/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-7390193 [2022-04-05 09:29:25,330 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-05 09:29:25,331 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-05 09:29:25,387 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-04-05 09:29:25,387 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-04-05 09:29:25,389 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-04-05 09:29:25,391 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-04-05 09:29:25,393 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-04-05 09:29:25,394 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-04-05 09:29:25,397 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-04-05 09:29:25,398 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-04-05 09:29:25,399 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-04-05 09:29:25,399 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-04-05 09:29:25,401 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-04-05 09:29:25,401 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-04-05 09:29:25,403 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-04-05 09:29:25,404 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-04-05 09:29:25,404 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-04-05 09:29:25,406 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-04-05 09:29:25,410 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-04-05 09:29:25,411 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-04-05 09:29:25,412 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-04-05 09:29:25,413 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-04-05 09:29:25,413 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-04-05 09:29:25,414 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-04-05 09:29:25,419 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-04-05 09:29:25,419 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-04-05 09:29:25,419 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-04-05 09:29:25,420 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-04-05 09:29:25,420 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-04-05 09:29:25,421 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-04-05 09:29:25,421 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-04-05 09:29:25,422 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-04-05 09:29:25,423 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-04-05 09:29:25,423 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-04-05 09:29:25,424 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-04-05 09:29:25,424 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-04-05 09:29:25,424 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-04-05 09:29:25,424 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-04-05 09:29:25,424 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-05 09:29:25,425 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-05 09:29:25,426 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-05 09:29:25,427 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/loopacceleration/qvasr/qvasr_64.epf [2022-04-05 09:29:25,446 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-05 09:29:25,447 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-05 09:29:25,448 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-04-05 09:29:25,448 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-04-05 09:29:25,448 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-04-05 09:29:25,449 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-04-05 09:29:25,449 INFO L138 SettingsManager]: * Use SBE=true [2022-04-05 09:29:25,449 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-05 09:29:25,449 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-05 09:29:25,450 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-05 09:29:25,450 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-05 09:29:25,450 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-05 09:29:25,450 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-05 09:29:25,450 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-05 09:29:25,450 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-05 09:29:25,450 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-05 09:29:25,450 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-05 09:29:25,450 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-04-05 09:29:25,450 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-05 09:29:25,451 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-05 09:29:25,451 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-05 09:29:25,451 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-04-05 09:29:25,451 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-04-05 09:29:25,451 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-04-05 09:29:25,451 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-04-05 09:29:25,451 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-04-05 09:29:25,451 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-04-05 09:29:25,451 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-04-05 09:29:25,453 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-04-05 09:29:25,453 INFO L138 SettingsManager]: * TransformationType=LOOP_ACCELERATION_QVASR WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-04-05 09:29:25,617 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-05 09:29:25,630 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-05 09:29:25,632 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-05 09:29:25,633 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-05 09:29:25,633 INFO L275 PluginConnector]: CDTParser initialized [2022-04-05 09:29:25,634 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ntdrivers-simplified/cdaudio_simpl1.cil-2.c [2022-04-05 09:29:25,672 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b7edb74fa/70754eff797a43f3a656497a024ecce4/FLAG765750129 [2022-04-05 09:29:26,131 INFO L306 CDTParser]: Found 1 translation units. [2022-04-05 09:29:26,131 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ntdrivers-simplified/cdaudio_simpl1.cil-2.c [2022-04-05 09:29:26,172 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b7edb74fa/70754eff797a43f3a656497a024ecce4/FLAG765750129 [2022-04-05 09:29:26,473 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b7edb74fa/70754eff797a43f3a656497a024ecce4 [2022-04-05 09:29:26,475 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-05 09:29:26,475 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-04-05 09:29:26,477 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-05 09:29:26,477 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-05 09:29:26,489 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-05 09:29:26,490 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.04 09:29:26" (1/1) ... [2022-04-05 09:29:26,491 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c5bafea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 09:29:26, skipping insertion in model container [2022-04-05 09:29:26,491 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.04 09:29:26" (1/1) ... [2022-04-05 09:29:26,496 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-05 09:29:26,534 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-05 09:29:26,700 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ntdrivers-simplified/cdaudio_simpl1.cil-2.c[2073,2086] [2022-04-05 09:29:26,874 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-05 09:29:26,883 INFO L203 MainTranslator]: Completed pre-run [2022-04-05 09:29:26,903 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ntdrivers-simplified/cdaudio_simpl1.cil-2.c[2073,2086] [2022-04-05 09:29:26,953 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-05 09:29:26,969 INFO L208 MainTranslator]: Completed translation [2022-04-05 09:29:26,969 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 09:29:26 WrapperNode [2022-04-05 09:29:26,971 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-05 09:29:26,972 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-05 09:29:26,972 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-05 09:29:26,972 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-05 09:29:26,981 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 09:29:26" (1/1) ... [2022-04-05 09:29:26,981 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 09:29:26" (1/1) ... [2022-04-05 09:29:27,002 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 09:29:26" (1/1) ... [2022-04-05 09:29:27,002 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 09:29:26" (1/1) ... [2022-04-05 09:29:27,023 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 09:29:26" (1/1) ... [2022-04-05 09:29:27,033 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 09:29:26" (1/1) ... [2022-04-05 09:29:27,037 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 09:29:26" (1/1) ... [2022-04-05 09:29:27,043 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-05 09:29:27,044 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-05 09:29:27,044 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-05 09:29:27,044 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-05 09:29:27,044 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 09:29:26" (1/1) ... [2022-04-05 09:29:27,049 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-05 09:29:27,064 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 09:29:27,089 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-04-05 09:29:27,130 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-04-05 09:29:27,152 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-04-05 09:29:27,152 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-05 09:29:27,152 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-04-05 09:29:27,152 INFO L138 BoogieDeclarations]: Found implementation of procedure errorFn [2022-04-05 09:29:27,152 INFO L138 BoogieDeclarations]: Found implementation of procedure _BLAST_init [2022-04-05 09:29:27,153 INFO L138 BoogieDeclarations]: Found implementation of procedure SendSrbSynchronous [2022-04-05 09:29:27,153 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioSignalCompletion [2022-04-05 09:29:27,153 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioStartDevice [2022-04-05 09:29:27,154 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioPnp [2022-04-05 09:29:27,154 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioDeviceControl [2022-04-05 09:29:27,154 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioSendToNextDriver [2022-04-05 09:29:27,154 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioIsPlayActive [2022-04-05 09:29:27,154 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudio535DeviceControl [2022-04-05 09:29:27,154 INFO L138 BoogieDeclarations]: Found implementation of procedure AG_SetStatusAndReturn [2022-04-05 09:29:27,154 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudio435DeviceControl [2022-04-05 09:29:27,154 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioAtapiDeviceControl [2022-04-05 09:29:27,154 INFO L138 BoogieDeclarations]: Found implementation of procedure HpCdrProcessLastSession [2022-04-05 09:29:27,154 INFO L138 BoogieDeclarations]: Found implementation of procedure HPCdrCompletion [2022-04-05 09:29:27,154 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioHPCdrDeviceControl [2022-04-05 09:29:27,155 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioForwardIrpSynchronous [2022-04-05 09:29:27,155 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioUnload [2022-04-05 09:29:27,155 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioPower [2022-04-05 09:29:27,155 INFO L138 BoogieDeclarations]: Found implementation of procedure stub_driver_init [2022-04-05 09:29:27,155 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-04-05 09:29:27,155 INFO L138 BoogieDeclarations]: Found implementation of procedure stubMoreProcessingRequired [2022-04-05 09:29:27,155 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCallDriver [2022-04-05 09:29:27,155 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCompleteRequest [2022-04-05 09:29:27,155 INFO L138 BoogieDeclarations]: Found implementation of procedure KeSetEvent [2022-04-05 09:29:27,155 INFO L138 BoogieDeclarations]: Found implementation of procedure KeWaitForSingleObject [2022-04-05 09:29:27,155 INFO L138 BoogieDeclarations]: Found implementation of procedure PoCallDriver [2022-04-05 09:29:27,155 INFO L138 BoogieDeclarations]: Found implementation of procedure ZwClose [2022-04-05 09:29:27,155 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-04-05 09:29:27,155 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-04-05 09:29:27,156 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-04-05 09:29:27,156 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-05 09:29:27,156 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2022-04-05 09:29:27,156 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-04-05 09:29:27,156 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2022-04-05 09:29:27,156 INFO L130 BoogieDeclarations]: Found specification of procedure SendSrbSynchronous [2022-04-05 09:29:27,156 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioSignalCompletion [2022-04-05 09:29:27,156 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioStartDevice [2022-04-05 09:29:27,156 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioPnp [2022-04-05 09:29:27,156 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioDeviceControl [2022-04-05 09:29:27,157 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioSendToNextDriver [2022-04-05 09:29:27,157 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioIsPlayActive [2022-04-05 09:29:27,157 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudio535DeviceControl [2022-04-05 09:29:27,157 INFO L130 BoogieDeclarations]: Found specification of procedure AG_SetStatusAndReturn [2022-04-05 09:29:27,157 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudio435DeviceControl [2022-04-05 09:29:27,157 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioAtapiDeviceControl [2022-04-05 09:29:27,157 INFO L130 BoogieDeclarations]: Found specification of procedure HPCdrCompletion [2022-04-05 09:29:27,157 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioHPCdrDeviceControl [2022-04-05 09:29:27,157 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioForwardIrpSynchronous [2022-04-05 09:29:27,157 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioPower [2022-04-05 09:29:27,157 INFO L130 BoogieDeclarations]: Found specification of procedure IofCallDriver [2022-04-05 09:29:27,157 INFO L130 BoogieDeclarations]: Found specification of procedure KeSetEvent [2022-04-05 09:29:27,157 INFO L130 BoogieDeclarations]: Found specification of procedure KeWaitForSingleObject [2022-04-05 09:29:27,157 INFO L130 BoogieDeclarations]: Found specification of procedure PoCallDriver [2022-04-05 09:29:27,158 INFO L130 BoogieDeclarations]: Found specification of procedure ZwClose [2022-04-05 09:29:27,158 INFO L130 BoogieDeclarations]: Found specification of procedure IofCompleteRequest [2022-04-05 09:29:27,158 INFO L130 BoogieDeclarations]: Found specification of procedure errorFn [2022-04-05 09:29:27,158 INFO L130 BoogieDeclarations]: Found specification of procedure _BLAST_init [2022-04-05 09:29:27,158 INFO L130 BoogieDeclarations]: Found specification of procedure HpCdrProcessLastSession [2022-04-05 09:29:27,159 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioUnload [2022-04-05 09:29:27,159 INFO L130 BoogieDeclarations]: Found specification of procedure stub_driver_init [2022-04-05 09:29:27,159 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-04-05 09:29:27,159 INFO L130 BoogieDeclarations]: Found specification of procedure stubMoreProcessingRequired [2022-04-05 09:29:27,159 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-04-05 09:29:27,159 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-05 09:29:27,159 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-05 09:29:27,160 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-05 09:29:27,160 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-04-05 09:29:27,160 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-05 09:29:27,376 INFO L234 CfgBuilder]: Building ICFG [2022-04-05 09:29:27,377 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-05 09:29:27,495 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-05 09:29:27,565 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume !false; [2022-04-05 09:29:27,565 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##14: assume false; [2022-04-05 09:29:27,569 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-05 09:29:27,598 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##18: assume !false; [2022-04-05 09:29:27,598 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##17: assume false; [2022-04-05 09:29:27,616 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-05 09:29:27,627 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##16: assume !false; [2022-04-05 09:29:27,627 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume false; [2022-04-05 09:29:27,674 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-05 09:29:27,700 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##6: assume !false; [2022-04-05 09:29:27,700 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint L305: #res := 0; [2022-04-05 09:29:27,700 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##5: assume false; [2022-04-05 09:29:27,713 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-05 09:29:27,809 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##21: assume false; [2022-04-05 09:29:27,809 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##22: assume !false; [2022-04-05 09:29:27,810 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-05 09:29:27,830 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##21: assume !false; [2022-04-05 09:29:27,830 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##20: assume false; [2022-04-05 09:29:27,851 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-05 09:29:27,863 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##10: assume !false; [2022-04-05 09:29:27,863 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##9: assume false; [2022-04-05 09:29:27,865 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-05 09:29:27,978 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##26: assume !false; [2022-04-05 09:29:27,978 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##25: assume false; [2022-04-05 09:29:27,985 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-05 09:29:27,988 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-04-05 09:29:27,988 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-04-05 09:29:28,011 INFO L275 CfgBuilder]: Performing block encoding [2022-04-05 09:29:28,020 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-05 09:29:28,020 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-04-05 09:29:28,022 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.04 09:29:28 BoogieIcfgContainer [2022-04-05 09:29:28,022 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-05 09:29:28,023 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-04-05 09:29:28,023 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-04-05 09:29:28,035 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-04-05 09:29:28,037 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.04 09:29:28" (1/1) ... [2022-04-05 09:29:28,039 INFO L168 ansformationObserver]: Applying ICFG transformation LOOP_ACCELERATION_QVASR [2022-04-05 09:29:28,086 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 05.04 09:29:28 BasicIcfg [2022-04-05 09:29:28,086 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-04-05 09:29:28,088 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-05 09:29:28,088 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-05 09:29:28,090 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-05 09:29:28,091 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.04 09:29:26" (1/4) ... [2022-04-05 09:29:28,091 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@eb8b0ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.04 09:29:28, skipping insertion in model container [2022-04-05 09:29:28,092 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 09:29:26" (2/4) ... [2022-04-05 09:29:28,092 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@eb8b0ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.04 09:29:28, skipping insertion in model container [2022-04-05 09:29:28,092 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.04 09:29:28" (3/4) ... [2022-04-05 09:29:28,092 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@eb8b0ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.04 09:29:28, skipping insertion in model container [2022-04-05 09:29:28,092 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 05.04 09:29:28" (4/4) ... [2022-04-05 09:29:28,093 INFO L111 eAbstractionObserver]: Analyzing ICFG cdaudio_simpl1.cil-2.cqvasr [2022-04-05 09:29:28,098 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-04-05 09:29:28,098 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-04-05 09:29:28,142 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-05 09:29:28,147 INFO L340 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP [2022-04-05 09:29:28,148 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-04-05 09:29:28,178 INFO L276 IsEmpty]: Start isEmpty. Operand has 515 states, 382 states have (on average 1.486910994764398) internal successors, (568), 402 states have internal predecessors, (568), 102 states have call successors, (102), 29 states have call predecessors, (102), 29 states have return successors, (102), 98 states have call predecessors, (102), 102 states have call successors, (102) [2022-04-05 09:29:28,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-04-05 09:29:28,183 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 09:29:28,184 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 09:29:28,187 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 09:29:28,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 09:29:28,193 INFO L85 PathProgramCache]: Analyzing trace with hash -1376594176, now seen corresponding path program 1 times [2022-04-05 09:29:28,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 09:29:28,200 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534699438] [2022-04-05 09:29:28,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 09:29:28,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 09:29:28,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:29:28,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 09:29:28,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:29:28,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 09:29:28,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:29:28,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-05 09:29:28,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 09:29:28,534 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1534699438] [2022-04-05 09:29:28,534 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1534699438] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 09:29:28,534 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 09:29:28,534 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-05 09:29:28,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211262330] [2022-04-05 09:29:28,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 09:29:28,540 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-04-05 09:29:28,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 09:29:28,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-04-05 09:29:28,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-04-05 09:29:28,568 INFO L87 Difference]: Start difference. First operand has 515 states, 382 states have (on average 1.486910994764398) internal successors, (568), 402 states have internal predecessors, (568), 102 states have call successors, (102), 29 states have call predecessors, (102), 29 states have return successors, (102), 98 states have call predecessors, (102), 102 states have call successors, (102) Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 3 states have internal predecessors, (14), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-04-05 09:29:30,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 09:29:30,143 INFO L93 Difference]: Finished difference Result 1043 states and 1675 transitions. [2022-04-05 09:29:30,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-05 09:29:30,145 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 3 states have internal predecessors, (14), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 20 [2022-04-05 09:29:30,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 09:29:30,157 INFO L225 Difference]: With dead ends: 1043 [2022-04-05 09:29:30,157 INFO L226 Difference]: Without dead ends: 663 [2022-04-05 09:29:30,163 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-04-05 09:29:30,165 INFO L913 BasicCegarLoop]: 738 mSDtfsCounter, 770 mSDsluCounter, 265 mSDsCounter, 0 mSdLazyCounter, 1132 mSolverCounterSat, 308 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 771 SdHoareTripleChecker+Valid, 1003 SdHoareTripleChecker+Invalid, 1440 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 308 IncrementalHoareTripleChecker+Valid, 1132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-04-05 09:29:30,166 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [771 Valid, 1003 Invalid, 1440 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [308 Valid, 1132 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-04-05 09:29:30,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 663 states. [2022-04-05 09:29:30,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 663 to 507. [2022-04-05 09:29:30,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 507 states, 377 states have (on average 1.4562334217506632) internal successors, (549), 395 states have internal predecessors, (549), 102 states have call successors, (102), 29 states have call predecessors, (102), 27 states have return successors, (86), 86 states have call predecessors, (86), 86 states have call successors, (86) [2022-04-05 09:29:30,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 507 states to 507 states and 737 transitions. [2022-04-05 09:29:30,242 INFO L78 Accepts]: Start accepts. Automaton has 507 states and 737 transitions. Word has length 20 [2022-04-05 09:29:30,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 09:29:30,242 INFO L478 AbstractCegarLoop]: Abstraction has 507 states and 737 transitions. [2022-04-05 09:29:30,242 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 3 states have internal predecessors, (14), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-04-05 09:29:30,242 INFO L276 IsEmpty]: Start isEmpty. Operand 507 states and 737 transitions. [2022-04-05 09:29:30,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-04-05 09:29:30,243 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 09:29:30,243 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 09:29:30,243 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-04-05 09:29:30,243 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 09:29:30,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 09:29:30,244 INFO L85 PathProgramCache]: Analyzing trace with hash 752029052, now seen corresponding path program 1 times [2022-04-05 09:29:30,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 09:29:30,244 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481335722] [2022-04-05 09:29:30,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 09:29:30,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 09:29:30,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:29:30,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 09:29:30,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:29:30,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 09:29:30,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:29:30,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-05 09:29:30,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:29:30,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-05 09:29:30,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 09:29:30,355 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481335722] [2022-04-05 09:29:30,356 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1481335722] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 09:29:30,356 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 09:29:30,356 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-04-05 09:29:30,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633575044] [2022-04-05 09:29:30,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 09:29:30,357 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-05 09:29:30,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 09:29:30,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-05 09:29:30,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-04-05 09:29:30,358 INFO L87 Difference]: Start difference. First operand 507 states and 737 transitions. Second operand has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 3 states have internal predecessors, (16), 3 states have call successors, (6), 6 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-04-05 09:29:31,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 09:29:31,740 INFO L93 Difference]: Finished difference Result 961 states and 1420 transitions. [2022-04-05 09:29:31,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-05 09:29:31,741 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 3 states have internal predecessors, (16), 3 states have call successors, (6), 6 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 25 [2022-04-05 09:29:31,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 09:29:31,746 INFO L225 Difference]: With dead ends: 961 [2022-04-05 09:29:31,746 INFO L226 Difference]: Without dead ends: 842 [2022-04-05 09:29:31,747 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-04-05 09:29:31,748 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, 1.2s IncrementalHoareTripleChecker+Time [2022-04-05 09:29:31,748 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1499 Valid, 1012 Invalid, 1353 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [428 Valid, 925 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-04-05 09:29:31,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 842 states. [2022-04-05 09:29:31,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 842 to 662. [2022-04-05 09:29:31,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 662 states, 501 states have (on average 1.407185628742515) internal successors, (705), 508 states have internal predecessors, (705), 111 states have call successors, (111), 40 states have call predecessors, (111), 49 states have return successors, (145), 119 states have call predecessors, (145), 99 states have call successors, (145) [2022-04-05 09:29:31,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 662 states to 662 states and 961 transitions. [2022-04-05 09:29:31,797 INFO L78 Accepts]: Start accepts. Automaton has 662 states and 961 transitions. Word has length 25 [2022-04-05 09:29:31,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 09:29:31,798 INFO L478 AbstractCegarLoop]: Abstraction has 662 states and 961 transitions. [2022-04-05 09:29:31,798 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 3 states have internal predecessors, (16), 3 states have call successors, (6), 6 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-04-05 09:29:31,798 INFO L276 IsEmpty]: Start isEmpty. Operand 662 states and 961 transitions. [2022-04-05 09:29:31,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-04-05 09:29:31,799 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 09:29:31,799 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] [2022-04-05 09:29:31,799 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-04-05 09:29:31,799 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 09:29:31,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 09:29:31,800 INFO L85 PathProgramCache]: Analyzing trace with hash -2092358377, now seen corresponding path program 1 times [2022-04-05 09:29:31,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 09:29:31,800 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626654894] [2022-04-05 09:29:31,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 09:29:31,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 09:29:31,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:29:31,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 09:29:31,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:29:31,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 09:29:31,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:29:31,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-05 09:29:31,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:29:31,921 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-05 09:29:31,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 09:29:31,922 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626654894] [2022-04-05 09:29:31,922 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1626654894] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 09:29:31,922 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 09:29:31,922 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-04-05 09:29:31,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11614387] [2022-04-05 09:29:31,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 09:29:31,923 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-05 09:29:31,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 09:29:31,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-05 09:29:31,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-04-05 09:29:31,923 INFO L87 Difference]: Start difference. First operand 662 states and 961 transitions. Second operand has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 3 states have internal predecessors, (19), 3 states have call successors, (8), 6 states have call predecessors, (8), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-04-05 09:29:33,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 09:29:33,159 INFO L93 Difference]: Finished difference Result 1142 states and 1641 transitions. [2022-04-05 09:29:33,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-05 09:29:33,160 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 3 states have internal predecessors, (19), 3 states have call successors, (8), 6 states have call predecessors, (8), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 30 [2022-04-05 09:29:33,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 09:29:33,164 INFO L225 Difference]: With dead ends: 1142 [2022-04-05 09:29:33,165 INFO L226 Difference]: Without dead ends: 966 [2022-04-05 09:29:33,179 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-04-05 09:29:33,180 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, 1.1s IncrementalHoareTripleChecker+Time [2022-04-05 09:29:33,181 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1929 Valid, 860 Invalid, 1246 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [543 Valid, 703 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-04-05 09:29:33,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 966 states. [2022-04-05 09:29:33,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 966 to 787. [2022-04-05 09:29:33,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 787 states, 610 states have (on average 1.4032786885245903) internal successors, (856), 613 states have internal predecessors, (856), 113 states have call successors, (113), 46 states have call predecessors, (113), 63 states have return successors, (163), 130 states have call predecessors, (163), 104 states have call successors, (163) [2022-04-05 09:29:33,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 787 states to 787 states and 1132 transitions. [2022-04-05 09:29:33,223 INFO L78 Accepts]: Start accepts. Automaton has 787 states and 1132 transitions. Word has length 30 [2022-04-05 09:29:33,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 09:29:33,223 INFO L478 AbstractCegarLoop]: Abstraction has 787 states and 1132 transitions. [2022-04-05 09:29:33,223 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 3 states have internal predecessors, (19), 3 states have call successors, (8), 6 states have call predecessors, (8), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-04-05 09:29:33,223 INFO L276 IsEmpty]: Start isEmpty. Operand 787 states and 1132 transitions. [2022-04-05 09:29:33,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-04-05 09:29:33,224 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 09:29:33,225 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 09:29:33,225 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-04-05 09:29:33,225 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 09:29:33,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 09:29:33,225 INFO L85 PathProgramCache]: Analyzing trace with hash -1387045423, now seen corresponding path program 1 times [2022-04-05 09:29:33,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 09:29:33,225 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044097101] [2022-04-05 09:29:33,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 09:29:33,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 09:29:33,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:29:33,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 09:29:33,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:29:33,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 09:29:33,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:29:33,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-05 09:29:33,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:29:33,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-05 09:29:33,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 09:29:33,318 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044097101] [2022-04-05 09:29:33,318 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1044097101] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 09:29:33,318 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 09:29:33,318 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-04-05 09:29:33,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904504420] [2022-04-05 09:29:33,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 09:29:33,318 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-05 09:29:33,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 09:29:33,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-05 09:29:33,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-04-05 09:29:33,319 INFO L87 Difference]: Start difference. First operand 787 states and 1132 transitions. Second operand has 6 states, 6 states have (on average 3.5) internal successors, (21), 3 states have internal predecessors, (21), 2 states have call successors, (7), 5 states have call predecessors, (7), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-04-05 09:29:35,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 09:29:35,178 INFO L93 Difference]: Finished difference Result 1624 states and 2440 transitions. [2022-04-05 09:29:35,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-04-05 09:29:35,179 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 3 states have internal predecessors, (21), 2 states have call successors, (7), 5 states have call predecessors, (7), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 31 [2022-04-05 09:29:35,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 09:29:35,185 INFO L225 Difference]: With dead ends: 1624 [2022-04-05 09:29:35,186 INFO L226 Difference]: Without dead ends: 1340 [2022-04-05 09:29:35,187 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-04-05 09:29:35,194 INFO L913 BasicCegarLoop]: 1003 mSDtfsCounter, 1092 mSDsluCounter, 275 mSDsCounter, 0 mSdLazyCounter, 1913 mSolverCounterSat, 374 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1095 SdHoareTripleChecker+Valid, 1278 SdHoareTripleChecker+Invalid, 2287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 374 IncrementalHoareTripleChecker+Valid, 1913 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-04-05 09:29:35,196 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1095 Valid, 1278 Invalid, 2287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [374 Valid, 1913 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-04-05 09:29:35,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1340 states. [2022-04-05 09:29:35,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1340 to 905. [2022-04-05 09:29:35,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 905 states, 707 states have (on average 1.413012729844413) internal successors, (999), 709 states have internal predecessors, (999), 126 states have call successors, (126), 54 states have call predecessors, (126), 71 states have return successors, (220), 144 states have call predecessors, (220), 117 states have call successors, (220) [2022-04-05 09:29:35,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 905 states to 905 states and 1345 transitions. [2022-04-05 09:29:35,256 INFO L78 Accepts]: Start accepts. Automaton has 905 states and 1345 transitions. Word has length 31 [2022-04-05 09:29:35,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 09:29:35,256 INFO L478 AbstractCegarLoop]: Abstraction has 905 states and 1345 transitions. [2022-04-05 09:29:35,256 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 3 states have internal predecessors, (21), 2 states have call successors, (7), 5 states have call predecessors, (7), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-04-05 09:29:35,256 INFO L276 IsEmpty]: Start isEmpty. Operand 905 states and 1345 transitions. [2022-04-05 09:29:35,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-04-05 09:29:35,260 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 09:29:35,260 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 09:29:35,260 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-04-05 09:29:35,261 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 09:29:35,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 09:29:35,261 INFO L85 PathProgramCache]: Analyzing trace with hash -81256447, now seen corresponding path program 1 times [2022-04-05 09:29:35,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 09:29:35,262 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613741162] [2022-04-05 09:29:35,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 09:29:35,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 09:29:35,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:29:35,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 09:29:35,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:29:35,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 09:29:35,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:29:35,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-05 09:29:35,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:29:35,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-05 09:29:35,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 09:29:35,436 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613741162] [2022-04-05 09:29:35,436 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [613741162] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 09:29:35,436 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 09:29:35,436 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-04-05 09:29:35,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156135979] [2022-04-05 09:29:35,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 09:29:35,437 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-04-05 09:29:35,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 09:29:35,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-04-05 09:29:35,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-04-05 09:29:35,437 INFO L87 Difference]: Start difference. First operand 905 states and 1345 transitions. Second operand has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 6 states have internal predecessors, (22), 4 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-04-05 09:29:36,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 09:29:36,718 INFO L93 Difference]: Finished difference Result 1626 states and 2474 transitions. [2022-04-05 09:29:36,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-04-05 09:29:36,719 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 6 states have internal predecessors, (22), 4 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 32 [2022-04-05 09:29:36,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 09:29:36,724 INFO L225 Difference]: With dead ends: 1626 [2022-04-05 09:29:36,724 INFO L226 Difference]: Without dead ends: 1042 [2022-04-05 09:29:36,725 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2022-04-05 09:29:36,726 INFO L913 BasicCegarLoop]: 731 mSDtfsCounter, 2117 mSDsluCounter, 259 mSDsCounter, 0 mSdLazyCounter, 1085 mSolverCounterSat, 698 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2123 SdHoareTripleChecker+Valid, 990 SdHoareTripleChecker+Invalid, 1783 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 698 IncrementalHoareTripleChecker+Valid, 1085 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-04-05 09:29:36,726 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [2123 Valid, 990 Invalid, 1783 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [698 Valid, 1085 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-04-05 09:29:36,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1042 states. [2022-04-05 09:29:36,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1042 to 833. [2022-04-05 09:29:36,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 833 states, 648 states have (on average 1.3981481481481481) internal successors, (906), 651 states have internal predecessors, (906), 117 states have call successors, (117), 50 states have call predecessors, (117), 67 states have return successors, (177), 134 states have call predecessors, (177), 108 states have call successors, (177) [2022-04-05 09:29:36,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 833 states to 833 states and 1200 transitions. [2022-04-05 09:29:36,771 INFO L78 Accepts]: Start accepts. Automaton has 833 states and 1200 transitions. Word has length 32 [2022-04-05 09:29:36,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 09:29:36,773 INFO L478 AbstractCegarLoop]: Abstraction has 833 states and 1200 transitions. [2022-04-05 09:29:36,773 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 6 states have internal predecessors, (22), 4 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-04-05 09:29:36,773 INFO L276 IsEmpty]: Start isEmpty. Operand 833 states and 1200 transitions. [2022-04-05 09:29:36,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-04-05 09:29:36,775 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 09:29:36,775 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 09:29:36,775 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-04-05 09:29:36,775 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 09:29:36,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 09:29:36,776 INFO L85 PathProgramCache]: Analyzing trace with hash 2003772890, now seen corresponding path program 1 times [2022-04-05 09:29:36,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 09:29:36,776 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204846821] [2022-04-05 09:29:36,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 09:29:36,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 09:29:36,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:29:36,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 09:29:36,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:29:36,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 09:29:36,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:29:36,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-05 09:29:36,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:29:36,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-05 09:29:36,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 09:29:36,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1204846821] [2022-04-05 09:29:36,876 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1204846821] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 09:29:36,876 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 09:29:36,876 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-04-05 09:29:36,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886528484] [2022-04-05 09:29:36,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 09:29:36,877 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-05 09:29:36,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 09:29:36,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-05 09:29:36,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-04-05 09:29:36,877 INFO L87 Difference]: Start difference. First operand 833 states and 1200 transitions. Second operand has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 3 states have internal predecessors, (25), 3 states have call successors, (8), 6 states have call predecessors, (8), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-04-05 09:29:38,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 09:29:38,492 INFO L93 Difference]: Finished difference Result 963 states and 1422 transitions. [2022-04-05 09:29:38,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-05 09:29:38,493 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 3 states have internal predecessors, (25), 3 states have call successors, (8), 6 states have call predecessors, (8), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 36 [2022-04-05 09:29:38,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 09:29:38,496 INFO L225 Difference]: With dead ends: 963 [2022-04-05 09:29:38,496 INFO L226 Difference]: Without dead ends: 959 [2022-04-05 09:29:38,497 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-04-05 09:29:38,497 INFO L913 BasicCegarLoop]: 710 mSDtfsCounter, 407 mSDsluCounter, 265 mSDsCounter, 0 mSdLazyCounter, 1876 mSolverCounterSat, 141 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 408 SdHoareTripleChecker+Valid, 975 SdHoareTripleChecker+Invalid, 2017 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 141 IncrementalHoareTripleChecker+Valid, 1876 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-04-05 09:29:38,497 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [408 Valid, 975 Invalid, 2017 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [141 Valid, 1876 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-04-05 09:29:38,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 959 states. [2022-04-05 09:29:38,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 959 to 832. [2022-04-05 09:29:38,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 832 states, 648 states have (on average 1.3950617283950617) internal successors, (904), 650 states have internal predecessors, (904), 116 states have call successors, (116), 50 states have call predecessors, (116), 67 states have return successors, (177), 134 states have call predecessors, (177), 108 states have call successors, (177) [2022-04-05 09:29:38,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 832 states to 832 states and 1197 transitions. [2022-04-05 09:29:38,542 INFO L78 Accepts]: Start accepts. Automaton has 832 states and 1197 transitions. Word has length 36 [2022-04-05 09:29:38,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 09:29:38,543 INFO L478 AbstractCegarLoop]: Abstraction has 832 states and 1197 transitions. [2022-04-05 09:29:38,543 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 3 states have internal predecessors, (25), 3 states have call successors, (8), 6 states have call predecessors, (8), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-04-05 09:29:38,543 INFO L276 IsEmpty]: Start isEmpty. Operand 832 states and 1197 transitions. [2022-04-05 09:29:38,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-04-05 09:29:38,544 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 09:29:38,544 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 09:29:38,544 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-04-05 09:29:38,544 INFO L403 AbstractCegarLoop]: === Iteration 7 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 09:29:38,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 09:29:38,544 INFO L85 PathProgramCache]: Analyzing trace with hash 1794233418, now seen corresponding path program 1 times [2022-04-05 09:29:38,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 09:29:38,545 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272809000] [2022-04-05 09:29:38,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 09:29:38,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 09:29:38,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:29:38,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 09:29:38,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:29:38,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 09:29:38,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:29:38,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-05 09:29:38,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:29:38,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-05 09:29:38,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 09:29:38,669 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272809000] [2022-04-05 09:29:38,669 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [272809000] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 09:29:38,669 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 09:29:38,669 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-04-05 09:29:38,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581412864] [2022-04-05 09:29:38,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 09:29:38,669 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-04-05 09:29:38,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 09:29:38,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-04-05 09:29:38,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-04-05 09:29:38,670 INFO L87 Difference]: Start difference. First operand 832 states and 1197 transitions. Second operand has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 4 states have internal predecessors, (26), 3 states have call successors, (10), 6 states have call predecessors, (10), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-04-05 09:29:40,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 09:29:40,570 INFO L93 Difference]: Finished difference Result 1409 states and 2012 transitions. [2022-04-05 09:29:40,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-04-05 09:29:40,570 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 4 states have internal predecessors, (26), 3 states have call successors, (10), 6 states have call predecessors, (10), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 39 [2022-04-05 09:29:40,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 09:29:40,595 INFO L225 Difference]: With dead ends: 1409 [2022-04-05 09:29:40,595 INFO L226 Difference]: Without dead ends: 993 [2022-04-05 09:29:40,596 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 [2022-04-05 09:29:40,597 INFO L913 BasicCegarLoop]: 812 mSDtfsCounter, 744 mSDsluCounter, 454 mSDsCounter, 0 mSdLazyCounter, 2621 mSolverCounterSat, 235 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 746 SdHoareTripleChecker+Valid, 1266 SdHoareTripleChecker+Invalid, 2856 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 235 IncrementalHoareTripleChecker+Valid, 2621 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-04-05 09:29:40,597 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [746 Valid, 1266 Invalid, 2856 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [235 Valid, 2621 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-04-05 09:29:40,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 993 states. [2022-04-05 09:29:40,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 993 to 734. [2022-04-05 09:29:40,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 734 states, 570 states have (on average 1.3859649122807018) internal successors, (790), 573 states have internal predecessors, (790), 105 states have call successors, (105), 45 states have call predecessors, (105), 58 states have return successors, (131), 118 states have call predecessors, (131), 97 states have call successors, (131) [2022-04-05 09:29:40,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 734 states to 734 states and 1026 transitions. [2022-04-05 09:29:40,641 INFO L78 Accepts]: Start accepts. Automaton has 734 states and 1026 transitions. Word has length 39 [2022-04-05 09:29:40,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 09:29:40,641 INFO L478 AbstractCegarLoop]: Abstraction has 734 states and 1026 transitions. [2022-04-05 09:29:40,641 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 4 states have internal predecessors, (26), 3 states have call successors, (10), 6 states have call predecessors, (10), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-04-05 09:29:40,641 INFO L276 IsEmpty]: Start isEmpty. Operand 734 states and 1026 transitions. [2022-04-05 09:29:40,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-04-05 09:29:40,642 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 09:29:40,643 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 09:29:40,643 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-04-05 09:29:40,643 INFO L403 AbstractCegarLoop]: === Iteration 8 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 09:29:40,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 09:29:40,643 INFO L85 PathProgramCache]: Analyzing trace with hash -1491782484, now seen corresponding path program 1 times [2022-04-05 09:29:40,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 09:29:40,643 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813973180] [2022-04-05 09:29:40,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 09:29:40,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 09:29:40,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:29:40,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 09:29:40,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:29:40,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 09:29:40,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:29:40,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-05 09:29:40,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:29:40,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-05 09:29:40,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 09:29:40,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [813973180] [2022-04-05 09:29:40,745 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [813973180] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 09:29:40,745 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 09:29:40,746 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-04-05 09:29:40,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030960000] [2022-04-05 09:29:40,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 09:29:40,746 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-05 09:29:40,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 09:29:40,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-05 09:29:40,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-04-05 09:29:40,747 INFO L87 Difference]: Start difference. First operand 734 states and 1026 transitions. Second operand has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 3 states have internal predecessors, (28), 3 states have call successors, (9), 6 states have call predecessors, (9), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-04-05 09:29:41,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 09:29:41,984 INFO L93 Difference]: Finished difference Result 975 states and 1402 transitions. [2022-04-05 09:29:41,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-05 09:29:41,985 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 3 states have internal predecessors, (28), 3 states have call successors, (9), 6 states have call predecessors, (9), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 40 [2022-04-05 09:29:41,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 09:29:41,988 INFO L225 Difference]: With dead ends: 975 [2022-04-05 09:29:41,988 INFO L226 Difference]: Without dead ends: 957 [2022-04-05 09:29:41,989 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-04-05 09:29:41,989 INFO L913 BasicCegarLoop]: 669 mSDtfsCounter, 1139 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 999 mSolverCounterSat, 248 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1147 SdHoareTripleChecker+Valid, 749 SdHoareTripleChecker+Invalid, 1247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 248 IncrementalHoareTripleChecker+Valid, 999 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-04-05 09:29:41,989 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1147 Valid, 749 Invalid, 1247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [248 Valid, 999 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-04-05 09:29:41,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 957 states. [2022-04-05 09:29:42,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 957 to 754. [2022-04-05 09:29:42,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 754 states, 588 states have (on average 1.3962585034013606) internal successors, (821), 600 states have internal predecessors, (821), 107 states have call successors, (107), 48 states have call predecessors, (107), 58 states have return successors, (124), 110 states have call predecessors, (124), 100 states have call successors, (124) [2022-04-05 09:29:42,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 754 states to 754 states and 1052 transitions. [2022-04-05 09:29:42,029 INFO L78 Accepts]: Start accepts. Automaton has 754 states and 1052 transitions. Word has length 40 [2022-04-05 09:29:42,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 09:29:42,029 INFO L478 AbstractCegarLoop]: Abstraction has 754 states and 1052 transitions. [2022-04-05 09:29:42,030 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 3 states have internal predecessors, (28), 3 states have call successors, (9), 6 states have call predecessors, (9), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-04-05 09:29:42,030 INFO L276 IsEmpty]: Start isEmpty. Operand 754 states and 1052 transitions. [2022-04-05 09:29:42,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-04-05 09:29:42,031 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 09:29:42,031 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 09:29:42,031 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-04-05 09:29:42,031 INFO L403 AbstractCegarLoop]: === Iteration 9 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 09:29:42,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 09:29:42,032 INFO L85 PathProgramCache]: Analyzing trace with hash 938541339, now seen corresponding path program 1 times [2022-04-05 09:29:42,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 09:29:42,032 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733736699] [2022-04-05 09:29:42,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 09:29:42,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 09:29:42,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:29:42,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 09:29:42,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:29:42,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 09:29:42,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:29:42,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-05 09:29:42,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:29:42,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-04-05 09:29:42,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:29:42,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-05 09:29:42,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 09:29:42,129 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733736699] [2022-04-05 09:29:42,129 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [733736699] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 09:29:42,129 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 09:29:42,129 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-04-05 09:29:42,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862683589] [2022-04-05 09:29:42,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 09:29:42,129 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-04-05 09:29:42,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 09:29:42,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-04-05 09:29:42,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-04-05 09:29:42,130 INFO L87 Difference]: Start difference. First operand 754 states and 1052 transitions. Second operand has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 3 states have internal predecessors, (32), 3 states have call successors, (10), 7 states have call predecessors, (10), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-04-05 09:29:43,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 09:29:43,626 INFO L93 Difference]: Finished difference Result 1159 states and 1659 transitions. [2022-04-05 09:29:43,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-04-05 09:29:43,627 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 3 states have internal predecessors, (32), 3 states have call successors, (10), 7 states have call predecessors, (10), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 46 [2022-04-05 09:29:43,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 09:29:43,630 INFO L225 Difference]: With dead ends: 1159 [2022-04-05 09:29:43,630 INFO L226 Difference]: Without dead ends: 934 [2022-04-05 09:29:43,631 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2022-04-05 09:29:43,632 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 [2022-04-05 09:29:43,632 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] [2022-04-05 09:29:43,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 934 states. [2022-04-05 09:29:43,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 934 to 754. [2022-04-05 09:29:43,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 754 states, 588 states have (on average 1.3945578231292517) internal successors, (820), 600 states have internal predecessors, (820), 107 states have call successors, (107), 48 states have call predecessors, (107), 58 states have return successors, (124), 110 states have call predecessors, (124), 100 states have call successors, (124) [2022-04-05 09:29:43,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 754 states to 754 states and 1051 transitions. [2022-04-05 09:29:43,670 INFO L78 Accepts]: Start accepts. Automaton has 754 states and 1051 transitions. Word has length 46 [2022-04-05 09:29:43,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 09:29:43,670 INFO L478 AbstractCegarLoop]: Abstraction has 754 states and 1051 transitions. [2022-04-05 09:29:43,670 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 3 states have internal predecessors, (32), 3 states have call successors, (10), 7 states have call predecessors, (10), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-04-05 09:29:43,671 INFO L276 IsEmpty]: Start isEmpty. Operand 754 states and 1051 transitions. [2022-04-05 09:29:43,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-04-05 09:29:43,672 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 09:29:43,672 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 09:29:43,672 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-04-05 09:29:43,672 INFO L403 AbstractCegarLoop]: === Iteration 10 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 09:29:43,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 09:29:43,673 INFO L85 PathProgramCache]: Analyzing trace with hash -747319687, now seen corresponding path program 1 times [2022-04-05 09:29:43,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 09:29:43,673 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431969900] [2022-04-05 09:29:43,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 09:29:43,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 09:29:43,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:29:43,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 09:29:43,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:29:43,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 09:29:43,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:29:43,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-05 09:29:43,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:29:43,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-04-05 09:29:43,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:29:43,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-05 09:29:43,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 09:29:43,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431969900] [2022-04-05 09:29:43,768 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1431969900] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 09:29:43,768 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 09:29:43,768 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-04-05 09:29:43,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605874400] [2022-04-05 09:29:43,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 09:29:43,768 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-04-05 09:29:43,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 09:29:43,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-04-05 09:29:43,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-04-05 09:29:43,769 INFO L87 Difference]: Start difference. First operand 754 states and 1051 transitions. Second operand has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 3 states have internal predecessors, (34), 3 states have call successors, (9), 7 states have call predecessors, (9), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-04-05 09:29:44,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 09:29:44,901 INFO L93 Difference]: Finished difference Result 956 states and 1371 transitions. [2022-04-05 09:29:44,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-04-05 09:29:44,902 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 3 states have internal predecessors, (34), 3 states have call successors, (9), 7 states have call predecessors, (9), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 47 [2022-04-05 09:29:44,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 09:29:44,905 INFO L225 Difference]: With dead ends: 956 [2022-04-05 09:29:44,905 INFO L226 Difference]: Without dead ends: 889 [2022-04-05 09:29:44,905 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=53, Unknown=0, NotChecked=0, Total=90 [2022-04-05 09:29:44,906 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 [2022-04-05 09:29:44,906 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] [2022-04-05 09:29:44,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 889 states. [2022-04-05 09:29:44,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 889 to 743. [2022-04-05 09:29:44,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 743 states, 581 states have (on average 1.395869191049914) internal successors, (811), 593 states have internal predecessors, (811), 105 states have call successors, (105), 46 states have call predecessors, (105), 56 states have return successors, (122), 108 states have call predecessors, (122), 98 states have call successors, (122) [2022-04-05 09:29:44,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 743 states to 743 states and 1038 transitions. [2022-04-05 09:29:44,944 INFO L78 Accepts]: Start accepts. Automaton has 743 states and 1038 transitions. Word has length 47 [2022-04-05 09:29:44,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 09:29:44,944 INFO L478 AbstractCegarLoop]: Abstraction has 743 states and 1038 transitions. [2022-04-05 09:29:44,944 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 3 states have internal predecessors, (34), 3 states have call successors, (9), 7 states have call predecessors, (9), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-04-05 09:29:44,944 INFO L276 IsEmpty]: Start isEmpty. Operand 743 states and 1038 transitions. [2022-04-05 09:29:44,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-04-05 09:29:44,946 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 09:29:44,946 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 09:29:44,946 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-04-05 09:29:44,946 INFO L403 AbstractCegarLoop]: === Iteration 11 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 09:29:44,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 09:29:44,946 INFO L85 PathProgramCache]: Analyzing trace with hash -1537806195, now seen corresponding path program 1 times [2022-04-05 09:29:44,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 09:29:44,946 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885340719] [2022-04-05 09:29:44,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 09:29:44,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 09:29:44,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:29:44,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 09:29:44,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:29:45,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 09:29:45,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:29:45,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-05 09:29:45,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:29:45,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-04-05 09:29:45,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:29:45,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-05 09:29:45,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:29:45,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-05 09:29:45,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 09:29:45,073 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885340719] [2022-04-05 09:29:45,073 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [885340719] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 09:29:45,073 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 09:29:45,073 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-04-05 09:29:45,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400448005] [2022-04-05 09:29:45,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 09:29:45,073 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-04-05 09:29:45,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 09:29:45,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-04-05 09:29:45,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2022-04-05 09:29:45,074 INFO L87 Difference]: Start difference. First operand 743 states and 1038 transitions. Second operand has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 7 states have internal predecessors, (36), 4 states have call successors, (7), 6 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2022-04-05 09:29:47,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 09:29:47,029 INFO L93 Difference]: Finished difference Result 1059 states and 1503 transitions. [2022-04-05 09:29:47,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-04-05 09:29:47,030 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 7 states have internal predecessors, (36), 4 states have call successors, (7), 6 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) Word has length 48 [2022-04-05 09:29:47,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 09:29:47,033 INFO L225 Difference]: With dead ends: 1059 [2022-04-05 09:29:47,033 INFO L226 Difference]: Without dead ends: 998 [2022-04-05 09:29:47,033 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 [2022-04-05 09:29:47,034 INFO L913 BasicCegarLoop]: 751 mSDtfsCounter, 2185 mSDsluCounter, 950 mSDsCounter, 0 mSdLazyCounter, 2265 mSolverCounterSat, 721 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2214 SdHoareTripleChecker+Valid, 1701 SdHoareTripleChecker+Invalid, 2986 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 721 IncrementalHoareTripleChecker+Valid, 2265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-04-05 09:29:47,034 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [2214 Valid, 1701 Invalid, 2986 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [721 Valid, 2265 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-04-05 09:29:47,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 998 states. [2022-04-05 09:29:47,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 998 to 786. [2022-04-05 09:29:47,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 786 states, 616 states have (on average 1.3944805194805194) internal successors, (859), 627 states have internal predecessors, (859), 109 states have call successors, (109), 49 states have call predecessors, (109), 60 states have return successors, (131), 114 states have call predecessors, (131), 102 states have call successors, (131) [2022-04-05 09:29:47,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 786 states to 786 states and 1099 transitions. [2022-04-05 09:29:47,076 INFO L78 Accepts]: Start accepts. Automaton has 786 states and 1099 transitions. Word has length 48 [2022-04-05 09:29:47,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 09:29:47,076 INFO L478 AbstractCegarLoop]: Abstraction has 786 states and 1099 transitions. [2022-04-05 09:29:47,076 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 7 states have internal predecessors, (36), 4 states have call successors, (7), 6 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2022-04-05 09:29:47,077 INFO L276 IsEmpty]: Start isEmpty. Operand 786 states and 1099 transitions. [2022-04-05 09:29:47,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-04-05 09:29:47,078 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 09:29:47,078 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 09:29:47,078 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-04-05 09:29:47,078 INFO L403 AbstractCegarLoop]: === Iteration 12 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 09:29:47,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 09:29:47,078 INFO L85 PathProgramCache]: Analyzing trace with hash 520235537, now seen corresponding path program 1 times [2022-04-05 09:29:47,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 09:29:47,079 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816971955] [2022-04-05 09:29:47,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 09:29:47,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 09:29:47,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:29:47,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 09:29:47,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:29:47,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 09:29:47,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:29:47,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-05 09:29:47,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:29:47,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-04-05 09:29:47,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:29:47,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-05 09:29:47,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:29:47,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-05 09:29:47,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 09:29:47,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816971955] [2022-04-05 09:29:47,214 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1816971955] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 09:29:47,214 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 09:29:47,214 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-04-05 09:29:47,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71292021] [2022-04-05 09:29:47,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 09:29:47,214 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-04-05 09:29:47,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 09:29:47,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-04-05 09:29:47,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-04-05 09:29:47,215 INFO L87 Difference]: Start difference. First operand 786 states and 1099 transitions. Second operand has 10 states, 10 states have (on average 3.8) internal successors, (38), 6 states have internal predecessors, (38), 3 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2022-04-05 09:29:48,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 09:29:48,949 INFO L93 Difference]: Finished difference Result 947 states and 1359 transitions. [2022-04-05 09:29:48,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-04-05 09:29:48,949 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.8) internal successors, (38), 6 states have internal predecessors, (38), 3 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) Word has length 50 [2022-04-05 09:29:48,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 09:29:48,952 INFO L225 Difference]: With dead ends: 947 [2022-04-05 09:29:48,952 INFO L226 Difference]: Without dead ends: 919 [2022-04-05 09:29:48,953 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=95, Invalid=211, Unknown=0, NotChecked=0, Total=306 [2022-04-05 09:29:48,954 INFO L913 BasicCegarLoop]: 649 mSDtfsCounter, 1533 mSDsluCounter, 795 mSDsCounter, 0 mSdLazyCounter, 1776 mSolverCounterSat, 390 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1544 SdHoareTripleChecker+Valid, 1444 SdHoareTripleChecker+Invalid, 2166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 390 IncrementalHoareTripleChecker+Valid, 1776 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-04-05 09:29:48,954 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1544 Valid, 1444 Invalid, 2166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [390 Valid, 1776 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-04-05 09:29:48,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 919 states. [2022-04-05 09:29:49,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 919 to 789. [2022-04-05 09:29:49,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 789 states, 619 states have (on average 1.394184168012924) internal successors, (863), 630 states have internal predecessors, (863), 109 states have call successors, (109), 49 states have call predecessors, (109), 60 states have return successors, (131), 114 states have call predecessors, (131), 102 states have call successors, (131) [2022-04-05 09:29:49,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 789 states to 789 states and 1103 transitions. [2022-04-05 09:29:49,009 INFO L78 Accepts]: Start accepts. Automaton has 789 states and 1103 transitions. Word has length 50 [2022-04-05 09:29:49,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 09:29:49,010 INFO L478 AbstractCegarLoop]: Abstraction has 789 states and 1103 transitions. [2022-04-05 09:29:49,010 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.8) internal successors, (38), 6 states have internal predecessors, (38), 3 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2022-04-05 09:29:49,010 INFO L276 IsEmpty]: Start isEmpty. Operand 789 states and 1103 transitions. [2022-04-05 09:29:49,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-04-05 09:29:49,011 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 09:29:49,011 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 09:29:49,011 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-04-05 09:29:49,012 INFO L403 AbstractCegarLoop]: === Iteration 13 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 09:29:49,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 09:29:49,012 INFO L85 PathProgramCache]: Analyzing trace with hash -476836816, now seen corresponding path program 1 times [2022-04-05 09:29:49,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 09:29:49,012 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628987899] [2022-04-05 09:29:49,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 09:29:49,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 09:29:49,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:29:49,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 09:29:49,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:29:49,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 09:29:49,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:29:49,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-05 09:29:49,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:29:49,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-04-05 09:29:49,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:29:49,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-05 09:29:49,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:29:49,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-05 09:29:49,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 09:29:49,184 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628987899] [2022-04-05 09:29:49,185 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [628987899] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 09:29:49,185 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 09:29:49,185 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-04-05 09:29:49,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714623729] [2022-04-05 09:29:49,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 09:29:49,185 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-04-05 09:29:49,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 09:29:49,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-04-05 09:29:49,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2022-04-05 09:29:49,186 INFO L87 Difference]: Start difference. First operand 789 states and 1103 transitions. Second operand has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 8 states have internal predecessors, (38), 4 states have call successors, (7), 6 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2022-04-05 09:29:51,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 09:29:51,351 INFO L93 Difference]: Finished difference Result 970 states and 1390 transitions. [2022-04-05 09:29:51,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-04-05 09:29:51,351 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 8 states have internal predecessors, (38), 4 states have call successors, (7), 6 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) Word has length 50 [2022-04-05 09:29:51,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 09:29:51,354 INFO L225 Difference]: With dead ends: 970 [2022-04-05 09:29:51,354 INFO L226 Difference]: Without dead ends: 906 [2022-04-05 09:29:51,354 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2022-04-05 09:29:51,354 INFO L913 BasicCegarLoop]: 649 mSDtfsCounter, 1874 mSDsluCounter, 871 mSDsCounter, 0 mSdLazyCounter, 2855 mSolverCounterSat, 529 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1883 SdHoareTripleChecker+Valid, 1520 SdHoareTripleChecker+Invalid, 3384 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 529 IncrementalHoareTripleChecker+Valid, 2855 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-04-05 09:29:51,355 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1883 Valid, 1520 Invalid, 3384 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [529 Valid, 2855 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-04-05 09:29:51,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 906 states. [2022-04-05 09:29:51,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 906 to 784. [2022-04-05 09:29:51,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 784 states, 614 states have (on average 1.3892508143322475) internal successors, (853), 625 states have internal predecessors, (853), 109 states have call successors, (109), 49 states have call predecessors, (109), 60 states have return successors, (131), 114 states have call predecessors, (131), 102 states have call successors, (131) [2022-04-05 09:29:51,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 784 states to 784 states and 1093 transitions. [2022-04-05 09:29:51,399 INFO L78 Accepts]: Start accepts. Automaton has 784 states and 1093 transitions. Word has length 50 [2022-04-05 09:29:51,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 09:29:51,399 INFO L478 AbstractCegarLoop]: Abstraction has 784 states and 1093 transitions. [2022-04-05 09:29:51,399 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 8 states have internal predecessors, (38), 4 states have call successors, (7), 6 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2022-04-05 09:29:51,399 INFO L276 IsEmpty]: Start isEmpty. Operand 784 states and 1093 transitions. [2022-04-05 09:29:51,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-04-05 09:29:51,401 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 09:29:51,401 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 09:29:51,401 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-04-05 09:29:51,401 INFO L403 AbstractCegarLoop]: === Iteration 14 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 09:29:51,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 09:29:51,401 INFO L85 PathProgramCache]: Analyzing trace with hash 1976586256, now seen corresponding path program 1 times [2022-04-05 09:29:51,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 09:29:51,401 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066278722] [2022-04-05 09:29:51,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 09:29:51,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 09:29:51,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:29:51,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 09:29:51,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:29:51,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 09:29:51,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:29:51,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-05 09:29:51,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:29:51,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-04-05 09:29:51,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:29:51,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-05 09:29:51,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:29:51,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-05 09:29:51,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 09:29:51,504 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066278722] [2022-04-05 09:29:51,504 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2066278722] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 09:29:51,504 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 09:29:51,504 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-04-05 09:29:51,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255618923] [2022-04-05 09:29:51,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 09:29:51,505 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-04-05 09:29:51,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 09:29:51,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-04-05 09:29:51,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-04-05 09:29:51,505 INFO L87 Difference]: Start difference. First operand 784 states and 1093 transitions. Second operand has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (7), 6 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2022-04-05 09:29:53,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 09:29:53,214 INFO L93 Difference]: Finished difference Result 1071 states and 1527 transitions. [2022-04-05 09:29:53,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-04-05 09:29:53,214 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (7), 6 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) Word has length 50 [2022-04-05 09:29:53,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 09:29:53,218 INFO L225 Difference]: With dead ends: 1071 [2022-04-05 09:29:53,219 INFO L226 Difference]: Without dead ends: 1060 [2022-04-05 09:29:53,219 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-04-05 09:29:53,219 INFO L913 BasicCegarLoop]: 780 mSDtfsCounter, 520 mSDsluCounter, 544 mSDsCounter, 0 mSdLazyCounter, 1803 mSolverCounterSat, 155 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 523 SdHoareTripleChecker+Valid, 1324 SdHoareTripleChecker+Invalid, 1958 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 155 IncrementalHoareTripleChecker+Valid, 1803 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-04-05 09:29:53,220 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [523 Valid, 1324 Invalid, 1958 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [155 Valid, 1803 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-04-05 09:29:53,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1060 states. [2022-04-05 09:29:53,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1060 to 837. [2022-04-05 09:29:53,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 837 states, 653 states have (on average 1.3721286370597243) internal successors, (896), 666 states have internal predecessors, (896), 111 states have call successors, (111), 51 states have call predecessors, (111), 72 states have return successors, (143), 126 states have call predecessors, (143), 104 states have call successors, (143) [2022-04-05 09:29:53,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 837 states to 837 states and 1150 transitions. [2022-04-05 09:29:53,273 INFO L78 Accepts]: Start accepts. Automaton has 837 states and 1150 transitions. Word has length 50 [2022-04-05 09:29:53,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 09:29:53,273 INFO L478 AbstractCegarLoop]: Abstraction has 837 states and 1150 transitions. [2022-04-05 09:29:53,273 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (7), 6 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2022-04-05 09:29:53,273 INFO L276 IsEmpty]: Start isEmpty. Operand 837 states and 1150 transitions. [2022-04-05 09:29:53,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-04-05 09:29:53,274 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 09:29:53,275 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] [2022-04-05 09:29:53,275 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-04-05 09:29:53,275 INFO L403 AbstractCegarLoop]: === Iteration 15 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 09:29:53,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 09:29:53,275 INFO L85 PathProgramCache]: Analyzing trace with hash 2001757018, now seen corresponding path program 1 times [2022-04-05 09:29:53,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 09:29:53,275 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336203482] [2022-04-05 09:29:53,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 09:29:53,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 09:29:53,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:29:53,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 09:29:53,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:29:53,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 09:29:53,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:29:53,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-05 09:29:53,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:29:53,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-05 09:29:53,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:29:53,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-05 09:29:53,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:29:53,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 09:29:53,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:29:53,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-05 09:29:53,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 09:29:53,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336203482] [2022-04-05 09:29:53,403 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [336203482] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 09:29:53,403 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 09:29:53,403 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-04-05 09:29:53,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12626921] [2022-04-05 09:29:53,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 09:29:53,404 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-04-05 09:29:53,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 09:29:53,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-04-05 09:29:53,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2022-04-05 09:29:53,404 INFO L87 Difference]: Start difference. First operand 837 states and 1150 transitions. Second operand has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (8), 8 states have call predecessors, (8), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2022-04-05 09:29:54,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 09:29:54,972 INFO L93 Difference]: Finished difference Result 982 states and 1391 transitions. [2022-04-05 09:29:54,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-04-05 09:29:54,972 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (8), 8 states have call predecessors, (8), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) Word has length 52 [2022-04-05 09:29:54,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 09:29:54,975 INFO L225 Difference]: With dead ends: 982 [2022-04-05 09:29:54,976 INFO L226 Difference]: Without dead ends: 977 [2022-04-05 09:29:54,976 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2022-04-05 09:29:54,976 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, 1.4s IncrementalHoareTripleChecker+Time [2022-04-05 09:29:54,976 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [826 Valid, 1378 Invalid, 1748 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [284 Valid, 1464 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-04-05 09:29:54,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 977 states. [2022-04-05 09:29:55,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 977 to 855. [2022-04-05 09:29:55,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 855 states, 668 states have (on average 1.3682634730538923) internal successors, (914), 682 states have internal predecessors, (914), 112 states have call successors, (112), 52 states have call predecessors, (112), 74 states have return successors, (145), 128 states have call predecessors, (145), 105 states have call successors, (145) [2022-04-05 09:29:55,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 855 states to 855 states and 1171 transitions. [2022-04-05 09:29:55,061 INFO L78 Accepts]: Start accepts. Automaton has 855 states and 1171 transitions. Word has length 52 [2022-04-05 09:29:55,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 09:29:55,061 INFO L478 AbstractCegarLoop]: Abstraction has 855 states and 1171 transitions. [2022-04-05 09:29:55,062 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (8), 8 states have call predecessors, (8), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2022-04-05 09:29:55,062 INFO L276 IsEmpty]: Start isEmpty. Operand 855 states and 1171 transitions. [2022-04-05 09:29:55,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-04-05 09:29:55,063 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 09:29:55,063 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 09:29:55,063 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-04-05 09:29:55,063 INFO L403 AbstractCegarLoop]: === Iteration 16 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 09:29:55,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 09:29:55,064 INFO L85 PathProgramCache]: Analyzing trace with hash 2085636174, now seen corresponding path program 1 times [2022-04-05 09:29:55,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 09:29:55,064 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215929740] [2022-04-05 09:29:55,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 09:29:55,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 09:29:55,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:29:55,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 09:29:55,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:29:55,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 09:29:55,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:29:55,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-05 09:29:55,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:29:55,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-04-05 09:29:55,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:29:55,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-04-05 09:29:55,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:29:55,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-05 09:29:55,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 09:29:55,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215929740] [2022-04-05 09:29:55,185 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1215929740] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 09:29:55,185 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 09:29:55,185 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-04-05 09:29:55,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613062902] [2022-04-05 09:29:55,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 09:29:55,186 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-04-05 09:29:55,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 09:29:55,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-04-05 09:29:55,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-04-05 09:29:55,186 INFO L87 Difference]: Start difference. First operand 855 states and 1171 transitions. Second operand has 8 states, 8 states have (on average 4.875) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (10), 7 states have call predecessors, (10), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2022-04-05 09:29:56,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 09:29:56,573 INFO L93 Difference]: Finished difference Result 1188 states and 1671 transitions. [2022-04-05 09:29:56,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-04-05 09:29:56,573 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (10), 7 states have call predecessors, (10), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) Word has length 54 [2022-04-05 09:29:56,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 09:29:56,576 INFO L225 Difference]: With dead ends: 1188 [2022-04-05 09:29:56,576 INFO L226 Difference]: Without dead ends: 947 [2022-04-05 09:29:56,577 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=67, Unknown=0, NotChecked=0, Total=110 [2022-04-05 09:29:56,577 INFO L913 BasicCegarLoop]: 638 mSDtfsCounter, 1398 mSDsluCounter, 526 mSDsCounter, 0 mSdLazyCounter, 1350 mSolverCounterSat, 497 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1431 SdHoareTripleChecker+Valid, 1164 SdHoareTripleChecker+Invalid, 1847 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 497 IncrementalHoareTripleChecker+Valid, 1350 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-04-05 09:29:56,578 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1431 Valid, 1164 Invalid, 1847 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [497 Valid, 1350 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-04-05 09:29:56,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 947 states. [2022-04-05 09:29:56,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 947 to 827. [2022-04-05 09:29:56,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 827 states, 647 states have (on average 1.3663060278207109) internal successors, (884), 659 states have internal predecessors, (884), 110 states have call successors, (110), 51 states have call predecessors, (110), 69 states have return successors, (140), 123 states have call predecessors, (140), 104 states have call successors, (140) [2022-04-05 09:29:56,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 827 states to 827 states and 1134 transitions. [2022-04-05 09:29:56,628 INFO L78 Accepts]: Start accepts. Automaton has 827 states and 1134 transitions. Word has length 54 [2022-04-05 09:29:56,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 09:29:56,628 INFO L478 AbstractCegarLoop]: Abstraction has 827 states and 1134 transitions. [2022-04-05 09:29:56,628 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (10), 7 states have call predecessors, (10), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2022-04-05 09:29:56,628 INFO L276 IsEmpty]: Start isEmpty. Operand 827 states and 1134 transitions. [2022-04-05 09:29:56,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-04-05 09:29:56,630 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 09:29:56,630 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 09:29:56,630 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-04-05 09:29:56,630 INFO L403 AbstractCegarLoop]: === Iteration 17 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 09:29:56,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 09:29:56,630 INFO L85 PathProgramCache]: Analyzing trace with hash 1175170233, now seen corresponding path program 1 times [2022-04-05 09:29:56,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 09:29:56,630 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228697045] [2022-04-05 09:29:56,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 09:29:56,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 09:29:56,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:29:56,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 09:29:56,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:29:56,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 09:29:56,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:29:56,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-05 09:29:56,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:29:56,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-04-05 09:29:56,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:29:56,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-05 09:29:56,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:29:56,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-05 09:29:56,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 09:29:56,778 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228697045] [2022-04-05 09:29:56,778 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [228697045] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 09:29:56,779 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 09:29:56,779 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-04-05 09:29:56,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811816927] [2022-04-05 09:29:56,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 09:29:56,779 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-04-05 09:29:56,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 09:29:56,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-04-05 09:29:56,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2022-04-05 09:29:56,780 INFO L87 Difference]: Start difference. First operand 827 states and 1134 transitions. Second operand has 12 states, 12 states have (on average 3.25) internal successors, (39), 6 states have internal predecessors, (39), 2 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2022-04-05 09:29:58,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 09:29:58,650 INFO L93 Difference]: Finished difference Result 972 states and 1374 transitions. [2022-04-05 09:29:58,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-04-05 09:29:58,650 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.25) internal successors, (39), 6 states have internal predecessors, (39), 2 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) Word has length 51 [2022-04-05 09:29:58,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 09:29:58,653 INFO L225 Difference]: With dead ends: 972 [2022-04-05 09:29:58,653 INFO L226 Difference]: Without dead ends: 968 [2022-04-05 09:29:58,654 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2022-04-05 09:29:58,654 INFO L913 BasicCegarLoop]: 704 mSDtfsCounter, 739 mSDsluCounter, 1724 mSDsCounter, 0 mSdLazyCounter, 3847 mSolverCounterSat, 276 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 741 SdHoareTripleChecker+Valid, 2428 SdHoareTripleChecker+Invalid, 4123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 276 IncrementalHoareTripleChecker+Valid, 3847 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-04-05 09:29:58,654 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [741 Valid, 2428 Invalid, 4123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [276 Valid, 3847 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-04-05 09:29:58,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 968 states. [2022-04-05 09:29:58,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 968 to 846. [2022-04-05 09:29:58,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 846 states, 663 states have (on average 1.358974358974359) internal successors, (901), 676 states have internal predecessors, (901), 111 states have call successors, (111), 51 states have call predecessors, (111), 71 states have return successors, (143), 126 states have call predecessors, (143), 105 states have call successors, (143) [2022-04-05 09:29:58,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 846 states to 846 states and 1155 transitions. [2022-04-05 09:29:58,711 INFO L78 Accepts]: Start accepts. Automaton has 846 states and 1155 transitions. Word has length 51 [2022-04-05 09:29:58,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 09:29:58,712 INFO L478 AbstractCegarLoop]: Abstraction has 846 states and 1155 transitions. [2022-04-05 09:29:58,712 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.25) internal successors, (39), 6 states have internal predecessors, (39), 2 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2022-04-05 09:29:58,712 INFO L276 IsEmpty]: Start isEmpty. Operand 846 states and 1155 transitions. [2022-04-05 09:29:58,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-04-05 09:29:58,713 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 09:29:58,713 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 09:29:58,713 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-04-05 09:29:58,714 INFO L403 AbstractCegarLoop]: === Iteration 18 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 09:29:58,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 09:29:58,714 INFO L85 PathProgramCache]: Analyzing trace with hash 1175201977, now seen corresponding path program 1 times [2022-04-05 09:29:58,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 09:29:58,714 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467590760] [2022-04-05 09:29:58,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 09:29:58,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 09:29:58,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:29:58,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 09:29:58,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:29:58,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 09:29:58,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:29:58,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-05 09:29:58,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:29:58,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-04-05 09:29:58,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:29:58,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-05 09:29:58,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:29:58,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-05 09:29:58,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 09:29:58,857 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467590760] [2022-04-05 09:29:58,857 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [467590760] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 09:29:58,857 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 09:29:58,857 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-04-05 09:29:58,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191048019] [2022-04-05 09:29:58,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 09:29:58,857 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-04-05 09:29:58,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 09:29:58,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-04-05 09:29:58,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2022-04-05 09:29:58,858 INFO L87 Difference]: Start difference. First operand 846 states and 1155 transitions. Second operand has 12 states, 12 states have (on average 3.25) internal successors, (39), 6 states have internal predecessors, (39), 2 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2022-04-05 09:30:00,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 09:30:00,583 INFO L93 Difference]: Finished difference Result 981 states and 1385 transitions. [2022-04-05 09:30:00,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-04-05 09:30:00,585 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.25) internal successors, (39), 6 states have internal predecessors, (39), 2 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) Word has length 51 [2022-04-05 09:30:00,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 09:30:00,588 INFO L225 Difference]: With dead ends: 981 [2022-04-05 09:30:00,588 INFO L226 Difference]: Without dead ends: 957 [2022-04-05 09:30:00,589 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2022-04-05 09:30:00,589 INFO L913 BasicCegarLoop]: 703 mSDtfsCounter, 1084 mSDsluCounter, 1634 mSDsCounter, 0 mSdLazyCounter, 3506 mSolverCounterSat, 411 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1086 SdHoareTripleChecker+Valid, 2337 SdHoareTripleChecker+Invalid, 3917 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 411 IncrementalHoareTripleChecker+Valid, 3506 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-04-05 09:30:00,589 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1086 Valid, 2337 Invalid, 3917 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [411 Valid, 3506 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-04-05 09:30:00,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 957 states. [2022-04-05 09:30:00,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 957 to 833. [2022-04-05 09:30:00,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 833 states, 652 states have (on average 1.3634969325153374) internal successors, (889), 665 states have internal predecessors, (889), 111 states have call successors, (111), 51 states have call predecessors, (111), 69 states have return successors, (141), 124 states have call predecessors, (141), 105 states have call successors, (141) [2022-04-05 09:30:00,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 833 states to 833 states and 1141 transitions. [2022-04-05 09:30:00,648 INFO L78 Accepts]: Start accepts. Automaton has 833 states and 1141 transitions. Word has length 51 [2022-04-05 09:30:00,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 09:30:00,648 INFO L478 AbstractCegarLoop]: Abstraction has 833 states and 1141 transitions. [2022-04-05 09:30:00,648 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.25) internal successors, (39), 6 states have internal predecessors, (39), 2 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2022-04-05 09:30:00,648 INFO L276 IsEmpty]: Start isEmpty. Operand 833 states and 1141 transitions. [2022-04-05 09:30:00,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-04-05 09:30:00,649 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 09:30:00,650 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 09:30:00,650 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-04-05 09:30:00,650 INFO L403 AbstractCegarLoop]: === Iteration 19 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 09:30:00,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 09:30:00,650 INFO L85 PathProgramCache]: Analyzing trace with hash 1955463855, now seen corresponding path program 1 times [2022-04-05 09:30:00,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 09:30:00,650 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418618487] [2022-04-05 09:30:00,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 09:30:00,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 09:30:00,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:00,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 09:30:00,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:00,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 09:30:00,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:00,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-05 09:30:00,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:00,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-05 09:30:00,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:00,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-05 09:30:00,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:00,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 09:30:00,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:00,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-05 09:30:00,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 09:30:00,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418618487] [2022-04-05 09:30:00,883 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [418618487] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 09:30:00,883 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 09:30:00,883 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-04-05 09:30:00,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419531750] [2022-04-05 09:30:00,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 09:30:00,884 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-04-05 09:30:00,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 09:30:00,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-04-05 09:30:00,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2022-04-05 09:30:00,885 INFO L87 Difference]: Start difference. First operand 833 states and 1141 transitions. Second operand has 13 states, 13 states have (on average 3.0) internal successors, (39), 7 states have internal predecessors, (39), 3 states have call successors, (8), 8 states have call predecessors, (8), 4 states have return successors, (6), 5 states have call predecessors, (6), 2 states have call successors, (6) [2022-04-05 09:30:02,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 09:30:02,635 INFO L93 Difference]: Finished difference Result 963 states and 1362 transitions. [2022-04-05 09:30:02,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-04-05 09:30:02,635 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 7 states have internal predecessors, (39), 3 states have call successors, (8), 8 states have call predecessors, (8), 4 states have return successors, (6), 5 states have call predecessors, (6), 2 states have call successors, (6) Word has length 53 [2022-04-05 09:30:02,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 09:30:02,638 INFO L225 Difference]: With dead ends: 963 [2022-04-05 09:30:02,638 INFO L226 Difference]: Without dead ends: 957 [2022-04-05 09:30:02,639 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=106, Invalid=274, Unknown=0, NotChecked=0, Total=380 [2022-04-05 09:30:02,639 INFO L913 BasicCegarLoop]: 653 mSDtfsCounter, 1943 mSDsluCounter, 941 mSDsCounter, 0 mSdLazyCounter, 2618 mSolverCounterSat, 647 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s 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, 1.5s IncrementalHoareTripleChecker+Time [2022-04-05 09:30:02,639 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1969 Valid, 1594 Invalid, 3265 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [647 Valid, 2618 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-04-05 09:30:02,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 957 states. [2022-04-05 09:30:02,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 957 to 833. [2022-04-05 09:30:02,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 833 states, 652 states have (on average 1.361963190184049) internal successors, (888), 665 states have internal predecessors, (888), 111 states have call successors, (111), 51 states have call predecessors, (111), 69 states have return successors, (141), 124 states have call predecessors, (141), 105 states have call successors, (141) [2022-04-05 09:30:02,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 833 states to 833 states and 1140 transitions. [2022-04-05 09:30:02,700 INFO L78 Accepts]: Start accepts. Automaton has 833 states and 1140 transitions. Word has length 53 [2022-04-05 09:30:02,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 09:30:02,700 INFO L478 AbstractCegarLoop]: Abstraction has 833 states and 1140 transitions. [2022-04-05 09:30:02,700 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 7 states have internal predecessors, (39), 3 states have call successors, (8), 8 states have call predecessors, (8), 4 states have return successors, (6), 5 states have call predecessors, (6), 2 states have call successors, (6) [2022-04-05 09:30:02,700 INFO L276 IsEmpty]: Start isEmpty. Operand 833 states and 1140 transitions. [2022-04-05 09:30:02,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-04-05 09:30:02,703 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 09:30:02,703 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 09:30:02,703 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-04-05 09:30:02,703 INFO L403 AbstractCegarLoop]: === Iteration 20 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 09:30:02,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 09:30:02,704 INFO L85 PathProgramCache]: Analyzing trace with hash -1151246814, now seen corresponding path program 1 times [2022-04-05 09:30:02,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 09:30:02,704 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086997422] [2022-04-05 09:30:02,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 09:30:02,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 09:30:02,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:02,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 09:30:02,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:02,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 09:30:02,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:02,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-05 09:30:02,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:02,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-04-05 09:30:02,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:02,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-05 09:30:02,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:02,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-05 09:30:02,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 09:30:02,833 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086997422] [2022-04-05 09:30:02,834 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1086997422] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 09:30:02,834 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 09:30:02,834 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-04-05 09:30:02,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8881303] [2022-04-05 09:30:02,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 09:30:02,834 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-04-05 09:30:02,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 09:30:02,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-04-05 09:30:02,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-04-05 09:30:02,835 INFO L87 Difference]: Start difference. First operand 833 states and 1140 transitions. Second operand has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 5 states have internal predecessors, (40), 3 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2022-04-05 09:30:04,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 09:30:04,349 INFO L93 Difference]: Finished difference Result 967 states and 1365 transitions. [2022-04-05 09:30:04,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-04-05 09:30:04,350 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 5 states have internal predecessors, (40), 3 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) Word has length 52 [2022-04-05 09:30:04,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 09:30:04,353 INFO L225 Difference]: With dead ends: 967 [2022-04-05 09:30:04,353 INFO L226 Difference]: Without dead ends: 931 [2022-04-05 09:30:04,353 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=86, Invalid=186, Unknown=0, NotChecked=0, Total=272 [2022-04-05 09:30:04,353 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 [2022-04-05 09:30:04,354 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1935 Valid, 1257 Invalid, 2049 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [583 Valid, 1466 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-04-05 09:30:04,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 931 states. [2022-04-05 09:30:04,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 931 to 805. [2022-04-05 09:30:04,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 805 states, 629 states have (on average 1.370429252782194) internal successors, (862), 641 states have internal predecessors, (862), 108 states have call successors, (108), 49 states have call predecessors, (108), 67 states have return successors, (138), 121 states have call predecessors, (138), 102 states have call successors, (138) [2022-04-05 09:30:04,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 805 states to 805 states and 1108 transitions. [2022-04-05 09:30:04,407 INFO L78 Accepts]: Start accepts. Automaton has 805 states and 1108 transitions. Word has length 52 [2022-04-05 09:30:04,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 09:30:04,407 INFO L478 AbstractCegarLoop]: Abstraction has 805 states and 1108 transitions. [2022-04-05 09:30:04,408 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 5 states have internal predecessors, (40), 3 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2022-04-05 09:30:04,408 INFO L276 IsEmpty]: Start isEmpty. Operand 805 states and 1108 transitions. [2022-04-05 09:30:04,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-04-05 09:30:04,409 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 09:30:04,409 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] [2022-04-05 09:30:04,409 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-04-05 09:30:04,409 INFO L403 AbstractCegarLoop]: === Iteration 21 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 09:30:04,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 09:30:04,410 INFO L85 PathProgramCache]: Analyzing trace with hash -437720056, now seen corresponding path program 1 times [2022-04-05 09:30:04,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 09:30:04,410 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256908210] [2022-04-05 09:30:04,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 09:30:04,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 09:30:04,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:04,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 09:30:04,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:04,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 09:30:04,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:04,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-05 09:30:04,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:04,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-05 09:30:04,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:04,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-05 09:30:04,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:04,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 09:30:04,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:04,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-05 09:30:04,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 09:30:04,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256908210] [2022-04-05 09:30:04,605 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1256908210] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 09:30:04,605 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 09:30:04,605 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-04-05 09:30:04,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412629092] [2022-04-05 09:30:04,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 09:30:04,606 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-04-05 09:30:04,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 09:30:04,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-04-05 09:30:04,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2022-04-05 09:30:04,607 INFO L87 Difference]: Start difference. First operand 805 states and 1108 transitions. Second operand has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 7 states have internal predecessors, (40), 3 states have call successors, (8), 8 states have call predecessors, (8), 4 states have return successors, (6), 5 states have call predecessors, (6), 2 states have call successors, (6) [2022-04-05 09:30:06,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 09:30:06,079 INFO L93 Difference]: Finished difference Result 933 states and 1327 transitions. [2022-04-05 09:30:06,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-04-05 09:30:06,080 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 7 states have internal predecessors, (40), 3 states have call successors, (8), 8 states have call predecessors, (8), 4 states have return successors, (6), 5 states have call predecessors, (6), 2 states have call successors, (6) Word has length 54 [2022-04-05 09:30:06,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 09:30:06,082 INFO L225 Difference]: With dead ends: 933 [2022-04-05 09:30:06,082 INFO L226 Difference]: Without dead ends: 927 [2022-04-05 09:30:06,083 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=106, Invalid=274, Unknown=0, NotChecked=0, Total=380 [2022-04-05 09:30:06,083 INFO L913 BasicCegarLoop]: 624 mSDtfsCounter, 2275 mSDsluCounter, 621 mSDsCounter, 0 mSdLazyCounter, 1474 mSolverCounterSat, 828 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s 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, 1.2s IncrementalHoareTripleChecker+Time [2022-04-05 09:30:06,083 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [2301 Valid, 1245 Invalid, 2302 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [828 Valid, 1474 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-04-05 09:30:06,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 927 states. [2022-04-05 09:30:06,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 927 to 805. [2022-04-05 09:30:06,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 805 states, 629 states have (on average 1.368839427662957) internal successors, (861), 641 states have internal predecessors, (861), 108 states have call successors, (108), 49 states have call predecessors, (108), 67 states have return successors, (138), 121 states have call predecessors, (138), 102 states have call successors, (138) [2022-04-05 09:30:06,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 805 states to 805 states and 1107 transitions. [2022-04-05 09:30:06,143 INFO L78 Accepts]: Start accepts. Automaton has 805 states and 1107 transitions. Word has length 54 [2022-04-05 09:30:06,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 09:30:06,143 INFO L478 AbstractCegarLoop]: Abstraction has 805 states and 1107 transitions. [2022-04-05 09:30:06,144 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 7 states have internal predecessors, (40), 3 states have call successors, (8), 8 states have call predecessors, (8), 4 states have return successors, (6), 5 states have call predecessors, (6), 2 states have call successors, (6) [2022-04-05 09:30:06,144 INFO L276 IsEmpty]: Start isEmpty. Operand 805 states and 1107 transitions. [2022-04-05 09:30:06,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-04-05 09:30:06,146 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 09:30:06,146 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 09:30:06,146 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-04-05 09:30:06,146 INFO L403 AbstractCegarLoop]: === Iteration 22 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 09:30:06,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 09:30:06,146 INFO L85 PathProgramCache]: Analyzing trace with hash -1268427453, now seen corresponding path program 1 times [2022-04-05 09:30:06,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 09:30:06,146 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422125403] [2022-04-05 09:30:06,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 09:30:06,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 09:30:06,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:06,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 09:30:06,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:06,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 09:30:06,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:06,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-05 09:30:06,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:06,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-05 09:30:06,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:06,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-05 09:30:06,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:06,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 09:30:06,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:06,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-05 09:30:06,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 09:30:06,347 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422125403] [2022-04-05 09:30:06,347 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [422125403] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 09:30:06,347 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 09:30:06,347 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-04-05 09:30:06,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398011838] [2022-04-05 09:30:06,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 09:30:06,348 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-04-05 09:30:06,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 09:30:06,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-04-05 09:30:06,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2022-04-05 09:30:06,348 INFO L87 Difference]: Start difference. First operand 805 states and 1107 transitions. Second operand has 15 states, 15 states have (on average 2.7333333333333334) internal successors, (41), 7 states have internal predecessors, (41), 3 states have call successors, (8), 8 states have call predecessors, (8), 3 states have return successors, (6), 4 states have call predecessors, (6), 2 states have call successors, (6) [2022-04-05 09:30:08,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 09:30:08,787 INFO L93 Difference]: Finished difference Result 956 states and 1356 transitions. [2022-04-05 09:30:08,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-04-05 09:30:08,787 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.7333333333333334) internal successors, (41), 7 states have internal predecessors, (41), 3 states have call successors, (8), 8 states have call predecessors, (8), 3 states have return successors, (6), 4 states have call predecessors, (6), 2 states have call successors, (6) Word has length 55 [2022-04-05 09:30:08,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 09:30:08,790 INFO L225 Difference]: With dead ends: 956 [2022-04-05 09:30:08,790 INFO L226 Difference]: Without dead ends: 916 [2022-04-05 09:30:08,790 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=280, Unknown=0, NotChecked=0, Total=342 [2022-04-05 09:30:08,791 INFO L913 BasicCegarLoop]: 675 mSDtfsCounter, 415 mSDsluCounter, 2009 mSDsCounter, 0 mSdLazyCounter, 4991 mSolverCounterSat, 169 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 418 SdHoareTripleChecker+Valid, 2684 SdHoareTripleChecker+Invalid, 5160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 169 IncrementalHoareTripleChecker+Valid, 4991 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-04-05 09:30:08,791 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [418 Valid, 2684 Invalid, 5160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [169 Valid, 4991 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-04-05 09:30:08,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 916 states. [2022-04-05 09:30:08,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 916 to 796. [2022-04-05 09:30:08,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 796 states, 622 states have (on average 1.3520900321543408) internal successors, (841), 634 states have internal predecessors, (841), 106 states have call successors, (106), 49 states have call predecessors, (106), 67 states have return successors, (136), 119 states have call predecessors, (136), 100 states have call successors, (136) [2022-04-05 09:30:08,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 796 states to 796 states and 1083 transitions. [2022-04-05 09:30:08,862 INFO L78 Accepts]: Start accepts. Automaton has 796 states and 1083 transitions. Word has length 55 [2022-04-05 09:30:08,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 09:30:08,862 INFO L478 AbstractCegarLoop]: Abstraction has 796 states and 1083 transitions. [2022-04-05 09:30:08,862 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.7333333333333334) internal successors, (41), 7 states have internal predecessors, (41), 3 states have call successors, (8), 8 states have call predecessors, (8), 3 states have return successors, (6), 4 states have call predecessors, (6), 2 states have call successors, (6) [2022-04-05 09:30:08,862 INFO L276 IsEmpty]: Start isEmpty. Operand 796 states and 1083 transitions. [2022-04-05 09:30:08,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-04-05 09:30:08,864 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 09:30:08,864 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 09:30:08,864 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-04-05 09:30:08,864 INFO L403 AbstractCegarLoop]: === Iteration 23 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 09:30:08,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 09:30:08,864 INFO L85 PathProgramCache]: Analyzing trace with hash -406359554, now seen corresponding path program 1 times [2022-04-05 09:30:08,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 09:30:08,865 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008109478] [2022-04-05 09:30:08,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 09:30:08,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 09:30:08,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:08,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 09:30:08,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:08,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 09:30:08,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:08,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-05 09:30:08,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:08,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-04-05 09:30:08,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:09,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-05 09:30:09,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:09,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-05 09:30:09,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:09,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-05 09:30:09,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 09:30:09,083 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008109478] [2022-04-05 09:30:09,084 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1008109478] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 09:30:09,084 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 09:30:09,084 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-04-05 09:30:09,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203707127] [2022-04-05 09:30:09,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 09:30:09,084 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-04-05 09:30:09,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 09:30:09,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-04-05 09:30:09,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2022-04-05 09:30:09,085 INFO L87 Difference]: Start difference. First operand 796 states and 1083 transitions. Second operand has 15 states, 15 states have (on average 2.7333333333333334) internal successors, (41), 7 states have internal predecessors, (41), 2 states have call successors, (8), 7 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 1 states have call successors, (6) [2022-04-05 09:30:10,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 09:30:10,990 INFO L93 Difference]: Finished difference Result 932 states and 1310 transitions. [2022-04-05 09:30:10,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-04-05 09:30:10,990 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.7333333333333334) internal successors, (41), 7 states have internal predecessors, (41), 2 states have call successors, (8), 7 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 1 states have call successors, (6) Word has length 55 [2022-04-05 09:30:10,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 09:30:10,993 INFO L225 Difference]: With dead ends: 932 [2022-04-05 09:30:10,993 INFO L226 Difference]: Without dead ends: 914 [2022-04-05 09:30:10,993 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 [2022-04-05 09:30:10,996 INFO L913 BasicCegarLoop]: 670 mSDtfsCounter, 1311 mSDsluCounter, 2030 mSDsCounter, 0 mSdLazyCounter, 4325 mSolverCounterSat, 528 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1313 SdHoareTripleChecker+Valid, 2700 SdHoareTripleChecker+Invalid, 4853 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 528 IncrementalHoareTripleChecker+Valid, 4325 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-04-05 09:30:10,997 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1313 Valid, 2700 Invalid, 4853 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [528 Valid, 4325 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-04-05 09:30:10,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 914 states. [2022-04-05 09:30:11,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 914 to 794. [2022-04-05 09:30:11,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 794 states, 621 states have (on average 1.3510466988727858) internal successors, (839), 633 states have internal predecessors, (839), 105 states have call successors, (105), 49 states have call predecessors, (105), 67 states have return successors, (135), 118 states have call predecessors, (135), 99 states have call successors, (135) [2022-04-05 09:30:11,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 794 states to 794 states and 1079 transitions. [2022-04-05 09:30:11,054 INFO L78 Accepts]: Start accepts. Automaton has 794 states and 1079 transitions. Word has length 55 [2022-04-05 09:30:11,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 09:30:11,054 INFO L478 AbstractCegarLoop]: Abstraction has 794 states and 1079 transitions. [2022-04-05 09:30:11,054 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.7333333333333334) internal successors, (41), 7 states have internal predecessors, (41), 2 states have call successors, (8), 7 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 1 states have call successors, (6) [2022-04-05 09:30:11,054 INFO L276 IsEmpty]: Start isEmpty. Operand 794 states and 1079 transitions. [2022-04-05 09:30:11,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-04-05 09:30:11,055 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 09:30:11,055 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, 1, 1] [2022-04-05 09:30:11,055 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-04-05 09:30:11,056 INFO L403 AbstractCegarLoop]: === Iteration 24 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 09:30:11,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 09:30:11,056 INFO L85 PathProgramCache]: Analyzing trace with hash 301163047, now seen corresponding path program 1 times [2022-04-05 09:30:11,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 09:30:11,056 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894757863] [2022-04-05 09:30:11,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 09:30:11,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 09:30:11,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:11,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 09:30:11,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:11,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 09:30:11,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:11,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-05 09:30:11,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:11,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-05 09:30:11,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:11,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-04-05 09:30:11,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:11,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-04-05 09:30:11,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:11,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-05 09:30:11,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 09:30:11,186 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894757863] [2022-04-05 09:30:11,186 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1894757863] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 09:30:11,186 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 09:30:11,186 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-04-05 09:30:11,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756586915] [2022-04-05 09:30:11,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 09:30:11,186 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-04-05 09:30:11,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 09:30:11,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-04-05 09:30:11,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-04-05 09:30:11,187 INFO L87 Difference]: Start difference. First operand 794 states and 1079 transitions. Second operand has 10 states, 10 states have (on average 4.2) internal successors, (42), 4 states have internal predecessors, (42), 3 states have call successors, (8), 8 states have call predecessors, (8), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-04-05 09:30:12,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 09:30:12,820 INFO L93 Difference]: Finished difference Result 979 states and 1361 transitions. [2022-04-05 09:30:12,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-04-05 09:30:12,821 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.2) internal successors, (42), 4 states have internal predecessors, (42), 3 states have call successors, (8), 8 states have call predecessors, (8), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 56 [2022-04-05 09:30:12,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 09:30:12,823 INFO L225 Difference]: With dead ends: 979 [2022-04-05 09:30:12,823 INFO L226 Difference]: Without dead ends: 936 [2022-04-05 09:30:12,824 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2022-04-05 09:30:12,825 INFO L913 BasicCegarLoop]: 680 mSDtfsCounter, 1870 mSDsluCounter, 621 mSDsCounter, 0 mSdLazyCounter, 2112 mSolverCounterSat, 513 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s 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, 1.4s IncrementalHoareTripleChecker+Time [2022-04-05 09:30:12,825 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1880 Valid, 1301 Invalid, 2625 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [513 Valid, 2112 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-04-05 09:30:12,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 936 states. [2022-04-05 09:30:12,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 936 to 794. [2022-04-05 09:30:12,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 794 states, 621 states have (on average 1.3494363929146538) internal successors, (838), 633 states have internal predecessors, (838), 105 states have call successors, (105), 49 states have call predecessors, (105), 67 states have return successors, (135), 118 states have call predecessors, (135), 99 states have call successors, (135) [2022-04-05 09:30:12,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 794 states to 794 states and 1078 transitions. [2022-04-05 09:30:12,883 INFO L78 Accepts]: Start accepts. Automaton has 794 states and 1078 transitions. Word has length 56 [2022-04-05 09:30:12,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 09:30:12,883 INFO L478 AbstractCegarLoop]: Abstraction has 794 states and 1078 transitions. [2022-04-05 09:30:12,884 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.2) internal successors, (42), 4 states have internal predecessors, (42), 3 states have call successors, (8), 8 states have call predecessors, (8), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-04-05 09:30:12,884 INFO L276 IsEmpty]: Start isEmpty. Operand 794 states and 1078 transitions. [2022-04-05 09:30:12,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-04-05 09:30:12,885 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 09:30:12,885 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 09:30:12,885 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-04-05 09:30:12,885 INFO L403 AbstractCegarLoop]: === Iteration 25 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 09:30:12,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 09:30:12,886 INFO L85 PathProgramCache]: Analyzing trace with hash -979957660, now seen corresponding path program 1 times [2022-04-05 09:30:12,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 09:30:12,886 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020790035] [2022-04-05 09:30:12,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 09:30:12,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 09:30:12,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:12,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 09:30:12,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:12,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 09:30:12,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:12,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-05 09:30:12,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:13,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-04-05 09:30:13,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:13,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-05 09:30:13,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:13,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-05 09:30:13,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:13,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-05 09:30:13,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 09:30:13,101 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020790035] [2022-04-05 09:30:13,101 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2020790035] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 09:30:13,101 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 09:30:13,101 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-04-05 09:30:13,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815502591] [2022-04-05 09:30:13,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 09:30:13,102 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-04-05 09:30:13,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 09:30:13,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-04-05 09:30:13,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2022-04-05 09:30:13,103 INFO L87 Difference]: Start difference. First operand 794 states and 1078 transitions. Second operand has 15 states, 15 states have (on average 2.8) internal successors, (42), 7 states have internal predecessors, (42), 2 states have call successors, (8), 7 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 1 states have call successors, (6) [2022-04-05 09:30:15,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 09:30:15,627 INFO L93 Difference]: Finished difference Result 927 states and 1302 transitions. [2022-04-05 09:30:15,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-04-05 09:30:15,627 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.8) internal successors, (42), 7 states have internal predecessors, (42), 2 states have call successors, (8), 7 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 1 states have call successors, (6) Word has length 56 [2022-04-05 09:30:15,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 09:30:15,630 INFO L225 Difference]: With dead ends: 927 [2022-04-05 09:30:15,630 INFO L226 Difference]: Without dead ends: 909 [2022-04-05 09:30:15,630 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 [2022-04-05 09:30:15,631 INFO L913 BasicCegarLoop]: 653 mSDtfsCounter, 656 mSDsluCounter, 1958 mSDsCounter, 0 mSdLazyCounter, 5084 mSolverCounterSat, 268 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s 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, 2.4s IncrementalHoareTripleChecker+Time [2022-04-05 09:30:15,631 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [658 Valid, 2611 Invalid, 5352 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [268 Valid, 5084 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-04-05 09:30:15,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 909 states. [2022-04-05 09:30:15,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 909 to 789. [2022-04-05 09:30:15,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 789 states, 618 states have (on average 1.3495145631067962) internal successors, (834), 630 states have internal predecessors, (834), 104 states have call successors, (104), 49 states have call predecessors, (104), 66 states have return successors, (133), 116 states have call predecessors, (133), 98 states have call successors, (133) [2022-04-05 09:30:15,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 789 states to 789 states and 1071 transitions. [2022-04-05 09:30:15,690 INFO L78 Accepts]: Start accepts. Automaton has 789 states and 1071 transitions. Word has length 56 [2022-04-05 09:30:15,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 09:30:15,690 INFO L478 AbstractCegarLoop]: Abstraction has 789 states and 1071 transitions. [2022-04-05 09:30:15,690 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.8) internal successors, (42), 7 states have internal predecessors, (42), 2 states have call successors, (8), 7 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 1 states have call successors, (6) [2022-04-05 09:30:15,690 INFO L276 IsEmpty]: Start isEmpty. Operand 789 states and 1071 transitions. [2022-04-05 09:30:15,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-04-05 09:30:15,692 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 09:30:15,692 INFO L499 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 09:30:15,692 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-04-05 09:30:15,692 INFO L403 AbstractCegarLoop]: === Iteration 26 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 09:30:15,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 09:30:15,692 INFO L85 PathProgramCache]: Analyzing trace with hash -1342046640, now seen corresponding path program 1 times [2022-04-05 09:30:15,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 09:30:15,692 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654255056] [2022-04-05 09:30:15,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 09:30:15,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 09:30:15,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:15,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 09:30:15,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:15,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 09:30:15,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:15,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-05 09:30:15,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:15,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-04-05 09:30:15,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:15,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-04-05 09:30:15,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:15,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-05 09:30:15,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:15,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-05 09:30:15,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:15,831 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-05 09:30:15,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 09:30:15,831 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654255056] [2022-04-05 09:30:15,831 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [654255056] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 09:30:15,831 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 09:30:15,831 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-04-05 09:30:15,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973116202] [2022-04-05 09:30:15,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 09:30:15,832 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-04-05 09:30:15,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 09:30:15,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-04-05 09:30:15,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2022-04-05 09:30:15,832 INFO L87 Difference]: Start difference. First operand 789 states and 1071 transitions. Second operand has 11 states, 11 states have (on average 4.909090909090909) internal successors, (54), 5 states have internal predecessors, (54), 3 states have call successors, (12), 9 states have call predecessors, (12), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-04-05 09:30:17,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 09:30:17,080 INFO L93 Difference]: Finished difference Result 1224 states and 1667 transitions. [2022-04-05 09:30:17,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-04-05 09:30:17,080 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.909090909090909) internal successors, (54), 5 states have internal predecessors, (54), 3 states have call successors, (12), 9 states have call predecessors, (12), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 73 [2022-04-05 09:30:17,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 09:30:17,083 INFO L225 Difference]: With dead ends: 1224 [2022-04-05 09:30:17,083 INFO L226 Difference]: Without dead ends: 778 [2022-04-05 09:30:17,084 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 [2022-04-05 09:30:17,084 INFO L913 BasicCegarLoop]: 530 mSDtfsCounter, 1719 mSDsluCounter, 416 mSDsCounter, 0 mSdLazyCounter, 1167 mSolverCounterSat, 624 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s 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 [2022-04-05 09:30:17,085 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] [2022-04-05 09:30:17,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 778 states. [2022-04-05 09:30:17,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 778 to 778. [2022-04-05 09:30:17,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 778 states, 609 states have (on average 1.341543513957307) internal successors, (817), 620 states have internal predecessors, (817), 103 states have call successors, (103), 49 states have call predecessors, (103), 65 states have return successors, (122), 115 states have call predecessors, (122), 97 states have call successors, (122) [2022-04-05 09:30:17,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 778 states to 778 states and 1042 transitions. [2022-04-05 09:30:17,142 INFO L78 Accepts]: Start accepts. Automaton has 778 states and 1042 transitions. Word has length 73 [2022-04-05 09:30:17,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 09:30:17,142 INFO L478 AbstractCegarLoop]: Abstraction has 778 states and 1042 transitions. [2022-04-05 09:30:17,142 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.909090909090909) internal successors, (54), 5 states have internal predecessors, (54), 3 states have call successors, (12), 9 states have call predecessors, (12), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-04-05 09:30:17,142 INFO L276 IsEmpty]: Start isEmpty. Operand 778 states and 1042 transitions. [2022-04-05 09:30:17,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-04-05 09:30:17,144 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 09:30:17,144 INFO L499 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 09:30:17,144 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-04-05 09:30:17,144 INFO L403 AbstractCegarLoop]: === Iteration 27 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 09:30:17,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 09:30:17,144 INFO L85 PathProgramCache]: Analyzing trace with hash 687939260, now seen corresponding path program 1 times [2022-04-05 09:30:17,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 09:30:17,144 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520608137] [2022-04-05 09:30:17,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 09:30:17,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 09:30:17,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:17,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 09:30:17,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:17,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 09:30:17,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:17,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-05 09:30:17,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:17,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-04-05 09:30:17,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:17,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-04-05 09:30:17,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:17,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-05 09:30:17,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:17,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-05 09:30:17,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:17,275 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-05 09:30:17,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 09:30:17,275 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [520608137] [2022-04-05 09:30:17,275 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [520608137] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 09:30:17,276 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1082715623] [2022-04-05 09:30:17,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 09:30:17,276 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 09:30:17,276 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 09:30:17,296 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-05 09:30:17,305 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-04-05 09:30:17,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:17,471 INFO L263 TraceCheckSpWp]: Trace formula consists of 837 conjuncts, 6 conjunts are in the unsatisfiable core [2022-04-05 09:30:17,477 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 09:30:17,746 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-05 09:30:17,746 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 09:30:17,920 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-05 09:30:17,921 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1082715623] provided 1 perfect and 1 imperfect interpolant sequences [2022-04-05 09:30:17,921 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-04-05 09:30:17,921 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9, 5] total 15 [2022-04-05 09:30:17,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166744599] [2022-04-05 09:30:17,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 09:30:17,921 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-04-05 09:30:17,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 09:30:17,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-04-05 09:30:17,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2022-04-05 09:30:17,922 INFO L87 Difference]: Start difference. First operand 778 states and 1042 transitions. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 4 states have call successors, (12), 4 states have call predecessors, (12), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-04-05 09:30:18,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 09:30:18,266 INFO L93 Difference]: Finished difference Result 1087 states and 1442 transitions. [2022-04-05 09:30:18,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-04-05 09:30:18,267 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 4 states have call successors, (12), 4 states have call predecessors, (12), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 74 [2022-04-05 09:30:18,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 09:30:18,269 INFO L225 Difference]: With dead ends: 1087 [2022-04-05 09:30:18,270 INFO L226 Difference]: Without dead ends: 923 [2022-04-05 09:30:18,270 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 151 SyntacticMatches, 4 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2022-04-05 09:30:18,271 INFO L913 BasicCegarLoop]: 687 mSDtfsCounter, 760 mSDsluCounter, 887 mSDsCounter, 0 mSdLazyCounter, 412 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 765 SdHoareTripleChecker+Valid, 1574 SdHoareTripleChecker+Invalid, 453 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 412 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-04-05 09:30:18,271 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [765 Valid, 1574 Invalid, 453 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 412 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-04-05 09:30:18,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 923 states. [2022-04-05 09:30:18,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 923 to 816. [2022-04-05 09:30:18,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 816 states, 640 states have (on average 1.340625) internal successors, (858), 651 states have internal predecessors, (858), 106 states have call successors, (106), 51 states have call predecessors, (106), 69 states have return successors, (128), 120 states have call predecessors, (128), 100 states have call successors, (128) [2022-04-05 09:30:18,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 816 states to 816 states and 1092 transitions. [2022-04-05 09:30:18,337 INFO L78 Accepts]: Start accepts. Automaton has 816 states and 1092 transitions. Word has length 74 [2022-04-05 09:30:18,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 09:30:18,338 INFO L478 AbstractCegarLoop]: Abstraction has 816 states and 1092 transitions. [2022-04-05 09:30:18,338 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 4 states have call successors, (12), 4 states have call predecessors, (12), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-04-05 09:30:18,338 INFO L276 IsEmpty]: Start isEmpty. Operand 816 states and 1092 transitions. [2022-04-05 09:30:18,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-04-05 09:30:18,339 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 09:30:18,339 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 09:30:18,358 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-04-05 09:30:18,542 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-04-05 09:30:18,542 INFO L403 AbstractCegarLoop]: === Iteration 28 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 09:30:18,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 09:30:18,543 INFO L85 PathProgramCache]: Analyzing trace with hash -917115183, now seen corresponding path program 1 times [2022-04-05 09:30:18,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 09:30:18,543 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62046493] [2022-04-05 09:30:18,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 09:30:18,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 09:30:18,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:18,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 09:30:18,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:18,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 09:30:18,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:18,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-05 09:30:18,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:18,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-05 09:30:18,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:18,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-05 09:30:18,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:18,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-05 09:30:18,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:18,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-05 09:30:18,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:18,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-05 09:30:18,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 09:30:18,845 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62046493] [2022-04-05 09:30:18,845 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [62046493] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 09:30:18,846 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 09:30:18,846 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-04-05 09:30:18,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394360912] [2022-04-05 09:30:18,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 09:30:18,847 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-04-05 09:30:18,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 09:30:18,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-04-05 09:30:18,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=327, Unknown=0, NotChecked=0, Total=380 [2022-04-05 09:30:18,847 INFO L87 Difference]: Start difference. First operand 816 states and 1092 transitions. Second operand has 20 states, 19 states have (on average 2.263157894736842) internal successors, (43), 10 states have internal predecessors, (43), 4 states have call successors, (9), 9 states have call predecessors, (9), 4 states have return successors, (7), 5 states have call predecessors, (7), 3 states have call successors, (7) [2022-04-05 09:30:21,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 09:30:21,105 INFO L93 Difference]: Finished difference Result 842 states and 1120 transitions. [2022-04-05 09:30:21,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-04-05 09:30:21,105 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 2.263157894736842) internal successors, (43), 10 states have internal predecessors, (43), 4 states have call successors, (9), 9 states have call predecessors, (9), 4 states have return successors, (7), 5 states have call predecessors, (7), 3 states have call successors, (7) Word has length 59 [2022-04-05 09:30:21,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 09:30:21,108 INFO L225 Difference]: With dead ends: 842 [2022-04-05 09:30:21,108 INFO L226 Difference]: Without dead ends: 817 [2022-04-05 09:30:21,108 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 [2022-04-05 09:30:21,109 INFO L913 BasicCegarLoop]: 565 mSDtfsCounter, 1662 mSDsluCounter, 1734 mSDsCounter, 0 mSdLazyCounter, 5877 mSolverCounterSat, 591 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1665 SdHoareTripleChecker+Valid, 2299 SdHoareTripleChecker+Invalid, 6468 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 591 IncrementalHoareTripleChecker+Valid, 5877 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-04-05 09:30:21,109 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1665 Valid, 2299 Invalid, 6468 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [591 Valid, 5877 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-04-05 09:30:21,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 817 states. [2022-04-05 09:30:21,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 817 to 815. [2022-04-05 09:30:21,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 815 states, 639 states have (on average 1.325508607198748) internal successors, (847), 650 states have internal predecessors, (847), 106 states have call successors, (106), 51 states have call predecessors, (106), 69 states have return successors, (128), 120 states have call predecessors, (128), 100 states have call successors, (128) [2022-04-05 09:30:21,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 815 states to 815 states and 1081 transitions. [2022-04-05 09:30:21,223 INFO L78 Accepts]: Start accepts. Automaton has 815 states and 1081 transitions. Word has length 59 [2022-04-05 09:30:21,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 09:30:21,224 INFO L478 AbstractCegarLoop]: Abstraction has 815 states and 1081 transitions. [2022-04-05 09:30:21,224 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 2.263157894736842) internal successors, (43), 10 states have internal predecessors, (43), 4 states have call successors, (9), 9 states have call predecessors, (9), 4 states have return successors, (7), 5 states have call predecessors, (7), 3 states have call successors, (7) [2022-04-05 09:30:21,224 INFO L276 IsEmpty]: Start isEmpty. Operand 815 states and 1081 transitions. [2022-04-05 09:30:21,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-04-05 09:30:21,225 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 09:30:21,225 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 09:30:21,225 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-04-05 09:30:21,225 INFO L403 AbstractCegarLoop]: === Iteration 29 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 09:30:21,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 09:30:21,225 INFO L85 PathProgramCache]: Analyzing trace with hash 1794647803, now seen corresponding path program 1 times [2022-04-05 09:30:21,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 09:30:21,226 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075205770] [2022-04-05 09:30:21,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 09:30:21,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 09:30:21,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:21,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 09:30:21,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:21,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 09:30:21,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:21,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-05 09:30:21,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:21,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-05 09:30:21,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:21,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 09:30:21,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:21,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-05 09:30:21,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:21,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-05 09:30:21,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 09:30:21,414 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075205770] [2022-04-05 09:30:21,414 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1075205770] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 09:30:21,414 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 09:30:21,414 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-04-05 09:30:21,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009402002] [2022-04-05 09:30:21,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 09:30:21,414 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-04-05 09:30:21,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 09:30:21,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-04-05 09:30:21,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2022-04-05 09:30:21,415 INFO L87 Difference]: Start difference. First operand 815 states and 1081 transitions. Second operand has 16 states, 16 states have (on average 2.75) internal successors, (44), 8 states have internal predecessors, (44), 2 states have call successors, (8), 7 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 1 states have call successors, (6) [2022-04-05 09:30:23,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 09:30:23,263 INFO L93 Difference]: Finished difference Result 832 states and 1099 transitions. [2022-04-05 09:30:23,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-04-05 09:30:23,264 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.75) internal successors, (44), 8 states have internal predecessors, (44), 2 states have call successors, (8), 7 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 1 states have call successors, (6) Word has length 58 [2022-04-05 09:30:23,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 09:30:23,266 INFO L225 Difference]: With dead ends: 832 [2022-04-05 09:30:23,266 INFO L226 Difference]: Without dead ends: 812 [2022-04-05 09:30:23,266 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2022-04-05 09:30:23,267 INFO L913 BasicCegarLoop]: 576 mSDtfsCounter, 941 mSDsluCounter, 1548 mSDsCounter, 0 mSdLazyCounter, 4967 mSolverCounterSat, 336 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 943 SdHoareTripleChecker+Valid, 2124 SdHoareTripleChecker+Invalid, 5303 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 336 IncrementalHoareTripleChecker+Valid, 4967 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-04-05 09:30:23,267 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [943 Valid, 2124 Invalid, 5303 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [336 Valid, 4967 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-04-05 09:30:23,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 812 states. [2022-04-05 09:30:23,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 812 to 812. [2022-04-05 09:30:23,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 812 states, 637 states have (on average 1.3249607535321821) internal successors, (844), 648 states have internal predecessors, (844), 105 states have call successors, (105), 51 states have call predecessors, (105), 69 states have return successors, (127), 119 states have call predecessors, (127), 99 states have call successors, (127) [2022-04-05 09:30:23,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 812 states to 812 states and 1076 transitions. [2022-04-05 09:30:23,359 INFO L78 Accepts]: Start accepts. Automaton has 812 states and 1076 transitions. Word has length 58 [2022-04-05 09:30:23,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 09:30:23,360 INFO L478 AbstractCegarLoop]: Abstraction has 812 states and 1076 transitions. [2022-04-05 09:30:23,360 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.75) internal successors, (44), 8 states have internal predecessors, (44), 2 states have call successors, (8), 7 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 1 states have call successors, (6) [2022-04-05 09:30:23,360 INFO L276 IsEmpty]: Start isEmpty. Operand 812 states and 1076 transitions. [2022-04-05 09:30:23,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-04-05 09:30:23,361 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 09:30:23,361 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 09:30:23,361 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-04-05 09:30:23,362 INFO L403 AbstractCegarLoop]: === Iteration 30 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 09:30:23,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 09:30:23,362 INFO L85 PathProgramCache]: Analyzing trace with hash 1644249478, now seen corresponding path program 1 times [2022-04-05 09:30:23,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 09:30:23,362 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261563127] [2022-04-05 09:30:23,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 09:30:23,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 09:30:23,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:23,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 09:30:23,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:23,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 09:30:23,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:23,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-05 09:30:23,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:23,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-05 09:30:23,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:23,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-05 09:30:23,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:23,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-05 09:30:23,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:23,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-05 09:30:23,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 09:30:23,544 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261563127] [2022-04-05 09:30:23,544 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [261563127] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 09:30:23,544 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 09:30:23,544 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-04-05 09:30:23,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235797815] [2022-04-05 09:30:23,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 09:30:23,544 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-04-05 09:30:23,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 09:30:23,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-04-05 09:30:23,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2022-04-05 09:30:23,545 INFO L87 Difference]: Start difference. First operand 812 states and 1076 transitions. Second operand has 16 states, 16 states have (on average 2.8125) internal successors, (45), 8 states have internal predecessors, (45), 3 states have call successors, (8), 8 states have call predecessors, (8), 3 states have return successors, (6), 4 states have call predecessors, (6), 2 states have call successors, (6) [2022-04-05 09:30:25,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 09:30:25,114 INFO L93 Difference]: Finished difference Result 865 states and 1131 transitions. [2022-04-05 09:30:25,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-04-05 09:30:25,114 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.8125) internal successors, (45), 8 states have internal predecessors, (45), 3 states have call successors, (8), 8 states have call predecessors, (8), 3 states have return successors, (6), 4 states have call predecessors, (6), 2 states have call successors, (6) Word has length 59 [2022-04-05 09:30:25,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 09:30:25,116 INFO L225 Difference]: With dead ends: 865 [2022-04-05 09:30:25,116 INFO L226 Difference]: Without dead ends: 800 [2022-04-05 09:30:25,117 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=92, Invalid=414, Unknown=0, NotChecked=0, Total=506 [2022-04-05 09:30:25,126 INFO L913 BasicCegarLoop]: 552 mSDtfsCounter, 962 mSDsluCounter, 1231 mSDsCounter, 0 mSdLazyCounter, 4120 mSolverCounterSat, 351 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 965 SdHoareTripleChecker+Valid, 1783 SdHoareTripleChecker+Invalid, 4471 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 351 IncrementalHoareTripleChecker+Valid, 4120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-04-05 09:30:25,126 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [965 Valid, 1783 Invalid, 4471 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [351 Valid, 4120 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-04-05 09:30:25,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 800 states. [2022-04-05 09:30:25,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 800 to 800. [2022-04-05 09:30:25,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 800 states, 628 states have (on average 1.320063694267516) internal successors, (829), 639 states have internal predecessors, (829), 102 states have call successors, (102), 51 states have call predecessors, (102), 69 states have return successors, (124), 116 states have call predecessors, (124), 96 states have call successors, (124) [2022-04-05 09:30:25,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 800 states to 800 states and 1055 transitions. [2022-04-05 09:30:25,206 INFO L78 Accepts]: Start accepts. Automaton has 800 states and 1055 transitions. Word has length 59 [2022-04-05 09:30:25,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 09:30:25,206 INFO L478 AbstractCegarLoop]: Abstraction has 800 states and 1055 transitions. [2022-04-05 09:30:25,206 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.8125) internal successors, (45), 8 states have internal predecessors, (45), 3 states have call successors, (8), 8 states have call predecessors, (8), 3 states have return successors, (6), 4 states have call predecessors, (6), 2 states have call successors, (6) [2022-04-05 09:30:25,206 INFO L276 IsEmpty]: Start isEmpty. Operand 800 states and 1055 transitions. [2022-04-05 09:30:25,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-04-05 09:30:25,226 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 09:30:25,226 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 09:30:25,226 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-04-05 09:30:25,226 INFO L403 AbstractCegarLoop]: === Iteration 31 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 09:30:25,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 09:30:25,227 INFO L85 PathProgramCache]: Analyzing trace with hash -887424146, now seen corresponding path program 1 times [2022-04-05 09:30:25,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 09:30:25,227 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554363170] [2022-04-05 09:30:25,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 09:30:25,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 09:30:25,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:25,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 09:30:25,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:25,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 09:30:25,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:25,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-05 09:30:25,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:25,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-05 09:30:25,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:25,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-05 09:30:25,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:25,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-05 09:30:25,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:25,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-05 09:30:25,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:25,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-05 09:30:25,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 09:30:25,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554363170] [2022-04-05 09:30:25,367 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [554363170] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 09:30:25,368 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 09:30:25,368 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-04-05 09:30:25,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649876012] [2022-04-05 09:30:25,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 09:30:25,368 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-04-05 09:30:25,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 09:30:25,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-04-05 09:30:25,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-04-05 09:30:25,368 INFO L87 Difference]: Start difference. First operand 800 states and 1055 transitions. Second operand has 11 states, 11 states have (on average 4.0) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-04-05 09:30:26,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 09:30:26,235 INFO L93 Difference]: Finished difference Result 950 states and 1263 transitions. [2022-04-05 09:30:26,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-04-05 09:30:26,236 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.0) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 60 [2022-04-05 09:30:26,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 09:30:26,242 INFO L225 Difference]: With dead ends: 950 [2022-04-05 09:30:26,242 INFO L226 Difference]: Without dead ends: 845 [2022-04-05 09:30:26,242 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2022-04-05 09:30:26,242 INFO L913 BasicCegarLoop]: 540 mSDtfsCounter, 1602 mSDsluCounter, 558 mSDsCounter, 0 mSdLazyCounter, 1360 mSolverCounterSat, 598 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s 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, 0.7s IncrementalHoareTripleChecker+Time [2022-04-05 09:30:26,243 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1604 Valid, 1098 Invalid, 1958 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [598 Valid, 1360 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-04-05 09:30:26,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 845 states. [2022-04-05 09:30:26,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 845 to 807. [2022-04-05 09:30:26,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 807 states, 633 states have (on average 1.320695102685624) internal successors, (836), 645 states have internal predecessors, (836), 103 states have call successors, (103), 51 states have call predecessors, (103), 70 states have return successors, (131), 117 states have call predecessors, (131), 97 states have call successors, (131) [2022-04-05 09:30:26,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 807 states to 807 states and 1070 transitions. [2022-04-05 09:30:26,305 INFO L78 Accepts]: Start accepts. Automaton has 807 states and 1070 transitions. Word has length 60 [2022-04-05 09:30:26,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 09:30:26,306 INFO L478 AbstractCegarLoop]: Abstraction has 807 states and 1070 transitions. [2022-04-05 09:30:26,306 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.0) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-04-05 09:30:26,306 INFO L276 IsEmpty]: Start isEmpty. Operand 807 states and 1070 transitions. [2022-04-05 09:30:26,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-04-05 09:30:26,307 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 09:30:26,307 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 09:30:26,308 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-04-05 09:30:26,308 INFO L403 AbstractCegarLoop]: === Iteration 32 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 09:30:26,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 09:30:26,308 INFO L85 PathProgramCache]: Analyzing trace with hash 1397439309, now seen corresponding path program 1 times [2022-04-05 09:30:26,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 09:30:26,308 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734871380] [2022-04-05 09:30:26,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 09:30:26,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 09:30:26,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:26,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 09:30:26,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:26,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 09:30:26,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:26,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-05 09:30:26,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:26,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-05 09:30:26,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:26,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-05 09:30:26,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:26,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-05 09:30:26,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:26,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-05 09:30:26,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:26,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-05 09:30:26,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 09:30:26,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734871380] [2022-04-05 09:30:26,496 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [734871380] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 09:30:26,496 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 09:30:26,496 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-04-05 09:30:26,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361450463] [2022-04-05 09:30:26,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 09:30:26,497 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-04-05 09:30:26,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 09:30:26,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-04-05 09:30:26,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2022-04-05 09:30:26,497 INFO L87 Difference]: Start difference. First operand 807 states and 1070 transitions. Second operand has 16 states, 16 states have (on average 2.75) internal successors, (44), 7 states have internal predecessors, (44), 3 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 4 states have call predecessors, (7), 2 states have call successors, (7) [2022-04-05 09:30:27,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 09:30:27,869 INFO L93 Difference]: Finished difference Result 829 states and 1093 transitions. [2022-04-05 09:30:27,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-04-05 09:30:27,869 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.75) internal successors, (44), 7 states have internal predecessors, (44), 3 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 4 states have call predecessors, (7), 2 states have call successors, (7) Word has length 60 [2022-04-05 09:30:27,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 09:30:27,871 INFO L225 Difference]: With dead ends: 829 [2022-04-05 09:30:27,871 INFO L226 Difference]: Without dead ends: 805 [2022-04-05 09:30:27,872 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2022-04-05 09:30:27,872 INFO L913 BasicCegarLoop]: 558 mSDtfsCounter, 359 mSDsluCounter, 1381 mSDsCounter, 0 mSdLazyCounter, 3977 mSolverCounterSat, 118 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 362 SdHoareTripleChecker+Valid, 1939 SdHoareTripleChecker+Invalid, 4095 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 118 IncrementalHoareTripleChecker+Valid, 3977 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-04-05 09:30:27,873 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [362 Valid, 1939 Invalid, 4095 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [118 Valid, 3977 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-04-05 09:30:27,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 805 states. [2022-04-05 09:30:27,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 805 to 805. [2022-04-05 09:30:27,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 805 states, 632 states have (on average 1.3196202531645569) internal successors, (834), 644 states have internal predecessors, (834), 102 states have call successors, (102), 51 states have call predecessors, (102), 70 states have return successors, (130), 116 states have call predecessors, (130), 96 states have call successors, (130) [2022-04-05 09:30:27,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 805 states to 805 states and 1066 transitions. [2022-04-05 09:30:27,933 INFO L78 Accepts]: Start accepts. Automaton has 805 states and 1066 transitions. Word has length 60 [2022-04-05 09:30:27,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 09:30:27,933 INFO L478 AbstractCegarLoop]: Abstraction has 805 states and 1066 transitions. [2022-04-05 09:30:27,933 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.75) internal successors, (44), 7 states have internal predecessors, (44), 3 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 4 states have call predecessors, (7), 2 states have call successors, (7) [2022-04-05 09:30:27,934 INFO L276 IsEmpty]: Start isEmpty. Operand 805 states and 1066 transitions. [2022-04-05 09:30:27,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-04-05 09:30:27,935 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 09:30:27,935 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 09:30:27,935 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-04-05 09:30:27,935 INFO L403 AbstractCegarLoop]: === Iteration 33 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 09:30:27,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 09:30:27,935 INFO L85 PathProgramCache]: Analyzing trace with hash 303583592, now seen corresponding path program 1 times [2022-04-05 09:30:27,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 09:30:27,935 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211371929] [2022-04-05 09:30:27,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 09:30:27,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 09:30:27,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:27,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 09:30:27,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:28,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 09:30:28,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:28,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-05 09:30:28,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:28,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-05 09:30:28,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:28,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-05 09:30:28,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:28,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-04-05 09:30:28,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:28,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-05 09:30:28,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 09:30:28,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211371929] [2022-04-05 09:30:28,090 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1211371929] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 09:30:28,090 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 09:30:28,090 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-04-05 09:30:28,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563861466] [2022-04-05 09:30:28,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 09:30:28,090 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-04-05 09:30:28,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 09:30:28,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-04-05 09:30:28,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2022-04-05 09:30:28,091 INFO L87 Difference]: Start difference. First operand 805 states and 1066 transitions. Second operand has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (8), 8 states have call predecessors, (8), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2022-04-05 09:30:29,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 09:30:29,246 INFO L93 Difference]: Finished difference Result 839 states and 1100 transitions. [2022-04-05 09:30:29,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-04-05 09:30:29,246 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (8), 8 states have call predecessors, (8), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) Word has length 60 [2022-04-05 09:30:29,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 09:30:29,248 INFO L225 Difference]: With dead ends: 839 [2022-04-05 09:30:29,248 INFO L226 Difference]: Without dead ends: 807 [2022-04-05 09:30:29,248 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2022-04-05 09:30:29,249 INFO L913 BasicCegarLoop]: 538 mSDtfsCounter, 1228 mSDsluCounter, 589 mSDsCounter, 0 mSdLazyCounter, 1751 mSolverCounterSat, 430 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s 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, 1.0s IncrementalHoareTripleChecker+Time [2022-04-05 09:30:29,249 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1230 Valid, 1127 Invalid, 2181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [430 Valid, 1751 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-04-05 09:30:29,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 807 states. [2022-04-05 09:30:29,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 807 to 805. [2022-04-05 09:30:29,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 805 states, 632 states have (on average 1.3180379746835442) internal successors, (833), 644 states have internal predecessors, (833), 102 states have call successors, (102), 51 states have call predecessors, (102), 70 states have return successors, (130), 116 states have call predecessors, (130), 96 states have call successors, (130) [2022-04-05 09:30:29,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 805 states to 805 states and 1065 transitions. [2022-04-05 09:30:29,308 INFO L78 Accepts]: Start accepts. Automaton has 805 states and 1065 transitions. Word has length 60 [2022-04-05 09:30:29,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 09:30:29,308 INFO L478 AbstractCegarLoop]: Abstraction has 805 states and 1065 transitions. [2022-04-05 09:30:29,309 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (8), 8 states have call predecessors, (8), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2022-04-05 09:30:29,309 INFO L276 IsEmpty]: Start isEmpty. Operand 805 states and 1065 transitions. [2022-04-05 09:30:29,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-04-05 09:30:29,310 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 09:30:29,310 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 09:30:29,310 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-04-05 09:30:29,310 INFO L403 AbstractCegarLoop]: === Iteration 34 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 09:30:29,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 09:30:29,311 INFO L85 PathProgramCache]: Analyzing trace with hash 48847047, now seen corresponding path program 1 times [2022-04-05 09:30:29,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 09:30:29,311 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438670503] [2022-04-05 09:30:29,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 09:30:29,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 09:30:29,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:29,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 09:30:29,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:29,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 09:30:29,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:29,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-05 09:30:29,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:29,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-05 09:30:29,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:29,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-05 09:30:29,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:29,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-04-05 09:30:29,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:29,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-05 09:30:29,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 09:30:29,504 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438670503] [2022-04-05 09:30:29,504 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [438670503] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 09:30:29,504 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 09:30:29,504 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-04-05 09:30:29,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449526513] [2022-04-05 09:30:29,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 09:30:29,505 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-04-05 09:30:29,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 09:30:29,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-04-05 09:30:29,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2022-04-05 09:30:29,505 INFO L87 Difference]: Start difference. First operand 805 states and 1065 transitions. Second operand has 16 states, 16 states have (on average 2.875) internal successors, (46), 8 states have internal predecessors, (46), 3 states have call successors, (8), 8 states have call predecessors, (8), 3 states have return successors, (6), 4 states have call predecessors, (6), 2 states have call successors, (6) [2022-04-05 09:30:31,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 09:30:31,298 INFO L93 Difference]: Finished difference Result 838 states and 1104 transitions. [2022-04-05 09:30:31,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-04-05 09:30:31,298 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.875) internal successors, (46), 8 states have internal predecessors, (46), 3 states have call successors, (8), 8 states have call predecessors, (8), 3 states have return successors, (6), 4 states have call predecessors, (6), 2 states have call successors, (6) Word has length 60 [2022-04-05 09:30:31,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 09:30:31,300 INFO L225 Difference]: With dead ends: 838 [2022-04-05 09:30:31,300 INFO L226 Difference]: Without dead ends: 797 [2022-04-05 09:30:31,301 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=92, Invalid=414, Unknown=0, NotChecked=0, Total=506 [2022-04-05 09:30:31,301 INFO L913 BasicCegarLoop]: 552 mSDtfsCounter, 1278 mSDsluCounter, 1215 mSDsCounter, 0 mSdLazyCounter, 3483 mSolverCounterSat, 447 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1281 SdHoareTripleChecker+Valid, 1767 SdHoareTripleChecker+Invalid, 3930 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 447 IncrementalHoareTripleChecker+Valid, 3483 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-04-05 09:30:31,301 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1281 Valid, 1767 Invalid, 3930 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [447 Valid, 3483 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-04-05 09:30:31,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 797 states. [2022-04-05 09:30:31,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 797 to 797. [2022-04-05 09:30:31,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 797 states, 626 states have (on average 1.3130990415335464) internal successors, (822), 638 states have internal predecessors, (822), 100 states have call successors, (100), 51 states have call predecessors, (100), 70 states have return successors, (128), 114 states have call predecessors, (128), 94 states have call successors, (128) [2022-04-05 09:30:31,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 797 states to 797 states and 1050 transitions. [2022-04-05 09:30:31,359 INFO L78 Accepts]: Start accepts. Automaton has 797 states and 1050 transitions. Word has length 60 [2022-04-05 09:30:31,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 09:30:31,359 INFO L478 AbstractCegarLoop]: Abstraction has 797 states and 1050 transitions. [2022-04-05 09:30:31,359 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.875) internal successors, (46), 8 states have internal predecessors, (46), 3 states have call successors, (8), 8 states have call predecessors, (8), 3 states have return successors, (6), 4 states have call predecessors, (6), 2 states have call successors, (6) [2022-04-05 09:30:31,359 INFO L276 IsEmpty]: Start isEmpty. Operand 797 states and 1050 transitions. [2022-04-05 09:30:31,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-04-05 09:30:31,361 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 09:30:31,361 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 09:30:31,361 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-04-05 09:30:31,361 INFO L403 AbstractCegarLoop]: === Iteration 35 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 09:30:31,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 09:30:31,361 INFO L85 PathProgramCache]: Analyzing trace with hash 330565666, now seen corresponding path program 1 times [2022-04-05 09:30:31,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 09:30:31,361 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069402805] [2022-04-05 09:30:31,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 09:30:31,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 09:30:31,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:31,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 09:30:31,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:31,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 09:30:31,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:31,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-05 09:30:31,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:31,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-05 09:30:31,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:31,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-05 09:30:31,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:31,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-05 09:30:31,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:31,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-04-05 09:30:31,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:31,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-05 09:30:31,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 09:30:31,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069402805] [2022-04-05 09:30:31,502 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2069402805] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 09:30:31,502 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 09:30:31,502 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-04-05 09:30:31,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593131268] [2022-04-05 09:30:31,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 09:30:31,503 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-04-05 09:30:31,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 09:30:31,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-04-05 09:30:31,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2022-04-05 09:30:31,503 INFO L87 Difference]: Start difference. First operand 797 states and 1050 transitions. Second operand has 12 states, 12 states have (on average 3.75) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-04-05 09:30:32,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 09:30:32,882 INFO L93 Difference]: Finished difference Result 845 states and 1118 transitions. [2022-04-05 09:30:32,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-04-05 09:30:32,883 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.75) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 61 [2022-04-05 09:30:32,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 09:30:32,885 INFO L225 Difference]: With dead ends: 845 [2022-04-05 09:30:32,885 INFO L226 Difference]: Without dead ends: 811 [2022-04-05 09:30:32,887 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2022-04-05 09:30:32,888 INFO L913 BasicCegarLoop]: 522 mSDtfsCounter, 1213 mSDsluCounter, 773 mSDsCounter, 0 mSdLazyCounter, 1888 mSolverCounterSat, 490 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s 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, 1.2s IncrementalHoareTripleChecker+Time [2022-04-05 09:30:32,888 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1215 Valid, 1295 Invalid, 2378 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [490 Valid, 1888 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-04-05 09:30:32,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 811 states. [2022-04-05 09:30:32,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 811 to 801. [2022-04-05 09:30:32,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 801 states, 628 states have (on average 1.3121019108280254) internal successors, (824), 642 states have internal predecessors, (824), 100 states have call successors, (100), 51 states have call predecessors, (100), 72 states have return successors, (144), 114 states have call predecessors, (144), 94 states have call successors, (144) [2022-04-05 09:30:32,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 801 states to 801 states and 1068 transitions. [2022-04-05 09:30:32,954 INFO L78 Accepts]: Start accepts. Automaton has 801 states and 1068 transitions. Word has length 61 [2022-04-05 09:30:32,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 09:30:32,954 INFO L478 AbstractCegarLoop]: Abstraction has 801 states and 1068 transitions. [2022-04-05 09:30:32,954 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.75) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-04-05 09:30:32,954 INFO L276 IsEmpty]: Start isEmpty. Operand 801 states and 1068 transitions. [2022-04-05 09:30:32,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-04-05 09:30:32,955 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 09:30:32,955 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 09:30:32,955 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-04-05 09:30:32,956 INFO L403 AbstractCegarLoop]: === Iteration 36 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 09:30:32,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 09:30:32,956 INFO L85 PathProgramCache]: Analyzing trace with hash 1992943065, now seen corresponding path program 1 times [2022-04-05 09:30:32,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 09:30:32,956 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216676562] [2022-04-05 09:30:32,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 09:30:32,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 09:30:32,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:33,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 09:30:33,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:33,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 09:30:33,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:33,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-05 09:30:33,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:33,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-05 09:30:33,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:33,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-05 09:30:33,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:33,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-05 09:30:33,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:33,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-05 09:30:33,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:33,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-05 09:30:33,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:33,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-05 09:30:33,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 09:30:33,294 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216676562] [2022-04-05 09:30:33,294 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1216676562] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 09:30:33,294 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 09:30:33,294 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-04-05 09:30:33,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482827448] [2022-04-05 09:30:33,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 09:30:33,295 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-04-05 09:30:33,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 09:30:33,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-04-05 09:30:33,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=359, Unknown=0, NotChecked=0, Total=420 [2022-04-05 09:30:33,296 INFO L87 Difference]: Start difference. First operand 801 states and 1068 transitions. Second operand has 21 states, 20 states have (on average 2.45) internal successors, (49), 10 states have internal predecessors, (49), 4 states have call successors, (10), 10 states have call predecessors, (10), 4 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) [2022-04-05 09:30:35,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 09:30:35,375 INFO L93 Difference]: Finished difference Result 825 states and 1093 transitions. [2022-04-05 09:30:35,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-04-05 09:30:35,377 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 2.45) internal successors, (49), 10 states have internal predecessors, (49), 4 states have call successors, (10), 10 states have call predecessors, (10), 4 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) Word has length 67 [2022-04-05 09:30:35,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 09:30:35,381 INFO L225 Difference]: With dead ends: 825 [2022-04-05 09:30:35,381 INFO L226 Difference]: Without dead ends: 801 [2022-04-05 09:30:35,381 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=120, Invalid=692, Unknown=0, NotChecked=0, Total=812 [2022-04-05 09:30:35,381 INFO L913 BasicCegarLoop]: 527 mSDtfsCounter, 695 mSDsluCounter, 1716 mSDsCounter, 0 mSdLazyCounter, 4863 mSolverCounterSat, 239 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 697 SdHoareTripleChecker+Valid, 2243 SdHoareTripleChecker+Invalid, 5102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 239 IncrementalHoareTripleChecker+Valid, 4863 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-04-05 09:30:35,382 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [697 Valid, 2243 Invalid, 5102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [239 Valid, 4863 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-04-05 09:30:35,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 801 states. [2022-04-05 09:30:35,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 801 to 799. [2022-04-05 09:30:35,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 799 states, 627 states have (on average 1.3110047846889952) internal successors, (822), 641 states have internal predecessors, (822), 99 states have call successors, (99), 51 states have call predecessors, (99), 72 states have return successors, (143), 113 states have call predecessors, (143), 93 states have call successors, (143) [2022-04-05 09:30:35,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 799 states to 799 states and 1064 transitions. [2022-04-05 09:30:35,441 INFO L78 Accepts]: Start accepts. Automaton has 799 states and 1064 transitions. Word has length 67 [2022-04-05 09:30:35,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 09:30:35,442 INFO L478 AbstractCegarLoop]: Abstraction has 799 states and 1064 transitions. [2022-04-05 09:30:35,442 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 2.45) internal successors, (49), 10 states have internal predecessors, (49), 4 states have call successors, (10), 10 states have call predecessors, (10), 4 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) [2022-04-05 09:30:35,442 INFO L276 IsEmpty]: Start isEmpty. Operand 799 states and 1064 transitions. [2022-04-05 09:30:35,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-04-05 09:30:35,443 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 09:30:35,443 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 09:30:35,443 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-04-05 09:30:35,443 INFO L403 AbstractCegarLoop]: === Iteration 37 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 09:30:35,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 09:30:35,444 INFO L85 PathProgramCache]: Analyzing trace with hash -1749867339, now seen corresponding path program 1 times [2022-04-05 09:30:35,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 09:30:35,444 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003638843] [2022-04-05 09:30:35,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 09:30:35,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 09:30:35,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:35,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 09:30:35,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:35,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 09:30:35,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:35,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-05 09:30:35,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:35,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-05 09:30:35,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:35,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-05 09:30:35,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:35,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-04-05 09:30:35,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:35,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-05 09:30:35,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:35,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-05 09:30:35,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 09:30:35,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003638843] [2022-04-05 09:30:35,684 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2003638843] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 09:30:35,684 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 09:30:35,684 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-04-05 09:30:35,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717561638] [2022-04-05 09:30:35,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 09:30:35,685 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-04-05 09:30:35,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 09:30:35,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-04-05 09:30:35,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=327, Unknown=0, NotChecked=0, Total=380 [2022-04-05 09:30:35,687 INFO L87 Difference]: Start difference. First operand 799 states and 1064 transitions. Second operand has 20 states, 19 states have (on average 2.4210526315789473) internal successors, (46), 10 states have internal predecessors, (46), 4 states have call successors, (9), 9 states have call predecessors, (9), 4 states have return successors, (7), 5 states have call predecessors, (7), 3 states have call successors, (7) [2022-04-05 09:30:37,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 09:30:37,801 INFO L93 Difference]: Finished difference Result 823 states and 1089 transitions. [2022-04-05 09:30:37,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-04-05 09:30:37,801 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 2.4210526315789473) internal successors, (46), 10 states have internal predecessors, (46), 4 states have call successors, (9), 9 states have call predecessors, (9), 4 states have return successors, (7), 5 states have call predecessors, (7), 3 states have call successors, (7) Word has length 62 [2022-04-05 09:30:37,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 09:30:37,803 INFO L225 Difference]: With dead ends: 823 [2022-04-05 09:30:37,803 INFO L226 Difference]: Without dead ends: 799 [2022-04-05 09:30:37,804 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=99, Invalid=603, Unknown=0, NotChecked=0, Total=702 [2022-04-05 09:30:37,804 INFO L913 BasicCegarLoop]: 504 mSDtfsCounter, 935 mSDsluCounter, 1510 mSDsCounter, 0 mSdLazyCounter, 4837 mSolverCounterSat, 333 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 938 SdHoareTripleChecker+Valid, 2014 SdHoareTripleChecker+Invalid, 5170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 333 IncrementalHoareTripleChecker+Valid, 4837 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-04-05 09:30:37,804 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [938 Valid, 2014 Invalid, 5170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [333 Valid, 4837 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-04-05 09:30:37,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 799 states. [2022-04-05 09:30:37,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 799 to 797. [2022-04-05 09:30:37,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 797 states, 626 states have (on average 1.3099041533546325) internal successors, (820), 640 states have internal predecessors, (820), 98 states have call successors, (98), 51 states have call predecessors, (98), 72 states have return successors, (142), 112 states have call predecessors, (142), 92 states have call successors, (142) [2022-04-05 09:30:37,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 797 states to 797 states and 1060 transitions. [2022-04-05 09:30:37,864 INFO L78 Accepts]: Start accepts. Automaton has 797 states and 1060 transitions. Word has length 62 [2022-04-05 09:30:37,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 09:30:37,864 INFO L478 AbstractCegarLoop]: Abstraction has 797 states and 1060 transitions. [2022-04-05 09:30:37,865 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 2.4210526315789473) internal successors, (46), 10 states have internal predecessors, (46), 4 states have call successors, (9), 9 states have call predecessors, (9), 4 states have return successors, (7), 5 states have call predecessors, (7), 3 states have call successors, (7) [2022-04-05 09:30:37,865 INFO L276 IsEmpty]: Start isEmpty. Operand 797 states and 1060 transitions. [2022-04-05 09:30:37,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-04-05 09:30:37,866 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 09:30:37,866 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 09:30:37,866 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-04-05 09:30:37,866 INFO L403 AbstractCegarLoop]: === Iteration 38 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 09:30:37,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 09:30:37,868 INFO L85 PathProgramCache]: Analyzing trace with hash -418163084, now seen corresponding path program 1 times [2022-04-05 09:30:37,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 09:30:37,868 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193953179] [2022-04-05 09:30:37,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 09:30:37,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 09:30:37,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:37,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 09:30:37,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:37,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 09:30:37,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:37,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-05 09:30:37,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:37,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-05 09:30:37,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:38,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-04-05 09:30:38,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:38,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-05 09:30:38,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:38,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-05 09:30:38,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:38,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-05 09:30:38,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 09:30:38,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193953179] [2022-04-05 09:30:38,090 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [193953179] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 09:30:38,090 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 09:30:38,090 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-04-05 09:30:38,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531389420] [2022-04-05 09:30:38,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 09:30:38,090 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-04-05 09:30:38,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 09:30:38,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-04-05 09:30:38,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=296, Unknown=0, NotChecked=0, Total=342 [2022-04-05 09:30:38,091 INFO L87 Difference]: Start difference. First operand 797 states and 1060 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 9 states have internal predecessors, (47), 2 states have call successors, (9), 8 states have call predecessors, (9), 5 states have return successors, (7), 5 states have call predecessors, (7), 1 states have call successors, (7) [2022-04-05 09:30:40,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 09:30:40,179 INFO L93 Difference]: Finished difference Result 814 states and 1078 transitions. [2022-04-05 09:30:40,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-04-05 09:30:40,179 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 9 states have internal predecessors, (47), 2 states have call successors, (9), 8 states have call predecessors, (9), 5 states have return successors, (7), 5 states have call predecessors, (7), 1 states have call successors, (7) Word has length 63 [2022-04-05 09:30:40,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 09:30:40,181 INFO L225 Difference]: With dead ends: 814 [2022-04-05 09:30:40,181 INFO L226 Difference]: Without dead ends: 792 [2022-04-05 09:30:40,181 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=61, Invalid=401, Unknown=0, NotChecked=0, Total=462 [2022-04-05 09:30:40,182 INFO L913 BasicCegarLoop]: 527 mSDtfsCounter, 600 mSDsluCounter, 1750 mSDsCounter, 0 mSdLazyCounter, 5039 mSolverCounterSat, 208 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 602 SdHoareTripleChecker+Valid, 2277 SdHoareTripleChecker+Invalid, 5247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 208 IncrementalHoareTripleChecker+Valid, 5039 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-04-05 09:30:40,182 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [602 Valid, 2277 Invalid, 5247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [208 Valid, 5039 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-04-05 09:30:40,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 792 states. [2022-04-05 09:30:40,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 792 to 792. [2022-04-05 09:30:40,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 792 states, 623 states have (on average 1.3097913322632424) internal successors, (816), 637 states have internal predecessors, (816), 97 states have call successors, (97), 51 states have call predecessors, (97), 71 states have return successors, (140), 110 states have call predecessors, (140), 91 states have call successors, (140) [2022-04-05 09:30:40,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 792 states to 792 states and 1053 transitions. [2022-04-05 09:30:40,240 INFO L78 Accepts]: Start accepts. Automaton has 792 states and 1053 transitions. Word has length 63 [2022-04-05 09:30:40,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 09:30:40,241 INFO L478 AbstractCegarLoop]: Abstraction has 792 states and 1053 transitions. [2022-04-05 09:30:40,241 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 9 states have internal predecessors, (47), 2 states have call successors, (9), 8 states have call predecessors, (9), 5 states have return successors, (7), 5 states have call predecessors, (7), 1 states have call successors, (7) [2022-04-05 09:30:40,241 INFO L276 IsEmpty]: Start isEmpty. Operand 792 states and 1053 transitions. [2022-04-05 09:30:40,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-04-05 09:30:40,242 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 09:30:40,242 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 09:30:40,242 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-04-05 09:30:40,242 INFO L403 AbstractCegarLoop]: === Iteration 39 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 09:30:40,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 09:30:40,242 INFO L85 PathProgramCache]: Analyzing trace with hash -2020935180, now seen corresponding path program 1 times [2022-04-05 09:30:40,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 09:30:40,243 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612201370] [2022-04-05 09:30:40,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 09:30:40,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 09:30:40,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:40,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 09:30:40,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:40,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 09:30:40,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:40,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-05 09:30:40,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:40,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-05 09:30:40,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:40,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-05 09:30:40,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:40,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-05 09:30:40,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:40,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-05 09:30:40,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:40,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-05 09:30:40,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 09:30:40,486 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612201370] [2022-04-05 09:30:40,486 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1612201370] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 09:30:40,486 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 09:30:40,486 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-04-05 09:30:40,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034605385] [2022-04-05 09:30:40,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 09:30:40,487 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-04-05 09:30:40,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 09:30:40,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-04-05 09:30:40,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=296, Unknown=0, NotChecked=0, Total=342 [2022-04-05 09:30:40,487 INFO L87 Difference]: Start difference. First operand 792 states and 1053 transitions. Second operand has 19 states, 19 states have (on average 2.4210526315789473) internal successors, (46), 9 states have internal predecessors, (46), 2 states have call successors, (9), 8 states have call predecessors, (9), 5 states have return successors, (7), 5 states have call predecessors, (7), 1 states have call successors, (7) [2022-04-05 09:30:42,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 09:30:42,696 INFO L93 Difference]: Finished difference Result 809 states and 1071 transitions. [2022-04-05 09:30:42,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-04-05 09:30:42,697 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.4210526315789473) internal successors, (46), 9 states have internal predecessors, (46), 2 states have call successors, (9), 8 states have call predecessors, (9), 5 states have return successors, (7), 5 states have call predecessors, (7), 1 states have call successors, (7) Word has length 62 [2022-04-05 09:30:42,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 09:30:42,699 INFO L225 Difference]: With dead ends: 809 [2022-04-05 09:30:42,699 INFO L226 Difference]: Without dead ends: 787 [2022-04-05 09:30:42,699 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=54, Invalid=366, Unknown=0, NotChecked=0, Total=420 [2022-04-05 09:30:42,699 INFO L913 BasicCegarLoop]: 517 mSDtfsCounter, 1161 mSDsluCounter, 1745 mSDsCounter, 0 mSdLazyCounter, 5341 mSolverCounterSat, 406 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s 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, 2.1s IncrementalHoareTripleChecker+Time [2022-04-05 09:30:42,700 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1163 Valid, 2262 Invalid, 5747 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [406 Valid, 5341 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-04-05 09:30:42,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 787 states. [2022-04-05 09:30:42,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 787 to 787. [2022-04-05 09:30:42,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 787 states, 620 states have (on average 1.3096774193548386) internal successors, (812), 634 states have internal predecessors, (812), 96 states have call successors, (96), 51 states have call predecessors, (96), 70 states have return successors, (138), 108 states have call predecessors, (138), 90 states have call successors, (138) [2022-04-05 09:30:42,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 787 states to 787 states and 1046 transitions. [2022-04-05 09:30:42,763 INFO L78 Accepts]: Start accepts. Automaton has 787 states and 1046 transitions. Word has length 62 [2022-04-05 09:30:42,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 09:30:42,763 INFO L478 AbstractCegarLoop]: Abstraction has 787 states and 1046 transitions. [2022-04-05 09:30:42,763 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.4210526315789473) internal successors, (46), 9 states have internal predecessors, (46), 2 states have call successors, (9), 8 states have call predecessors, (9), 5 states have return successors, (7), 5 states have call predecessors, (7), 1 states have call successors, (7) [2022-04-05 09:30:42,764 INFO L276 IsEmpty]: Start isEmpty. Operand 787 states and 1046 transitions. [2022-04-05 09:30:42,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-04-05 09:30:42,765 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 09:30:42,765 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 09:30:42,765 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-04-05 09:30:42,765 INFO L403 AbstractCegarLoop]: === Iteration 40 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 09:30:42,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 09:30:42,765 INFO L85 PathProgramCache]: Analyzing trace with hash -1508171679, now seen corresponding path program 1 times [2022-04-05 09:30:42,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 09:30:42,765 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777366395] [2022-04-05 09:30:42,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 09:30:42,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 09:30:42,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:42,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 09:30:42,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:42,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 09:30:42,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:42,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-05 09:30:42,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:42,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-05 09:30:42,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:42,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-05 09:30:42,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:42,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-05 09:30:42,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:42,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-04-05 09:30:43,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:43,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-05 09:30:43,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:43,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-05 09:30:43,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 09:30:43,076 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777366395] [2022-04-05 09:30:43,076 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1777366395] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 09:30:43,076 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 09:30:43,076 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-04-05 09:30:43,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443288926] [2022-04-05 09:30:43,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 09:30:43,077 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-04-05 09:30:43,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 09:30:43,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-04-05 09:30:43,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=359, Unknown=0, NotChecked=0, Total=420 [2022-04-05 09:30:43,077 INFO L87 Difference]: Start difference. First operand 787 states and 1046 transitions. Second operand has 21 states, 20 states have (on average 2.4) internal successors, (48), 10 states have internal predecessors, (48), 4 states have call successors, (10), 10 states have call predecessors, (10), 4 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) [2022-04-05 09:30:45,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 09:30:45,435 INFO L93 Difference]: Finished difference Result 811 states and 1071 transitions. [2022-04-05 09:30:45,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-04-05 09:30:45,436 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 2.4) internal successors, (48), 10 states have internal predecessors, (48), 4 states have call successors, (10), 10 states have call predecessors, (10), 4 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) Word has length 66 [2022-04-05 09:30:45,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 09:30:45,437 INFO L225 Difference]: With dead ends: 811 [2022-04-05 09:30:45,437 INFO L226 Difference]: Without dead ends: 787 [2022-04-05 09:30:45,438 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=120, Invalid=692, Unknown=0, NotChecked=0, Total=812 [2022-04-05 09:30:45,438 INFO L913 BasicCegarLoop]: 513 mSDtfsCounter, 1250 mSDsluCounter, 1824 mSDsCounter, 0 mSdLazyCounter, 5141 mSolverCounterSat, 426 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1252 SdHoareTripleChecker+Valid, 2337 SdHoareTripleChecker+Invalid, 5567 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 426 IncrementalHoareTripleChecker+Valid, 5141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-04-05 09:30:45,438 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1252 Valid, 2337 Invalid, 5567 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [426 Valid, 5141 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-04-05 09:30:45,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 787 states. [2022-04-05 09:30:45,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 787 to 785. [2022-04-05 09:30:45,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 785 states, 619 states have (on average 1.308562197092084) internal successors, (810), 633 states have internal predecessors, (810), 95 states have call successors, (95), 51 states have call predecessors, (95), 70 states have return successors, (137), 107 states have call predecessors, (137), 89 states have call successors, (137) [2022-04-05 09:30:45,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 785 states to 785 states and 1042 transitions. [2022-04-05 09:30:45,495 INFO L78 Accepts]: Start accepts. Automaton has 785 states and 1042 transitions. Word has length 66 [2022-04-05 09:30:45,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 09:30:45,496 INFO L478 AbstractCegarLoop]: Abstraction has 785 states and 1042 transitions. [2022-04-05 09:30:45,496 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 2.4) internal successors, (48), 10 states have internal predecessors, (48), 4 states have call successors, (10), 10 states have call predecessors, (10), 4 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) [2022-04-05 09:30:45,496 INFO L276 IsEmpty]: Start isEmpty. Operand 785 states and 1042 transitions. [2022-04-05 09:30:45,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-04-05 09:30:45,497 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 09:30:45,497 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 09:30:45,497 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-04-05 09:30:45,498 INFO L403 AbstractCegarLoop]: === Iteration 41 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 09:30:45,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 09:30:45,498 INFO L85 PathProgramCache]: Analyzing trace with hash 136312337, now seen corresponding path program 1 times [2022-04-05 09:30:45,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 09:30:45,498 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1456314922] [2022-04-05 09:30:45,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 09:30:45,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 09:30:45,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:45,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 09:30:45,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:45,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 09:30:45,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:45,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-05 09:30:45,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:45,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-05 09:30:45,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:45,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-05 09:30:45,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:45,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-04-05 09:30:45,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:45,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-05 09:30:45,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:45,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-05 09:30:45,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 09:30:45,738 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1456314922] [2022-04-05 09:30:45,738 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1456314922] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 09:30:45,738 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 09:30:45,738 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-04-05 09:30:45,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402327971] [2022-04-05 09:30:45,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 09:30:45,738 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-04-05 09:30:45,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 09:30:45,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-04-05 09:30:45,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=327, Unknown=0, NotChecked=0, Total=380 [2022-04-05 09:30:45,739 INFO L87 Difference]: Start difference. First operand 785 states and 1042 transitions. Second operand has 20 states, 19 states have (on average 2.473684210526316) internal successors, (47), 10 states have internal predecessors, (47), 4 states have call successors, (9), 9 states have call predecessors, (9), 4 states have return successors, (7), 5 states have call predecessors, (7), 3 states have call successors, (7) [2022-04-05 09:30:47,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 09:30:47,614 INFO L93 Difference]: Finished difference Result 807 states and 1065 transitions. [2022-04-05 09:30:47,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-04-05 09:30:47,614 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 2.473684210526316) internal successors, (47), 10 states have internal predecessors, (47), 4 states have call successors, (9), 9 states have call predecessors, (9), 4 states have return successors, (7), 5 states have call predecessors, (7), 3 states have call successors, (7) Word has length 63 [2022-04-05 09:30:47,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 09:30:47,616 INFO L225 Difference]: With dead ends: 807 [2022-04-05 09:30:47,616 INFO L226 Difference]: Without dead ends: 783 [2022-04-05 09:30:47,617 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=99, Invalid=603, Unknown=0, NotChecked=0, Total=702 [2022-04-05 09:30:47,617 INFO L913 BasicCegarLoop]: 490 mSDtfsCounter, 909 mSDsluCounter, 1633 mSDsCounter, 0 mSdLazyCounter, 5234 mSolverCounterSat, 315 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 912 SdHoareTripleChecker+Valid, 2123 SdHoareTripleChecker+Invalid, 5549 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 315 IncrementalHoareTripleChecker+Valid, 5234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-04-05 09:30:47,617 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [912 Valid, 2123 Invalid, 5549 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [315 Valid, 5234 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-04-05 09:30:47,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 783 states. [2022-04-05 09:30:47,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 783 to 783. [2022-04-05 09:30:47,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 783 states, 618 states have (on average 1.307443365695793) internal successors, (808), 632 states have internal predecessors, (808), 94 states have call successors, (94), 51 states have call predecessors, (94), 70 states have return successors, (136), 106 states have call predecessors, (136), 88 states have call successors, (136) [2022-04-05 09:30:47,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 783 states to 783 states and 1038 transitions. [2022-04-05 09:30:47,675 INFO L78 Accepts]: Start accepts. Automaton has 783 states and 1038 transitions. Word has length 63 [2022-04-05 09:30:47,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 09:30:47,676 INFO L478 AbstractCegarLoop]: Abstraction has 783 states and 1038 transitions. [2022-04-05 09:30:47,676 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 2.473684210526316) internal successors, (47), 10 states have internal predecessors, (47), 4 states have call successors, (9), 9 states have call predecessors, (9), 4 states have return successors, (7), 5 states have call predecessors, (7), 3 states have call successors, (7) [2022-04-05 09:30:47,676 INFO L276 IsEmpty]: Start isEmpty. Operand 783 states and 1038 transitions. [2022-04-05 09:30:47,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-04-05 09:30:47,677 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 09:30:47,677 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 09:30:47,677 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2022-04-05 09:30:47,677 INFO L403 AbstractCegarLoop]: === Iteration 42 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 09:30:47,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 09:30:47,678 INFO L85 PathProgramCache]: Analyzing trace with hash 982595257, now seen corresponding path program 1 times [2022-04-05 09:30:47,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 09:30:47,678 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531773688] [2022-04-05 09:30:47,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 09:30:47,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 09:30:47,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:47,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 09:30:47,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:47,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 09:30:47,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:47,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-05 09:30:47,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:47,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-05 09:30:47,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:47,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-05 09:30:47,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:47,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-05 09:30:47,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:47,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-04-05 09:30:47,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:47,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-05 09:30:47,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 09:30:47,813 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531773688] [2022-04-05 09:30:47,813 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [531773688] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 09:30:47,813 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 09:30:47,813 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-04-05 09:30:47,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341186870] [2022-04-05 09:30:47,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 09:30:47,814 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-04-05 09:30:47,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 09:30:47,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-04-05 09:30:47,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-04-05 09:30:47,814 INFO L87 Difference]: Start difference. First operand 783 states and 1038 transitions. Second operand has 10 states, 10 states have (on average 4.7) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (9), 9 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-04-05 09:30:48,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 09:30:48,656 INFO L93 Difference]: Finished difference Result 1050 states and 1393 transitions. [2022-04-05 09:30:48,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-04-05 09:30:48,657 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.7) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (9), 9 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 63 [2022-04-05 09:30:48,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 09:30:48,658 INFO L225 Difference]: With dead ends: 1050 [2022-04-05 09:30:48,658 INFO L226 Difference]: Without dead ends: 724 [2022-04-05 09:30:48,659 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 [2022-04-05 09:30:48,659 INFO L913 BasicCegarLoop]: 483 mSDtfsCounter, 597 mSDsluCounter, 369 mSDsCounter, 0 mSdLazyCounter, 856 mSolverCounterSat, 198 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 599 SdHoareTripleChecker+Valid, 852 SdHoareTripleChecker+Invalid, 1054 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 198 IncrementalHoareTripleChecker+Valid, 856 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-04-05 09:30:48,660 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [599 Valid, 852 Invalid, 1054 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [198 Valid, 856 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-04-05 09:30:48,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 724 states. [2022-04-05 09:30:48,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 724 to 675. [2022-04-05 09:30:48,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 675 states, 533 states have (on average 1.2926829268292683) internal successors, (689), 547 states have internal predecessors, (689), 81 states have call successors, (81), 45 states have call predecessors, (81), 60 states have return successors, (100), 89 states have call predecessors, (100), 75 states have call successors, (100) [2022-04-05 09:30:48,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 675 states to 675 states and 870 transitions. [2022-04-05 09:30:48,720 INFO L78 Accepts]: Start accepts. Automaton has 675 states and 870 transitions. Word has length 63 [2022-04-05 09:30:48,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 09:30:48,720 INFO L478 AbstractCegarLoop]: Abstraction has 675 states and 870 transitions. [2022-04-05 09:30:48,720 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.7) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (9), 9 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-04-05 09:30:48,720 INFO L276 IsEmpty]: Start isEmpty. Operand 675 states and 870 transitions. [2022-04-05 09:30:48,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-04-05 09:30:48,722 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 09:30:48,722 INFO L499 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 09:30:48,722 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2022-04-05 09:30:48,722 INFO L403 AbstractCegarLoop]: === Iteration 43 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 09:30:48,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 09:30:48,722 INFO L85 PathProgramCache]: Analyzing trace with hash 274863522, now seen corresponding path program 1 times [2022-04-05 09:30:48,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 09:30:48,724 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66805259] [2022-04-05 09:30:48,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 09:30:48,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 09:30:48,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:48,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 09:30:48,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:48,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 09:30:48,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:48,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-05 09:30:48,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:48,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-04-05 09:30:48,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:48,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-04-05 09:30:48,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:48,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-05 09:30:48,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:48,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-05 09:30:48,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:48,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-05 09:30:48,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:48,858 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-05 09:30:48,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 09:30:48,858 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66805259] [2022-04-05 09:30:48,858 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [66805259] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 09:30:48,858 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [365053562] [2022-04-05 09:30:48,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 09:30:48,858 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 09:30:48,858 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 09:30:48,859 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-05 09:30:48,860 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-04-05 09:30:49,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:49,024 INFO L263 TraceCheckSpWp]: Trace formula consists of 852 conjuncts, 7 conjunts are in the unsatisfiable core [2022-04-05 09:30:49,028 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 09:30:49,094 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-05 09:30:49,094 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-05 09:30:49,094 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [365053562] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 09:30:49,094 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-05 09:30:49,094 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 10 [2022-04-05 09:30:49,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153301030] [2022-04-05 09:30:49,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 09:30:49,094 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-05 09:30:49,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 09:30:49,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-05 09:30:49,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2022-04-05 09:30:49,095 INFO L87 Difference]: Start difference. First operand 675 states and 870 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 3 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-04-05 09:30:49,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 09:30:49,190 INFO L93 Difference]: Finished difference Result 812 states and 1036 transitions. [2022-04-05 09:30:49,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-05 09:30:49,190 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 3 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 80 [2022-04-05 09:30:49,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 09:30:49,192 INFO L225 Difference]: With dead ends: 812 [2022-04-05 09:30:49,192 INFO L226 Difference]: Without dead ends: 729 [2022-04-05 09:30:49,193 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 90 SyntacticMatches, 3 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2022-04-05 09:30:49,200 INFO L913 BasicCegarLoop]: 593 mSDtfsCounter, 113 mSDsluCounter, 504 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 1097 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-05 09:30:49,201 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [113 Valid, 1097 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-05 09:30:49,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 729 states. [2022-04-05 09:30:49,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 729 to 706. [2022-04-05 09:30:49,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 706 states, 558 states have (on average 1.2939068100358424) internal successors, (722), 571 states have internal predecessors, (722), 83 states have call successors, (83), 48 states have call predecessors, (83), 64 states have return successors, (104), 93 states have call predecessors, (104), 78 states have call successors, (104) [2022-04-05 09:30:49,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 706 states to 706 states and 909 transitions. [2022-04-05 09:30:49,287 INFO L78 Accepts]: Start accepts. Automaton has 706 states and 909 transitions. Word has length 80 [2022-04-05 09:30:49,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 09:30:49,288 INFO L478 AbstractCegarLoop]: Abstraction has 706 states and 909 transitions. [2022-04-05 09:30:49,289 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 3 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-04-05 09:30:49,289 INFO L276 IsEmpty]: Start isEmpty. Operand 706 states and 909 transitions. [2022-04-05 09:30:49,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-04-05 09:30:49,290 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 09:30:49,290 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 09:30:49,308 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-04-05 09:30:49,507 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable42 [2022-04-05 09:30:49,507 INFO L403 AbstractCegarLoop]: === Iteration 44 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 09:30:49,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 09:30:49,507 INFO L85 PathProgramCache]: Analyzing trace with hash 1864492088, now seen corresponding path program 1 times [2022-04-05 09:30:49,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 09:30:49,508 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75985394] [2022-04-05 09:30:49,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 09:30:49,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 09:30:49,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:49,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 09:30:49,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:49,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 09:30:49,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:49,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-05 09:30:49,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:49,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-04-05 09:30:49,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:49,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-05 09:30:49,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:49,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-05 09:30:49,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:49,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-05 09:30:49,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:49,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-05 09:30:49,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:49,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-05 09:30:49,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 09:30:49,621 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75985394] [2022-04-05 09:30:49,621 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [75985394] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 09:30:49,621 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 09:30:49,621 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-04-05 09:30:49,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265410441] [2022-04-05 09:30:49,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 09:30:49,621 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-04-05 09:30:49,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 09:30:49,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-04-05 09:30:49,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-04-05 09:30:49,622 INFO L87 Difference]: Start difference. First operand 706 states and 909 transitions. Second operand has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (12), 8 states have call predecessors, (12), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2022-04-05 09:30:50,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 09:30:50,487 INFO L93 Difference]: Finished difference Result 826 states and 1065 transitions. [2022-04-05 09:30:50,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-04-05 09:30:50,488 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (12), 8 states have call predecessors, (12), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) Word has length 66 [2022-04-05 09:30:50,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 09:30:50,490 INFO L225 Difference]: With dead ends: 826 [2022-04-05 09:30:50,490 INFO L226 Difference]: Without dead ends: 706 [2022-04-05 09:30:50,490 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2022-04-05 09:30:50,490 INFO L913 BasicCegarLoop]: 459 mSDtfsCounter, 1152 mSDsluCounter, 427 mSDsCounter, 0 mSdLazyCounter, 883 mSolverCounterSat, 389 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s 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, 0.8s IncrementalHoareTripleChecker+Time [2022-04-05 09:30:50,491 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1157 Valid, 886 Invalid, 1272 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [389 Valid, 883 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-04-05 09:30:50,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 706 states. [2022-04-05 09:30:50,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 706 to 706. [2022-04-05 09:30:50,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 706 states, 558 states have (on average 1.2885304659498207) internal successors, (719), 571 states have internal predecessors, (719), 83 states have call successors, (83), 48 states have call predecessors, (83), 64 states have return successors, (104), 93 states have call predecessors, (104), 78 states have call successors, (104) [2022-04-05 09:30:50,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 706 states to 706 states and 906 transitions. [2022-04-05 09:30:50,544 INFO L78 Accepts]: Start accepts. Automaton has 706 states and 906 transitions. Word has length 66 [2022-04-05 09:30:50,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 09:30:50,544 INFO L478 AbstractCegarLoop]: Abstraction has 706 states and 906 transitions. [2022-04-05 09:30:50,544 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (12), 8 states have call predecessors, (12), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2022-04-05 09:30:50,544 INFO L276 IsEmpty]: Start isEmpty. Operand 706 states and 906 transitions. [2022-04-05 09:30:50,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-04-05 09:30:50,553 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 09:30:50,553 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 09:30:50,554 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2022-04-05 09:30:50,554 INFO L403 AbstractCegarLoop]: === Iteration 45 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 09:30:50,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 09:30:50,554 INFO L85 PathProgramCache]: Analyzing trace with hash 531525074, now seen corresponding path program 1 times [2022-04-05 09:30:50,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 09:30:50,554 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723576855] [2022-04-05 09:30:50,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 09:30:50,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 09:30:50,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:50,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 09:30:50,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:50,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 09:30:50,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:50,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-05 09:30:50,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:50,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-05 09:30:50,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:50,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-05 09:30:50,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:50,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-05 09:30:50,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:50,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-05 09:30:50,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:50,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-05 09:30:50,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 09:30:50,710 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723576855] [2022-04-05 09:30:50,710 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [723576855] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 09:30:50,710 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 09:30:50,710 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-04-05 09:30:50,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050186147] [2022-04-05 09:30:50,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 09:30:50,710 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-04-05 09:30:50,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 09:30:50,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-04-05 09:30:50,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2022-04-05 09:30:50,711 INFO L87 Difference]: Start difference. First operand 706 states and 906 transitions. Second operand has 12 states, 12 states have (on average 4.083333333333333) internal successors, (49), 5 states have internal predecessors, (49), 3 states have call successors, (9), 9 states have call predecessors, (9), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-04-05 09:30:51,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 09:30:51,913 INFO L93 Difference]: Finished difference Result 770 states and 982 transitions. [2022-04-05 09:30:51,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-04-05 09:30:51,913 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.083333333333333) internal successors, (49), 5 states have internal predecessors, (49), 3 states have call successors, (9), 9 states have call predecessors, (9), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 65 [2022-04-05 09:30:51,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 09:30:51,915 INFO L225 Difference]: With dead ends: 770 [2022-04-05 09:30:51,915 INFO L226 Difference]: Without dead ends: 737 [2022-04-05 09:30:51,915 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=138, Invalid=282, Unknown=0, NotChecked=0, Total=420 [2022-04-05 09:30:51,916 INFO L913 BasicCegarLoop]: 467 mSDtfsCounter, 1026 mSDsluCounter, 545 mSDsCounter, 0 mSdLazyCounter, 1225 mSolverCounterSat, 321 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1028 SdHoareTripleChecker+Valid, 1012 SdHoareTripleChecker+Invalid, 1546 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 321 IncrementalHoareTripleChecker+Valid, 1225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-04-05 09:30:51,916 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1028 Valid, 1012 Invalid, 1546 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [321 Valid, 1225 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-04-05 09:30:51,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 737 states. [2022-04-05 09:30:51,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 737 to 712. [2022-04-05 09:30:51,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 712 states, 563 states have (on average 1.2877442273534636) internal successors, (725), 576 states have internal predecessors, (725), 84 states have call successors, (84), 48 states have call predecessors, (84), 64 states have return successors, (105), 94 states have call predecessors, (105), 79 states have call successors, (105) [2022-04-05 09:30:51,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 712 states to 712 states and 914 transitions. [2022-04-05 09:30:51,972 INFO L78 Accepts]: Start accepts. Automaton has 712 states and 914 transitions. Word has length 65 [2022-04-05 09:30:51,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 09:30:51,972 INFO L478 AbstractCegarLoop]: Abstraction has 712 states and 914 transitions. [2022-04-05 09:30:51,972 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.083333333333333) internal successors, (49), 5 states have internal predecessors, (49), 3 states have call successors, (9), 9 states have call predecessors, (9), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-04-05 09:30:51,972 INFO L276 IsEmpty]: Start isEmpty. Operand 712 states and 914 transitions. [2022-04-05 09:30:51,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-04-05 09:30:51,973 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 09:30:51,973 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 09:30:51,973 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2022-04-05 09:30:51,973 INFO L403 AbstractCegarLoop]: === Iteration 46 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 09:30:51,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 09:30:51,974 INFO L85 PathProgramCache]: Analyzing trace with hash -925827221, now seen corresponding path program 1 times [2022-04-05 09:30:51,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 09:30:51,974 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218691338] [2022-04-05 09:30:51,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 09:30:51,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 09:30:51,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:52,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 09:30:52,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:52,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 09:30:52,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:52,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-05 09:30:52,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:52,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-05 09:30:52,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:52,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-05 09:30:52,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:52,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-04-05 09:30:52,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:52,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-04-05 09:30:52,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:52,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-05 09:30:52,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 09:30:52,124 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218691338] [2022-04-05 09:30:52,124 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1218691338] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 09:30:52,124 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 09:30:52,124 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-04-05 09:30:52,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638623217] [2022-04-05 09:30:52,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 09:30:52,124 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-04-05 09:30:52,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 09:30:52,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-04-05 09:30:52,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2022-04-05 09:30:52,125 INFO L87 Difference]: Start difference. First operand 712 states and 914 transitions. Second operand has 12 states, 12 states have (on average 4.166666666666667) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-04-05 09:30:53,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 09:30:53,288 INFO L93 Difference]: Finished difference Result 768 states and 975 transitions. [2022-04-05 09:30:53,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-04-05 09:30:53,289 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.166666666666667) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 66 [2022-04-05 09:30:53,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 09:30:53,291 INFO L225 Difference]: With dead ends: 768 [2022-04-05 09:30:53,291 INFO L226 Difference]: Without dead ends: 714 [2022-04-05 09:30:53,291 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=76, Invalid=164, Unknown=0, NotChecked=0, Total=240 [2022-04-05 09:30:53,292 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, 1.0s IncrementalHoareTripleChecker+Time [2022-04-05 09:30:53,292 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [875 Valid, 1011 Invalid, 1843 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [292 Valid, 1551 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-04-05 09:30:53,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 714 states. [2022-04-05 09:30:53,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 714 to 712. [2022-04-05 09:30:53,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 712 states, 563 states have (on average 1.2841918294849024) internal successors, (723), 576 states have internal predecessors, (723), 84 states have call successors, (84), 48 states have call predecessors, (84), 64 states have return successors, (105), 94 states have call predecessors, (105), 79 states have call successors, (105) [2022-04-05 09:30:53,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 712 states to 712 states and 912 transitions. [2022-04-05 09:30:53,347 INFO L78 Accepts]: Start accepts. Automaton has 712 states and 912 transitions. Word has length 66 [2022-04-05 09:30:53,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 09:30:53,347 INFO L478 AbstractCegarLoop]: Abstraction has 712 states and 912 transitions. [2022-04-05 09:30:53,347 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.166666666666667) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-04-05 09:30:53,347 INFO L276 IsEmpty]: Start isEmpty. Operand 712 states and 912 transitions. [2022-04-05 09:30:53,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-04-05 09:30:53,348 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 09:30:53,348 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 09:30:53,348 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2022-04-05 09:30:53,348 INFO L403 AbstractCegarLoop]: === Iteration 47 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 09:30:53,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 09:30:53,349 INFO L85 PathProgramCache]: Analyzing trace with hash -575027284, now seen corresponding path program 1 times [2022-04-05 09:30:53,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 09:30:53,349 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265227511] [2022-04-05 09:30:53,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 09:30:53,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 09:30:53,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:53,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 09:30:53,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:53,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 09:30:53,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:53,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-05 09:30:53,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:53,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-05 09:30:53,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:53,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-05 09:30:53,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:53,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-04-05 09:30:53,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:53,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-04-05 09:30:53,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:53,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-05 09:30:53,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 09:30:53,552 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265227511] [2022-04-05 09:30:53,552 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1265227511] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 09:30:53,552 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 09:30:53,553 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-04-05 09:30:53,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987847506] [2022-04-05 09:30:53,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 09:30:53,553 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-04-05 09:30:53,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 09:30:53,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-04-05 09:30:53,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2022-04-05 09:30:53,554 INFO L87 Difference]: Start difference. First operand 712 states and 912 transitions. Second operand has 16 states, 16 states have (on average 3.125) internal successors, (50), 7 states have internal predecessors, (50), 3 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 4 states have call predecessors, (7), 2 states have call successors, (7) [2022-04-05 09:30:55,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 09:30:55,089 INFO L93 Difference]: Finished difference Result 739 states and 942 transitions. [2022-04-05 09:30:55,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-04-05 09:30:55,089 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.125) internal successors, (50), 7 states have internal predecessors, (50), 3 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 4 states have call predecessors, (7), 2 states have call successors, (7) Word has length 66 [2022-04-05 09:30:55,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 09:30:55,091 INFO L225 Difference]: With dead ends: 739 [2022-04-05 09:30:55,091 INFO L226 Difference]: Without dead ends: 681 [2022-04-05 09:30:55,091 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2022-04-05 09:30:55,091 INFO L913 BasicCegarLoop]: 476 mSDtfsCounter, 614 mSDsluCounter, 1300 mSDsCounter, 0 mSdLazyCounter, 3598 mSolverCounterSat, 215 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 617 SdHoareTripleChecker+Valid, 1776 SdHoareTripleChecker+Invalid, 3813 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 215 IncrementalHoareTripleChecker+Valid, 3598 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-04-05 09:30:55,092 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [617 Valid, 1776 Invalid, 3813 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [215 Valid, 3598 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-04-05 09:30:55,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 681 states. [2022-04-05 09:30:55,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 681 to 675. [2022-04-05 09:30:55,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 675 states, 533 states have (on average 1.2701688555347093) internal successors, (677), 546 states have internal predecessors, (677), 77 states have call successors, (77), 48 states have call predecessors, (77), 64 states have return successors, (97), 87 states have call predecessors, (97), 72 states have call successors, (97) [2022-04-05 09:30:55,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 675 states to 675 states and 851 transitions. [2022-04-05 09:30:55,144 INFO L78 Accepts]: Start accepts. Automaton has 675 states and 851 transitions. Word has length 66 [2022-04-05 09:30:55,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 09:30:55,144 INFO L478 AbstractCegarLoop]: Abstraction has 675 states and 851 transitions. [2022-04-05 09:30:55,144 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.125) internal successors, (50), 7 states have internal predecessors, (50), 3 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 4 states have call predecessors, (7), 2 states have call successors, (7) [2022-04-05 09:30:55,144 INFO L276 IsEmpty]: Start isEmpty. Operand 675 states and 851 transitions. [2022-04-05 09:30:55,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-04-05 09:30:55,145 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 09:30:55,145 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 09:30:55,145 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2022-04-05 09:30:55,145 INFO L403 AbstractCegarLoop]: === Iteration 48 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 09:30:55,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 09:30:55,145 INFO L85 PathProgramCache]: Analyzing trace with hash -329926322, now seen corresponding path program 1 times [2022-04-05 09:30:55,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 09:30:55,146 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960219819] [2022-04-05 09:30:55,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 09:30:55,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 09:30:55,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:55,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 09:30:55,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:55,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 09:30:55,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:55,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-05 09:30:55,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:55,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-05 09:30:55,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:55,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-05 09:30:55,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:55,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-04-05 09:30:55,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:55,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-05 09:30:55,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:55,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-05 09:30:55,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 09:30:55,292 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960219819] [2022-04-05 09:30:55,292 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [960219819] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 09:30:55,292 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 09:30:55,292 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-04-05 09:30:55,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963710270] [2022-04-05 09:30:55,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 09:30:55,293 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-04-05 09:30:55,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 09:30:55,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-04-05 09:30:55,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2022-04-05 09:30:55,293 INFO L87 Difference]: Start difference. First operand 675 states and 851 transitions. Second operand has 12 states, 12 states have (on average 4.25) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-04-05 09:30:56,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 09:30:56,110 INFO L93 Difference]: Finished difference Result 709 states and 886 transitions. [2022-04-05 09:30:56,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-04-05 09:30:56,110 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.25) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 67 [2022-04-05 09:30:56,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 09:30:56,112 INFO L225 Difference]: With dead ends: 709 [2022-04-05 09:30:56,112 INFO L226 Difference]: Without dead ends: 670 [2022-04-05 09:30:56,113 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2022-04-05 09:30:56,113 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, 0.7s IncrementalHoareTripleChecker+Time [2022-04-05 09:30:56,113 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [531 Valid, 950 Invalid, 1558 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [182 Valid, 1376 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-04-05 09:30:56,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 670 states. [2022-04-05 09:30:56,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 670 to 670. [2022-04-05 09:30:56,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 670 states, 529 states have (on average 1.270321361058601) internal successors, (672), 542 states have internal predecessors, (672), 76 states have call successors, (76), 48 states have call predecessors, (76), 64 states have return successors, (96), 86 states have call predecessors, (96), 71 states have call successors, (96) [2022-04-05 09:30:56,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 670 states to 670 states and 844 transitions. [2022-04-05 09:30:56,164 INFO L78 Accepts]: Start accepts. Automaton has 670 states and 844 transitions. Word has length 67 [2022-04-05 09:30:56,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 09:30:56,164 INFO L478 AbstractCegarLoop]: Abstraction has 670 states and 844 transitions. [2022-04-05 09:30:56,164 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.25) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-04-05 09:30:56,164 INFO L276 IsEmpty]: Start isEmpty. Operand 670 states and 844 transitions. [2022-04-05 09:30:56,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-04-05 09:30:56,165 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 09:30:56,165 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 09:30:56,165 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2022-04-05 09:30:56,165 INFO L403 AbstractCegarLoop]: === Iteration 49 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 09:30:56,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 09:30:56,165 INFO L85 PathProgramCache]: Analyzing trace with hash 872575031, now seen corresponding path program 1 times [2022-04-05 09:30:56,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 09:30:56,166 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572161552] [2022-04-05 09:30:56,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 09:30:56,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 09:30:56,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:56,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 09:30:56,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:56,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 09:30:56,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:56,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-05 09:30:56,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:56,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-05 09:30:56,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:56,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-04-05 09:30:56,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:56,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-04-05 09:30:56,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:56,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-05 09:30:56,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:56,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-05 09:30:56,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 09:30:56,315 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572161552] [2022-04-05 09:30:56,315 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [572161552] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 09:30:56,315 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 09:30:56,315 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-04-05 09:30:56,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191993853] [2022-04-05 09:30:56,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 09:30:56,316 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-04-05 09:30:56,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 09:30:56,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-04-05 09:30:56,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-04-05 09:30:56,316 INFO L87 Difference]: Start difference. First operand 670 states and 844 transitions. Second operand has 10 states, 10 states have (on average 5.1) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (9), 9 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2022-04-05 09:30:57,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 09:30:57,001 INFO L93 Difference]: Finished difference Result 777 states and 975 transitions. [2022-04-05 09:30:57,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-04-05 09:30:57,002 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.1) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (9), 9 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) Word has length 67 [2022-04-05 09:30:57,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 09:30:57,003 INFO L225 Difference]: With dead ends: 777 [2022-04-05 09:30:57,003 INFO L226 Difference]: Without dead ends: 769 [2022-04-05 09:30:57,004 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 10 SyntacticMatches, 3 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=58, Invalid=98, Unknown=0, NotChecked=0, Total=156 [2022-04-05 09:30:57,005 INFO L913 BasicCegarLoop]: 403 mSDtfsCounter, 1204 mSDsluCounter, 333 mSDsCounter, 0 mSdLazyCounter, 725 mSolverCounterSat, 420 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1213 SdHoareTripleChecker+Valid, 736 SdHoareTripleChecker+Invalid, 1145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 420 IncrementalHoareTripleChecker+Valid, 725 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-04-05 09:30:57,006 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1213 Valid, 736 Invalid, 1145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [420 Valid, 725 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-04-05 09:30:57,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 769 states. [2022-04-05 09:30:57,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 769 to 712. [2022-04-05 09:30:57,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 712 states, 561 states have (on average 1.2638146167557933) internal successors, (709), 576 states have internal predecessors, (709), 78 states have call successors, (78), 50 states have call predecessors, (78), 72 states have return successors, (104), 94 states have call predecessors, (104), 73 states have call successors, (104) [2022-04-05 09:30:57,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 712 states to 712 states and 891 transitions. [2022-04-05 09:30:57,058 INFO L78 Accepts]: Start accepts. Automaton has 712 states and 891 transitions. Word has length 67 [2022-04-05 09:30:57,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 09:30:57,059 INFO L478 AbstractCegarLoop]: Abstraction has 712 states and 891 transitions. [2022-04-05 09:30:57,059 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.1) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (9), 9 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2022-04-05 09:30:57,059 INFO L276 IsEmpty]: Start isEmpty. Operand 712 states and 891 transitions. [2022-04-05 09:30:57,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-04-05 09:30:57,060 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 09:30:57,060 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 09:30:57,060 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2022-04-05 09:30:57,060 INFO L403 AbstractCegarLoop]: === Iteration 50 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 09:30:57,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 09:30:57,060 INFO L85 PathProgramCache]: Analyzing trace with hash 1310592370, now seen corresponding path program 1 times [2022-04-05 09:30:57,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 09:30:57,060 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927127162] [2022-04-05 09:30:57,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 09:30:57,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 09:30:57,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:57,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 09:30:57,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:57,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 09:30:57,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:57,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-05 09:30:57,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:57,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-05 09:30:57,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:57,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-04-05 09:30:57,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:57,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-04-05 09:30:57,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:57,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-05 09:30:57,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:57,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-05 09:30:57,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 09:30:57,203 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927127162] [2022-04-05 09:30:57,203 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1927127162] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 09:30:57,203 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 09:30:57,203 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-04-05 09:30:57,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869733395] [2022-04-05 09:30:57,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 09:30:57,204 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-04-05 09:30:57,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 09:30:57,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-04-05 09:30:57,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2022-04-05 09:30:57,205 INFO L87 Difference]: Start difference. First operand 712 states and 891 transitions. Second operand has 12 states, 12 states have (on average 4.333333333333333) internal successors, (52), 5 states have internal predecessors, (52), 3 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 4 states have call predecessors, (7), 2 states have call successors, (7) [2022-04-05 09:30:58,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 09:30:58,195 INFO L93 Difference]: Finished difference Result 773 states and 969 transitions. [2022-04-05 09:30:58,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-04-05 09:30:58,196 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.333333333333333) internal successors, (52), 5 states have internal predecessors, (52), 3 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 4 states have call predecessors, (7), 2 states have call successors, (7) Word has length 68 [2022-04-05 09:30:58,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 09:30:58,197 INFO L225 Difference]: With dead ends: 773 [2022-04-05 09:30:58,197 INFO L226 Difference]: Without dead ends: 767 [2022-04-05 09:30:58,198 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=113, Invalid=267, Unknown=0, NotChecked=0, Total=380 [2022-04-05 09:30:58,198 INFO L913 BasicCegarLoop]: 419 mSDtfsCounter, 1496 mSDsluCounter, 400 mSDsCounter, 0 mSdLazyCounter, 1418 mSolverCounterSat, 491 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1503 SdHoareTripleChecker+Valid, 819 SdHoareTripleChecker+Invalid, 1909 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 491 IncrementalHoareTripleChecker+Valid, 1418 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-04-05 09:30:58,199 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1503 Valid, 819 Invalid, 1909 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [491 Valid, 1418 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-04-05 09:30:58,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 767 states. [2022-04-05 09:30:58,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 767 to 712. [2022-04-05 09:30:58,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 712 states, 561 states have (on average 1.2620320855614973) internal successors, (708), 576 states have internal predecessors, (708), 78 states have call successors, (78), 50 states have call predecessors, (78), 72 states have return successors, (104), 94 states have call predecessors, (104), 73 states have call successors, (104) [2022-04-05 09:30:58,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 712 states to 712 states and 890 transitions. [2022-04-05 09:30:58,262 INFO L78 Accepts]: Start accepts. Automaton has 712 states and 890 transitions. Word has length 68 [2022-04-05 09:30:58,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 09:30:58,263 INFO L478 AbstractCegarLoop]: Abstraction has 712 states and 890 transitions. [2022-04-05 09:30:58,263 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.333333333333333) internal successors, (52), 5 states have internal predecessors, (52), 3 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 4 states have call predecessors, (7), 2 states have call successors, (7) [2022-04-05 09:30:58,263 INFO L276 IsEmpty]: Start isEmpty. Operand 712 states and 890 transitions. [2022-04-05 09:30:58,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-04-05 09:30:58,265 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 09:30:58,265 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 09:30:58,265 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2022-04-05 09:30:58,265 INFO L403 AbstractCegarLoop]: === Iteration 51 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 09:30:58,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 09:30:58,265 INFO L85 PathProgramCache]: Analyzing trace with hash 1966008401, now seen corresponding path program 1 times [2022-04-05 09:30:58,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 09:30:58,265 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316173104] [2022-04-05 09:30:58,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 09:30:58,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 09:30:58,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:58,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 09:30:58,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:58,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 09:30:58,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:58,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-05 09:30:58,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:58,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-05 09:30:58,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:58,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-05 09:30:58,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:58,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-04-05 09:30:58,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:58,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-04-05 09:30:58,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:58,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-05 09:30:58,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:58,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-05 09:30:58,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 09:30:58,557 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316173104] [2022-04-05 09:30:58,557 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [316173104] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 09:30:58,557 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 09:30:58,557 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2022-04-05 09:30:58,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907056105] [2022-04-05 09:30:58,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 09:30:58,557 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-04-05 09:30:58,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 09:30:58,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-04-05 09:30:58,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=441, Unknown=0, NotChecked=0, Total=506 [2022-04-05 09:30:58,558 INFO L87 Difference]: Start difference. First operand 712 states and 890 transitions. Second operand has 23 states, 22 states have (on average 2.3636363636363638) internal successors, (52), 11 states have internal predecessors, (52), 4 states have call successors, (10), 10 states have call predecessors, (10), 5 states have return successors, (8), 6 states have call predecessors, (8), 3 states have call successors, (8) [2022-04-05 09:31:00,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 09:31:00,461 INFO L93 Difference]: Finished difference Result 736 states and 916 transitions. [2022-04-05 09:31:00,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-04-05 09:31:00,462 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 2.3636363636363638) internal successors, (52), 11 states have internal predecessors, (52), 4 states have call successors, (10), 10 states have call predecessors, (10), 5 states have return successors, (8), 6 states have call predecessors, (8), 3 states have call successors, (8) Word has length 70 [2022-04-05 09:31:00,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 09:31:00,463 INFO L225 Difference]: With dead ends: 736 [2022-04-05 09:31:00,463 INFO L226 Difference]: Without dead ends: 709 [2022-04-05 09:31:00,463 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=148, Invalid=908, Unknown=0, NotChecked=0, Total=1056 [2022-04-05 09:31:00,464 INFO L913 BasicCegarLoop]: 428 mSDtfsCounter, 1446 mSDsluCounter, 2102 mSDsCounter, 0 mSdLazyCounter, 4951 mSolverCounterSat, 512 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1448 SdHoareTripleChecker+Valid, 2530 SdHoareTripleChecker+Invalid, 5463 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 512 IncrementalHoareTripleChecker+Valid, 4951 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-04-05 09:31:00,464 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1448 Valid, 2530 Invalid, 5463 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [512 Valid, 4951 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-04-05 09:31:00,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 709 states. [2022-04-05 09:31:00,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 709 to 709. [2022-04-05 09:31:00,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 709 states, 559 states have (on average 1.2611806797853309) internal successors, (705), 574 states have internal predecessors, (705), 77 states have call successors, (77), 50 states have call predecessors, (77), 72 states have return successors, (103), 93 states have call predecessors, (103), 72 states have call successors, (103) [2022-04-05 09:31:00,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 709 states to 709 states and 885 transitions. [2022-04-05 09:31:00,518 INFO L78 Accepts]: Start accepts. Automaton has 709 states and 885 transitions. Word has length 70 [2022-04-05 09:31:00,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 09:31:00,518 INFO L478 AbstractCegarLoop]: Abstraction has 709 states and 885 transitions. [2022-04-05 09:31:00,518 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 2.3636363636363638) internal successors, (52), 11 states have internal predecessors, (52), 4 states have call successors, (10), 10 states have call predecessors, (10), 5 states have return successors, (8), 6 states have call predecessors, (8), 3 states have call successors, (8) [2022-04-05 09:31:00,518 INFO L276 IsEmpty]: Start isEmpty. Operand 709 states and 885 transitions. [2022-04-05 09:31:00,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-04-05 09:31:00,519 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 09:31:00,519 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 09:31:00,519 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2022-04-05 09:31:00,519 INFO L403 AbstractCegarLoop]: === Iteration 52 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 09:31:00,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 09:31:00,519 INFO L85 PathProgramCache]: Analyzing trace with hash -771243238, now seen corresponding path program 1 times [2022-04-05 09:31:00,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 09:31:00,520 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726673235] [2022-04-05 09:31:00,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 09:31:00,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 09:31:00,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:00,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 09:31:00,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:00,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 09:31:00,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:00,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-05 09:31:00,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:00,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-05 09:31:00,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:00,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-05 09:31:00,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:00,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-04-05 09:31:00,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:00,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-05 09:31:00,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:00,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-05 09:31:00,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 09:31:00,849 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726673235] [2022-04-05 09:31:00,849 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [726673235] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 09:31:00,849 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 09:31:00,849 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-04-05 09:31:00,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857270419] [2022-04-05 09:31:00,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 09:31:00,849 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-04-05 09:31:00,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 09:31:00,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-04-05 09:31:00,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=296, Unknown=0, NotChecked=0, Total=342 [2022-04-05 09:31:00,850 INFO L87 Difference]: Start difference. First operand 709 states and 885 transitions. Second operand has 19 states, 19 states have (on average 2.9473684210526314) internal successors, (56), 9 states have internal predecessors, (56), 2 states have call successors, (9), 8 states have call predecessors, (9), 5 states have return successors, (7), 5 states have call predecessors, (7), 1 states have call successors, (7) [2022-04-05 09:31:02,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 09:31:02,390 INFO L93 Difference]: Finished difference Result 729 states and 906 transitions. [2022-04-05 09:31:02,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-04-05 09:31:02,391 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.9473684210526314) internal successors, (56), 9 states have internal predecessors, (56), 2 states have call successors, (9), 8 states have call predecessors, (9), 5 states have return successors, (7), 5 states have call predecessors, (7), 1 states have call successors, (7) Word has length 72 [2022-04-05 09:31:02,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 09:31:02,392 INFO L225 Difference]: With dead ends: 729 [2022-04-05 09:31:02,392 INFO L226 Difference]: Without dead ends: 707 [2022-04-05 09:31:02,392 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=54, Invalid=366, Unknown=0, NotChecked=0, Total=420 [2022-04-05 09:31:02,393 INFO L913 BasicCegarLoop]: 424 mSDtfsCounter, 239 mSDsluCounter, 1606 mSDsCounter, 0 mSdLazyCounter, 4495 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 241 SdHoareTripleChecker+Valid, 2030 SdHoareTripleChecker+Invalid, 4582 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 4495 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-04-05 09:31:02,393 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [241 Valid, 2030 Invalid, 4582 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 4495 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-04-05 09:31:02,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 707 states. [2022-04-05 09:31:02,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 707 to 707. [2022-04-05 09:31:02,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 707 states, 558 states have (on average 1.2598566308243728) internal successors, (703), 573 states have internal predecessors, (703), 76 states have call successors, (76), 50 states have call predecessors, (76), 72 states have return successors, (102), 92 states have call predecessors, (102), 71 states have call successors, (102) [2022-04-05 09:31:02,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 707 states to 707 states and 881 transitions. [2022-04-05 09:31:02,447 INFO L78 Accepts]: Start accepts. Automaton has 707 states and 881 transitions. Word has length 72 [2022-04-05 09:31:02,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 09:31:02,448 INFO L478 AbstractCegarLoop]: Abstraction has 707 states and 881 transitions. [2022-04-05 09:31:02,448 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.9473684210526314) internal successors, (56), 9 states have internal predecessors, (56), 2 states have call successors, (9), 8 states have call predecessors, (9), 5 states have return successors, (7), 5 states have call predecessors, (7), 1 states have call successors, (7) [2022-04-05 09:31:02,448 INFO L276 IsEmpty]: Start isEmpty. Operand 707 states and 881 transitions. [2022-04-05 09:31:02,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-04-05 09:31:02,449 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 09:31:02,449 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 09:31:02,449 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2022-04-05 09:31:02,449 INFO L403 AbstractCegarLoop]: === Iteration 53 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 09:31:02,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 09:31:02,449 INFO L85 PathProgramCache]: Analyzing trace with hash 667549759, now seen corresponding path program 1 times [2022-04-05 09:31:02,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 09:31:02,449 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727919533] [2022-04-05 09:31:02,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 09:31:02,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 09:31:02,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:02,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 09:31:02,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:02,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 09:31:02,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:02,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-05 09:31:02,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:02,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-05 09:31:02,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:02,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-05 09:31:02,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:02,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-04-05 09:31:02,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:02,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-05 09:31:02,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:02,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-05 09:31:02,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 09:31:02,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727919533] [2022-04-05 09:31:02,731 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [727919533] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 09:31:02,731 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 09:31:02,731 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-04-05 09:31:02,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528690991] [2022-04-05 09:31:02,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 09:31:02,731 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-04-05 09:31:02,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 09:31:02,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-04-05 09:31:02,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=296, Unknown=0, NotChecked=0, Total=342 [2022-04-05 09:31:02,732 INFO L87 Difference]: Start difference. First operand 707 states and 881 transitions. Second operand has 19 states, 19 states have (on average 2.789473684210526) internal successors, (53), 9 states have internal predecessors, (53), 2 states have call successors, (9), 8 states have call predecessors, (9), 5 states have return successors, (7), 5 states have call predecessors, (7), 1 states have call successors, (7) [2022-04-05 09:31:04,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 09:31:04,340 INFO L93 Difference]: Finished difference Result 724 states and 899 transitions. [2022-04-05 09:31:04,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-04-05 09:31:04,340 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.789473684210526) internal successors, (53), 9 states have internal predecessors, (53), 2 states have call successors, (9), 8 states have call predecessors, (9), 5 states have return successors, (7), 5 states have call predecessors, (7), 1 states have call successors, (7) Word has length 69 [2022-04-05 09:31:04,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 09:31:04,342 INFO L225 Difference]: With dead ends: 724 [2022-04-05 09:31:04,342 INFO L226 Difference]: Without dead ends: 695 [2022-04-05 09:31:04,342 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=54, Invalid=366, Unknown=0, NotChecked=0, Total=420 [2022-04-05 09:31:04,343 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 [2022-04-05 09:31:04,343 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] [2022-04-05 09:31:04,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 695 states. [2022-04-05 09:31:04,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 695 to 695. [2022-04-05 09:31:04,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 695 states, 549 states have (on average 1.2604735883424407) internal successors, (692), 564 states have internal predecessors, (692), 74 states have call successors, (74), 50 states have call predecessors, (74), 71 states have return successors, (99), 89 states have call predecessors, (99), 69 states have call successors, (99) [2022-04-05 09:31:04,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 695 states to 695 states and 865 transitions. [2022-04-05 09:31:04,398 INFO L78 Accepts]: Start accepts. Automaton has 695 states and 865 transitions. Word has length 69 [2022-04-05 09:31:04,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 09:31:04,398 INFO L478 AbstractCegarLoop]: Abstraction has 695 states and 865 transitions. [2022-04-05 09:31:04,398 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.789473684210526) internal successors, (53), 9 states have internal predecessors, (53), 2 states have call successors, (9), 8 states have call predecessors, (9), 5 states have return successors, (7), 5 states have call predecessors, (7), 1 states have call successors, (7) [2022-04-05 09:31:04,398 INFO L276 IsEmpty]: Start isEmpty. Operand 695 states and 865 transitions. [2022-04-05 09:31:04,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-04-05 09:31:04,400 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 09:31:04,400 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 09:31:04,400 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2022-04-05 09:31:04,400 INFO L403 AbstractCegarLoop]: === Iteration 54 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 09:31:04,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 09:31:04,400 INFO L85 PathProgramCache]: Analyzing trace with hash -914202014, now seen corresponding path program 1 times [2022-04-05 09:31:04,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 09:31:04,400 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571690589] [2022-04-05 09:31:04,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 09:31:04,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 09:31:04,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:04,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 09:31:04,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:04,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 09:31:04,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:04,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-05 09:31:04,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:04,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-05 09:31:04,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:04,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-05 09:31:04,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:04,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-04-05 09:31:04,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:04,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-04-05 09:31:04,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:04,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-05 09:31:04,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 09:31:04,556 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571690589] [2022-04-05 09:31:04,556 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571690589] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 09:31:04,556 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 09:31:04,556 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-04-05 09:31:04,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991242709] [2022-04-05 09:31:04,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 09:31:04,556 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-04-05 09:31:04,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 09:31:04,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-04-05 09:31:04,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2022-04-05 09:31:04,557 INFO L87 Difference]: Start difference. First operand 695 states and 865 transitions. Second operand has 12 states, 12 states have (on average 4.416666666666667) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-04-05 09:31:05,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 09:31:05,244 INFO L93 Difference]: Finished difference Result 729 states and 900 transitions. [2022-04-05 09:31:05,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-04-05 09:31:05,244 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.416666666666667) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 69 [2022-04-05 09:31:05,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 09:31:05,246 INFO L225 Difference]: With dead ends: 729 [2022-04-05 09:31:05,246 INFO L226 Difference]: Without dead ends: 690 [2022-04-05 09:31:05,246 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2022-04-05 09:31:05,246 INFO L913 BasicCegarLoop]: 398 mSDtfsCounter, 495 mSDsluCounter, 522 mSDsCounter, 0 mSdLazyCounter, 1279 mSolverCounterSat, 167 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 497 SdHoareTripleChecker+Valid, 920 SdHoareTripleChecker+Invalid, 1446 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 167 IncrementalHoareTripleChecker+Valid, 1279 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-04-05 09:31:05,246 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [497 Valid, 920 Invalid, 1446 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [167 Valid, 1279 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-04-05 09:31:05,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 690 states. [2022-04-05 09:31:05,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 690 to 690. [2022-04-05 09:31:05,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 690 states, 545 states have (on average 1.2605504587155962) internal successors, (687), 560 states have internal predecessors, (687), 73 states have call successors, (73), 50 states have call predecessors, (73), 71 states have return successors, (98), 88 states have call predecessors, (98), 68 states have call successors, (98) [2022-04-05 09:31:05,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 690 states to 690 states and 858 transitions. [2022-04-05 09:31:05,302 INFO L78 Accepts]: Start accepts. Automaton has 690 states and 858 transitions. Word has length 69 [2022-04-05 09:31:05,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 09:31:05,303 INFO L478 AbstractCegarLoop]: Abstraction has 690 states and 858 transitions. [2022-04-05 09:31:05,303 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.416666666666667) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-04-05 09:31:05,303 INFO L276 IsEmpty]: Start isEmpty. Operand 690 states and 858 transitions. [2022-04-05 09:31:05,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-04-05 09:31:05,304 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 09:31:05,304 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 09:31:05,304 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2022-04-05 09:31:05,304 INFO L403 AbstractCegarLoop]: === Iteration 55 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 09:31:05,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 09:31:05,304 INFO L85 PathProgramCache]: Analyzing trace with hash -761466943, now seen corresponding path program 1 times [2022-04-05 09:31:05,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 09:31:05,304 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928199129] [2022-04-05 09:31:05,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 09:31:05,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 09:31:05,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:05,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 09:31:05,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:05,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 09:31:05,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:05,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-05 09:31:05,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:05,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-05 09:31:05,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:05,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-05 09:31:05,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:05,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-05 09:31:05,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:05,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-04-05 09:31:05,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:05,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-05 09:31:05,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 09:31:05,505 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928199129] [2022-04-05 09:31:05,505 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [928199129] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 09:31:05,505 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 09:31:05,505 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-04-05 09:31:05,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197585849] [2022-04-05 09:31:05,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 09:31:05,506 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-04-05 09:31:05,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 09:31:05,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-04-05 09:31:05,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=256, Unknown=0, NotChecked=0, Total=306 [2022-04-05 09:31:05,506 INFO L87 Difference]: Start difference. First operand 690 states and 858 transitions. Second operand has 18 states, 18 states have (on average 2.9444444444444446) internal successors, (53), 8 states have internal predecessors, (53), 3 states have call successors, (9), 9 states have call predecessors, (9), 4 states have return successors, (7), 5 states have call predecessors, (7), 2 states have call successors, (7) [2022-04-05 09:31:06,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 09:31:06,922 INFO L93 Difference]: Finished difference Result 717 states and 888 transitions. [2022-04-05 09:31:06,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-04-05 09:31:06,922 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.9444444444444446) internal successors, (53), 8 states have internal predecessors, (53), 3 states have call successors, (9), 9 states have call predecessors, (9), 4 states have return successors, (7), 5 states have call predecessors, (7), 2 states have call successors, (7) Word has length 69 [2022-04-05 09:31:06,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 09:31:06,923 INFO L225 Difference]: With dead ends: 717 [2022-04-05 09:31:06,924 INFO L226 Difference]: Without dead ends: 687 [2022-04-05 09:31:06,924 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=96, Invalid=456, Unknown=0, NotChecked=0, Total=552 [2022-04-05 09:31:06,924 INFO L913 BasicCegarLoop]: 413 mSDtfsCounter, 702 mSDsluCounter, 1464 mSDsCounter, 0 mSdLazyCounter, 3393 mSolverCounterSat, 232 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 705 SdHoareTripleChecker+Valid, 1877 SdHoareTripleChecker+Invalid, 3625 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 232 IncrementalHoareTripleChecker+Valid, 3393 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-04-05 09:31:06,924 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [705 Valid, 1877 Invalid, 3625 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [232 Valid, 3393 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-04-05 09:31:06,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 687 states. [2022-04-05 09:31:06,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 687 to 687. [2022-04-05 09:31:06,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 687 states, 543 states have (on average 1.2596685082872927) internal successors, (684), 558 states have internal predecessors, (684), 72 states have call successors, (72), 50 states have call predecessors, (72), 71 states have return successors, (97), 87 states have call predecessors, (97), 67 states have call successors, (97) [2022-04-05 09:31:06,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 687 states to 687 states and 853 transitions. [2022-04-05 09:31:06,979 INFO L78 Accepts]: Start accepts. Automaton has 687 states and 853 transitions. Word has length 69 [2022-04-05 09:31:06,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 09:31:06,980 INFO L478 AbstractCegarLoop]: Abstraction has 687 states and 853 transitions. [2022-04-05 09:31:06,980 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.9444444444444446) internal successors, (53), 8 states have internal predecessors, (53), 3 states have call successors, (9), 9 states have call predecessors, (9), 4 states have return successors, (7), 5 states have call predecessors, (7), 2 states have call successors, (7) [2022-04-05 09:31:06,980 INFO L276 IsEmpty]: Start isEmpty. Operand 687 states and 853 transitions. [2022-04-05 09:31:06,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-04-05 09:31:06,981 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 09:31:06,981 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 09:31:06,981 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2022-04-05 09:31:06,981 INFO L403 AbstractCegarLoop]: === Iteration 56 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 09:31:06,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 09:31:06,981 INFO L85 PathProgramCache]: Analyzing trace with hash 1045116325, now seen corresponding path program 1 times [2022-04-05 09:31:06,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 09:31:06,981 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173978963] [2022-04-05 09:31:06,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 09:31:06,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 09:31:06,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:07,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 09:31:07,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:07,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 09:31:07,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:07,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-05 09:31:07,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:07,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-05 09:31:07,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:07,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-04-05 09:31:07,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:07,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-04-05 09:31:07,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:07,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-05 09:31:07,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:07,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-05 09:31:07,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 09:31:07,157 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173978963] [2022-04-05 09:31:07,157 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [173978963] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 09:31:07,157 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 09:31:07,157 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-04-05 09:31:07,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432130849] [2022-04-05 09:31:07,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 09:31:07,158 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-04-05 09:31:07,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 09:31:07,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-04-05 09:31:07,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2022-04-05 09:31:07,158 INFO L87 Difference]: Start difference. First operand 687 states and 853 transitions. Second operand has 12 states, 12 states have (on average 4.416666666666667) internal successors, (53), 5 states have internal predecessors, (53), 3 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 4 states have call predecessors, (7), 2 states have call successors, (7) [2022-04-05 09:31:08,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 09:31:08,269 INFO L93 Difference]: Finished difference Result 746 states and 928 transitions. [2022-04-05 09:31:08,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-04-05 09:31:08,270 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.416666666666667) internal successors, (53), 5 states have internal predecessors, (53), 3 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 4 states have call predecessors, (7), 2 states have call successors, (7) Word has length 69 [2022-04-05 09:31:08,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 09:31:08,271 INFO L225 Difference]: With dead ends: 746 [2022-04-05 09:31:08,271 INFO L226 Difference]: Without dead ends: 742 [2022-04-05 09:31:08,271 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 [2022-04-05 09:31:08,272 INFO L913 BasicCegarLoop]: 384 mSDtfsCounter, 1419 mSDsluCounter, 372 mSDsCounter, 0 mSdLazyCounter, 980 mSolverCounterSat, 452 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1426 SdHoareTripleChecker+Valid, 756 SdHoareTripleChecker+Invalid, 1432 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 452 IncrementalHoareTripleChecker+Valid, 980 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-04-05 09:31:08,272 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1426 Valid, 756 Invalid, 1432 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [452 Valid, 980 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-04-05 09:31:08,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 742 states. [2022-04-05 09:31:08,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 742 to 685. [2022-04-05 09:31:08,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 685 states, 541 states have (on average 1.2587800369685767) internal successors, (681), 556 states have internal predecessors, (681), 72 states have call successors, (72), 50 states have call predecessors, (72), 71 states have return successors, (97), 87 states have call predecessors, (97), 67 states have call successors, (97) [2022-04-05 09:31:08,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 685 states to 685 states and 850 transitions. [2022-04-05 09:31:08,328 INFO L78 Accepts]: Start accepts. Automaton has 685 states and 850 transitions. Word has length 69 [2022-04-05 09:31:08,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 09:31:08,328 INFO L478 AbstractCegarLoop]: Abstraction has 685 states and 850 transitions. [2022-04-05 09:31:08,328 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.416666666666667) internal successors, (53), 5 states have internal predecessors, (53), 3 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 4 states have call predecessors, (7), 2 states have call successors, (7) [2022-04-05 09:31:08,328 INFO L276 IsEmpty]: Start isEmpty. Operand 685 states and 850 transitions. [2022-04-05 09:31:08,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-04-05 09:31:08,329 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 09:31:08,329 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 09:31:08,329 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2022-04-05 09:31:08,329 INFO L403 AbstractCegarLoop]: === Iteration 57 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 09:31:08,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 09:31:08,329 INFO L85 PathProgramCache]: Analyzing trace with hash 1045148069, now seen corresponding path program 1 times [2022-04-05 09:31:08,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 09:31:08,329 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57166110] [2022-04-05 09:31:08,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 09:31:08,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 09:31:08,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:08,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 09:31:08,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:08,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 09:31:08,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:08,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-05 09:31:08,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:08,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-05 09:31:08,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:08,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-04-05 09:31:08,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:08,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-04-05 09:31:08,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:08,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-05 09:31:08,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:08,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-05 09:31:08,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 09:31:08,560 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [57166110] [2022-04-05 09:31:08,560 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [57166110] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 09:31:08,560 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 09:31:08,560 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-04-05 09:31:08,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429496966] [2022-04-05 09:31:08,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 09:31:08,561 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-04-05 09:31:08,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 09:31:08,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-04-05 09:31:08,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=256, Unknown=0, NotChecked=0, Total=306 [2022-04-05 09:31:08,561 INFO L87 Difference]: Start difference. First operand 685 states and 850 transitions. Second operand has 18 states, 18 states have (on average 2.9444444444444446) internal successors, (53), 8 states have internal predecessors, (53), 2 states have call successors, (9), 9 states have call predecessors, (9), 4 states have return successors, (7), 4 states have call predecessors, (7), 1 states have call successors, (7) [2022-04-05 09:31:09,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 09:31:09,862 INFO L93 Difference]: Finished difference Result 695 states and 859 transitions. [2022-04-05 09:31:09,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-04-05 09:31:09,862 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.9444444444444446) internal successors, (53), 8 states have internal predecessors, (53), 2 states have call successors, (9), 9 states have call predecessors, (9), 4 states have return successors, (7), 4 states have call predecessors, (7), 1 states have call successors, (7) Word has length 69 [2022-04-05 09:31:09,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 09:31:09,863 INFO L225 Difference]: With dead ends: 695 [2022-04-05 09:31:09,863 INFO L226 Difference]: Without dead ends: 633 [2022-04-05 09:31:09,864 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=100, Invalid=656, Unknown=0, NotChecked=0, Total=756 [2022-04-05 09:31:09,864 INFO L913 BasicCegarLoop]: 361 mSDtfsCounter, 330 mSDsluCounter, 1138 mSDsCounter, 0 mSdLazyCounter, 3541 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s 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, 1.1s IncrementalHoareTripleChecker+Time [2022-04-05 09:31:09,864 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [340 Valid, 1499 Invalid, 3647 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 3541 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-04-05 09:31:09,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 633 states. [2022-04-05 09:31:09,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 633 to 629. [2022-04-05 09:31:09,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 629 states, 495 states have (on average 1.2505050505050506) internal successors, (619), 508 states have internal predecessors, (619), 70 states have call successors, (70), 48 states have call predecessors, (70), 63 states have return successors, (89), 79 states have call predecessors, (89), 65 states have call successors, (89) [2022-04-05 09:31:09,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 629 states to 629 states and 778 transitions. [2022-04-05 09:31:09,921 INFO L78 Accepts]: Start accepts. Automaton has 629 states and 778 transitions. Word has length 69 [2022-04-05 09:31:09,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 09:31:09,921 INFO L478 AbstractCegarLoop]: Abstraction has 629 states and 778 transitions. [2022-04-05 09:31:09,921 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.9444444444444446) internal successors, (53), 8 states have internal predecessors, (53), 2 states have call successors, (9), 9 states have call predecessors, (9), 4 states have return successors, (7), 4 states have call predecessors, (7), 1 states have call successors, (7) [2022-04-05 09:31:09,922 INFO L276 IsEmpty]: Start isEmpty. Operand 629 states and 778 transitions. [2022-04-05 09:31:09,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-04-05 09:31:09,922 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 09:31:09,922 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 09:31:09,922 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2022-04-05 09:31:09,923 INFO L403 AbstractCegarLoop]: === Iteration 58 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 09:31:09,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 09:31:09,923 INFO L85 PathProgramCache]: Analyzing trace with hash 1513722750, now seen corresponding path program 1 times [2022-04-05 09:31:09,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 09:31:09,923 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10686066] [2022-04-05 09:31:09,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 09:31:09,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 09:31:09,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:09,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 09:31:09,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:09,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 09:31:09,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:10,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-05 09:31:10,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:10,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-05 09:31:10,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:10,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-05 09:31:10,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:10,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-04-05 09:31:10,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:10,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-05 09:31:10,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:10,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-05 09:31:10,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:10,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-05 09:31:10,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 09:31:10,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10686066] [2022-04-05 09:31:10,177 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [10686066] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 09:31:10,177 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 09:31:10,177 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-04-05 09:31:10,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859365820] [2022-04-05 09:31:10,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 09:31:10,178 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-04-05 09:31:10,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 09:31:10,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-04-05 09:31:10,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=359, Unknown=0, NotChecked=0, Total=420 [2022-04-05 09:31:10,178 INFO L87 Difference]: Start difference. First operand 629 states and 778 transitions. Second operand has 21 states, 20 states have (on average 2.65) internal successors, (53), 10 states have internal predecessors, (53), 4 states have call successors, (10), 10 states have call predecessors, (10), 4 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) [2022-04-05 09:31:11,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 09:31:11,728 INFO L93 Difference]: Finished difference Result 662 states and 817 transitions. [2022-04-05 09:31:11,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-04-05 09:31:11,728 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 2.65) internal successors, (53), 10 states have internal predecessors, (53), 4 states have call successors, (10), 10 states have call predecessors, (10), 4 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) Word has length 71 [2022-04-05 09:31:11,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 09:31:11,729 INFO L225 Difference]: With dead ends: 662 [2022-04-05 09:31:11,729 INFO L226 Difference]: Without dead ends: 635 [2022-04-05 09:31:11,730 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=120, Invalid=692, Unknown=0, NotChecked=0, Total=812 [2022-04-05 09:31:11,730 INFO L913 BasicCegarLoop]: 408 mSDtfsCounter, 920 mSDsluCounter, 1474 mSDsCounter, 0 mSdLazyCounter, 3544 mSolverCounterSat, 326 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 922 SdHoareTripleChecker+Valid, 1882 SdHoareTripleChecker+Invalid, 3870 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 326 IncrementalHoareTripleChecker+Valid, 3544 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-04-05 09:31:11,730 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [922 Valid, 1882 Invalid, 3870 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [326 Valid, 3544 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-04-05 09:31:11,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 635 states. [2022-04-05 09:31:11,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 635 to 631. [2022-04-05 09:31:11,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 631 states, 497 states have (on average 1.243460764587525) internal successors, (618), 510 states have internal predecessors, (618), 70 states have call successors, (70), 48 states have call predecessors, (70), 63 states have return successors, (89), 79 states have call predecessors, (89), 65 states have call successors, (89) [2022-04-05 09:31:11,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 631 states to 631 states and 777 transitions. [2022-04-05 09:31:11,804 INFO L78 Accepts]: Start accepts. Automaton has 631 states and 777 transitions. Word has length 71 [2022-04-05 09:31:11,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 09:31:11,804 INFO L478 AbstractCegarLoop]: Abstraction has 631 states and 777 transitions. [2022-04-05 09:31:11,804 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 2.65) internal successors, (53), 10 states have internal predecessors, (53), 4 states have call successors, (10), 10 states have call predecessors, (10), 4 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) [2022-04-05 09:31:11,804 INFO L276 IsEmpty]: Start isEmpty. Operand 631 states and 777 transitions. [2022-04-05 09:31:11,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-04-05 09:31:11,805 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 09:31:11,805 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 09:31:11,805 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2022-04-05 09:31:11,805 INFO L403 AbstractCegarLoop]: === Iteration 59 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 09:31:11,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 09:31:11,806 INFO L85 PathProgramCache]: Analyzing trace with hash 1880837203, now seen corresponding path program 1 times [2022-04-05 09:31:11,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 09:31:11,806 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766013850] [2022-04-05 09:31:11,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 09:31:11,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 09:31:11,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:11,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 09:31:11,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:11,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 09:31:11,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:11,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-05 09:31:11,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:11,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-05 09:31:11,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:11,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-05 09:31:11,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:11,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-05 09:31:11,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:11,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-04-05 09:31:11,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:12,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-04-05 09:31:12,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:12,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-05 09:31:12,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:12,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-05 09:31:12,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 09:31:12,063 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766013850] [2022-04-05 09:31:12,063 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1766013850] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 09:31:12,063 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 09:31:12,064 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-04-05 09:31:12,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791876715] [2022-04-05 09:31:12,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 09:31:12,064 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-04-05 09:31:12,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 09:31:12,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-04-05 09:31:12,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=359, Unknown=0, NotChecked=0, Total=420 [2022-04-05 09:31:12,064 INFO L87 Difference]: Start difference. First operand 631 states and 777 transitions. Second operand has 21 states, 20 states have (on average 2.7) internal successors, (54), 10 states have internal predecessors, (54), 4 states have call successors, (11), 10 states have call predecessors, (11), 4 states have return successors, (9), 5 states have call predecessors, (9), 3 states have call successors, (9) [2022-04-05 09:31:13,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 09:31:13,879 INFO L93 Difference]: Finished difference Result 657 states and 805 transitions. [2022-04-05 09:31:13,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-04-05 09:31:13,879 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 2.7) internal successors, (54), 10 states have internal predecessors, (54), 4 states have call successors, (11), 10 states have call predecessors, (11), 4 states have return successors, (9), 5 states have call predecessors, (9), 3 states have call successors, (9) Word has length 74 [2022-04-05 09:31:13,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 09:31:13,881 INFO L225 Difference]: With dead ends: 657 [2022-04-05 09:31:13,881 INFO L226 Difference]: Without dead ends: 633 [2022-04-05 09:31:13,882 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=120, Invalid=692, Unknown=0, NotChecked=0, Total=812 [2022-04-05 09:31:13,882 INFO L913 BasicCegarLoop]: 403 mSDtfsCounter, 695 mSDsluCounter, 1634 mSDsCounter, 0 mSdLazyCounter, 3837 mSolverCounterSat, 239 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 697 SdHoareTripleChecker+Valid, 2037 SdHoareTripleChecker+Invalid, 4076 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 239 IncrementalHoareTripleChecker+Valid, 3837 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-04-05 09:31:13,882 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [697 Valid, 2037 Invalid, 4076 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [239 Valid, 3837 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-04-05 09:31:13,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 633 states. [2022-04-05 09:31:13,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 633 to 629. [2022-04-05 09:31:13,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 629 states, 496 states have (on average 1.2419354838709677) internal successors, (616), 509 states have internal predecessors, (616), 69 states have call successors, (69), 48 states have call predecessors, (69), 63 states have return successors, (88), 78 states have call predecessors, (88), 64 states have call successors, (88) [2022-04-05 09:31:13,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 629 states to 629 states and 773 transitions. [2022-04-05 09:31:13,950 INFO L78 Accepts]: Start accepts. Automaton has 629 states and 773 transitions. Word has length 74 [2022-04-05 09:31:13,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 09:31:13,950 INFO L478 AbstractCegarLoop]: Abstraction has 629 states and 773 transitions. [2022-04-05 09:31:13,950 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 2.7) internal successors, (54), 10 states have internal predecessors, (54), 4 states have call successors, (11), 10 states have call predecessors, (11), 4 states have return successors, (9), 5 states have call predecessors, (9), 3 states have call successors, (9) [2022-04-05 09:31:13,950 INFO L276 IsEmpty]: Start isEmpty. Operand 629 states and 773 transitions. [2022-04-05 09:31:13,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-04-05 09:31:13,951 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 09:31:13,951 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 09:31:13,951 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2022-04-05 09:31:13,951 INFO L403 AbstractCegarLoop]: === Iteration 60 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 09:31:13,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 09:31:13,952 INFO L85 PathProgramCache]: Analyzing trace with hash 488230751, now seen corresponding path program 1 times [2022-04-05 09:31:13,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 09:31:13,952 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108323787] [2022-04-05 09:31:13,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 09:31:13,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 09:31:13,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:14,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 09:31:14,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:14,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 09:31:14,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:14,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-05 09:31:14,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:14,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-05 09:31:14,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:14,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-05 09:31:14,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:14,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-04-05 09:31:14,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:14,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-05 09:31:14,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:14,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-05 09:31:14,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:14,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-05 09:31:14,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 09:31:14,144 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108323787] [2022-04-05 09:31:14,144 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [108323787] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 09:31:14,145 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 09:31:14,145 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-04-05 09:31:14,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769869390] [2022-04-05 09:31:14,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 09:31:14,145 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-04-05 09:31:14,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 09:31:14,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-04-05 09:31:14,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2022-04-05 09:31:14,146 INFO L87 Difference]: Start difference. First operand 629 states and 773 transitions. Second operand has 13 states, 13 states have (on average 4.076923076923077) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-04-05 09:31:15,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 09:31:15,227 INFO L93 Difference]: Finished difference Result 667 states and 812 transitions. [2022-04-05 09:31:15,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-04-05 09:31:15,228 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.076923076923077) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 71 [2022-04-05 09:31:15,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 09:31:15,237 INFO L225 Difference]: With dead ends: 667 [2022-04-05 09:31:15,237 INFO L226 Difference]: Without dead ends: 622 [2022-04-05 09:31:15,237 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2022-04-05 09:31:15,237 INFO L913 BasicCegarLoop]: 389 mSDtfsCounter, 258 mSDsluCounter, 599 mSDsCounter, 0 mSdLazyCounter, 1480 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s 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 [2022-04-05 09:31:15,237 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] [2022-04-05 09:31:15,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 622 states. [2022-04-05 09:31:15,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 622 to 622. [2022-04-05 09:31:15,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 622 states, 490 states have (on average 1.2428571428571429) internal successors, (609), 503 states have internal predecessors, (609), 68 states have call successors, (68), 48 states have call predecessors, (68), 63 states have return successors, (86), 77 states have call predecessors, (86), 63 states have call successors, (86) [2022-04-05 09:31:15,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 622 states to 622 states and 763 transitions. [2022-04-05 09:31:15,298 INFO L78 Accepts]: Start accepts. Automaton has 622 states and 763 transitions. Word has length 71 [2022-04-05 09:31:15,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 09:31:15,298 INFO L478 AbstractCegarLoop]: Abstraction has 622 states and 763 transitions. [2022-04-05 09:31:15,298 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.076923076923077) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-04-05 09:31:15,298 INFO L276 IsEmpty]: Start isEmpty. Operand 622 states and 763 transitions. [2022-04-05 09:31:15,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-04-05 09:31:15,299 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 09:31:15,299 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 09:31:15,299 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2022-04-05 09:31:15,299 INFO L403 AbstractCegarLoop]: === Iteration 61 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 09:31:15,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 09:31:15,300 INFO L85 PathProgramCache]: Analyzing trace with hash -756614912, now seen corresponding path program 1 times [2022-04-05 09:31:15,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 09:31:15,300 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511736451] [2022-04-05 09:31:15,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 09:31:15,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 09:31:15,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:15,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 09:31:15,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:15,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 09:31:15,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:15,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-05 09:31:15,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:15,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-05 09:31:15,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:15,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-05 09:31:15,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:15,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-04-05 09:31:15,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:15,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-05 09:31:15,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:15,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-05 09:31:15,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:15,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-05 09:31:15,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 09:31:15,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511736451] [2022-04-05 09:31:15,463 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [511736451] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 09:31:15,463 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 09:31:15,463 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-04-05 09:31:15,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675530857] [2022-04-05 09:31:15,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 09:31:15,464 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-04-05 09:31:15,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 09:31:15,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-04-05 09:31:15,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2022-04-05 09:31:15,464 INFO L87 Difference]: Start difference. First operand 622 states and 763 transitions. Second operand has 13 states, 13 states have (on average 4.076923076923077) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-04-05 09:31:16,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 09:31:16,421 INFO L93 Difference]: Finished difference Result 660 states and 802 transitions. [2022-04-05 09:31:16,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-04-05 09:31:16,422 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.076923076923077) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 71 [2022-04-05 09:31:16,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 09:31:16,423 INFO L225 Difference]: With dead ends: 660 [2022-04-05 09:31:16,423 INFO L226 Difference]: Without dead ends: 616 [2022-04-05 09:31:16,423 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2022-04-05 09:31:16,423 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 [2022-04-05 09:31:16,424 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] [2022-04-05 09:31:16,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 616 states. [2022-04-05 09:31:16,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 616 to 616. [2022-04-05 09:31:16,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 616 states, 485 states have (on average 1.243298969072165) internal successors, (603), 498 states have internal predecessors, (603), 67 states have call successors, (67), 48 states have call predecessors, (67), 63 states have return successors, (85), 76 states have call predecessors, (85), 62 states have call successors, (85) [2022-04-05 09:31:16,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 616 states to 616 states and 755 transitions. [2022-04-05 09:31:16,472 INFO L78 Accepts]: Start accepts. Automaton has 616 states and 755 transitions. Word has length 71 [2022-04-05 09:31:16,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 09:31:16,472 INFO L478 AbstractCegarLoop]: Abstraction has 616 states and 755 transitions. [2022-04-05 09:31:16,473 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.076923076923077) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-04-05 09:31:16,473 INFO L276 IsEmpty]: Start isEmpty. Operand 616 states and 755 transitions. [2022-04-05 09:31:16,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-04-05 09:31:16,473 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 09:31:16,474 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 09:31:16,474 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2022-04-05 09:31:16,474 INFO L403 AbstractCegarLoop]: === Iteration 62 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 09:31:16,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 09:31:16,474 INFO L85 PathProgramCache]: Analyzing trace with hash 590503932, now seen corresponding path program 1 times [2022-04-05 09:31:16,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 09:31:16,474 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118198447] [2022-04-05 09:31:16,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 09:31:16,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 09:31:16,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:16,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 09:31:16,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:16,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 09:31:16,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:16,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-05 09:31:16,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:16,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-05 09:31:16,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:16,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-05 09:31:16,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:16,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-05 09:31:16,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:16,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-05 09:31:16,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:16,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-04-05 09:31:16,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:16,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-05 09:31:16,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:16,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-05 09:31:16,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 09:31:16,751 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118198447] [2022-04-05 09:31:16,751 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1118198447] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 09:31:16,751 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 09:31:16,751 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-04-05 09:31:16,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336197901] [2022-04-05 09:31:16,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 09:31:16,751 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-04-05 09:31:16,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 09:31:16,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-04-05 09:31:16,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=359, Unknown=0, NotChecked=0, Total=420 [2022-04-05 09:31:16,752 INFO L87 Difference]: Start difference. First operand 616 states and 755 transitions. Second operand has 21 states, 21 states have (on average 2.7142857142857144) internal successors, (57), 10 states have internal predecessors, (57), 4 states have call successors, (11), 10 states have call predecessors, (11), 4 states have return successors, (9), 5 states have call predecessors, (9), 3 states have call successors, (9) [2022-04-05 09:31:17,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 09:31:17,935 INFO L93 Difference]: Finished difference Result 640 states and 781 transitions. [2022-04-05 09:31:17,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-04-05 09:31:17,935 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.7142857142857144) internal successors, (57), 10 states have internal predecessors, (57), 4 states have call successors, (11), 10 states have call predecessors, (11), 4 states have return successors, (9), 5 states have call predecessors, (9), 3 states have call successors, (9) Word has length 77 [2022-04-05 09:31:17,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 09:31:17,936 INFO L225 Difference]: With dead ends: 640 [2022-04-05 09:31:17,936 INFO L226 Difference]: Without dead ends: 614 [2022-04-05 09:31:17,937 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=120, Invalid=692, Unknown=0, NotChecked=0, Total=812 [2022-04-05 09:31:17,937 INFO L913 BasicCegarLoop]: 385 mSDtfsCounter, 462 mSDsluCounter, 1531 mSDsCounter, 0 mSdLazyCounter, 3347 mSolverCounterSat, 160 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 464 SdHoareTripleChecker+Valid, 1916 SdHoareTripleChecker+Invalid, 3507 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 160 IncrementalHoareTripleChecker+Valid, 3347 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-04-05 09:31:17,937 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [464 Valid, 1916 Invalid, 3507 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [160 Valid, 3347 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-04-05 09:31:17,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 614 states. [2022-04-05 09:31:18,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 614 to 614. [2022-04-05 09:31:18,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 614 states, 483 states have (on average 1.2422360248447204) internal successors, (600), 496 states have internal predecessors, (600), 67 states have call successors, (67), 48 states have call predecessors, (67), 63 states have return successors, (85), 76 states have call predecessors, (85), 62 states have call successors, (85) [2022-04-05 09:31:18,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 614 states to 614 states and 752 transitions. [2022-04-05 09:31:18,005 INFO L78 Accepts]: Start accepts. Automaton has 614 states and 752 transitions. Word has length 77 [2022-04-05 09:31:18,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 09:31:18,005 INFO L478 AbstractCegarLoop]: Abstraction has 614 states and 752 transitions. [2022-04-05 09:31:18,005 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.7142857142857144) internal successors, (57), 10 states have internal predecessors, (57), 4 states have call successors, (11), 10 states have call predecessors, (11), 4 states have return successors, (9), 5 states have call predecessors, (9), 3 states have call successors, (9) [2022-04-05 09:31:18,005 INFO L276 IsEmpty]: Start isEmpty. Operand 614 states and 752 transitions. [2022-04-05 09:31:18,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-04-05 09:31:18,006 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 09:31:18,006 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 09:31:18,006 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2022-04-05 09:31:18,007 INFO L403 AbstractCegarLoop]: === Iteration 63 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 09:31:18,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 09:31:18,007 INFO L85 PathProgramCache]: Analyzing trace with hash -186895060, now seen corresponding path program 1 times [2022-04-05 09:31:18,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 09:31:18,007 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910833341] [2022-04-05 09:31:18,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 09:31:18,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 09:31:18,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:18,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 09:31:18,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:18,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 09:31:18,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:18,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-05 09:31:18,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:18,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-05 09:31:18,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:18,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-05 09:31:18,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:18,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-05 09:31:18,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:18,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-05 09:31:18,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:18,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-04-05 09:31:18,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:18,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-05 09:31:18,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:18,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-05 09:31:18,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 09:31:18,196 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910833341] [2022-04-05 09:31:18,196 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1910833341] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 09:31:18,196 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 09:31:18,196 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-04-05 09:31:18,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943170498] [2022-04-05 09:31:18,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 09:31:18,196 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-04-05 09:31:18,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 09:31:18,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-04-05 09:31:18,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2022-04-05 09:31:18,197 INFO L87 Difference]: Start difference. First operand 614 states and 752 transitions. Second operand has 13 states, 13 states have (on average 4.461538461538462) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (11), 10 states have call predecessors, (11), 3 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2022-04-05 09:31:18,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 09:31:18,893 INFO L93 Difference]: Finished difference Result 652 states and 791 transitions. [2022-04-05 09:31:18,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-04-05 09:31:18,893 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.461538461538462) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (11), 10 states have call predecessors, (11), 3 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) Word has length 78 [2022-04-05 09:31:18,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 09:31:18,894 INFO L225 Difference]: With dead ends: 652 [2022-04-05 09:31:18,894 INFO L226 Difference]: Without dead ends: 598 [2022-04-05 09:31:18,895 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2022-04-05 09:31:18,895 INFO L913 BasicCegarLoop]: 360 mSDtfsCounter, 236 mSDsluCounter, 595 mSDsCounter, 0 mSdLazyCounter, 1367 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 237 SdHoareTripleChecker+Valid, 955 SdHoareTripleChecker+Invalid, 1449 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 1367 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-04-05 09:31:18,895 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [237 Valid, 955 Invalid, 1449 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 1367 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-04-05 09:31:18,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 598 states. [2022-04-05 09:31:18,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 598 to 598. [2022-04-05 09:31:18,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 598 states, 470 states have (on average 1.2382978723404254) internal successors, (582), 483 states have internal predecessors, (582), 64 states have call successors, (64), 48 states have call predecessors, (64), 63 states have return successors, (81), 73 states have call predecessors, (81), 59 states have call successors, (81) [2022-04-05 09:31:18,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 598 states to 598 states and 727 transitions. [2022-04-05 09:31:18,947 INFO L78 Accepts]: Start accepts. Automaton has 598 states and 727 transitions. Word has length 78 [2022-04-05 09:31:18,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 09:31:18,947 INFO L478 AbstractCegarLoop]: Abstraction has 598 states and 727 transitions. [2022-04-05 09:31:18,947 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.461538461538462) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (11), 10 states have call predecessors, (11), 3 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2022-04-05 09:31:18,947 INFO L276 IsEmpty]: Start isEmpty. Operand 598 states and 727 transitions. [2022-04-05 09:31:18,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-04-05 09:31:18,948 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 09:31:18,948 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 09:31:18,948 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2022-04-05 09:31:18,948 INFO L403 AbstractCegarLoop]: === Iteration 64 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 09:31:18,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 09:31:18,949 INFO L85 PathProgramCache]: Analyzing trace with hash 355041746, now seen corresponding path program 1 times [2022-04-05 09:31:18,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 09:31:18,949 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394616600] [2022-04-05 09:31:18,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 09:31:18,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 09:31:18,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:18,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 09:31:18,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:19,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 09:31:19,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:19,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-05 09:31:19,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:19,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-05 09:31:19,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:19,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-05 09:31:19,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:19,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-04-05 09:31:19,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:19,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-05 09:31:19,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:19,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-05 09:31:19,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:19,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-05 09:31:19,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 09:31:19,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394616600] [2022-04-05 09:31:19,096 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [394616600] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 09:31:19,096 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 09:31:19,096 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-04-05 09:31:19,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211419293] [2022-04-05 09:31:19,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 09:31:19,096 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-04-05 09:31:19,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 09:31:19,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-04-05 09:31:19,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2022-04-05 09:31:19,096 INFO L87 Difference]: Start difference. First operand 598 states and 727 transitions. Second operand has 13 states, 13 states have (on average 4.230769230769231) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-04-05 09:31:19,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 09:31:19,834 INFO L93 Difference]: Finished difference Result 636 states and 766 transitions. [2022-04-05 09:31:19,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-04-05 09:31:19,835 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.230769230769231) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 73 [2022-04-05 09:31:19,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 09:31:19,836 INFO L225 Difference]: With dead ends: 636 [2022-04-05 09:31:19,836 INFO L226 Difference]: Without dead ends: 585 [2022-04-05 09:31:19,836 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2022-04-05 09:31:19,837 INFO L913 BasicCegarLoop]: 349 mSDtfsCounter, 738 mSDsluCounter, 617 mSDsCounter, 0 mSdLazyCounter, 1129 mSolverCounterSat, 260 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 739 SdHoareTripleChecker+Valid, 966 SdHoareTripleChecker+Invalid, 1389 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 260 IncrementalHoareTripleChecker+Valid, 1129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-04-05 09:31:19,842 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [739 Valid, 966 Invalid, 1389 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [260 Valid, 1129 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-04-05 09:31:19,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 585 states. [2022-04-05 09:31:19,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 585 to 585. [2022-04-05 09:31:19,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 585 states, 458 states have (on average 1.2336244541484715) internal successors, (565), 471 states have internal predecessors, (565), 63 states have call successors, (63), 48 states have call predecessors, (63), 63 states have return successors, (80), 72 states have call predecessors, (80), 58 states have call successors, (80) [2022-04-05 09:31:19,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 585 states to 585 states and 708 transitions. [2022-04-05 09:31:19,890 INFO L78 Accepts]: Start accepts. Automaton has 585 states and 708 transitions. Word has length 73 [2022-04-05 09:31:19,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 09:31:19,890 INFO L478 AbstractCegarLoop]: Abstraction has 585 states and 708 transitions. [2022-04-05 09:31:19,891 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.230769230769231) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-04-05 09:31:19,891 INFO L276 IsEmpty]: Start isEmpty. Operand 585 states and 708 transitions. [2022-04-05 09:31:19,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-04-05 09:31:19,891 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 09:31:19,892 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 09:31:19,892 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2022-04-05 09:31:19,892 INFO L403 AbstractCegarLoop]: === Iteration 65 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 09:31:19,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 09:31:19,892 INFO L85 PathProgramCache]: Analyzing trace with hash -1118214243, now seen corresponding path program 1 times [2022-04-05 09:31:19,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 09:31:19,892 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300850330] [2022-04-05 09:31:19,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 09:31:19,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 09:31:19,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:19,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 09:31:19,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:19,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 09:31:19,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:19,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-05 09:31:19,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:19,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-05 09:31:19,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:20,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-04-05 09:31:20,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:20,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-04-05 09:31:20,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:20,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-05 09:31:20,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:20,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-04-05 09:31:20,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:20,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-05 09:31:20,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 09:31:20,147 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300850330] [2022-04-05 09:31:20,147 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1300850330] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 09:31:20,147 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 09:31:20,147 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-04-05 09:31:20,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215757806] [2022-04-05 09:31:20,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 09:31:20,147 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-04-05 09:31:20,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 09:31:20,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-04-05 09:31:20,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=276, Unknown=0, NotChecked=0, Total=342 [2022-04-05 09:31:20,148 INFO L87 Difference]: Start difference. First operand 585 states and 708 transitions. Second operand has 19 states, 19 states have (on average 2.8947368421052633) internal successors, (55), 10 states have internal predecessors, (55), 5 states have call successors, (10), 10 states have call predecessors, (10), 4 states have return successors, (8), 6 states have call predecessors, (8), 4 states have call successors, (8) [2022-04-05 09:31:22,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 09:31:22,400 INFO L93 Difference]: Finished difference Result 1254 states and 1513 transitions. [2022-04-05 09:31:22,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-04-05 09:31:22,401 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.8947368421052633) internal successors, (55), 10 states have internal predecessors, (55), 5 states have call successors, (10), 10 states have call predecessors, (10), 4 states have return successors, (8), 6 states have call predecessors, (8), 4 states have call successors, (8) Word has length 73 [2022-04-05 09:31:22,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 09:31:22,403 INFO L225 Difference]: With dead ends: 1254 [2022-04-05 09:31:22,403 INFO L226 Difference]: Without dead ends: 1109 [2022-04-05 09:31:22,403 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 644 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=614, Invalid=2356, Unknown=0, NotChecked=0, Total=2970 [2022-04-05 09:31:22,403 INFO L913 BasicCegarLoop]: 354 mSDtfsCounter, 2190 mSDsluCounter, 819 mSDsCounter, 0 mSdLazyCounter, 3481 mSolverCounterSat, 700 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2194 SdHoareTripleChecker+Valid, 1173 SdHoareTripleChecker+Invalid, 4181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 700 IncrementalHoareTripleChecker+Valid, 3481 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-04-05 09:31:22,403 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [2194 Valid, 1173 Invalid, 4181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [700 Valid, 3481 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-04-05 09:31:22,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1109 states. [2022-04-05 09:31:22,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1109 to 916. [2022-04-05 09:31:22,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 916 states, 723 states have (on average 1.2572614107883817) internal successors, (909), 743 states have internal predecessors, (909), 95 states have call successors, (95), 76 states have call predecessors, (95), 97 states have return successors, (125), 103 states have call predecessors, (125), 90 states have call successors, (125) [2022-04-05 09:31:22,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 916 states to 916 states and 1129 transitions. [2022-04-05 09:31:22,474 INFO L78 Accepts]: Start accepts. Automaton has 916 states and 1129 transitions. Word has length 73 [2022-04-05 09:31:22,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 09:31:22,474 INFO L478 AbstractCegarLoop]: Abstraction has 916 states and 1129 transitions. [2022-04-05 09:31:22,474 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.8947368421052633) internal successors, (55), 10 states have internal predecessors, (55), 5 states have call successors, (10), 10 states have call predecessors, (10), 4 states have return successors, (8), 6 states have call predecessors, (8), 4 states have call successors, (8) [2022-04-05 09:31:22,474 INFO L276 IsEmpty]: Start isEmpty. Operand 916 states and 1129 transitions. [2022-04-05 09:31:22,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-04-05 09:31:22,476 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 09:31:22,476 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 09:31:22,476 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2022-04-05 09:31:22,476 INFO L403 AbstractCegarLoop]: === Iteration 66 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 09:31:22,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 09:31:22,476 INFO L85 PathProgramCache]: Analyzing trace with hash 1368905532, now seen corresponding path program 1 times [2022-04-05 09:31:22,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 09:31:22,476 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358691818] [2022-04-05 09:31:22,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 09:31:22,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 09:31:22,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:22,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 09:31:22,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:22,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 09:31:22,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:22,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-05 09:31:22,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:22,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-05 09:31:22,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:22,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-04-05 09:31:22,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:22,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-04-05 09:31:22,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:22,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-05 09:31:22,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:22,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-04-05 09:31:22,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:22,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-05 09:31:22,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 09:31:22,640 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358691818] [2022-04-05 09:31:22,640 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1358691818] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 09:31:22,640 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 09:31:22,640 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-04-05 09:31:22,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420807084] [2022-04-05 09:31:22,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 09:31:22,640 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-04-05 09:31:22,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 09:31:22,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-04-05 09:31:22,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2022-04-05 09:31:22,641 INFO L87 Difference]: Start difference. First operand 916 states and 1129 transitions. Second operand has 14 states, 14 states have (on average 3.9285714285714284) internal successors, (55), 6 states have internal predecessors, (55), 5 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2022-04-05 09:31:23,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 09:31:23,660 INFO L93 Difference]: Finished difference Result 1157 states and 1397 transitions. [2022-04-05 09:31:23,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-04-05 09:31:23,660 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.9285714285714284) internal successors, (55), 6 states have internal predecessors, (55), 5 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) Word has length 73 [2022-04-05 09:31:23,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 09:31:23,662 INFO L225 Difference]: With dead ends: 1157 [2022-04-05 09:31:23,662 INFO L226 Difference]: Without dead ends: 1052 [2022-04-05 09:31:23,662 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=189, Invalid=567, Unknown=0, NotChecked=0, Total=756 [2022-04-05 09:31:23,667 INFO L913 BasicCegarLoop]: 579 mSDtfsCounter, 2009 mSDsluCounter, 559 mSDsCounter, 0 mSdLazyCounter, 1613 mSolverCounterSat, 636 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s 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, 0.7s IncrementalHoareTripleChecker+Time [2022-04-05 09:31:23,667 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [2013 Valid, 1138 Invalid, 2249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [636 Valid, 1613 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-04-05 09:31:23,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1052 states. [2022-04-05 09:31:23,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1052 to 993. [2022-04-05 09:31:23,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 993 states, 782 states have (on average 1.2429667519181586) internal successors, (972), 798 states have internal predecessors, (972), 107 states have call successors, (107), 80 states have call predecessors, (107), 103 states have return successors, (138), 119 states have call predecessors, (138), 102 states have call successors, (138) [2022-04-05 09:31:23,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 993 states to 993 states and 1217 transitions. [2022-04-05 09:31:23,793 INFO L78 Accepts]: Start accepts. Automaton has 993 states and 1217 transitions. Word has length 73 [2022-04-05 09:31:23,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 09:31:23,793 INFO L478 AbstractCegarLoop]: Abstraction has 993 states and 1217 transitions. [2022-04-05 09:31:23,793 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.9285714285714284) internal successors, (55), 6 states have internal predecessors, (55), 5 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2022-04-05 09:31:23,794 INFO L276 IsEmpty]: Start isEmpty. Operand 993 states and 1217 transitions. [2022-04-05 09:31:23,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-04-05 09:31:23,795 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 09:31:23,795 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 09:31:23,795 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2022-04-05 09:31:23,796 INFO L403 AbstractCegarLoop]: === Iteration 67 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 09:31:23,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 09:31:23,796 INFO L85 PathProgramCache]: Analyzing trace with hash -529895932, now seen corresponding path program 1 times [2022-04-05 09:31:23,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 09:31:23,796 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037938913] [2022-04-05 09:31:23,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 09:31:23,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 09:31:23,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:23,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 09:31:23,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:23,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 09:31:23,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:23,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-05 09:31:23,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:23,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-05 09:31:23,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:23,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-05 09:31:23,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:23,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-05 09:31:23,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:23,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-04-05 09:31:23,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:23,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-04-05 09:31:23,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:23,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-05 09:31:23,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:23,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-05 09:31:23,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 09:31:23,985 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037938913] [2022-04-05 09:31:23,985 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1037938913] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 09:31:23,985 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 09:31:23,985 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-04-05 09:31:23,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085226068] [2022-04-05 09:31:23,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 09:31:23,986 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-04-05 09:31:23,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 09:31:23,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-04-05 09:31:23,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2022-04-05 09:31:23,986 INFO L87 Difference]: Start difference. First operand 993 states and 1217 transitions. Second operand has 15 states, 15 states have (on average 3.6666666666666665) internal successors, (55), 5 states have internal predecessors, (55), 2 states have call successors, (11), 10 states have call predecessors, (11), 3 states have return successors, (9), 4 states have call predecessors, (9), 2 states have call successors, (9) [2022-04-05 09:31:24,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 09:31:24,655 INFO L93 Difference]: Finished difference Result 1022 states and 1245 transitions. [2022-04-05 09:31:24,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-04-05 09:31:24,656 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.6666666666666665) internal successors, (55), 5 states have internal predecessors, (55), 2 states have call successors, (11), 10 states have call predecessors, (11), 3 states have return successors, (9), 4 states have call predecessors, (9), 2 states have call successors, (9) Word has length 75 [2022-04-05 09:31:24,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 09:31:24,657 INFO L225 Difference]: With dead ends: 1022 [2022-04-05 09:31:24,657 INFO L226 Difference]: Without dead ends: 945 [2022-04-05 09:31:24,657 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2022-04-05 09:31:24,658 INFO L913 BasicCegarLoop]: 320 mSDtfsCounter, 352 mSDsluCounter, 741 mSDsCounter, 0 mSdLazyCounter, 1515 mSolverCounterSat, 129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 353 SdHoareTripleChecker+Valid, 1061 SdHoareTripleChecker+Invalid, 1644 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 1515 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-04-05 09:31:24,659 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [353 Valid, 1061 Invalid, 1644 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [129 Valid, 1515 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-04-05 09:31:24,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 945 states. [2022-04-05 09:31:24,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 945 to 945. [2022-04-05 09:31:24,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 945 states, 748 states have (on average 1.2459893048128343) internal successors, (932), 764 states have internal predecessors, (932), 97 states have call successors, (97), 76 states have call predecessors, (97), 99 states have return successors, (126), 109 states have call predecessors, (126), 92 states have call successors, (126) [2022-04-05 09:31:24,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 945 states to 945 states and 1155 transitions. [2022-04-05 09:31:24,750 INFO L78 Accepts]: Start accepts. Automaton has 945 states and 1155 transitions. Word has length 75 [2022-04-05 09:31:24,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 09:31:24,750 INFO L478 AbstractCegarLoop]: Abstraction has 945 states and 1155 transitions. [2022-04-05 09:31:24,750 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.6666666666666665) internal successors, (55), 5 states have internal predecessors, (55), 2 states have call successors, (11), 10 states have call predecessors, (11), 3 states have return successors, (9), 4 states have call predecessors, (9), 2 states have call successors, (9) [2022-04-05 09:31:24,750 INFO L276 IsEmpty]: Start isEmpty. Operand 945 states and 1155 transitions. [2022-04-05 09:31:24,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-04-05 09:31:24,751 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 09:31:24,751 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 09:31:24,751 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2022-04-05 09:31:24,751 INFO L403 AbstractCegarLoop]: === Iteration 68 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 09:31:24,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 09:31:24,752 INFO L85 PathProgramCache]: Analyzing trace with hash 1642144115, now seen corresponding path program 1 times [2022-04-05 09:31:24,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 09:31:24,752 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833189620] [2022-04-05 09:31:24,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 09:31:24,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 09:31:24,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:24,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 09:31:24,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:24,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 09:31:24,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:24,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-05 09:31:24,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:24,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-05 09:31:24,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:24,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-05 09:31:24,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:24,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-04-05 09:31:24,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:24,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-04-05 09:31:24,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:24,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-05 09:31:24,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 09:31:24,886 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833189620] [2022-04-05 09:31:24,886 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1833189620] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 09:31:24,886 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 09:31:24,886 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-04-05 09:31:24,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528333583] [2022-04-05 09:31:24,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 09:31:24,886 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-04-05 09:31:24,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 09:31:24,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-04-05 09:31:24,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2022-04-05 09:31:24,887 INFO L87 Difference]: Start difference. First operand 945 states and 1155 transitions. Second operand has 12 states, 12 states have (on average 4.75) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-04-05 09:31:25,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 09:31:25,748 INFO L93 Difference]: Finished difference Result 990 states and 1203 transitions. [2022-04-05 09:31:25,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-04-05 09:31:25,748 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.75) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 73 [2022-04-05 09:31:25,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 09:31:25,750 INFO L225 Difference]: With dead ends: 990 [2022-04-05 09:31:25,750 INFO L226 Difference]: Without dead ends: 929 [2022-04-05 09:31:25,750 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2022-04-05 09:31:25,750 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 [2022-04-05 09:31:25,751 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] [2022-04-05 09:31:25,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 929 states. [2022-04-05 09:31:25,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 929 to 929. [2022-04-05 09:31:25,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 929 states, 734 states have (on average 1.2452316076294279) internal successors, (914), 750 states have internal predecessors, (914), 95 states have call successors, (95), 76 states have call predecessors, (95), 99 states have return successors, (122), 107 states have call predecessors, (122), 90 states have call successors, (122) [2022-04-05 09:31:25,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 929 states to 929 states and 1131 transitions. [2022-04-05 09:31:25,847 INFO L78 Accepts]: Start accepts. Automaton has 929 states and 1131 transitions. Word has length 73 [2022-04-05 09:31:25,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 09:31:25,847 INFO L478 AbstractCegarLoop]: Abstraction has 929 states and 1131 transitions. [2022-04-05 09:31:25,847 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.75) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-04-05 09:31:25,847 INFO L276 IsEmpty]: Start isEmpty. Operand 929 states and 1131 transitions. [2022-04-05 09:31:25,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-04-05 09:31:25,849 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 09:31:25,849 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 09:31:25,849 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2022-04-05 09:31:25,849 INFO L403 AbstractCegarLoop]: === Iteration 69 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 09:31:25,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 09:31:25,849 INFO L85 PathProgramCache]: Analyzing trace with hash 780600349, now seen corresponding path program 1 times [2022-04-05 09:31:25,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 09:31:25,850 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943541494] [2022-04-05 09:31:25,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 09:31:25,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 09:31:25,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:25,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 09:31:25,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:25,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 09:31:25,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:25,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-05 09:31:25,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:25,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-04-05 09:31:25,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:25,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-05 09:31:25,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:25,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-05 09:31:25,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:26,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-05 09:31:26,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:26,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-05 09:31:26,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:26,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-04-05 09:31:26,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:26,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-05 09:31:26,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 09:31:26,098 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943541494] [2022-04-05 09:31:26,098 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [943541494] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 09:31:26,098 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 09:31:26,098 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-04-05 09:31:26,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894983058] [2022-04-05 09:31:26,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 09:31:26,099 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-04-05 09:31:26,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 09:31:26,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-04-05 09:31:26,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2022-04-05 09:31:26,099 INFO L87 Difference]: Start difference. First operand 929 states and 1131 transitions. Second operand has 13 states, 13 states have (on average 4.230769230769231) internal successors, (55), 5 states have internal predecessors, (55), 2 states have call successors, (13), 9 states have call predecessors, (13), 3 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2022-04-05 09:31:26,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 09:31:26,874 INFO L93 Difference]: Finished difference Result 1093 states and 1333 transitions. [2022-04-05 09:31:26,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-04-05 09:31:26,874 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.230769230769231) internal successors, (55), 5 states have internal predecessors, (55), 2 states have call successors, (13), 9 states have call predecessors, (13), 3 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) Word has length 77 [2022-04-05 09:31:26,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 09:31:26,876 INFO L225 Difference]: With dead ends: 1093 [2022-04-05 09:31:26,876 INFO L226 Difference]: Without dead ends: 915 [2022-04-05 09:31:26,876 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 [2022-04-05 09:31:26,877 INFO L913 BasicCegarLoop]: 296 mSDtfsCounter, 345 mSDsluCounter, 871 mSDsCounter, 0 mSdLazyCounter, 1168 mSolverCounterSat, 122 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 347 SdHoareTripleChecker+Valid, 1167 SdHoareTripleChecker+Invalid, 1290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 122 IncrementalHoareTripleChecker+Valid, 1168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-04-05 09:31:26,877 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [347 Valid, 1167 Invalid, 1290 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [122 Valid, 1168 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-04-05 09:31:26,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 915 states. [2022-04-05 09:31:26,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 915 to 915. [2022-04-05 09:31:26,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 915 states, 720 states have (on average 1.238888888888889) internal successors, (892), 736 states have internal predecessors, (892), 95 states have call successors, (95), 76 states have call predecessors, (95), 99 states have return successors, (122), 107 states have call predecessors, (122), 90 states have call successors, (122) [2022-04-05 09:31:26,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 915 states to 915 states and 1109 transitions. [2022-04-05 09:31:26,951 INFO L78 Accepts]: Start accepts. Automaton has 915 states and 1109 transitions. Word has length 77 [2022-04-05 09:31:26,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 09:31:26,951 INFO L478 AbstractCegarLoop]: Abstraction has 915 states and 1109 transitions. [2022-04-05 09:31:26,952 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.230769230769231) internal successors, (55), 5 states have internal predecessors, (55), 2 states have call successors, (13), 9 states have call predecessors, (13), 3 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2022-04-05 09:31:26,952 INFO L276 IsEmpty]: Start isEmpty. Operand 915 states and 1109 transitions. [2022-04-05 09:31:26,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-04-05 09:31:26,953 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 09:31:26,953 INFO L499 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 09:31:26,953 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2022-04-05 09:31:26,953 INFO L403 AbstractCegarLoop]: === Iteration 70 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 09:31:26,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 09:31:26,953 INFO L85 PathProgramCache]: Analyzing trace with hash 1219602648, now seen corresponding path program 1 times [2022-04-05 09:31:26,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 09:31:26,953 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615775457] [2022-04-05 09:31:26,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 09:31:26,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 09:31:26,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:26,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 09:31:27,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:27,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 09:31:27,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:27,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-05 09:31:27,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:27,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-05 09:31:27,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:27,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-05 09:31:27,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:27,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-05 09:31:27,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:27,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-04-05 09:31:27,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:27,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-04-05 09:31:27,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:27,109 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-04-05 09:31:27,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 09:31:27,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615775457] [2022-04-05 09:31:27,109 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1615775457] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 09:31:27,109 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 09:31:27,109 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-04-05 09:31:27,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717574201] [2022-04-05 09:31:27,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 09:31:27,109 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-04-05 09:31:27,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 09:31:27,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-04-05 09:31:27,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2022-04-05 09:31:27,110 INFO L87 Difference]: Start difference. First operand 915 states and 1109 transitions. Second operand has 12 states, 12 states have (on average 4.583333333333333) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (10), 9 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-04-05 09:31:27,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 09:31:27,923 INFO L93 Difference]: Finished difference Result 960 states and 1157 transitions. [2022-04-05 09:31:27,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-04-05 09:31:27,923 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.583333333333333) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (10), 9 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 75 [2022-04-05 09:31:27,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 09:31:27,925 INFO L225 Difference]: With dead ends: 960 [2022-04-05 09:31:27,925 INFO L226 Difference]: Without dead ends: 895 [2022-04-05 09:31:27,925 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2022-04-05 09:31:27,926 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, 0.6s IncrementalHoareTripleChecker+Time [2022-04-05 09:31:27,926 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [549 Valid, 910 Invalid, 1242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [204 Valid, 1038 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-04-05 09:31:27,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 895 states. [2022-04-05 09:31:27,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 895 to 895. [2022-04-05 09:31:27,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 895 states, 704 states have (on average 1.2386363636363635) internal successors, (872), 720 states have internal predecessors, (872), 91 states have call successors, (91), 76 states have call predecessors, (91), 99 states have return successors, (118), 103 states have call predecessors, (118), 86 states have call successors, (118) [2022-04-05 09:31:27,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 895 states to 895 states and 1081 transitions. [2022-04-05 09:31:27,997 INFO L78 Accepts]: Start accepts. Automaton has 895 states and 1081 transitions. Word has length 75 [2022-04-05 09:31:27,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 09:31:27,997 INFO L478 AbstractCegarLoop]: Abstraction has 895 states and 1081 transitions. [2022-04-05 09:31:27,997 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.583333333333333) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (10), 9 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-04-05 09:31:27,997 INFO L276 IsEmpty]: Start isEmpty. Operand 895 states and 1081 transitions. [2022-04-05 09:31:27,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-04-05 09:31:27,998 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 09:31:27,999 INFO L499 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 09:31:27,999 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2022-04-05 09:31:27,999 INFO L403 AbstractCegarLoop]: === Iteration 71 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 09:31:27,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 09:31:27,999 INFO L85 PathProgramCache]: Analyzing trace with hash 461830745, now seen corresponding path program 1 times [2022-04-05 09:31:27,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 09:31:27,999 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576057965] [2022-04-05 09:31:27,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 09:31:27,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 09:31:28,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:28,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 09:31:28,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:28,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 09:31:28,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:28,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-05 09:31:28,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:28,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-05 09:31:28,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:28,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-05 09:31:28,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:28,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-04-05 09:31:28,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:28,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-04-05 09:31:28,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:28,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-04-05 09:31:28,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:28,151 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-04-05 09:31:28,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 09:31:28,151 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576057965] [2022-04-05 09:31:28,152 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [576057965] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 09:31:28,152 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1748874593] [2022-04-05 09:31:28,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 09:31:28,152 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 09:31:28,152 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 09:31:28,153 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-05 09:31:28,153 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-04-05 09:31:28,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:28,350 INFO L263 TraceCheckSpWp]: Trace formula consists of 908 conjuncts, 4 conjunts are in the unsatisfiable core [2022-04-05 09:31:28,357 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 09:31:28,429 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-05 09:31:28,429 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-05 09:31:28,429 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1748874593] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 09:31:28,430 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-05 09:31:28,430 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 12 [2022-04-05 09:31:28,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284975680] [2022-04-05 09:31:28,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 09:31:28,430 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-04-05 09:31:28,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 09:31:28,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-04-05 09:31:28,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2022-04-05 09:31:28,430 INFO L87 Difference]: Start difference. First operand 895 states and 1081 transitions. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-04-05 09:31:28,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 09:31:28,500 INFO L93 Difference]: Finished difference Result 929 states and 1113 transitions. [2022-04-05 09:31:28,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-04-05 09:31:28,500 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 77 [2022-04-05 09:31:28,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 09:31:28,501 INFO L225 Difference]: With dead ends: 929 [2022-04-05 09:31:28,501 INFO L226 Difference]: Without dead ends: 834 [2022-04-05 09:31:28,502 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2022-04-05 09:31:28,502 INFO L913 BasicCegarLoop]: 295 mSDtfsCounter, 0 mSDsluCounter, 879 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1174 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-05 09:31:28,502 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 1174 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-05 09:31:28,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 834 states. [2022-04-05 09:31:28,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 834 to 834. [2022-04-05 09:31:28,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 834 states, 658 states have (on average 1.2462006079027355) internal successors, (820), 671 states have internal predecessors, (820), 85 states have call successors, (85), 73 states have call predecessors, (85), 90 states have return successors, (106), 94 states have call predecessors, (106), 80 states have call successors, (106) [2022-04-05 09:31:28,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 834 states to 834 states and 1011 transitions. [2022-04-05 09:31:28,578 INFO L78 Accepts]: Start accepts. Automaton has 834 states and 1011 transitions. Word has length 77 [2022-04-05 09:31:28,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 09:31:28,579 INFO L478 AbstractCegarLoop]: Abstraction has 834 states and 1011 transitions. [2022-04-05 09:31:28,579 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-04-05 09:31:28,579 INFO L276 IsEmpty]: Start isEmpty. Operand 834 states and 1011 transitions. [2022-04-05 09:31:28,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-04-05 09:31:28,580 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 09:31:28,580 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 09:31:28,605 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-04-05 09:31:28,791 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 09:31:28,791 INFO L403 AbstractCegarLoop]: === Iteration 72 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 09:31:28,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 09:31:28,791 INFO L85 PathProgramCache]: Analyzing trace with hash 1363389701, now seen corresponding path program 1 times [2022-04-05 09:31:28,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 09:31:28,791 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174177416] [2022-04-05 09:31:28,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 09:31:28,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 09:31:28,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:28,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 09:31:28,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:28,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 09:31:28,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:28,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-05 09:31:28,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:28,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-04-05 09:31:28,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:28,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-05 09:31:28,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:28,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-05 09:31:28,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:28,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-05 09:31:28,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:28,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-05 09:31:28,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:28,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-05 09:31:28,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:28,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-04-05 09:31:28,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:28,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-05 09:31:28,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 09:31:28,974 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174177416] [2022-04-05 09:31:28,974 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [174177416] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 09:31:28,974 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 09:31:28,974 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-04-05 09:31:28,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706299167] [2022-04-05 09:31:28,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 09:31:28,974 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-04-05 09:31:28,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 09:31:28,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-04-05 09:31:28,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2022-04-05 09:31:28,975 INFO L87 Difference]: Start difference. First operand 834 states and 1011 transitions. Second operand has 14 states, 14 states have (on average 4.071428571428571) internal successors, (57), 6 states have internal predecessors, (57), 4 states have call successors, (14), 11 states have call predecessors, (14), 5 states have return successors, (10), 6 states have call predecessors, (10), 3 states have call successors, (10) [2022-04-05 09:31:29,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 09:31:29,572 INFO L93 Difference]: Finished difference Result 966 states and 1179 transitions. [2022-04-05 09:31:29,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-04-05 09:31:29,572 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.071428571428571) internal successors, (57), 6 states have internal predecessors, (57), 4 states have call successors, (14), 11 states have call predecessors, (14), 5 states have return successors, (10), 6 states have call predecessors, (10), 3 states have call successors, (10) Word has length 81 [2022-04-05 09:31:29,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 09:31:29,574 INFO L225 Difference]: With dead ends: 966 [2022-04-05 09:31:29,574 INFO L226 Difference]: Without dead ends: 802 [2022-04-05 09:31:29,574 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=121, Invalid=385, Unknown=0, NotChecked=0, Total=506 [2022-04-05 09:31:29,574 INFO L913 BasicCegarLoop]: 260 mSDtfsCounter, 649 mSDsluCounter, 495 mSDsCounter, 0 mSdLazyCounter, 633 mSolverCounterSat, 209 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 656 SdHoareTripleChecker+Valid, 755 SdHoareTripleChecker+Invalid, 842 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 209 IncrementalHoareTripleChecker+Valid, 633 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-04-05 09:31:29,574 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [656 Valid, 755 Invalid, 842 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [209 Valid, 633 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-04-05 09:31:29,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 802 states. [2022-04-05 09:31:29,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 802 to 802. [2022-04-05 09:31:29,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 802 states, 632 states have (on average 1.25) internal successors, (790), 643 states have internal predecessors, (790), 83 states have call successors, (83), 71 states have call predecessors, (83), 86 states have return successors, (102), 92 states have call predecessors, (102), 78 states have call successors, (102) [2022-04-05 09:31:29,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 802 states to 802 states and 975 transitions. [2022-04-05 09:31:29,635 INFO L78 Accepts]: Start accepts. Automaton has 802 states and 975 transitions. Word has length 81 [2022-04-05 09:31:29,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 09:31:29,635 INFO L478 AbstractCegarLoop]: Abstraction has 802 states and 975 transitions. [2022-04-05 09:31:29,635 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.071428571428571) internal successors, (57), 6 states have internal predecessors, (57), 4 states have call successors, (14), 11 states have call predecessors, (14), 5 states have return successors, (10), 6 states have call predecessors, (10), 3 states have call successors, (10) [2022-04-05 09:31:29,635 INFO L276 IsEmpty]: Start isEmpty. Operand 802 states and 975 transitions. [2022-04-05 09:31:29,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-04-05 09:31:29,636 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 09:31:29,636 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 09:31:29,636 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2022-04-05 09:31:29,637 INFO L403 AbstractCegarLoop]: === Iteration 73 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 09:31:29,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 09:31:29,637 INFO L85 PathProgramCache]: Analyzing trace with hash -1220432173, now seen corresponding path program 1 times [2022-04-05 09:31:29,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 09:31:29,637 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240621189] [2022-04-05 09:31:29,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 09:31:29,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 09:31:29,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:29,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 09:31:29,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:29,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 09:31:29,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:29,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-05 09:31:29,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:29,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-05 09:31:29,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:29,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-04-05 09:31:29,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:29,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-04-05 09:31:29,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:29,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-05 09:31:29,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:29,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-05 09:31:29,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:29,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-05 09:31:29,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:29,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-05 09:31:29,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 09:31:29,820 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240621189] [2022-04-05 09:31:29,820 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1240621189] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 09:31:29,820 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 09:31:29,820 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-04-05 09:31:29,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279524912] [2022-04-05 09:31:29,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 09:31:29,820 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-04-05 09:31:29,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 09:31:29,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-04-05 09:31:29,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=246, Unknown=0, NotChecked=0, Total=306 [2022-04-05 09:31:29,821 INFO L87 Difference]: Start difference. First operand 802 states and 975 transitions. Second operand has 18 states, 18 states have (on average 3.2222222222222223) internal successors, (58), 9 states have internal predecessors, (58), 5 states have call successors, (11), 10 states have call predecessors, (11), 4 states have return successors, (9), 6 states have call predecessors, (9), 5 states have call successors, (9) [2022-04-05 09:31:31,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 09:31:31,161 INFO L93 Difference]: Finished difference Result 847 states and 1020 transitions. [2022-04-05 09:31:31,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-04-05 09:31:31,161 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.2222222222222223) internal successors, (58), 9 states have internal predecessors, (58), 5 states have call successors, (11), 10 states have call predecessors, (11), 4 states have return successors, (9), 6 states have call predecessors, (9), 5 states have call successors, (9) Word has length 78 [2022-04-05 09:31:31,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 09:31:31,163 INFO L225 Difference]: With dead ends: 847 [2022-04-05 09:31:31,163 INFO L226 Difference]: Without dead ends: 714 [2022-04-05 09:31:31,164 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=271, Invalid=851, Unknown=0, NotChecked=0, Total=1122 [2022-04-05 09:31:31,164 INFO L913 BasicCegarLoop]: 425 mSDtfsCounter, 1101 mSDsluCounter, 1008 mSDsCounter, 0 mSdLazyCounter, 2361 mSolverCounterSat, 405 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s 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, 1.0s IncrementalHoareTripleChecker+Time [2022-04-05 09:31:31,164 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1103 Valid, 1433 Invalid, 2766 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [405 Valid, 2361 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-04-05 09:31:31,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 714 states. [2022-04-05 09:31:31,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 714 to 366. [2022-04-05 09:31:31,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 366 states, 288 states have (on average 1.25) internal successors, (360), 292 states have internal predecessors, (360), 40 states have call successors, (40), 35 states have call predecessors, (40), 37 states have return successors, (44), 40 states have call predecessors, (44), 36 states have call successors, (44) [2022-04-05 09:31:31,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 366 states to 366 states and 444 transitions. [2022-04-05 09:31:31,203 INFO L78 Accepts]: Start accepts. Automaton has 366 states and 444 transitions. Word has length 78 [2022-04-05 09:31:31,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 09:31:31,203 INFO L478 AbstractCegarLoop]: Abstraction has 366 states and 444 transitions. [2022-04-05 09:31:31,203 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.2222222222222223) internal successors, (58), 9 states have internal predecessors, (58), 5 states have call successors, (11), 10 states have call predecessors, (11), 4 states have return successors, (9), 6 states have call predecessors, (9), 5 states have call successors, (9) [2022-04-05 09:31:31,203 INFO L276 IsEmpty]: Start isEmpty. Operand 366 states and 444 transitions. [2022-04-05 09:31:31,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-04-05 09:31:31,204 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 09:31:31,204 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 09:31:31,204 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2022-04-05 09:31:31,204 INFO L403 AbstractCegarLoop]: === Iteration 74 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 09:31:31,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 09:31:31,205 INFO L85 PathProgramCache]: Analyzing trace with hash -1514865381, now seen corresponding path program 1 times [2022-04-05 09:31:31,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 09:31:31,205 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181128623] [2022-04-05 09:31:31,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 09:31:31,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 09:31:31,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:31,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 09:31:31,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:31,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 09:31:31,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:31,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-05 09:31:31,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:31,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-05 09:31:31,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:31,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-05 09:31:31,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:31,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-04-05 09:31:31,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:31,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-04-05 09:31:31,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:31,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-05 09:31:31,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:31,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-05 09:31:31,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 09:31:31,472 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181128623] [2022-04-05 09:31:31,472 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1181128623] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 09:31:31,472 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 09:31:31,472 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-04-05 09:31:31,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152220635] [2022-04-05 09:31:31,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 09:31:31,472 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-04-05 09:31:31,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 09:31:31,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-04-05 09:31:31,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=327, Unknown=0, NotChecked=0, Total=380 [2022-04-05 09:31:31,473 INFO L87 Difference]: Start difference. First operand 366 states and 444 transitions. Second operand has 20 states, 20 states have (on average 3.05) internal successors, (61), 9 states have internal predecessors, (61), 2 states have call successors, (10), 9 states have call predecessors, (10), 5 states have return successors, (8), 5 states have call predecessors, (8), 1 states have call successors, (8) [2022-04-05 09:31:32,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 09:31:32,020 INFO L93 Difference]: Finished difference Result 368 states and 445 transitions. [2022-04-05 09:31:32,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-04-05 09:31:32,020 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 [2022-04-05 09:31:32,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 09:31:32,021 INFO L225 Difference]: With dead ends: 368 [2022-04-05 09:31:32,021 INFO L226 Difference]: Without dead ends: 289 [2022-04-05 09:31:32,021 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=61, Invalid=401, Unknown=0, NotChecked=0, Total=462 [2022-04-05 09:31:32,021 INFO L913 BasicCegarLoop]: 219 mSDtfsCounter, 192 mSDsluCounter, 1375 mSDsCounter, 0 mSdLazyCounter, 2086 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s 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, 0.5s IncrementalHoareTripleChecker+Time [2022-04-05 09:31:32,022 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [193 Valid, 1594 Invalid, 2153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 2086 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-04-05 09:31:32,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2022-04-05 09:31:32,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 289. [2022-04-05 09:31:32,050 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) [2022-04-05 09:31:32,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 355 transitions. [2022-04-05 09:31:32,050 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 355 transitions. Word has length 79 [2022-04-05 09:31:32,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 09:31:32,050 INFO L478 AbstractCegarLoop]: Abstraction has 289 states and 355 transitions. [2022-04-05 09:31:32,050 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) [2022-04-05 09:31:32,051 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 355 transitions. [2022-04-05 09:31:32,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-04-05 09:31:32,051 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 09:31:32,051 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] [2022-04-05 09:31:32,051 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2022-04-05 09:31:32,051 INFO L403 AbstractCegarLoop]: === Iteration 75 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 09:31:32,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 09:31:32,051 INFO L85 PathProgramCache]: Analyzing trace with hash -1000162365, now seen corresponding path program 1 times [2022-04-05 09:31:32,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 09:31:32,052 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863176997] [2022-04-05 09:31:32,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 09:31:32,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 09:31:32,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:32,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 09:31:32,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:32,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 09:31:32,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:32,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-05 09:31:32,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:32,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-04-05 09:31:32,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:32,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-05 09:31:32,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:32,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-05 09:31:32,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:32,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-05 09:31:32,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:32,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-05 09:31:32,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:32,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-05 09:31:32,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:32,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-04-05 09:31:32,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:32,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-05 09:31:32,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 09:31:32,186 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863176997] [2022-04-05 09:31:32,186 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1863176997] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 09:31:32,187 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 09:31:32,187 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-04-05 09:31:32,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021144177] [2022-04-05 09:31:32,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 09:31:32,187 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-04-05 09:31:32,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 09:31:32,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-04-05 09:31:32,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2022-04-05 09:31:32,187 INFO L87 Difference]: Start difference. First operand 289 states and 355 transitions. Second operand has 12 states, 12 states have (on average 4.916666666666667) internal successors, (59), 5 states have internal predecessors, (59), 3 states have call successors, (14), 10 states have call predecessors, (14), 4 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) [2022-04-05 09:31:32,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 09:31:32,518 INFO L93 Difference]: Finished difference Result 372 states and 441 transitions. [2022-04-05 09:31:32,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-04-05 09:31:32,518 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.916666666666667) internal successors, (59), 5 states have internal predecessors, (59), 3 states have call successors, (14), 10 states have call predecessors, (14), 4 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) Word has length 83 [2022-04-05 09:31:32,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 09:31:32,519 INFO L225 Difference]: With dead ends: 372 [2022-04-05 09:31:32,519 INFO L226 Difference]: Without dead ends: 286 [2022-04-05 09:31:32,519 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 [2022-04-05 09:31:32,520 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 [2022-04-05 09:31:32,520 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [174 Valid, 680 Invalid, 512 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 436 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-04-05 09:31:32,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2022-04-05 09:31:32,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 246. [2022-04-05 09:31:32,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 189 states have (on average 1.1904761904761905) internal successors, (225), 192 states have internal predecessors, (225), 29 states have call successors, (29), 26 states have call predecessors, (29), 27 states have return successors, (30), 28 states have call predecessors, (30), 27 states have call successors, (30) [2022-04-05 09:31:32,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 284 transitions. [2022-04-05 09:31:32,544 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 284 transitions. Word has length 83 [2022-04-05 09:31:32,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 09:31:32,545 INFO L478 AbstractCegarLoop]: Abstraction has 246 states and 284 transitions. [2022-04-05 09:31:32,545 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.916666666666667) internal successors, (59), 5 states have internal predecessors, (59), 3 states have call successors, (14), 10 states have call predecessors, (14), 4 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) [2022-04-05 09:31:32,545 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 284 transitions. [2022-04-05 09:31:32,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-04-05 09:31:32,545 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 09:31:32,545 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 09:31:32,545 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2022-04-05 09:31:32,545 INFO L403 AbstractCegarLoop]: === Iteration 76 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 09:31:32,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 09:31:32,546 INFO L85 PathProgramCache]: Analyzing trace with hash -2124626258, now seen corresponding path program 1 times [2022-04-05 09:31:32,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 09:31:32,546 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259206283] [2022-04-05 09:31:32,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 09:31:32,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 09:31:32,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:32,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 09:31:32,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:32,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 09:31:32,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:32,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-05 09:31:32,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:32,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-04-05 09:31:32,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:32,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-05 09:31:32,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:32,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-05 09:31:32,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:32,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-05 09:31:32,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:32,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-05 09:31:32,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:32,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-05 09:31:32,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:32,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-05 09:31:32,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:32,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-04-05 09:31:32,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:32,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-04-05 09:31:32,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:32,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-05 09:31:32,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 09:31:32,755 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259206283] [2022-04-05 09:31:32,755 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1259206283] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 09:31:32,756 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 09:31:32,756 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-04-05 09:31:32,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058260701] [2022-04-05 09:31:32,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 09:31:32,756 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-04-05 09:31:32,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 09:31:32,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-04-05 09:31:32,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2022-04-05 09:31:32,756 INFO L87 Difference]: Start difference. First operand 246 states and 284 transitions. Second operand has 18 states, 18 states have (on average 4.055555555555555) internal successors, (73), 7 states have internal predecessors, (73), 4 states have call successors, (14), 11 states have call predecessors, (14), 3 states have return successors, (12), 5 states have call predecessors, (12), 3 states have call successors, (12) [2022-04-05 09:31:33,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 09:31:33,169 INFO L93 Difference]: Finished difference Result 299 states and 341 transitions. [2022-04-05 09:31:33,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-04-05 09:31:33,170 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.055555555555555) internal successors, (73), 7 states have internal predecessors, (73), 4 states have call successors, (14), 11 states have call predecessors, (14), 3 states have return successors, (12), 5 states have call predecessors, (12), 3 states have call successors, (12) Word has length 99 [2022-04-05 09:31:33,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 09:31:33,170 INFO L225 Difference]: With dead ends: 299 [2022-04-05 09:31:33,170 INFO L226 Difference]: Without dead ends: 265 [2022-04-05 09:31:33,170 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=141, Invalid=671, Unknown=0, NotChecked=0, Total=812 [2022-04-05 09:31:33,171 INFO L913 BasicCegarLoop]: 156 mSDtfsCounter, 289 mSDsluCounter, 924 mSDsCounter, 0 mSdLazyCounter, 794 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 294 SdHoareTripleChecker+Valid, 1080 SdHoareTripleChecker+Invalid, 896 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 794 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-04-05 09:31:33,171 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [294 Valid, 1080 Invalid, 896 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 794 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-04-05 09:31:33,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2022-04-05 09:31:33,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 244. [2022-04-05 09:31:33,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244 states, 187 states have (on average 1.1657754010695187) internal successors, (218), 190 states have internal predecessors, (218), 29 states have call successors, (29), 26 states have call predecessors, (29), 27 states have return successors, (30), 28 states have call predecessors, (30), 27 states have call successors, (30) [2022-04-05 09:31:33,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 277 transitions. [2022-04-05 09:31:33,212 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 277 transitions. Word has length 99 [2022-04-05 09:31:33,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 09:31:33,212 INFO L478 AbstractCegarLoop]: Abstraction has 244 states and 277 transitions. [2022-04-05 09:31:33,212 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.055555555555555) internal successors, (73), 7 states have internal predecessors, (73), 4 states have call successors, (14), 11 states have call predecessors, (14), 3 states have return successors, (12), 5 states have call predecessors, (12), 3 states have call successors, (12) [2022-04-05 09:31:33,212 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 277 transitions. [2022-04-05 09:31:33,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-04-05 09:31:33,213 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 09:31:33,213 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 09:31:33,213 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2022-04-05 09:31:33,213 INFO L403 AbstractCegarLoop]: === Iteration 77 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 09:31:33,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 09:31:33,213 INFO L85 PathProgramCache]: Analyzing trace with hash 515298531, now seen corresponding path program 1 times [2022-04-05 09:31:33,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 09:31:33,213 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354850246] [2022-04-05 09:31:33,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 09:31:33,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 09:31:33,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:33,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 09:31:33,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:33,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 09:31:33,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:33,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-05 09:31:33,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:33,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-04-05 09:31:33,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:33,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-05 09:31:33,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:33,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-05 09:31:33,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:33,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-05 09:31:33,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:33,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-05 09:31:33,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:33,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-05 09:31:33,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:33,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-05 09:31:33,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:33,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-04-05 09:31:33,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:33,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-04-05 09:31:33,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:33,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-05 09:31:33,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 09:31:33,428 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354850246] [2022-04-05 09:31:33,428 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1354850246] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 09:31:33,428 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 09:31:33,428 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-04-05 09:31:33,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101866976] [2022-04-05 09:31:33,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 09:31:33,429 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-04-05 09:31:33,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 09:31:33,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-04-05 09:31:33,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=275, Unknown=0, NotChecked=0, Total=342 [2022-04-05 09:31:33,429 INFO L87 Difference]: Start difference. First operand 244 states and 277 transitions. Second operand has 19 states, 19 states have (on average 3.9473684210526314) internal successors, (75), 9 states have internal predecessors, (75), 5 states have call successors, (14), 11 states have call predecessors, (14), 4 states have return successors, (12), 5 states have call predecessors, (12), 4 states have call successors, (12) [2022-04-05 09:31:34,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 09:31:34,263 INFO L93 Difference]: Finished difference Result 528 states and 598 transitions. [2022-04-05 09:31:34,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-04-05 09:31:34,263 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.9473684210526314) internal successors, (75), 9 states have internal predecessors, (75), 5 states have call successors, (14), 11 states have call predecessors, (14), 4 states have return successors, (12), 5 states have call predecessors, (12), 4 states have call successors, (12) Word has length 101 [2022-04-05 09:31:34,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 09:31:34,264 INFO L225 Difference]: With dead ends: 528 [2022-04-05 09:31:34,264 INFO L226 Difference]: Without dead ends: 422 [2022-04-05 09:31:34,264 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 239 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=245, Invalid=1315, Unknown=0, NotChecked=0, Total=1560 [2022-04-05 09:31:34,264 INFO L913 BasicCegarLoop]: 252 mSDtfsCounter, 1004 mSDsluCounter, 699 mSDsCounter, 0 mSdLazyCounter, 2081 mSolverCounterSat, 393 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s 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, 0.6s IncrementalHoareTripleChecker+Time [2022-04-05 09:31:34,265 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1005 Valid, 951 Invalid, 2474 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [393 Valid, 2081 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-04-05 09:31:34,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 422 states. [2022-04-05 09:31:34,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 422 to 359. [2022-04-05 09:31:34,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 359 states, 277 states have (on average 1.1552346570397112) internal successors, (320), 282 states have internal predecessors, (320), 41 states have call successors, (41), 38 states have call predecessors, (41), 40 states have return successors, (43), 39 states have call predecessors, (43), 39 states have call successors, (43) [2022-04-05 09:31:34,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 404 transitions. [2022-04-05 09:31:34,338 INFO L78 Accepts]: Start accepts. Automaton has 359 states and 404 transitions. Word has length 101 [2022-04-05 09:31:34,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 09:31:34,338 INFO L478 AbstractCegarLoop]: Abstraction has 359 states and 404 transitions. [2022-04-05 09:31:34,338 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.9473684210526314) internal successors, (75), 9 states have internal predecessors, (75), 5 states have call successors, (14), 11 states have call predecessors, (14), 4 states have return successors, (12), 5 states have call predecessors, (12), 4 states have call successors, (12) [2022-04-05 09:31:34,338 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states and 404 transitions. [2022-04-05 09:31:34,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-04-05 09:31:34,339 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 09:31:34,339 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 09:31:34,339 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2022-04-05 09:31:34,339 INFO L403 AbstractCegarLoop]: === Iteration 78 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 09:31:34,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 09:31:34,339 INFO L85 PathProgramCache]: Analyzing trace with hash 1453830146, now seen corresponding path program 1 times [2022-04-05 09:31:34,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 09:31:34,339 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388147897] [2022-04-05 09:31:34,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 09:31:34,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 09:31:34,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:34,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 09:31:34,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:34,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 09:31:34,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:34,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-05 09:31:34,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:34,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-04-05 09:31:34,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:34,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-05 09:31:34,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:34,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-05 09:31:34,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:34,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-05 09:31:34,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:34,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-05 09:31:34,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:34,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-05 09:31:34,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:34,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-05 09:31:34,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:34,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-04-05 09:31:34,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:34,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-04-05 09:31:34,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:34,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-05 09:31:34,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 09:31:34,543 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [388147897] [2022-04-05 09:31:34,543 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [388147897] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 09:31:34,543 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 09:31:34,544 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-04-05 09:31:34,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772349481] [2022-04-05 09:31:34,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 09:31:34,544 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-04-05 09:31:34,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 09:31:34,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-04-05 09:31:34,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2022-04-05 09:31:34,544 INFO L87 Difference]: Start difference. First operand 359 states and 404 transitions. Second operand has 17 states, 17 states have (on average 4.411764705882353) internal successors, (75), 6 states have internal predecessors, (75), 3 states have call successors, (14), 11 states have call predecessors, (14), 3 states have return successors, (12), 4 states have call predecessors, (12), 2 states have call successors, (12) [2022-04-05 09:31:35,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 09:31:35,008 INFO L93 Difference]: Finished difference Result 377 states and 423 transitions. [2022-04-05 09:31:35,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-04-05 09:31:35,008 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 4.411764705882353) internal successors, (75), 6 states have internal predecessors, (75), 3 states have call successors, (14), 11 states have call predecessors, (14), 3 states have return successors, (12), 4 states have call predecessors, (12), 2 states have call successors, (12) Word has length 101 [2022-04-05 09:31:35,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 09:31:35,009 INFO L225 Difference]: With dead ends: 377 [2022-04-05 09:31:35,009 INFO L226 Difference]: Without dead ends: 274 [2022-04-05 09:31:35,009 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=76, Invalid=266, Unknown=0, NotChecked=0, Total=342 [2022-04-05 09:31:35,010 INFO L913 BasicCegarLoop]: 160 mSDtfsCounter, 59 mSDsluCounter, 930 mSDsCounter, 0 mSdLazyCounter, 987 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 1090 SdHoareTripleChecker+Invalid, 1021 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 987 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-04-05 09:31:35,010 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [60 Valid, 1090 Invalid, 1021 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 987 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-04-05 09:31:35,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2022-04-05 09:31:35,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 146. [2022-04-05 09:31:35,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 112 states have (on average 1.125) internal successors, (126), 114 states have internal predecessors, (126), 17 states have call successors, (17), 17 states have call predecessors, (17), 16 states have return successors, (16), 15 states have call predecessors, (16), 15 states have call successors, (16) [2022-04-05 09:31:35,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 159 transitions. [2022-04-05 09:31:35,029 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 159 transitions. Word has length 101 [2022-04-05 09:31:35,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 09:31:35,029 INFO L478 AbstractCegarLoop]: Abstraction has 146 states and 159 transitions. [2022-04-05 09:31:35,029 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 4.411764705882353) internal successors, (75), 6 states have internal predecessors, (75), 3 states have call successors, (14), 11 states have call predecessors, (14), 3 states have return successors, (12), 4 states have call predecessors, (12), 2 states have call successors, (12) [2022-04-05 09:31:35,029 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 159 transitions. [2022-04-05 09:31:35,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-04-05 09:31:35,030 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 09:31:35,030 INFO L499 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 09:31:35,030 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2022-04-05 09:31:35,030 INFO L403 AbstractCegarLoop]: === Iteration 79 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 09:31:35,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 09:31:35,030 INFO L85 PathProgramCache]: Analyzing trace with hash 954691984, now seen corresponding path program 1 times [2022-04-05 09:31:35,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 09:31:35,030 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257323989] [2022-04-05 09:31:35,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 09:31:35,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 09:31:35,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:35,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 09:31:35,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:35,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 09:31:35,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:35,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-05 09:31:35,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:35,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-04-05 09:31:35,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:35,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-05 09:31:35,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:35,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-04-05 09:31:35,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:35,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-05 09:31:35,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:35,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-05 09:31:35,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:35,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-05 09:31:35,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:35,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-05 09:31:35,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:35,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-04-05 09:31:35,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:35,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-04-05 09:31:35,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:35,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-04-05 09:31:35,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:35,202 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-04-05 09:31:35,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 09:31:35,202 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257323989] [2022-04-05 09:31:35,202 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1257323989] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 09:31:35,202 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 09:31:35,202 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-04-05 09:31:35,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525713012] [2022-04-05 09:31:35,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 09:31:35,202 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-04-05 09:31:35,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 09:31:35,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-04-05 09:31:35,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=81, Unknown=0, NotChecked=0, Total=132 [2022-04-05 09:31:35,203 INFO L87 Difference]: Start difference. First operand 146 states and 159 transitions. Second operand has 12 states, 12 states have (on average 6.75) internal successors, (81), 3 states have internal predecessors, (81), 3 states have call successors, (15), 11 states have call predecessors, (15), 2 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-04-05 09:31:35,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 09:31:35,484 INFO L93 Difference]: Finished difference Result 192 states and 212 transitions. [2022-04-05 09:31:35,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-04-05 09:31:35,485 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.75) internal successors, (81), 3 states have internal predecessors, (81), 3 states have call successors, (15), 11 states have call predecessors, (15), 2 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 116 [2022-04-05 09:31:35,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 09:31:35,485 INFO L225 Difference]: With dead ends: 192 [2022-04-05 09:31:35,485 INFO L226 Difference]: Without dead ends: 158 [2022-04-05 09:31:35,485 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=75, Invalid=107, Unknown=0, NotChecked=0, Total=182 [2022-04-05 09:31:35,486 INFO L913 BasicCegarLoop]: 125 mSDtfsCounter, 115 mSDsluCounter, 251 mSDsCounter, 0 mSdLazyCounter, 300 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s 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 [2022-04-05 09:31:35,486 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] [2022-04-05 09:31:35,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2022-04-05 09:31:35,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 152. [2022-04-05 09:31:35,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 117 states have (on average 1.1196581196581197) internal successors, (131), 119 states have internal predecessors, (131), 18 states have call successors, (18), 17 states have call predecessors, (18), 16 states have return successors, (17), 16 states have call predecessors, (17), 16 states have call successors, (17) [2022-04-05 09:31:35,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 166 transitions. [2022-04-05 09:31:35,506 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 166 transitions. Word has length 116 [2022-04-05 09:31:35,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 09:31:35,506 INFO L478 AbstractCegarLoop]: Abstraction has 152 states and 166 transitions. [2022-04-05 09:31:35,506 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.75) internal successors, (81), 3 states have internal predecessors, (81), 3 states have call successors, (15), 11 states have call predecessors, (15), 2 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-04-05 09:31:35,506 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 166 transitions. [2022-04-05 09:31:35,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-04-05 09:31:35,506 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 09:31:35,507 INFO L499 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 09:31:35,507 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2022-04-05 09:31:35,507 INFO L403 AbstractCegarLoop]: === Iteration 80 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 09:31:35,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 09:31:35,507 INFO L85 PathProgramCache]: Analyzing trace with hash 1647793681, now seen corresponding path program 1 times [2022-04-05 09:31:35,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 09:31:35,507 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754031941] [2022-04-05 09:31:35,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 09:31:35,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 09:31:35,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:35,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 09:31:35,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:35,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 09:31:35,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:35,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-05 09:31:35,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:35,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-04-05 09:31:35,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:35,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-05 09:31:35,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:35,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-04-05 09:31:35,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:35,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-05 09:31:35,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:35,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-05 09:31:35,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:35,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-05 09:31:35,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:35,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-05 09:31:35,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:35,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-04-05 09:31:35,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:35,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-04-05 09:31:35,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:35,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-04-05 09:31:35,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:35,743 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-04-05 09:31:35,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 09:31:35,743 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754031941] [2022-04-05 09:31:35,743 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1754031941] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 09:31:35,743 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 09:31:35,743 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-04-05 09:31:35,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730961244] [2022-04-05 09:31:35,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 09:31:35,743 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-04-05 09:31:35,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 09:31:35,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-04-05 09:31:35,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2022-04-05 09:31:35,744 INFO L87 Difference]: Start difference. First operand 152 states and 166 transitions. Second operand has 18 states, 18 states have (on average 4.5) internal successors, (81), 8 states have internal predecessors, (81), 5 states have call successors, (15), 11 states have call predecessors, (15), 3 states have return successors, (13), 6 states have call predecessors, (13), 4 states have call successors, (13) [2022-04-05 09:31:36,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 09:31:36,549 INFO L93 Difference]: Finished difference Result 292 states and 319 transitions. [2022-04-05 09:31:36,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-04-05 09:31:36,549 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.5) internal successors, (81), 8 states have internal predecessors, (81), 5 states have call successors, (15), 11 states have call predecessors, (15), 3 states have return successors, (13), 6 states have call predecessors, (13), 4 states have call successors, (13) Word has length 116 [2022-04-05 09:31:36,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 09:31:36,550 INFO L225 Difference]: With dead ends: 292 [2022-04-05 09:31:36,550 INFO L226 Difference]: Without dead ends: 152 [2022-04-05 09:31:36,550 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 229 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=225, Invalid=1181, Unknown=0, NotChecked=0, Total=1406 [2022-04-05 09:31:36,551 INFO L913 BasicCegarLoop]: 107 mSDtfsCounter, 256 mSDsluCounter, 302 mSDsCounter, 0 mSdLazyCounter, 1176 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s 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, 0.5s IncrementalHoareTripleChecker+Time [2022-04-05 09:31:36,551 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [257 Valid, 409 Invalid, 1266 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 1176 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-04-05 09:31:36,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2022-04-05 09:31:36,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 152. [2022-04-05 09:31:36,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 117 states have (on average 1.1111111111111112) internal successors, (130), 119 states have internal predecessors, (130), 18 states have call successors, (18), 17 states have call predecessors, (18), 16 states have return successors, (17), 16 states have call predecessors, (17), 16 states have call successors, (17) [2022-04-05 09:31:36,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 165 transitions. [2022-04-05 09:31:36,571 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 165 transitions. Word has length 116 [2022-04-05 09:31:36,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 09:31:36,571 INFO L478 AbstractCegarLoop]: Abstraction has 152 states and 165 transitions. [2022-04-05 09:31:36,571 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.5) internal successors, (81), 8 states have internal predecessors, (81), 5 states have call successors, (15), 11 states have call predecessors, (15), 3 states have return successors, (13), 6 states have call predecessors, (13), 4 states have call successors, (13) [2022-04-05 09:31:36,571 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 165 transitions. [2022-04-05 09:31:36,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-04-05 09:31:36,571 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 09:31:36,571 INFO L499 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 09:31:36,572 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2022-04-05 09:31:36,572 INFO L403 AbstractCegarLoop]: === Iteration 81 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 09:31:36,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 09:31:36,572 INFO L85 PathProgramCache]: Analyzing trace with hash 2114082993, now seen corresponding path program 1 times [2022-04-05 09:31:36,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 09:31:36,572 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335235373] [2022-04-05 09:31:36,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 09:31:36,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 09:31:36,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:36,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 09:31:36,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:36,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 09:31:36,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:36,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-05 09:31:36,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:36,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-04-05 09:31:36,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:36,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-05 09:31:36,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:36,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-04-05 09:31:36,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:36,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-05 09:31:36,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:36,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-05 09:31:36,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:36,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-05 09:31:36,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:36,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-05 09:31:36,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:36,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-04-05 09:31:36,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:36,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-04-05 09:31:36,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:36,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-04-05 09:31:36,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:36,732 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-04-05 09:31:36,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 09:31:36,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335235373] [2022-04-05 09:31:36,732 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1335235373] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 09:31:36,732 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 09:31:36,732 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-04-05 09:31:36,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457632766] [2022-04-05 09:31:36,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 09:31:36,733 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-04-05 09:31:36,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 09:31:36,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-04-05 09:31:36,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=81, Unknown=0, NotChecked=0, Total=132 [2022-04-05 09:31:36,733 INFO L87 Difference]: Start difference. First operand 152 states and 165 transitions. Second operand has 12 states, 12 states have (on average 6.75) internal successors, (81), 3 states have internal predecessors, (81), 3 states have call successors, (15), 11 states have call predecessors, (15), 2 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-04-05 09:31:37,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 09:31:37,047 INFO L93 Difference]: Finished difference Result 191 states and 206 transitions. [2022-04-05 09:31:37,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-04-05 09:31:37,047 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.75) internal successors, (81), 3 states have internal predecessors, (81), 3 states have call successors, (15), 11 states have call predecessors, (15), 2 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 116 [2022-04-05 09:31:37,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 09:31:37,048 INFO L225 Difference]: With dead ends: 191 [2022-04-05 09:31:37,048 INFO L226 Difference]: Without dead ends: 158 [2022-04-05 09:31:37,048 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=75, Invalid=107, Unknown=0, NotChecked=0, Total=182 [2022-04-05 09:31:37,048 INFO L913 BasicCegarLoop]: 123 mSDtfsCounter, 51 mSDsluCounter, 266 mSDsCounter, 0 mSdLazyCounter, 358 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 389 SdHoareTripleChecker+Invalid, 384 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 358 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-04-05 09:31:37,048 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [53 Valid, 389 Invalid, 384 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 358 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-04-05 09:31:37,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2022-04-05 09:31:37,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 152. [2022-04-05 09:31:37,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 117 states have (on average 1.0940170940170941) internal successors, (128), 119 states have internal predecessors, (128), 18 states have call successors, (18), 17 states have call predecessors, (18), 16 states have return successors, (17), 16 states have call predecessors, (17), 16 states have call successors, (17) [2022-04-05 09:31:37,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 163 transitions. [2022-04-05 09:31:37,068 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 163 transitions. Word has length 116 [2022-04-05 09:31:37,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 09:31:37,068 INFO L478 AbstractCegarLoop]: Abstraction has 152 states and 163 transitions. [2022-04-05 09:31:37,068 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.75) internal successors, (81), 3 states have internal predecessors, (81), 3 states have call successors, (15), 11 states have call predecessors, (15), 2 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-04-05 09:31:37,068 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 163 transitions. [2022-04-05 09:31:37,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-04-05 09:31:37,069 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 09:31:37,069 INFO L499 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 09:31:37,069 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2022-04-05 09:31:37,069 INFO L403 AbstractCegarLoop]: === Iteration 82 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 09:31:37,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 09:31:37,069 INFO L85 PathProgramCache]: Analyzing trace with hash 1707014418, now seen corresponding path program 1 times [2022-04-05 09:31:37,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 09:31:37,069 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060588651] [2022-04-05 09:31:37,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 09:31:37,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 09:31:37,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:37,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 09:31:37,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:37,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 09:31:37,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:37,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-05 09:31:37,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:37,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-04-05 09:31:37,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:37,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-05 09:31:37,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:37,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-04-05 09:31:37,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:37,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-05 09:31:37,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:37,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-05 09:31:37,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:37,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-05 09:31:37,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:37,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-05 09:31:37,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:37,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-04-05 09:31:37,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:37,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-04-05 09:31:37,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:37,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-04-05 09:31:37,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:37,350 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-04-05 09:31:37,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 09:31:37,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060588651] [2022-04-05 09:31:37,350 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1060588651] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 09:31:37,350 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 09:31:37,350 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-04-05 09:31:37,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365993058] [2022-04-05 09:31:37,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 09:31:37,351 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-04-05 09:31:37,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 09:31:37,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-04-05 09:31:37,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=311, Unknown=0, NotChecked=0, Total=380 [2022-04-05 09:31:37,351 INFO L87 Difference]: Start difference. First operand 152 states and 163 transitions. Second operand has 20 states, 20 states have (on average 4.05) internal successors, (81), 9 states have internal predecessors, (81), 5 states have call successors, (15), 11 states have call predecessors, (15), 3 states have return successors, (13), 6 states have call predecessors, (13), 4 states have call successors, (13) [2022-04-05 09:31:37,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 09:31:37,915 INFO L93 Difference]: Finished difference Result 152 states and 163 transitions. [2022-04-05 09:31:37,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-04-05 09:31:37,916 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 4.05) internal successors, (81), 9 states have internal predecessors, (81), 5 states have call successors, (15), 11 states have call predecessors, (15), 3 states have return successors, (13), 6 states have call predecessors, (13), 4 states have call successors, (13) Word has length 116 [2022-04-05 09:31:37,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 09:31:37,916 INFO L225 Difference]: With dead ends: 152 [2022-04-05 09:31:37,916 INFO L226 Difference]: Without dead ends: 0 [2022-04-05 09:31:37,916 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=159, Invalid=833, Unknown=0, NotChecked=0, Total=992 [2022-04-05 09:31:37,917 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 [2022-04-05 09:31:37,917 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] [2022-04-05 09:31:37,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-04-05 09:31:37,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-04-05 09:31:37,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-05 09:31:37,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-04-05 09:31:37,917 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 116 [2022-04-05 09:31:37,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 09:31:37,917 INFO L478 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-04-05 09:31:37,918 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 4.05) internal successors, (81), 9 states have internal predecessors, (81), 5 states have call successors, (15), 11 states have call predecessors, (15), 3 states have return successors, (13), 6 states have call predecessors, (13), 4 states have call successors, (13) [2022-04-05 09:31:37,918 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-04-05 09:31:37,918 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-05 09:31:37,920 INFO L788 garLoopResultBuilder]: Registering result SAFE for location errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-04-05 09:31:37,920 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2022-04-05 09:31:37,921 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.