has length 55 [2022-03-20 12:04:39,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 12:04:39,459 INFO L478 AbstractCegarLoop]: Abstraction has 796 states and 1083 transitions. [2022-03-20 12:04:39,459 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.7333333333333334) internal successors, (41), 7 states have internal predecessors, (41), 3 states have call successors, (8), 8 states have call predecessors, (8), 3 states have return successors, (6), 4 states have call predecessors, (6), 2 states have call successors, (6) [2022-03-20 12:04:39,459 INFO L276 IsEmpty]: Start isEmpty. Operand 796 states and 1083 transitions. [2022-03-20 12:04:39,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-03-20 12:04:39,461 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 12:04:39,461 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 12:04:39,461 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-03-20 12:04:39,461 INFO L403 AbstractCegarLoop]: === Iteration 23 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 12:04:39,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 12:04:39,461 INFO L85 PathProgramCache]: Analyzing trace with hash -406359554, now seen corresponding path program 1 times [2022-03-20 12:04:39,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 12:04:39,461 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823153941] [2022-03-20 12:04:39,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 12:04:39,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 12:04:39,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:39,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 12:04:39,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:39,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 12:04:39,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:39,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 12:04:39,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:39,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-03-20 12:04:39,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:39,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-20 12:04:39,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:39,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-20 12:04:39,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:39,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 12:04:39,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 12:04:39,652 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823153941] [2022-03-20 12:04:39,652 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1823153941] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 12:04:39,652 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 12:04:39,652 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-03-20 12:04:39,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099269806] [2022-03-20 12:04:39,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 12:04:39,652 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-03-20 12:04:39,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 12:04:39,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-03-20 12:04:39,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2022-03-20 12:04:39,653 INFO L87 Difference]: Start difference. First operand 796 states and 1083 transitions. Second operand has 15 states, 15 states have (on average 2.7333333333333334) internal successors, (41), 7 states have internal predecessors, (41), 2 states have call successors, (8), 7 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 1 states have call successors, (6) [2022-03-20 12:04:41,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 12:04:41,925 INFO L93 Difference]: Finished difference Result 932 states and 1310 transitions. [2022-03-20 12:04:41,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-20 12:04:41,926 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.7333333333333334) internal successors, (41), 7 states have internal predecessors, (41), 2 states have call successors, (8), 7 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 1 states have call successors, (6) Word has length 55 [2022-03-20 12:04:41,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 12:04:41,929 INFO L225 Difference]: With dead ends: 932 [2022-03-20 12:04:41,929 INFO L226 Difference]: Without dead ends: 914 [2022-03-20 12:04:41,929 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2022-03-20 12:04:41,930 INFO L913 BasicCegarLoop]: 670 mSDtfsCounter, 1311 mSDsluCounter, 2030 mSDsCounter, 0 mSdLazyCounter, 4325 mSolverCounterSat, 528 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1313 SdHoareTripleChecker+Valid, 2700 SdHoareTripleChecker+Invalid, 4853 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 528 IncrementalHoareTripleChecker+Valid, 4325 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-03-20 12:04:41,930 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1313 Valid, 2700 Invalid, 4853 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [528 Valid, 4325 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-03-20 12:04:41,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 914 states. [2022-03-20 12:04:41,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 914 to 794. [2022-03-20 12:04:41,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 794 states, 621 states have (on average 1.3510466988727858) internal successors, (839), 633 states have internal predecessors, (839), 105 states have call successors, (105), 49 states have call predecessors, (105), 67 states have return successors, (135), 118 states have call predecessors, (135), 99 states have call successors, (135) [2022-03-20 12:04:41,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 794 states to 794 states and 1079 transitions. [2022-03-20 12:04:41,991 INFO L78 Accepts]: Start accepts. Automaton has 794 states and 1079 transitions. Word has length 55 [2022-03-20 12:04:41,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 12:04:41,992 INFO L478 AbstractCegarLoop]: Abstraction has 794 states and 1079 transitions. [2022-03-20 12:04:41,992 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.7333333333333334) internal successors, (41), 7 states have internal predecessors, (41), 2 states have call successors, (8), 7 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 1 states have call successors, (6) [2022-03-20 12:04:41,992 INFO L276 IsEmpty]: Start isEmpty. Operand 794 states and 1079 transitions. [2022-03-20 12:04:41,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-03-20 12:04:41,993 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 12:04:41,993 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 12:04:41,993 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-03-20 12:04:41,994 INFO L403 AbstractCegarLoop]: === Iteration 24 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 12:04:41,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 12:04:41,994 INFO L85 PathProgramCache]: Analyzing trace with hash 301163047, now seen corresponding path program 1 times [2022-03-20 12:04:41,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 12:04:41,994 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419898722] [2022-03-20 12:04:41,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 12:04:41,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 12:04:42,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:42,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 12:04:42,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:42,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 12:04:42,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:42,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 12:04:42,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:42,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-20 12:04:42,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:42,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-03-20 12:04:42,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:42,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-03-20 12:04:42,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:42,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 12:04:42,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 12:04:42,147 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419898722] [2022-03-20 12:04:42,147 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1419898722] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 12:04:42,147 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 12:04:42,147 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-03-20 12:04:42,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006992593] [2022-03-20 12:04:42,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 12:04:42,148 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-20 12:04:42,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 12:04:42,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-20 12:04:42,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-03-20 12:04:42,148 INFO L87 Difference]: Start difference. First operand 794 states and 1079 transitions. Second operand has 10 states, 10 states have (on average 4.2) internal successors, (42), 4 states have internal predecessors, (42), 3 states have call successors, (8), 8 states have call predecessors, (8), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-03-20 12:04:44,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 12:04:44,100 INFO L93 Difference]: Finished difference Result 979 states and 1361 transitions. [2022-03-20 12:04:44,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-20 12:04:44,101 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.2) internal successors, (42), 4 states have internal predecessors, (42), 3 states have call successors, (8), 8 states have call predecessors, (8), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 56 [2022-03-20 12:04:44,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 12:04:44,104 INFO L225 Difference]: With dead ends: 979 [2022-03-20 12:04:44,104 INFO L226 Difference]: Without dead ends: 936 [2022-03-20 12:04:44,105 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2022-03-20 12:04:44,105 INFO L913 BasicCegarLoop]: 680 mSDtfsCounter, 1870 mSDsluCounter, 621 mSDsCounter, 0 mSdLazyCounter, 2112 mSolverCounterSat, 513 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1880 SdHoareTripleChecker+Valid, 1301 SdHoareTripleChecker+Invalid, 2625 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 513 IncrementalHoareTripleChecker+Valid, 2112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-03-20 12:04:44,105 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1880 Valid, 1301 Invalid, 2625 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [513 Valid, 2112 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-03-20 12:04:44,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 936 states. [2022-03-20 12:04:44,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 936 to 794. [2022-03-20 12:04:44,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 794 states, 621 states have (on average 1.3494363929146538) internal successors, (838), 633 states have internal predecessors, (838), 105 states have call successors, (105), 49 states have call predecessors, (105), 67 states have return successors, (135), 118 states have call predecessors, (135), 99 states have call successors, (135) [2022-03-20 12:04:44,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 794 states to 794 states and 1078 transitions. [2022-03-20 12:04:44,168 INFO L78 Accepts]: Start accepts. Automaton has 794 states and 1078 transitions. Word has length 56 [2022-03-20 12:04:44,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 12:04:44,169 INFO L478 AbstractCegarLoop]: Abstraction has 794 states and 1078 transitions. [2022-03-20 12:04:44,169 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.2) internal successors, (42), 4 states have internal predecessors, (42), 3 states have call successors, (8), 8 states have call predecessors, (8), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-03-20 12:04:44,169 INFO L276 IsEmpty]: Start isEmpty. Operand 794 states and 1078 transitions. [2022-03-20 12:04:44,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-03-20 12:04:44,170 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 12:04:44,170 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 12:04:44,170 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-03-20 12:04:44,170 INFO L403 AbstractCegarLoop]: === Iteration 25 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 12:04:44,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 12:04:44,171 INFO L85 PathProgramCache]: Analyzing trace with hash -979957660, now seen corresponding path program 1 times [2022-03-20 12:04:44,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 12:04:44,171 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022845518] [2022-03-20 12:04:44,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 12:04:44,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 12:04:44,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:44,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 12:04:44,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:44,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 12:04:44,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:44,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 12:04:44,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:44,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-03-20 12:04:44,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:44,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-20 12:04:44,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:44,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-20 12:04:44,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:44,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 12:04:44,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 12:04:44,400 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022845518] [2022-03-20 12:04:44,400 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1022845518] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 12:04:44,400 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 12:04:44,400 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-03-20 12:04:44,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146150778] [2022-03-20 12:04:44,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 12:04:44,401 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-03-20 12:04:44,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 12:04:44,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-03-20 12:04:44,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2022-03-20 12:04:44,401 INFO L87 Difference]: Start difference. First operand 794 states and 1078 transitions. Second operand has 15 states, 15 states have (on average 2.8) internal successors, (42), 7 states have internal predecessors, (42), 2 states have call successors, (8), 7 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 1 states have call successors, (6) [2022-03-20 12:04:47,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 12:04:47,133 INFO L93 Difference]: Finished difference Result 927 states and 1302 transitions. [2022-03-20 12:04:47,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-20 12:04:47,134 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.8) internal successors, (42), 7 states have internal predecessors, (42), 2 states have call successors, (8), 7 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 1 states have call successors, (6) Word has length 56 [2022-03-20 12:04:47,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 12:04:47,137 INFO L225 Difference]: With dead ends: 927 [2022-03-20 12:04:47,137 INFO L226 Difference]: Without dead ends: 909 [2022-03-20 12:04:47,137 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2022-03-20 12:04:47,137 INFO L913 BasicCegarLoop]: 653 mSDtfsCounter, 656 mSDsluCounter, 1958 mSDsCounter, 0 mSdLazyCounter, 5084 mSolverCounterSat, 268 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 658 SdHoareTripleChecker+Valid, 2611 SdHoareTripleChecker+Invalid, 5352 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 268 IncrementalHoareTripleChecker+Valid, 5084 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-03-20 12:04:47,138 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [658 Valid, 2611 Invalid, 5352 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [268 Valid, 5084 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-03-20 12:04:47,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 909 states. [2022-03-20 12:04:47,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 909 to 789. [2022-03-20 12:04:47,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 789 states, 618 states have (on average 1.3495145631067962) internal successors, (834), 630 states have internal predecessors, (834), 104 states have call successors, (104), 49 states have call predecessors, (104), 66 states have return successors, (133), 116 states have call predecessors, (133), 98 states have call successors, (133) [2022-03-20 12:04:47,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 789 states to 789 states and 1071 transitions. [2022-03-20 12:04:47,213 INFO L78 Accepts]: Start accepts. Automaton has 789 states and 1071 transitions. Word has length 56 [2022-03-20 12:04:47,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 12:04:47,213 INFO L478 AbstractCegarLoop]: Abstraction has 789 states and 1071 transitions. [2022-03-20 12:04:47,213 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.8) internal successors, (42), 7 states have internal predecessors, (42), 2 states have call successors, (8), 7 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 1 states have call successors, (6) [2022-03-20 12:04:47,213 INFO L276 IsEmpty]: Start isEmpty. Operand 789 states and 1071 transitions. [2022-03-20 12:04:47,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-03-20 12:04:47,214 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 12:04:47,215 INFO L499 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 12:04:47,215 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-03-20 12:04:47,215 INFO L403 AbstractCegarLoop]: === Iteration 26 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 12:04:47,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 12:04:47,215 INFO L85 PathProgramCache]: Analyzing trace with hash -1342046640, now seen corresponding path program 1 times [2022-03-20 12:04:47,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 12:04:47,215 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998902938] [2022-03-20 12:04:47,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 12:04:47,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 12:04:47,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:47,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 12:04:47,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:47,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 12:04:47,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:47,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 12:04:47,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:47,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-03-20 12:04:47,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:47,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-03-20 12:04:47,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:47,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-20 12:04:47,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:47,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 12:04:47,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:47,351 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 12:04:47,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 12:04:47,351 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998902938] [2022-03-20 12:04:47,351 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [998902938] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 12:04:47,351 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 12:04:47,351 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-03-20 12:04:47,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895680194] [2022-03-20 12:04:47,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 12:04:47,352 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-20 12:04:47,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 12:04:47,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-20 12:04:47,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2022-03-20 12:04:47,353 INFO L87 Difference]: Start difference. First operand 789 states and 1071 transitions. Second operand has 11 states, 11 states have (on average 4.909090909090909) internal successors, (54), 5 states have internal predecessors, (54), 3 states have call successors, (12), 9 states have call predecessors, (12), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-03-20 12:04:48,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 12:04:48,652 INFO L93 Difference]: Finished difference Result 1224 states and 1667 transitions. [2022-03-20 12:04:48,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-20 12:04:48,653 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.909090909090909) internal successors, (54), 5 states have internal predecessors, (54), 3 states have call successors, (12), 9 states have call predecessors, (12), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 73 [2022-03-20 12:04:48,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 12:04:48,656 INFO L225 Difference]: With dead ends: 1224 [2022-03-20 12:04:48,656 INFO L226 Difference]: Without dead ends: 778 [2022-03-20 12:04:48,657 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=93, Invalid=179, Unknown=0, NotChecked=0, Total=272 [2022-03-20 12:04:48,658 INFO L913 BasicCegarLoop]: 530 mSDtfsCounter, 1719 mSDsluCounter, 416 mSDsCounter, 0 mSdLazyCounter, 1167 mSolverCounterSat, 624 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1719 SdHoareTripleChecker+Valid, 946 SdHoareTripleChecker+Invalid, 1791 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 624 IncrementalHoareTripleChecker+Valid, 1167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-03-20 12:04:48,658 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1719 Valid, 946 Invalid, 1791 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [624 Valid, 1167 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-03-20 12:04:48,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 778 states. [2022-03-20 12:04:48,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 778 to 778. [2022-03-20 12:04:48,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 778 states, 609 states have (on average 1.341543513957307) internal successors, (817), 620 states have internal predecessors, (817), 103 states have call successors, (103), 49 states have call predecessors, (103), 65 states have return successors, (122), 115 states have call predecessors, (122), 97 states have call successors, (122) [2022-03-20 12:04:48,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 778 states to 778 states and 1042 transitions. [2022-03-20 12:04:48,753 INFO L78 Accepts]: Start accepts. Automaton has 778 states and 1042 transitions. Word has length 73 [2022-03-20 12:04:48,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 12:04:48,753 INFO L478 AbstractCegarLoop]: Abstraction has 778 states and 1042 transitions. [2022-03-20 12:04:48,753 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.909090909090909) internal successors, (54), 5 states have internal predecessors, (54), 3 states have call successors, (12), 9 states have call predecessors, (12), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-03-20 12:04:48,754 INFO L276 IsEmpty]: Start isEmpty. Operand 778 states and 1042 transitions. [2022-03-20 12:04:48,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-03-20 12:04:48,755 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 12:04:48,755 INFO L499 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 12:04:48,755 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-03-20 12:04:48,755 INFO L403 AbstractCegarLoop]: === Iteration 27 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 12:04:48,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 12:04:48,756 INFO L85 PathProgramCache]: Analyzing trace with hash 687939260, now seen corresponding path program 1 times [2022-03-20 12:04:48,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 12:04:48,756 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026956929] [2022-03-20 12:04:48,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 12:04:48,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 12:04:48,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:48,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 12:04:48,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:48,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 12:04:48,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:48,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 12:04:48,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:48,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-03-20 12:04:48,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:48,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-03-20 12:04:48,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:48,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-20 12:04:48,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:48,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 12:04:48,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:48,927 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 12:04:48,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 12:04:48,927 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026956929] [2022-03-20 12:04:48,927 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1026956929] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 12:04:48,927 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1728718843] [2022-03-20 12:04:48,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 12:04:48,928 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 12:04:48,928 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 12:04:48,929 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-20 12:04:48,944 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-03-20 12:04:49,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:49,133 INFO L263 TraceCheckSpWp]: Trace formula consists of 837 conjuncts, 6 conjunts are in the unsatisfiable core [2022-03-20 12:04:49,141 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 12:04:49,509 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 12:04:49,509 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 12:04:49,756 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 12:04:49,756 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1728718843] provided 1 perfect and 1 imperfect interpolant sequences [2022-03-20 12:04:49,757 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-03-20 12:04:49,757 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9, 5] total 15 [2022-03-20 12:04:49,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143375398] [2022-03-20 12:04:49,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 12:04:49,757 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-20 12:04:49,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 12:04:49,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-20 12:04:49,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2022-03-20 12:04:49,758 INFO L87 Difference]: Start difference. First operand 778 states and 1042 transitions. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 4 states have call successors, (12), 4 states have call predecessors, (12), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-03-20 12:04:50,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 12:04:50,252 INFO L93 Difference]: Finished difference Result 1087 states and 1442 transitions. [2022-03-20 12:04:50,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-20 12:04:50,253 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 4 states have call successors, (12), 4 states have call predecessors, (12), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 74 [2022-03-20 12:04:50,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 12:04:50,262 INFO L225 Difference]: With dead ends: 1087 [2022-03-20 12:04:50,262 INFO L226 Difference]: Without dead ends: 923 [2022-03-20 12:04:50,264 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 151 SyntacticMatches, 4 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2022-03-20 12:04:50,265 INFO L913 BasicCegarLoop]: 672 mSDtfsCounter, 772 mSDsluCounter, 887 mSDsCounter, 0 mSdLazyCounter, 412 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 778 SdHoareTripleChecker+Valid, 1559 SdHoareTripleChecker+Invalid, 455 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 412 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-20 12:04:50,265 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [778 Valid, 1559 Invalid, 455 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 412 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-20 12:04:50,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 923 states. [2022-03-20 12:04:50,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 923 to 816. [2022-03-20 12:04:50,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 816 states, 640 states have (on average 1.340625) internal successors, (858), 651 states have internal predecessors, (858), 106 states have call successors, (106), 51 states have call predecessors, (106), 69 states have return successors, (128), 120 states have call predecessors, (128), 100 states have call successors, (128) [2022-03-20 12:04:50,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 816 states to 816 states and 1092 transitions. [2022-03-20 12:04:50,360 INFO L78 Accepts]: Start accepts. Automaton has 816 states and 1092 transitions. Word has length 74 [2022-03-20 12:04:50,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 12:04:50,360 INFO L478 AbstractCegarLoop]: Abstraction has 816 states and 1092 transitions. [2022-03-20 12:04:50,360 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 4 states have call successors, (12), 4 states have call predecessors, (12), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-03-20 12:04:50,360 INFO L276 IsEmpty]: Start isEmpty. Operand 816 states and 1092 transitions. [2022-03-20 12:04:50,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-03-20 12:04:50,362 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 12:04:50,362 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 12:04:50,394 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-03-20 12:04:50,583 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-03-20 12:04:50,584 INFO L403 AbstractCegarLoop]: === Iteration 28 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 12:04:50,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 12:04:50,584 INFO L85 PathProgramCache]: Analyzing trace with hash -917115183, now seen corresponding path program 1 times [2022-03-20 12:04:50,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 12:04:50,584 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1878080392] [2022-03-20 12:04:50,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 12:04:50,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 12:04:50,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:50,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 12:04:50,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:50,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 12:04:50,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:50,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 12:04:50,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:50,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-20 12:04:50,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:50,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-20 12:04:50,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:50,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-20 12:04:50,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:50,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-20 12:04:50,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:50,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 12:04:50,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 12:04:50,997 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1878080392] [2022-03-20 12:04:50,997 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1878080392] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 12:04:50,997 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 12:04:50,997 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-20 12:04:50,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270690769] [2022-03-20 12:04:50,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 12:04:50,998 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-20 12:04:50,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 12:04:50,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-20 12:04:50,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=327, Unknown=0, NotChecked=0, Total=380 [2022-03-20 12:04:50,999 INFO L87 Difference]: Start difference. First operand 816 states and 1092 transitions. Second operand has 20 states, 19 states have (on average 2.263157894736842) internal successors, (43), 10 states have internal predecessors, (43), 4 states have call successors, (9), 9 states have call predecessors, (9), 4 states have return successors, (7), 5 states have call predecessors, (7), 3 states have call successors, (7) [2022-03-20 12:04:54,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 12:04:54,468 INFO L93 Difference]: Finished difference Result 842 states and 1120 transitions. [2022-03-20 12:04:54,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-03-20 12:04:54,469 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 2.263157894736842) internal successors, (43), 10 states have internal predecessors, (43), 4 states have call successors, (9), 9 states have call predecessors, (9), 4 states have return successors, (7), 5 states have call predecessors, (7), 3 states have call successors, (7) Word has length 59 [2022-03-20 12:04:54,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 12:04:54,471 INFO L225 Difference]: With dead ends: 842 [2022-03-20 12:04:54,471 INFO L226 Difference]: Without dead ends: 817 [2022-03-20 12:04:54,472 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=99, Invalid=603, Unknown=0, NotChecked=0, Total=702 [2022-03-20 12:04:54,472 INFO L913 BasicCegarLoop]: 565 mSDtfsCounter, 1662 mSDsluCounter, 1735 mSDsCounter, 0 mSdLazyCounter, 5876 mSolverCounterSat, 591 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1665 SdHoareTripleChecker+Valid, 2300 SdHoareTripleChecker+Invalid, 6467 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 591 IncrementalHoareTripleChecker+Valid, 5876 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-03-20 12:04:54,473 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1665 Valid, 2300 Invalid, 6467 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [591 Valid, 5876 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2022-03-20 12:04:54,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 817 states. [2022-03-20 12:04:54,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 817 to 815. [2022-03-20 12:04:54,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 815 states, 639 states have (on average 1.325508607198748) internal successors, (847), 650 states have internal predecessors, (847), 106 states have call successors, (106), 51 states have call predecessors, (106), 69 states have return successors, (128), 120 states have call predecessors, (128), 100 states have call successors, (128) [2022-03-20 12:04:54,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 815 states to 815 states and 1081 transitions. [2022-03-20 12:04:54,562 INFO L78 Accepts]: Start accepts. Automaton has 815 states and 1081 transitions. Word has length 59 [2022-03-20 12:04:54,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 12:04:54,562 INFO L478 AbstractCegarLoop]: Abstraction has 815 states and 1081 transitions. [2022-03-20 12:04:54,563 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 2.263157894736842) internal successors, (43), 10 states have internal predecessors, (43), 4 states have call successors, (9), 9 states have call predecessors, (9), 4 states have return successors, (7), 5 states have call predecessors, (7), 3 states have call successors, (7) [2022-03-20 12:04:54,563 INFO L276 IsEmpty]: Start isEmpty. Operand 815 states and 1081 transitions. [2022-03-20 12:04:54,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-03-20 12:04:54,565 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 12:04:54,565 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 12:04:54,565 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-03-20 12:04:54,565 INFO L403 AbstractCegarLoop]: === Iteration 29 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 12:04:54,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 12:04:54,565 INFO L85 PathProgramCache]: Analyzing trace with hash 1794647803, now seen corresponding path program 1 times [2022-03-20 12:04:54,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 12:04:54,566 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774966910] [2022-03-20 12:04:54,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 12:04:54,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 12:04:54,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:54,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 12:04:54,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:54,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 12:04:54,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:54,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 12:04:54,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:54,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-20 12:04:54,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:54,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 12:04:54,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:54,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-20 12:04:54,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:54,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 12:04:54,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 12:04:54,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774966910] [2022-03-20 12:04:54,905 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1774966910] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 12:04:54,906 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 12:04:54,906 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-03-20 12:04:54,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340548079] [2022-03-20 12:04:54,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 12:04:54,906 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-03-20 12:04:54,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 12:04:54,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-03-20 12:04:54,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2022-03-20 12:04:54,907 INFO L87 Difference]: Start difference. First operand 815 states and 1081 transitions. Second operand has 16 states, 16 states have (on average 2.75) internal successors, (44), 8 states have internal predecessors, (44), 2 states have call successors, (8), 7 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 1 states have call successors, (6) [2022-03-20 12:04:57,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 12:04:57,806 INFO L93 Difference]: Finished difference Result 832 states and 1099 transitions. [2022-03-20 12:04:57,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-03-20 12:04:57,807 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.75) internal successors, (44), 8 states have internal predecessors, (44), 2 states have call successors, (8), 7 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 1 states have call successors, (6) Word has length 58 [2022-03-20 12:04:57,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 12:04:57,810 INFO L225 Difference]: With dead ends: 832 [2022-03-20 12:04:57,810 INFO L226 Difference]: Without dead ends: 812 [2022-03-20 12:04:57,810 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2022-03-20 12:04:57,811 INFO L913 BasicCegarLoop]: 576 mSDtfsCounter, 941 mSDsluCounter, 1548 mSDsCounter, 0 mSdLazyCounter, 4967 mSolverCounterSat, 336 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 943 SdHoareTripleChecker+Valid, 2124 SdHoareTripleChecker+Invalid, 5303 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 336 IncrementalHoareTripleChecker+Valid, 4967 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-03-20 12:04:57,811 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [943 Valid, 2124 Invalid, 5303 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [336 Valid, 4967 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-03-20 12:04:57,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 812 states. [2022-03-20 12:04:57,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 812 to 812. [2022-03-20 12:04:57,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 812 states, 637 states have (on average 1.3249607535321821) internal successors, (844), 648 states have internal predecessors, (844), 105 states have call successors, (105), 51 states have call predecessors, (105), 69 states have return successors, (127), 119 states have call predecessors, (127), 99 states have call successors, (127) [2022-03-20 12:04:57,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 812 states to 812 states and 1076 transitions. [2022-03-20 12:04:57,905 INFO L78 Accepts]: Start accepts. Automaton has 812 states and 1076 transitions. Word has length 58 [2022-03-20 12:04:57,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 12:04:57,905 INFO L478 AbstractCegarLoop]: Abstraction has 812 states and 1076 transitions. [2022-03-20 12:04:57,905 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.75) internal successors, (44), 8 states have internal predecessors, (44), 2 states have call successors, (8), 7 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 1 states have call successors, (6) [2022-03-20 12:04:57,905 INFO L276 IsEmpty]: Start isEmpty. Operand 812 states and 1076 transitions. [2022-03-20 12:04:57,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-03-20 12:04:57,907 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 12:04:57,907 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 12:04:57,907 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-03-20 12:04:57,907 INFO L403 AbstractCegarLoop]: === Iteration 30 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 12:04:57,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 12:04:57,908 INFO L85 PathProgramCache]: Analyzing trace with hash 1644249478, now seen corresponding path program 1 times [2022-03-20 12:04:57,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 12:04:57,908 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922456112] [2022-03-20 12:04:57,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 12:04:57,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 12:04:57,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:57,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 12:04:57,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:58,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 12:04:58,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:58,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 12:04:58,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:58,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-20 12:04:58,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:58,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-20 12:04:58,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:58,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-20 12:04:58,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:58,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 12:04:58,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 12:04:58,164 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922456112] [2022-03-20 12:04:58,164 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1922456112] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 12:04:58,164 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 12:04:58,164 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-03-20 12:04:58,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251152908] [2022-03-20 12:04:58,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 12:04:58,165 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-03-20 12:04:58,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 12:04:58,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-03-20 12:04:58,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2022-03-20 12:04:58,166 INFO L87 Difference]: Start difference. First operand 812 states and 1076 transitions. Second operand has 16 states, 16 states have (on average 2.8125) internal successors, (45), 8 states have internal predecessors, (45), 3 states have call successors, (8), 8 states have call predecessors, (8), 3 states have return successors, (6), 4 states have call predecessors, (6), 2 states have call successors, (6) [2022-03-20 12:05:00,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 12:05:00,809 INFO L93 Difference]: Finished difference Result 865 states and 1131 transitions. [2022-03-20 12:05:00,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-03-20 12:05:00,809 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.8125) internal successors, (45), 8 states have internal predecessors, (45), 3 states have call successors, (8), 8 states have call predecessors, (8), 3 states have return successors, (6), 4 states have call predecessors, (6), 2 states have call successors, (6) Word has length 59 [2022-03-20 12:05:00,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 12:05:00,812 INFO L225 Difference]: With dead ends: 865 [2022-03-20 12:05:00,812 INFO L226 Difference]: Without dead ends: 800 [2022-03-20 12:05:00,813 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=92, Invalid=414, Unknown=0, NotChecked=0, Total=506 [2022-03-20 12:05:00,814 INFO L913 BasicCegarLoop]: 552 mSDtfsCounter, 962 mSDsluCounter, 1232 mSDsCounter, 0 mSdLazyCounter, 4119 mSolverCounterSat, 351 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 965 SdHoareTripleChecker+Valid, 1784 SdHoareTripleChecker+Invalid, 4470 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 351 IncrementalHoareTripleChecker+Valid, 4119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-03-20 12:05:00,814 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [965 Valid, 1784 Invalid, 4470 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [351 Valid, 4119 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-03-20 12:05:00,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 800 states. [2022-03-20 12:05:00,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 800 to 800. [2022-03-20 12:05:00,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 800 states, 628 states have (on average 1.320063694267516) internal successors, (829), 639 states have internal predecessors, (829), 102 states have call successors, (102), 51 states have call predecessors, (102), 69 states have return successors, (124), 116 states have call predecessors, (124), 96 states have call successors, (124) [2022-03-20 12:05:00,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 800 states to 800 states and 1055 transitions. [2022-03-20 12:05:00,908 INFO L78 Accepts]: Start accepts. Automaton has 800 states and 1055 transitions. Word has length 59 [2022-03-20 12:05:00,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 12:05:00,908 INFO L478 AbstractCegarLoop]: Abstraction has 800 states and 1055 transitions. [2022-03-20 12:05:00,908 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.8125) internal successors, (45), 8 states have internal predecessors, (45), 3 states have call successors, (8), 8 states have call predecessors, (8), 3 states have return successors, (6), 4 states have call predecessors, (6), 2 states have call successors, (6) [2022-03-20 12:05:00,909 INFO L276 IsEmpty]: Start isEmpty. Operand 800 states and 1055 transitions. [2022-03-20 12:05:00,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-03-20 12:05:00,912 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 12:05:00,912 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 12:05:00,912 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-03-20 12:05:00,912 INFO L403 AbstractCegarLoop]: === Iteration 31 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 12:05:00,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 12:05:00,913 INFO L85 PathProgramCache]: Analyzing trace with hash -887424146, now seen corresponding path program 1 times [2022-03-20 12:05:00,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 12:05:00,913 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608498062] [2022-03-20 12:05:00,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 12:05:00,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 12:05:00,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:05:00,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 12:05:00,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:05:01,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 12:05:01,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:05:01,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 12:05:01,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:05:01,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-20 12:05:01,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:05:01,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-20 12:05:01,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:05:01,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-20 12:05:01,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:05:01,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-20 12:05:01,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:05:01,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 12:05:01,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 12:05:01,145 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608498062] [2022-03-20 12:05:01,145 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1608498062] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 12:05:01,145 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 12:05:01,145 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-03-20 12:05:01,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986083746] [2022-03-20 12:05:01,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 12:05:01,145 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-20 12:05:01,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 12:05:01,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-20 12:05:01,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-03-20 12:05:01,146 INFO L87 Difference]: Start difference. First operand 800 states and 1055 transitions. Second operand has 11 states, 11 states have (on average 4.0) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-03-20 12:05:02,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 12:05:02,820 INFO L93 Difference]: Finished difference Result 950 states and 1263 transitions. [2022-03-20 12:05:02,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-20 12:05:02,821 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.0) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 60 [2022-03-20 12:05:02,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 12:05:02,824 INFO L225 Difference]: With dead ends: 950 [2022-03-20 12:05:02,824 INFO L226 Difference]: Without dead ends: 845 [2022-03-20 12:05:02,824 INFO L912 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 [2022-03-20 12:05:02,825 INFO L913 BasicCegarLoop]: 540 mSDtfsCounter, 1602 mSDsluCounter, 558 mSDsCounter, 0 mSdLazyCounter, 1360 mSolverCounterSat, 598 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1604 SdHoareTripleChecker+Valid, 1098 SdHoareTripleChecker+Invalid, 1958 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 598 IncrementalHoareTripleChecker+Valid, 1360 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-03-20 12:05:02,825 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1604 Valid, 1098 Invalid, 1958 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [598 Valid, 1360 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-03-20 12:05:02,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 845 states. [2022-03-20 12:05:02,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 845 to 807. [2022-03-20 12:05:02,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 807 states, 633 states have (on average 1.320695102685624) internal successors, (836), 645 states have internal predecessors, (836), 103 states have call successors, (103), 51 states have call predecessors, (103), 70 states have return successors, (131), 117 states have call predecessors, (131), 97 states have call successors, (131) [2022-03-20 12:05:02,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 807 states to 807 states and 1070 transitions. [2022-03-20 12:05:02,909 INFO L78 Accepts]: Start accepts. Automaton has 807 states and 1070 transitions. Word has length 60 [2022-03-20 12:05:02,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 12:05:02,909 INFO L478 AbstractCegarLoop]: Abstraction has 807 states and 1070 transitions. [2022-03-20 12:05:02,909 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.0) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-03-20 12:05:02,910 INFO L276 IsEmpty]: Start isEmpty. Operand 807 states and 1070 transitions. [2022-03-20 12:05:02,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-03-20 12:05:02,911 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 12:05:02,912 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 12:05:02,912 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-03-20 12:05:02,912 INFO L403 AbstractCegarLoop]: === Iteration 32 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 12:05:02,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 12:05:02,912 INFO L85 PathProgramCache]: Analyzing trace with hash 1397439309, now seen corresponding path program 1 times [2022-03-20 12:05:02,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 12:05:02,912 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241722337] [2022-03-20 12:05:02,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 12:05:02,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 12:05:02,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:05:02,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 12:05:02,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:05:03,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 12:05:03,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:05:03,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 12:05:03,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:05:03,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-20 12:05:03,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:05:03,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-20 12:05:03,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:05:03,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-20 12:05:03,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:05:03,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-20 12:05:03,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:05:03,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 12:05:03,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 12:05:03,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241722337] [2022-03-20 12:05:03,160 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1241722337] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 12:05:03,160 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 12:05:03,160 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-03-20 12:05:03,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081389861] [2022-03-20 12:05:03,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 12:05:03,160 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-03-20 12:05:03,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 12:05:03,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-03-20 12:05:03,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2022-03-20 12:05:03,161 INFO L87 Difference]: Start difference. First operand 807 states and 1070 transitions. Second operand has 16 states, 16 states have (on average 2.75) internal successors, (44), 7 states have internal predecessors, (44), 3 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 4 states have call predecessors, (7), 2 states have call successors, (7) [2022-03-20 12:05:05,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 12:05:05,580 INFO L93 Difference]: Finished difference Result 829 states and 1093 transitions. [2022-03-20 12:05:05,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-03-20 12:05:05,580 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.75) internal successors, (44), 7 states have internal predecessors, (44), 3 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 4 states have call predecessors, (7), 2 states have call successors, (7) Word has length 60 [2022-03-20 12:05:05,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 12:05:05,583 INFO L225 Difference]: With dead ends: 829 [2022-03-20 12:05:05,583 INFO L226 Difference]: Without dead ends: 805 [2022-03-20 12:05:05,584 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2022-03-20 12:05:05,584 INFO L913 BasicCegarLoop]: 558 mSDtfsCounter, 359 mSDsluCounter, 1382 mSDsCounter, 0 mSdLazyCounter, 3976 mSolverCounterSat, 118 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 362 SdHoareTripleChecker+Valid, 1940 SdHoareTripleChecker+Invalid, 4094 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 118 IncrementalHoareTripleChecker+Valid, 3976 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-03-20 12:05:05,584 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [362 Valid, 1940 Invalid, 4094 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [118 Valid, 3976 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-03-20 12:05:05,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 805 states. [2022-03-20 12:05:05,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 805 to 805. [2022-03-20 12:05:05,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 805 states, 632 states have (on average 1.3196202531645569) internal successors, (834), 644 states have internal predecessors, (834), 102 states have call successors, (102), 51 states have call predecessors, (102), 70 states have return successors, (130), 116 states have call predecessors, (130), 96 states have call successors, (130) [2022-03-20 12:05:05,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 805 states to 805 states and 1066 transitions. [2022-03-20 12:05:05,669 INFO L78 Accepts]: Start accepts. Automaton has 805 states and 1066 transitions. Word has length 60 [2022-03-20 12:05:05,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 12:05:05,669 INFO L478 AbstractCegarLoop]: Abstraction has 805 states and 1066 transitions. [2022-03-20 12:05:05,669 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.75) internal successors, (44), 7 states have internal predecessors, (44), 3 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 4 states have call predecessors, (7), 2 states have call successors, (7) [2022-03-20 12:05:05,669 INFO L276 IsEmpty]: Start isEmpty. Operand 805 states and 1066 transitions. [2022-03-20 12:05:05,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-03-20 12:05:05,671 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 12:05:05,671 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 12:05:05,671 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-03-20 12:05:05,671 INFO L403 AbstractCegarLoop]: === Iteration 33 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 12:05:05,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 12:05:05,672 INFO L85 PathProgramCache]: Analyzing trace with hash 303583592, now seen corresponding path program 1 times [2022-03-20 12:05:05,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 12:05:05,672 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916426159] [2022-03-20 12:05:05,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 12:05:05,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 12:05:05,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:05:05,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 12:05:05,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:05:05,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 12:05:05,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:05:05,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 12:05:05,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:05:05,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-20 12:05:05,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:05:05,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-20 12:05:05,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:05:05,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-03-20 12:05:05,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:05:05,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 12:05:05,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 12:05:05,869 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916426159] [2022-03-20 12:05:05,869 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1916426159] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 12:05:05,869 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 12:05:05,869 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-03-20 12:05:05,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736793764] [2022-03-20 12:05:05,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 12:05:05,870 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-20 12:05:05,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 12:05:05,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-20 12:05:05,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2022-03-20 12:05:05,870 INFO L87 Difference]: Start difference. First operand 805 states and 1066 transitions. Second operand has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (8), 8 states have call predecessors, (8), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2022-03-20 12:05:07,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 12:05:07,435 INFO L93 Difference]: Finished difference Result 839 states and 1100 transitions. [2022-03-20 12:05:07,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-20 12:05:07,435 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (8), 8 states have call predecessors, (8), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) Word has length 60 [2022-03-20 12:05:07,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 12:05:07,438 INFO L225 Difference]: With dead ends: 839 [2022-03-20 12:05:07,438 INFO L226 Difference]: Without dead ends: 807 [2022-03-20 12:05:07,439 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2022-03-20 12:05:07,439 INFO L913 BasicCegarLoop]: 538 mSDtfsCounter, 1228 mSDsluCounter, 589 mSDsCounter, 0 mSdLazyCounter, 1751 mSolverCounterSat, 430 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1230 SdHoareTripleChecker+Valid, 1127 SdHoareTripleChecker+Invalid, 2181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 430 IncrementalHoareTripleChecker+Valid, 1751 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-03-20 12:05:07,439 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1230 Valid, 1127 Invalid, 2181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [430 Valid, 1751 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-03-20 12:05:07,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 807 states. [2022-03-20 12:05:07,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 807 to 805. [2022-03-20 12:05:07,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 805 states, 632 states have (on average 1.3180379746835442) internal successors, (833), 644 states have internal predecessors, (833), 102 states have call successors, (102), 51 states have call predecessors, (102), 70 states have return successors, (130), 116 states have call predecessors, (130), 96 states have call successors, (130) [2022-03-20 12:05:07,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 805 states to 805 states and 1065 transitions. [2022-03-20 12:05:07,527 INFO L78 Accepts]: Start accepts. Automaton has 805 states and 1065 transitions. Word has length 60 [2022-03-20 12:05:07,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 12:05:07,528 INFO L478 AbstractCegarLoop]: Abstraction has 805 states and 1065 transitions. [2022-03-20 12:05:07,528 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (8), 8 states have call predecessors, (8), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2022-03-20 12:05:07,528 INFO L276 IsEmpty]: Start isEmpty. Operand 805 states and 1065 transitions. [2022-03-20 12:05:07,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-03-20 12:05:07,530 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 12:05:07,530 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 12:05:07,530 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-03-20 12:05:07,531 INFO L403 AbstractCegarLoop]: === Iteration 34 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 12:05:07,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 12:05:07,531 INFO L85 PathProgramCache]: Analyzing trace with hash 48847047, now seen corresponding path program 1 times [2022-03-20 12:05:07,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 12:05:07,531 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849459003] [2022-03-20 12:05:07,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 12:05:07,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 12:05:07,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:05:07,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 12:05:07,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:05:07,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 12:05:07,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:05:07,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 12:05:07,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:05:07,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-20 12:05:07,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:05:07,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-20 12:05:07,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:05:07,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-03-20 12:05:07,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:05:07,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 12:05:07,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 12:05:07,839 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849459003] [2022-03-20 12:05:07,839 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1849459003] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 12:05:07,839 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 12:05:07,839 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-03-20 12:05:07,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736813719] [2022-03-20 12:05:07,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 12:05:07,840 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-03-20 12:05:07,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 12:05:07,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-03-20 12:05:07,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2022-03-20 12:05:07,840 INFO L87 Difference]: Start difference. First operand 805 states and 1065 transitions. Second operand has 16 states, 16 states have (on average 2.875) internal successors, (46), 8 states have internal predecessors, (46), 3 states have call successors, (8), 8 states have call predecessors, (8), 3 states have return successors, (6), 4 states have call predecessors, (6), 2 states have call successors, (6) [2022-03-20 12:05:10,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 12:05:10,132 INFO L93 Difference]: Finished difference Result 838 states and 1104 transitions. [2022-03-20 12:05:10,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-03-20 12:05:10,133 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.875) internal successors, (46), 8 states have internal predecessors, (46), 3 states have call successors, (8), 8 states have call predecessors, (8), 3 states have return successors, (6), 4 states have call predecessors, (6), 2 states have call successors, (6) Word has length 60 [2022-03-20 12:05:10,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 12:05:10,136 INFO L225 Difference]: With dead ends: 838 [2022-03-20 12:05:10,136 INFO L226 Difference]: Without dead ends: 797 [2022-03-20 12:05:10,137 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=92, Invalid=414, Unknown=0, NotChecked=0, Total=506 [2022-03-20 12:05:10,137 INFO L913 BasicCegarLoop]: 552 mSDtfsCounter, 1278 mSDsluCounter, 1216 mSDsCounter, 0 mSdLazyCounter, 3482 mSolverCounterSat, 447 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1281 SdHoareTripleChecker+Valid, 1768 SdHoareTripleChecker+Invalid, 3929 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 447 IncrementalHoareTripleChecker+Valid, 3482 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-03-20 12:05:10,138 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1281 Valid, 1768 Invalid, 3929 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [447 Valid, 3482 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-03-20 12:05:10,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 797 states. [2022-03-20 12:05:10,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 797 to 797. [2022-03-20 12:05:10,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 797 states, 626 states have (on average 1.3130990415335464) internal successors, (822), 638 states have internal predecessors, (822), 100 states have call successors, (100), 51 states have call predecessors, (100), 70 states have return successors, (128), 114 states have call predecessors, (128), 94 states have call successors, (128) [2022-03-20 12:05:10,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 797 states to 797 states and 1050 transitions. [2022-03-20 12:05:10,227 INFO L78 Accepts]: Start accepts. Automaton has 797 states and 1050 transitions. Word has length 60 [2022-03-20 12:05:10,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 12:05:10,228 INFO L478 AbstractCegarLoop]: Abstraction has 797 states and 1050 transitions. [2022-03-20 12:05:10,228 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.875) internal successors, (46), 8 states have internal predecessors, (46), 3 states have call successors, (8), 8 states have call predecessors, (8), 3 states have return successors, (6), 4 states have call predecessors, (6), 2 states have call successors, (6) [2022-03-20 12:05:10,228 INFO L276 IsEmpty]: Start isEmpty. Operand 797 states and 1050 transitions. [2022-03-20 12:05:10,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-03-20 12:05:10,229 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 12:05:10,230 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 12:05:10,230 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-03-20 12:05:10,230 INFO L403 AbstractCegarLoop]: === Iteration 35 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 12:05:10,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 12:05:10,230 INFO L85 PathProgramCache]: Analyzing trace with hash 330565666, now seen corresponding path program 1 times [2022-03-20 12:05:10,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 12:05:10,230 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362587995] [2022-03-20 12:05:10,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 12:05:10,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 12:05:10,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:05:10,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 12:05:10,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:05:10,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 12:05:10,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:05:10,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 12:05:10,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:05:10,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-20 12:05:10,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:05:10,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-20 12:05:10,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:05:10,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-20 12:05:10,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:05:10,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-03-20 12:05:10,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:05:10,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 12:05:10,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 12:05:10,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1362587995] [2022-03-20 12:05:10,429 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1362587995] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 12:05:10,429 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 12:05:10,429 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-20 12:05:10,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040463562] [2022-03-20 12:05:10,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 12:05:10,430 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-20 12:05:10,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 12:05:10,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-20 12:05:10,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2022-03-20 12:05:10,430 INFO L87 Difference]: Start difference. First operand 797 states and 1050 transitions. Second operand has 12 states, 12 states have (on average 3.75) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-03-20 12:05:12,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 12:05:12,285 INFO L93 Difference]: Finished difference Result 845 states and 1118 transitions. [2022-03-20 12:05:12,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-20 12:05:12,286 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.75) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 61 [2022-03-20 12:05:12,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 12:05:12,288 INFO L225 Difference]: With dead ends: 845 [2022-03-20 12:05:12,288 INFO L226 Difference]: Without dead ends: 811 [2022-03-20 12:05:12,289 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2022-03-20 12:05:12,289 INFO L913 BasicCegarLoop]: 522 mSDtfsCounter, 1213 mSDsluCounter, 773 mSDsCounter, 0 mSdLazyCounter, 1888 mSolverCounterSat, 490 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1215 SdHoareTripleChecker+Valid, 1295 SdHoareTripleChecker+Invalid, 2378 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 490 IncrementalHoareTripleChecker+Valid, 1888 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-03-20 12:05:12,289 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1215 Valid, 1295 Invalid, 2378 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [490 Valid, 1888 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-03-20 12:05:12,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 811 states. [2022-03-20 12:05:12,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 811 to 801. [2022-03-20 12:05:12,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 801 states, 628 states have (on average 1.3121019108280254) internal successors, (824), 642 states have internal predecessors, (824), 100 states have call successors, (100), 51 states have call predecessors, (100), 72 states have return successors, (144), 114 states have call predecessors, (144), 94 states have call successors, (144) [2022-03-20 12:05:12,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 801 states to 801 states and 1068 transitions. [2022-03-20 12:05:12,373 INFO L78 Accepts]: Start accepts. Automaton has 801 states and 1068 transitions. Word has length 61 [2022-03-20 12:05:12,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 12:05:12,373 INFO L478 AbstractCegarLoop]: Abstraction has 801 states and 1068 transitions. [2022-03-20 12:05:12,373 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.75) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-03-20 12:05:12,373 INFO L276 IsEmpty]: Start isEmpty. Operand 801 states and 1068 transitions. [2022-03-20 12:05:12,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-03-20 12:05:12,375 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 12:05:12,375 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 12:05:12,376 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-03-20 12:05:12,376 INFO L403 AbstractCegarLoop]: === Iteration 36 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 12:05:12,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 12:05:12,376 INFO L85 PathProgramCache]: Analyzing trace with hash 1992943065, now seen corresponding path program 1 times [2022-03-20 12:05:12,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 12:05:12,376 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623442655] [2022-03-20 12:05:12,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 12:05:12,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 12:05:12,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:05:12,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 12:05:12,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:05:12,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 12:05:12,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:05:12,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 12:05:12,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:05:12,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-20 12:05:12,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:05:12,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-20 12:05:12,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:05:12,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-20 12:05:12,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:05:12,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 12:05:12,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:05:12,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-20 12:05:12,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:05:12,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 12:05:12,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 12:05:12,711 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623442655] [2022-03-20 12:05:12,711 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1623442655] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 12:05:12,711 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 12:05:12,711 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-20 12:05:12,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419399077] [2022-03-20 12:05:12,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 12:05:12,712 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-20 12:05:12,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 12:05:12,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-20 12:05:12,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=359, Unknown=0, NotChecked=0, Total=420 [2022-03-20 12:05:12,713 INFO L87 Difference]: Start difference. First operand 801 states and 1068 transitions. Second operand has 21 states, 20 states have (on average 2.45) internal successors, (49), 10 states have internal predecessors, (49), 4 states have call successors, (10), 10 states have call predecessors, (10), 4 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) [2022-03-20 12:05:14,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 12:05:14,963 INFO L93 Difference]: Finished difference Result 825 states and 1093 transitions. [2022-03-20 12:05:14,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-03-20 12:05:14,963 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 2.45) internal successors, (49), 10 states have internal predecessors, (49), 4 states have call successors, (10), 10 states have call predecessors, (10), 4 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) Word has length 67 [2022-03-20 12:05:14,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 12:05:14,966 INFO L225 Difference]: With dead ends: 825 [2022-03-20 12:05:14,966 INFO L226 Difference]: Without dead ends: 801 [2022-03-20 12:05:14,967 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=120, Invalid=692, Unknown=0, NotChecked=0, Total=812 [2022-03-20 12:05:14,967 INFO L913 BasicCegarLoop]: 527 mSDtfsCounter, 695 mSDsluCounter, 1717 mSDsCounter, 0 mSdLazyCounter, 4862 mSolverCounterSat, 239 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 697 SdHoareTripleChecker+Valid, 2244 SdHoareTripleChecker+Invalid, 5101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 239 IncrementalHoareTripleChecker+Valid, 4862 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-03-20 12:05:14,967 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [697 Valid, 2244 Invalid, 5101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [239 Valid, 4862 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-03-20 12:05:14,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 801 states. [2022-03-20 12:05:15,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 801 to 799. [2022-03-20 12:05:15,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 799 states, 627 states have (on average 1.3110047846889952) internal successors, (822), 641 states have internal predecessors, (822), 99 states have call successors, (99), 51 states have call predecessors, (99), 72 states have return successors, (143), 113 states have call predecessors, (143), 93 states have call successors, (143) [2022-03-20 12:05:15,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 799 states to 799 states and 1064 transitions. [2022-03-20 12:05:15,054 INFO L78 Accepts]: Start accepts. Automaton has 799 states and 1064 transitions. Word has length 67 [2022-03-20 12:05:15,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 12:05:15,054 INFO L478 AbstractCegarLoop]: Abstraction has 799 states and 1064 transitions. [2022-03-20 12:05:15,054 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 2.45) internal successors, (49), 10 states have internal predecessors, (49), 4 states have call successors, (10), 10 states have call predecessors, (10), 4 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) [2022-03-20 12:05:15,054 INFO L276 IsEmpty]: Start isEmpty. Operand 799 states and 1064 transitions. [2022-03-20 12:05:15,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-03-20 12:05:15,056 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 12:05:15,056 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 12:05:15,056 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-03-20 12:05:15,056 INFO L403 AbstractCegarLoop]: === Iteration 37 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 12:05:15,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 12:05:15,057 INFO L85 PathProgramCache]: Analyzing trace with hash -1749867339, now seen corresponding path program 1 times [2022-03-20 12:05:15,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 12:05:15,057 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403473843] [2022-03-20 12:05:15,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 12:05:15,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 12:05:15,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:05:15,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 12:05:15,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:05:15,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 12:05:15,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:05:15,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 12:05:15,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:05:15,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-20 12:05:15,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:05:15,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-20 12:05:15,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:05:15,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-03-20 12:05:15,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:05:15,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-20 12:05:15,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:05:15,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 12:05:15,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 12:05:15,360 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403473843] [2022-03-20 12:05:15,360 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [403473843] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 12:05:15,360 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 12:05:15,360 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-20 12:05:15,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699301929] [2022-03-20 12:05:15,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 12:05:15,362 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-20 12:05:15,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 12:05:15,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-20 12:05:15,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=327, Unknown=0, NotChecked=0, Total=380 [2022-03-20 12:05:15,364 INFO L87 Difference]: Start difference. First operand 799 states and 1064 transitions. Second operand has 20 states, 19 states have (on average 2.4210526315789473) internal successors, (46), 10 states have internal predecessors, (46), 4 states have call successors, (9), 9 states have call predecessors, (9), 4 states have return successors, (7), 5 states have call predecessors, (7), 3 states have call successors, (7) [2022-03-20 12:05:17,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 12:05:17,833 INFO L93 Difference]: Finished difference Result 823 states and 1089 transitions. [2022-03-20 12:05:17,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-03-20 12:05:17,834 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 2.4210526315789473) internal successors, (46), 10 states have internal predecessors, (46), 4 states have call successors, (9), 9 states have call predecessors, (9), 4 states have return successors, (7), 5 states have call predecessors, (7), 3 states have call successors, (7) Word has length 62 [2022-03-20 12:05:17,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 12:05:17,836 INFO L225 Difference]: With dead ends: 823 [2022-03-20 12:05:17,836 INFO L226 Difference]: Without dead ends: 799 [2022-03-20 12:05:17,837 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=99, Invalid=603, Unknown=0, NotChecked=0, Total=702 [2022-03-20 12:05:17,837 INFO L913 BasicCegarLoop]: 504 mSDtfsCounter, 935 mSDsluCounter, 1511 mSDsCounter, 0 mSdLazyCounter, 4836 mSolverCounterSat, 333 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 938 SdHoareTripleChecker+Valid, 2015 SdHoareTripleChecker+Invalid, 5169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 333 IncrementalHoareTripleChecker+Valid, 4836 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-03-20 12:05:17,838 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [938 Valid, 2015 Invalid, 5169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [333 Valid, 4836 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-03-20 12:05:17,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 799 states. [2022-03-20 12:05:17,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 799 to 797. [2022-03-20 12:05:17,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 797 states, 626 states have (on average 1.3099041533546325) internal successors, (820), 640 states have internal predecessors, (820), 98 states have call successors, (98), 51 states have call predecessors, (98), 72 states have return successors, (142), 112 states have call predecessors, (142), 92 states have call successors, (142) [2022-03-20 12:05:17,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 797 states to 797 states and 1060 transitions. [2022-03-20 12:05:17,917 INFO L78 Accepts]: Start accepts. Automaton has 797 states and 1060 transitions. Word has length 62 [2022-03-20 12:05:17,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 12:05:17,917 INFO L478 AbstractCegarLoop]: Abstraction has 797 states and 1060 transitions. [2022-03-20 12:05:17,917 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 2.4210526315789473) internal successors, (46), 10 states have internal predecessors, (46), 4 states have call successors, (9), 9 states have call predecessors, (9), 4 states have return successors, (7), 5 states have call predecessors, (7), 3 states have call successors, (7) [2022-03-20 12:05:17,918 INFO L276 IsEmpty]: Start isEmpty. Operand 797 states and 1060 transitions. [2022-03-20 12:05:17,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-03-20 12:05:17,920 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 12:05:17,920 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 12:05:17,920 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-03-20 12:05:17,920 INFO L403 AbstractCegarLoop]: === Iteration 38 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 12:05:17,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 12:05:17,921 INFO L85 PathProgramCache]: Analyzing trace with hash -418163084, now seen corresponding path program 1 times [2022-03-20 12:05:17,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 12:05:17,921 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201203325] [2022-03-20 12:05:17,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 12:05:17,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 12:05:17,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:05:18,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 12:05:18,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:05:18,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 12:05:18,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:05:18,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 12:05:18,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:05:18,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-20 12:05:18,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:05:18,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-03-20 12:05:18,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:05:18,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-20 12:05:18,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:05:18,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-20 12:05:18,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:05:18,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 12:05:18,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 12:05:18,269 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201203325] [2022-03-20 12:05:18,270 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [201203325] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 12:05:18,270 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 12:05:18,270 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-20 12:05:18,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548310469] [2022-03-20 12:05:18,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 12:05:18,271 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-20 12:05:18,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 12:05:18,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-20 12:05:18,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=296, Unknown=0, NotChecked=0, Total=342 [2022-03-20 12:05:18,272 INFO L87 Difference]: Start difference. First operand 797 states and 1060 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 9 states have internal predecessors, (47), 2 states have call successors, (9), 8 states have call predecessors, (9), 5 states have return successors, (7), 5 states have call predecessors, (7), 1 states have call successors, (7) [2022-03-20 12:05:20,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 12:05:20,760 INFO L93 Difference]: Finished difference Result 814 states and 1078 transitions. [2022-03-20 12:05:20,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-03-20 12:05:20,761 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 9 states have internal predecessors, (47), 2 states have call successors, (9), 8 states have call predecessors, (9), 5 states have return successors, (7), 5 states have call predecessors, (7), 1 states have call successors, (7) Word has length 63 [2022-03-20 12:05:20,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 12:05:20,763 INFO L225 Difference]: With dead ends: 814 [2022-03-20 12:05:20,764 INFO L226 Difference]: Without dead ends: 792 [2022-03-20 12:05:20,764 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=61, Invalid=401, Unknown=0, NotChecked=0, Total=462 [2022-03-20 12:05:20,764 INFO L913 BasicCegarLoop]: 527 mSDtfsCounter, 600 mSDsluCounter, 1750 mSDsCounter, 0 mSdLazyCounter, 5039 mSolverCounterSat, 208 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 602 SdHoareTripleChecker+Valid, 2277 SdHoareTripleChecker+Invalid, 5247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 208 IncrementalHoareTripleChecker+Valid, 5039 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-03-20 12:05:20,765 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [602 Valid, 2277 Invalid, 5247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [208 Valid, 5039 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-03-20 12:05:20,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 792 states. [2022-03-20 12:05:20,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 792 to 792. [2022-03-20 12:05:20,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 792 states, 623 states have (on average 1.3097913322632424) internal successors, (816), 637 states have internal predecessors, (816), 97 states have call successors, (97), 51 states have call predecessors, (97), 71 states have return successors, (140), 110 states have call predecessors, (140), 91 states have call successors, (140) [2022-03-20 12:05:20,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 792 states to 792 states and 1053 transitions. [2022-03-20 12:05:20,853 INFO L78 Accepts]: Start accepts. Automaton has 792 states and 1053 transitions. Word has length 63 [2022-03-20 12:05:20,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 12:05:20,853 INFO L478 AbstractCegarLoop]: Abstraction has 792 states and 1053 transitions. [2022-03-20 12:05:20,854 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 9 states have internal predecessors, (47), 2 states have call successors, (9), 8 states have call predecessors, (9), 5 states have return successors, (7), 5 states have call predecessors, (7), 1 states have call successors, (7) [2022-03-20 12:05:20,854 INFO L276 IsEmpty]: Start isEmpty. Operand 792 states and 1053 transitions. [2022-03-20 12:05:20,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-03-20 12:05:20,856 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 12:05:20,856 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 12:05:20,856 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-03-20 12:05:20,856 INFO L403 AbstractCegarLoop]: === Iteration 39 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 12:05:20,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 12:05:20,857 INFO L85 PathProgramCache]: Analyzing trace with hash -2020935180, now seen corresponding path program 1 times [2022-03-20 12:05:20,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 12:05:20,857 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295713515] [2022-03-20 12:05:20,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 12:05:20,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 12:05:20,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:05:20,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 12:05:20,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:05:20,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 12:05:20,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:05:20,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 12:05:20,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:05:21,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-20 12:05:21,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:05:21,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-20 12:05:21,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:05:21,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-20 12:05:21,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:05:21,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-20 12:05:21,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:05:21,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 12:05:21,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 12:05:21,150 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295713515] [2022-03-20 12:05:21,150 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1295713515] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 12:05:21,150 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 12:05:21,150 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-20 12:05:21,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569427053] [2022-03-20 12:05:21,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 12:05:21,150 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-20 12:05:21,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 12:05:21,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-20 12:05:21,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=296, Unknown=0, NotChecked=0, Total=342 [2022-03-20 12:05:21,151 INFO L87 Difference]: Start difference. First operand 792 states and 1053 transitions. Second operand has 19 states, 19 states have (on average 2.4210526315789473) internal successors, (46), 9 states have internal predecessors, (46), 2 states have call successors, (9), 8 states have call predecessors, (9), 5 states have return successors, (7), 5 states have call predecessors, (7), 1 states have call successors, (7) [2022-03-20 12:05:23,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 12:05:23,094 INFO L93 Difference]: Finished difference Result 809 states and 1071 transitions. [2022-03-20 12:05:23,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-03-20 12:05:23,094 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.4210526315789473) internal successors, (46), 9 states have internal predecessors, (46), 2 states have call successors, (9), 8 states have call predecessors, (9), 5 states have return successors, (7), 5 states have call predecessors, (7), 1 states have call successors, (7) Word has length 62 [2022-03-20 12:05:23,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 12:05:23,110 INFO L225 Difference]: With dead ends: 809 [2022-03-20 12:05:23,110 INFO L226 Difference]: Without dead ends: 787 [2022-03-20 12:05:23,110 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=54, Invalid=366, Unknown=0, NotChecked=0, Total=420 [2022-03-20 12:05:23,112 INFO L913 BasicCegarLoop]: 517 mSDtfsCounter, 1161 mSDsluCounter, 1745 mSDsCounter, 0 mSdLazyCounter, 5341 mSolverCounterSat, 406 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1163 SdHoareTripleChecker+Valid, 2262 SdHoareTripleChecker+Invalid, 5747 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 406 IncrementalHoareTripleChecker+Valid, 5341 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-03-20 12:05:23,112 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1163 Valid, 2262 Invalid, 5747 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [406 Valid, 5341 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-03-20 12:05:23,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 787 states. [2022-03-20 12:05:23,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 787 to 787. [2022-03-20 12:05:23,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 787 states, 620 states have (on average 1.3096774193548386) internal successors, (812), 634 states have internal predecessors, (812), 96 states have call successors, (96), 51 states have call predecessors, (96), 70 states have return successors, (138), 108 states have call predecessors, (138), 90 states have call successors, (138) [2022-03-20 12:05:23,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 787 states to 787 states and 1046 transitions. [2022-03-20 12:05:23,213 INFO L78 Accepts]: Start accepts. Automaton has 787 states and 1046 transitions. Word has length 62 [2022-03-20 12:05:23,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 12:05:23,213 INFO L478 AbstractCegarLoop]: Abstraction has 787 states and 1046 transitions. [2022-03-20 12:05:23,213 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.4210526315789473) internal successors, (46), 9 states have internal predecessors, (46), 2 states have call successors, (9), 8 states have call predecessors, (9), 5 states have return successors, (7), 5 states have call predecessors, (7), 1 states have call successors, (7) [2022-03-20 12:05:23,214 INFO L276 IsEmpty]: Start isEmpty. Operand 787 states and 1046 transitions. [2022-03-20 12:05:23,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-03-20 12:05:23,215 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 12:05:23,216 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 12:05:23,216 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-03-20 12:05:23,216 INFO L403 AbstractCegarLoop]: === Iteration 40 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 12:05:23,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 12:05:23,216 INFO L85 PathProgramCache]: Analyzing trace with hash -1508171679, now seen corresponding path program 1 times [2022-03-20 12:05:23,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 12:05:23,216 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413250403] [2022-03-20 12:05:23,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 12:05:23,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 12:05:23,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:05:23,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 12:05:23,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:05:23,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 12:05:23,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:05:23,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 12:05:23,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:05:23,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-20 12:05:23,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:05:23,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-20 12:05:23,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:05:23,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-20 12:05:23,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:05:23,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-03-20 12:05:23,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:05:23,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-20 12:05:23,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:05:23,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 12:05:23,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 12:05:23,565 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413250403] [2022-03-20 12:05:23,565 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413250403] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 12:05:23,565 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 12:05:23,565 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-20 12:05:23,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050622525] [2022-03-20 12:05:23,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 12:05:23,566 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-20 12:05:23,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 12:05:23,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-20 12:05:23,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=359, Unknown=0, NotChecked=0, Total=420 [2022-03-20 12:05:23,567 INFO L87 Difference]: Start difference. First operand 787 states and 1046 transitions. Second operand has 21 states, 20 states have (on average 2.4) internal successors, (48), 10 states have internal predecessors, (48), 4 states have call successors, (10), 10 states have call predecessors, (10), 4 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) [2022-03-20 12:05:26,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 12:05:26,197 INFO L93 Difference]: Finished difference Result 811 states and 1071 transitions. [2022-03-20 12:05:26,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-03-20 12:05:26,198 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 2.4) internal successors, (48), 10 states have internal predecessors, (48), 4 states have call successors, (10), 10 states have call predecessors, (10), 4 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) Word has length 66 [2022-03-20 12:05:26,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 12:05:26,200 INFO L225 Difference]: With dead ends: 811 [2022-03-20 12:05:26,200 INFO L226 Difference]: Without dead ends: 787 [2022-03-20 12:05:26,201 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=120, Invalid=692, Unknown=0, NotChecked=0, Total=812 [2022-03-20 12:05:26,201 INFO L913 BasicCegarLoop]: 513 mSDtfsCounter, 1250 mSDsluCounter, 1825 mSDsCounter, 0 mSdLazyCounter, 5140 mSolverCounterSat, 426 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1252 SdHoareTripleChecker+Valid, 2338 SdHoareTripleChecker+Invalid, 5566 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 426 IncrementalHoareTripleChecker+Valid, 5140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-03-20 12:05:26,202 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1252 Valid, 2338 Invalid, 5566 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [426 Valid, 5140 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-03-20 12:05:26,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 787 states. [2022-03-20 12:05:26,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 787 to 785. [2022-03-20 12:05:26,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 785 states, 619 states have (on average 1.308562197092084) internal successors, (810), 633 states have internal predecessors, (810), 95 states have call successors, (95), 51 states have call predecessors, (95), 70 states have return successors, (137), 107 states have call predecessors, (137), 89 states have call successors, (137) [2022-03-20 12:05:26,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 785 states to 785 states and 1042 transitions. [2022-03-20 12:05:26,279 INFO L78 Accepts]: Start accepts. Automaton has 785 states and 1042 transitions. Word has length 66 [2022-03-20 12:05:26,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 12:05:26,280 INFO L478 AbstractCegarLoop]: Abstraction has 785 states and 1042 transitions. [2022-03-20 12:05:26,280 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 2.4) internal successors, (48), 10 states have internal predecessors, (48), 4 states have call successors, (10), 10 states have call predecessors, (10), 4 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) [2022-03-20 12:05:26,281 INFO L276 IsEmpty]: Start isEmpty. Operand 785 states and 1042 transitions. [2022-03-20 12:05:26,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-03-20 12:05:26,282 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 12:05:26,282 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 12:05:26,282 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-03-20 12:05:26,283 INFO L403 AbstractCegarLoop]: === Iteration 41 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 12:05:26,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 12:05:26,283 INFO L85 PathProgramCache]: Analyzing trace with hash 136312337, now seen corresponding path program 1 times [2022-03-20 12:05:26,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 12:05:26,283 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917179609] [2022-03-20 12:05:26,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 12:05:26,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 12:05:26,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:05:26,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 12:05:26,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:05:26,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 12:05:26,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:05:26,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 12:05:26,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:05:26,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-20 12:05:26,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:05:26,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-20 12:05:26,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:05:26,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-03-20 12:05:26,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:05:26,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-20 12:05:26,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:05:26,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 12:05:26,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 12:05:26,590 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917179609] [2022-03-20 12:05:26,590 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1917179609] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 12:05:26,590 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 12:05:26,590 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-20 12:05:26,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136163850] [2022-03-20 12:05:26,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 12:05:26,591 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-20 12:05:26,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 12:05:26,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-20 12:05:26,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=327, Unknown=0, NotChecked=0, Total=380 [2022-03-20 12:05:26,592 INFO L87 Difference]: Start difference. First operand 785 states and 1042 transitions. Second operand has 20 states, 19 states have (on average 2.473684210526316) internal successors, (47), 10 states have internal predecessors, (47), 4 states have call successors, (9), 9 states have call predecessors, (9), 4 states have return successors, (7), 5 states have call predecessors, (7), 3 states have call successors, (7) [2022-03-20 12:05:29,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 12:05:29,268 INFO L93 Difference]: Finished difference Result 807 states and 1065 transitions. [2022-03-20 12:05:29,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-03-20 12:05:29,269 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 2.473684210526316) internal successors, (47), 10 states have internal predecessors, (47), 4 states have call successors, (9), 9 states have call predecessors, (9), 4 states have return successors, (7), 5 states have call predecessors, (7), 3 states have call successors, (7) Word has length 63 [2022-03-20 12:05:29,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 12:05:29,271 INFO L225 Difference]: With dead ends: 807 [2022-03-20 12:05:29,271 INFO L226 Difference]: Without dead ends: 783 [2022-03-20 12:05:29,272 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=99, Invalid=603, Unknown=0, NotChecked=0, Total=702 [2022-03-20 12:05:29,272 INFO L913 BasicCegarLoop]: 490 mSDtfsCounter, 909 mSDsluCounter, 1634 mSDsCounter, 0 mSdLazyCounter, 5233 mSolverCounterSat, 315 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 912 SdHoareTripleChecker+Valid, 2124 SdHoareTripleChecker+Invalid, 5548 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 315 IncrementalHoareTripleChecker+Valid, 5233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-03-20 12:05:29,273 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [912 Valid, 2124 Invalid, 5548 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [315 Valid, 5233 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-03-20 12:05:29,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 783 states. [2022-03-20 12:05:29,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 783 to 783. [2022-03-20 12:05:29,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 783 states, 618 states have (on average 1.307443365695793) internal successors, (808), 632 states have internal predecessors, (808), 94 states have call successors, (94), 51 states have call predecessors, (94), 70 states have return successors, (136), 106 states have call predecessors, (136), 88 states have call successors, (136) [2022-03-20 12:05:29,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 783 states to 783 states and 1038 transitions. [2022-03-20 12:05:29,338 INFO L78 Accepts]: Start accepts. Automaton has 783 states and 1038 transitions. Word has length 63 [2022-03-20 12:05:29,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 12:05:29,338 INFO L478 AbstractCegarLoop]: Abstraction has 783 states and 1038 transitions. [2022-03-20 12:05:29,338 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 2.473684210526316) internal successors, (47), 10 states have internal predecessors, (47), 4 states have call successors, (9), 9 states have call predecessors, (9), 4 states have return successors, (7), 5 states have call predecessors, (7), 3 states have call successors, (7) [2022-03-20 12:05:29,338 INFO L276 IsEmpty]: Start isEmpty. Operand 783 states and 1038 transitions. [2022-03-20 12:05:29,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-03-20 12:05:29,340 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 12:05:29,340 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 12:05:29,340 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2022-03-20 12:05:29,340 INFO L403 AbstractCegarLoop]: === Iteration 42 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 12:05:29,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 12:05:29,340 INFO L85 PathProgramCache]: Analyzing trace with hash 982595257, now seen corresponding path program 1 times [2022-03-20 12:05:29,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 12:05:29,340 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012009523] [2022-03-20 12:05:29,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 12:05:29,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 12:05:29,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:05:29,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 12:05:29,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:05:29,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 12:05:29,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:05:29,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 12:05:29,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:05:29,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-20 12:05:29,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:05:29,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-20 12:05:29,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:05:29,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-20 12:05:29,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:05:29,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-20 12:05:29,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:05:29,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 12:05:29,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 12:05:29,489 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012009523] [2022-03-20 12:05:29,489 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1012009523] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 12:05:29,489 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 12:05:29,489 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-03-20 12:05:29,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355696412] [2022-03-20 12:05:29,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 12:05:29,490 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-20 12:05:29,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 12:05:29,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-20 12:05:29,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-03-20 12:05:29,490 INFO L87 Difference]: Start difference. First operand 783 states and 1038 transitions. Second operand has 10 states, 10 states have (on average 4.7) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (9), 9 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-03-20 12:05:30,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 12:05:30,305 INFO L93 Difference]: Finished difference Result 1050 states and 1393 transitions. [2022-03-20 12:05:30,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-20 12:05:30,305 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.7) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (9), 9 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 63 [2022-03-20 12:05:30,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 12:05:30,307 INFO L225 Difference]: With dead ends: 1050 [2022-03-20 12:05:30,307 INFO L226 Difference]: Without dead ends: 724 [2022-03-20 12:05:30,308 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=66, Unknown=0, NotChecked=0, Total=110 [2022-03-20 12:05:30,309 INFO L913 BasicCegarLoop]: 483 mSDtfsCounter, 597 mSDsluCounter, 369 mSDsCounter, 0 mSdLazyCounter, 856 mSolverCounterSat, 198 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 599 SdHoareTripleChecker+Valid, 852 SdHoareTripleChecker+Invalid, 1054 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 198 IncrementalHoareTripleChecker+Valid, 856 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-20 12:05:30,309 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [599 Valid, 852 Invalid, 1054 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [198 Valid, 856 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-20 12:05:30,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 724 states. [2022-03-20 12:05:30,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 724 to 675. [2022-03-20 12:05:30,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 675 states, 533 states have (on average 1.2926829268292683) internal successors, (689), 547 states have internal predecessors, (689), 81 states have call successors, (81), 45 states have call predecessors, (81), 60 states have return successors, (100), 89 states have call predecessors, (100), 75 states have call successors, (100) [2022-03-20 12:05:30,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 675 states to 675 states and 870 transitions. [2022-03-20 12:05:30,368 INFO L78 Accepts]: Start accepts. Automaton has 675 states and 870 transitions. Word has length 63 [2022-03-20 12:05:30,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 12:05:30,368 INFO L478 AbstractCegarLoop]: Abstraction has 675 states and 870 transitions. [2022-03-20 12:05:30,368 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.7) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (9), 9 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-03-20 12:05:30,368 INFO L276 IsEmpty]: Start isEmpty. Operand 675 states and 870 transitions. [2022-03-20 12:05:30,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-03-20 12:05:30,369 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 12:05:30,369 INFO L499 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 12:05:30,370 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2022-03-20 12:05:30,370 INFO L403 AbstractCegarLoop]: === Iteration 43 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 12:05:30,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 12:05:30,370 INFO L85 PathProgramCache]: Analyzing trace with hash 274863522, now seen corresponding path program 1 times [2022-03-20 12:05:30,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 12:05:30,370 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052675624] [2022-03-20 12:05:30,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 12:05:30,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 12:05:30,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:05:30,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 12:05:30,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:05:30,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 12:05:30,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:05:30,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 12:05:30,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:05:30,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-03-20 12:05:30,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:05:30,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-03-20 12:05:30,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:05:30,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-20 12:05:30,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:05:30,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 12:05:30,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:05:30,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-20 12:05:30,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:05:30,529 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 12:05:30,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 12:05:30,529 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1052675624] [2022-03-20 12:05:30,530 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1052675624] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 12:05:30,530 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [648389067] [2022-03-20 12:05:30,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 12:05:30,530 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 12:05:30,530 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 12:05:30,532 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-20 12:05:30,533 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-03-20 12:05:30,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:05:30,699 INFO L263 TraceCheckSpWp]: Trace formula consists of 852 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-20 12:05:30,701 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 12:05:30,777 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 12:05:30,777 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-20 12:05:30,777 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [648389067] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 12:05:30,777 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-20 12:05:30,778 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 10 [2022-03-20 12:05:30,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745972025] [2022-03-20 12:05:30,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 12:05:30,778 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-20 12:05:30,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 12:05:30,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-20 12:05:30,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2022-03-20 12:05:30,779 INFO L87 Difference]: Start difference. First operand 675 states and 870 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 3 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-03-20 12:05:30,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 12:05:30,875 INFO L93 Difference]: Finished difference Result 812 states and 1036 transitions. [2022-03-20 12:05:30,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-20 12:05:30,876 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 3 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 80 [2022-03-20 12:05:30,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 12:05:30,878 INFO L225 Difference]: With dead ends: 812 [2022-03-20 12:05:30,878 INFO L226 Difference]: Without dead ends: 729 [2022-03-20 12:05:30,878 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 90 SyntacticMatches, 3 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2022-03-20 12:05:30,891 INFO L913 BasicCegarLoop]: 593 mSDtfsCounter, 113 mSDsluCounter, 504 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 1097 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-20 12:05:30,892 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [113 Valid, 1097 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-20 12:05:30,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 729 states. [2022-03-20 12:05:30,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 729 to 706. [2022-03-20 12:05:30,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 706 states, 558 states have (on average 1.2939068100358424) internal successors, (722), 571 states have internal predecessors, (722), 83 states have call successors, (83), 48 states have call predecessors, (83), 64 states have return successors, (104), 93 states have call predecessors, (104), 78 states have call successors, (104) [2022-03-20 12:05:30,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 706 states to 706 states and 909 transitions. [2022-03-20 12:05:30,953 INFO L78 Accepts]: Start accepts. Automaton has 706 states and 909 transitions. Word has length 80 [2022-03-20 12:05:30,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 12:05:30,954 INFO L478 AbstractCegarLoop]: Abstraction has 706 states and 909 transitions. [2022-03-20 12:05:30,954 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 3 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-03-20 12:05:30,954 INFO L276 IsEmpty]: Start isEmpty. Operand 706 states and 909 transitions. [2022-03-20 12:05:30,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-03-20 12:05:30,956 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 12:05:30,956 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 12:05:30,977 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-03-20 12:05:31,171 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable42 [2022-03-20 12:05:31,172 INFO L403 AbstractCegarLoop]: === Iteration 44 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 12:05:31,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 12:05:31,172 INFO L85 PathProgramCache]: Analyzing trace with hash 1864492088, now seen corresponding path program 1 times [2022-03-20 12:05:31,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 12:05:31,172 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852127989] [2022-03-20 12:05:31,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 12:05:31,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 12:05:31,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:05:31,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 12:05:31,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:05:31,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 12:05:31,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:05:31,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 12:05:31,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:05:31,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-03-20 12:05:31,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:05:31,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 12:05:31,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:05:31,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-20 12:05:31,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:05:31,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-20 12:05:31,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:05:31,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 12:05:31,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:05:31,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 12:05:31,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 12:05:31,346 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852127989] [2022-03-20 12:05:31,346 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [852127989] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 12:05:31,346 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 12:05:31,346 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-03-20 12:05:31,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239843187] [2022-03-20 12:05:31,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 12:05:31,347 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-20 12:05:31,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 12:05:31,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-20 12:05:31,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-03-20 12:05:31,347 INFO L87 Difference]: Start difference. First operand 706 states and 909 transitions. Second operand has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (12), 8 states have call predecessors, (12), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2022-03-20 12:05:32,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 12:05:32,340 INFO L93 Difference]: Finished difference Result 826 states and 1065 transitions. [2022-03-20 12:05:32,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-20 12:05:32,340 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (12), 8 states have call predecessors, (12), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) Word has length 66 [2022-03-20 12:05:32,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 12:05:32,342 INFO L225 Difference]: With dead ends: 826 [2022-03-20 12:05:32,342 INFO L226 Difference]: Without dead ends: 706 [2022-03-20 12:05:32,343 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2022-03-20 12:05:32,343 INFO L913 BasicCegarLoop]: 459 mSDtfsCounter, 1152 mSDsluCounter, 427 mSDsCounter, 0 mSdLazyCounter, 883 mSolverCounterSat, 389 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1157 SdHoareTripleChecker+Valid, 886 SdHoareTripleChecker+Invalid, 1272 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 389 IncrementalHoareTripleChecker+Valid, 883 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-03-20 12:05:32,343 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1157 Valid, 886 Invalid, 1272 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [389 Valid, 883 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-03-20 12:05:32,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 706 states. [2022-03-20 12:05:32,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 706 to 706. [2022-03-20 12:05:32,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 706 states, 558 states have (on average 1.2885304659498207) internal successors, (719), 571 states have internal predecessors, (719), 83 states have call successors, (83), 48 states have call predecessors, (83), 64 states have return successors, (104), 93 states have call predecessors, (104), 78 states have call successors, (104) [2022-03-20 12:05:32,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 706 states to 706 states and 906 transitions. [2022-03-20 12:05:32,412 INFO L78 Accepts]: Start accepts. Automaton has 706 states and 906 transitions. Word has length 66 [2022-03-20 12:05:32,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 12:05:32,413 INFO L478 AbstractCegarLoop]: Abstraction has 706 states and 906 transitions. [2022-03-20 12:05:32,413 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (12), 8 states have call predecessors, (12), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2022-03-20 12:05:32,413 INFO L276 IsEmpty]: Start isEmpty. Operand 706 states and 906 transitions. [2022-03-20 12:05:32,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-03-20 12:05:32,414 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 12:05:32,414 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 12:05:32,414 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2022-03-20 12:05:32,414 INFO L403 AbstractCegarLoop]: === Iteration 45 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 12:05:32,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 12:05:32,414 INFO L85 PathProgramCache]: Analyzing trace with hash 531525074, now seen corresponding path program 1 times [2022-03-20 12:05:32,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 12:05:32,415 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446651573] [2022-03-20 12:05:32,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 12:05:32,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 12:05:32,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:05:32,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 12:05:32,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:05:32,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 12:05:32,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:05:32,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 12:05:32,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:05:32,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-20 12:05:32,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:05:32,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-20 12:05:32,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:05:32,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-20 12:05:32,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:05:32,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-20 12:05:32,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:05:32,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 12:05:32,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 12:05:32,611 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446651573] [2022-03-20 12:05:32,611 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [446651573] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 12:05:32,611 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 12:05:32,611 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-20 12:05:32,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162023306] [2022-03-20 12:05:32,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 12:05:32,612 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-20 12:05:32,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 12:05:32,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-20 12:05:32,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2022-03-20 12:05:32,612 INFO L87 Difference]: Start difference. First operand 706 states and 906 transitions. Second operand has 12 states, 12 states have (on average 4.083333333333333) internal successors, (49), 5 states have internal predecessors, (49), 3 states have call successors, (9), 9 states have call predecessors, (9), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-03-20 12:05:33,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 12:05:33,921 INFO L93 Difference]: Finished difference Result 770 states and 982 transitions. [2022-03-20 12:05:33,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-03-20 12:05:33,921 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.083333333333333) internal successors, (49), 5 states have internal predecessors, (49), 3 states have call successors, (9), 9 states have call predecessors, (9), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 65 [2022-03-20 12:05:33,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 12:05:33,923 INFO L225 Difference]: With dead ends: 770 [2022-03-20 12:05:33,923 INFO L226 Difference]: Without dead ends: 737 [2022-03-20 12:05:33,924 INFO L912 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 [2022-03-20 12:05:33,924 INFO L913 BasicCegarLoop]: 467 mSDtfsCounter, 1026 mSDsluCounter, 545 mSDsCounter, 0 mSdLazyCounter, 1225 mSolverCounterSat, 321 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1028 SdHoareTripleChecker+Valid, 1012 SdHoareTripleChecker+Invalid, 1546 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 321 IncrementalHoareTripleChecker+Valid, 1225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-03-20 12:05:33,924 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1028 Valid, 1012 Invalid, 1546 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [321 Valid, 1225 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-03-20 12:05:33,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 737 states. [2022-03-20 12:05:33,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 737 to 712. [2022-03-20 12:05:33,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 712 states, 563 states have (on average 1.2877442273534636) internal successors, (725), 576 states have internal predecessors, (725), 84 states have call successors, (84), 48 states have call predecessors, (84), 64 states have return successors, (105), 94 states have call predecessors, (105), 79 states have call successors, (105) [2022-03-20 12:05:33,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 712 states to 712 states and 914 transitions. [2022-03-20 12:05:33,983 INFO L78 Accepts]: Start accepts. Automaton has 712 states and 914 transitions. Word has length 65 [2022-03-20 12:05:33,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 12:05:33,983 INFO L478 AbstractCegarLoop]: Abstraction has 712 states and 914 transitions. [2022-03-20 12:05:33,984 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.083333333333333) internal successors, (49), 5 states have internal predecessors, (49), 3 states have call successors, (9), 9 states have call predecessors, (9), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-03-20 12:05:33,984 INFO L276 IsEmpty]: Start isEmpty. Operand 712 states and 914 transitions. [2022-03-20 12:05:33,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-03-20 12:05:33,985 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 12:05:33,985 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 12:05:33,985 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2022-03-20 12:05:33,985 INFO L403 AbstractCegarLoop]: === Iteration 46 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 12:05:33,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 12:05:33,985 INFO L85 PathProgramCache]: Analyzing trace with hash -925827221, now seen corresponding path program 1 times [2022-03-20 12:05:33,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 12:05:33,985 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800279316] [2022-03-20 12:05:33,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 12:05:33,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 12:05:33,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:05:34,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 12:05:34,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:05:34,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 12:05:34,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:05:34,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 12:05:34,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:05:34,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-20 12:05:34,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:05:34,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-20 12:05:34,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:05:34,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-03-20 12:05:34,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:05:34,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-03-20 12:05:34,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:05:34,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 12:05:34,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 12:05:34,156 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800279316] [2022-03-20 12:05:34,157 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [800279316] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 12:05:34,157 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 12:05:34,157 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-20 12:05:34,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228854098] [2022-03-20 12:05:34,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 12:05:34,157 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-20 12:05:34,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 12:05:34,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-20 12:05:34,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2022-03-20 12:05:34,158 INFO L87 Difference]: Start difference. First operand 712 states and 914 transitions. Second operand has 12 states, 12 states have (on average 4.166666666666667) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-03-20 12:05:35,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 12:05:35,297 INFO L93 Difference]: Finished difference Result 768 states and 975 transitions. [2022-03-20 12:05:35,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-20 12:05:35,297 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.166666666666667) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 66 [2022-03-20 12:05:35,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 12:05:35,299 INFO L225 Difference]: With dead ends: 768 [2022-03-20 12:05:35,299 INFO L226 Difference]: Without dead ends: 714 [2022-03-20 12:05:35,300 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=76, Invalid=164, Unknown=0, NotChecked=0, Total=240 [2022-03-20 12:05:35,300 INFO L913 BasicCegarLoop]: 473 mSDtfsCounter, 873 mSDsluCounter, 538 mSDsCounter, 0 mSdLazyCounter, 1551 mSolverCounterSat, 292 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 875 SdHoareTripleChecker+Valid, 1011 SdHoareTripleChecker+Invalid, 1843 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 292 IncrementalHoareTripleChecker+Valid, 1551 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-03-20 12:05:35,300 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [875 Valid, 1011 Invalid, 1843 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [292 Valid, 1551 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-03-20 12:05:35,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 714 states. [2022-03-20 12:05:35,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 714 to 712. [2022-03-20 12:05:35,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 712 states, 563 states have (on average 1.2841918294849024) internal successors, (723), 576 states have internal predecessors, (723), 84 states have call successors, (84), 48 states have call predecessors, (84), 64 states have return successors, (105), 94 states have call predecessors, (105), 79 states have call successors, (105) [2022-03-20 12:05:35,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 712 states to 712 states and 912 transitions. [2022-03-20 12:05:35,397 INFO L78 Accepts]: Start accepts. Automaton has 712 states and 912 transitions. Word has length 66 [2022-03-20 12:05:35,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 12:05:35,398 INFO L478 AbstractCegarLoop]: Abstraction has 712 states and 912 transitions. [2022-03-20 12:05:35,398 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.166666666666667) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-03-20 12:05:35,398 INFO L276 IsEmpty]: Start isEmpty. Operand 712 states and 912 transitions. [2022-03-20 12:05:35,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-03-20 12:05:35,399 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 12:05:35,399 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 12:05:35,399 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2022-03-20 12:05:35,415 INFO L403 AbstractCegarLoop]: === Iteration 47 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 12:05:35,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 12:05:35,416 INFO L85 PathProgramCache]: Analyzing trace with hash -575027284, now seen corresponding path program 1 times [2022-03-20 12:05:35,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 12:05:35,416 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144013637] [2022-03-20 12:05:35,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 12:05:35,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 12:05:35,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:05:35,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 12:05:35,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:05:35,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 12:05:35,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:05:35,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 12:05:35,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:05:35,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-20 12:05:35,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:05:35,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-20 12:05:35,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:05:35,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-03-20 12:05:35,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:05:35,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-03-20 12:05:35,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:05:35,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 12:05:35,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 12:05:35,659 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2144013637] [2022-03-20 12:05:35,659 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2144013637] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 12:05:35,659 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 12:05:35,659 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-03-20 12:05:35,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131832387] [2022-03-20 12:05:35,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 12:05:35,660 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-03-20 12:05:35,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 12:05:35,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-03-20 12:05:35,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2022-03-20 12:05:35,660 INFO L87 Difference]: Start difference. First operand 712 states and 912 transitions. Second operand has 16 states, 16 states have (on average 3.125) internal successors, (50), 7 states have internal predecessors, (50), 3 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 4 states have call predecessors, (7), 2 states have call successors, (7) [2022-03-20 12:05:37,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 12:05:37,595 INFO L93 Difference]: Finished difference Result 739 states and 942 transitions. [2022-03-20 12:05:37,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-03-20 12:05:37,595 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.125) internal successors, (50), 7 states have internal predecessors, (50), 3 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 4 states have call predecessors, (7), 2 states have call successors, (7) Word has length 66 [2022-03-20 12:05:37,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 12:05:37,603 INFO L225 Difference]: With dead ends: 739 [2022-03-20 12:05:37,604 INFO L226 Difference]: Without dead ends: 681 [2022-03-20 12:05:37,604 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2022-03-20 12:05:37,604 INFO L913 BasicCegarLoop]: 476 mSDtfsCounter, 614 mSDsluCounter, 1301 mSDsCounter, 0 mSdLazyCounter, 3597 mSolverCounterSat, 215 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 617 SdHoareTripleChecker+Valid, 1777 SdHoareTripleChecker+Invalid, 3812 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 215 IncrementalHoareTripleChecker+Valid, 3597 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-03-20 12:05:37,605 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [617 Valid, 1777 Invalid, 3812 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [215 Valid, 3597 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-03-20 12:05:37,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 681 states. [2022-03-20 12:05:37,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 681 to 675. [2022-03-20 12:05:37,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 675 states, 533 states have (on average 1.2701688555347093) internal successors, (677), 546 states have internal predecessors, (677), 77 states have call successors, (77), 48 states have call predecessors, (77), 64 states have return successors, (97), 87 states have call predecessors, (97), 72 states have call successors, (97) [2022-03-20 12:05:37,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 675 states to 675 states and 851 transitions. [2022-03-20 12:05:37,659 INFO L78 Accepts]: Start accepts. Automaton has 675 states and 851 transitions. Word has length 66 [2022-03-20 12:05:37,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 12:05:37,659 INFO L478 AbstractCegarLoop]: Abstraction has 675 states and 851 transitions. [2022-03-20 12:05:37,660 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.125) internal successors, (50), 7 states have internal predecessors, (50), 3 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 4 states have call predecessors, (7), 2 states have call successors, (7) [2022-03-20 12:05:37,660 INFO L276 IsEmpty]: Start isEmpty. Operand 675 states and 851 transitions. [2022-03-20 12:05:37,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-03-20 12:05:37,661 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 12:05:37,661 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 12:05:37,661 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2022-03-20 12:05:37,661 INFO L403 AbstractCegarLoop]: === Iteration 48 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 12:05:37,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 12:05:37,661 INFO L85 PathProgramCache]: Analyzing trace with hash -329926322, now seen corresponding path program 1 times [2022-03-20 12:05:37,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 12:05:37,661 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663962635] [2022-03-20 12:05:37,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 12:05:37,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 12:05:37,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:05:37,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 12:05:37,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:05:37,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 12:05:37,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:05:37,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 12:05:37,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:05:37,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-20 12:05:37,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:05:37,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-20 12:05:37,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:05:37,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-03-20 12:05:37,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:05:37,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-20 12:05:37,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:05:37,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 12:05:37,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 12:05:37,846 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1663962635] [2022-03-20 12:05:37,846 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1663962635] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 12:05:37,846 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 12:05:37,846 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-20 12:05:37,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518027679] [2022-03-20 12:05:37,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 12:05:37,846 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-20 12:05:37,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 12:05:37,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-20 12:05:37,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2022-03-20 12:05:37,847 INFO L87 Difference]: Start difference. First operand 675 states and 851 transitions. Second operand has 12 states, 12 states have (on average 4.25) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-03-20 12:05:38,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 12:05:38,660 INFO L93 Difference]: Finished difference Result 709 states and 886 transitions. [2022-03-20 12:05:38,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-20 12:05:38,661 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.25) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 67 [2022-03-20 12:05:38,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 12:05:38,662 INFO L225 Difference]: With dead ends: 709 [2022-03-20 12:05:38,663 INFO L226 Difference]: Without dead ends: 670 [2022-03-20 12:05:38,664 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2022-03-20 12:05:38,664 INFO L913 BasicCegarLoop]: 423 mSDtfsCounter, 529 mSDsluCounter, 527 mSDsCounter, 0 mSdLazyCounter, 1376 mSolverCounterSat, 182 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 531 SdHoareTripleChecker+Valid, 950 SdHoareTripleChecker+Invalid, 1558 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 182 IncrementalHoareTripleChecker+Valid, 1376 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-20 12:05:38,664 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [531 Valid, 950 Invalid, 1558 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [182 Valid, 1376 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-20 12:05:38,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 670 states. [2022-03-20 12:05:38,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 670 to 670. [2022-03-20 12:05:38,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 670 states, 529 states have (on average 1.270321361058601) internal successors, (672), 542 states have internal predecessors, (672), 76 states have call successors, (76), 48 states have call predecessors, (76), 64 states have return successors, (96), 86 states have call predecessors, (96), 71 states have call successors, (96) [2022-03-20 12:05:38,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 670 states to 670 states and 844 transitions. [2022-03-20 12:05:38,766 INFO L78 Accepts]: Start accepts. Automaton has 670 states and 844 transitions. Word has length 67 [2022-03-20 12:05:38,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 12:05:38,766 INFO L478 AbstractCegarLoop]: Abstraction has 670 states and 844 transitions. [2022-03-20 12:05:38,766 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.25) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-03-20 12:05:38,766 INFO L276 IsEmpty]: Start isEmpty. Operand 670 states and 844 transitions. [2022-03-20 12:05:38,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-03-20 12:05:38,767 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 12:05:38,767 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 12:05:38,767 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2022-03-20 12:05:38,767 INFO L403 AbstractCegarLoop]: === Iteration 49 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 12:05:38,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 12:05:38,767 INFO L85 PathProgramCache]: Analyzing trace with hash 872575031, now seen corresponding path program 1 times [2022-03-20 12:05:38,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 12:05:38,771 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179459768] [2022-03-20 12:05:38,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 12:05:38,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 12:05:38,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:05:38,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 12:05:38,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:05:38,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 12:05:38,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:05:38,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 12:05:38,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:05:38,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-20 12:05:38,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:05:38,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-03-20 12:05:38,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:05:38,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-03-20 12:05:38,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:05:38,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-20 12:05:38,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:05:38,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 12:05:38,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 12:05:38,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179459768] [2022-03-20 12:05:38,952 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [179459768] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 12:05:38,952 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 12:05:38,952 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-03-20 12:05:38,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946070382] [2022-03-20 12:05:38,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 12:05:38,952 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-20 12:05:38,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 12:05:38,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-20 12:05:38,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-03-20 12:05:38,953 INFO L87 Difference]: Start difference. First operand 670 states and 844 transitions. Second operand has 10 states, 10 states have (on average 5.1) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (9), 9 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2022-03-20 12:05:39,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 12:05:39,645 INFO L93 Difference]: Finished difference Result 777 states and 975 transitions. [2022-03-20 12:05:39,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-20 12:05:39,645 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.1) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (9), 9 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) Word has length 67 [2022-03-20 12:05:39,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 12:05:39,660 INFO L225 Difference]: With dead ends: 777 [2022-03-20 12:05:39,660 INFO L226 Difference]: Without dead ends: 769 [2022-03-20 12:05:39,661 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 10 SyntacticMatches, 3 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=98, Unknown=0, NotChecked=0, Total=156 [2022-03-20 12:05:39,675 INFO L913 BasicCegarLoop]: 417 mSDtfsCounter, 1192 mSDsluCounter, 357 mSDsCounter, 0 mSdLazyCounter, 728 mSolverCounterSat, 411 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1201 SdHoareTripleChecker+Valid, 774 SdHoareTripleChecker+Invalid, 1139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 411 IncrementalHoareTripleChecker+Valid, 728 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-20 12:05:39,677 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1201 Valid, 774 Invalid, 1139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [411 Valid, 728 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-20 12:05:39,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 769 states. [2022-03-20 12:05:39,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 769 to 712. [2022-03-20 12:05:39,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 712 states, 561 states have (on average 1.2638146167557933) internal successors, (709), 576 states have internal predecessors, (709), 78 states have call successors, (78), 50 states have call predecessors, (78), 72 states have return successors, (104), 94 states have call predecessors, (104), 73 states have call successors, (104) [2022-03-20 12:05:39,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 712 states to 712 states and 891 transitions. [2022-03-20 12:05:39,785 INFO L78 Accepts]: Start accepts. Automaton has 712 states and 891 transitions. Word has length 67 [2022-03-20 12:05:39,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 12:05:39,786 INFO L478 AbstractCegarLoop]: Abstraction has 712 states and 891 transitions. [2022-03-20 12:05:39,786 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.1) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (9), 9 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2022-03-20 12:05:39,786 INFO L276 IsEmpty]: Start isEmpty. Operand 712 states and 891 transitions. [2022-03-20 12:05:39,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-03-20 12:05:39,787 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 12:05:39,787 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 12:05:39,787 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2022-03-20 12:05:39,787 INFO L403 AbstractCegarLoop]: === Iteration 50 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 12:05:39,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 12:05:39,788 INFO L85 PathProgramCache]: Analyzing trace with hash 1310592370, now seen corresponding path program 1 times [2022-03-20 12:05:39,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 12:05:39,788 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767141417] [2022-03-20 12:05:39,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 12:05:39,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 12:05:39,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:05:39,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 12:05:39,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:05:39,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 12:05:39,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:05:39,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 12:05:39,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:05:39,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-20 12:05:39,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:05:39,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-03-20 12:05:39,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:05:39,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-03-20 12:05:39,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:05:39,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-20 12:05:39,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:05:39,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 12:05:39,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 12:05:39,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767141417] [2022-03-20 12:05:39,965 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [767141417] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 12:05:39,965 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 12:05:39,966 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-20 12:05:39,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855983206] [2022-03-20 12:05:39,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 12:05:39,967 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-20 12:05:39,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 12:05:39,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-20 12:05:39,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2022-03-20 12:05:39,967 INFO L87 Difference]: Start difference. First operand 712 states and 891 transitions. Second operand has 12 states, 12 states have (on average 4.333333333333333) internal successors, (52), 5 states have internal predecessors, (52), 3 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 4 states have call predecessors, (7), 2 states have call successors, (7) [2022-03-20 12:05:41,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 12:05:41,424 INFO L93 Difference]: Finished difference Result 773 states and 969 transitions. [2022-03-20 12:05:41,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-20 12:05:41,424 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.333333333333333) internal successors, (52), 5 states have internal predecessors, (52), 3 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 4 states have call predecessors, (7), 2 states have call successors, (7) Word has length 68 [2022-03-20 12:05:41,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 12:05:41,427 INFO L225 Difference]: With dead ends: 773 [2022-03-20 12:05:41,427 INFO L226 Difference]: Without dead ends: 767 [2022-03-20 12:05:41,427 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=113, Invalid=267, Unknown=0, NotChecked=0, Total=380 [2022-03-20 12:05:41,427 INFO L913 BasicCegarLoop]: 417 mSDtfsCounter, 1498 mSDsluCounter, 398 mSDsCounter, 0 mSdLazyCounter, 1416 mSolverCounterSat, 495 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1505 SdHoareTripleChecker+Valid, 815 SdHoareTripleChecker+Invalid, 1911 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 495 IncrementalHoareTripleChecker+Valid, 1416 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-03-20 12:05:41,428 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1505 Valid, 815 Invalid, 1911 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [495 Valid, 1416 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-03-20 12:05:41,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 767 states. [2022-03-20 12:05:41,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 767 to 712. [2022-03-20 12:05:41,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 712 states, 561 states have (on average 1.2620320855614973) internal successors, (708), 576 states have internal predecessors, (708), 78 states have call successors, (78), 50 states have call predecessors, (78), 72 states have return successors, (104), 94 states have call predecessors, (104), 73 states have call successors, (104) [2022-03-20 12:05:41,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 712 states to 712 states and 890 transitions. [2022-03-20 12:05:41,493 INFO L78 Accepts]: Start accepts. Automaton has 712 states and 890 transitions. Word has length 68 [2022-03-20 12:05:41,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 12:05:41,493 INFO L478 AbstractCegarLoop]: Abstraction has 712 states and 890 transitions. [2022-03-20 12:05:41,494 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.333333333333333) internal successors, (52), 5 states have internal predecessors, (52), 3 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 4 states have call predecessors, (7), 2 states have call successors, (7) [2022-03-20 12:05:41,494 INFO L276 IsEmpty]: Start isEmpty. Operand 712 states and 890 transitions. [2022-03-20 12:05:41,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-20 12:05:41,495 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 12:05:41,495 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 12:05:41,495 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2022-03-20 12:05:41,495 INFO L403 AbstractCegarLoop]: === Iteration 51 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 12:05:41,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 12:05:41,496 INFO L85 PathProgramCache]: Analyzing trace with hash 1966008401, now seen corresponding path program 1 times [2022-03-20 12:05:41,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 12:05:41,496 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232325058] [2022-03-20 12:05:41,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 12:05:41,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 12:05:41,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:05:41,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 12:05:41,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:05:41,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 12:05:41,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:05:41,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 12:05:41,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:05:41,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-20 12:05:41,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:05:41,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-20 12:05:41,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:05:41,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-03-20 12:05:41,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:05:41,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-20 12:05:41,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:05:41,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-20 12:05:41,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:05:41,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 12:05:41,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 12:05:41,811 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232325058] [2022-03-20 12:05:41,811 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [232325058] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 12:05:41,811 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 12:05:41,811 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2022-03-20 12:05:41,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431990647] [2022-03-20 12:05:41,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 12:05:41,812 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-03-20 12:05:41,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 12:05:41,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-03-20 12:05:41,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=441, Unknown=0, NotChecked=0, Total=506 [2022-03-20 12:05:41,813 INFO L87 Difference]: Start difference. First operand 712 states and 890 transitions. Second operand has 23 states, 22 states have (on average 2.3636363636363638) internal successors, (52), 11 states have internal predecessors, (52), 4 states have call successors, (10), 10 states have call predecessors, (10), 5 states have return successors, (8), 6 states have call predecessors, (8), 3 states have call successors, (8) [2022-03-20 12:05:44,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 12:05:44,233 INFO L93 Difference]: Finished difference Result 736 states and 916 transitions. [2022-03-20 12:05:44,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-03-20 12:05:44,233 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 2.3636363636363638) internal successors, (52), 11 states have internal predecessors, (52), 4 states have call successors, (10), 10 states have call predecessors, (10), 5 states have return successors, (8), 6 states have call predecessors, (8), 3 states have call successors, (8) Word has length 70 [2022-03-20 12:05:44,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 12:05:44,235 INFO L225 Difference]: With dead ends: 736 [2022-03-20 12:05:44,235 INFO L226 Difference]: Without dead ends: 709 [2022-03-20 12:05:44,235 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=148, Invalid=908, Unknown=0, NotChecked=0, Total=1056 [2022-03-20 12:05:44,236 INFO L913 BasicCegarLoop]: 428 mSDtfsCounter, 1446 mSDsluCounter, 2103 mSDsCounter, 0 mSdLazyCounter, 4950 mSolverCounterSat, 512 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1448 SdHoareTripleChecker+Valid, 2531 SdHoareTripleChecker+Invalid, 5462 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 512 IncrementalHoareTripleChecker+Valid, 4950 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-03-20 12:05:44,236 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1448 Valid, 2531 Invalid, 5462 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [512 Valid, 4950 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-03-20 12:05:44,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 709 states. [2022-03-20 12:05:44,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 709 to 709. [2022-03-20 12:05:44,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 709 states, 559 states have (on average 1.2611806797853309) internal successors, (705), 574 states have internal predecessors, (705), 77 states have call successors, (77), 50 states have call predecessors, (77), 72 states have return successors, (103), 93 states have call predecessors, (103), 72 states have call successors, (103) [2022-03-20 12:05:44,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 709 states to 709 states and 885 transitions. [2022-03-20 12:05:44,295 INFO L78 Accepts]: Start accepts. Automaton has 709 states and 885 transitions. Word has length 70 [2022-03-20 12:05:44,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 12:05:44,296 INFO L478 AbstractCegarLoop]: Abstraction has 709 states and 885 transitions. [2022-03-20 12:05:44,296 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 2.3636363636363638) internal successors, (52), 11 states have internal predecessors, (52), 4 states have call successors, (10), 10 states have call predecessors, (10), 5 states have return successors, (8), 6 states have call predecessors, (8), 3 states have call successors, (8) [2022-03-20 12:05:44,297 INFO L276 IsEmpty]: Start isEmpty. Operand 709 states and 885 transitions. [2022-03-20 12:05:44,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-03-20 12:05:44,298 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 12:05:44,298 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 12:05:44,298 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2022-03-20 12:05:44,298 INFO L403 AbstractCegarLoop]: === Iteration 52 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 12:05:44,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 12:05:44,299 INFO L85 PathProgramCache]: Analyzing trace with hash -771243238, now seen corresponding path program 1 times [2022-03-20 12:05:44,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 12:05:44,299 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618988568] [2022-03-20 12:05:44,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 12:05:44,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 12:05:44,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:05:44,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 12:05:44,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:05:44,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 12:05:44,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:05:44,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 12:05:44,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:05:44,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-20 12:05:44,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:05:44,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-20 12:05:44,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:05:44,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-20 12:05:44,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:05:44,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-20 12:05:44,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:05:44,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 12:05:44,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 12:05:44,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618988568] [2022-03-20 12:05:44,618 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [618988568] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 12:05:44,618 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 12:05:44,618 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-20 12:05:44,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915211947] [2022-03-20 12:05:44,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 12:05:44,618 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-20 12:05:44,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 12:05:44,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-20 12:05:44,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=296, Unknown=0, NotChecked=0, Total=342 [2022-03-20 12:05:44,620 INFO L87 Difference]: Start difference. First operand 709 states and 885 transitions. Second operand has 19 states, 19 states have (on average 2.9473684210526314) internal successors, (56), 9 states have internal predecessors, (56), 2 states have call successors, (9), 8 states have call predecessors, (9), 5 states have return successors, (7), 5 states have call predecessors, (7), 1 states have call successors, (7) [2022-03-20 12:05:46,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 12:05:46,785 INFO L93 Difference]: Finished difference Result 729 states and 906 transitions. [2022-03-20 12:05:46,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-03-20 12:05:46,786 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.9473684210526314) internal successors, (56), 9 states have internal predecessors, (56), 2 states have call successors, (9), 8 states have call predecessors, (9), 5 states have return successors, (7), 5 states have call predecessors, (7), 1 states have call successors, (7) Word has length 72 [2022-03-20 12:05:46,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 12:05:46,787 INFO L225 Difference]: With dead ends: 729 [2022-03-20 12:05:46,787 INFO L226 Difference]: Without dead ends: 707 [2022-03-20 12:05:46,788 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=54, Invalid=366, Unknown=0, NotChecked=0, Total=420 [2022-03-20 12:05:46,788 INFO L913 BasicCegarLoop]: 424 mSDtfsCounter, 239 mSDsluCounter, 1606 mSDsCounter, 0 mSdLazyCounter, 4495 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 241 SdHoareTripleChecker+Valid, 2030 SdHoareTripleChecker+Invalid, 4582 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 4495 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-03-20 12:05:46,788 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [241 Valid, 2030 Invalid, 4582 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 4495 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-03-20 12:05:46,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 707 states. [2022-03-20 12:05:46,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 707 to 707. [2022-03-20 12:05:46,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 707 states, 558 states have (on average 1.2598566308243728) internal successors, (703), 573 states have internal predecessors, (703), 76 states have call successors, (76), 50 states have call predecessors, (76), 72 states have return successors, (102), 92 states have call predecessors, (102), 71 states have call successors, (102) [2022-03-20 12:05:46,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 707 states to 707 states and 881 transitions. [2022-03-20 12:05:46,847 INFO L78 Accepts]: Start accepts. Automaton has 707 states and 881 transitions. Word has length 72 [2022-03-20 12:05:46,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 12:05:46,847 INFO L478 AbstractCegarLoop]: Abstraction has 707 states and 881 transitions. [2022-03-20 12:05:46,847 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.9473684210526314) internal successors, (56), 9 states have internal predecessors, (56), 2 states have call successors, (9), 8 states have call predecessors, (9), 5 states have return successors, (7), 5 states have call predecessors, (7), 1 states have call successors, (7) [2022-03-20 12:05:46,847 INFO L276 IsEmpty]: Start isEmpty. Operand 707 states and 881 transitions. [2022-03-20 12:05:46,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-03-20 12:05:46,848 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 12:05:46,848 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 12:05:46,848 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2022-03-20 12:05:46,848 INFO L403 AbstractCegarLoop]: === Iteration 53 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 12:05:46,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 12:05:46,849 INFO L85 PathProgramCache]: Analyzing trace with hash 667549759, now seen corresponding path program 1 times [2022-03-20 12:05:46,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 12:05:46,849 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155110840] [2022-03-20 12:05:46,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 12:05:46,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 12:05:46,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:05:46,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 12:05:46,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:05:46,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 12:05:46,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:05:46,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 12:05:46,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:05:46,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-20 12:05:46,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:05:47,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-20 12:05:47,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:05:47,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-03-20 12:05:47,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:05:47,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-20 12:05:47,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:05:47,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 12:05:47,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 12:05:47,188 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155110840] [2022-03-20 12:05:47,188 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [155110840] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 12:05:47,188 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 12:05:47,188 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-20 12:05:47,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697665327] [2022-03-20 12:05:47,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 12:05:47,188 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-20 12:05:47,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 12:05:47,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-20 12:05:47,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=296, Unknown=0, NotChecked=0, Total=342 [2022-03-20 12:05:47,189 INFO L87 Difference]: Start difference. First operand 707 states and 881 transitions. Second operand has 19 states, 19 states have (on average 2.789473684210526) internal successors, (53), 9 states have internal predecessors, (53), 2 states have call successors, (9), 8 states have call predecessors, (9), 5 states have return successors, (7), 5 states have call predecessors, (7), 1 states have call successors, (7) [2022-03-20 12:05:48,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 12:05:48,864 INFO L93 Difference]: Finished difference Result 724 states and 899 transitions. [2022-03-20 12:05:48,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-03-20 12:05:48,864 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.789473684210526) internal successors, (53), 9 states have internal predecessors, (53), 2 states have call successors, (9), 8 states have call predecessors, (9), 5 states have return successors, (7), 5 states have call predecessors, (7), 1 states have call successors, (7) Word has length 69 [2022-03-20 12:05:48,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 12:05:48,866 INFO L225 Difference]: With dead ends: 724 [2022-03-20 12:05:48,866 INFO L226 Difference]: Without dead ends: 695 [2022-03-20 12:05:48,866 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=54, Invalid=366, Unknown=0, NotChecked=0, Total=420 [2022-03-20 12:05:48,866 INFO L913 BasicCegarLoop]: 417 mSDtfsCounter, 467 mSDsluCounter, 1518 mSDsCounter, 0 mSdLazyCounter, 3925 mSolverCounterSat, 162 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 469 SdHoareTripleChecker+Valid, 1935 SdHoareTripleChecker+Invalid, 4087 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 162 IncrementalHoareTripleChecker+Valid, 3925 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-03-20 12:05:48,867 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [469 Valid, 1935 Invalid, 4087 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [162 Valid, 3925 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-03-20 12:05:48,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 695 states. [2022-03-20 12:05:48,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 695 to 695. [2022-03-20 12:05:48,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 695 states, 549 states have (on average 1.2604735883424407) internal successors, (692), 564 states have internal predecessors, (692), 74 states have call successors, (74), 50 states have call predecessors, (74), 71 states have return successors, (99), 89 states have call predecessors, (99), 69 states have call successors, (99) [2022-03-20 12:05:48,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 695 states to 695 states and 865 transitions. [2022-03-20 12:05:48,925 INFO L78 Accepts]: Start accepts. Automaton has 695 states and 865 transitions. Word has length 69 [2022-03-20 12:05:48,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 12:05:48,925 INFO L478 AbstractCegarLoop]: Abstraction has 695 states and 865 transitions. [2022-03-20 12:05:48,925 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.789473684210526) internal successors, (53), 9 states have internal predecessors, (53), 2 states have call successors, (9), 8 states have call predecessors, (9), 5 states have return successors, (7), 5 states have call predecessors, (7), 1 states have call successors, (7) [2022-03-20 12:05:48,925 INFO L276 IsEmpty]: Start isEmpty. Operand 695 states and 865 transitions. [2022-03-20 12:05:48,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-03-20 12:05:48,926 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 12:05:48,926 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 12:05:48,926 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2022-03-20 12:05:48,926 INFO L403 AbstractCegarLoop]: === Iteration 54 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 12:05:48,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 12:05:48,927 INFO L85 PathProgramCache]: Analyzing trace with hash -914202014, now seen corresponding path program 1 times [2022-03-20 12:05:48,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 12:05:48,927 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780522009] [2022-03-20 12:05:48,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 12:05:48,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 12:05:48,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:05:48,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 12:05:48,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:05:49,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 12:05:49,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:05:49,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 12:05:49,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:05:49,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-20 12:05:49,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:05:49,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-20 12:05:49,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:05:49,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-03-20 12:05:49,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:05:49,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-03-20 12:05:49,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:05:49,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 12:05:49,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 12:05:49,107 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780522009] [2022-03-20 12:05:49,107 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1780522009] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 12:05:49,107 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 12:05:49,107 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-20 12:05:49,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022117713] [2022-03-20 12:05:49,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 12:05:49,108 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-20 12:05:49,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 12:05:49,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-20 12:05:49,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2022-03-20 12:05:49,108 INFO L87 Difference]: Start difference. First operand 695 states and 865 transitions. Second operand has 12 states, 12 states have (on average 4.416666666666667) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-03-20 12:05:50,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 12:05:50,161 INFO L93 Difference]: Finished difference Result 729 states and 900 transitions. [2022-03-20 12:05:50,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-20 12:05:50,162 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.416666666666667) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 69 [2022-03-20 12:05:50,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 12:05:50,163 INFO L225 Difference]: With dead ends: 729 [2022-03-20 12:05:50,163 INFO L226 Difference]: Without dead ends: 690 [2022-03-20 12:05:50,164 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2022-03-20 12:05:50,164 INFO L913 BasicCegarLoop]: 398 mSDtfsCounter, 495 mSDsluCounter, 522 mSDsCounter, 0 mSdLazyCounter, 1279 mSolverCounterSat, 167 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 497 SdHoareTripleChecker+Valid, 920 SdHoareTripleChecker+Invalid, 1446 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 167 IncrementalHoareTripleChecker+Valid, 1279 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-20 12:05:50,164 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [497 Valid, 920 Invalid, 1446 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [167 Valid, 1279 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-20 12:05:50,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 690 states. [2022-03-20 12:05:50,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 690 to 690. [2022-03-20 12:05:50,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 690 states, 545 states have (on average 1.2605504587155962) internal successors, (687), 560 states have internal predecessors, (687), 73 states have call successors, (73), 50 states have call predecessors, (73), 71 states have return successors, (98), 88 states have call predecessors, (98), 68 states have call successors, (98) [2022-03-20 12:05:50,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 690 states to 690 states and 858 transitions. [2022-03-20 12:05:50,245 INFO L78 Accepts]: Start accepts. Automaton has 690 states and 858 transitions. Word has length 69 [2022-03-20 12:05:50,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 12:05:50,245 INFO L478 AbstractCegarLoop]: Abstraction has 690 states and 858 transitions. [2022-03-20 12:05:50,245 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.416666666666667) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-03-20 12:05:50,245 INFO L276 IsEmpty]: Start isEmpty. Operand 690 states and 858 transitions. [2022-03-20 12:05:50,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-03-20 12:05:50,246 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 12:05:50,246 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 12:05:50,246 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2022-03-20 12:05:50,246 INFO L403 AbstractCegarLoop]: === Iteration 55 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 12:05:50,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 12:05:50,247 INFO L85 PathProgramCache]: Analyzing trace with hash -761466943, now seen corresponding path program 1 times [2022-03-20 12:05:50,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 12:05:50,247 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231196366] [2022-03-20 12:05:50,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 12:05:50,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 12:05:50,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:05:50,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 12:05:50,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:05:50,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 12:05:50,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:05:50,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 12:05:50,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:05:50,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-20 12:05:50,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:05:50,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-20 12:05:50,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:05:50,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-20 12:05:50,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:05:50,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-03-20 12:05:50,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:05:50,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 12:05:50,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 12:05:50,484 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231196366] [2022-03-20 12:05:50,484 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1231196366] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 12:05:50,484 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 12:05:50,484 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-03-20 12:05:50,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699392868] [2022-03-20 12:05:50,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 12:05:50,484 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-03-20 12:05:50,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 12:05:50,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-03-20 12:05:50,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=256, Unknown=0, NotChecked=0, Total=306 [2022-03-20 12:05:50,485 INFO L87 Difference]: Start difference. First operand 690 states and 858 transitions. Second operand has 18 states, 18 states have (on average 2.9444444444444446) internal successors, (53), 8 states have internal predecessors, (53), 3 states have call successors, (9), 9 states have call predecessors, (9), 4 states have return successors, (7), 5 states have call predecessors, (7), 2 states have call successors, (7) [2022-03-20 12:05:52,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 12:05:52,212 INFO L93 Difference]: Finished difference Result 717 states and 888 transitions. [2022-03-20 12:05:52,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-03-20 12:05:52,212 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.9444444444444446) internal successors, (53), 8 states have internal predecessors, (53), 3 states have call successors, (9), 9 states have call predecessors, (9), 4 states have return successors, (7), 5 states have call predecessors, (7), 2 states have call successors, (7) Word has length 69 [2022-03-20 12:05:52,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 12:05:52,214 INFO L225 Difference]: With dead ends: 717 [2022-03-20 12:05:52,214 INFO L226 Difference]: Without dead ends: 687 [2022-03-20 12:05:52,215 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=96, Invalid=456, Unknown=0, NotChecked=0, Total=552 [2022-03-20 12:05:52,215 INFO L913 BasicCegarLoop]: 413 mSDtfsCounter, 702 mSDsluCounter, 1465 mSDsCounter, 0 mSdLazyCounter, 3392 mSolverCounterSat, 232 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 705 SdHoareTripleChecker+Valid, 1878 SdHoareTripleChecker+Invalid, 3624 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 232 IncrementalHoareTripleChecker+Valid, 3392 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-03-20 12:05:52,215 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [705 Valid, 1878 Invalid, 3624 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [232 Valid, 3392 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-03-20 12:05:52,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 687 states. [2022-03-20 12:05:52,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 687 to 687. [2022-03-20 12:05:52,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 687 states, 543 states have (on average 1.2596685082872927) internal successors, (684), 558 states have internal predecessors, (684), 72 states have call successors, (72), 50 states have call predecessors, (72), 71 states have return successors, (97), 87 states have call predecessors, (97), 67 states have call successors, (97) [2022-03-20 12:05:52,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 687 states to 687 states and 853 transitions. [2022-03-20 12:05:52,273 INFO L78 Accepts]: Start accepts. Automaton has 687 states and 853 transitions. Word has length 69 [2022-03-20 12:05:52,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 12:05:52,274 INFO L478 AbstractCegarLoop]: Abstraction has 687 states and 853 transitions. [2022-03-20 12:05:52,274 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.9444444444444446) internal successors, (53), 8 states have internal predecessors, (53), 3 states have call successors, (9), 9 states have call predecessors, (9), 4 states have return successors, (7), 5 states have call predecessors, (7), 2 states have call successors, (7) [2022-03-20 12:05:52,274 INFO L276 IsEmpty]: Start isEmpty. Operand 687 states and 853 transitions. [2022-03-20 12:05:52,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-03-20 12:05:52,275 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 12:05:52,275 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 12:05:52,275 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2022-03-20 12:05:52,275 INFO L403 AbstractCegarLoop]: === Iteration 56 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 12:05:52,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 12:05:52,275 INFO L85 PathProgramCache]: Analyzing trace with hash 1045116325, now seen corresponding path program 1 times [2022-03-20 12:05:52,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 12:05:52,275 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751321729] [2022-03-20 12:05:52,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 12:05:52,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 12:05:52,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:05:52,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 12:05:52,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:05:52,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 12:05:52,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:05:52,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 12:05:52,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:05:52,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-20 12:05:52,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:05:52,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-03-20 12:05:52,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:05:52,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-03-20 12:05:52,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:05:52,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-20 12:05:52,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:05:52,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 12:05:52,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 12:05:52,457 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751321729] [2022-03-20 12:05:52,457 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [751321729] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 12:05:52,457 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 12:05:52,457 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-20 12:05:52,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675788125] [2022-03-20 12:05:52,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 12:05:52,458 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-20 12:05:52,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 12:05:52,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-20 12:05:52,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2022-03-20 12:05:52,458 INFO L87 Difference]: Start difference. First operand 687 states and 853 transitions. Second operand has 12 states, 12 states have (on average 4.416666666666667) internal successors, (53), 5 states have internal predecessors, (53), 3 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 4 states have call predecessors, (7), 2 states have call successors, (7) [2022-03-20 12:05:53,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 12:05:53,394 INFO L93 Difference]: Finished difference Result 746 states and 928 transitions. [2022-03-20 12:05:53,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-03-20 12:05:53,395 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.416666666666667) internal successors, (53), 5 states have internal predecessors, (53), 3 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 4 states have call predecessors, (7), 2 states have call successors, (7) Word has length 69 [2022-03-20 12:05:53,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 12:05:53,397 INFO L225 Difference]: With dead ends: 746 [2022-03-20 12:05:53,397 INFO L226 Difference]: Without dead ends: 742 [2022-03-20 12:05:53,397 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=137, Invalid=325, Unknown=0, NotChecked=0, Total=462 [2022-03-20 12:05:53,397 INFO L913 BasicCegarLoop]: 370 mSDtfsCounter, 1443 mSDsluCounter, 348 mSDsCounter, 0 mSdLazyCounter, 977 mSolverCounterSat, 462 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1450 SdHoareTripleChecker+Valid, 718 SdHoareTripleChecker+Invalid, 1439 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 462 IncrementalHoareTripleChecker+Valid, 977 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-20 12:05:53,397 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1450 Valid, 718 Invalid, 1439 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [462 Valid, 977 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-20 12:05:53,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 742 states. [2022-03-20 12:05:53,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 742 to 685. [2022-03-20 12:05:53,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 685 states, 541 states have (on average 1.2587800369685767) internal successors, (681), 556 states have internal predecessors, (681), 72 states have call successors, (72), 50 states have call predecessors, (72), 71 states have return successors, (97), 87 states have call predecessors, (97), 67 states have call successors, (97) [2022-03-20 12:05:53,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 685 states to 685 states and 850 transitions. [2022-03-20 12:05:53,463 INFO L78 Accepts]: Start accepts. Automaton has 685 states and 850 transitions. Word has length 69 [2022-03-20 12:05:53,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 12:05:53,464 INFO L478 AbstractCegarLoop]: Abstraction has 685 states and 850 transitions. [2022-03-20 12:05:53,464 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.416666666666667) internal successors, (53), 5 states have internal predecessors, (53), 3 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 4 states have call predecessors, (7), 2 states have call successors, (7) [2022-03-20 12:05:53,464 INFO L276 IsEmpty]: Start isEmpty. Operand 685 states and 850 transitions. [2022-03-20 12:05:53,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-03-20 12:05:53,465 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 12:05:53,465 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 12:05:53,465 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2022-03-20 12:05:53,465 INFO L403 AbstractCegarLoop]: === Iteration 57 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 12:05:53,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 12:05:53,465 INFO L85 PathProgramCache]: Analyzing trace with hash 1045148069, now seen corresponding path program 1 times [2022-03-20 12:05:53,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 12:05:53,466 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86820612] [2022-03-20 12:05:53,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 12:05:53,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 12:05:53,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:05:53,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 12:05:53,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:05:53,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 12:05:53,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:05:53,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 12:05:53,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:05:53,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-20 12:05:53,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:05:53,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-03-20 12:05:53,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:05:53,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-03-20 12:05:53,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:05:53,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-20 12:05:53,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:05:53,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 12:05:53,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 12:05:53,693 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86820612] [2022-03-20 12:05:53,693 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [86820612] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 12:05:53,693 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 12:05:53,693 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-03-20 12:05:53,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738426683] [2022-03-20 12:05:53,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 12:05:53,693 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-03-20 12:05:53,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 12:05:53,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-03-20 12:05:53,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=256, Unknown=0, NotChecked=0, Total=306 [2022-03-20 12:05:53,694 INFO L87 Difference]: Start difference. First operand 685 states and 850 transitions. Second operand has 18 states, 18 states have (on average 2.9444444444444446) internal successors, (53), 8 states have internal predecessors, (53), 2 states have call successors, (9), 9 states have call predecessors, (9), 4 states have return successors, (7), 4 states have call predecessors, (7), 1 states have call successors, (7) [2022-03-20 12:05:55,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 12:05:55,353 INFO L93 Difference]: Finished difference Result 695 states and 859 transitions. [2022-03-20 12:05:55,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-03-20 12:05:55,353 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.9444444444444446) internal successors, (53), 8 states have internal predecessors, (53), 2 states have call successors, (9), 9 states have call predecessors, (9), 4 states have return successors, (7), 4 states have call predecessors, (7), 1 states have call successors, (7) Word has length 69 [2022-03-20 12:05:55,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 12:05:55,355 INFO L225 Difference]: With dead ends: 695 [2022-03-20 12:05:55,355 INFO L226 Difference]: Without dead ends: 633 [2022-03-20 12:05:55,355 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=100, Invalid=656, Unknown=0, NotChecked=0, Total=756 [2022-03-20 12:05:55,355 INFO L913 BasicCegarLoop]: 361 mSDtfsCounter, 330 mSDsluCounter, 1138 mSDsCounter, 0 mSdLazyCounter, 3541 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 340 SdHoareTripleChecker+Valid, 1499 SdHoareTripleChecker+Invalid, 3647 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 3541 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-03-20 12:05:55,356 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [340 Valid, 1499 Invalid, 3647 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 3541 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-03-20 12:05:55,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 633 states. [2022-03-20 12:05:55,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 633 to 629. [2022-03-20 12:05:55,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 629 states, 495 states have (on average 1.2505050505050506) internal successors, (619), 508 states have internal predecessors, (619), 70 states have call successors, (70), 48 states have call predecessors, (70), 63 states have return successors, (89), 79 states have call predecessors, (89), 65 states have call successors, (89) [2022-03-20 12:05:55,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 629 states to 629 states and 778 transitions. [2022-03-20 12:05:55,408 INFO L78 Accepts]: Start accepts. Automaton has 629 states and 778 transitions. Word has length 69 [2022-03-20 12:05:55,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 12:05:55,408 INFO L478 AbstractCegarLoop]: Abstraction has 629 states and 778 transitions. [2022-03-20 12:05:55,408 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.9444444444444446) internal successors, (53), 8 states have internal predecessors, (53), 2 states have call successors, (9), 9 states have call predecessors, (9), 4 states have return successors, (7), 4 states have call predecessors, (7), 1 states have call successors, (7) [2022-03-20 12:05:55,408 INFO L276 IsEmpty]: Start isEmpty. Operand 629 states and 778 transitions. [2022-03-20 12:05:55,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-03-20 12:05:55,409 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 12:05:55,409 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 12:05:55,410 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2022-03-20 12:05:55,410 INFO L403 AbstractCegarLoop]: === Iteration 58 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 12:05:55,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 12:05:55,410 INFO L85 PathProgramCache]: Analyzing trace with hash 1513722750, now seen corresponding path program 1 times [2022-03-20 12:05:55,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 12:05:55,410 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587516740] [2022-03-20 12:05:55,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 12:05:55,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 12:05:55,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:05:55,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 12:05:55,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:05:55,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 12:05:55,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:05:55,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 12:05:55,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:05:55,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-20 12:05:55,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:05:55,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-20 12:05:55,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:05:55,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-03-20 12:05:55,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:05:55,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-20 12:05:55,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:05:55,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-20 12:05:55,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:05:55,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 12:05:55,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 12:05:55,697 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587516740] [2022-03-20 12:05:55,697 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1587516740] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 12:05:55,697 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 12:05:55,697 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-20 12:05:55,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057712840] [2022-03-20 12:05:55,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 12:05:55,698 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-20 12:05:55,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 12:05:55,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-20 12:05:55,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=359, Unknown=0, NotChecked=0, Total=420 [2022-03-20 12:05:55,698 INFO L87 Difference]: Start difference. First operand 629 states and 778 transitions. Second operand has 21 states, 20 states have (on average 2.65) internal successors, (53), 10 states have internal predecessors, (53), 4 states have call successors, (10), 10 states have call predecessors, (10), 4 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) [2022-03-20 12:05:57,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 12:05:57,495 INFO L93 Difference]: Finished difference Result 662 states and 817 transitions. [2022-03-20 12:05:57,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-03-20 12:05:57,495 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 2.65) internal successors, (53), 10 states have internal predecessors, (53), 4 states have call successors, (10), 10 states have call predecessors, (10), 4 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) Word has length 71 [2022-03-20 12:05:57,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 12:05:57,496 INFO L225 Difference]: With dead ends: 662 [2022-03-20 12:05:57,496 INFO L226 Difference]: Without dead ends: 635 [2022-03-20 12:05:57,497 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=120, Invalid=692, Unknown=0, NotChecked=0, Total=812 [2022-03-20 12:05:57,497 INFO L913 BasicCegarLoop]: 408 mSDtfsCounter, 920 mSDsluCounter, 1475 mSDsCounter, 0 mSdLazyCounter, 3543 mSolverCounterSat, 326 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 922 SdHoareTripleChecker+Valid, 1883 SdHoareTripleChecker+Invalid, 3869 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 326 IncrementalHoareTripleChecker+Valid, 3543 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-03-20 12:05:57,497 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [922 Valid, 1883 Invalid, 3869 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [326 Valid, 3543 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-03-20 12:05:57,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 635 states. [2022-03-20 12:05:57,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 635 to 631. [2022-03-20 12:05:57,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 631 states, 497 states have (on average 1.243460764587525) internal successors, (618), 510 states have internal predecessors, (618), 70 states have call successors, (70), 48 states have call predecessors, (70), 63 states have return successors, (89), 79 states have call predecessors, (89), 65 states have call successors, (89) [2022-03-20 12:05:57,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 631 states to 631 states and 777 transitions. [2022-03-20 12:05:57,549 INFO L78 Accepts]: Start accepts. Automaton has 631 states and 777 transitions. Word has length 71 [2022-03-20 12:05:57,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 12:05:57,549 INFO L478 AbstractCegarLoop]: Abstraction has 631 states and 777 transitions. [2022-03-20 12:05:57,549 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 2.65) internal successors, (53), 10 states have internal predecessors, (53), 4 states have call successors, (10), 10 states have call predecessors, (10), 4 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) [2022-03-20 12:05:57,549 INFO L276 IsEmpty]: Start isEmpty. Operand 631 states and 777 transitions. [2022-03-20 12:05:57,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-03-20 12:05:57,550 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 12:05:57,550 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 12:05:57,550 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2022-03-20 12:05:57,550 INFO L403 AbstractCegarLoop]: === Iteration 59 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 12:05:57,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 12:05:57,550 INFO L85 PathProgramCache]: Analyzing trace with hash 1880837203, now seen corresponding path program 1 times [2022-03-20 12:05:57,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 12:05:57,550 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945930715] [2022-03-20 12:05:57,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 12:05:57,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 12:05:57,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:05:57,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 12:05:57,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:05:57,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 12:05:57,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:05:57,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 12:05:57,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:05:57,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-20 12:05:57,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:05:57,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-20 12:05:57,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:05:57,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-20 12:05:57,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:05:57,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-03-20 12:05:57,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:05:57,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-03-20 12:05:57,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:05:57,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-20 12:05:57,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:05:57,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 12:05:57,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 12:05:57,846 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1945930715] [2022-03-20 12:05:57,846 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1945930715] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 12:05:57,846 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 12:05:57,846 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-20 12:05:57,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463805558] [2022-03-20 12:05:57,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 12:05:57,847 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-20 12:05:57,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 12:05:57,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-20 12:05:57,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=359, Unknown=0, NotChecked=0, Total=420 [2022-03-20 12:05:57,847 INFO L87 Difference]: Start difference. First operand 631 states and 777 transitions. Second operand has 21 states, 20 states have (on average 2.7) internal successors, (54), 10 states have internal predecessors, (54), 4 states have call successors, (11), 10 states have call predecessors, (11), 4 states have return successors, (9), 5 states have call predecessors, (9), 3 states have call successors, (9) [2022-03-20 12:05:59,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 12:05:59,285 INFO L93 Difference]: Finished difference Result 657 states and 805 transitions. [2022-03-20 12:05:59,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-03-20 12:05:59,287 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 2.7) internal successors, (54), 10 states have internal predecessors, (54), 4 states have call successors, (11), 10 states have call predecessors, (11), 4 states have return successors, (9), 5 states have call predecessors, (9), 3 states have call successors, (9) Word has length 74 [2022-03-20 12:05:59,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 12:05:59,288 INFO L225 Difference]: With dead ends: 657 [2022-03-20 12:05:59,288 INFO L226 Difference]: Without dead ends: 633 [2022-03-20 12:05:59,289 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=120, Invalid=692, Unknown=0, NotChecked=0, Total=812 [2022-03-20 12:05:59,289 INFO L913 BasicCegarLoop]: 403 mSDtfsCounter, 695 mSDsluCounter, 1635 mSDsCounter, 0 mSdLazyCounter, 3836 mSolverCounterSat, 239 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 697 SdHoareTripleChecker+Valid, 2038 SdHoareTripleChecker+Invalid, 4075 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 239 IncrementalHoareTripleChecker+Valid, 3836 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-03-20 12:05:59,289 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [697 Valid, 2038 Invalid, 4075 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [239 Valid, 3836 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-03-20 12:05:59,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 633 states. [2022-03-20 12:05:59,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 633 to 629. [2022-03-20 12:05:59,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 629 states, 496 states have (on average 1.2419354838709677) internal successors, (616), 509 states have internal predecessors, (616), 69 states have call successors, (69), 48 states have call predecessors, (69), 63 states have return successors, (88), 78 states have call predecessors, (88), 64 states have call successors, (88) [2022-03-20 12:05:59,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 629 states to 629 states and 773 transitions. [2022-03-20 12:05:59,361 INFO L78 Accepts]: Start accepts. Automaton has 629 states and 773 transitions. Word has length 74 [2022-03-20 12:05:59,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 12:05:59,361 INFO L478 AbstractCegarLoop]: Abstraction has 629 states and 773 transitions. [2022-03-20 12:05:59,361 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 2.7) internal successors, (54), 10 states have internal predecessors, (54), 4 states have call successors, (11), 10 states have call predecessors, (11), 4 states have return successors, (9), 5 states have call predecessors, (9), 3 states have call successors, (9) [2022-03-20 12:05:59,361 INFO L276 IsEmpty]: Start isEmpty. Operand 629 states and 773 transitions. [2022-03-20 12:05:59,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-03-20 12:05:59,362 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 12:05:59,362 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 12:05:59,362 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2022-03-20 12:05:59,362 INFO L403 AbstractCegarLoop]: === Iteration 60 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 12:05:59,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 12:05:59,363 INFO L85 PathProgramCache]: Analyzing trace with hash 488230751, now seen corresponding path program 1 times [2022-03-20 12:05:59,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 12:05:59,363 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427063771] [2022-03-20 12:05:59,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 12:05:59,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 12:05:59,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:05:59,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 12:05:59,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:05:59,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 12:05:59,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:05:59,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 12:05:59,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:05:59,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-20 12:05:59,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:05:59,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-20 12:05:59,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:05:59,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-03-20 12:05:59,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:05:59,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-20 12:05:59,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:05:59,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-20 12:05:59,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:05:59,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 12:05:59,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 12:05:59,543 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427063771] [2022-03-20 12:05:59,543 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1427063771] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 12:05:59,543 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 12:05:59,543 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-03-20 12:05:59,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825397462] [2022-03-20 12:05:59,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 12:05:59,543 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-03-20 12:05:59,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 12:05:59,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-03-20 12:05:59,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2022-03-20 12:05:59,544 INFO L87 Difference]: Start difference. First operand 629 states and 773 transitions. Second operand has 13 states, 13 states have (on average 4.076923076923077) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-03-20 12:06:00,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 12:06:00,655 INFO L93 Difference]: Finished difference Result 667 states and 812 transitions. [2022-03-20 12:06:00,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-20 12:06:00,655 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.076923076923077) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 71 [2022-03-20 12:06:00,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 12:06:00,657 INFO L225 Difference]: With dead ends: 667 [2022-03-20 12:06:00,657 INFO L226 Difference]: Without dead ends: 622 [2022-03-20 12:06:00,657 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2022-03-20 12:06:00,658 INFO L913 BasicCegarLoop]: 389 mSDtfsCounter, 258 mSDsluCounter, 599 mSDsCounter, 0 mSdLazyCounter, 1480 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 259 SdHoareTripleChecker+Valid, 988 SdHoareTripleChecker+Invalid, 1566 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 1480 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-03-20 12:06:00,658 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [259 Valid, 988 Invalid, 1566 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 1480 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-03-20 12:06:00,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 622 states. [2022-03-20 12:06:00,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 622 to 622. [2022-03-20 12:06:00,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 622 states, 490 states have (on average 1.2428571428571429) internal successors, (609), 503 states have internal predecessors, (609), 68 states have call successors, (68), 48 states have call predecessors, (68), 63 states have return successors, (86), 77 states have call predecessors, (86), 63 states have call successors, (86) [2022-03-20 12:06:00,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 622 states to 622 states and 763 transitions. [2022-03-20 12:06:00,713 INFO L78 Accepts]: Start accepts. Automaton has 622 states and 763 transitions. Word has length 71 [2022-03-20 12:06:00,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 12:06:00,714 INFO L478 AbstractCegarLoop]: Abstraction has 622 states and 763 transitions. [2022-03-20 12:06:00,714 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.076923076923077) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-03-20 12:06:00,714 INFO L276 IsEmpty]: Start isEmpty. Operand 622 states and 763 transitions. [2022-03-20 12:06:00,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-03-20 12:06:00,715 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 12:06:00,715 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 12:06:00,715 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2022-03-20 12:06:00,715 INFO L403 AbstractCegarLoop]: === Iteration 61 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 12:06:00,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 12:06:00,716 INFO L85 PathProgramCache]: Analyzing trace with hash -756614912, now seen corresponding path program 1 times [2022-03-20 12:06:00,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 12:06:00,716 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658584657] [2022-03-20 12:06:00,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 12:06:00,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 12:06:00,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:06:00,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 12:06:00,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:06:00,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 12:06:00,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:06:00,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 12:06:00,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:06:00,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-20 12:06:00,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:06:00,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-20 12:06:00,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:06:00,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-03-20 12:06:00,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:06:00,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-20 12:06:00,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:06:00,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-20 12:06:00,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:06:00,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 12:06:00,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 12:06:00,906 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658584657] [2022-03-20 12:06:00,907 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [658584657] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 12:06:00,907 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 12:06:00,907 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-03-20 12:06:00,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555977637] [2022-03-20 12:06:00,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 12:06:00,907 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-03-20 12:06:00,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 12:06:00,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-03-20 12:06:00,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2022-03-20 12:06:00,908 INFO L87 Difference]: Start difference. First operand 622 states and 763 transitions. Second operand has 13 states, 13 states have (on average 4.076923076923077) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-03-20 12:06:01,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 12:06:01,924 INFO L93 Difference]: Finished difference Result 660 states and 802 transitions. [2022-03-20 12:06:01,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-20 12:06:01,925 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.076923076923077) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 71 [2022-03-20 12:06:01,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 12:06:01,926 INFO L225 Difference]: With dead ends: 660 [2022-03-20 12:06:01,926 INFO L226 Difference]: Without dead ends: 616 [2022-03-20 12:06:01,927 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2022-03-20 12:06:01,927 INFO L913 BasicCegarLoop]: 381 mSDtfsCounter, 1050 mSDsluCounter, 510 mSDsCounter, 0 mSdLazyCounter, 1190 mSolverCounterSat, 364 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1051 SdHoareTripleChecker+Valid, 891 SdHoareTripleChecker+Invalid, 1554 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 364 IncrementalHoareTripleChecker+Valid, 1190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-20 12:06:01,927 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1051 Valid, 891 Invalid, 1554 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [364 Valid, 1190 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-20 12:06:01,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 616 states. [2022-03-20 12:06:01,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 616 to 616. [2022-03-20 12:06:01,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 616 states, 485 states have (on average 1.243298969072165) internal successors, (603), 498 states have internal predecessors, (603), 67 states have call successors, (67), 48 states have call predecessors, (67), 63 states have return successors, (85), 76 states have call predecessors, (85), 62 states have call successors, (85) [2022-03-20 12:06:01,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 616 states to 616 states and 755 transitions. [2022-03-20 12:06:01,980 INFO L78 Accepts]: Start accepts. Automaton has 616 states and 755 transitions. Word has length 71 [2022-03-20 12:06:01,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 12:06:01,980 INFO L478 AbstractCegarLoop]: Abstraction has 616 states and 755 transitions. [2022-03-20 12:06:01,981 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.076923076923077) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-03-20 12:06:01,981 INFO L276 IsEmpty]: Start isEmpty. Operand 616 states and 755 transitions. [2022-03-20 12:06:01,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-03-20 12:06:01,981 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 12:06:01,982 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 12:06:01,982 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2022-03-20 12:06:01,982 INFO L403 AbstractCegarLoop]: === Iteration 62 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 12:06:01,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 12:06:01,982 INFO L85 PathProgramCache]: Analyzing trace with hash 590503932, now seen corresponding path program 1 times [2022-03-20 12:06:01,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 12:06:01,982 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545813082] [2022-03-20 12:06:01,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 12:06:01,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 12:06:01,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:06:02,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 12:06:02,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:06:02,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 12:06:02,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:06:02,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 12:06:02,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:06:02,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-20 12:06:02,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:06:02,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-20 12:06:02,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:06:02,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-20 12:06:02,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:06:02,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 12:06:02,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:06:02,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-03-20 12:06:02,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:06:02,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-20 12:06:02,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:06:02,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 12:06:02,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 12:06:02,262 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545813082] [2022-03-20 12:06:02,262 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [545813082] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 12:06:02,262 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 12:06:02,262 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-20 12:06:02,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633456644] [2022-03-20 12:06:02,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 12:06:02,262 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-20 12:06:02,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 12:06:02,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-20 12:06:02,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=359, Unknown=0, NotChecked=0, Total=420 [2022-03-20 12:06:02,263 INFO L87 Difference]: Start difference. First operand 616 states and 755 transitions. Second operand has 21 states, 21 states have (on average 2.7142857142857144) internal successors, (57), 10 states have internal predecessors, (57), 4 states have call successors, (11), 10 states have call predecessors, (11), 4 states have return successors, (9), 5 states have call predecessors, (9), 3 states have call successors, (9) [2022-03-20 12:06:03,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 12:06:03,854 INFO L93 Difference]: Finished difference Result 640 states and 781 transitions. [2022-03-20 12:06:03,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-03-20 12:06:03,854 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.7142857142857144) internal successors, (57), 10 states have internal predecessors, (57), 4 states have call successors, (11), 10 states have call predecessors, (11), 4 states have return successors, (9), 5 states have call predecessors, (9), 3 states have call successors, (9) Word has length 77 [2022-03-20 12:06:03,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 12:06:03,856 INFO L225 Difference]: With dead ends: 640 [2022-03-20 12:06:03,856 INFO L226 Difference]: Without dead ends: 614 [2022-03-20 12:06:03,856 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=120, Invalid=692, Unknown=0, NotChecked=0, Total=812 [2022-03-20 12:06:03,856 INFO L913 BasicCegarLoop]: 385 mSDtfsCounter, 462 mSDsluCounter, 1532 mSDsCounter, 0 mSdLazyCounter, 3346 mSolverCounterSat, 160 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 464 SdHoareTripleChecker+Valid, 1917 SdHoareTripleChecker+Invalid, 3506 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 160 IncrementalHoareTripleChecker+Valid, 3346 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-03-20 12:06:03,856 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [464 Valid, 1917 Invalid, 3506 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [160 Valid, 3346 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-03-20 12:06:03,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 614 states. [2022-03-20 12:06:03,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 614 to 614. [2022-03-20 12:06:03,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 614 states, 483 states have (on average 1.2422360248447204) internal successors, (600), 496 states have internal predecessors, (600), 67 states have call successors, (67), 48 states have call predecessors, (67), 63 states have return successors, (85), 76 states have call predecessors, (85), 62 states have call successors, (85) [2022-03-20 12:06:03,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 614 states to 614 states and 752 transitions. [2022-03-20 12:06:03,907 INFO L78 Accepts]: Start accepts. Automaton has 614 states and 752 transitions. Word has length 77 [2022-03-20 12:06:03,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 12:06:03,907 INFO L478 AbstractCegarLoop]: Abstraction has 614 states and 752 transitions. [2022-03-20 12:06:03,907 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.7142857142857144) internal successors, (57), 10 states have internal predecessors, (57), 4 states have call successors, (11), 10 states have call predecessors, (11), 4 states have return successors, (9), 5 states have call predecessors, (9), 3 states have call successors, (9) [2022-03-20 12:06:03,907 INFO L276 IsEmpty]: Start isEmpty. Operand 614 states and 752 transitions. [2022-03-20 12:06:03,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-03-20 12:06:03,908 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 12:06:03,908 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 12:06:03,908 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2022-03-20 12:06:03,908 INFO L403 AbstractCegarLoop]: === Iteration 63 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 12:06:03,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 12:06:03,908 INFO L85 PathProgramCache]: Analyzing trace with hash -186895060, now seen corresponding path program 1 times [2022-03-20 12:06:03,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 12:06:03,909 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114128826] [2022-03-20 12:06:03,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 12:06:03,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 12:06:03,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:06:03,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 12:06:03,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:06:03,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 12:06:03,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:06:03,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 12:06:03,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:06:03,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-20 12:06:03,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:06:04,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-20 12:06:04,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:06:04,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-20 12:06:04,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:06:04,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 12:06:04,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:06:04,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-03-20 12:06:04,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:06:04,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-20 12:06:04,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:06:04,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 12:06:04,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 12:06:04,053 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114128826] [2022-03-20 12:06:04,053 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2114128826] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 12:06:04,054 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 12:06:04,054 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-03-20 12:06:04,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44084259] [2022-03-20 12:06:04,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 12:06:04,054 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-03-20 12:06:04,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 12:06:04,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-03-20 12:06:04,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2022-03-20 12:06:04,054 INFO L87 Difference]: Start difference. First operand 614 states and 752 transitions. Second operand has 13 states, 13 states have (on average 4.461538461538462) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (11), 10 states have call predecessors, (11), 3 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2022-03-20 12:06:04,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 12:06:04,807 INFO L93 Difference]: Finished difference Result 652 states and 791 transitions. [2022-03-20 12:06:04,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-20 12:06:04,807 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.461538461538462) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (11), 10 states have call predecessors, (11), 3 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) Word has length 78 [2022-03-20 12:06:04,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 12:06:04,809 INFO L225 Difference]: With dead ends: 652 [2022-03-20 12:06:04,809 INFO L226 Difference]: Without dead ends: 598 [2022-03-20 12:06:04,809 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2022-03-20 12:06:04,809 INFO L913 BasicCegarLoop]: 360 mSDtfsCounter, 236 mSDsluCounter, 595 mSDsCounter, 0 mSdLazyCounter, 1367 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 237 SdHoareTripleChecker+Valid, 955 SdHoareTripleChecker+Invalid, 1449 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 1367 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-20 12:06:04,810 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [237 Valid, 955 Invalid, 1449 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 1367 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-20 12:06:04,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 598 states. [2022-03-20 12:06:04,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 598 to 598. [2022-03-20 12:06:04,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 598 states, 470 states have (on average 1.2382978723404254) internal successors, (582), 483 states have internal predecessors, (582), 64 states have call successors, (64), 48 states have call predecessors, (64), 63 states have return successors, (81), 73 states have call predecessors, (81), 59 states have call successors, (81) [2022-03-20 12:06:04,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 598 states to 598 states and 727 transitions. [2022-03-20 12:06:04,860 INFO L78 Accepts]: Start accepts. Automaton has 598 states and 727 transitions. Word has length 78 [2022-03-20 12:06:04,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 12:06:04,861 INFO L478 AbstractCegarLoop]: Abstraction has 598 states and 727 transitions. [2022-03-20 12:06:04,861 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.461538461538462) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (11), 10 states have call predecessors, (11), 3 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2022-03-20 12:06:04,861 INFO L276 IsEmpty]: Start isEmpty. Operand 598 states and 727 transitions. [2022-03-20 12:06:04,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-03-20 12:06:04,862 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 12:06:04,862 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 12:06:04,862 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2022-03-20 12:06:04,862 INFO L403 AbstractCegarLoop]: === Iteration 64 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 12:06:04,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 12:06:04,862 INFO L85 PathProgramCache]: Analyzing trace with hash 355041746, now seen corresponding path program 1 times [2022-03-20 12:06:04,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 12:06:04,862 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425264088] [2022-03-20 12:06:04,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 12:06:04,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 12:06:04,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:06:04,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 12:06:04,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:06:04,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 12:06:04,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:06:04,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 12:06:04,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:06:04,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-20 12:06:04,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:06:04,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-20 12:06:04,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:06:05,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-03-20 12:06:05,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:06:05,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-20 12:06:05,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:06:05,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-20 12:06:05,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:06:05,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 12:06:05,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 12:06:05,046 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425264088] [2022-03-20 12:06:05,046 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1425264088] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 12:06:05,046 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 12:06:05,047 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-03-20 12:06:05,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329094611] [2022-03-20 12:06:05,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 12:06:05,047 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-03-20 12:06:05,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 12:06:05,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-03-20 12:06:05,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2022-03-20 12:06:05,050 INFO L87 Difference]: Start difference. First operand 598 states and 727 transitions. Second operand has 13 states, 13 states have (on average 4.230769230769231) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-03-20 12:06:05,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 12:06:05,737 INFO L93 Difference]: Finished difference Result 636 states and 766 transitions. [2022-03-20 12:06:05,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-20 12:06:05,737 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.230769230769231) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 73 [2022-03-20 12:06:05,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 12:06:05,738 INFO L225 Difference]: With dead ends: 636 [2022-03-20 12:06:05,738 INFO L226 Difference]: Without dead ends: 585 [2022-03-20 12:06:05,739 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2022-03-20 12:06:05,739 INFO L913 BasicCegarLoop]: 349 mSDtfsCounter, 738 mSDsluCounter, 617 mSDsCounter, 0 mSdLazyCounter, 1129 mSolverCounterSat, 260 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 739 SdHoareTripleChecker+Valid, 966 SdHoareTripleChecker+Invalid, 1389 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 260 IncrementalHoareTripleChecker+Valid, 1129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-20 12:06:05,739 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [739 Valid, 966 Invalid, 1389 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [260 Valid, 1129 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-20 12:06:05,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 585 states. [2022-03-20 12:06:05,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 585 to 585. [2022-03-20 12:06:05,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 585 states, 458 states have (on average 1.2336244541484715) internal successors, (565), 471 states have internal predecessors, (565), 63 states have call successors, (63), 48 states have call predecessors, (63), 63 states have return successors, (80), 72 states have call predecessors, (80), 58 states have call successors, (80) [2022-03-20 12:06:05,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 585 states to 585 states and 708 transitions. [2022-03-20 12:06:05,785 INFO L78 Accepts]: Start accepts. Automaton has 585 states and 708 transitions. Word has length 73 [2022-03-20 12:06:05,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 12:06:05,785 INFO L478 AbstractCegarLoop]: Abstraction has 585 states and 708 transitions. [2022-03-20 12:06:05,785 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.230769230769231) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-03-20 12:06:05,785 INFO L276 IsEmpty]: Start isEmpty. Operand 585 states and 708 transitions. [2022-03-20 12:06:05,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-03-20 12:06:05,786 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 12:06:05,786 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 12:06:05,786 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2022-03-20 12:06:05,786 INFO L403 AbstractCegarLoop]: === Iteration 65 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 12:06:05,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 12:06:05,787 INFO L85 PathProgramCache]: Analyzing trace with hash -1118214243, now seen corresponding path program 1 times [2022-03-20 12:06:05,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 12:06:05,787 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709238025] [2022-03-20 12:06:05,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 12:06:05,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 12:06:05,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:06:05,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 12:06:05,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:06:05,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 12:06:05,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:06:05,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 12:06:05,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:06:05,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-20 12:06:05,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:06:05,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-03-20 12:06:05,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:06:05,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-03-20 12:06:05,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:06:06,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-20 12:06:06,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:06:06,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-20 12:06:06,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:06:06,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 12:06:06,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 12:06:06,063 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709238025] [2022-03-20 12:06:06,063 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1709238025] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 12:06:06,063 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 12:06:06,063 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-20 12:06:06,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203859276] [2022-03-20 12:06:06,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 12:06:06,063 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-20 12:06:06,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 12:06:06,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-20 12:06:06,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=276, Unknown=0, NotChecked=0, Total=342 [2022-03-20 12:06:06,064 INFO L87 Difference]: Start difference. First operand 585 states and 708 transitions. Second operand has 19 states, 19 states have (on average 2.8947368421052633) internal successors, (55), 10 states have internal predecessors, (55), 5 states have call successors, (10), 10 states have call predecessors, (10), 4 states have return successors, (8), 6 states have call predecessors, (8), 4 states have call successors, (8) [2022-03-20 12:06:08,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 12:06:08,984 INFO L93 Difference]: Finished difference Result 1254 states and 1513 transitions. [2022-03-20 12:06:08,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-03-20 12:06:08,985 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.8947368421052633) internal successors, (55), 10 states have internal predecessors, (55), 5 states have call successors, (10), 10 states have call predecessors, (10), 4 states have return successors, (8), 6 states have call predecessors, (8), 4 states have call successors, (8) Word has length 73 [2022-03-20 12:06:08,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 12:06:08,987 INFO L225 Difference]: With dead ends: 1254 [2022-03-20 12:06:08,987 INFO L226 Difference]: Without dead ends: 1109 [2022-03-20 12:06:08,988 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 644 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=614, Invalid=2356, Unknown=0, NotChecked=0, Total=2970 [2022-03-20 12:06:08,988 INFO L913 BasicCegarLoop]: 354 mSDtfsCounter, 2190 mSDsluCounter, 819 mSDsCounter, 0 mSdLazyCounter, 3481 mSolverCounterSat, 700 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2194 SdHoareTripleChecker+Valid, 1173 SdHoareTripleChecker+Invalid, 4181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 700 IncrementalHoareTripleChecker+Valid, 3481 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-03-20 12:06:08,988 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [2194 Valid, 1173 Invalid, 4181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [700 Valid, 3481 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-03-20 12:06:08,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1109 states. [2022-03-20 12:06:09,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1109 to 916. [2022-03-20 12:06:09,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 916 states, 723 states have (on average 1.2572614107883817) internal successors, (909), 743 states have internal predecessors, (909), 95 states have call successors, (95), 76 states have call predecessors, (95), 97 states have return successors, (125), 103 states have call predecessors, (125), 90 states have call successors, (125) [2022-03-20 12:06:09,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 916 states to 916 states and 1129 transitions. [2022-03-20 12:06:09,078 INFO L78 Accepts]: Start accepts. Automaton has 916 states and 1129 transitions. Word has length 73 [2022-03-20 12:06:09,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 12:06:09,078 INFO L478 AbstractCegarLoop]: Abstraction has 916 states and 1129 transitions. [2022-03-20 12:06:09,078 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.8947368421052633) internal successors, (55), 10 states have internal predecessors, (55), 5 states have call successors, (10), 10 states have call predecessors, (10), 4 states have return successors, (8), 6 states have call predecessors, (8), 4 states have call successors, (8) [2022-03-20 12:06:09,078 INFO L276 IsEmpty]: Start isEmpty. Operand 916 states and 1129 transitions. [2022-03-20 12:06:09,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-03-20 12:06:09,079 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 12:06:09,079 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 12:06:09,080 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2022-03-20 12:06:09,080 INFO L403 AbstractCegarLoop]: === Iteration 66 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 12:06:09,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 12:06:09,081 INFO L85 PathProgramCache]: Analyzing trace with hash 1368905532, now seen corresponding path program 1 times [2022-03-20 12:06:09,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 12:06:09,081 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814436142] [2022-03-20 12:06:09,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 12:06:09,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 12:06:09,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:06:09,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 12:06:09,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:06:09,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 12:06:09,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:06:09,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 12:06:09,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:06:09,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-20 12:06:09,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:06:09,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-03-20 12:06:09,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:06:09,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-03-20 12:06:09,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:06:09,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-20 12:06:09,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:06:09,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-20 12:06:09,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:06:09,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 12:06:09,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 12:06:09,283 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814436142] [2022-03-20 12:06:09,283 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814436142] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 12:06:09,283 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 12:06:09,283 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-03-20 12:06:09,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499708596] [2022-03-20 12:06:09,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 12:06:09,283 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-03-20 12:06:09,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 12:06:09,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-03-20 12:06:09,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2022-03-20 12:06:09,284 INFO L87 Difference]: Start difference. First operand 916 states and 1129 transitions. Second operand has 14 states, 14 states have (on average 3.9285714285714284) internal successors, (55), 6 states have internal predecessors, (55), 5 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2022-03-20 12:06:10,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 12:06:10,481 INFO L93 Difference]: Finished difference Result 1157 states and 1397 transitions. [2022-03-20 12:06:10,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-03-20 12:06:10,481 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.9285714285714284) internal successors, (55), 6 states have internal predecessors, (55), 5 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) Word has length 73 [2022-03-20 12:06:10,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 12:06:10,483 INFO L225 Difference]: With dead ends: 1157 [2022-03-20 12:06:10,483 INFO L226 Difference]: Without dead ends: 1052 [2022-03-20 12:06:10,484 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=189, Invalid=567, Unknown=0, NotChecked=0, Total=756 [2022-03-20 12:06:10,484 INFO L913 BasicCegarLoop]: 579 mSDtfsCounter, 2009 mSDsluCounter, 559 mSDsCounter, 0 mSdLazyCounter, 1613 mSolverCounterSat, 636 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2013 SdHoareTripleChecker+Valid, 1138 SdHoareTripleChecker+Invalid, 2249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 636 IncrementalHoareTripleChecker+Valid, 1613 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-03-20 12:06:10,484 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [2013 Valid, 1138 Invalid, 2249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [636 Valid, 1613 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-03-20 12:06:10,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1052 states. [2022-03-20 12:06:10,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1052 to 993. [2022-03-20 12:06:10,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 993 states, 782 states have (on average 1.2429667519181586) internal successors, (972), 798 states have internal predecessors, (972), 107 states have call successors, (107), 80 states have call predecessors, (107), 103 states have return successors, (138), 119 states have call predecessors, (138), 102 states have call successors, (138) [2022-03-20 12:06:10,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 993 states to 993 states and 1217 transitions. [2022-03-20 12:06:10,572 INFO L78 Accepts]: Start accepts. Automaton has 993 states and 1217 transitions. Word has length 73 [2022-03-20 12:06:10,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 12:06:10,572 INFO L478 AbstractCegarLoop]: Abstraction has 993 states and 1217 transitions. [2022-03-20 12:06:10,572 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.9285714285714284) internal successors, (55), 6 states have internal predecessors, (55), 5 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2022-03-20 12:06:10,572 INFO L276 IsEmpty]: Start isEmpty. Operand 993 states and 1217 transitions. [2022-03-20 12:06:10,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-03-20 12:06:10,574 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 12:06:10,574 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 12:06:10,574 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2022-03-20 12:06:10,574 INFO L403 AbstractCegarLoop]: === Iteration 67 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 12:06:10,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 12:06:10,574 INFO L85 PathProgramCache]: Analyzing trace with hash -529895932, now seen corresponding path program 1 times [2022-03-20 12:06:10,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 12:06:10,575 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912932273] [2022-03-20 12:06:10,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 12:06:10,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 12:06:10,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:06:10,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 12:06:10,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:06:10,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 12:06:10,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:06:10,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 12:06:10,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:06:10,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-20 12:06:10,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:06:10,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-20 12:06:10,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:06:10,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-20 12:06:10,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:06:10,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-03-20 12:06:10,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:06:10,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-03-20 12:06:10,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:06:10,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-20 12:06:10,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:06:10,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 12:06:10,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 12:06:10,775 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912932273] [2022-03-20 12:06:10,775 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [912932273] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 12:06:10,776 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 12:06:10,776 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-03-20 12:06:10,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462826087] [2022-03-20 12:06:10,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 12:06:10,776 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-03-20 12:06:10,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 12:06:10,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-03-20 12:06:10,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2022-03-20 12:06:10,776 INFO L87 Difference]: Start difference. First operand 993 states and 1217 transitions. Second operand has 15 states, 15 states have (on average 3.6666666666666665) internal successors, (55), 5 states have internal predecessors, (55), 2 states have call successors, (11), 10 states have call predecessors, (11), 3 states have return successors, (9), 4 states have call predecessors, (9), 2 states have call successors, (9) [2022-03-20 12:06:11,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 12:06:11,635 INFO L93 Difference]: Finished difference Result 1022 states and 1245 transitions. [2022-03-20 12:06:11,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-20 12:06:11,635 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.6666666666666665) internal successors, (55), 5 states have internal predecessors, (55), 2 states have call successors, (11), 10 states have call predecessors, (11), 3 states have return successors, (9), 4 states have call predecessors, (9), 2 states have call successors, (9) Word has length 75 [2022-03-20 12:06:11,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 12:06:11,637 INFO L225 Difference]: With dead ends: 1022 [2022-03-20 12:06:11,637 INFO L226 Difference]: Without dead ends: 945 [2022-03-20 12:06:11,638 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2022-03-20 12:06:11,639 INFO L913 BasicCegarLoop]: 320 mSDtfsCounter, 352 mSDsluCounter, 741 mSDsCounter, 0 mSdLazyCounter, 1515 mSolverCounterSat, 129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 353 SdHoareTripleChecker+Valid, 1061 SdHoareTripleChecker+Invalid, 1644 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 1515 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-20 12:06:11,639 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [353 Valid, 1061 Invalid, 1644 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [129 Valid, 1515 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-20 12:06:11,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 945 states. [2022-03-20 12:06:11,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 945 to 945. [2022-03-20 12:06:11,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 945 states, 748 states have (on average 1.2459893048128343) internal successors, (932), 764 states have internal predecessors, (932), 97 states have call successors, (97), 76 states have call predecessors, (97), 99 states have return successors, (126), 109 states have call predecessors, (126), 92 states have call successors, (126) [2022-03-20 12:06:11,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 945 states to 945 states and 1155 transitions. [2022-03-20 12:06:11,717 INFO L78 Accepts]: Start accepts. Automaton has 945 states and 1155 transitions. Word has length 75 [2022-03-20 12:06:11,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 12:06:11,743 INFO L478 AbstractCegarLoop]: Abstraction has 945 states and 1155 transitions. [2022-03-20 12:06:11,743 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.6666666666666665) internal successors, (55), 5 states have internal predecessors, (55), 2 states have call successors, (11), 10 states have call predecessors, (11), 3 states have return successors, (9), 4 states have call predecessors, (9), 2 states have call successors, (9) [2022-03-20 12:06:11,743 INFO L276 IsEmpty]: Start isEmpty. Operand 945 states and 1155 transitions. [2022-03-20 12:06:11,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-03-20 12:06:11,745 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 12:06:11,745 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 12:06:11,745 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2022-03-20 12:06:11,745 INFO L403 AbstractCegarLoop]: === Iteration 68 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 12:06:11,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 12:06:11,745 INFO L85 PathProgramCache]: Analyzing trace with hash 1642144115, now seen corresponding path program 1 times [2022-03-20 12:06:11,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 12:06:11,745 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202325944] [2022-03-20 12:06:11,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 12:06:11,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 12:06:11,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:06:11,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 12:06:11,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:06:11,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 12:06:11,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:06:11,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 12:06:11,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:06:11,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-20 12:06:11,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:06:11,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-20 12:06:11,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:06:11,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-03-20 12:06:11,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:06:11,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-03-20 12:06:11,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:06:11,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 12:06:11,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 12:06:11,916 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202325944] [2022-03-20 12:06:11,917 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [202325944] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 12:06:11,917 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 12:06:11,917 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-20 12:06:11,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631331393] [2022-03-20 12:06:11,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 12:06:11,917 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-20 12:06:11,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 12:06:11,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-20 12:06:11,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2022-03-20 12:06:11,917 INFO L87 Difference]: Start difference. First operand 945 states and 1155 transitions. Second operand has 12 states, 12 states have (on average 4.75) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-03-20 12:06:12,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 12:06:12,837 INFO L93 Difference]: Finished difference Result 990 states and 1203 transitions. [2022-03-20 12:06:12,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-20 12:06:12,837 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.75) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 73 [2022-03-20 12:06:12,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 12:06:12,839 INFO L225 Difference]: With dead ends: 990 [2022-03-20 12:06:12,839 INFO L226 Difference]: Without dead ends: 929 [2022-03-20 12:06:12,840 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2022-03-20 12:06:12,840 INFO L913 BasicCegarLoop]: 304 mSDtfsCounter, 166 mSDsluCounter, 672 mSDsCounter, 0 mSdLazyCounter, 1216 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 976 SdHoareTripleChecker+Invalid, 1275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 1216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-20 12:06:12,840 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [168 Valid, 976 Invalid, 1275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 1216 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-20 12:06:12,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 929 states. [2022-03-20 12:06:12,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 929 to 929. [2022-03-20 12:06:12,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 929 states, 734 states have (on average 1.2452316076294279) internal successors, (914), 750 states have internal predecessors, (914), 95 states have call successors, (95), 76 states have call predecessors, (95), 99 states have return successors, (122), 107 states have call predecessors, (122), 90 states have call successors, (122) [2022-03-20 12:06:12,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 929 states to 929 states and 1131 transitions. [2022-03-20 12:06:12,916 INFO L78 Accepts]: Start accepts. Automaton has 929 states and 1131 transitions. Word has length 73 [2022-03-20 12:06:12,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 12:06:12,916 INFO L478 AbstractCegarLoop]: Abstraction has 929 states and 1131 transitions. [2022-03-20 12:06:12,916 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.75) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-03-20 12:06:12,916 INFO L276 IsEmpty]: Start isEmpty. Operand 929 states and 1131 transitions. [2022-03-20 12:06:12,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-03-20 12:06:12,919 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 12:06:12,919 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 12:06:12,919 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2022-03-20 12:06:12,919 INFO L403 AbstractCegarLoop]: === Iteration 69 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 12:06:12,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 12:06:12,919 INFO L85 PathProgramCache]: Analyzing trace with hash 780600349, now seen corresponding path program 1 times [2022-03-20 12:06:12,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 12:06:12,920 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892174093] [2022-03-20 12:06:12,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 12:06:12,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 12:06:12,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:06:12,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 12:06:12,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:06:13,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 12:06:13,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:06:13,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 12:06:13,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:06:13,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-03-20 12:06:13,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:06:13,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 12:06:13,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:06:13,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-20 12:06:13,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:06:13,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-20 12:06:13,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:06:13,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 12:06:13,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:06:13,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-03-20 12:06:13,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:06:13,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 12:06:13,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 12:06:13,176 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892174093] [2022-03-20 12:06:13,176 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1892174093] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 12:06:13,176 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 12:06:13,176 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-03-20 12:06:13,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334883764] [2022-03-20 12:06:13,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 12:06:13,176 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-03-20 12:06:13,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 12:06:13,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-03-20 12:06:13,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2022-03-20 12:06:13,177 INFO L87 Difference]: Start difference. First operand 929 states and 1131 transitions. Second operand has 13 states, 13 states have (on average 4.230769230769231) internal successors, (55), 5 states have internal predecessors, (55), 2 states have call successors, (13), 9 states have call predecessors, (13), 3 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2022-03-20 12:06:14,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 12:06:14,030 INFO L93 Difference]: Finished difference Result 1093 states and 1333 transitions. [2022-03-20 12:06:14,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-20 12:06:14,030 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.230769230769231) internal successors, (55), 5 states have internal predecessors, (55), 2 states have call successors, (13), 9 states have call predecessors, (13), 3 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) Word has length 77 [2022-03-20 12:06:14,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 12:06:14,032 INFO L225 Difference]: With dead ends: 1093 [2022-03-20 12:06:14,032 INFO L226 Difference]: Without dead ends: 915 [2022-03-20 12:06:14,033 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2022-03-20 12:06:14,033 INFO L913 BasicCegarLoop]: 296 mSDtfsCounter, 345 mSDsluCounter, 871 mSDsCounter, 0 mSdLazyCounter, 1168 mSolverCounterSat, 122 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 347 SdHoareTripleChecker+Valid, 1167 SdHoareTripleChecker+Invalid, 1290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 122 IncrementalHoareTripleChecker+Valid, 1168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-20 12:06:14,033 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [347 Valid, 1167 Invalid, 1290 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [122 Valid, 1168 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-20 12:06:14,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 915 states. [2022-03-20 12:06:14,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 915 to 915. [2022-03-20 12:06:14,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 915 states, 720 states have (on average 1.238888888888889) internal successors, (892), 736 states have internal predecessors, (892), 95 states have call successors, (95), 76 states have call predecessors, (95), 99 states have return successors, (122), 107 states have call predecessors, (122), 90 states have call successors, (122) [2022-03-20 12:06:14,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 915 states to 915 states and 1109 transitions. [2022-03-20 12:06:14,124 INFO L78 Accepts]: Start accepts. Automaton has 915 states and 1109 transitions. Word has length 77 [2022-03-20 12:06:14,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 12:06:14,124 INFO L478 AbstractCegarLoop]: Abstraction has 915 states and 1109 transitions. [2022-03-20 12:06:14,124 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.230769230769231) internal successors, (55), 5 states have internal predecessors, (55), 2 states have call successors, (13), 9 states have call predecessors, (13), 3 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2022-03-20 12:06:14,124 INFO L276 IsEmpty]: Start isEmpty. Operand 915 states and 1109 transitions. [2022-03-20 12:06:14,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-03-20 12:06:14,125 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 12:06:14,125 INFO L499 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 12:06:14,125 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2022-03-20 12:06:14,125 INFO L403 AbstractCegarLoop]: === Iteration 70 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 12:06:14,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 12:06:14,126 INFO L85 PathProgramCache]: Analyzing trace with hash 1219602648, now seen corresponding path program 1 times [2022-03-20 12:06:14,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 12:06:14,126 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461923468] [2022-03-20 12:06:14,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 12:06:14,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 12:06:14,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:06:14,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 12:06:14,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:06:14,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 12:06:14,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:06:14,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 12:06:14,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:06:14,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-20 12:06:14,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:06:14,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-20 12:06:14,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:06:14,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-20 12:06:14,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:06:14,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-20 12:06:14,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:06:14,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-03-20 12:06:14,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:06:14,270 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-20 12:06:14,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 12:06:14,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461923468] [2022-03-20 12:06:14,270 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1461923468] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 12:06:14,270 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 12:06:14,270 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-20 12:06:14,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693399716] [2022-03-20 12:06:14,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 12:06:14,271 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-20 12:06:14,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 12:06:14,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-20 12:06:14,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2022-03-20 12:06:14,271 INFO L87 Difference]: Start difference. First operand 915 states and 1109 transitions. Second operand has 12 states, 12 states have (on average 4.583333333333333) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (10), 9 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-03-20 12:06:14,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 12:06:14,994 INFO L93 Difference]: Finished difference Result 960 states and 1157 transitions. [2022-03-20 12:06:14,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-20 12:06:14,995 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.583333333333333) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (10), 9 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 75 [2022-03-20 12:06:14,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 12:06:14,996 INFO L225 Difference]: With dead ends: 960 [2022-03-20 12:06:14,997 INFO L226 Difference]: Without dead ends: 895 [2022-03-20 12:06:14,997 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2022-03-20 12:06:14,997 INFO L913 BasicCegarLoop]: 288 mSDtfsCounter, 547 mSDsluCounter, 622 mSDsCounter, 0 mSdLazyCounter, 1038 mSolverCounterSat, 204 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 549 SdHoareTripleChecker+Valid, 910 SdHoareTripleChecker+Invalid, 1242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 204 IncrementalHoareTripleChecker+Valid, 1038 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-20 12:06:14,997 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [549 Valid, 910 Invalid, 1242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [204 Valid, 1038 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-20 12:06:14,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 895 states. [2022-03-20 12:06:15,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 895 to 895. [2022-03-20 12:06:15,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 895 states, 704 states have (on average 1.2386363636363635) internal successors, (872), 720 states have internal predecessors, (872), 91 states have call successors, (91), 76 states have call predecessors, (91), 99 states have return successors, (118), 103 states have call predecessors, (118), 86 states have call successors, (118) [2022-03-20 12:06:15,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 895 states to 895 states and 1081 transitions. [2022-03-20 12:06:15,069 INFO L78 Accepts]: Start accepts. Automaton has 895 states and 1081 transitions. Word has length 75 [2022-03-20 12:06:15,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 12:06:15,069 INFO L478 AbstractCegarLoop]: Abstraction has 895 states and 1081 transitions. [2022-03-20 12:06:15,069 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.583333333333333) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (10), 9 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-03-20 12:06:15,069 INFO L276 IsEmpty]: Start isEmpty. Operand 895 states and 1081 transitions. [2022-03-20 12:06:15,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-03-20 12:06:15,071 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 12:06:15,071 INFO L499 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 12:06:15,071 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2022-03-20 12:06:15,071 INFO L403 AbstractCegarLoop]: === Iteration 71 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 12:06:15,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 12:06:15,071 INFO L85 PathProgramCache]: Analyzing trace with hash 461830745, now seen corresponding path program 1 times [2022-03-20 12:06:15,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 12:06:15,071 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662544276] [2022-03-20 12:06:15,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 12:06:15,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 12:06:15,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:06:15,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 12:06:15,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:06:15,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 12:06:15,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:06:15,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 12:06:15,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:06:15,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-20 12:06:15,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:06:15,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-20 12:06:15,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:06:15,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-03-20 12:06:15,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:06:15,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-03-20 12:06:15,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:06:15,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-03-20 12:06:15,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:06:15,243 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-20 12:06:15,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 12:06:15,243 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662544276] [2022-03-20 12:06:15,243 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [662544276] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 12:06:15,243 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1429645208] [2022-03-20 12:06:15,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 12:06:15,243 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 12:06:15,243 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 12:06:15,260 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-20 12:06:15,284 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-03-20 12:06:15,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:06:15,439 INFO L263 TraceCheckSpWp]: Trace formula consists of 908 conjuncts, 4 conjunts are in the unsatisfiable core [2022-03-20 12:06:15,441 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 12:06:15,552 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 12:06:15,552 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-20 12:06:15,552 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1429645208] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 12:06:15,552 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-20 12:06:15,552 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 12 [2022-03-20 12:06:15,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146762438] [2022-03-20 12:06:15,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 12:06:15,552 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-20 12:06:15,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 12:06:15,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-20 12:06:15,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2022-03-20 12:06:15,553 INFO L87 Difference]: Start difference. First operand 895 states and 1081 transitions. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-03-20 12:06:15,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 12:06:15,634 INFO L93 Difference]: Finished difference Result 929 states and 1113 transitions. [2022-03-20 12:06:15,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-20 12:06:15,635 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 77 [2022-03-20 12:06:15,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 12:06:15,636 INFO L225 Difference]: With dead ends: 929 [2022-03-20 12:06:15,636 INFO L226 Difference]: Without dead ends: 834 [2022-03-20 12:06:15,637 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2022-03-20 12:06:15,637 INFO L913 BasicCegarLoop]: 295 mSDtfsCounter, 0 mSDsluCounter, 881 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1176 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-20 12:06:15,637 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 1176 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-20 12:06:15,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 834 states. [2022-03-20 12:06:15,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 834 to 834. [2022-03-20 12:06:15,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 834 states, 658 states have (on average 1.2462006079027355) internal successors, (820), 671 states have internal predecessors, (820), 85 states have call successors, (85), 73 states have call predecessors, (85), 90 states have return successors, (106), 94 states have call predecessors, (106), 80 states have call successors, (106) [2022-03-20 12:06:15,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 834 states to 834 states and 1011 transitions. [2022-03-20 12:06:15,700 INFO L78 Accepts]: Start accepts. Automaton has 834 states and 1011 transitions. Word has length 77 [2022-03-20 12:06:15,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 12:06:15,700 INFO L478 AbstractCegarLoop]: Abstraction has 834 states and 1011 transitions. [2022-03-20 12:06:15,700 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-03-20 12:06:15,700 INFO L276 IsEmpty]: Start isEmpty. Operand 834 states and 1011 transitions. [2022-03-20 12:06:15,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-03-20 12:06:15,701 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 12:06:15,701 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 12:06:15,720 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-03-20 12:06:15,920 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 12:06:15,920 INFO L403 AbstractCegarLoop]: === Iteration 72 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 12:06:15,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 12:06:15,920 INFO L85 PathProgramCache]: Analyzing trace with hash 1363389701, now seen corresponding path program 1 times [2022-03-20 12:06:15,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 12:06:15,920 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300923880] [2022-03-20 12:06:15,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 12:06:15,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 12:06:15,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:06:15,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 12:06:15,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:06:15,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 12:06:15,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:06:16,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 12:06:16,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:06:16,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-03-20 12:06:16,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:06:16,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 12:06:16,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:06:16,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-20 12:06:16,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:06:16,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-20 12:06:16,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:06:16,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 12:06:16,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:06:16,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-20 12:06:16,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:06:16,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-03-20 12:06:16,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:06:16,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 12:06:16,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 12:06:16,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300923880] [2022-03-20 12:06:16,109 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1300923880] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 12:06:16,109 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 12:06:16,109 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-03-20 12:06:16,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542120395] [2022-03-20 12:06:16,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 12:06:16,110 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-03-20 12:06:16,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 12:06:16,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-03-20 12:06:16,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2022-03-20 12:06:16,110 INFO L87 Difference]: Start difference. First operand 834 states and 1011 transitions. Second operand has 14 states, 14 states have (on average 4.071428571428571) internal successors, (57), 6 states have internal predecessors, (57), 4 states have call successors, (14), 11 states have call predecessors, (14), 5 states have return successors, (10), 6 states have call predecessors, (10), 3 states have call successors, (10) [2022-03-20 12:06:16,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 12:06:16,732 INFO L93 Difference]: Finished difference Result 966 states and 1179 transitions. [2022-03-20 12:06:16,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-20 12:06:16,732 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.071428571428571) internal successors, (57), 6 states have internal predecessors, (57), 4 states have call successors, (14), 11 states have call predecessors, (14), 5 states have return successors, (10), 6 states have call predecessors, (10), 3 states have call successors, (10) Word has length 81 [2022-03-20 12:06:16,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 12:06:16,734 INFO L225 Difference]: With dead ends: 966 [2022-03-20 12:06:16,734 INFO L226 Difference]: Without dead ends: 802 [2022-03-20 12:06:16,734 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=121, Invalid=385, Unknown=0, NotChecked=0, Total=506 [2022-03-20 12:06:16,734 INFO L913 BasicCegarLoop]: 260 mSDtfsCounter, 649 mSDsluCounter, 495 mSDsCounter, 0 mSdLazyCounter, 633 mSolverCounterSat, 209 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 656 SdHoareTripleChecker+Valid, 755 SdHoareTripleChecker+Invalid, 842 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 209 IncrementalHoareTripleChecker+Valid, 633 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-20 12:06:16,735 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [656 Valid, 755 Invalid, 842 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [209 Valid, 633 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-20 12:06:16,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 802 states. [2022-03-20 12:06:16,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 802 to 802. [2022-03-20 12:06:16,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 802 states, 632 states have (on average 1.25) internal successors, (790), 643 states have internal predecessors, (790), 83 states have call successors, (83), 71 states have call predecessors, (83), 86 states have return successors, (102), 92 states have call predecessors, (102), 78 states have call successors, (102) [2022-03-20 12:06:16,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 802 states to 802 states and 975 transitions. [2022-03-20 12:06:16,797 INFO L78 Accepts]: Start accepts. Automaton has 802 states and 975 transitions. Word has length 81 [2022-03-20 12:06:16,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 12:06:16,797 INFO L478 AbstractCegarLoop]: Abstraction has 802 states and 975 transitions. [2022-03-20 12:06:16,798 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.071428571428571) internal successors, (57), 6 states have internal predecessors, (57), 4 states have call successors, (14), 11 states have call predecessors, (14), 5 states have return successors, (10), 6 states have call predecessors, (10), 3 states have call successors, (10) [2022-03-20 12:06:16,798 INFO L276 IsEmpty]: Start isEmpty. Operand 802 states and 975 transitions. [2022-03-20 12:06:16,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-03-20 12:06:16,799 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 12:06:16,799 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 12:06:16,799 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2022-03-20 12:06:16,799 INFO L403 AbstractCegarLoop]: === Iteration 73 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 12:06:16,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 12:06:16,799 INFO L85 PathProgramCache]: Analyzing trace with hash -1220432173, now seen corresponding path program 1 times [2022-03-20 12:06:16,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 12:06:16,799 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954262782] [2022-03-20 12:06:16,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 12:06:16,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 12:06:16,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:06:16,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 12:06:16,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:06:16,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 12:06:16,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:06:16,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 12:06:16,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:06:16,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-20 12:06:16,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:06:16,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-03-20 12:06:16,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:06:16,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-03-20 12:06:16,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:06:16,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-20 12:06:16,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:06:17,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-20 12:06:17,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:06:17,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-20 12:06:17,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:06:17,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 12:06:17,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 12:06:17,016 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954262782] [2022-03-20 12:06:17,016 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1954262782] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 12:06:17,016 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 12:06:17,016 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-03-20 12:06:17,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50745695] [2022-03-20 12:06:17,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 12:06:17,016 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-03-20 12:06:17,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 12:06:17,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-03-20 12:06:17,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=246, Unknown=0, NotChecked=0, Total=306 [2022-03-20 12:06:17,017 INFO L87 Difference]: Start difference. First operand 802 states and 975 transitions. Second operand has 18 states, 18 states have (on average 3.2222222222222223) internal successors, (58), 9 states have internal predecessors, (58), 5 states have call successors, (11), 10 states have call predecessors, (11), 4 states have return successors, (9), 6 states have call predecessors, (9), 5 states have call successors, (9) [2022-03-20 12:06:18,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 12:06:18,062 INFO L93 Difference]: Finished difference Result 847 states and 1020 transitions. [2022-03-20 12:06:18,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-03-20 12:06:18,062 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.2222222222222223) internal successors, (58), 9 states have internal predecessors, (58), 5 states have call successors, (11), 10 states have call predecessors, (11), 4 states have return successors, (9), 6 states have call predecessors, (9), 5 states have call successors, (9) Word has length 78 [2022-03-20 12:06:18,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 12:06:18,063 INFO L225 Difference]: With dead ends: 847 [2022-03-20 12:06:18,063 INFO L226 Difference]: Without dead ends: 714 [2022-03-20 12:06:18,064 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=271, Invalid=851, Unknown=0, NotChecked=0, Total=1122 [2022-03-20 12:06:18,064 INFO L913 BasicCegarLoop]: 425 mSDtfsCounter, 1101 mSDsluCounter, 1008 mSDsCounter, 0 mSdLazyCounter, 2361 mSolverCounterSat, 405 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1103 SdHoareTripleChecker+Valid, 1433 SdHoareTripleChecker+Invalid, 2766 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 405 IncrementalHoareTripleChecker+Valid, 2361 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-20 12:06:18,064 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1103 Valid, 1433 Invalid, 2766 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [405 Valid, 2361 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-20 12:06:18,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 714 states. [2022-03-20 12:06:18,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 714 to 366. [2022-03-20 12:06:18,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 366 states, 288 states have (on average 1.25) internal successors, (360), 292 states have internal predecessors, (360), 40 states have call successors, (40), 35 states have call predecessors, (40), 37 states have return successors, (44), 40 states have call predecessors, (44), 36 states have call successors, (44) [2022-03-20 12:06:18,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 366 states to 366 states and 444 transitions. [2022-03-20 12:06:18,101 INFO L78 Accepts]: Start accepts. Automaton has 366 states and 444 transitions. Word has length 78 [2022-03-20 12:06:18,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 12:06:18,101 INFO L478 AbstractCegarLoop]: Abstraction has 366 states and 444 transitions. [2022-03-20 12:06:18,102 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.2222222222222223) internal successors, (58), 9 states have internal predecessors, (58), 5 states have call successors, (11), 10 states have call predecessors, (11), 4 states have return successors, (9), 6 states have call predecessors, (9), 5 states have call successors, (9) [2022-03-20 12:06:18,102 INFO L276 IsEmpty]: Start isEmpty. Operand 366 states and 444 transitions. [2022-03-20 12:06:18,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-20 12:06:18,102 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 12:06:18,102 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 12:06:18,102 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2022-03-20 12:06:18,102 INFO L403 AbstractCegarLoop]: === Iteration 74 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 12:06:18,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 12:06:18,103 INFO L85 PathProgramCache]: Analyzing trace with hash -1514865381, now seen corresponding path program 1 times [2022-03-20 12:06:18,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 12:06:18,103 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389826193] [2022-03-20 12:06:18,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 12:06:18,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 12:06:18,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:06:18,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 12:06:18,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:06:18,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 12:06:18,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:06:18,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 12:06:18,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:06:18,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-20 12:06:18,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:06:18,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-20 12:06:18,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:06:18,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-20 12:06:18,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:06:18,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-03-20 12:06:18,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:06:18,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-20 12:06:18,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:06:18,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 12:06:18,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 12:06:18,333 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389826193] [2022-03-20 12:06:18,333 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [389826193] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 12:06:18,333 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 12:06:18,333 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-20 12:06:18,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544264264] [2022-03-20 12:06:18,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 12:06:18,334 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-20 12:06:18,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 12:06:18,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-20 12:06:18,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=327, Unknown=0, NotChecked=0, Total=380 [2022-03-20 12:06:18,334 INFO L87 Difference]: Start difference. First operand 366 states and 444 transitions. Second operand has 20 states, 20 states have (on average 3.05) internal successors, (61), 9 states have internal predecessors, (61), 2 states have call successors, (10), 9 states have call predecessors, (10), 5 states have return successors, (8), 5 states have call predecessors, (8), 1 states have call successors, (8) [2022-03-20 12:06:19,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 12:06:19,020 INFO L93 Difference]: Finished difference Result 368 states and 445 transitions. [2022-03-20 12:06:19,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-03-20 12:06:19,020 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 [2022-03-20 12:06:19,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 12:06:19,021 INFO L225 Difference]: With dead ends: 368 [2022-03-20 12:06:19,021 INFO L226 Difference]: Without dead ends: 289 [2022-03-20 12:06:19,021 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=401, Unknown=0, NotChecked=0, Total=462 [2022-03-20 12:06:19,021 INFO L913 BasicCegarLoop]: 219 mSDtfsCounter, 192 mSDsluCounter, 1375 mSDsCounter, 0 mSdLazyCounter, 2086 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 193 SdHoareTripleChecker+Valid, 1594 SdHoareTripleChecker+Invalid, 2153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 2086 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-20 12:06:19,021 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [193 Valid, 1594 Invalid, 2153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 2086 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-20 12:06:19,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2022-03-20 12:06:19,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 289. [2022-03-20 12:06:19,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 289 states, 225 states have (on average 1.271111111111111) internal successors, (286), 227 states have internal predecessors, (286), 32 states have call successors, (32), 29 states have call predecessors, (32), 31 states have return successors, (37), 33 states have call predecessors, (37), 29 states have call successors, (37) [2022-03-20 12:06:19,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 355 transitions. [2022-03-20 12:06:19,050 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 355 transitions. Word has length 79 [2022-03-20 12:06:19,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 12:06:19,050 INFO L478 AbstractCegarLoop]: Abstraction has 289 states and 355 transitions. [2022-03-20 12:06:19,050 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) [2022-03-20 12:06:19,051 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 355 transitions. [2022-03-20 12:06:19,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-03-20 12:06:19,051 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 12:06:19,051 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 12:06:19,051 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2022-03-20 12:06:19,051 INFO L403 AbstractCegarLoop]: === Iteration 75 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 12:06:19,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 12:06:19,052 INFO L85 PathProgramCache]: Analyzing trace with hash -1000162365, now seen corresponding path program 1 times [2022-03-20 12:06:19,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 12:06:19,052 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021915034] [2022-03-20 12:06:19,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 12:06:19,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 12:06:19,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:06:19,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 12:06:19,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:06:19,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 12:06:19,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:06:19,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 12:06:19,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:06:19,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-03-20 12:06:19,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:06:19,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 12:06:19,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:06:19,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-20 12:06:19,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:06:19,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-20 12:06:19,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:06:19,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 12:06:19,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:06:19,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-20 12:06:19,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:06:19,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-03-20 12:06:19,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:06:19,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 12:06:19,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 12:06:19,202 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021915034] [2022-03-20 12:06:19,202 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1021915034] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 12:06:19,202 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 12:06:19,202 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-20 12:06:19,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324524518] [2022-03-20 12:06:19,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 12:06:19,202 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-20 12:06:19,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 12:06:19,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-20 12:06:19,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2022-03-20 12:06:19,203 INFO L87 Difference]: Start difference. First operand 289 states and 355 transitions. Second operand has 12 states, 12 states have (on average 4.916666666666667) internal successors, (59), 5 states have internal predecessors, (59), 3 states have call successors, (14), 10 states have call predecessors, (14), 4 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) [2022-03-20 12:06:19,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 12:06:19,570 INFO L93 Difference]: Finished difference Result 372 states and 441 transitions. [2022-03-20 12:06:19,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-03-20 12:06:19,570 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.916666666666667) internal successors, (59), 5 states have internal predecessors, (59), 3 states have call successors, (14), 10 states have call predecessors, (14), 4 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) Word has length 83 [2022-03-20 12:06:19,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 12:06:19,571 INFO L225 Difference]: With dead ends: 372 [2022-03-20 12:06:19,571 INFO L226 Difference]: Without dead ends: 286 [2022-03-20 12:06:19,571 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=104, Invalid=238, Unknown=0, NotChecked=0, Total=342 [2022-03-20 12:06:19,572 INFO L913 BasicCegarLoop]: 205 mSDtfsCounter, 171 mSDsluCounter, 475 mSDsCounter, 0 mSdLazyCounter, 436 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 680 SdHoareTripleChecker+Invalid, 512 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 436 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-20 12:06:19,572 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [174 Valid, 680 Invalid, 512 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 436 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-20 12:06:19,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2022-03-20 12:06:19,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 246. [2022-03-20 12:06:19,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 189 states have (on average 1.1904761904761905) internal successors, (225), 192 states have internal predecessors, (225), 29 states have call successors, (29), 26 states have call predecessors, (29), 27 states have return successors, (30), 28 states have call predecessors, (30), 27 states have call successors, (30) [2022-03-20 12:06:19,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 284 transitions. [2022-03-20 12:06:19,596 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 284 transitions. Word has length 83 [2022-03-20 12:06:19,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 12:06:19,596 INFO L478 AbstractCegarLoop]: Abstraction has 246 states and 284 transitions. [2022-03-20 12:06:19,597 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.916666666666667) internal successors, (59), 5 states have internal predecessors, (59), 3 states have call successors, (14), 10 states have call predecessors, (14), 4 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) [2022-03-20 12:06:19,597 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 284 transitions. [2022-03-20 12:06:19,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-20 12:06:19,597 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 12:06:19,597 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 12:06:19,597 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2022-03-20 12:06:19,597 INFO L403 AbstractCegarLoop]: === Iteration 76 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 12:06:19,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 12:06:19,598 INFO L85 PathProgramCache]: Analyzing trace with hash -2124626258, now seen corresponding path program 1 times [2022-03-20 12:06:19,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 12:06:19,598 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294963619] [2022-03-20 12:06:19,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 12:06:19,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 12:06:19,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:06:19,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 12:06:19,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:06:19,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 12:06:19,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:06:19,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 12:06:19,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:06:19,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-03-20 12:06:19,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:06:19,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-20 12:06:19,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:06:19,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 12:06:19,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:06:19,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-20 12:06:19,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:06:19,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-20 12:06:19,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:06:19,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 12:06:19,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:06:19,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-20 12:06:19,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:06:19,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-03-20 12:06:19,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:06:19,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-03-20 12:06:19,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:06:19,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 12:06:19,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 12:06:19,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294963619] [2022-03-20 12:06:19,855 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [294963619] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 12:06:19,855 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 12:06:19,855 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-03-20 12:06:19,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798079361] [2022-03-20 12:06:19,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 12:06:19,855 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-03-20 12:06:19,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 12:06:19,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-03-20 12:06:19,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2022-03-20 12:06:19,856 INFO L87 Difference]: Start difference. First operand 246 states and 284 transitions. Second operand has 18 states, 18 states have (on average 4.055555555555555) internal successors, (73), 7 states have internal predecessors, (73), 4 states have call successors, (14), 11 states have call predecessors, (14), 3 states have return successors, (12), 5 states have call predecessors, (12), 3 states have call successors, (12) [2022-03-20 12:06:20,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 12:06:20,450 INFO L93 Difference]: Finished difference Result 299 states and 341 transitions. [2022-03-20 12:06:20,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-03-20 12:06:20,450 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.055555555555555) internal successors, (73), 7 states have internal predecessors, (73), 4 states have call successors, (14), 11 states have call predecessors, (14), 3 states have return successors, (12), 5 states have call predecessors, (12), 3 states have call successors, (12) Word has length 99 [2022-03-20 12:06:20,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 12:06:20,451 INFO L225 Difference]: With dead ends: 299 [2022-03-20 12:06:20,451 INFO L226 Difference]: Without dead ends: 265 [2022-03-20 12:06:20,452 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=141, Invalid=671, Unknown=0, NotChecked=0, Total=812 [2022-03-20 12:06:20,452 INFO L913 BasicCegarLoop]: 156 mSDtfsCounter, 289 mSDsluCounter, 925 mSDsCounter, 0 mSdLazyCounter, 793 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 294 SdHoareTripleChecker+Valid, 1081 SdHoareTripleChecker+Invalid, 895 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 793 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-20 12:06:20,452 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [294 Valid, 1081 Invalid, 895 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 793 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-20 12:06:20,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2022-03-20 12:06:20,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 244. [2022-03-20 12:06:20,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244 states, 187 states have (on average 1.1657754010695187) internal successors, (218), 190 states have internal predecessors, (218), 29 states have call successors, (29), 26 states have call predecessors, (29), 27 states have return successors, (30), 28 states have call predecessors, (30), 27 states have call successors, (30) [2022-03-20 12:06:20,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 277 transitions. [2022-03-20 12:06:20,480 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 277 transitions. Word has length 99 [2022-03-20 12:06:20,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 12:06:20,480 INFO L478 AbstractCegarLoop]: Abstraction has 244 states and 277 transitions. [2022-03-20 12:06:20,480 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.055555555555555) internal successors, (73), 7 states have internal predecessors, (73), 4 states have call successors, (14), 11 states have call predecessors, (14), 3 states have return successors, (12), 5 states have call predecessors, (12), 3 states have call successors, (12) [2022-03-20 12:06:20,480 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 277 transitions. [2022-03-20 12:06:20,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-03-20 12:06:20,481 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 12:06:20,481 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 12:06:20,481 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2022-03-20 12:06:20,481 INFO L403 AbstractCegarLoop]: === Iteration 77 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 12:06:20,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 12:06:20,481 INFO L85 PathProgramCache]: Analyzing trace with hash 515298531, now seen corresponding path program 1 times [2022-03-20 12:06:20,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 12:06:20,481 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718630295] [2022-03-20 12:06:20,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 12:06:20,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 12:06:20,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:06:20,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 12:06:20,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:06:20,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 12:06:20,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:06:20,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 12:06:20,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:06:20,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-03-20 12:06:20,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:06:20,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-20 12:06:20,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:06:20,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 12:06:20,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:06:20,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-20 12:06:20,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:06:20,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-20 12:06:20,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:06:20,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 12:06:20,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:06:20,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-20 12:06:20,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:06:20,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-03-20 12:06:20,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:06:20,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-03-20 12:06:20,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:06:20,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 12:06:20,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 12:06:20,744 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718630295] [2022-03-20 12:06:20,744 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [718630295] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 12:06:20,744 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 12:06:20,745 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-20 12:06:20,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130292114] [2022-03-20 12:06:20,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 12:06:20,745 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-20 12:06:20,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 12:06:20,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-20 12:06:20,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=275, Unknown=0, NotChecked=0, Total=342 [2022-03-20 12:06:20,745 INFO L87 Difference]: Start difference. First operand 244 states and 277 transitions. Second operand has 19 states, 19 states have (on average 3.9473684210526314) internal successors, (75), 9 states have internal predecessors, (75), 5 states have call successors, (14), 11 states have call predecessors, (14), 4 states have return successors, (12), 5 states have call predecessors, (12), 4 states have call successors, (12) [2022-03-20 12:06:22,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 12:06:22,020 INFO L93 Difference]: Finished difference Result 528 states and 598 transitions. [2022-03-20 12:06:22,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-03-20 12:06:22,020 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.9473684210526314) internal successors, (75), 9 states have internal predecessors, (75), 5 states have call successors, (14), 11 states have call predecessors, (14), 4 states have return successors, (12), 5 states have call predecessors, (12), 4 states have call successors, (12) Word has length 101 [2022-03-20 12:06:22,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 12:06:22,022 INFO L225 Difference]: With dead ends: 528 [2022-03-20 12:06:22,022 INFO L226 Difference]: Without dead ends: 422 [2022-03-20 12:06:22,022 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 239 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=245, Invalid=1315, Unknown=0, NotChecked=0, Total=1560 [2022-03-20 12:06:22,022 INFO L913 BasicCegarLoop]: 252 mSDtfsCounter, 1004 mSDsluCounter, 699 mSDsCounter, 0 mSdLazyCounter, 2081 mSolverCounterSat, 393 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1005 SdHoareTripleChecker+Valid, 951 SdHoareTripleChecker+Invalid, 2474 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 393 IncrementalHoareTripleChecker+Valid, 2081 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-03-20 12:06:22,023 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1005 Valid, 951 Invalid, 2474 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [393 Valid, 2081 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-03-20 12:06:22,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 422 states. [2022-03-20 12:06:22,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 422 to 359. [2022-03-20 12:06:22,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 359 states, 277 states have (on average 1.1552346570397112) internal successors, (320), 282 states have internal predecessors, (320), 41 states have call successors, (41), 38 states have call predecessors, (41), 40 states have return successors, (43), 39 states have call predecessors, (43), 39 states have call successors, (43) [2022-03-20 12:06:22,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 404 transitions. [2022-03-20 12:06:22,061 INFO L78 Accepts]: Start accepts. Automaton has 359 states and 404 transitions. Word has length 101 [2022-03-20 12:06:22,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 12:06:22,061 INFO L478 AbstractCegarLoop]: Abstraction has 359 states and 404 transitions. [2022-03-20 12:06:22,061 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.9473684210526314) internal successors, (75), 9 states have internal predecessors, (75), 5 states have call successors, (14), 11 states have call predecessors, (14), 4 states have return successors, (12), 5 states have call predecessors, (12), 4 states have call successors, (12) [2022-03-20 12:06:22,061 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states and 404 transitions. [2022-03-20 12:06:22,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-03-20 12:06:22,065 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 12:06:22,065 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 12:06:22,065 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2022-03-20 12:06:22,065 INFO L403 AbstractCegarLoop]: === Iteration 78 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 12:06:22,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 12:06:22,065 INFO L85 PathProgramCache]: Analyzing trace with hash 1453830146, now seen corresponding path program 1 times [2022-03-20 12:06:22,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 12:06:22,066 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918616566] [2022-03-20 12:06:22,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 12:06:22,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 12:06:22,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:06:22,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 12:06:22,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:06:22,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 12:06:22,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:06:22,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 12:06:22,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:06:22,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-03-20 12:06:22,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:06:22,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-20 12:06:22,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:06:22,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 12:06:22,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:06:22,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-20 12:06:22,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:06:22,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-20 12:06:22,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:06:22,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 12:06:22,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:06:22,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-20 12:06:22,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:06:22,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-03-20 12:06:22,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:06:22,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-03-20 12:06:22,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:06:22,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 12:06:22,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 12:06:22,334 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918616566] [2022-03-20 12:06:22,334 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [918616566] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 12:06:22,334 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 12:06:22,334 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-03-20 12:06:22,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575828573] [2022-03-20 12:06:22,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 12:06:22,334 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-03-20 12:06:22,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 12:06:22,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-03-20 12:06:22,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2022-03-20 12:06:22,335 INFO L87 Difference]: Start difference. First operand 359 states and 404 transitions. Second operand has 17 states, 17 states have (on average 4.411764705882353) internal successors, (75), 6 states have internal predecessors, (75), 3 states have call successors, (14), 11 states have call predecessors, (14), 3 states have return successors, (12), 4 states have call predecessors, (12), 2 states have call successors, (12) [2022-03-20 12:06:22,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 12:06:22,954 INFO L93 Difference]: Finished difference Result 377 states and 423 transitions. [2022-03-20 12:06:22,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-20 12:06:22,954 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 4.411764705882353) internal successors, (75), 6 states have internal predecessors, (75), 3 states have call successors, (14), 11 states have call predecessors, (14), 3 states have return successors, (12), 4 states have call predecessors, (12), 2 states have call successors, (12) Word has length 101 [2022-03-20 12:06:22,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 12:06:22,955 INFO L225 Difference]: With dead ends: 377 [2022-03-20 12:06:22,955 INFO L226 Difference]: Without dead ends: 274 [2022-03-20 12:06:22,956 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=76, Invalid=266, Unknown=0, NotChecked=0, Total=342 [2022-03-20 12:06:22,956 INFO L913 BasicCegarLoop]: 160 mSDtfsCounter, 59 mSDsluCounter, 931 mSDsCounter, 0 mSdLazyCounter, 986 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 1091 SdHoareTripleChecker+Invalid, 1020 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 986 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-20 12:06:22,956 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [60 Valid, 1091 Invalid, 1020 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 986 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-20 12:06:22,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2022-03-20 12:06:23,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 146. [2022-03-20 12:06:23,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 112 states have (on average 1.125) internal successors, (126), 114 states have internal predecessors, (126), 17 states have call successors, (17), 17 states have call predecessors, (17), 16 states have return successors, (16), 15 states have call predecessors, (16), 15 states have call successors, (16) [2022-03-20 12:06:23,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 159 transitions. [2022-03-20 12:06:23,004 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 159 transitions. Word has length 101 [2022-03-20 12:06:23,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 12:06:23,005 INFO L478 AbstractCegarLoop]: Abstraction has 146 states and 159 transitions. [2022-03-20 12:06:23,005 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 4.411764705882353) internal successors, (75), 6 states have internal predecessors, (75), 3 states have call successors, (14), 11 states have call predecessors, (14), 3 states have return successors, (12), 4 states have call predecessors, (12), 2 states have call successors, (12) [2022-03-20 12:06:23,005 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 159 transitions. [2022-03-20 12:06:23,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-03-20 12:06:23,005 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 12:06:23,005 INFO L499 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 12:06:23,005 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2022-03-20 12:06:23,006 INFO L403 AbstractCegarLoop]: === Iteration 79 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 12:06:23,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 12:06:23,006 INFO L85 PathProgramCache]: Analyzing trace with hash 954691984, now seen corresponding path program 1 times [2022-03-20 12:06:23,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 12:06:23,006 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137504960] [2022-03-20 12:06:23,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 12:06:23,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 12:06:23,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:06:23,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 12:06:23,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:06:23,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 12:06:23,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:06:23,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 12:06:23,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:06:23,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-03-20 12:06:23,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:06:23,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-20 12:06:23,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:06:23,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-03-20 12:06:23,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:06:23,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-20 12:06:23,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:06:23,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-20 12:06:23,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:06:23,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 12:06:23,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:06:23,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-20 12:06:23,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:06:23,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-03-20 12:06:23,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:06:23,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-03-20 12:06:23,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:06:23,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-03-20 12:06:23,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:06:23,167 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-03-20 12:06:23,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 12:06:23,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137504960] [2022-03-20 12:06:23,168 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2137504960] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 12:06:23,168 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 12:06:23,168 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-20 12:06:23,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122533690] [2022-03-20 12:06:23,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 12:06:23,168 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-20 12:06:23,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 12:06:23,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-20 12:06:23,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=81, Unknown=0, NotChecked=0, Total=132 [2022-03-20 12:06:23,169 INFO L87 Difference]: Start difference. First operand 146 states and 159 transitions. Second operand has 12 states, 12 states have (on average 6.75) internal successors, (81), 3 states have internal predecessors, (81), 3 states have call successors, (15), 11 states have call predecessors, (15), 2 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-03-20 12:06:23,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 12:06:23,406 INFO L93 Difference]: Finished difference Result 192 states and 212 transitions. [2022-03-20 12:06:23,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-20 12:06:23,407 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.75) internal successors, (81), 3 states have internal predecessors, (81), 3 states have call successors, (15), 11 states have call predecessors, (15), 2 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 116 [2022-03-20 12:06:23,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 12:06:23,407 INFO L225 Difference]: With dead ends: 192 [2022-03-20 12:06:23,407 INFO L226 Difference]: Without dead ends: 158 [2022-03-20 12:06:23,407 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=75, Invalid=107, Unknown=0, NotChecked=0, Total=182 [2022-03-20 12:06:23,408 INFO L913 BasicCegarLoop]: 125 mSDtfsCounter, 115 mSDsluCounter, 251 mSDsCounter, 0 mSdLazyCounter, 300 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 376 SdHoareTripleChecker+Invalid, 368 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 300 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-20 12:06:23,408 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [117 Valid, 376 Invalid, 368 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 300 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-20 12:06:23,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2022-03-20 12:06:23,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 152. [2022-03-20 12:06:23,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 117 states have (on average 1.1196581196581197) internal successors, (131), 119 states have internal predecessors, (131), 18 states have call successors, (18), 17 states have call predecessors, (18), 16 states have return successors, (17), 16 states have call predecessors, (17), 16 states have call successors, (17) [2022-03-20 12:06:23,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 166 transitions. [2022-03-20 12:06:23,428 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 166 transitions. Word has length 116 [2022-03-20 12:06:23,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 12:06:23,428 INFO L478 AbstractCegarLoop]: Abstraction has 152 states and 166 transitions. [2022-03-20 12:06:23,428 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.75) internal successors, (81), 3 states have internal predecessors, (81), 3 states have call successors, (15), 11 states have call predecessors, (15), 2 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-03-20 12:06:23,428 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 166 transitions. [2022-03-20 12:06:23,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-03-20 12:06:23,429 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 12:06:23,429 INFO L499 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 12:06:23,429 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2022-03-20 12:06:23,429 INFO L403 AbstractCegarLoop]: === Iteration 80 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 12:06:23,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 12:06:23,430 INFO L85 PathProgramCache]: Analyzing trace with hash 1647793681, now seen corresponding path program 1 times [2022-03-20 12:06:23,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 12:06:23,430 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27526934] [2022-03-20 12:06:23,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 12:06:23,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 12:06:23,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:06:23,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 12:06:23,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:06:23,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 12:06:23,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:06:23,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 12:06:23,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:06:23,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-03-20 12:06:23,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:06:23,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-20 12:06:23,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:06:23,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-03-20 12:06:23,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:06:23,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-20 12:06:23,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:06:23,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-20 12:06:23,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:06:23,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 12:06:23,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:06:23,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-20 12:06:23,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:06:23,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-03-20 12:06:23,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:06:23,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-03-20 12:06:23,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:06:23,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-03-20 12:06:23,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:06:23,643 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-03-20 12:06:23,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 12:06:23,643 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27526934] [2022-03-20 12:06:23,644 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [27526934] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 12:06:23,644 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 12:06:23,644 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-03-20 12:06:23,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739539846] [2022-03-20 12:06:23,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 12:06:23,644 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-03-20 12:06:23,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 12:06:23,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-03-20 12:06:23,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2022-03-20 12:06:23,645 INFO L87 Difference]: Start difference. First operand 152 states and 166 transitions. Second operand has 18 states, 18 states have (on average 4.5) internal successors, (81), 8 states have internal predecessors, (81), 5 states have call successors, (15), 11 states have call predecessors, (15), 3 states have return successors, (13), 6 states have call predecessors, (13), 4 states have call successors, (13) [2022-03-20 12:06:24,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 12:06:24,306 INFO L93 Difference]: Finished difference Result 292 states and 319 transitions. [2022-03-20 12:06:24,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-03-20 12:06:24,306 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.5) internal successors, (81), 8 states have internal predecessors, (81), 5 states have call successors, (15), 11 states have call predecessors, (15), 3 states have return successors, (13), 6 states have call predecessors, (13), 4 states have call successors, (13) Word has length 116 [2022-03-20 12:06:24,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 12:06:24,307 INFO L225 Difference]: With dead ends: 292 [2022-03-20 12:06:24,307 INFO L226 Difference]: Without dead ends: 152 [2022-03-20 12:06:24,307 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 229 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=225, Invalid=1181, Unknown=0, NotChecked=0, Total=1406 [2022-03-20 12:06:24,307 INFO L913 BasicCegarLoop]: 107 mSDtfsCounter, 256 mSDsluCounter, 302 mSDsCounter, 0 mSdLazyCounter, 1176 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 257 SdHoareTripleChecker+Valid, 409 SdHoareTripleChecker+Invalid, 1266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 1176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-20 12:06:24,308 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [257 Valid, 409 Invalid, 1266 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 1176 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-20 12:06:24,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2022-03-20 12:06:24,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 152. [2022-03-20 12:06:24,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 117 states have (on average 1.1111111111111112) internal successors, (130), 119 states have internal predecessors, (130), 18 states have call successors, (18), 17 states have call predecessors, (18), 16 states have return successors, (17), 16 states have call predecessors, (17), 16 states have call successors, (17) [2022-03-20 12:06:24,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 165 transitions. [2022-03-20 12:06:24,327 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 165 transitions. Word has length 116 [2022-03-20 12:06:24,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 12:06:24,328 INFO L478 AbstractCegarLoop]: Abstraction has 152 states and 165 transitions. [2022-03-20 12:06:24,328 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.5) internal successors, (81), 8 states have internal predecessors, (81), 5 states have call successors, (15), 11 states have call predecessors, (15), 3 states have return successors, (13), 6 states have call predecessors, (13), 4 states have call successors, (13) [2022-03-20 12:06:24,328 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 165 transitions. [2022-03-20 12:06:24,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-03-20 12:06:24,328 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 12:06:24,328 INFO L499 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 12:06:24,328 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2022-03-20 12:06:24,329 INFO L403 AbstractCegarLoop]: === Iteration 81 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 12:06:24,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 12:06:24,330 INFO L85 PathProgramCache]: Analyzing trace with hash 2114082993, now seen corresponding path program 1 times [2022-03-20 12:06:24,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 12:06:24,330 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871695339] [2022-03-20 12:06:24,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 12:06:24,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 12:06:24,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:06:24,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 12:06:24,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:06:24,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 12:06:24,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:06:24,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 12:06:24,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:06:24,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-03-20 12:06:24,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:06:24,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-20 12:06:24,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:06:24,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-03-20 12:06:24,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:06:24,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-20 12:06:24,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:06:24,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-20 12:06:24,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:06:24,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 12:06:24,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:06:24,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-20 12:06:24,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:06:24,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-03-20 12:06:24,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:06:24,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-03-20 12:06:24,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:06:24,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-03-20 12:06:24,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:06:24,478 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-03-20 12:06:24,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 12:06:24,478 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871695339] [2022-03-20 12:06:24,479 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [871695339] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 12:06:24,479 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 12:06:24,479 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-20 12:06:24,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299218511] [2022-03-20 12:06:24,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 12:06:24,479 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-20 12:06:24,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 12:06:24,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-20 12:06:24,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=81, Unknown=0, NotChecked=0, Total=132 [2022-03-20 12:06:24,480 INFO L87 Difference]: Start difference. First operand 152 states and 165 transitions. Second operand has 12 states, 12 states have (on average 6.75) internal successors, (81), 3 states have internal predecessors, (81), 3 states have call successors, (15), 11 states have call predecessors, (15), 2 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-03-20 12:06:24,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 12:06:24,822 INFO L93 Difference]: Finished difference Result 191 states and 206 transitions. [2022-03-20 12:06:24,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-20 12:06:24,822 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.75) internal successors, (81), 3 states have internal predecessors, (81), 3 states have call successors, (15), 11 states have call predecessors, (15), 2 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 116 [2022-03-20 12:06:24,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 12:06:24,823 INFO L225 Difference]: With dead ends: 191 [2022-03-20 12:06:24,823 INFO L226 Difference]: Without dead ends: 158 [2022-03-20 12:06:24,823 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=75, Invalid=107, Unknown=0, NotChecked=0, Total=182 [2022-03-20 12:06:24,823 INFO L913 BasicCegarLoop]: 123 mSDtfsCounter, 51 mSDsluCounter, 266 mSDsCounter, 0 mSdLazyCounter, 358 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 389 SdHoareTripleChecker+Invalid, 384 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 358 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-20 12:06:24,824 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [53 Valid, 389 Invalid, 384 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 358 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-20 12:06:24,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2022-03-20 12:06:24,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 152. [2022-03-20 12:06:24,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 117 states have (on average 1.0940170940170941) internal successors, (128), 119 states have internal predecessors, (128), 18 states have call successors, (18), 17 states have call predecessors, (18), 16 states have return successors, (17), 16 states have call predecessors, (17), 16 states have call successors, (17) [2022-03-20 12:06:24,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 163 transitions. [2022-03-20 12:06:24,843 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 163 transitions. Word has length 116 [2022-03-20 12:06:24,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 12:06:24,843 INFO L478 AbstractCegarLoop]: Abstraction has 152 states and 163 transitions. [2022-03-20 12:06:24,843 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.75) internal successors, (81), 3 states have internal predecessors, (81), 3 states have call successors, (15), 11 states have call predecessors, (15), 2 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-03-20 12:06:24,843 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 163 transitions. [2022-03-20 12:06:24,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-03-20 12:06:24,844 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 12:06:24,844 INFO L499 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 12:06:24,844 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2022-03-20 12:06:24,844 INFO L403 AbstractCegarLoop]: === Iteration 82 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 12:06:24,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 12:06:24,844 INFO L85 PathProgramCache]: Analyzing trace with hash 1707014418, now seen corresponding path program 1 times [2022-03-20 12:06:24,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 12:06:24,844 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688883025] [2022-03-20 12:06:24,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 12:06:24,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 12:06:24,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:06:24,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 12:06:24,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:06:24,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 12:06:24,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:06:24,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 12:06:24,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:06:24,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-03-20 12:06:24,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:06:25,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-20 12:06:25,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:06:25,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-03-20 12:06:25,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:06:25,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-20 12:06:25,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:06:25,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-20 12:06:25,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:06:25,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 12:06:25,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:06:25,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-20 12:06:25,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:06:25,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-03-20 12:06:25,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:06:25,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-03-20 12:06:25,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:06:25,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-03-20 12:06:25,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:06:25,136 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-03-20 12:06:25,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 12:06:25,136 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688883025] [2022-03-20 12:06:25,136 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [688883025] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 12:06:25,136 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 12:06:25,136 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-20 12:06:25,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989392864] [2022-03-20 12:06:25,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 12:06:25,136 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-20 12:06:25,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 12:06:25,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-20 12:06:25,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=311, Unknown=0, NotChecked=0, Total=380 [2022-03-20 12:06:25,137 INFO L87 Difference]: Start difference. First operand 152 states and 163 transitions. Second operand has 20 states, 20 states have (on average 4.05) internal successors, (81), 9 states have internal predecessors, (81), 5 states have call successors, (15), 11 states have call predecessors, (15), 3 states have return successors, (13), 6 states have call predecessors, (13), 4 states have call successors, (13) [2022-03-20 12:06:25,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 12:06:25,721 INFO L93 Difference]: Finished difference Result 152 states and 163 transitions. [2022-03-20 12:06:25,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-03-20 12:06:25,722 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 4.05) internal successors, (81), 9 states have internal predecessors, (81), 5 states have call successors, (15), 11 states have call predecessors, (15), 3 states have return successors, (13), 6 states have call predecessors, (13), 4 states have call successors, (13) Word has length 116 [2022-03-20 12:06:25,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 12:06:25,722 INFO L225 Difference]: With dead ends: 152 [2022-03-20 12:06:25,722 INFO L226 Difference]: Without dead ends: 0 [2022-03-20 12:06:25,723 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=159, Invalid=833, Unknown=0, NotChecked=0, Total=992 [2022-03-20 12:06:25,723 INFO L913 BasicCegarLoop]: 95 mSDtfsCounter, 304 mSDsluCounter, 226 mSDsCounter, 0 mSdLazyCounter, 942 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 304 SdHoareTripleChecker+Valid, 321 SdHoareTripleChecker+Invalid, 1069 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 942 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-20 12:06:25,723 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [304 Valid, 321 Invalid, 1069 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 942 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-20 12:06:25,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-03-20 12:06:25,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-03-20 12:06:25,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-20 12:06:25,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-03-20 12:06:25,724 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 116 [2022-03-20 12:06:25,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 12:06:25,724 INFO L478 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-03-20 12:06:25,724 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 4.05) internal successors, (81), 9 states have internal predecessors, (81), 5 states have call successors, (15), 11 states have call predecessors, (15), 3 states have return successors, (13), 6 states have call predecessors, (13), 4 states have call successors, (13) [2022-03-20 12:06:25,724 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-03-20 12:06:25,724 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-03-20 12:06:25,726 INFO L788 garLoopResultBuilder]: Registering result SAFE for location errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-03-20 12:06:25,727 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2022-03-20 12:06:25,728 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.