/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCTransformed.xml -s ../../../trunk/examples/settings/loopacceleration/qvasr/qvasr_64.epf -i ../../../trunk/examples/svcomp/ntdrivers-simplified/cdaudio_simpl1.cil-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-7390193 [2022-04-05 09:29:24,999 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-05 09:29:25,000 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-05 09:29:25,040 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-04-05 09:29:25,040 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-04-05 09:29:25,041 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-04-05 09:29:25,041 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-04-05 09:29:25,043 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-04-05 09:29:25,074 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-04-05 09:29:25,080 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-04-05 09:29:25,081 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-04-05 09:29:25,083 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-04-05 09:29:25,083 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-04-05 09:29:25,084 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-04-05 09:29:25,085 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-04-05 09:29:25,087 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-04-05 09:29:25,087 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-04-05 09:29:25,088 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-04-05 09:29:25,091 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-04-05 09:29:25,095 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-04-05 09:29:25,096 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-04-05 09:29:25,097 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-04-05 09:29:25,098 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-04-05 09:29:25,100 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-04-05 09:29:25,101 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-04-05 09:29:25,102 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-04-05 09:29:25,102 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-04-05 09:29:25,102 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-04-05 09:29:25,103 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-04-05 09:29:25,103 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-04-05 09:29:25,104 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2022-04-05 09:29:25,106 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-05 09:29:25,107 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-05 09:29:25,111 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-05 09:29:25,111 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 09:29:25,132 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-05 09:29:25,132 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-05 09:29:25,133 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-04-05 09:29:25,133 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-04-05 09:29:25,134 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-04-05 09:29:25,134 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-04-05 09:29:25,134 INFO L138 SettingsManager]: * Use SBE=true [2022-04-05 09:29:25,134 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-05 09:29:25,134 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-05 09:29:25,135 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-05 09:29:25,135 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-05 09:29:25,135 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-05 09:29:25,135 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-05 09:29:25,135 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-05 09:29:25,135 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-05 09:29:25,135 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-05 09:29:25,135 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-05 09:29:25,135 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-04-05 09:29:25,135 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-05 09:29:25,136 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-05 09:29:25,136 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-05 09:29:25,136 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-04-05 09:29:25,136 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-04-05 09:29:25,136 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-04-05 09:29:25,136 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-04-05 09:29:25,136 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-04-05 09:29:25,137 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-04-05 09:29:25,137 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-04-05 09:29:25,137 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-04-05 09:29:25,137 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-04-05 09:29:25,332 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-05 09:29:25,356 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-05 09:29:25,358 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-05 09:29:25,358 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-05 09:29:25,359 INFO L275 PluginConnector]: CDTParser initialized [2022-04-05 09:29:25,360 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ntdrivers-simplified/cdaudio_simpl1.cil-1.c [2022-04-05 09:29:25,396 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/31d4f367a/ba13afcfd4da4dca808ef88272b932d9/FLAG4136330bd [2022-04-05 09:29:25,850 INFO L306 CDTParser]: Found 1 translation units. [2022-04-05 09:29:25,850 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ntdrivers-simplified/cdaudio_simpl1.cil-1.c [2022-04-05 09:29:25,861 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/31d4f367a/ba13afcfd4da4dca808ef88272b932d9/FLAG4136330bd [2022-04-05 09:29:26,194 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/31d4f367a/ba13afcfd4da4dca808ef88272b932d9 [2022-04-05 09:29:26,196 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-05 09:29:26,197 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-04-05 09:29:26,203 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-05 09:29:26,203 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-05 09:29:26,205 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-05 09:29:26,205 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.04 09:29:26" (1/1) ... [2022-04-05 09:29:26,206 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b7c809 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 09:29:26,206 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.04 09:29:26" (1/1) ... [2022-04-05 09:29:26,215 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-05 09:29:26,282 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-05 09:29:26,405 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ntdrivers-simplified/cdaudio_simpl1.cil-1.c[2074,2087] [2022-04-05 09:29:26,525 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-05 09:29:26,531 INFO L203 MainTranslator]: Completed pre-run [2022-04-05 09:29:26,538 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ntdrivers-simplified/cdaudio_simpl1.cil-1.c[2074,2087] [2022-04-05 09:29:26,591 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-05 09:29:26,601 INFO L208 MainTranslator]: Completed translation [2022-04-05 09:29:26,601 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 09:29:26 WrapperNode [2022-04-05 09:29:26,601 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-05 09:29:26,602 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-05 09:29:26,602 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-05 09:29:26,602 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-05 09:29:26,618 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 09:29:26,618 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 09:29:26,642 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 09:29:26,642 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 09:29:26,689 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 09:29:26,698 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 09:29:26,718 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 09:29:26,725 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-05 09:29:26,725 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-05 09:29:26,726 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-05 09:29:26,726 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-05 09:29:26,728 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 09:29:26,747 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-05 09:29:26,757 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 09:29:26,775 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 09:29:26,777 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 09:29:26,801 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-04-05 09:29:26,801 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-05 09:29:26,802 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-04-05 09:29:26,802 INFO L138 BoogieDeclarations]: Found implementation of procedure errorFn [2022-04-05 09:29:26,802 INFO L138 BoogieDeclarations]: Found implementation of procedure _BLAST_init [2022-04-05 09:29:26,802 INFO L138 BoogieDeclarations]: Found implementation of procedure SendSrbSynchronous [2022-04-05 09:29:26,802 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioSignalCompletion [2022-04-05 09:29:26,803 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioStartDevice [2022-04-05 09:29:26,804 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioPnp [2022-04-05 09:29:26,804 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioDeviceControl [2022-04-05 09:29:26,804 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioSendToNextDriver [2022-04-05 09:29:26,804 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioIsPlayActive [2022-04-05 09:29:26,804 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudio535DeviceControl [2022-04-05 09:29:26,804 INFO L138 BoogieDeclarations]: Found implementation of procedure AG_SetStatusAndReturn [2022-04-05 09:29:26,805 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudio435DeviceControl [2022-04-05 09:29:26,805 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioAtapiDeviceControl [2022-04-05 09:29:26,805 INFO L138 BoogieDeclarations]: Found implementation of procedure HpCdrProcessLastSession [2022-04-05 09:29:26,805 INFO L138 BoogieDeclarations]: Found implementation of procedure HPCdrCompletion [2022-04-05 09:29:26,805 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioHPCdrDeviceControl [2022-04-05 09:29:26,805 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioForwardIrpSynchronous [2022-04-05 09:29:26,805 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioUnload [2022-04-05 09:29:26,805 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioPower [2022-04-05 09:29:26,805 INFO L138 BoogieDeclarations]: Found implementation of procedure stub_driver_init [2022-04-05 09:29:26,805 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-04-05 09:29:26,805 INFO L138 BoogieDeclarations]: Found implementation of procedure stubMoreProcessingRequired [2022-04-05 09:29:26,805 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCallDriver [2022-04-05 09:29:26,805 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCompleteRequest [2022-04-05 09:29:26,805 INFO L138 BoogieDeclarations]: Found implementation of procedure KeSetEvent [2022-04-05 09:29:26,805 INFO L138 BoogieDeclarations]: Found implementation of procedure KeWaitForSingleObject [2022-04-05 09:29:26,805 INFO L138 BoogieDeclarations]: Found implementation of procedure PoCallDriver [2022-04-05 09:29:26,806 INFO L138 BoogieDeclarations]: Found implementation of procedure ZwClose [2022-04-05 09:29:26,806 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-04-05 09:29:26,806 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-04-05 09:29:26,806 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-04-05 09:29:26,806 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-05 09:29:26,806 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2022-04-05 09:29:26,806 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-04-05 09:29:26,806 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2022-04-05 09:29:26,806 INFO L130 BoogieDeclarations]: Found specification of procedure SendSrbSynchronous [2022-04-05 09:29:26,806 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioSignalCompletion [2022-04-05 09:29:26,807 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioStartDevice [2022-04-05 09:29:26,807 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioPnp [2022-04-05 09:29:26,807 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioDeviceControl [2022-04-05 09:29:26,807 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioSendToNextDriver [2022-04-05 09:29:26,807 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioIsPlayActive [2022-04-05 09:29:26,807 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudio535DeviceControl [2022-04-05 09:29:26,807 INFO L130 BoogieDeclarations]: Found specification of procedure AG_SetStatusAndReturn [2022-04-05 09:29:26,807 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudio435DeviceControl [2022-04-05 09:29:26,807 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioAtapiDeviceControl [2022-04-05 09:29:26,807 INFO L130 BoogieDeclarations]: Found specification of procedure HPCdrCompletion [2022-04-05 09:29:26,807 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioHPCdrDeviceControl [2022-04-05 09:29:26,807 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioForwardIrpSynchronous [2022-04-05 09:29:26,807 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioPower [2022-04-05 09:29:26,807 INFO L130 BoogieDeclarations]: Found specification of procedure IofCallDriver [2022-04-05 09:29:26,807 INFO L130 BoogieDeclarations]: Found specification of procedure KeSetEvent [2022-04-05 09:29:26,807 INFO L130 BoogieDeclarations]: Found specification of procedure KeWaitForSingleObject [2022-04-05 09:29:26,808 INFO L130 BoogieDeclarations]: Found specification of procedure PoCallDriver [2022-04-05 09:29:26,808 INFO L130 BoogieDeclarations]: Found specification of procedure ZwClose [2022-04-05 09:29:26,808 INFO L130 BoogieDeclarations]: Found specification of procedure IofCompleteRequest [2022-04-05 09:29:26,808 INFO L130 BoogieDeclarations]: Found specification of procedure errorFn [2022-04-05 09:29:26,808 INFO L130 BoogieDeclarations]: Found specification of procedure _BLAST_init [2022-04-05 09:29:26,809 INFO L130 BoogieDeclarations]: Found specification of procedure HpCdrProcessLastSession [2022-04-05 09:29:26,809 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioUnload [2022-04-05 09:29:26,809 INFO L130 BoogieDeclarations]: Found specification of procedure stub_driver_init [2022-04-05 09:29:26,809 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-04-05 09:29:26,809 INFO L130 BoogieDeclarations]: Found specification of procedure stubMoreProcessingRequired [2022-04-05 09:29:26,809 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-04-05 09:29:26,809 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-05 09:29:26,810 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-05 09:29:26,810 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-05 09:29:26,810 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-04-05 09:29:26,810 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-05 09:29:27,071 INFO L234 CfgBuilder]: Building ICFG [2022-04-05 09:29:27,073 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-05 09:29:27,187 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-05 09:29:27,262 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume !false; [2022-04-05 09:29:27,262 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##14: assume false; [2022-04-05 09:29:27,271 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-05 09:29:27,291 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##18: assume !false; [2022-04-05 09:29:27,291 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##17: assume false; [2022-04-05 09:29:27,306 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-05 09:29:27,318 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##16: assume !false; [2022-04-05 09:29:27,318 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume false; [2022-04-05 09:29:27,387 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-05 09:29:27,420 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##6: assume !false; [2022-04-05 09:29:27,421 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint L305: #res := 0; [2022-04-05 09:29:27,421 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##5: assume false; [2022-04-05 09:29:27,426 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-05 09:29:27,521 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##21: assume false; [2022-04-05 09:29:27,521 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##22: assume !false; [2022-04-05 09:29:27,521 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-05 09:29:27,539 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##21: assume !false; [2022-04-05 09:29:27,539 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##20: assume false; [2022-04-05 09:29:27,558 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-05 09:29:27,567 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##10: assume !false; [2022-04-05 09:29:27,568 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##9: assume false; [2022-04-05 09:29:27,570 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-05 09:29:27,703 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##26: assume !false; [2022-04-05 09:29:27,703 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##25: assume false; [2022-04-05 09:29:27,711 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-05 09:29:27,714 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-04-05 09:29:27,714 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-04-05 09:29:27,734 INFO L275 CfgBuilder]: Performing block encoding [2022-04-05 09:29:27,742 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-05 09:29:27,743 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-04-05 09:29:27,745 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.04 09:29:27 BoogieIcfgContainer [2022-04-05 09:29:27,745 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-05 09:29:27,746 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-04-05 09:29:27,746 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-04-05 09:29:27,747 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-04-05 09:29:27,749 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.04 09:29:27" (1/1) ... [2022-04-05 09:29:27,750 INFO L168 ansformationObserver]: Applying ICFG transformation LOOP_ACCELERATION_QVASR [2022-04-05 09:29:27,803 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 05.04 09:29:27 BasicIcfg [2022-04-05 09:29:27,803 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-04-05 09:29:27,806 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-05 09:29:27,806 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-05 09:29:27,808 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-05 09:29:27,808 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.04 09:29:26" (1/4) ... [2022-04-05 09:29:27,811 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15f0564f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.04 09:29:27, skipping insertion in model container [2022-04-05 09:29:27,811 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 09:29:27,812 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15f0564f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.04 09:29:27, skipping insertion in model container [2022-04-05 09:29:27,812 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.04 09:29:27" (3/4) ... [2022-04-05 09:29:27,812 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15f0564f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.04 09:29:27, skipping insertion in model container [2022-04-05 09:29:27,812 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 05.04 09:29:27" (4/4) ... [2022-04-05 09:29:27,813 INFO L111 eAbstractionObserver]: Analyzing ICFG cdaudio_simpl1.cil-1.cqvasr [2022-04-05 09:29:27,819 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-04-05 09:29:27,820 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-04-05 09:29:27,859 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-05 09:29:27,864 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 09:29:27,865 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-04-05 09:29:27,894 INFO L276 IsEmpty]: Start isEmpty. Operand has 517 states, 383 states have (on average 1.4882506527415145) internal successors, (570), 404 states have internal predecessors, (570), 103 states have call successors, (103), 29 states have call predecessors, (103), 29 states have return successors, (103), 98 states have call predecessors, (103), 103 states have call successors, (103) [2022-04-05 09:29:27,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-04-05 09:29:27,900 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 09:29:27,900 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 09:29:27,901 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 09:29:27,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 09:29:27,904 INFO L85 PathProgramCache]: Analyzing trace with hash 784814983, now seen corresponding path program 1 times [2022-04-05 09:29:27,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 09:29:27,910 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107100936] [2022-04-05 09:29:27,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 09:29:27,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 09:29:28,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:29:28,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 09:29:28,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:29:28,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 09:29:28,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:29:28,260 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 09:29:28,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 09:29:28,261 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107100936] [2022-04-05 09:29:28,261 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1107100936] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 09:29:28,261 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 09:29:28,262 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-05 09:29:28,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659096266] [2022-04-05 09:29:28,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 09:29:28,266 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-04-05 09:29:28,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 09:29:28,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-04-05 09:29:28,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-04-05 09:29:28,299 INFO L87 Difference]: Start difference. First operand has 517 states, 383 states have (on average 1.4882506527415145) internal successors, (570), 404 states have internal predecessors, (570), 103 states have call successors, (103), 29 states have call predecessors, (103), 29 states have return successors, (103), 98 states have call predecessors, (103), 103 states have call successors, (103) Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 3 states have internal predecessors, (14), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-04-05 09:29:30,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 09:29:30,126 INFO L93 Difference]: Finished difference Result 1047 states and 1683 transitions. [2022-04-05 09:29:30,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-05 09:29:30,132 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 09:29:30,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 09:29:30,142 INFO L225 Difference]: With dead ends: 1047 [2022-04-05 09:29:30,142 INFO L226 Difference]: Without dead ends: 665 [2022-04-05 09:29:30,146 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 09:29:30,148 INFO L913 BasicCegarLoop]: 741 mSDtfsCounter, 399 mSDsluCounter, 272 mSDsCounter, 0 mSdLazyCounter, 1595 mSolverCounterSat, 158 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 400 SdHoareTripleChecker+Valid, 1013 SdHoareTripleChecker+Invalid, 1753 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 158 IncrementalHoareTripleChecker+Valid, 1595 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-04-05 09:29:30,149 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [400 Valid, 1013 Invalid, 1753 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [158 Valid, 1595 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-04-05 09:29:30,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 665 states. [2022-04-05 09:29:30,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 665 to 509. [2022-04-05 09:29:30,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 509 states, 378 states have (on average 1.4576719576719577) internal successors, (551), 397 states have internal predecessors, (551), 103 states have call successors, (103), 29 states have call predecessors, (103), 27 states have return successors, (86), 86 states have call predecessors, (86), 86 states have call successors, (86) [2022-04-05 09:29:30,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 509 states to 509 states and 740 transitions. [2022-04-05 09:29:30,216 INFO L78 Accepts]: Start accepts. Automaton has 509 states and 740 transitions. Word has length 20 [2022-04-05 09:29:30,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 09:29:30,217 INFO L478 AbstractCegarLoop]: Abstraction has 509 states and 740 transitions. [2022-04-05 09:29:30,217 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 09:29:30,217 INFO L276 IsEmpty]: Start isEmpty. Operand 509 states and 740 transitions. [2022-04-05 09:29:30,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-04-05 09:29:30,218 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 09:29:30,218 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 09:29:30,218 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-04-05 09:29:30,218 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 09:29:30,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 09:29:30,219 INFO L85 PathProgramCache]: Analyzing trace with hash -30338372, now seen corresponding path program 1 times [2022-04-05 09:29:30,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 09:29:30,219 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059631952] [2022-04-05 09:29:30,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 09:29:30,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 09:29:30,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:29:30,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 09:29:30,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:29:30,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 09:29:30,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:29:30,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-05 09:29:30,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:29:30,323 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 09:29:30,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 09:29:30,323 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059631952] [2022-04-05 09:29:30,323 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059631952] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 09:29:30,323 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 09:29:30,323 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-04-05 09:29:30,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436257802] [2022-04-05 09:29:30,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 09:29:30,324 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-05 09:29:30,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 09:29:30,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-05 09:29:30,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-04-05 09:29:30,325 INFO L87 Difference]: Start difference. First operand 509 states and 740 transitions. Second operand has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 3 states have internal predecessors, (16), 3 states have call successors, (6), 6 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-04-05 09:29:31,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 09:29:31,615 INFO L93 Difference]: Finished difference Result 967 states and 1429 transitions. [2022-04-05 09:29:31,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-05 09:29:31,616 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 09:29:31,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 09:29:31,620 INFO L225 Difference]: With dead ends: 967 [2022-04-05 09:29:31,620 INFO L226 Difference]: Without dead ends: 846 [2022-04-05 09:29:31,621 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 09:29:31,622 INFO L913 BasicCegarLoop]: 851 mSDtfsCounter, 1891 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 927 mSolverCounterSat, 586 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1895 SdHoareTripleChecker+Valid, 1023 SdHoareTripleChecker+Invalid, 1513 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 586 IncrementalHoareTripleChecker+Valid, 927 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-04-05 09:29:31,622 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1895 Valid, 1023 Invalid, 1513 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [586 Valid, 927 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-04-05 09:29:31,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 846 states. [2022-04-05 09:29:31,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 846 to 664. [2022-04-05 09:29:31,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 664 states, 502 states have (on average 1.408366533864542) internal successors, (707), 510 states have internal predecessors, (707), 112 states have call successors, (112), 40 states have call predecessors, (112), 49 states have return successors, (145), 119 states have call predecessors, (145), 99 states have call successors, (145) [2022-04-05 09:29:31,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 664 states to 664 states and 964 transitions. [2022-04-05 09:29:31,705 INFO L78 Accepts]: Start accepts. Automaton has 664 states and 964 transitions. Word has length 25 [2022-04-05 09:29:31,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 09:29:31,706 INFO L478 AbstractCegarLoop]: Abstraction has 664 states and 964 transitions. [2022-04-05 09:29:31,706 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 09:29:31,706 INFO L276 IsEmpty]: Start isEmpty. Operand 664 states and 964 transitions. [2022-04-05 09:29:31,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-04-05 09:29:31,711 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 09:29:31,712 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 09:29:31,712 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-04-05 09:29:31,712 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 09:29:31,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 09:29:31,713 INFO L85 PathProgramCache]: Analyzing trace with hash -759392990, now seen corresponding path program 1 times [2022-04-05 09:29:31,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 09:29:31,713 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063814215] [2022-04-05 09:29:31,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 09:29:31,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 09:29:31,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:29:31,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 09:29:31,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:29:31,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 09:29:31,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:29:31,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-05 09:29:31,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:29:31,864 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 09:29:31,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 09:29:31,864 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063814215] [2022-04-05 09:29:31,865 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2063814215] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 09:29:31,865 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 09:29:31,865 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-04-05 09:29:31,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010957157] [2022-04-05 09:29:31,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 09:29:31,866 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-05 09:29:31,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 09:29:31,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-05 09:29:31,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-04-05 09:29:31,866 INFO L87 Difference]: Start difference. First operand 664 states and 964 transitions. Second operand has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 3 states have internal predecessors, (19), 3 states have call successors, (8), 6 states have call predecessors, (8), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-04-05 09:29:33,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 09:29:33,267 INFO L93 Difference]: Finished difference Result 1148 states and 1650 transitions. [2022-04-05 09:29:33,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-05 09:29:33,271 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 09:29:33,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 09:29:33,286 INFO L225 Difference]: With dead ends: 1148 [2022-04-05 09:29:33,286 INFO L226 Difference]: Without dead ends: 970 [2022-04-05 09:29:33,287 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 09:29:33,288 INFO L913 BasicCegarLoop]: 725 mSDtfsCounter, 1121 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 1647 mSolverCounterSat, 250 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1131 SdHoareTripleChecker+Valid, 886 SdHoareTripleChecker+Invalid, 1897 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 250 IncrementalHoareTripleChecker+Valid, 1647 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-04-05 09:29:33,288 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1131 Valid, 886 Invalid, 1897 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [250 Valid, 1647 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-04-05 09:29:33,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 970 states. [2022-04-05 09:29:33,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 970 to 789. [2022-04-05 09:29:33,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 789 states, 611 states have (on average 1.4042553191489362) internal successors, (858), 615 states have internal predecessors, (858), 114 states have call successors, (114), 46 states have call predecessors, (114), 63 states have return successors, (163), 130 states have call predecessors, (163), 104 states have call successors, (163) [2022-04-05 09:29:33,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 789 states to 789 states and 1135 transitions. [2022-04-05 09:29:33,323 INFO L78 Accepts]: Start accepts. Automaton has 789 states and 1135 transitions. Word has length 30 [2022-04-05 09:29:33,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 09:29:33,323 INFO L478 AbstractCegarLoop]: Abstraction has 789 states and 1135 transitions. [2022-04-05 09:29:33,323 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 09:29:33,323 INFO L276 IsEmpty]: Start isEmpty. Operand 789 states and 1135 transitions. [2022-04-05 09:29:33,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-04-05 09:29:33,324 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 09:29:33,324 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 09:29:33,325 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-04-05 09:29:33,325 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 09:29:33,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 09:29:33,325 INFO L85 PathProgramCache]: Analyzing trace with hash 1280175921, now seen corresponding path program 1 times [2022-04-05 09:29:33,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 09:29:33,325 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748542650] [2022-04-05 09:29:33,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 09:29:33,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 09:29:33,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:29:33,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 09:29:33,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:29:33,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 09:29:33,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:29:33,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-05 09:29:33,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:29:33,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-05 09:29:33,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 09:29:33,411 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748542650] [2022-04-05 09:29:33,411 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [748542650] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 09:29:33,411 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 09:29:33,411 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-04-05 09:29:33,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114599784] [2022-04-05 09:29:33,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 09:29:33,412 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-05 09:29:33,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 09:29:33,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-05 09:29:33,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-04-05 09:29:33,412 INFO L87 Difference]: Start difference. First operand 789 states and 1135 transitions. Second operand has 6 states, 6 states have (on average 3.5) internal successors, (21), 3 states have internal predecessors, (21), 2 states have call successors, (7), 5 states have call predecessors, (7), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-04-05 09:29:34,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 09:29:34,905 INFO L93 Difference]: Finished difference Result 1630 states and 2449 transitions. [2022-04-05 09:29:34,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-04-05 09:29:34,905 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 09:29:34,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 09:29:34,910 INFO L225 Difference]: With dead ends: 1630 [2022-04-05 09:29:34,910 INFO L226 Difference]: Without dead ends: 1344 [2022-04-05 09:29:34,912 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 09:29:34,920 INFO L913 BasicCegarLoop]: 1006 mSDtfsCounter, 1482 mSDsluCounter, 256 mSDsCounter, 0 mSdLazyCounter, 1324 mSolverCounterSat, 529 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1485 SdHoareTripleChecker+Valid, 1262 SdHoareTripleChecker+Invalid, 1853 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 529 IncrementalHoareTripleChecker+Valid, 1324 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-04-05 09:29:34,921 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1485 Valid, 1262 Invalid, 1853 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [529 Valid, 1324 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-04-05 09:29:34,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1344 states. [2022-04-05 09:29:34,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1344 to 907. [2022-04-05 09:29:34,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 907 states, 708 states have (on average 1.4138418079096045) internal successors, (1001), 711 states have internal predecessors, (1001), 127 states have call successors, (127), 54 states have call predecessors, (127), 71 states have return successors, (220), 144 states have call predecessors, (220), 117 states have call successors, (220) [2022-04-05 09:29:34,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 907 states to 907 states and 1348 transitions. [2022-04-05 09:29:34,973 INFO L78 Accepts]: Start accepts. Automaton has 907 states and 1348 transitions. Word has length 31 [2022-04-05 09:29:34,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 09:29:34,973 INFO L478 AbstractCegarLoop]: Abstraction has 907 states and 1348 transitions. [2022-04-05 09:29:34,974 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 09:29:34,974 INFO L276 IsEmpty]: Start isEmpty. Operand 907 states and 1348 transitions. [2022-04-05 09:29:34,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-04-05 09:29:34,974 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 09:29:34,974 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 09:29:34,975 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-04-05 09:29:34,975 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 09:29:34,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 09:29:34,975 INFO L85 PathProgramCache]: Analyzing trace with hash 998226604, now seen corresponding path program 1 times [2022-04-05 09:29:34,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 09:29:34,975 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807140280] [2022-04-05 09:29:34,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 09:29:34,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 09:29:34,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:29:35,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 09:29:35,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:29:35,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 09:29:35,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:29:35,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-05 09:29:35,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:29:35,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-05 09:29:35,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 09:29:35,135 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807140280] [2022-04-05 09:29:35,135 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1807140280] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 09:29:35,135 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 09:29:35,135 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-04-05 09:29:35,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968514714] [2022-04-05 09:29:35,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 09:29:35,136 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-04-05 09:29:35,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 09:29:35,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-04-05 09:29:35,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-04-05 09:29:35,136 INFO L87 Difference]: Start difference. First operand 907 states and 1348 transitions. Second operand has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 6 states have internal predecessors, (22), 4 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-04-05 09:29:36,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 09:29:36,955 INFO L93 Difference]: Finished difference Result 1632 states and 2483 transitions. [2022-04-05 09:29:36,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-04-05 09:29:36,955 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 09:29:36,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 09:29:36,959 INFO L225 Difference]: With dead ends: 1632 [2022-04-05 09:29:36,959 INFO L226 Difference]: Without dead ends: 1046 [2022-04-05 09:29:36,960 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 09:29:36,961 INFO L913 BasicCegarLoop]: 743 mSDtfsCounter, 2772 mSDsluCounter, 289 mSDsCounter, 0 mSdLazyCounter, 1629 mSolverCounterSat, 978 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2778 SdHoareTripleChecker+Valid, 1032 SdHoareTripleChecker+Invalid, 2607 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 978 IncrementalHoareTripleChecker+Valid, 1629 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-04-05 09:29:36,961 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [2778 Valid, 1032 Invalid, 2607 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [978 Valid, 1629 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-04-05 09:29:36,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1046 states. [2022-04-05 09:29:36,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1046 to 835. [2022-04-05 09:29:36,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 835 states, 649 states have (on average 1.399075500770416) internal successors, (908), 653 states have internal predecessors, (908), 118 states have call successors, (118), 50 states have call predecessors, (118), 67 states have return successors, (177), 134 states have call predecessors, (177), 108 states have call successors, (177) [2022-04-05 09:29:36,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 835 states to 835 states and 1203 transitions. [2022-04-05 09:29:36,999 INFO L78 Accepts]: Start accepts. Automaton has 835 states and 1203 transitions. Word has length 32 [2022-04-05 09:29:36,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 09:29:36,999 INFO L478 AbstractCegarLoop]: Abstraction has 835 states and 1203 transitions. [2022-04-05 09:29:36,999 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 09:29:36,999 INFO L276 IsEmpty]: Start isEmpty. Operand 835 states and 1203 transitions. [2022-04-05 09:29:37,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-04-05 09:29:37,000 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 09:29:37,001 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 09:29:37,001 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-04-05 09:29:37,001 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 09:29:37,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 09:29:37,001 INFO L85 PathProgramCache]: Analyzing trace with hash 936943045, now seen corresponding path program 1 times [2022-04-05 09:29:37,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 09:29:37,001 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212447107] [2022-04-05 09:29:37,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 09:29:37,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 09:29:37,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:29:37,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 09:29:37,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:29:37,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 09:29:37,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:29:37,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-05 09:29:37,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:29:37,097 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 09:29:37,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 09:29:37,098 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212447107] [2022-04-05 09:29:37,098 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1212447107] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 09:29:37,098 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 09:29:37,098 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-04-05 09:29:37,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679733898] [2022-04-05 09:29:37,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 09:29:37,098 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-05 09:29:37,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 09:29:37,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-05 09:29:37,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-04-05 09:29:37,099 INFO L87 Difference]: Start difference. First operand 835 states and 1203 transitions. Second operand has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 3 states have internal predecessors, (25), 3 states have call successors, (8), 6 states have call predecessors, (8), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-04-05 09:29:38,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 09:29:38,543 INFO L93 Difference]: Finished difference Result 965 states and 1425 transitions. [2022-04-05 09:29:38,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-05 09:29:38,543 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 09:29:38,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 09:29:38,547 INFO L225 Difference]: With dead ends: 965 [2022-04-05 09:29:38,548 INFO L226 Difference]: Without dead ends: 961 [2022-04-05 09:29:38,548 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 09:29:38,549 INFO L913 BasicCegarLoop]: 713 mSDtfsCounter, 407 mSDsluCounter, 270 mSDsCounter, 0 mSdLazyCounter, 1880 mSolverCounterSat, 142 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 408 SdHoareTripleChecker+Valid, 983 SdHoareTripleChecker+Invalid, 2022 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 142 IncrementalHoareTripleChecker+Valid, 1880 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-04-05 09:29:38,549 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [408 Valid, 983 Invalid, 2022 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [142 Valid, 1880 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-04-05 09:29:38,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 961 states. [2022-04-05 09:29:38,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 961 to 834. [2022-04-05 09:29:38,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 834 states, 649 states have (on average 1.3959938366718028) internal successors, (906), 652 states have internal predecessors, (906), 117 states have call successors, (117), 50 states have call predecessors, (117), 67 states have return successors, (177), 134 states have call predecessors, (177), 108 states have call successors, (177) [2022-04-05 09:29:38,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 834 states to 834 states and 1200 transitions. [2022-04-05 09:29:38,625 INFO L78 Accepts]: Start accepts. Automaton has 834 states and 1200 transitions. Word has length 36 [2022-04-05 09:29:38,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 09:29:38,625 INFO L478 AbstractCegarLoop]: Abstraction has 834 states and 1200 transitions. [2022-04-05 09:29:38,626 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 09:29:38,626 INFO L276 IsEmpty]: Start isEmpty. Operand 834 states and 1200 transitions. [2022-04-05 09:29:38,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-04-05 09:29:38,627 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 09:29:38,627 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 09:29:38,627 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-04-05 09:29:38,627 INFO L403 AbstractCegarLoop]: === Iteration 7 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 09:29:38,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 09:29:38,627 INFO L85 PathProgramCache]: Analyzing trace with hash -1670644950, now seen corresponding path program 1 times [2022-04-05 09:29:38,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 09:29:38,627 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426046943] [2022-04-05 09:29:38,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 09:29:38,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 09:29:38,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:29:38,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 09:29:38,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:29:38,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 09:29:38,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:29:38,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-05 09:29:38,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:29:38,761 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 09:29:38,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 09:29:38,761 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426046943] [2022-04-05 09:29:38,761 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [426046943] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 09:29:38,761 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 09:29:38,761 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-04-05 09:29:38,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428621365] [2022-04-05 09:29:38,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 09:29:38,762 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-04-05 09:29:38,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 09:29:38,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-04-05 09:29:38,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-04-05 09:29:38,764 INFO L87 Difference]: Start difference. First operand 834 states and 1200 transitions. Second operand has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 4 states have internal predecessors, (26), 3 states have call successors, (10), 6 states have call predecessors, (10), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-04-05 09:29:40,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 09:29:40,396 INFO L93 Difference]: Finished difference Result 1417 states and 2024 transitions. [2022-04-05 09:29:40,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-04-05 09:29:40,411 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 09:29:40,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 09:29:40,415 INFO L225 Difference]: With dead ends: 1417 [2022-04-05 09:29:40,415 INFO L226 Difference]: Without dead ends: 999 [2022-04-05 09:29:40,416 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-04-05 09:29:40,416 INFO L913 BasicCegarLoop]: 821 mSDtfsCounter, 764 mSDsluCounter, 432 mSDsCounter, 0 mSdLazyCounter, 2153 mSolverCounterSat, 238 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 766 SdHoareTripleChecker+Valid, 1253 SdHoareTripleChecker+Invalid, 2391 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 238 IncrementalHoareTripleChecker+Valid, 2153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-04-05 09:29:40,417 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [766 Valid, 1253 Invalid, 2391 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [238 Valid, 2153 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-04-05 09:29:40,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 999 states. [2022-04-05 09:29:40,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 999 to 736. [2022-04-05 09:29:40,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 736 states, 571 states have (on average 1.3870402802101576) internal successors, (792), 575 states have internal predecessors, (792), 106 states have call successors, (106), 45 states have call predecessors, (106), 58 states have return successors, (131), 118 states have call predecessors, (131), 97 states have call successors, (131) [2022-04-05 09:29:40,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 736 states to 736 states and 1029 transitions. [2022-04-05 09:29:40,452 INFO L78 Accepts]: Start accepts. Automaton has 736 states and 1029 transitions. Word has length 39 [2022-04-05 09:29:40,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 09:29:40,453 INFO L478 AbstractCegarLoop]: Abstraction has 736 states and 1029 transitions. [2022-04-05 09:29:40,453 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 09:29:40,453 INFO L276 IsEmpty]: Start isEmpty. Operand 736 states and 1029 transitions. [2022-04-05 09:29:40,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-04-05 09:29:40,454 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 09:29:40,454 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 09:29:40,454 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-04-05 09:29:40,454 INFO L403 AbstractCegarLoop]: === Iteration 8 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 09:29:40,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 09:29:40,454 INFO L85 PathProgramCache]: Analyzing trace with hash -1528829481, now seen corresponding path program 1 times [2022-04-05 09:29:40,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 09:29:40,455 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319597177] [2022-04-05 09:29:40,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 09:29:40,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 09:29:40,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:29:40,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 09:29:40,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:29:40,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 09:29:40,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:29:40,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-05 09:29:40,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:29:40,567 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 09:29:40,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 09:29:40,567 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [319597177] [2022-04-05 09:29:40,567 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [319597177] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 09:29:40,567 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 09:29:40,567 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-04-05 09:29:40,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387778387] [2022-04-05 09:29:40,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 09:29:40,568 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-05 09:29:40,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 09:29:40,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-05 09:29:40,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-04-05 09:29:40,568 INFO L87 Difference]: Start difference. First operand 736 states and 1029 transitions. Second operand has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 3 states have internal predecessors, (28), 3 states have call successors, (9), 6 states have call predecessors, (9), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-04-05 09:29:41,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 09:29:41,653 INFO L93 Difference]: Finished difference Result 979 states and 1409 transitions. [2022-04-05 09:29:41,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-05 09:29:41,653 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 09:29:41,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 09:29:41,657 INFO L225 Difference]: With dead ends: 979 [2022-04-05 09:29:41,657 INFO L226 Difference]: Without dead ends: 959 [2022-04-05 09:29:41,657 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 09:29:41,657 INFO L913 BasicCegarLoop]: 672 mSDtfsCounter, 1483 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 994 mSolverCounterSat, 390 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1491 SdHoareTripleChecker+Valid, 772 SdHoareTripleChecker+Invalid, 1384 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 390 IncrementalHoareTripleChecker+Valid, 994 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-04-05 09:29:41,658 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1491 Valid, 772 Invalid, 1384 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [390 Valid, 994 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-04-05 09:29:41,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 959 states. [2022-04-05 09:29:41,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 959 to 762. [2022-04-05 09:29:41,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 762 states, 595 states have (on average 1.3983193277310924) internal successors, (832), 608 states have internal predecessors, (832), 108 states have call successors, (108), 48 states have call predecessors, (108), 58 states have return successors, (124), 110 states have call predecessors, (124), 100 states have call successors, (124) [2022-04-05 09:29:41,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 762 states to 762 states and 1064 transitions. [2022-04-05 09:29:41,697 INFO L78 Accepts]: Start accepts. Automaton has 762 states and 1064 transitions. Word has length 40 [2022-04-05 09:29:41,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 09:29:41,698 INFO L478 AbstractCegarLoop]: Abstraction has 762 states and 1064 transitions. [2022-04-05 09:29:41,698 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 09:29:41,698 INFO L276 IsEmpty]: Start isEmpty. Operand 762 states and 1064 transitions. [2022-04-05 09:29:41,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-04-05 09:29:41,700 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 09:29:41,700 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 09:29:41,700 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-04-05 09:29:41,700 INFO L403 AbstractCegarLoop]: === Iteration 9 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 09:29:41,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 09:29:41,700 INFO L85 PathProgramCache]: Analyzing trace with hash 689414503, now seen corresponding path program 1 times [2022-04-05 09:29:41,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 09:29:41,701 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874949058] [2022-04-05 09:29:41,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 09:29:41,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 09:29:41,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:29:41,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 09:29:41,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:29:41,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 09:29:41,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:29:41,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-05 09:29:41,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:29:41,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-04-05 09:29:41,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:29:41,789 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 09:29:41,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 09:29:41,789 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874949058] [2022-04-05 09:29:41,789 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [874949058] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 09:29:41,789 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 09:29:41,789 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-04-05 09:29:41,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331887592] [2022-04-05 09:29:41,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 09:29:41,791 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-04-05 09:29:41,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 09:29:41,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-04-05 09:29:41,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-04-05 09:29:41,791 INFO L87 Difference]: Start difference. First operand 762 states and 1064 transitions. Second operand has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 3 states have internal predecessors, (32), 3 states have call successors, (10), 7 states have call predecessors, (10), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-04-05 09:29:43,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 09:29:43,262 INFO L93 Difference]: Finished difference Result 1167 states and 1671 transitions. [2022-04-05 09:29:43,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-04-05 09:29:43,263 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 09:29:43,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 09:29:43,266 INFO L225 Difference]: With dead ends: 1167 [2022-04-05 09:29:43,266 INFO L226 Difference]: Without dead ends: 942 [2022-04-05 09:29:43,267 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 09:29:43,267 INFO L913 BasicCegarLoop]: 791 mSDtfsCounter, 921 mSDsluCounter, 592 mSDsCounter, 0 mSdLazyCounter, 1706 mSolverCounterSat, 295 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 927 SdHoareTripleChecker+Valid, 1383 SdHoareTripleChecker+Invalid, 2001 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 295 IncrementalHoareTripleChecker+Valid, 1706 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-04-05 09:29:43,268 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [927 Valid, 1383 Invalid, 2001 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [295 Valid, 1706 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-04-05 09:29:43,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 942 states. [2022-04-05 09:29:43,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 942 to 762. [2022-04-05 09:29:43,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 762 states, 595 states have (on average 1.3966386554621848) internal successors, (831), 608 states have internal predecessors, (831), 108 states have call successors, (108), 48 states have call predecessors, (108), 58 states have return successors, (124), 110 states have call predecessors, (124), 100 states have call successors, (124) [2022-04-05 09:29:43,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 762 states to 762 states and 1063 transitions. [2022-04-05 09:29:43,361 INFO L78 Accepts]: Start accepts. Automaton has 762 states and 1063 transitions. Word has length 46 [2022-04-05 09:29:43,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 09:29:43,361 INFO L478 AbstractCegarLoop]: Abstraction has 762 states and 1063 transitions. [2022-04-05 09:29:43,361 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 09:29:43,362 INFO L276 IsEmpty]: Start isEmpty. Operand 762 states and 1063 transitions. [2022-04-05 09:29:43,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-04-05 09:29:43,377 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 09:29:43,377 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 09:29:43,377 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-04-05 09:29:43,377 INFO L403 AbstractCegarLoop]: === Iteration 10 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 09:29:43,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 09:29:43,377 INFO L85 PathProgramCache]: Analyzing trace with hash -735623654, now seen corresponding path program 1 times [2022-04-05 09:29:43,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 09:29:43,378 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735693695] [2022-04-05 09:29:43,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 09:29:43,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 09:29:43,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:29:43,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 09:29:43,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:29:43,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 09:29:43,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:29:43,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-05 09:29:43,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:29:43,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-04-05 09:29:43,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:29:43,506 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 09:29:43,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 09:29:43,506 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735693695] [2022-04-05 09:29:43,506 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1735693695] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 09:29:43,506 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 09:29:43,506 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-04-05 09:29:43,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773929387] [2022-04-05 09:29:43,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 09:29:43,506 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-04-05 09:29:43,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 09:29:43,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-04-05 09:29:43,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-04-05 09:29:43,507 INFO L87 Difference]: Start difference. First operand 762 states and 1063 transitions. Second operand has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 3 states have internal predecessors, (34), 3 states have call successors, (9), 7 states have call predecessors, (9), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-04-05 09:29:44,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 09:29:44,598 INFO L93 Difference]: Finished difference Result 964 states and 1383 transitions. [2022-04-05 09:29:44,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-04-05 09:29:44,599 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 09:29:44,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 09:29:44,610 INFO L225 Difference]: With dead ends: 964 [2022-04-05 09:29:44,610 INFO L226 Difference]: Without dead ends: 897 [2022-04-05 09:29:44,611 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=53, Unknown=0, NotChecked=0, Total=90 [2022-04-05 09:29:44,613 INFO L913 BasicCegarLoop]: 667 mSDtfsCounter, 1147 mSDsluCounter, 450 mSDsCounter, 0 mSdLazyCounter, 1167 mSolverCounterSat, 258 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1153 SdHoareTripleChecker+Valid, 1117 SdHoareTripleChecker+Invalid, 1425 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 258 IncrementalHoareTripleChecker+Valid, 1167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-04-05 09:29:44,613 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1153 Valid, 1117 Invalid, 1425 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [258 Valid, 1167 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-04-05 09:29:44,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 897 states. [2022-04-05 09:29:44,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 897 to 751. [2022-04-05 09:29:44,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 751 states, 588 states have (on average 1.3979591836734695) internal successors, (822), 601 states have internal predecessors, (822), 106 states have call successors, (106), 46 states have call predecessors, (106), 56 states have return successors, (122), 108 states have call predecessors, (122), 98 states have call successors, (122) [2022-04-05 09:29:44,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 751 states to 751 states and 1050 transitions. [2022-04-05 09:29:44,703 INFO L78 Accepts]: Start accepts. Automaton has 751 states and 1050 transitions. Word has length 47 [2022-04-05 09:29:44,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 09:29:44,703 INFO L478 AbstractCegarLoop]: Abstraction has 751 states and 1050 transitions. [2022-04-05 09:29:44,703 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 09:29:44,703 INFO L276 IsEmpty]: Start isEmpty. Operand 751 states and 1050 transitions. [2022-04-05 09:29:44,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-04-05 09:29:44,705 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 09:29:44,705 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 09:29:44,705 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-04-05 09:29:44,705 INFO L403 AbstractCegarLoop]: === Iteration 11 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 09:29:44,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 09:29:44,706 INFO L85 PathProgramCache]: Analyzing trace with hash -1452242056, now seen corresponding path program 1 times [2022-04-05 09:29:44,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 09:29:44,706 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713081613] [2022-04-05 09:29:44,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 09:29:44,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 09:29:44,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:29:44,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 09:29:44,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:29:44,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 09:29:44,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:29:44,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-05 09:29:44,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:29:44,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-04-05 09:29:44,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:29:44,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-05 09:29:44,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:29:44,821 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 09:29:44,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 09:29:44,821 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713081613] [2022-04-05 09:29:44,821 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [713081613] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 09:29:44,821 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 09:29:44,821 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-04-05 09:29:44,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31627305] [2022-04-05 09:29:44,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 09:29:44,821 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-04-05 09:29:44,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 09:29:44,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-04-05 09:29:44,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2022-04-05 09:29:44,822 INFO L87 Difference]: Start difference. First operand 751 states and 1050 transitions. Second operand has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 7 states have internal predecessors, (36), 4 states have call successors, (7), 6 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2022-04-05 09:29:46,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 09:29:46,501 INFO L93 Difference]: Finished difference Result 1067 states and 1515 transitions. [2022-04-05 09:29:46,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-04-05 09:29:46,501 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 09:29:46,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 09:29:46,504 INFO L225 Difference]: With dead ends: 1067 [2022-04-05 09:29:46,504 INFO L226 Difference]: Without dead ends: 1006 [2022-04-05 09:29:46,505 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=119, Invalid=343, Unknown=0, NotChecked=0, Total=462 [2022-04-05 09:29:46,505 INFO L913 BasicCegarLoop]: 754 mSDtfsCounter, 1817 mSDsluCounter, 987 mSDsCounter, 0 mSdLazyCounter, 3154 mSolverCounterSat, 587 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1845 SdHoareTripleChecker+Valid, 1741 SdHoareTripleChecker+Invalid, 3741 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 587 IncrementalHoareTripleChecker+Valid, 3154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-04-05 09:29:46,505 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1845 Valid, 1741 Invalid, 3741 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [587 Valid, 3154 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-04-05 09:29:46,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1006 states. [2022-04-05 09:29:46,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1006 to 794. [2022-04-05 09:29:46,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 794 states, 623 states have (on average 1.3964686998394864) internal successors, (870), 635 states have internal predecessors, (870), 110 states have call successors, (110), 49 states have call predecessors, (110), 60 states have return successors, (131), 114 states have call predecessors, (131), 102 states have call successors, (131) [2022-04-05 09:29:46,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 794 states to 794 states and 1111 transitions. [2022-04-05 09:29:46,552 INFO L78 Accepts]: Start accepts. Automaton has 794 states and 1111 transitions. Word has length 48 [2022-04-05 09:29:46,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 09:29:46,553 INFO L478 AbstractCegarLoop]: Abstraction has 794 states and 1111 transitions. [2022-04-05 09:29:46,553 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 09:29:46,553 INFO L276 IsEmpty]: Start isEmpty. Operand 794 states and 1111 transitions. [2022-04-05 09:29:46,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-04-05 09:29:46,554 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 09:29:46,554 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 09:29:46,555 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-04-05 09:29:46,555 INFO L403 AbstractCegarLoop]: === Iteration 12 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 09:29:46,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 09:29:46,555 INFO L85 PathProgramCache]: Analyzing trace with hash -1568241764, now seen corresponding path program 1 times [2022-04-05 09:29:46,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 09:29:46,555 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542531256] [2022-04-05 09:29:46,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 09:29:46,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 09:29:46,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:29:46,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 09:29:46,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:29:46,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 09:29:46,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:29:46,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-05 09:29:46,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:29:46,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-04-05 09:29:46,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:29:46,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-05 09:29:46,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:29:46,714 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 09:29:46,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 09:29:46,714 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542531256] [2022-04-05 09:29:46,715 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1542531256] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 09:29:46,715 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 09:29:46,715 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-04-05 09:29:46,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501432616] [2022-04-05 09:29:46,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 09:29:46,715 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-04-05 09:29:46,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 09:29:46,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-04-05 09:29:46,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-04-05 09:29:46,716 INFO L87 Difference]: Start difference. First operand 794 states and 1111 transitions. Second operand has 10 states, 10 states have (on average 3.8) internal successors, (38), 6 states have internal predecessors, (38), 3 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2022-04-05 09:29:48,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 09:29:48,209 INFO L93 Difference]: Finished difference Result 952 states and 1368 transitions. [2022-04-05 09:29:48,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-04-05 09:29:48,209 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 09:29:48,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 09:29:48,212 INFO L225 Difference]: With dead ends: 952 [2022-04-05 09:29:48,212 INFO L226 Difference]: Without dead ends: 924 [2022-04-05 09:29:48,213 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2022-04-05 09:29:48,213 INFO L913 BasicCegarLoop]: 652 mSDtfsCounter, 2169 mSDsluCounter, 772 mSDsCounter, 0 mSdLazyCounter, 1377 mSolverCounterSat, 650 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2180 SdHoareTripleChecker+Valid, 1424 SdHoareTripleChecker+Invalid, 2027 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 650 IncrementalHoareTripleChecker+Valid, 1377 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-04-05 09:29:48,213 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [2180 Valid, 1424 Invalid, 2027 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [650 Valid, 1377 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-04-05 09:29:48,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 924 states. [2022-04-05 09:29:48,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 924 to 797. [2022-04-05 09:29:48,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 797 states, 626 states have (on average 1.3961661341853036) internal successors, (874), 638 states have internal predecessors, (874), 110 states have call successors, (110), 49 states have call predecessors, (110), 60 states have return successors, (131), 114 states have call predecessors, (131), 102 states have call successors, (131) [2022-04-05 09:29:48,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 797 states to 797 states and 1115 transitions. [2022-04-05 09:29:48,259 INFO L78 Accepts]: Start accepts. Automaton has 797 states and 1115 transitions. Word has length 50 [2022-04-05 09:29:48,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 09:29:48,259 INFO L478 AbstractCegarLoop]: Abstraction has 797 states and 1115 transitions. [2022-04-05 09:29:48,259 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 09:29:48,259 INFO L276 IsEmpty]: Start isEmpty. Operand 797 states and 1115 transitions. [2022-04-05 09:29:48,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-04-05 09:29:48,260 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 09:29:48,261 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 09:29:48,261 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-04-05 09:29:48,261 INFO L403 AbstractCegarLoop]: === Iteration 13 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 09:29:48,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 09:29:48,261 INFO L85 PathProgramCache]: Analyzing trace with hash 1729653179, now seen corresponding path program 1 times [2022-04-05 09:29:48,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 09:29:48,261 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838705985] [2022-04-05 09:29:48,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 09:29:48,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 09:29:48,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:29:48,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 09:29:48,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:29:48,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 09:29:48,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:29:48,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-05 09:29:48,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:29:48,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-04-05 09:29:48,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:29:48,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-05 09:29:48,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:29:48,437 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 09:29:48,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 09:29:48,438 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838705985] [2022-04-05 09:29:48,438 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1838705985] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 09:29:48,438 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 09:29:48,438 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-04-05 09:29:48,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009838051] [2022-04-05 09:29:48,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 09:29:48,438 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-04-05 09:29:48,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 09:29:48,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-04-05 09:29:48,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2022-04-05 09:29:48,439 INFO L87 Difference]: Start difference. First operand 797 states and 1115 transitions. Second operand has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 8 states have internal predecessors, (38), 4 states have call successors, (7), 6 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2022-04-05 09:29:50,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 09:29:50,177 INFO L93 Difference]: Finished difference Result 978 states and 1402 transitions. [2022-04-05 09:29:50,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-04-05 09:29:50,178 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 09:29:50,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 09:29:50,181 INFO L225 Difference]: With dead ends: 978 [2022-04-05 09:29:50,181 INFO L226 Difference]: Without dead ends: 914 [2022-04-05 09:29:50,181 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 09:29:50,182 INFO L913 BasicCegarLoop]: 652 mSDtfsCounter, 2233 mSDsluCounter, 855 mSDsCounter, 0 mSdLazyCounter, 2119 mSolverCounterSat, 668 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2242 SdHoareTripleChecker+Valid, 1507 SdHoareTripleChecker+Invalid, 2787 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 668 IncrementalHoareTripleChecker+Valid, 2119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-04-05 09:29:50,182 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [2242 Valid, 1507 Invalid, 2787 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [668 Valid, 2119 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-04-05 09:29:50,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 914 states. [2022-04-05 09:29:50,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 914 to 792. [2022-04-05 09:29:50,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 792 states, 621 states have (on average 1.391304347826087) internal successors, (864), 633 states have internal predecessors, (864), 110 states have call successors, (110), 49 states have call predecessors, (110), 60 states have return successors, (131), 114 states have call predecessors, (131), 102 states have call successors, (131) [2022-04-05 09:29:50,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 792 states to 792 states and 1105 transitions. [2022-04-05 09:29:50,241 INFO L78 Accepts]: Start accepts. Automaton has 792 states and 1105 transitions. Word has length 50 [2022-04-05 09:29:50,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 09:29:50,241 INFO L478 AbstractCegarLoop]: Abstraction has 792 states and 1105 transitions. [2022-04-05 09:29:50,241 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 09:29:50,241 INFO L276 IsEmpty]: Start isEmpty. Operand 792 states and 1105 transitions. [2022-04-05 09:29:50,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-04-05 09:29:50,243 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 09:29:50,243 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, 1, 1, 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 09:29:50,243 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-04-05 09:29:50,243 INFO L403 AbstractCegarLoop]: === Iteration 14 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 09:29:50,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 09:29:50,243 INFO L85 PathProgramCache]: Analyzing trace with hash -111891045, now seen corresponding path program 1 times [2022-04-05 09:29:50,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 09:29:50,243 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076322339] [2022-04-05 09:29:50,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 09:29:50,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 09:29:50,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:29:50,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 09:29:50,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:29:50,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 09:29:50,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:29:50,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-05 09:29:50,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:29:50,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-04-05 09:29:50,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:29:50,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-05 09:29:50,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:29:50,349 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 09:29:50,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 09:29:50,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076322339] [2022-04-05 09:29:50,349 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1076322339] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 09:29:50,349 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 09:29:50,349 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-04-05 09:29:50,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822533701] [2022-04-05 09:29:50,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 09:29:50,349 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-04-05 09:29:50,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 09:29:50,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-04-05 09:29:50,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-04-05 09:29:50,350 INFO L87 Difference]: Start difference. First operand 792 states and 1105 transitions. Second operand has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (7), 6 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2022-04-05 09:29:51,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 09:29:51,646 INFO L93 Difference]: Finished difference Result 1090 states and 1555 transitions. [2022-04-05 09:29:51,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-04-05 09:29:51,646 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 09:29:51,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 09:29:51,650 INFO L225 Difference]: With dead ends: 1090 [2022-04-05 09:29:51,650 INFO L226 Difference]: Without dead ends: 1074 [2022-04-05 09:29:51,650 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 09:29:51,651 INFO L913 BasicCegarLoop]: 799 mSDtfsCounter, 1242 mSDsluCounter, 562 mSDsCounter, 0 mSdLazyCounter, 1325 mSolverCounterSat, 438 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1245 SdHoareTripleChecker+Valid, 1361 SdHoareTripleChecker+Invalid, 1763 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 438 IncrementalHoareTripleChecker+Valid, 1325 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-04-05 09:29:51,651 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1245 Valid, 1361 Invalid, 1763 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [438 Valid, 1325 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-04-05 09:29:51,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1074 states. [2022-04-05 09:29:51,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1074 to 848. [2022-04-05 09:29:51,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 848 states, 663 states have (on average 1.3725490196078431) internal successors, (910), 677 states have internal predecessors, (910), 112 states have call successors, (112), 51 states have call predecessors, (112), 72 states have return successors, (143), 126 states have call predecessors, (143), 104 states have call successors, (143) [2022-04-05 09:29:51,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 848 states to 848 states and 1165 transitions. [2022-04-05 09:29:51,737 INFO L78 Accepts]: Start accepts. Automaton has 848 states and 1165 transitions. Word has length 50 [2022-04-05 09:29:51,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 09:29:51,737 INFO L478 AbstractCegarLoop]: Abstraction has 848 states and 1165 transitions. [2022-04-05 09:29:51,737 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 09:29:51,738 INFO L276 IsEmpty]: Start isEmpty. Operand 848 states and 1165 transitions. [2022-04-05 09:29:51,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-04-05 09:29:51,739 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 09:29:51,739 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 09:29:51,739 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-04-05 09:29:51,739 INFO L403 AbstractCegarLoop]: === Iteration 15 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 09:29:51,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 09:29:51,739 INFO L85 PathProgramCache]: Analyzing trace with hash 1040673977, now seen corresponding path program 1 times [2022-04-05 09:29:51,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 09:29:51,740 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271141791] [2022-04-05 09:29:51,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 09:29:51,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 09:29:51,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:29:51,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 09:29:51,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:29:51,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 09:29:51,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:29:51,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-05 09:29:51,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:29:51,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-04-05 09:29:51,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:29:51,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-04-05 09:29:51,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:29:51,840 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 09:29:51,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 09:29:51,840 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271141791] [2022-04-05 09:29:51,841 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1271141791] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 09:29:51,841 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 09:29:51,841 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-04-05 09:29:51,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015371779] [2022-04-05 09:29:51,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 09:29:51,841 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-04-05 09:29:51,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 09:29:51,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-04-05 09:29:51,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-04-05 09:29:51,842 INFO L87 Difference]: Start difference. First operand 848 states and 1165 transitions. Second operand has 8 states, 8 states have (on average 4.875) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (10), 7 states have call predecessors, (10), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2022-04-05 09:29:52,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 09:29:52,989 INFO L93 Difference]: Finished difference Result 1183 states and 1669 transitions. [2022-04-05 09:29:52,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-04-05 09:29:52,990 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 09:29:52,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 09:29:52,992 INFO L225 Difference]: With dead ends: 1183 [2022-04-05 09:29:52,992 INFO L226 Difference]: Without dead ends: 937 [2022-04-05 09:29:52,993 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 09:29:52,993 INFO L913 BasicCegarLoop]: 641 mSDtfsCounter, 1064 mSDsluCounter, 512 mSDsCounter, 0 mSdLazyCounter, 1004 mSolverCounterSat, 365 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1097 SdHoareTripleChecker+Valid, 1153 SdHoareTripleChecker+Invalid, 1369 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 365 IncrementalHoareTripleChecker+Valid, 1004 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-04-05 09:29:52,993 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1097 Valid, 1153 Invalid, 1369 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [365 Valid, 1004 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-04-05 09:29:52,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 937 states. [2022-04-05 09:29:53,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 937 to 817. [2022-04-05 09:29:53,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 817 states, 639 states have (on average 1.3724569640062598) internal successors, (877), 651 states have internal predecessors, (877), 110 states have call successors, (110), 50 states have call predecessors, (110), 67 states have return successors, (138), 121 states have call predecessors, (138), 103 states have call successors, (138) [2022-04-05 09:29:53,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 817 states to 817 states and 1125 transitions. [2022-04-05 09:29:53,043 INFO L78 Accepts]: Start accepts. Automaton has 817 states and 1125 transitions. Word has length 54 [2022-04-05 09:29:53,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 09:29:53,043 INFO L478 AbstractCegarLoop]: Abstraction has 817 states and 1125 transitions. [2022-04-05 09:29:53,043 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 09:29:53,044 INFO L276 IsEmpty]: Start isEmpty. Operand 817 states and 1125 transitions. [2022-04-05 09:29:53,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-04-05 09:29:53,045 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 09:29:53,045 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 09:29:53,045 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-04-05 09:29:53,045 INFO L403 AbstractCegarLoop]: === Iteration 16 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 09:29:53,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 09:29:53,045 INFO L85 PathProgramCache]: Analyzing trace with hash -1255093406, now seen corresponding path program 1 times [2022-04-05 09:29:53,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 09:29:53,046 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868715674] [2022-04-05 09:29:53,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 09:29:53,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 09:29:53,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:29:53,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 09:29:53,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:29:53,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 09:29:53,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:29:53,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-05 09:29:53,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:29:53,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-05 09:29:53,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:29:53,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-05 09:29:53,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:29:53,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 09:29:53,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:29:53,195 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 09:29:53,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 09:29:53,195 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868715674] [2022-04-05 09:29:53,195 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [868715674] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 09:29:53,195 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 09:29:53,195 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-04-05 09:29:53,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759176306] [2022-04-05 09:29:53,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 09:29:53,196 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-04-05 09:29:53,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 09:29:53,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-04-05 09:29:53,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2022-04-05 09:29:53,196 INFO L87 Difference]: Start difference. First operand 817 states and 1125 transitions. Second operand has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (8), 8 states have call predecessors, (8), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2022-04-05 09:29:54,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 09:29:54,590 INFO L93 Difference]: Finished difference Result 965 states and 1370 transitions. [2022-04-05 09:29:54,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-04-05 09:29:54,591 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 09:29:54,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 09:29:54,593 INFO L225 Difference]: With dead ends: 965 [2022-04-05 09:29:54,594 INFO L226 Difference]: Without dead ends: 960 [2022-04-05 09:29:54,594 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 09:29:54,594 INFO L913 BasicCegarLoop]: 694 mSDtfsCounter, 493 mSDsluCounter, 556 mSDsCounter, 0 mSdLazyCounter, 2064 mSolverCounterSat, 151 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 496 SdHoareTripleChecker+Valid, 1250 SdHoareTripleChecker+Invalid, 2215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 151 IncrementalHoareTripleChecker+Valid, 2064 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-04-05 09:29:54,594 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [496 Valid, 1250 Invalid, 2215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [151 Valid, 2064 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-04-05 09:29:54,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 960 states. [2022-04-05 09:29:54,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 960 to 836. [2022-04-05 09:29:54,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 836 states, 655 states have (on average 1.369465648854962) internal successors, (897), 668 states have internal predecessors, (897), 111 states have call successors, (111), 51 states have call predecessors, (111), 69 states have return successors, (140), 123 states have call predecessors, (140), 104 states have call successors, (140) [2022-04-05 09:29:54,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 836 states to 836 states and 1148 transitions. [2022-04-05 09:29:54,646 INFO L78 Accepts]: Start accepts. Automaton has 836 states and 1148 transitions. Word has length 52 [2022-04-05 09:29:54,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 09:29:54,646 INFO L478 AbstractCegarLoop]: Abstraction has 836 states and 1148 transitions. [2022-04-05 09:29:54,646 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 09:29:54,646 INFO L276 IsEmpty]: Start isEmpty. Operand 836 states and 1148 transitions. [2022-04-05 09:29:54,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-04-05 09:29:54,647 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 09:29:54,647 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 09:29:54,647 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-04-05 09:29:54,648 INFO L403 AbstractCegarLoop]: === Iteration 17 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 09:29:54,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 09:29:54,648 INFO L85 PathProgramCache]: Analyzing trace with hash 856883353, now seen corresponding path program 1 times [2022-04-05 09:29:54,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 09:29:54,648 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835177704] [2022-04-05 09:29:54,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 09:29:54,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 09:29:54,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:29:54,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 09:29:54,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:29:54,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 09:29:54,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:29:54,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-05 09:29:54,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:29:54,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-04-05 09:29:54,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:29:54,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-05 09:29:54,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:29:54,783 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 09:29:54,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 09:29:54,783 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835177704] [2022-04-05 09:29:54,783 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1835177704] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 09:29:54,783 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 09:29:54,784 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-04-05 09:29:54,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664452994] [2022-04-05 09:29:54,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 09:29:54,784 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-04-05 09:29:54,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 09:29:54,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-04-05 09:29:54,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2022-04-05 09:29:54,785 INFO L87 Difference]: Start difference. First operand 836 states and 1148 transitions. Second operand has 12 states, 12 states have (on average 3.25) internal successors, (39), 6 states have internal predecessors, (39), 2 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2022-04-05 09:29:56,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 09:29:56,361 INFO L93 Difference]: Finished difference Result 981 states and 1388 transitions. [2022-04-05 09:29:56,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-04-05 09:29:56,364 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 09:29:56,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 09:29:56,367 INFO L225 Difference]: With dead ends: 981 [2022-04-05 09:29:56,367 INFO L226 Difference]: Without dead ends: 977 [2022-04-05 09:29:56,367 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2022-04-05 09:29:56,368 INFO L913 BasicCegarLoop]: 707 mSDtfsCounter, 724 mSDsluCounter, 1742 mSDsCounter, 0 mSdLazyCounter, 3855 mSolverCounterSat, 277 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 726 SdHoareTripleChecker+Valid, 2449 SdHoareTripleChecker+Invalid, 4132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 277 IncrementalHoareTripleChecker+Valid, 3855 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-04-05 09:29:56,368 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [726 Valid, 2449 Invalid, 4132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [277 Valid, 3855 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-04-05 09:29:56,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 977 states. [2022-04-05 09:29:56,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 977 to 855. [2022-04-05 09:29:56,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 855 states, 671 states have (on average 1.3621460506706409) internal successors, (914), 685 states have internal predecessors, (914), 112 states have call successors, (112), 51 states have call predecessors, (112), 71 states have return successors, (143), 126 states have call predecessors, (143), 105 states have call successors, (143) [2022-04-05 09:29:56,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 855 states to 855 states and 1169 transitions. [2022-04-05 09:29:56,440 INFO L78 Accepts]: Start accepts. Automaton has 855 states and 1169 transitions. Word has length 51 [2022-04-05 09:29:56,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 09:29:56,440 INFO L478 AbstractCegarLoop]: Abstraction has 855 states and 1169 transitions. [2022-04-05 09:29:56,440 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 09:29:56,440 INFO L276 IsEmpty]: Start isEmpty. Operand 855 states and 1169 transitions. [2022-04-05 09:29:56,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-04-05 09:29:56,442 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 09:29:56,442 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 09:29:56,442 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-04-05 09:29:56,442 INFO L403 AbstractCegarLoop]: === Iteration 18 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 09:29:56,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 09:29:56,442 INFO L85 PathProgramCache]: Analyzing trace with hash 856915097, now seen corresponding path program 1 times [2022-04-05 09:29:56,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 09:29:56,442 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099296155] [2022-04-05 09:29:56,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 09:29:56,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 09:29:56,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:29:56,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 09:29:56,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:29:56,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 09:29:56,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:29:56,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-05 09:29:56,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:29:56,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-04-05 09:29:56,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:29:56,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-05 09:29:56,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:29:56,558 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 09:29:56,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 09:29:56,559 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099296155] [2022-04-05 09:29:56,559 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2099296155] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 09:29:56,559 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 09:29:56,559 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-04-05 09:29:56,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321570115] [2022-04-05 09:29:56,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 09:29:56,559 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-04-05 09:29:56,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 09:29:56,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-04-05 09:29:56,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2022-04-05 09:29:56,560 INFO L87 Difference]: Start difference. First operand 855 states and 1169 transitions. Second operand has 12 states, 12 states have (on average 3.25) internal successors, (39), 6 states have internal predecessors, (39), 2 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2022-04-05 09:29:58,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 09:29:58,374 INFO L93 Difference]: Finished difference Result 990 states and 1399 transitions. [2022-04-05 09:29:58,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-04-05 09:29:58,374 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 09:29:58,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 09:29:58,377 INFO L225 Difference]: With dead ends: 990 [2022-04-05 09:29:58,377 INFO L226 Difference]: Without dead ends: 966 [2022-04-05 09:29:58,378 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 09:29:58,379 INFO L913 BasicCegarLoop]: 706 mSDtfsCounter, 1084 mSDsluCounter, 1673 mSDsCounter, 0 mSdLazyCounter, 3912 mSolverCounterSat, 416 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1086 SdHoareTripleChecker+Valid, 2379 SdHoareTripleChecker+Invalid, 4328 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 416 IncrementalHoareTripleChecker+Valid, 3912 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-04-05 09:29:58,379 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1086 Valid, 2379 Invalid, 4328 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [416 Valid, 3912 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-04-05 09:29:58,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 966 states. [2022-04-05 09:29:58,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 966 to 842. [2022-04-05 09:29:58,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 842 states, 660 states have (on average 1.3666666666666667) internal successors, (902), 674 states have internal predecessors, (902), 112 states have call successors, (112), 51 states have call predecessors, (112), 69 states have return successors, (141), 124 states have call predecessors, (141), 105 states have call successors, (141) [2022-04-05 09:29:58,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 842 states to 842 states and 1155 transitions. [2022-04-05 09:29:58,458 INFO L78 Accepts]: Start accepts. Automaton has 842 states and 1155 transitions. Word has length 51 [2022-04-05 09:29:58,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 09:29:58,458 INFO L478 AbstractCegarLoop]: Abstraction has 842 states and 1155 transitions. [2022-04-05 09:29:58,459 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 09:29:58,459 INFO L276 IsEmpty]: Start isEmpty. Operand 842 states and 1155 transitions. [2022-04-05 09:29:58,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-04-05 09:29:58,463 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 09:29:58,463 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 09:29:58,463 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-04-05 09:29:58,464 INFO L403 AbstractCegarLoop]: === Iteration 19 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 09:29:58,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 09:29:58,464 INFO L85 PathProgramCache]: Analyzing trace with hash -222651470, now seen corresponding path program 1 times [2022-04-05 09:29:58,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 09:29:58,464 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139561082] [2022-04-05 09:29:58,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 09:29:58,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 09:29:58,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:29:58,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 09:29:58,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:29:58,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 09:29:58,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:29:58,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-05 09:29:58,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:29:58,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-05 09:29:58,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:29:58,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-05 09:29:58,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:29:58,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 09:29:58,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:29:58,662 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 09:29:58,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 09:29:58,662 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139561082] [2022-04-05 09:29:58,662 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2139561082] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 09:29:58,662 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 09:29:58,662 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-04-05 09:29:58,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084882017] [2022-04-05 09:29:58,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 09:29:58,663 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-04-05 09:29:58,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 09:29:58,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-04-05 09:29:58,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2022-04-05 09:29:58,664 INFO L87 Difference]: Start difference. First operand 842 states and 1155 transitions. Second operand has 13 states, 13 states have (on average 3.0) internal successors, (39), 7 states have internal predecessors, (39), 3 states have call successors, (8), 8 states have call predecessors, (8), 4 states have return successors, (6), 5 states have call predecessors, (6), 2 states have call successors, (6) [2022-04-05 09:30:00,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 09:30:00,898 INFO L93 Difference]: Finished difference Result 974 states and 1378 transitions. [2022-04-05 09:30:00,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-04-05 09:30:00,899 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 09:30:00,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 09:30:00,901 INFO L225 Difference]: With dead ends: 974 [2022-04-05 09:30:00,902 INFO L226 Difference]: Without dead ends: 968 [2022-04-05 09:30:00,902 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 09:30:00,902 INFO L913 BasicCegarLoop]: 659 mSDtfsCounter, 1254 mSDsluCounter, 1013 mSDsCounter, 0 mSdLazyCounter, 3454 mSolverCounterSat, 381 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1280 SdHoareTripleChecker+Valid, 1672 SdHoareTripleChecker+Invalid, 3835 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 381 IncrementalHoareTripleChecker+Valid, 3454 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-04-05 09:30:00,903 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1280 Valid, 1672 Invalid, 3835 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [381 Valid, 3454 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-04-05 09:30:00,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 968 states. [2022-04-05 09:30:00,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 968 to 842. [2022-04-05 09:30:00,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 842 states, 660 states have (on average 1.3651515151515152) internal successors, (901), 674 states have internal predecessors, (901), 112 states have call successors, (112), 51 states have call predecessors, (112), 69 states have return successors, (141), 124 states have call predecessors, (141), 105 states have call successors, (141) [2022-04-05 09:30:00,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 842 states to 842 states and 1154 transitions. [2022-04-05 09:30:00,960 INFO L78 Accepts]: Start accepts. Automaton has 842 states and 1154 transitions. Word has length 53 [2022-04-05 09:30:00,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 09:30:00,960 INFO L478 AbstractCegarLoop]: Abstraction has 842 states and 1154 transitions. [2022-04-05 09:30:00,960 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 09:30:00,960 INFO L276 IsEmpty]: Start isEmpty. Operand 842 states and 1154 transitions. [2022-04-05 09:30:00,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-04-05 09:30:00,962 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 09:30:00,962 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 09:30:00,962 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-04-05 09:30:00,962 INFO L403 AbstractCegarLoop]: === Iteration 20 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 09:30:00,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 09:30:00,962 INFO L85 PathProgramCache]: Analyzing trace with hash 179775437, now seen corresponding path program 1 times [2022-04-05 09:30:00,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 09:30:00,962 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706742030] [2022-04-05 09:30:00,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 09:30:00,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 09:30:00,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:01,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 09:30:01,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:01,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 09:30:01,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:01,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-05 09:30:01,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:01,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-04-05 09:30:01,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:01,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-05 09:30:01,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:01,087 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 09:30:01,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 09:30:01,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706742030] [2022-04-05 09:30:01,088 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [706742030] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 09:30:01,088 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 09:30:01,088 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-04-05 09:30:01,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294422485] [2022-04-05 09:30:01,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 09:30:01,088 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-04-05 09:30:01,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 09:30:01,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-04-05 09:30:01,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-04-05 09:30:01,089 INFO L87 Difference]: Start difference. First operand 842 states and 1154 transitions. Second operand has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 5 states have internal predecessors, (40), 3 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2022-04-05 09:30:02,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 09:30:02,555 INFO L93 Difference]: Finished difference Result 979 states and 1383 transitions. [2022-04-05 09:30:02,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-04-05 09:30:02,555 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 09:30:02,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 09:30:02,558 INFO L225 Difference]: With dead ends: 979 [2022-04-05 09:30:02,558 INFO L226 Difference]: Without dead ends: 943 [2022-04-05 09:30:02,559 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 09:30:02,559 INFO L913 BasicCegarLoop]: 659 mSDtfsCounter, 1580 mSDsluCounter, 628 mSDsCounter, 0 mSdLazyCounter, 1888 mSolverCounterSat, 454 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1595 SdHoareTripleChecker+Valid, 1287 SdHoareTripleChecker+Invalid, 2342 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 454 IncrementalHoareTripleChecker+Valid, 1888 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-04-05 09:30:02,559 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1595 Valid, 1287 Invalid, 2342 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [454 Valid, 1888 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-04-05 09:30:02,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 943 states. [2022-04-05 09:30:02,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 943 to 815. [2022-04-05 09:30:02,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 815 states, 638 states have (on average 1.3746081504702194) internal successors, (877), 651 states have internal predecessors, (877), 109 states have call successors, (109), 49 states have call predecessors, (109), 67 states have return successors, (138), 121 states have call predecessors, (138), 102 states have call successors, (138) [2022-04-05 09:30:02,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 815 states to 815 states and 1124 transitions. [2022-04-05 09:30:02,618 INFO L78 Accepts]: Start accepts. Automaton has 815 states and 1124 transitions. Word has length 52 [2022-04-05 09:30:02,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 09:30:02,618 INFO L478 AbstractCegarLoop]: Abstraction has 815 states and 1124 transitions. [2022-04-05 09:30:02,618 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 09:30:02,618 INFO L276 IsEmpty]: Start isEmpty. Operand 815 states and 1124 transitions. [2022-04-05 09:30:02,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-04-05 09:30:02,619 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 09:30:02,620 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 09:30:02,620 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-04-05 09:30:02,620 INFO L403 AbstractCegarLoop]: === Iteration 21 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 09:30:02,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 09:30:02,620 INFO L85 PathProgramCache]: Analyzing trace with hash 760121073, now seen corresponding path program 1 times [2022-04-05 09:30:02,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 09:30:02,620 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397812092] [2022-04-05 09:30:02,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 09:30:02,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 09:30:02,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:02,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 09:30:02,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:02,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 09:30:02,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:02,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-05 09:30:02,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:02,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-05 09:30:02,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:02,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-05 09:30:02,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:02,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 09:30:02,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:02,821 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 09:30:02,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 09:30:02,821 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397812092] [2022-04-05 09:30:02,822 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1397812092] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 09:30:02,822 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 09:30:02,822 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-04-05 09:30:02,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897577388] [2022-04-05 09:30:02,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 09:30:02,823 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-04-05 09:30:02,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 09:30:02,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-04-05 09:30:02,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2022-04-05 09:30:02,823 INFO L87 Difference]: Start difference. First operand 815 states and 1124 transitions. Second operand has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 7 states have internal predecessors, (40), 3 states have call successors, (8), 8 states have call predecessors, (8), 4 states have return successors, (6), 5 states have call predecessors, (6), 2 states have call successors, (6) [2022-04-05 09:30:04,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 09:30:04,715 INFO L93 Difference]: Finished difference Result 945 states and 1345 transitions. [2022-04-05 09:30:04,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-04-05 09:30:04,715 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 09:30:04,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 09:30:04,718 INFO L225 Difference]: With dead ends: 945 [2022-04-05 09:30:04,718 INFO L226 Difference]: Without dead ends: 939 [2022-04-05 09:30:04,719 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 09:30:04,720 INFO L913 BasicCegarLoop]: 630 mSDtfsCounter, 1895 mSDsluCounter, 774 mSDsCounter, 0 mSdLazyCounter, 3117 mSolverCounterSat, 650 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1921 SdHoareTripleChecker+Valid, 1404 SdHoareTripleChecker+Invalid, 3767 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 650 IncrementalHoareTripleChecker+Valid, 3117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-04-05 09:30:04,720 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1921 Valid, 1404 Invalid, 3767 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [650 Valid, 3117 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-04-05 09:30:04,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 939 states. [2022-04-05 09:30:04,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 939 to 815. [2022-04-05 09:30:04,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 815 states, 638 states have (on average 1.3730407523510972) internal successors, (876), 651 states have internal predecessors, (876), 109 states have call successors, (109), 49 states have call predecessors, (109), 67 states have return successors, (138), 121 states have call predecessors, (138), 102 states have call successors, (138) [2022-04-05 09:30:04,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 815 states to 815 states and 1123 transitions. [2022-04-05 09:30:04,781 INFO L78 Accepts]: Start accepts. Automaton has 815 states and 1123 transitions. Word has length 54 [2022-04-05 09:30:04,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 09:30:04,781 INFO L478 AbstractCegarLoop]: Abstraction has 815 states and 1123 transitions. [2022-04-05 09:30:04,781 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 09:30:04,781 INFO L276 IsEmpty]: Start isEmpty. Operand 815 states and 1123 transitions. [2022-04-05 09:30:04,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-04-05 09:30:04,783 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 09:30:04,783 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 09:30:04,783 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-04-05 09:30:04,783 INFO L403 AbstractCegarLoop]: === Iteration 22 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 09:30:04,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 09:30:04,783 INFO L85 PathProgramCache]: Analyzing trace with hash 1504848646, now seen corresponding path program 1 times [2022-04-05 09:30:04,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 09:30:04,784 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246198751] [2022-04-05 09:30:04,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 09:30:04,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 09:30:04,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:04,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 09:30:04,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:04,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 09:30:04,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:04,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-05 09:30:04,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:04,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-05 09:30:04,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:04,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-05 09:30:04,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:04,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 09:30:04,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:04,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-05 09:30:04,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 09:30:04,959 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246198751] [2022-04-05 09:30:04,959 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1246198751] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 09:30:04,959 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 09:30:04,959 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-04-05 09:30:04,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061450665] [2022-04-05 09:30:04,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 09:30:04,959 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-04-05 09:30:04,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 09:30:04,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-04-05 09:30:04,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2022-04-05 09:30:04,960 INFO L87 Difference]: Start difference. First operand 815 states and 1123 transitions. Second operand has 15 states, 15 states have (on average 2.7333333333333334) internal successors, (41), 7 states have internal predecessors, (41), 3 states have call successors, (8), 8 states have call predecessors, (8), 3 states have return successors, (6), 4 states have call predecessors, (6), 2 states have call successors, (6) [2022-04-05 09:30:06,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 09:30:06,777 INFO L93 Difference]: Finished difference Result 966 states and 1372 transitions. [2022-04-05 09:30:06,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-04-05 09:30:06,780 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 09:30:06,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 09:30:06,784 INFO L225 Difference]: With dead ends: 966 [2022-04-05 09:30:06,784 INFO L226 Difference]: Without dead ends: 926 [2022-04-05 09:30:06,784 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=62, Invalid=280, Unknown=0, NotChecked=0, Total=342 [2022-04-05 09:30:06,785 INFO L913 BasicCegarLoop]: 678 mSDtfsCounter, 1069 mSDsluCounter, 1797 mSDsCounter, 0 mSdLazyCounter, 4452 mSolverCounterSat, 436 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1072 SdHoareTripleChecker+Valid, 2475 SdHoareTripleChecker+Invalid, 4888 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 436 IncrementalHoareTripleChecker+Valid, 4452 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-04-05 09:30:06,785 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1072 Valid, 2475 Invalid, 4888 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [436 Valid, 4452 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-04-05 09:30:06,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 926 states. [2022-04-05 09:30:06,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 926 to 806. [2022-04-05 09:30:06,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 806 states, 631 states have (on average 1.3565768621236134) internal successors, (856), 644 states have internal predecessors, (856), 107 states have call successors, (107), 49 states have call predecessors, (107), 67 states have return successors, (136), 119 states have call predecessors, (136), 100 states have call successors, (136) [2022-04-05 09:30:06,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 806 states to 806 states and 1099 transitions. [2022-04-05 09:30:06,845 INFO L78 Accepts]: Start accepts. Automaton has 806 states and 1099 transitions. Word has length 55 [2022-04-05 09:30:06,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 09:30:06,845 INFO L478 AbstractCegarLoop]: Abstraction has 806 states and 1099 transitions. [2022-04-05 09:30:06,845 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 09:30:06,845 INFO L276 IsEmpty]: Start isEmpty. Operand 806 states and 1099 transitions. [2022-04-05 09:30:06,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-04-05 09:30:06,847 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 09:30:06,847 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 09:30:06,847 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-04-05 09:30:06,847 INFO L403 AbstractCegarLoop]: === Iteration 23 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 09:30:06,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 09:30:06,848 INFO L85 PathProgramCache]: Analyzing trace with hash -755849646, now seen corresponding path program 1 times [2022-04-05 09:30:06,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 09:30:06,848 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329064662] [2022-04-05 09:30:06,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 09:30:06,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 09:30:06,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:06,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 09:30:06,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:06,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 09:30:06,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:06,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-05 09:30:06,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:06,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-04-05 09:30:06,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:07,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-05 09:30:07,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:07,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-05 09:30:07,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:07,072 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 09:30:07,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 09:30:07,073 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329064662] [2022-04-05 09:30:07,073 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1329064662] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 09:30:07,073 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 09:30:07,073 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-04-05 09:30:07,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971267999] [2022-04-05 09:30:07,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 09:30:07,073 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-04-05 09:30:07,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 09:30:07,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-04-05 09:30:07,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2022-04-05 09:30:07,074 INFO L87 Difference]: Start difference. First operand 806 states and 1099 transitions. Second operand has 15 states, 15 states have (on average 2.8) internal successors, (42), 7 states have internal predecessors, (42), 2 states have call successors, (8), 7 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 1 states have call successors, (6) [2022-04-05 09:30:09,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 09:30:09,916 INFO L93 Difference]: Finished difference Result 942 states and 1326 transitions. [2022-04-05 09:30:09,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-04-05 09:30:09,916 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 09:30:09,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 09:30:09,919 INFO L225 Difference]: With dead ends: 942 [2022-04-05 09:30:09,919 INFO L226 Difference]: Without dead ends: 924 [2022-04-05 09:30:09,920 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2022-04-05 09:30:09,920 INFO L913 BasicCegarLoop]: 673 mSDtfsCounter, 338 mSDsluCounter, 2155 mSDsCounter, 0 mSdLazyCounter, 5915 mSolverCounterSat, 139 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 340 SdHoareTripleChecker+Valid, 2828 SdHoareTripleChecker+Invalid, 6054 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 139 IncrementalHoareTripleChecker+Valid, 5915 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-04-05 09:30:09,920 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [340 Valid, 2828 Invalid, 6054 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [139 Valid, 5915 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-04-05 09:30:09,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 924 states. [2022-04-05 09:30:09,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 924 to 804. [2022-04-05 09:30:09,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 804 states, 630 states have (on average 1.3555555555555556) internal successors, (854), 643 states have internal predecessors, (854), 106 states have call successors, (106), 49 states have call predecessors, (106), 67 states have return successors, (135), 118 states have call predecessors, (135), 99 states have call successors, (135) [2022-04-05 09:30:09,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 804 states to 804 states and 1095 transitions. [2022-04-05 09:30:09,983 INFO L78 Accepts]: Start accepts. Automaton has 804 states and 1095 transitions. Word has length 56 [2022-04-05 09:30:09,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 09:30:09,984 INFO L478 AbstractCegarLoop]: Abstraction has 804 states and 1095 transitions. [2022-04-05 09:30:09,984 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 09:30:09,984 INFO L276 IsEmpty]: Start isEmpty. Operand 804 states and 1095 transitions. [2022-04-05 09:30:09,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-04-05 09:30:09,986 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 09:30:09,986 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 09:30:09,986 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-04-05 09:30:09,986 INFO L403 AbstractCegarLoop]: === Iteration 24 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 09:30:09,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 09:30:09,986 INFO L85 PathProgramCache]: Analyzing trace with hash -303401055, now seen corresponding path program 1 times [2022-04-05 09:30:09,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 09:30:09,986 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36538512] [2022-04-05 09:30:09,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 09:30:09,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 09:30:09,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:10,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 09:30:10,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:10,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 09:30:10,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:10,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-05 09:30:10,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:10,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-04-05 09:30:10,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:10,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-05 09:30:10,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:10,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-05 09:30:10,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:10,143 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 09:30:10,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 09:30:10,143 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [36538512] [2022-04-05 09:30:10,143 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [36538512] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 09:30:10,145 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 09:30:10,145 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-04-05 09:30:10,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27447328] [2022-04-05 09:30:10,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 09:30:10,146 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-04-05 09:30:10,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 09:30:10,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-04-05 09:30:10,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2022-04-05 09:30:10,147 INFO L87 Difference]: Start difference. First operand 804 states and 1095 transitions. Second operand has 15 states, 15 states have (on average 2.7333333333333334) internal successors, (41), 7 states have internal predecessors, (41), 2 states have call successors, (8), 7 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 1 states have call successors, (6) [2022-04-05 09:30:12,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 09:30:12,073 INFO L93 Difference]: Finished difference Result 937 states and 1319 transitions. [2022-04-05 09:30:12,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-04-05 09:30:12,073 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 09:30:12,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 09:30:12,076 INFO L225 Difference]: With dead ends: 937 [2022-04-05 09:30:12,076 INFO L226 Difference]: Without dead ends: 919 [2022-04-05 09:30:12,077 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2022-04-05 09:30:12,077 INFO L913 BasicCegarLoop]: 657 mSDtfsCounter, 350 mSDsluCounter, 2016 mSDsCounter, 0 mSdLazyCounter, 5447 mSolverCounterSat, 140 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 352 SdHoareTripleChecker+Valid, 2673 SdHoareTripleChecker+Invalid, 5587 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 140 IncrementalHoareTripleChecker+Valid, 5447 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-04-05 09:30:12,077 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [352 Valid, 2673 Invalid, 5587 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [140 Valid, 5447 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-04-05 09:30:12,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 919 states. [2022-04-05 09:30:12,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 919 to 799. [2022-04-05 09:30:12,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 799 states, 627 states have (on average 1.3556618819776713) internal successors, (850), 640 states have internal predecessors, (850), 105 states have call successors, (105), 49 states have call predecessors, (105), 66 states have return successors, (133), 116 states have call predecessors, (133), 98 states have call successors, (133) [2022-04-05 09:30:12,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 799 states to 799 states and 1088 transitions. [2022-04-05 09:30:12,144 INFO L78 Accepts]: Start accepts. Automaton has 799 states and 1088 transitions. Word has length 55 [2022-04-05 09:30:12,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 09:30:12,144 INFO L478 AbstractCegarLoop]: Abstraction has 799 states and 1088 transitions. [2022-04-05 09:30:12,145 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 09:30:12,145 INFO L276 IsEmpty]: Start isEmpty. Operand 799 states and 1088 transitions. [2022-04-05 09:30:12,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-04-05 09:30:12,146 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 09:30:12,146 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, 1] [2022-04-05 09:30:12,146 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-04-05 09:30:12,146 INFO L403 AbstractCegarLoop]: === Iteration 25 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 09:30:12,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 09:30:12,146 INFO L85 PathProgramCache]: Analyzing trace with hash 1335002991, now seen corresponding path program 1 times [2022-04-05 09:30:12,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 09:30:12,147 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010927919] [2022-04-05 09:30:12,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 09:30:12,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 09:30:12,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:12,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 09:30:12,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:12,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 09:30:12,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:12,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-05 09:30:12,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:12,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-05 09:30:12,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:12,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-04-05 09:30:12,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:12,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-04-05 09:30:12,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:12,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-05 09:30:12,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 09:30:12,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010927919] [2022-04-05 09:30:12,270 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1010927919] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 09:30:12,270 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 09:30:12,270 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-04-05 09:30:12,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682450872] [2022-04-05 09:30:12,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 09:30:12,270 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-04-05 09:30:12,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 09:30:12,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-04-05 09:30:12,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-04-05 09:30:12,271 INFO L87 Difference]: Start difference. First operand 799 states and 1088 transitions. Second operand has 10 states, 10 states have (on average 4.2) internal successors, (42), 4 states have internal predecessors, (42), 3 states have call successors, (8), 8 states have call predecessors, (8), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-04-05 09:30:14,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 09:30:14,090 INFO L93 Difference]: Finished difference Result 984 states and 1370 transitions. [2022-04-05 09:30:14,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-04-05 09:30:14,091 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 09:30:14,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 09:30:14,095 INFO L225 Difference]: With dead ends: 984 [2022-04-05 09:30:14,095 INFO L226 Difference]: Without dead ends: 941 [2022-04-05 09:30:14,095 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 09:30:14,095 INFO L913 BasicCegarLoop]: 678 mSDtfsCounter, 1160 mSDsluCounter, 665 mSDsCounter, 0 mSdLazyCounter, 2928 mSolverCounterSat, 242 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1170 SdHoareTripleChecker+Valid, 1343 SdHoareTripleChecker+Invalid, 3170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 242 IncrementalHoareTripleChecker+Valid, 2928 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-04-05 09:30:14,096 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1170 Valid, 1343 Invalid, 3170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [242 Valid, 2928 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-04-05 09:30:14,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 941 states. [2022-04-05 09:30:14,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 941 to 799. [2022-04-05 09:30:14,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 799 states, 627 states have (on average 1.354066985645933) internal successors, (849), 640 states have internal predecessors, (849), 105 states have call successors, (105), 49 states have call predecessors, (105), 66 states have return successors, (133), 116 states have call predecessors, (133), 98 states have call successors, (133) [2022-04-05 09:30:14,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 799 states to 799 states and 1087 transitions. [2022-04-05 09:30:14,151 INFO L78 Accepts]: Start accepts. Automaton has 799 states and 1087 transitions. Word has length 56 [2022-04-05 09:30:14,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 09:30:14,152 INFO L478 AbstractCegarLoop]: Abstraction has 799 states and 1087 transitions. [2022-04-05 09:30:14,152 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 09:30:14,152 INFO L276 IsEmpty]: Start isEmpty. Operand 799 states and 1087 transitions. [2022-04-05 09:30:14,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-04-05 09:30:14,153 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 09:30:14,153 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 09:30:14,153 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-04-05 09:30:14,153 INFO L403 AbstractCegarLoop]: === Iteration 26 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 09:30:14,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 09:30:14,154 INFO L85 PathProgramCache]: Analyzing trace with hash 1948386428, now seen corresponding path program 1 times [2022-04-05 09:30:14,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 09:30:14,154 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285591710] [2022-04-05 09:30:14,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 09:30:14,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 09:30:14,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:14,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 09:30:14,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:14,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 09:30:14,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:14,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-05 09:30:14,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:14,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-04-05 09:30:14,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:14,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-05 09:30:14,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:14,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-05 09:30:14,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:14,257 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 09:30:14,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 09:30:14,258 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285591710] [2022-04-05 09:30:14,258 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1285591710] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 09:30:14,258 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 09:30:14,258 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-04-05 09:30:14,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193168355] [2022-04-05 09:30:14,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 09:30:14,258 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-04-05 09:30:14,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 09:30:14,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-04-05 09:30:14,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-04-05 09:30:14,259 INFO L87 Difference]: Start difference. First operand 799 states and 1087 transitions. Second operand has 8 states, 8 states have (on average 5.375) internal successors, (43), 3 states have internal predecessors, (43), 3 states have call successors, (12), 8 states have call predecessors, (12), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2022-04-05 09:30:15,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 09:30:15,518 INFO L93 Difference]: Finished difference Result 1186 states and 1642 transitions. [2022-04-05 09:30:15,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-04-05 09:30:15,519 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 3 states have internal predecessors, (43), 3 states have call successors, (12), 8 states have call predecessors, (12), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) Word has length 61 [2022-04-05 09:30:15,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 09:30:15,528 INFO L225 Difference]: With dead ends: 1186 [2022-04-05 09:30:15,528 INFO L226 Difference]: Without dead ends: 1023 [2022-04-05 09:30:15,529 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 3 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2022-04-05 09:30:15,529 INFO L913 BasicCegarLoop]: 663 mSDtfsCounter, 677 mSDsluCounter, 578 mSDsCounter, 0 mSdLazyCounter, 1342 mSolverCounterSat, 228 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 699 SdHoareTripleChecker+Valid, 1241 SdHoareTripleChecker+Invalid, 1570 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 228 IncrementalHoareTripleChecker+Valid, 1342 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-04-05 09:30:15,530 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [699 Valid, 1241 Invalid, 1570 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [228 Valid, 1342 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-04-05 09:30:15,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1023 states. [2022-04-05 09:30:15,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1023 to 840. [2022-04-05 09:30:15,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 840 states, 660 states have (on average 1.3424242424242425) internal successors, (886), 672 states have internal predecessors, (886), 106 states have call successors, (106), 53 states have call predecessors, (106), 73 states have return successors, (135), 121 states have call predecessors, (135), 100 states have call successors, (135) [2022-04-05 09:30:15,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 840 states to 840 states and 1127 transitions. [2022-04-05 09:30:15,591 INFO L78 Accepts]: Start accepts. Automaton has 840 states and 1127 transitions. Word has length 61 [2022-04-05 09:30:15,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 09:30:15,592 INFO L478 AbstractCegarLoop]: Abstraction has 840 states and 1127 transitions. [2022-04-05 09:30:15,592 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 3 states have internal predecessors, (43), 3 states have call successors, (12), 8 states have call predecessors, (12), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2022-04-05 09:30:15,592 INFO L276 IsEmpty]: Start isEmpty. Operand 840 states and 1127 transitions. [2022-04-05 09:30:15,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-04-05 09:30:15,593 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 09:30:15,593 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 09:30:15,593 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-04-05 09:30:15,593 INFO L403 AbstractCegarLoop]: === Iteration 27 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 09:30:15,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 09:30:15,594 INFO L85 PathProgramCache]: Analyzing trace with hash -1337798748, now seen corresponding path program 1 times [2022-04-05 09:30:15,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 09:30:15,594 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923152933] [2022-04-05 09:30:15,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 09:30:15,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 09:30:15,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:15,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 09:30:15,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:15,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 09:30:15,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:15,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-05 09:30:15,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:15,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-05 09:30:15,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:15,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-05 09:30:15,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:15,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-04-05 09:30:15,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:15,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-05 09:30:15,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:15,861 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 09:30:15,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 09:30:15,861 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923152933] [2022-04-05 09:30:15,861 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [923152933] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 09:30:15,861 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 09:30:15,861 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-04-05 09:30:15,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273754709] [2022-04-05 09:30:15,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 09:30:15,862 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-04-05 09:30:15,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 09:30:15,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-04-05 09:30:15,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=327, Unknown=0, NotChecked=0, Total=380 [2022-04-05 09:30:15,863 INFO L87 Difference]: Start difference. First operand 840 states and 1127 transitions. Second operand has 20 states, 19 states have (on average 2.4210526315789473) internal successors, (46), 10 states have internal predecessors, (46), 4 states have call successors, (9), 9 states have call predecessors, (9), 4 states have return successors, (7), 5 states have call predecessors, (7), 3 states have call successors, (7) [2022-04-05 09:30:18,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 09:30:18,079 INFO L93 Difference]: Finished difference Result 1008 states and 1399 transitions. [2022-04-05 09:30:18,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-04-05 09:30:18,080 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 09:30:18,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 09:30:18,082 INFO L225 Difference]: With dead ends: 1008 [2022-04-05 09:30:18,082 INFO L226 Difference]: Without dead ends: 984 [2022-04-05 09:30:18,083 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 09:30:18,083 INFO L913 BasicCegarLoop]: 655 mSDtfsCounter, 1013 mSDsluCounter, 2762 mSDsCounter, 0 mSdLazyCounter, 5966 mSolverCounterSat, 426 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1019 SdHoareTripleChecker+Valid, 3417 SdHoareTripleChecker+Invalid, 6392 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 426 IncrementalHoareTripleChecker+Valid, 5966 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-04-05 09:30:18,083 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1019 Valid, 3417 Invalid, 6392 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [426 Valid, 5966 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-04-05 09:30:18,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 984 states. [2022-04-05 09:30:18,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 984 to 838. [2022-04-05 09:30:18,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 838 states, 659 states have (on average 1.3414264036418817) internal successors, (884), 671 states have internal predecessors, (884), 105 states have call successors, (105), 53 states have call predecessors, (105), 73 states have return successors, (134), 120 states have call predecessors, (134), 99 states have call successors, (134) [2022-04-05 09:30:18,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 838 states to 838 states and 1123 transitions. [2022-04-05 09:30:18,142 INFO L78 Accepts]: Start accepts. Automaton has 838 states and 1123 transitions. Word has length 62 [2022-04-05 09:30:18,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 09:30:18,142 INFO L478 AbstractCegarLoop]: Abstraction has 838 states and 1123 transitions. [2022-04-05 09:30:18,142 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 09:30:18,142 INFO L276 IsEmpty]: Start isEmpty. Operand 838 states and 1123 transitions. [2022-04-05 09:30:18,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-04-05 09:30:18,143 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 09:30:18,143 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 09:30:18,143 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-04-05 09:30:18,143 INFO L403 AbstractCegarLoop]: === Iteration 28 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 09:30:18,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 09:30:18,144 INFO L85 PathProgramCache]: Analyzing trace with hash 1214008405, now seen corresponding path program 1 times [2022-04-05 09:30:18,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 09:30:18,144 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797930290] [2022-04-05 09:30:18,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 09:30:18,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 09:30:18,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:18,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 09:30:18,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:18,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 09:30:18,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:18,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-05 09:30:18,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:18,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-05 09:30:18,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:18,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-05 09:30:18,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:18,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-05 09:30:18,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:18,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-05 09:30:18,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:18,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-05 09:30:18,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 09:30:18,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [797930290] [2022-04-05 09:30:18,363 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [797930290] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 09:30:18,363 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 09:30:18,363 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-04-05 09:30:18,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218209609] [2022-04-05 09:30:18,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 09:30:18,363 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-04-05 09:30:18,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 09:30:18,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-04-05 09:30:18,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=327, Unknown=0, NotChecked=0, Total=380 [2022-04-05 09:30:18,364 INFO L87 Difference]: Start difference. First operand 838 states and 1123 transitions. Second operand has 20 states, 19 states have (on average 2.263157894736842) internal successors, (43), 10 states have internal predecessors, (43), 4 states have call successors, (9), 9 states have call predecessors, (9), 4 states have return successors, (7), 5 states have call predecessors, (7), 3 states have call successors, (7) [2022-04-05 09:30:20,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 09:30:20,927 INFO L93 Difference]: Finished difference Result 1006 states and 1395 transitions. [2022-04-05 09:30:20,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-04-05 09:30:20,928 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 09:30:20,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 09:30:20,930 INFO L225 Difference]: With dead ends: 1006 [2022-04-05 09:30:20,930 INFO L226 Difference]: Without dead ends: 980 [2022-04-05 09:30:20,931 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 09:30:20,931 INFO L913 BasicCegarLoop]: 634 mSDtfsCounter, 1331 mSDsluCounter, 2559 mSDsCounter, 0 mSdLazyCounter, 6276 mSolverCounterSat, 550 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1335 SdHoareTripleChecker+Valid, 3193 SdHoareTripleChecker+Invalid, 6826 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 550 IncrementalHoareTripleChecker+Valid, 6276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-04-05 09:30:20,931 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1335 Valid, 3193 Invalid, 6826 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [550 Valid, 6276 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-04-05 09:30:20,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 980 states. [2022-04-05 09:30:20,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 980 to 837. [2022-04-05 09:30:20,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 837 states, 658 states have (on average 1.3267477203647415) internal successors, (873), 670 states have internal predecessors, (873), 105 states have call successors, (105), 53 states have call predecessors, (105), 73 states have return successors, (134), 120 states have call predecessors, (134), 99 states have call successors, (134) [2022-04-05 09:30:20,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 837 states to 837 states and 1112 transitions. [2022-04-05 09:30:20,990 INFO L78 Accepts]: Start accepts. Automaton has 837 states and 1112 transitions. Word has length 59 [2022-04-05 09:30:20,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 09:30:20,990 INFO L478 AbstractCegarLoop]: Abstraction has 837 states and 1112 transitions. [2022-04-05 09:30:20,990 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 09:30:20,990 INFO L276 IsEmpty]: Start isEmpty. Operand 837 states and 1112 transitions. [2022-04-05 09:30:20,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-04-05 09:30:20,991 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 09:30:20,992 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 09:30:20,992 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-04-05 09:30:20,992 INFO L403 AbstractCegarLoop]: === Iteration 29 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 09:30:20,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 09:30:20,992 INFO L85 PathProgramCache]: Analyzing trace with hash -55485367, now seen corresponding path program 1 times [2022-04-05 09:30:20,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 09:30:20,992 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21749749] [2022-04-05 09:30:20,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 09:30:20,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 09:30:21,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:21,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 09:30:21,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:21,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 09:30:21,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:21,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-05 09:30:21,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:21,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-05 09:30:21,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:21,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 09:30:21,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:21,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-05 09:30:21,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:21,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-05 09:30:21,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 09:30:21,233 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21749749] [2022-04-05 09:30:21,233 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [21749749] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 09:30:21,233 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 09:30:21,233 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-04-05 09:30:21,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536335973] [2022-04-05 09:30:21,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 09:30:21,233 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-04-05 09:30:21,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 09:30:21,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-04-05 09:30:21,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2022-04-05 09:30:21,234 INFO L87 Difference]: Start difference. First operand 837 states and 1112 transitions. Second operand has 16 states, 16 states have (on average 2.75) internal successors, (44), 8 states have internal predecessors, (44), 2 states have call successors, (8), 7 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 1 states have call successors, (6) [2022-04-05 09:30:23,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 09:30:23,620 INFO L93 Difference]: Finished difference Result 995 states and 1369 transitions. [2022-04-05 09:30:23,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-04-05 09:30:23,620 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 09:30:23,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 09:30:23,623 INFO L225 Difference]: With dead ends: 995 [2022-04-05 09:30:23,623 INFO L226 Difference]: Without dead ends: 975 [2022-04-05 09:30:23,624 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2022-04-05 09:30:23,628 INFO L913 BasicCegarLoop]: 649 mSDtfsCounter, 324 mSDsluCounter, 2275 mSDsCounter, 0 mSdLazyCounter, 5838 mSolverCounterSat, 135 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 326 SdHoareTripleChecker+Valid, 2924 SdHoareTripleChecker+Invalid, 5973 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 135 IncrementalHoareTripleChecker+Valid, 5838 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-04-05 09:30:23,628 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [326 Valid, 2924 Invalid, 5973 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [135 Valid, 5838 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-04-05 09:30:23,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 975 states. [2022-04-05 09:30:23,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 975 to 834. [2022-04-05 09:30:23,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 834 states, 656 states have (on average 1.326219512195122) internal successors, (870), 668 states have internal predecessors, (870), 104 states have call successors, (104), 53 states have call predecessors, (104), 73 states have return successors, (133), 119 states have call predecessors, (133), 98 states have call successors, (133) [2022-04-05 09:30:23,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 834 states to 834 states and 1107 transitions. [2022-04-05 09:30:23,722 INFO L78 Accepts]: Start accepts. Automaton has 834 states and 1107 transitions. Word has length 58 [2022-04-05 09:30:23,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 09:30:23,722 INFO L478 AbstractCegarLoop]: Abstraction has 834 states and 1107 transitions. [2022-04-05 09:30:23,722 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 09:30:23,723 INFO L276 IsEmpty]: Start isEmpty. Operand 834 states and 1107 transitions. [2022-04-05 09:30:23,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-04-05 09:30:23,724 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 09:30:23,724 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 09:30:23,724 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-04-05 09:30:23,724 INFO L403 AbstractCegarLoop]: === Iteration 30 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 09:30:23,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 09:30:23,724 INFO L85 PathProgramCache]: Analyzing trace with hash -57775299, now seen corresponding path program 1 times [2022-04-05 09:30:23,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 09:30:23,724 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705935641] [2022-04-05 09:30:23,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 09:30:23,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 09:30:23,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:23,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 09:30:23,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:23,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 09:30:23,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:23,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-05 09:30:23,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:23,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-05 09:30:23,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:23,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-05 09:30:23,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:23,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-05 09:30:23,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:23,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-05 09:30:23,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:23,860 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 09:30:23,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 09:30:23,860 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705935641] [2022-04-05 09:30:23,860 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [705935641] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 09:30:23,860 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 09:30:23,860 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-04-05 09:30:23,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249934483] [2022-04-05 09:30:23,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 09:30:23,860 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-04-05 09:30:23,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 09:30:23,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-04-05 09:30:23,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-04-05 09:30:23,861 INFO L87 Difference]: Start difference. First operand 834 states and 1107 transitions. Second operand has 11 states, 11 states have (on average 4.0) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-04-05 09:30:24,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 09:30:24,969 INFO L93 Difference]: Finished difference Result 1141 states and 1604 transitions. [2022-04-05 09:30:24,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-04-05 09:30:24,970 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 09:30:24,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 09:30:24,973 INFO L225 Difference]: With dead ends: 1141 [2022-04-05 09:30:24,973 INFO L226 Difference]: Without dead ends: 1036 [2022-04-05 09:30:24,973 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 09:30:24,974 INFO L913 BasicCegarLoop]: 628 mSDtfsCounter, 431 mSDsluCounter, 721 mSDsCounter, 0 mSdLazyCounter, 1619 mSolverCounterSat, 178 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 433 SdHoareTripleChecker+Valid, 1349 SdHoareTripleChecker+Invalid, 1797 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 178 IncrementalHoareTripleChecker+Valid, 1619 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-04-05 09:30:24,974 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [433 Valid, 1349 Invalid, 1797 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [178 Valid, 1619 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-04-05 09:30:24,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1036 states. [2022-04-05 09:30:25,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1036 to 841. [2022-04-05 09:30:25,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 841 states, 661 states have (on average 1.3267776096822996) internal successors, (877), 674 states have internal predecessors, (877), 105 states have call successors, (105), 53 states have call predecessors, (105), 74 states have return successors, (140), 120 states have call predecessors, (140), 99 states have call successors, (140) [2022-04-05 09:30:25,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 841 states to 841 states and 1122 transitions. [2022-04-05 09:30:25,075 INFO L78 Accepts]: Start accepts. Automaton has 841 states and 1122 transitions. Word has length 60 [2022-04-05 09:30:25,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 09:30:25,075 INFO L478 AbstractCegarLoop]: Abstraction has 841 states and 1122 transitions. [2022-04-05 09:30:25,075 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 09:30:25,075 INFO L276 IsEmpty]: Start isEmpty. Operand 841 states and 1122 transitions. [2022-04-05 09:30:25,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-04-05 09:30:25,077 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 09:30:25,077 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 09:30:25,077 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-04-05 09:30:25,077 INFO L403 AbstractCegarLoop]: === Iteration 31 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 09:30:25,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 09:30:25,077 INFO L85 PathProgramCache]: Analyzing trace with hash -2067879140, now seen corresponding path program 1 times [2022-04-05 09:30:25,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 09:30:25,077 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301564576] [2022-04-05 09:30:25,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 09:30:25,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 09:30:25,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:25,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 09:30:25,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:25,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 09:30:25,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:25,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-05 09:30:25,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:25,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-05 09:30:25,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:25,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-05 09:30:25,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:25,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-05 09:30:25,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:25,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-05 09:30:25,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:25,242 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 09:30:25,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 09:30:25,243 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301564576] [2022-04-05 09:30:25,243 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1301564576] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 09:30:25,243 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 09:30:25,243 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-04-05 09:30:25,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468509338] [2022-04-05 09:30:25,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 09:30:25,243 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-04-05 09:30:25,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 09:30:25,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-04-05 09:30:25,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2022-04-05 09:30:25,244 INFO L87 Difference]: Start difference. First operand 841 states and 1122 transitions. Second operand has 16 states, 16 states have (on average 2.75) internal successors, (44), 7 states have internal predecessors, (44), 3 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 4 states have call predecessors, (7), 2 states have call successors, (7) [2022-04-05 09:30:27,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 09:30:27,078 INFO L93 Difference]: Finished difference Result 1008 states and 1400 transitions. [2022-04-05 09:30:27,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-04-05 09:30:27,078 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 09:30:27,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 09:30:27,080 INFO L225 Difference]: With dead ends: 1008 [2022-04-05 09:30:27,080 INFO L226 Difference]: Without dead ends: 983 [2022-04-05 09:30:27,081 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 09:30:27,081 INFO L913 BasicCegarLoop]: 649 mSDtfsCounter, 981 mSDsluCounter, 1941 mSDsCounter, 0 mSdLazyCounter, 4406 mSolverCounterSat, 396 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 984 SdHoareTripleChecker+Valid, 2590 SdHoareTripleChecker+Invalid, 4802 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 396 IncrementalHoareTripleChecker+Valid, 4406 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-04-05 09:30:27,081 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [984 Valid, 2590 Invalid, 4802 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [396 Valid, 4406 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-04-05 09:30:27,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 983 states. [2022-04-05 09:30:27,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 983 to 839. [2022-04-05 09:30:27,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 839 states, 660 states have (on average 1.3257575757575757) internal successors, (875), 673 states have internal predecessors, (875), 104 states have call successors, (104), 53 states have call predecessors, (104), 74 states have return successors, (139), 119 states have call predecessors, (139), 98 states have call successors, (139) [2022-04-05 09:30:27,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 839 states to 839 states and 1118 transitions. [2022-04-05 09:30:27,140 INFO L78 Accepts]: Start accepts. Automaton has 839 states and 1118 transitions. Word has length 60 [2022-04-05 09:30:27,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 09:30:27,140 INFO L478 AbstractCegarLoop]: Abstraction has 839 states and 1118 transitions. [2022-04-05 09:30:27,141 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 09:30:27,141 INFO L276 IsEmpty]: Start isEmpty. Operand 839 states and 1118 transitions. [2022-04-05 09:30:27,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-04-05 09:30:27,142 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 09:30:27,142 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 09:30:27,142 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-04-05 09:30:27,142 INFO L403 AbstractCegarLoop]: === Iteration 32 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 09:30:27,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 09:30:27,142 INFO L85 PathProgramCache]: Analyzing trace with hash 1557615113, now seen corresponding path program 1 times [2022-04-05 09:30:27,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 09:30:27,142 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545127965] [2022-04-05 09:30:27,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 09:30:27,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 09:30:27,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:27,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 09:30:27,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:27,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 09:30:27,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:27,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-05 09:30:27,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:27,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-05 09:30:27,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:27,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-05 09:30:27,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:27,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-05 09:30:27,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:27,365 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 09:30:27,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 09:30:27,366 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545127965] [2022-04-05 09:30:27,366 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [545127965] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 09:30:27,366 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 09:30:27,366 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-04-05 09:30:27,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597327103] [2022-04-05 09:30:27,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 09:30:27,366 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-04-05 09:30:27,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 09:30:27,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-04-05 09:30:27,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2022-04-05 09:30:27,367 INFO L87 Difference]: Start difference. First operand 839 states and 1118 transitions. Second operand has 16 states, 16 states have (on average 2.8125) internal successors, (45), 8 states have internal predecessors, (45), 3 states have call successors, (8), 8 states have call predecessors, (8), 3 states have return successors, (6), 4 states have call predecessors, (6), 2 states have call successors, (6) [2022-04-05 09:30:29,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 09:30:29,350 INFO L93 Difference]: Finished difference Result 1036 states and 1425 transitions. [2022-04-05 09:30:29,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-04-05 09:30:29,350 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 09:30:29,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 09:30:29,352 INFO L225 Difference]: With dead ends: 1036 [2022-04-05 09:30:29,352 INFO L226 Difference]: Without dead ends: 968 [2022-04-05 09:30:29,353 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 09:30:29,354 INFO L913 BasicCegarLoop]: 620 mSDtfsCounter, 963 mSDsluCounter, 1968 mSDsCounter, 0 mSdLazyCounter, 4805 mSolverCounterSat, 406 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 967 SdHoareTripleChecker+Valid, 2588 SdHoareTripleChecker+Invalid, 5211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 406 IncrementalHoareTripleChecker+Valid, 4805 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-04-05 09:30:29,354 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [967 Valid, 2588 Invalid, 5211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [406 Valid, 4805 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-04-05 09:30:29,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 968 states. [2022-04-05 09:30:29,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 968 to 827. [2022-04-05 09:30:29,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 827 states, 651 states have (on average 1.3210445468509984) internal successors, (860), 664 states have internal predecessors, (860), 101 states have call successors, (101), 53 states have call predecessors, (101), 74 states have return successors, (136), 116 states have call predecessors, (136), 95 states have call successors, (136) [2022-04-05 09:30:29,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 827 states to 827 states and 1097 transitions. [2022-04-05 09:30:29,415 INFO L78 Accepts]: Start accepts. Automaton has 827 states and 1097 transitions. Word has length 59 [2022-04-05 09:30:29,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 09:30:29,415 INFO L478 AbstractCegarLoop]: Abstraction has 827 states and 1097 transitions. [2022-04-05 09:30:29,415 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 09:30:29,415 INFO L276 IsEmpty]: Start isEmpty. Operand 827 states and 1097 transitions. [2022-04-05 09:30:29,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-04-05 09:30:29,417 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 09:30:29,417 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 09:30:29,417 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-04-05 09:30:29,417 INFO L403 AbstractCegarLoop]: === Iteration 33 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 09:30:29,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 09:30:29,417 INFO L85 PathProgramCache]: Analyzing trace with hash -1192878684, now seen corresponding path program 1 times [2022-04-05 09:30:29,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 09:30:29,417 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645074232] [2022-04-05 09:30:29,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 09:30:29,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 09:30:29,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:29,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 09:30:29,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:29,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 09:30:29,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:29,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-05 09:30:29,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:29,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-05 09:30:29,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:29,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-05 09:30:29,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:29,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-05 09:30:29,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:29,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-04-05 09:30:29,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:29,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-05 09:30:29,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 09:30:29,542 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645074232] [2022-04-05 09:30:29,542 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1645074232] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 09:30:29,542 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 09:30:29,542 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-04-05 09:30:29,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286345697] [2022-04-05 09:30:29,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 09:30:29,543 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-04-05 09:30:29,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 09:30:29,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-04-05 09:30:29,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2022-04-05 09:30:29,543 INFO L87 Difference]: Start difference. First operand 827 states and 1097 transitions. Second operand has 12 states, 12 states have (on average 3.75) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-04-05 09:30:30,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 09:30:30,908 INFO L93 Difference]: Finished difference Result 1016 states and 1419 transitions. [2022-04-05 09:30:30,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-04-05 09:30:30,908 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 09:30:30,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 09:30:30,910 INFO L225 Difference]: With dead ends: 1016 [2022-04-05 09:30:30,910 INFO L226 Difference]: Without dead ends: 982 [2022-04-05 09:30:30,911 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 09:30:30,911 INFO L913 BasicCegarLoop]: 609 mSDtfsCounter, 938 mSDsluCounter, 1162 mSDsCounter, 0 mSdLazyCounter, 1732 mSolverCounterSat, 427 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 940 SdHoareTripleChecker+Valid, 1771 SdHoareTripleChecker+Invalid, 2159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 427 IncrementalHoareTripleChecker+Valid, 1732 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-04-05 09:30:30,911 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [940 Valid, 1771 Invalid, 2159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [427 Valid, 1732 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-04-05 09:30:30,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 982 states. [2022-04-05 09:30:30,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 982 to 831. [2022-04-05 09:30:30,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 831 states, 653 states have (on average 1.3200612557427258) internal successors, (862), 668 states have internal predecessors, (862), 101 states have call successors, (101), 53 states have call predecessors, (101), 76 states have return successors, (152), 116 states have call predecessors, (152), 95 states have call successors, (152) [2022-04-05 09:30:30,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 831 states to 831 states and 1115 transitions. [2022-04-05 09:30:30,972 INFO L78 Accepts]: Start accepts. Automaton has 831 states and 1115 transitions. Word has length 61 [2022-04-05 09:30:30,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 09:30:30,972 INFO L478 AbstractCegarLoop]: Abstraction has 831 states and 1115 transitions. [2022-04-05 09:30:30,972 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 09:30:30,972 INFO L276 IsEmpty]: Start isEmpty. Operand 831 states and 1115 transitions. [2022-04-05 09:30:30,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-04-05 09:30:30,973 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 09:30:30,973 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] [2022-04-05 09:30:30,973 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-04-05 09:30:30,974 INFO L403 AbstractCegarLoop]: === Iteration 34 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 09:30:30,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 09:30:30,974 INFO L85 PathProgramCache]: Analyzing trace with hash 440130742, now seen corresponding path program 1 times [2022-04-05 09:30:30,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 09:30:30,974 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558836564] [2022-04-05 09:30:30,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 09:30:30,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 09:30:30,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:31,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 09:30:31,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:31,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 09:30:31,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:31,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-05 09:30:31,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:31,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-05 09:30:31,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:31,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-05 09:30:31,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:31,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-04-05 09:30:31,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:31,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-05 09:30:31,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 09:30:31,136 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558836564] [2022-04-05 09:30:31,136 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [558836564] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 09:30:31,136 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 09:30:31,136 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-04-05 09:30:31,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866601999] [2022-04-05 09:30:31,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 09:30:31,136 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-04-05 09:30:31,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 09:30:31,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-04-05 09:30:31,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2022-04-05 09:30:31,137 INFO L87 Difference]: Start difference. First operand 831 states and 1115 transitions. Second operand has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (8), 8 states have call predecessors, (8), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2022-04-05 09:30:32,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 09:30:32,376 INFO L93 Difference]: Finished difference Result 1006 states and 1400 transitions. [2022-04-05 09:30:32,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-04-05 09:30:32,376 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 09:30:32,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 09:30:32,378 INFO L225 Difference]: With dead ends: 1006 [2022-04-05 09:30:32,378 INFO L226 Difference]: Without dead ends: 974 [2022-04-05 09:30:32,378 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 09:30:32,379 INFO L913 BasicCegarLoop]: 607 mSDtfsCounter, 1205 mSDsluCounter, 1131 mSDsCounter, 0 mSdLazyCounter, 2450 mSolverCounterSat, 491 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1207 SdHoareTripleChecker+Valid, 1738 SdHoareTripleChecker+Invalid, 2941 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 491 IncrementalHoareTripleChecker+Valid, 2450 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-04-05 09:30:32,379 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1207 Valid, 1738 Invalid, 2941 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [491 Valid, 2450 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-04-05 09:30:32,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 974 states. [2022-04-05 09:30:32,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 974 to 831. [2022-04-05 09:30:32,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 831 states, 653 states have (on average 1.318529862174579) internal successors, (861), 668 states have internal predecessors, (861), 101 states have call successors, (101), 53 states have call predecessors, (101), 76 states have return successors, (152), 116 states have call predecessors, (152), 95 states have call successors, (152) [2022-04-05 09:30:32,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 831 states to 831 states and 1114 transitions. [2022-04-05 09:30:32,442 INFO L78 Accepts]: Start accepts. Automaton has 831 states and 1114 transitions. Word has length 60 [2022-04-05 09:30:32,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 09:30:32,443 INFO L478 AbstractCegarLoop]: Abstraction has 831 states and 1114 transitions. [2022-04-05 09:30:32,443 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 09:30:32,443 INFO L276 IsEmpty]: Start isEmpty. Operand 831 states and 1114 transitions. [2022-04-05 09:30:32,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-04-05 09:30:32,444 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 09:30:32,444 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 09:30:32,444 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-04-05 09:30:32,444 INFO L403 AbstractCegarLoop]: === Iteration 35 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 09:30:32,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 09:30:32,444 INFO L85 PathProgramCache]: Analyzing trace with hash 185394197, now seen corresponding path program 1 times [2022-04-05 09:30:32,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 09:30:32,445 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981419385] [2022-04-05 09:30:32,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 09:30:32,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 09:30:32,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:32,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 09:30:32,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:32,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 09:30:32,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:32,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-05 09:30:32,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:32,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-05 09:30:32,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:32,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-05 09:30:32,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:32,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-04-05 09:30:32,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:32,636 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 09:30:32,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 09:30:32,637 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981419385] [2022-04-05 09:30:32,637 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [981419385] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 09:30:32,637 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 09:30:32,637 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-04-05 09:30:32,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173879967] [2022-04-05 09:30:32,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 09:30:32,637 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-04-05 09:30:32,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 09:30:32,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-04-05 09:30:32,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2022-04-05 09:30:32,638 INFO L87 Difference]: Start difference. First operand 831 states and 1114 transitions. Second operand has 16 states, 16 states have (on average 2.875) internal successors, (46), 8 states have internal predecessors, (46), 3 states have call successors, (8), 8 states have call predecessors, (8), 3 states have return successors, (6), 4 states have call predecessors, (6), 2 states have call successors, (6) [2022-04-05 09:30:34,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 09:30:34,342 INFO L93 Difference]: Finished difference Result 1013 states and 1417 transitions. [2022-04-05 09:30:34,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-04-05 09:30:34,342 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 09:30:34,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 09:30:34,344 INFO L225 Difference]: With dead ends: 1013 [2022-04-05 09:30:34,349 INFO L226 Difference]: Without dead ends: 961 [2022-04-05 09:30:34,360 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 09:30:34,360 INFO L913 BasicCegarLoop]: 608 mSDtfsCounter, 364 mSDsluCounter, 1913 mSDsCounter, 0 mSdLazyCounter, 4476 mSolverCounterSat, 148 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 369 SdHoareTripleChecker+Valid, 2521 SdHoareTripleChecker+Invalid, 4624 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 148 IncrementalHoareTripleChecker+Valid, 4476 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-04-05 09:30:34,360 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [369 Valid, 2521 Invalid, 4624 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [148 Valid, 4476 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-04-05 09:30:34,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 961 states. [2022-04-05 09:30:34,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 961 to 823. [2022-04-05 09:30:34,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 823 states, 647 states have (on average 1.3137557959814528) internal successors, (850), 662 states have internal predecessors, (850), 99 states have call successors, (99), 53 states have call predecessors, (99), 76 states have return successors, (150), 114 states have call predecessors, (150), 93 states have call successors, (150) [2022-04-05 09:30:34,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 823 states to 823 states and 1099 transitions. [2022-04-05 09:30:34,423 INFO L78 Accepts]: Start accepts. Automaton has 823 states and 1099 transitions. Word has length 60 [2022-04-05 09:30:34,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 09:30:34,424 INFO L478 AbstractCegarLoop]: Abstraction has 823 states and 1099 transitions. [2022-04-05 09:30:34,424 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 09:30:34,424 INFO L276 IsEmpty]: Start isEmpty. Operand 823 states and 1099 transitions. [2022-04-05 09:30:34,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-04-05 09:30:34,425 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 09:30:34,425 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 09:30:34,425 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-04-05 09:30:34,425 INFO L403 AbstractCegarLoop]: === Iteration 36 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 09:30:34,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 09:30:34,426 INFO L85 PathProgramCache]: Analyzing trace with hash 1536662915, now seen corresponding path program 1 times [2022-04-05 09:30:34,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 09:30:34,426 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115094903] [2022-04-05 09:30:34,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 09:30:34,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 09:30:34,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:34,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 09:30:34,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:34,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 09:30:34,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:34,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-05 09:30:34,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:34,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-05 09:30:34,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:34,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-05 09:30:34,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:34,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-04-05 09:30:34,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:34,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-05 09:30:34,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:34,678 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 09:30:34,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 09:30:34,679 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115094903] [2022-04-05 09:30:34,679 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1115094903] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 09:30:34,679 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 09:30:34,679 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-04-05 09:30:34,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98235371] [2022-04-05 09:30:34,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 09:30:34,680 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-04-05 09:30:34,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 09:30:34,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-04-05 09:30:34,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=296, Unknown=0, NotChecked=0, Total=342 [2022-04-05 09:30:34,681 INFO L87 Difference]: Start difference. First operand 823 states and 1099 transitions. Second operand has 19 states, 19 states have (on average 2.789473684210526) internal successors, (53), 9 states have internal predecessors, (53), 2 states have call successors, (9), 8 states have call predecessors, (9), 5 states have return successors, (7), 5 states have call predecessors, (7), 1 states have call successors, (7) [2022-04-05 09:30:36,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 09:30:36,403 INFO L93 Difference]: Finished difference Result 978 states and 1360 transitions. [2022-04-05 09:30:36,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-04-05 09:30:36,404 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 09:30:36,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 09:30:36,406 INFO L225 Difference]: With dead ends: 978 [2022-04-05 09:30:36,406 INFO L226 Difference]: Without dead ends: 948 [2022-04-05 09:30:36,406 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 09:30:36,407 INFO L913 BasicCegarLoop]: 603 mSDtfsCounter, 1448 mSDsluCounter, 2529 mSDsCounter, 0 mSdLazyCounter, 5235 mSolverCounterSat, 596 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1450 SdHoareTripleChecker+Valid, 3132 SdHoareTripleChecker+Invalid, 5831 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 596 IncrementalHoareTripleChecker+Valid, 5235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-04-05 09:30:36,407 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1450 Valid, 3132 Invalid, 5831 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [596 Valid, 5235 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-04-05 09:30:36,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 948 states. [2022-04-05 09:30:36,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 948 to 812. [2022-04-05 09:30:36,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 812 states, 639 states have (on average 1.3145539906103287) internal successors, (840), 654 states have internal predecessors, (840), 97 states have call successors, (97), 53 states have call predecessors, (97), 75 states have return successors, (147), 111 states have call predecessors, (147), 91 states have call successors, (147) [2022-04-05 09:30:36,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 812 states to 812 states and 1084 transitions. [2022-04-05 09:30:36,470 INFO L78 Accepts]: Start accepts. Automaton has 812 states and 1084 transitions. Word has length 69 [2022-04-05 09:30:36,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 09:30:36,470 INFO L478 AbstractCegarLoop]: Abstraction has 812 states and 1084 transitions. [2022-04-05 09:30:36,470 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 09:30:36,470 INFO L276 IsEmpty]: Start isEmpty. Operand 812 states and 1084 transitions. [2022-04-05 09:30:36,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-04-05 09:30:36,471 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 09:30:36,471 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 09:30:36,471 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-04-05 09:30:36,471 INFO L403 AbstractCegarLoop]: === Iteration 37 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 09:30:36,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 09:30:36,472 INFO L85 PathProgramCache]: Analyzing trace with hash -1158774888, now seen corresponding path program 1 times [2022-04-05 09:30:36,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 09:30:36,472 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896343816] [2022-04-05 09:30:36,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 09:30:36,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 09:30:36,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:36,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 09:30:36,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:36,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 09:30:36,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:36,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-05 09:30:36,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:36,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-05 09:30:36,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:36,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-04-05 09:30:36,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:36,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-05 09:30:36,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:36,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-05 09:30:36,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:36,663 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 09:30:36,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 09:30:36,663 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896343816] [2022-04-05 09:30:36,663 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [896343816] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 09:30:36,663 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 09:30:36,663 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-04-05 09:30:36,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442471867] [2022-04-05 09:30:36,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 09:30:36,664 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-04-05 09:30:36,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 09:30:36,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-04-05 09:30:36,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=296, Unknown=0, NotChecked=0, Total=342 [2022-04-05 09:30:36,664 INFO L87 Difference]: Start difference. First operand 812 states and 1084 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 9 states have internal predecessors, (47), 2 states have call successors, (9), 8 states have call predecessors, (9), 5 states have return successors, (7), 5 states have call predecessors, (7), 1 states have call successors, (7) [2022-04-05 09:30:38,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 09:30:38,573 INFO L93 Difference]: Finished difference Result 965 states and 1341 transitions. [2022-04-05 09:30:38,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-04-05 09:30:38,573 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 09:30:38,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 09:30:38,575 INFO L225 Difference]: With dead ends: 965 [2022-04-05 09:30:38,575 INFO L226 Difference]: Without dead ends: 943 [2022-04-05 09:30:38,576 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 09:30:38,576 INFO L913 BasicCegarLoop]: 588 mSDtfsCounter, 577 mSDsluCounter, 2653 mSDsCounter, 0 mSdLazyCounter, 6080 mSolverCounterSat, 235 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 579 SdHoareTripleChecker+Valid, 3241 SdHoareTripleChecker+Invalid, 6315 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 235 IncrementalHoareTripleChecker+Valid, 6080 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-04-05 09:30:38,576 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [579 Valid, 3241 Invalid, 6315 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [235 Valid, 6080 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-04-05 09:30:38,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 943 states. [2022-04-05 09:30:38,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 943 to 807. [2022-04-05 09:30:38,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 807 states, 636 states have (on average 1.3144654088050314) internal successors, (836), 651 states have internal predecessors, (836), 96 states have call successors, (96), 53 states have call predecessors, (96), 74 states have return successors, (145), 109 states have call predecessors, (145), 90 states have call successors, (145) [2022-04-05 09:30:38,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 807 states to 807 states and 1077 transitions. [2022-04-05 09:30:38,640 INFO L78 Accepts]: Start accepts. Automaton has 807 states and 1077 transitions. Word has length 63 [2022-04-05 09:30:38,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 09:30:38,640 INFO L478 AbstractCegarLoop]: Abstraction has 807 states and 1077 transitions. [2022-04-05 09:30:38,640 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 09:30:38,640 INFO L276 IsEmpty]: Start isEmpty. Operand 807 states and 1077 transitions. [2022-04-05 09:30:38,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-04-05 09:30:38,641 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 09:30:38,641 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 09:30:38,641 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-04-05 09:30:38,641 INFO L403 AbstractCegarLoop]: === Iteration 38 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 09:30:38,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 09:30:38,642 INFO L85 PathProgramCache]: Analyzing trace with hash 1342281155, now seen corresponding path program 1 times [2022-04-05 09:30:38,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 09:30:38,642 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780459703] [2022-04-05 09:30:38,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 09:30:38,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 09:30:38,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:38,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 09:30:38,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:38,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 09:30:38,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:38,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-05 09:30:38,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:38,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-05 09:30:38,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:38,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-05 09:30:38,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:38,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-05 09:30:38,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:38,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-05 09:30:38,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:38,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-05 09:30:38,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 09:30:38,834 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780459703] [2022-04-05 09:30:38,834 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [780459703] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 09:30:38,834 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 09:30:38,834 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-04-05 09:30:38,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075415317] [2022-04-05 09:30:38,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 09:30:38,835 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-04-05 09:30:38,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 09:30:38,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-04-05 09:30:38,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=296, Unknown=0, NotChecked=0, Total=342 [2022-04-05 09:30:38,836 INFO L87 Difference]: Start difference. First operand 807 states and 1077 transitions. Second operand has 19 states, 19 states have (on average 2.4210526315789473) internal successors, (46), 9 states have internal predecessors, (46), 2 states have call successors, (9), 8 states have call predecessors, (9), 5 states have return successors, (7), 5 states have call predecessors, (7), 1 states have call successors, (7) [2022-04-05 09:30:40,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 09:30:40,259 INFO L93 Difference]: Finished difference Result 960 states and 1334 transitions. [2022-04-05 09:30:40,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-04-05 09:30:40,260 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 09:30:40,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 09:30:40,263 INFO L225 Difference]: With dead ends: 960 [2022-04-05 09:30:40,263 INFO L226 Difference]: Without dead ends: 938 [2022-04-05 09:30:40,263 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=366, Unknown=0, NotChecked=0, Total=420 [2022-04-05 09:30:40,263 INFO L913 BasicCegarLoop]: 581 mSDtfsCounter, 854 mSDsluCounter, 2458 mSDsCounter, 0 mSdLazyCounter, 5060 mSolverCounterSat, 347 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 856 SdHoareTripleChecker+Valid, 3039 SdHoareTripleChecker+Invalid, 5407 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 347 IncrementalHoareTripleChecker+Valid, 5060 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-04-05 09:30:40,263 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [856 Valid, 3039 Invalid, 5407 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [347 Valid, 5060 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-04-05 09:30:40,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 938 states. [2022-04-05 09:30:40,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 938 to 802. [2022-04-05 09:30:40,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 802 states, 633 states have (on average 1.3143759873617693) internal successors, (832), 648 states have internal predecessors, (832), 95 states have call successors, (95), 53 states have call predecessors, (95), 73 states have return successors, (143), 107 states have call predecessors, (143), 89 states have call successors, (143) [2022-04-05 09:30:40,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 802 states to 802 states and 1070 transitions. [2022-04-05 09:30:40,339 INFO L78 Accepts]: Start accepts. Automaton has 802 states and 1070 transitions. Word has length 62 [2022-04-05 09:30:40,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 09:30:40,339 INFO L478 AbstractCegarLoop]: Abstraction has 802 states and 1070 transitions. [2022-04-05 09:30:40,339 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 09:30:40,339 INFO L276 IsEmpty]: Start isEmpty. Operand 802 states and 1070 transitions. [2022-04-05 09:30:40,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-04-05 09:30:40,340 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 09:30:40,341 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 09:30:40,341 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-04-05 09:30:40,341 INFO L403 AbstractCegarLoop]: === Iteration 39 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 09:30:40,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 09:30:40,341 INFO L85 PathProgramCache]: Analyzing trace with hash 739520085, now seen corresponding path program 1 times [2022-04-05 09:30:40,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 09:30:40,341 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112632500] [2022-04-05 09:30:40,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 09:30:40,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 09:30:40,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:40,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 09:30:40,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:40,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 09:30:40,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:40,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-05 09:30:40,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:40,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-05 09:30:40,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:40,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-05 09:30:40,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:40,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-04-05 09:30:40,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:40,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-05 09:30:40,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:40,549 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 09:30:40,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 09:30:40,549 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112632500] [2022-04-05 09:30:40,550 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1112632500] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 09:30:40,550 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 09:30:40,550 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-04-05 09:30:40,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505213530] [2022-04-05 09:30:40,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 09:30:40,550 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-04-05 09:30:40,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 09:30:40,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-04-05 09:30:40,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=327, Unknown=0, NotChecked=0, Total=380 [2022-04-05 09:30:40,551 INFO L87 Difference]: Start difference. First operand 802 states and 1070 transitions. Second operand has 20 states, 19 states have (on average 2.473684210526316) internal successors, (47), 10 states have internal predecessors, (47), 4 states have call successors, (9), 9 states have call predecessors, (9), 4 states have return successors, (7), 5 states have call predecessors, (7), 3 states have call successors, (7) [2022-04-05 09:30:42,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 09:30:42,468 INFO L93 Difference]: Finished difference Result 960 states and 1332 transitions. [2022-04-05 09:30:42,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-04-05 09:30:42,468 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 09:30:42,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 09:30:42,471 INFO L225 Difference]: With dead ends: 960 [2022-04-05 09:30:42,471 INFO L226 Difference]: Without dead ends: 936 [2022-04-05 09:30:42,471 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 09:30:42,472 INFO L913 BasicCegarLoop]: 551 mSDtfsCounter, 592 mSDsluCounter, 2533 mSDsCounter, 0 mSdLazyCounter, 5924 mSolverCounterSat, 243 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 595 SdHoareTripleChecker+Valid, 3084 SdHoareTripleChecker+Invalid, 6167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 243 IncrementalHoareTripleChecker+Valid, 5924 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-04-05 09:30:42,472 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [595 Valid, 3084 Invalid, 6167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [243 Valid, 5924 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-04-05 09:30:42,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 936 states. [2022-04-05 09:30:42,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 936 to 800. [2022-04-05 09:30:42,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 800 states, 632 states have (on average 1.3132911392405062) internal successors, (830), 647 states have internal predecessors, (830), 94 states have call successors, (94), 53 states have call predecessors, (94), 73 states have return successors, (142), 106 states have call predecessors, (142), 88 states have call successors, (142) [2022-04-05 09:30:42,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 800 states to 800 states and 1066 transitions. [2022-04-05 09:30:42,537 INFO L78 Accepts]: Start accepts. Automaton has 800 states and 1066 transitions. Word has length 63 [2022-04-05 09:30:42,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 09:30:42,537 INFO L478 AbstractCegarLoop]: Abstraction has 800 states and 1066 transitions. [2022-04-05 09:30:42,537 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 09:30:42,537 INFO L276 IsEmpty]: Start isEmpty. Operand 800 states and 1066 transitions. [2022-04-05 09:30:42,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-04-05 09:30:42,538 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 09:30:42,538 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 09:30:42,539 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-04-05 09:30:42,539 INFO L403 AbstractCegarLoop]: === Iteration 40 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 09:30:42,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 09:30:42,539 INFO L85 PathProgramCache]: Analyzing trace with hash -620638821, now seen corresponding path program 1 times [2022-04-05 09:30:42,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 09:30:42,539 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723019363] [2022-04-05 09:30:42,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 09:30:42,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 09:30:42,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:42,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 09:30:42,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:42,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 09:30:42,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:42,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-05 09:30:42,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:42,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-05 09:30:42,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:42,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-05 09:30:42,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:42,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-05 09:30:42,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:42,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-04-05 09:30:42,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:42,691 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 09:30:42,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 09:30:42,691 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723019363] [2022-04-05 09:30:42,691 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1723019363] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 09:30:42,691 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 09:30:42,691 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-04-05 09:30:42,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447265271] [2022-04-05 09:30:42,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 09:30:42,691 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-04-05 09:30:42,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 09:30:42,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-04-05 09:30:42,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-04-05 09:30:42,692 INFO L87 Difference]: Start difference. First operand 800 states and 1066 transitions. Second operand has 10 states, 10 states have (on average 4.7) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (9), 9 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-04-05 09:30:43,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 09:30:43,687 INFO L93 Difference]: Finished difference Result 1150 states and 1562 transitions. [2022-04-05 09:30:43,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-04-05 09:30:43,687 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 09:30:43,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 09:30:43,689 INFO L225 Difference]: With dead ends: 1150 [2022-04-05 09:30:43,689 INFO L226 Difference]: Without dead ends: 797 [2022-04-05 09:30:43,690 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 09:30:43,691 INFO L913 BasicCegarLoop]: 511 mSDtfsCounter, 1131 mSDsluCounter, 579 mSDsCounter, 0 mSdLazyCounter, 902 mSolverCounterSat, 425 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1133 SdHoareTripleChecker+Valid, 1090 SdHoareTripleChecker+Invalid, 1327 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 425 IncrementalHoareTripleChecker+Valid, 902 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-04-05 09:30:43,691 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1133 Valid, 1090 Invalid, 1327 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [425 Valid, 902 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-04-05 09:30:43,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 797 states. [2022-04-05 09:30:43,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 797 to 692. [2022-04-05 09:30:43,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 692 states, 547 states have (on average 1.3053016453382085) internal successors, (714), 561 states have internal predecessors, (714), 82 states have call successors, (82), 47 states have call predecessors, (82), 62 states have return successors, (101), 90 states have call predecessors, (101), 76 states have call successors, (101) [2022-04-05 09:30:43,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 692 states to 692 states and 897 transitions. [2022-04-05 09:30:43,749 INFO L78 Accepts]: Start accepts. Automaton has 692 states and 897 transitions. Word has length 63 [2022-04-05 09:30:43,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 09:30:43,750 INFO L478 AbstractCegarLoop]: Abstraction has 692 states and 897 transitions. [2022-04-05 09:30:43,750 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 09:30:43,750 INFO L276 IsEmpty]: Start isEmpty. Operand 692 states and 897 transitions. [2022-04-05 09:30:43,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-04-05 09:30:43,751 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 09:30:43,751 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] [2022-04-05 09:30:43,751 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-04-05 09:30:43,751 INFO L403 AbstractCegarLoop]: === Iteration 41 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 09:30:43,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 09:30:43,752 INFO L85 PathProgramCache]: Analyzing trace with hash -306718972, now seen corresponding path program 1 times [2022-04-05 09:30:43,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 09:30:43,752 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234820388] [2022-04-05 09:30:43,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 09:30:43,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 09:30:43,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:43,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 09:30:43,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:43,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 09:30:43,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:43,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-05 09:30:43,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:43,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-04-05 09:30:43,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:43,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-05 09:30:43,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:43,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-05 09:30:43,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:43,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-05 09:30:43,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:43,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-05 09:30:43,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:43,875 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 09:30:43,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 09:30:43,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234820388] [2022-04-05 09:30:43,875 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1234820388] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 09:30:43,875 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 09:30:43,875 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-04-05 09:30:43,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844924253] [2022-04-05 09:30:43,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 09:30:43,876 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-04-05 09:30:43,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 09:30:43,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-04-05 09:30:43,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-04-05 09:30:43,876 INFO L87 Difference]: Start difference. First operand 692 states and 897 transitions. Second operand has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (12), 8 states have call predecessors, (12), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2022-04-05 09:30:44,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 09:30:44,588 INFO L93 Difference]: Finished difference Result 882 states and 1167 transitions. [2022-04-05 09:30:44,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-04-05 09:30:44,588 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 09:30:44,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 09:30:44,590 INFO L225 Difference]: With dead ends: 882 [2022-04-05 09:30:44,590 INFO L226 Difference]: Without dead ends: 762 [2022-04-05 09:30:44,590 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 09:30:44,591 INFO L913 BasicCegarLoop]: 475 mSDtfsCounter, 667 mSDsluCounter, 444 mSDsCounter, 0 mSdLazyCounter, 907 mSolverCounterSat, 243 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 678 SdHoareTripleChecker+Valid, 919 SdHoareTripleChecker+Invalid, 1150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 243 IncrementalHoareTripleChecker+Valid, 907 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-04-05 09:30:44,591 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [678 Valid, 919 Invalid, 1150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [243 Valid, 907 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-04-05 09:30:44,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 762 states. [2022-04-05 09:30:44,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 762 to 692. [2022-04-05 09:30:44,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 692 states, 547 states have (on average 1.3016453382084094) internal successors, (712), 561 states have internal predecessors, (712), 82 states have call successors, (82), 47 states have call predecessors, (82), 62 states have return successors, (101), 90 states have call predecessors, (101), 76 states have call successors, (101) [2022-04-05 09:30:44,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 692 states to 692 states and 895 transitions. [2022-04-05 09:30:44,648 INFO L78 Accepts]: Start accepts. Automaton has 692 states and 895 transitions. Word has length 66 [2022-04-05 09:30:44,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 09:30:44,649 INFO L478 AbstractCegarLoop]: Abstraction has 692 states and 895 transitions. [2022-04-05 09:30:44,649 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 09:30:44,649 INFO L276 IsEmpty]: Start isEmpty. Operand 692 states and 895 transitions. [2022-04-05 09:30:44,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-04-05 09:30:44,650 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 09:30:44,650 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 09:30:44,650 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2022-04-05 09:30:44,650 INFO L403 AbstractCegarLoop]: === Iteration 42 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 09:30:44,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 09:30:44,650 INFO L85 PathProgramCache]: Analyzing trace with hash 526937182, now seen corresponding path program 1 times [2022-04-05 09:30:44,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 09:30:44,650 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589661898] [2022-04-05 09:30:44,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 09:30:44,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 09:30:44,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:44,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 09:30:44,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:44,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 09:30:44,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:44,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-05 09:30:44,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:44,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-05 09:30:44,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:44,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-05 09:30:44,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:44,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-05 09:30:44,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:44,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-05 09:30:44,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:44,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-05 09:30:44,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:44,913 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 09:30:44,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 09:30:44,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589661898] [2022-04-05 09:30:44,914 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [589661898] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 09:30:44,914 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 09:30:44,914 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-04-05 09:30:44,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193123229] [2022-04-05 09:30:44,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 09:30:44,914 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-04-05 09:30:44,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 09:30:44,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-04-05 09:30:44,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=359, Unknown=0, NotChecked=0, Total=420 [2022-04-05 09:30:44,915 INFO L87 Difference]: Start difference. First operand 692 states and 895 transitions. Second operand has 21 states, 20 states have (on average 2.45) internal successors, (49), 10 states have internal predecessors, (49), 4 states have call successors, (10), 10 states have call predecessors, (10), 4 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) [2022-04-05 09:30:46,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 09:30:46,379 INFO L93 Difference]: Finished difference Result 786 states and 1032 transitions. [2022-04-05 09:30:46,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-04-05 09:30:46,379 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 09:30:46,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 09:30:46,381 INFO L225 Difference]: With dead ends: 786 [2022-04-05 09:30:46,381 INFO L226 Difference]: Without dead ends: 761 [2022-04-05 09:30:46,382 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=120, Invalid=692, Unknown=0, NotChecked=0, Total=812 [2022-04-05 09:30:46,382 INFO L913 BasicCegarLoop]: 507 mSDtfsCounter, 886 mSDsluCounter, 2239 mSDsCounter, 0 mSdLazyCounter, 5123 mSolverCounterSat, 332 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 890 SdHoareTripleChecker+Valid, 2746 SdHoareTripleChecker+Invalid, 5455 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 332 IncrementalHoareTripleChecker+Valid, 5123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-04-05 09:30:46,382 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [890 Valid, 2746 Invalid, 5455 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [332 Valid, 5123 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-04-05 09:30:46,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 761 states. [2022-04-05 09:30:46,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 761 to 690. [2022-04-05 09:30:46,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 690 states, 546 states have (on average 1.3003663003663004) internal successors, (710), 560 states have internal predecessors, (710), 81 states have call successors, (81), 47 states have call predecessors, (81), 62 states have return successors, (100), 89 states have call predecessors, (100), 75 states have call successors, (100) [2022-04-05 09:30:46,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 690 states to 690 states and 891 transitions. [2022-04-05 09:30:46,440 INFO L78 Accepts]: Start accepts. Automaton has 690 states and 891 transitions. Word has length 67 [2022-04-05 09:30:46,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 09:30:46,440 INFO L478 AbstractCegarLoop]: Abstraction has 690 states and 891 transitions. [2022-04-05 09:30:46,440 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 09:30:46,440 INFO L276 IsEmpty]: Start isEmpty. Operand 690 states and 891 transitions. [2022-04-05 09:30:46,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-04-05 09:30:46,441 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 09:30:46,441 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 09:30:46,441 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2022-04-05 09:30:46,442 INFO L403 AbstractCegarLoop]: === Iteration 43 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 09:30:46,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 09:30:46,442 INFO L85 PathProgramCache]: Analyzing trace with hash 459314479, now seen corresponding path program 1 times [2022-04-05 09:30:46,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 09:30:46,442 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147997844] [2022-04-05 09:30:46,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 09:30:46,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 09:30:46,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:46,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 09:30:46,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:46,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 09:30:46,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:46,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-05 09:30:46,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:46,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-05 09:30:46,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:46,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-05 09:30:46,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:46,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-05 09:30:46,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:46,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-04-05 09:30:46,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:46,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-05 09:30:46,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:46,674 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 09:30:46,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 09:30:46,674 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147997844] [2022-04-05 09:30:46,674 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1147997844] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 09:30:46,674 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 09:30:46,674 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-04-05 09:30:46,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111514728] [2022-04-05 09:30:46,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 09:30:46,675 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-04-05 09:30:46,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 09:30:46,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-04-05 09:30:46,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=359, Unknown=0, NotChecked=0, Total=420 [2022-04-05 09:30:46,675 INFO L87 Difference]: Start difference. First operand 690 states and 891 transitions. Second operand has 21 states, 20 states have (on average 2.4) internal successors, (48), 10 states have internal predecessors, (48), 4 states have call successors, (10), 10 states have call predecessors, (10), 4 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) [2022-04-05 09:30:48,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 09:30:48,759 INFO L93 Difference]: Finished difference Result 781 states and 1023 transitions. [2022-04-05 09:30:48,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-04-05 09:30:48,759 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 09:30:48,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 09:30:48,761 INFO L225 Difference]: With dead ends: 781 [2022-04-05 09:30:48,761 INFO L226 Difference]: Without dead ends: 756 [2022-04-05 09:30:48,761 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=120, Invalid=692, Unknown=0, NotChecked=0, Total=812 [2022-04-05 09:30:48,762 INFO L913 BasicCegarLoop]: 485 mSDtfsCounter, 1391 mSDsluCounter, 1977 mSDsCounter, 0 mSdLazyCounter, 5011 mSolverCounterSat, 523 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1394 SdHoareTripleChecker+Valid, 2462 SdHoareTripleChecker+Invalid, 5534 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 523 IncrementalHoareTripleChecker+Valid, 5011 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-04-05 09:30:48,762 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1394 Valid, 2462 Invalid, 5534 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [523 Valid, 5011 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-04-05 09:30:48,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 756 states. [2022-04-05 09:30:48,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 756 to 688. [2022-04-05 09:30:48,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 688 states, 545 states have (on average 1.2990825688073395) internal successors, (708), 559 states have internal predecessors, (708), 80 states have call successors, (80), 47 states have call predecessors, (80), 62 states have return successors, (99), 88 states have call predecessors, (99), 74 states have call successors, (99) [2022-04-05 09:30:48,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 688 states to 688 states and 887 transitions. [2022-04-05 09:30:48,819 INFO L78 Accepts]: Start accepts. Automaton has 688 states and 887 transitions. Word has length 66 [2022-04-05 09:30:48,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 09:30:48,819 INFO L478 AbstractCegarLoop]: Abstraction has 688 states and 887 transitions. [2022-04-05 09:30:48,819 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 09:30:48,819 INFO L276 IsEmpty]: Start isEmpty. Operand 688 states and 887 transitions. [2022-04-05 09:30:48,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-04-05 09:30:48,820 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 09:30:48,820 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 09:30:48,820 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2022-04-05 09:30:48,820 INFO L403 AbstractCegarLoop]: === Iteration 44 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 09:30:48,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 09:30:48,820 INFO L85 PathProgramCache]: Analyzing trace with hash 1659747958, now seen corresponding path program 1 times [2022-04-05 09:30:48,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 09:30:48,821 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269615893] [2022-04-05 09:30:48,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 09:30:48,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 09:30:48,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:48,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 09:30:48,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:48,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 09:30:48,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:48,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-05 09:30:48,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:48,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-05 09:30:48,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:48,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-05 09:30:48,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:48,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-05 09:30:48,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:48,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-05 09:30:48,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:48,939 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 09:30:48,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 09:30:48,939 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269615893] [2022-04-05 09:30:48,939 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1269615893] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 09:30:48,939 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 09:30:48,939 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-04-05 09:30:48,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394182346] [2022-04-05 09:30:48,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 09:30:48,939 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-04-05 09:30:48,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 09:30:48,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-04-05 09:30:48,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2022-04-05 09:30:48,940 INFO L87 Difference]: Start difference. First operand 688 states and 887 transitions. Second operand has 12 states, 12 states have (on average 4.083333333333333) internal successors, (49), 5 states have internal predecessors, (49), 3 states have call successors, (9), 9 states have call predecessors, (9), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-04-05 09:30:49,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 09:30:49,866 INFO L93 Difference]: Finished difference Result 820 states and 1069 transitions. [2022-04-05 09:30:49,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-04-05 09:30:49,866 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 09:30:49,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 09:30:49,868 INFO L225 Difference]: With dead ends: 820 [2022-04-05 09:30:49,868 INFO L226 Difference]: Without dead ends: 787 [2022-04-05 09:30:49,869 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=138, Invalid=282, Unknown=0, NotChecked=0, Total=420 [2022-04-05 09:30:49,869 INFO L913 BasicCegarLoop]: 486 mSDtfsCounter, 738 mSDsluCounter, 683 mSDsCounter, 0 mSdLazyCounter, 1579 mSolverCounterSat, 246 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 741 SdHoareTripleChecker+Valid, 1169 SdHoareTripleChecker+Invalid, 1825 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 246 IncrementalHoareTripleChecker+Valid, 1579 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-04-05 09:30:49,869 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [741 Valid, 1169 Invalid, 1825 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [246 Valid, 1579 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-04-05 09:30:49,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 787 states. [2022-04-05 09:30:49,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 787 to 694. [2022-04-05 09:30:49,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 694 states, 550 states have (on average 1.298181818181818) internal successors, (714), 564 states have internal predecessors, (714), 81 states have call successors, (81), 47 states have call predecessors, (81), 62 states have return successors, (100), 89 states have call predecessors, (100), 75 states have call successors, (100) [2022-04-05 09:30:49,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 694 states to 694 states and 895 transitions. [2022-04-05 09:30:49,930 INFO L78 Accepts]: Start accepts. Automaton has 694 states and 895 transitions. Word has length 65 [2022-04-05 09:30:49,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 09:30:49,930 INFO L478 AbstractCegarLoop]: Abstraction has 694 states and 895 transitions. [2022-04-05 09:30:49,930 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 09:30:49,930 INFO L276 IsEmpty]: Start isEmpty. Operand 694 states and 895 transitions. [2022-04-05 09:30:49,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-04-05 09:30:49,931 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 09:30:49,931 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 09:30:49,931 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2022-04-05 09:30:49,931 INFO L403 AbstractCegarLoop]: === Iteration 45 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 09:30:49,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 09:30:49,931 INFO L85 PathProgramCache]: Analyzing trace with hash -697612646, now seen corresponding path program 1 times [2022-04-05 09:30:49,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 09:30:49,931 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673434673] [2022-04-05 09:30:49,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 09:30:49,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 09:30:49,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:49,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 09:30:49,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:49,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 09:30:49,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:50,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-05 09:30:50,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:50,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-05 09:30:50,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:50,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-05 09:30:50,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:50,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-04-05 09:30:50,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:50,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-04-05 09:30:50,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:50,069 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 09:30:50,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 09:30:50,070 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673434673] [2022-04-05 09:30:50,070 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [673434673] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 09:30:50,070 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 09:30:50,070 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-04-05 09:30:50,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274266420] [2022-04-05 09:30:50,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 09:30:50,070 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-04-05 09:30:50,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 09:30:50,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-04-05 09:30:50,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2022-04-05 09:30:50,071 INFO L87 Difference]: Start difference. First operand 694 states and 895 transitions. Second operand has 12 states, 12 states have (on average 4.166666666666667) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-04-05 09:30:50,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 09:30:50,872 INFO L93 Difference]: Finished difference Result 818 states and 1062 transitions. [2022-04-05 09:30:50,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-04-05 09:30:50,873 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 09:30:50,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 09:30:50,881 INFO L225 Difference]: With dead ends: 818 [2022-04-05 09:30:50,881 INFO L226 Difference]: Without dead ends: 764 [2022-04-05 09:30:50,882 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 09:30:50,882 INFO L913 BasicCegarLoop]: 492 mSDtfsCounter, 1382 mSDsluCounter, 774 mSDsCounter, 0 mSdLazyCounter, 1506 mSolverCounterSat, 510 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1384 SdHoareTripleChecker+Valid, 1266 SdHoareTripleChecker+Invalid, 2016 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 510 IncrementalHoareTripleChecker+Valid, 1506 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-04-05 09:30:50,882 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1384 Valid, 1266 Invalid, 2016 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [510 Valid, 1506 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-04-05 09:30:50,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 764 states. [2022-04-05 09:30:50,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 764 to 694. [2022-04-05 09:30:50,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 694 states, 550 states have (on average 1.2945454545454544) internal successors, (712), 564 states have internal predecessors, (712), 81 states have call successors, (81), 47 states have call predecessors, (81), 62 states have return successors, (100), 89 states have call predecessors, (100), 75 states have call successors, (100) [2022-04-05 09:30:50,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 694 states to 694 states and 893 transitions. [2022-04-05 09:30:50,942 INFO L78 Accepts]: Start accepts. Automaton has 694 states and 893 transitions. Word has length 66 [2022-04-05 09:30:50,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 09:30:50,942 INFO L478 AbstractCegarLoop]: Abstraction has 694 states and 893 transitions. [2022-04-05 09:30:50,942 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 09:30:50,942 INFO L276 IsEmpty]: Start isEmpty. Operand 694 states and 893 transitions. [2022-04-05 09:30:50,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-04-05 09:30:50,943 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 09:30:50,943 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 09:30:50,943 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2022-04-05 09:30:50,943 INFO L403 AbstractCegarLoop]: === Iteration 46 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 09:30:50,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 09:30:50,944 INFO L85 PathProgramCache]: Analyzing trace with hash -346812709, now seen corresponding path program 1 times [2022-04-05 09:30:50,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 09:30:50,944 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883856038] [2022-04-05 09:30:50,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 09:30:50,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 09:30:50,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:50,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 09:30:50,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:51,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 09:30:51,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:51,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-05 09:30:51,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:51,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-05 09:30:51,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:51,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-05 09:30:51,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:51,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-04-05 09:30:51,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:51,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-04-05 09:30:51,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:51,112 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 09:30:51,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 09:30:51,113 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883856038] [2022-04-05 09:30:51,113 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1883856038] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 09:30:51,113 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 09:30:51,113 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-04-05 09:30:51,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073480631] [2022-04-05 09:30:51,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 09:30:51,114 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-04-05 09:30:51,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 09:30:51,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-04-05 09:30:51,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2022-04-05 09:30:51,114 INFO L87 Difference]: Start difference. First operand 694 states and 893 transitions. Second operand has 16 states, 16 states have (on average 3.125) internal successors, (50), 7 states have internal predecessors, (50), 3 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 4 states have call predecessors, (7), 2 states have call successors, (7) [2022-04-05 09:30:52,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 09:30:52,647 INFO L93 Difference]: Finished difference Result 789 states and 1029 transitions. [2022-04-05 09:30:52,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-04-05 09:30:52,648 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 09:30:52,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 09:30:52,649 INFO L225 Difference]: With dead ends: 789 [2022-04-05 09:30:52,649 INFO L226 Difference]: Without dead ends: 712 [2022-04-05 09:30:52,650 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 09:30:52,652 INFO L913 BasicCegarLoop]: 499 mSDtfsCounter, 1151 mSDsluCounter, 1579 mSDsCounter, 0 mSdLazyCounter, 3591 mSolverCounterSat, 434 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1156 SdHoareTripleChecker+Valid, 2078 SdHoareTripleChecker+Invalid, 4025 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 434 IncrementalHoareTripleChecker+Valid, 3591 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-04-05 09:30:52,652 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1156 Valid, 2078 Invalid, 4025 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [434 Valid, 3591 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-04-05 09:30:52,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 712 states. [2022-04-05 09:30:52,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 712 to 657. [2022-04-05 09:30:52,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 657 states, 520 states have (on average 1.2807692307692307) internal successors, (666), 534 states have internal predecessors, (666), 74 states have call successors, (74), 47 states have call predecessors, (74), 62 states have return successors, (92), 82 states have call predecessors, (92), 68 states have call successors, (92) [2022-04-05 09:30:52,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 657 states to 657 states and 832 transitions. [2022-04-05 09:30:52,705 INFO L78 Accepts]: Start accepts. Automaton has 657 states and 832 transitions. Word has length 66 [2022-04-05 09:30:52,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 09:30:52,705 INFO L478 AbstractCegarLoop]: Abstraction has 657 states and 832 transitions. [2022-04-05 09:30:52,705 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 09:30:52,705 INFO L276 IsEmpty]: Start isEmpty. Operand 657 states and 832 transitions. [2022-04-05 09:30:52,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-04-05 09:30:52,706 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 09:30:52,706 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 09:30:52,706 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2022-04-05 09:30:52,706 INFO L403 AbstractCegarLoop]: === Iteration 47 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 09:30:52,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 09:30:52,706 INFO L85 PathProgramCache]: Analyzing trace with hash 255041077, now seen corresponding path program 1 times [2022-04-05 09:30:52,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 09:30:52,707 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241430979] [2022-04-05 09:30:52,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 09:30:52,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 09:30:52,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:52,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 09:30:52,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:52,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 09:30:52,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:52,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-05 09:30:52,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:52,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-05 09:30:52,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:52,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-04-05 09:30:52,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:52,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-04-05 09:30:52,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:52,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-05 09:30:52,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:52,864 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 09:30:52,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 09:30:52,864 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241430979] [2022-04-05 09:30:52,864 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [241430979] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 09:30:52,864 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 09:30:52,864 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-04-05 09:30:52,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041971105] [2022-04-05 09:30:52,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 09:30:52,865 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-04-05 09:30:52,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 09:30:52,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-04-05 09:30:52,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-04-05 09:30:52,865 INFO L87 Difference]: Start difference. First operand 657 states and 832 transitions. Second operand has 10 states, 10 states have (on average 5.1) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (9), 9 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2022-04-05 09:30:54,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 09:30:54,042 INFO L93 Difference]: Finished difference Result 841 states and 1078 transitions. [2022-04-05 09:30:54,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-04-05 09:30:54,042 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 09:30:54,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 09:30:54,044 INFO L225 Difference]: With dead ends: 841 [2022-04-05 09:30:54,044 INFO L226 Difference]: Without dead ends: 829 [2022-04-05 09:30:54,044 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 09:30:54,045 INFO L913 BasicCegarLoop]: 464 mSDtfsCounter, 479 mSDsluCounter, 445 mSDsCounter, 0 mSdLazyCounter, 1387 mSolverCounterSat, 161 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 493 SdHoareTripleChecker+Valid, 909 SdHoareTripleChecker+Invalid, 1548 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 161 IncrementalHoareTripleChecker+Valid, 1387 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-04-05 09:30:54,046 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [493 Valid, 909 Invalid, 1548 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [161 Valid, 1387 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-04-05 09:30:54,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 829 states. [2022-04-05 09:30:54,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 829 to 703. [2022-04-05 09:30:54,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 703 states, 556 states have (on average 1.2733812949640289) internal successors, (708), 572 states have internal predecessors, (708), 76 states have call successors, (76), 49 states have call predecessors, (76), 70 states have return successors, (100), 90 states have call predecessors, (100), 70 states have call successors, (100) [2022-04-05 09:30:54,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 703 states to 703 states and 884 transitions. [2022-04-05 09:30:54,113 INFO L78 Accepts]: Start accepts. Automaton has 703 states and 884 transitions. Word has length 67 [2022-04-05 09:30:54,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 09:30:54,113 INFO L478 AbstractCegarLoop]: Abstraction has 703 states and 884 transitions. [2022-04-05 09:30:54,113 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 09:30:54,113 INFO L276 IsEmpty]: Start isEmpty. Operand 703 states and 884 transitions. [2022-04-05 09:30:54,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-04-05 09:30:54,114 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 09:30:54,114 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 09:30:54,114 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2022-04-05 09:30:54,115 INFO L403 AbstractCegarLoop]: === Iteration 48 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 09:30:54,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 09:30:54,115 INFO L85 PathProgramCache]: Analyzing trace with hash -2058592464, now seen corresponding path program 1 times [2022-04-05 09:30:54,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 09:30:54,115 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397503200] [2022-04-05 09:30:54,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 09:30:54,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 09:30:54,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:54,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 09:30:54,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:54,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 09:30:54,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:54,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-05 09:30:54,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:54,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-05 09:30:54,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:54,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-05 09:30:54,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:54,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-04-05 09:30:54,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:54,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-05 09:30:54,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:54,249 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 09:30:54,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 09:30:54,249 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397503200] [2022-04-05 09:30:54,249 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1397503200] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 09:30:54,249 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 09:30:54,250 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-04-05 09:30:54,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268637757] [2022-04-05 09:30:54,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 09:30:54,250 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-04-05 09:30:54,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 09:30:54,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-04-05 09:30:54,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2022-04-05 09:30:54,250 INFO L87 Difference]: Start difference. First operand 703 states and 884 transitions. Second operand has 12 states, 12 states have (on average 4.25) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-04-05 09:30:54,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 09:30:54,990 INFO L93 Difference]: Finished difference Result 786 states and 995 transitions. [2022-04-05 09:30:54,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-04-05 09:30:54,990 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 09:30:54,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 09:30:54,992 INFO L225 Difference]: With dead ends: 786 [2022-04-05 09:30:54,992 INFO L226 Difference]: Without dead ends: 747 [2022-04-05 09:30:54,992 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2022-04-05 09:30:54,993 INFO L913 BasicCegarLoop]: 439 mSDtfsCounter, 950 mSDsluCounter, 779 mSDsCounter, 0 mSdLazyCounter, 1456 mSolverCounterSat, 360 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 952 SdHoareTripleChecker+Valid, 1218 SdHoareTripleChecker+Invalid, 1816 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 360 IncrementalHoareTripleChecker+Valid, 1456 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-04-05 09:30:54,993 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [952 Valid, 1218 Invalid, 1816 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [360 Valid, 1456 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-04-05 09:30:54,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 747 states. [2022-04-05 09:30:55,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 747 to 698. [2022-04-05 09:30:55,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 698 states, 552 states have (on average 1.2735507246376812) internal successors, (703), 568 states have internal predecessors, (703), 75 states have call successors, (75), 49 states have call predecessors, (75), 70 states have return successors, (99), 89 states have call predecessors, (99), 69 states have call successors, (99) [2022-04-05 09:30:55,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 698 states to 698 states and 877 transitions. [2022-04-05 09:30:55,053 INFO L78 Accepts]: Start accepts. Automaton has 698 states and 877 transitions. Word has length 67 [2022-04-05 09:30:55,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 09:30:55,054 INFO L478 AbstractCegarLoop]: Abstraction has 698 states and 877 transitions. [2022-04-05 09:30:55,054 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 09:30:55,054 INFO L276 IsEmpty]: Start isEmpty. Operand 698 states and 877 transitions. [2022-04-05 09:30:55,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-04-05 09:30:55,055 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 09:30:55,055 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 09:30:55,055 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2022-04-05 09:30:55,055 INFO L403 AbstractCegarLoop]: === Iteration 49 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 09:30:55,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 09:30:55,055 INFO L85 PathProgramCache]: Analyzing trace with hash -238065346, now seen corresponding path program 1 times [2022-04-05 09:30:55,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 09:30:55,055 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867360936] [2022-04-05 09:30:55,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 09:30:55,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 09:30:55,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:55,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 09:30:55,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:55,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 09:30:55,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:55,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-05 09:30:55,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:55,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-05 09:30:55,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:55,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-04-05 09:30:55,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:55,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-04-05 09:30:55,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:55,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-05 09:30:55,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:55,177 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 09:30:55,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 09:30:55,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867360936] [2022-04-05 09:30:55,177 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [867360936] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 09:30:55,177 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 09:30:55,177 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-04-05 09:30:55,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793911582] [2022-04-05 09:30:55,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 09:30:55,178 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-04-05 09:30:55,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 09:30:55,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-04-05 09:30:55,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-04-05 09:30:55,178 INFO L87 Difference]: Start difference. First operand 698 states and 877 transitions. Second operand has 10 states, 10 states have (on average 5.2) internal successors, (52), 3 states have internal predecessors, (52), 2 states have call successors, (9), 9 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2022-04-05 09:30:55,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 09:30:55,826 INFO L93 Difference]: Finished difference Result 778 states and 992 transitions. [2022-04-05 09:30:55,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-04-05 09:30:55,827 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.2) internal successors, (52), 3 states have internal predecessors, (52), 2 states have call successors, (9), 9 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) Word has length 68 [2022-04-05 09:30:55,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 09:30:55,828 INFO L225 Difference]: With dead ends: 778 [2022-04-05 09:30:55,828 INFO L226 Difference]: Without dead ends: 733 [2022-04-05 09:30:55,829 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 9 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=98, Unknown=0, NotChecked=0, Total=156 [2022-04-05 09:30:55,830 INFO L913 BasicCegarLoop]: 453 mSDtfsCounter, 1307 mSDsluCounter, 377 mSDsCounter, 0 mSdLazyCounter, 752 mSolverCounterSat, 465 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1323 SdHoareTripleChecker+Valid, 830 SdHoareTripleChecker+Invalid, 1217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 465 IncrementalHoareTripleChecker+Valid, 752 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-04-05 09:30:55,831 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1323 Valid, 830 Invalid, 1217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [465 Valid, 752 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-04-05 09:30:55,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 733 states. [2022-04-05 09:30:55,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 733 to 679. [2022-04-05 09:30:55,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 679 states, 538 states have (on average 1.2639405204460967) internal successors, (680), 553 states have internal predecessors, (680), 74 states have call successors, (74), 48 states have call predecessors, (74), 66 states have return successors, (95), 85 states have call predecessors, (95), 68 states have call successors, (95) [2022-04-05 09:30:55,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 679 states to 679 states and 849 transitions. [2022-04-05 09:30:55,892 INFO L78 Accepts]: Start accepts. Automaton has 679 states and 849 transitions. Word has length 68 [2022-04-05 09:30:55,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 09:30:55,892 INFO L478 AbstractCegarLoop]: Abstraction has 679 states and 849 transitions. [2022-04-05 09:30:55,892 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.2) internal successors, (52), 3 states have internal predecessors, (52), 2 states have call successors, (9), 9 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2022-04-05 09:30:55,892 INFO L276 IsEmpty]: Start isEmpty. Operand 679 states and 849 transitions. [2022-04-05 09:30:55,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-04-05 09:30:55,893 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 09:30:55,893 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 09:30:55,893 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2022-04-05 09:30:55,893 INFO L403 AbstractCegarLoop]: === Iteration 50 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 09:30:55,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 09:30:55,894 INFO L85 PathProgramCache]: Analyzing trace with hash -653091009, now seen corresponding path program 1 times [2022-04-05 09:30:55,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 09:30:55,894 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587053013] [2022-04-05 09:30:55,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 09:30:55,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 09:30:55,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:55,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 09:30:55,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:56,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 09:30:56,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:56,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-05 09:30:56,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:56,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-05 09:30:56,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:56,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-04-05 09:30:56,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:56,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-04-05 09:30:56,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:56,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-05 09:30:56,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:56,099 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 09:30:56,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 09:30:56,099 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587053013] [2022-04-05 09:30:56,100 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1587053013] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 09:30:56,100 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 09:30:56,100 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-04-05 09:30:56,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654518601] [2022-04-05 09:30:56,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 09:30:56,100 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-04-05 09:30:56,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 09:30:56,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-04-05 09:30:56,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2022-04-05 09:30:56,100 INFO L87 Difference]: Start difference. First operand 679 states and 849 transitions. Second operand has 12 states, 12 states have (on average 4.333333333333333) internal successors, (52), 5 states have internal predecessors, (52), 3 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 4 states have call predecessors, (7), 2 states have call successors, (7) [2022-04-05 09:30:57,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 09:30:57,304 INFO L93 Difference]: Finished difference Result 812 states and 1032 transitions. [2022-04-05 09:30:57,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-04-05 09:30:57,304 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 09:30:57,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 09:30:57,306 INFO L225 Difference]: With dead ends: 812 [2022-04-05 09:30:57,306 INFO L226 Difference]: Without dead ends: 803 [2022-04-05 09:30:57,306 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=113, Invalid=267, Unknown=0, NotChecked=0, Total=380 [2022-04-05 09:30:57,306 INFO L913 BasicCegarLoop]: 455 mSDtfsCounter, 1020 mSDsluCounter, 423 mSDsCounter, 0 mSdLazyCounter, 1371 mSolverCounterSat, 343 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1027 SdHoareTripleChecker+Valid, 878 SdHoareTripleChecker+Invalid, 1714 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 343 IncrementalHoareTripleChecker+Valid, 1371 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-04-05 09:30:57,306 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1027 Valid, 878 Invalid, 1714 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [343 Valid, 1371 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-04-05 09:30:57,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 803 states. [2022-04-05 09:30:57,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 803 to 679. [2022-04-05 09:30:57,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 679 states, 538 states have (on average 1.2602230483271375) internal successors, (678), 553 states have internal predecessors, (678), 74 states have call successors, (74), 48 states have call predecessors, (74), 66 states have return successors, (95), 85 states have call predecessors, (95), 68 states have call successors, (95) [2022-04-05 09:30:57,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 679 states to 679 states and 847 transitions. [2022-04-05 09:30:57,365 INFO L78 Accepts]: Start accepts. Automaton has 679 states and 847 transitions. Word has length 68 [2022-04-05 09:30:57,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 09:30:57,365 INFO L478 AbstractCegarLoop]: Abstraction has 679 states and 847 transitions. [2022-04-05 09:30:57,365 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 09:30:57,365 INFO L276 IsEmpty]: Start isEmpty. Operand 679 states and 847 transitions. [2022-04-05 09:30:57,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-04-05 09:30:57,366 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 09:30:57,366 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 09:30:57,366 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2022-04-05 09:30:57,366 INFO L403 AbstractCegarLoop]: === Iteration 51 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 09:30:57,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 09:30:57,367 INFO L85 PathProgramCache]: Analyzing trace with hash -1034853120, now seen corresponding path program 1 times [2022-04-05 09:30:57,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 09:30:57,367 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407083412] [2022-04-05 09:30:57,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 09:30:57,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 09:30:57,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:57,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 09:30:57,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:57,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 09:30:57,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:57,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-05 09:30:57,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:57,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-05 09:30:57,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:57,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-05 09:30:57,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:57,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-05 09:30:57,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:57,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-04-05 09:30:57,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:57,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-04-05 09:30:57,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:57,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-05 09:30:57,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:57,607 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 09:30:57,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 09:30:57,607 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407083412] [2022-04-05 09:30:57,607 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [407083412] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 09:30:57,607 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 09:30:57,607 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-04-05 09:30:57,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230963180] [2022-04-05 09:30:57,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 09:30:57,607 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-04-05 09:30:57,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 09:30:57,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-04-05 09:30:57,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=359, Unknown=0, NotChecked=0, Total=420 [2022-04-05 09:30:57,608 INFO L87 Difference]: Start difference. First operand 679 states and 847 transitions. Second operand has 21 states, 20 states have (on average 2.7) internal successors, (54), 10 states have internal predecessors, (54), 4 states have call successors, (11), 10 states have call predecessors, (11), 4 states have return successors, (9), 5 states have call predecessors, (9), 3 states have call successors, (9) [2022-04-05 09:30:59,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 09:30:59,233 INFO L93 Difference]: Finished difference Result 768 states and 974 transitions. [2022-04-05 09:30:59,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-04-05 09:30:59,233 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 09:30:59,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 09:30:59,235 INFO L225 Difference]: With dead ends: 768 [2022-04-05 09:30:59,235 INFO L226 Difference]: Without dead ends: 743 [2022-04-05 09:30:59,235 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 09:30:59,236 INFO L913 BasicCegarLoop]: 446 mSDtfsCounter, 765 mSDsluCounter, 2143 mSDsCounter, 0 mSdLazyCounter, 4385 mSolverCounterSat, 286 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 770 SdHoareTripleChecker+Valid, 2589 SdHoareTripleChecker+Invalid, 4671 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 286 IncrementalHoareTripleChecker+Valid, 4385 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-04-05 09:30:59,236 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [770 Valid, 2589 Invalid, 4671 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [286 Valid, 4385 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-04-05 09:30:59,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 743 states. [2022-04-05 09:30:59,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 743 to 677. [2022-04-05 09:30:59,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 677 states, 537 states have (on average 1.2588454376163873) internal successors, (676), 552 states have internal predecessors, (676), 73 states have call successors, (73), 48 states have call predecessors, (73), 66 states have return successors, (94), 84 states have call predecessors, (94), 67 states have call successors, (94) [2022-04-05 09:30:59,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 677 states to 677 states and 843 transitions. [2022-04-05 09:30:59,295 INFO L78 Accepts]: Start accepts. Automaton has 677 states and 843 transitions. Word has length 74 [2022-04-05 09:30:59,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 09:30:59,295 INFO L478 AbstractCegarLoop]: Abstraction has 677 states and 843 transitions. [2022-04-05 09:30:59,295 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 09:30:59,295 INFO L276 IsEmpty]: Start isEmpty. Operand 677 states and 843 transitions. [2022-04-05 09:30:59,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-04-05 09:30:59,296 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 09:30:59,296 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 09:30:59,296 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2022-04-05 09:30:59,296 INFO L403 AbstractCegarLoop]: === Iteration 52 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 09:30:59,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 09:30:59,296 INFO L85 PathProgramCache]: Analyzing trace with hash -8057471, now seen corresponding path program 1 times [2022-04-05 09:30:59,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 09:30:59,297 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932577333] [2022-04-05 09:30:59,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 09:30:59,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 09:30:59,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:59,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 09:30:59,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:59,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 09:30:59,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:59,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-05 09:30:59,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:59,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-05 09:30:59,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:59,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-05 09:30:59,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:59,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-04-05 09:30:59,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:59,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-04-05 09:30:59,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:59,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-05 09:30:59,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:30:59,589 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 09:30:59,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 09:30:59,589 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932577333] [2022-04-05 09:30:59,589 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1932577333] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 09:30:59,589 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 09:30:59,589 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2022-04-05 09:30:59,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080580817] [2022-04-05 09:30:59,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 09:30:59,589 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-04-05 09:30:59,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 09:30:59,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-04-05 09:30:59,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=441, Unknown=0, NotChecked=0, Total=506 [2022-04-05 09:30:59,590 INFO L87 Difference]: Start difference. First operand 677 states and 843 transitions. Second operand has 23 states, 22 states have (on average 2.3636363636363638) internal successors, (52), 11 states have internal predecessors, (52), 4 states have call successors, (10), 10 states have call predecessors, (10), 5 states have return successors, (8), 6 states have call predecessors, (8), 3 states have call successors, (8) [2022-04-05 09:31:01,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 09:31:01,329 INFO L93 Difference]: Finished difference Result 749 states and 942 transitions. [2022-04-05 09:31:01,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-04-05 09:31:01,329 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 09:31:01,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 09:31:01,330 INFO L225 Difference]: With dead ends: 749 [2022-04-05 09:31:01,330 INFO L226 Difference]: Without dead ends: 721 [2022-04-05 09:31:01,331 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 09:31:01,331 INFO L913 BasicCegarLoop]: 438 mSDtfsCounter, 733 mSDsluCounter, 2338 mSDsCounter, 0 mSdLazyCounter, 5042 mSolverCounterSat, 275 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 735 SdHoareTripleChecker+Valid, 2776 SdHoareTripleChecker+Invalid, 5317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 275 IncrementalHoareTripleChecker+Valid, 5042 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-04-05 09:31:01,331 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [735 Valid, 2776 Invalid, 5317 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [275 Valid, 5042 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-04-05 09:31:01,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 721 states. [2022-04-05 09:31:01,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 721 to 673. [2022-04-05 09:31:01,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 673 states, 534 states have (on average 1.2584269662921348) internal successors, (672), 549 states have internal predecessors, (672), 72 states have call successors, (72), 48 states have call predecessors, (72), 66 states have return successors, (93), 83 states have call predecessors, (93), 66 states have call successors, (93) [2022-04-05 09:31:01,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 673 states to 673 states and 837 transitions. [2022-04-05 09:31:01,389 INFO L78 Accepts]: Start accepts. Automaton has 673 states and 837 transitions. Word has length 70 [2022-04-05 09:31:01,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 09:31:01,389 INFO L478 AbstractCegarLoop]: Abstraction has 673 states and 837 transitions. [2022-04-05 09:31:01,389 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 09:31:01,389 INFO L276 IsEmpty]: Start isEmpty. Operand 673 states and 837 transitions. [2022-04-05 09:31:01,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-04-05 09:31:01,390 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 09:31:01,390 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 09:31:01,390 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2022-04-05 09:31:01,391 INFO L403 AbstractCegarLoop]: === Iteration 53 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 09:31:01,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 09:31:01,391 INFO L85 PathProgramCache]: Analyzing trace with hash 300413188, now seen corresponding path program 1 times [2022-04-05 09:31:01,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 09:31:01,391 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817318348] [2022-04-05 09:31:01,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 09:31:01,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 09:31:01,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:01,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 09:31:01,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:01,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 09:31:01,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:01,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-05 09:31:01,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:01,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-05 09:31:01,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:01,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-04-05 09:31:01,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:01,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-04-05 09:31:01,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:01,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-05 09:31:01,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:01,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-05 09:31:01,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 09:31:01,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817318348] [2022-04-05 09:31:01,536 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [817318348] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 09:31:01,536 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 09:31:01,536 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-04-05 09:31:01,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746654783] [2022-04-05 09:31:01,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 09:31:01,536 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-04-05 09:31:01,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 09:31:01,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-04-05 09:31:01,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2022-04-05 09:31:01,537 INFO L87 Difference]: Start difference. First operand 673 states and 837 transitions. Second operand has 12 states, 12 states have (on average 4.416666666666667) internal successors, (53), 5 states have internal predecessors, (53), 3 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 4 states have call predecessors, (7), 2 states have call successors, (7) [2022-04-05 09:31:02,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 09:31:02,727 INFO L93 Difference]: Finished difference Result 800 states and 1011 transitions. [2022-04-05 09:31:02,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-04-05 09:31:02,727 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 09:31:02,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 09:31:02,729 INFO L225 Difference]: With dead ends: 800 [2022-04-05 09:31:02,729 INFO L226 Difference]: Without dead ends: 796 [2022-04-05 09:31:02,730 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=137, Invalid=325, Unknown=0, NotChecked=0, Total=462 [2022-04-05 09:31:02,730 INFO L913 BasicCegarLoop]: 446 mSDtfsCounter, 1448 mSDsluCounter, 498 mSDsCounter, 0 mSdLazyCounter, 1846 mSolverCounterSat, 503 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1455 SdHoareTripleChecker+Valid, 944 SdHoareTripleChecker+Invalid, 2349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 503 IncrementalHoareTripleChecker+Valid, 1846 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-04-05 09:31:02,730 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1455 Valid, 944 Invalid, 2349 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [503 Valid, 1846 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-04-05 09:31:02,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 796 states. [2022-04-05 09:31:02,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 796 to 671. [2022-04-05 09:31:02,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 671 states, 532 states have (on average 1.2575187969924813) internal successors, (669), 547 states have internal predecessors, (669), 72 states have call successors, (72), 48 states have call predecessors, (72), 66 states have return successors, (93), 83 states have call predecessors, (93), 66 states have call successors, (93) [2022-04-05 09:31:02,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 671 states to 671 states and 834 transitions. [2022-04-05 09:31:02,795 INFO L78 Accepts]: Start accepts. Automaton has 671 states and 834 transitions. Word has length 69 [2022-04-05 09:31:02,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 09:31:02,797 INFO L478 AbstractCegarLoop]: Abstraction has 671 states and 834 transitions. [2022-04-05 09:31:02,797 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 09:31:02,797 INFO L276 IsEmpty]: Start isEmpty. Operand 671 states and 834 transitions. [2022-04-05 09:31:02,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-04-05 09:31:02,798 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 09:31:02,798 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 09:31:02,798 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2022-04-05 09:31:02,799 INFO L403 AbstractCegarLoop]: === Iteration 54 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 09:31:02,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 09:31:02,799 INFO L85 PathProgramCache]: Analyzing trace with hash 300444932, now seen corresponding path program 1 times [2022-04-05 09:31:02,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 09:31:02,799 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217667281] [2022-04-05 09:31:02,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 09:31:02,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 09:31:02,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:02,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 09:31:02,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:02,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 09:31:02,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:02,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-05 09:31:02,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:02,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-05 09:31:02,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:02,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-04-05 09:31:02,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:02,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-04-05 09:31:02,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:03,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-05 09:31:03,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:03,021 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 09:31:03,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 09:31:03,022 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217667281] [2022-04-05 09:31:03,022 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1217667281] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 09:31:03,022 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 09:31:03,022 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-04-05 09:31:03,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495580221] [2022-04-05 09:31:03,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 09:31:03,022 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-04-05 09:31:03,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 09:31:03,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-04-05 09:31:03,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=256, Unknown=0, NotChecked=0, Total=306 [2022-04-05 09:31:03,023 INFO L87 Difference]: Start difference. First operand 671 states and 834 transitions. Second operand has 18 states, 18 states have (on average 2.9444444444444446) internal successors, (53), 8 states have internal predecessors, (53), 2 states have call successors, (9), 9 states have call predecessors, (9), 4 states have return successors, (7), 4 states have call predecessors, (7), 1 states have call successors, (7) [2022-04-05 09:31:04,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 09:31:04,317 INFO L93 Difference]: Finished difference Result 729 states and 916 transitions. [2022-04-05 09:31:04,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-04-05 09:31:04,317 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 09:31:04,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 09:31:04,327 INFO L225 Difference]: With dead ends: 729 [2022-04-05 09:31:04,327 INFO L226 Difference]: Without dead ends: 694 [2022-04-05 09:31:04,328 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 09:31:04,328 INFO L913 BasicCegarLoop]: 387 mSDtfsCounter, 593 mSDsluCounter, 1196 mSDsCounter, 0 mSdLazyCounter, 3627 mSolverCounterSat, 207 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 606 SdHoareTripleChecker+Valid, 1583 SdHoareTripleChecker+Invalid, 3834 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 207 IncrementalHoareTripleChecker+Valid, 3627 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-04-05 09:31:04,328 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [606 Valid, 1583 Invalid, 3834 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [207 Valid, 3627 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-04-05 09:31:04,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 694 states. [2022-04-05 09:31:04,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 694 to 642. [2022-04-05 09:31:04,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 642 states, 508 states have (on average 1.2539370078740157) internal successors, (637), 522 states have internal predecessors, (637), 71 states have call successors, (71), 47 states have call predecessors, (71), 62 states have return successors, (89), 79 states have call predecessors, (89), 65 states have call successors, (89) [2022-04-05 09:31:04,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 797 transitions. [2022-04-05 09:31:04,451 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 797 transitions. Word has length 69 [2022-04-05 09:31:04,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 09:31:04,451 INFO L478 AbstractCegarLoop]: Abstraction has 642 states and 797 transitions. [2022-04-05 09:31:04,451 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 09:31:04,451 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 797 transitions. [2022-04-05 09:31:04,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-04-05 09:31:04,452 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 09:31:04,452 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 09:31:04,453 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2022-04-05 09:31:04,453 INFO L403 AbstractCegarLoop]: === Iteration 55 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 09:31:04,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 09:31:04,453 INFO L85 PathProgramCache]: Analyzing trace with hash 1365836196, now seen corresponding path program 1 times [2022-04-05 09:31:04,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 09:31:04,453 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637063827] [2022-04-05 09:31:04,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 09:31:04,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 09:31:04,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:04,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 09:31:04,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:04,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 09:31:04,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:04,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-05 09:31:04,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:04,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-05 09:31:04,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:04,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-05 09:31:04,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:04,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-04-05 09:31:04,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:04,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-04-05 09:31:04,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:04,621 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 09:31:04,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 09:31:04,621 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637063827] [2022-04-05 09:31:04,621 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [637063827] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 09:31:04,621 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 09:31:04,621 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-04-05 09:31:04,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622290671] [2022-04-05 09:31:04,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 09:31:04,621 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-04-05 09:31:04,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 09:31:04,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-04-05 09:31:04,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2022-04-05 09:31:04,622 INFO L87 Difference]: Start difference. First operand 642 states and 797 transitions. Second operand has 12 states, 12 states have (on average 4.416666666666667) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-04-05 09:31:05,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 09:31:05,571 INFO L93 Difference]: Finished difference Result 724 states and 905 transitions. [2022-04-05 09:31:05,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-04-05 09:31:05,572 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 09:31:05,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 09:31:05,575 INFO L225 Difference]: With dead ends: 724 [2022-04-05 09:31:05,575 INFO L226 Difference]: Without dead ends: 685 [2022-04-05 09:31:05,575 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 09:31:05,575 INFO L913 BasicCegarLoop]: 423 mSDtfsCounter, 906 mSDsluCounter, 746 mSDsCounter, 0 mSdLazyCounter, 1235 mSolverCounterSat, 336 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 908 SdHoareTripleChecker+Valid, 1169 SdHoareTripleChecker+Invalid, 1571 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 336 IncrementalHoareTripleChecker+Valid, 1235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-04-05 09:31:05,576 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [908 Valid, 1169 Invalid, 1571 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [336 Valid, 1235 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-04-05 09:31:05,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 685 states. [2022-04-05 09:31:05,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 685 to 637. [2022-04-05 09:31:05,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 637 states, 504 states have (on average 1.253968253968254) internal successors, (632), 518 states have internal predecessors, (632), 70 states have call successors, (70), 47 states have call predecessors, (70), 62 states have return successors, (88), 78 states have call predecessors, (88), 64 states have call successors, (88) [2022-04-05 09:31:05,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 637 states to 637 states and 790 transitions. [2022-04-05 09:31:05,672 INFO L78 Accepts]: Start accepts. Automaton has 637 states and 790 transitions. Word has length 69 [2022-04-05 09:31:05,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 09:31:05,672 INFO L478 AbstractCegarLoop]: Abstraction has 637 states and 790 transitions. [2022-04-05 09:31:05,672 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 09:31:05,672 INFO L276 IsEmpty]: Start isEmpty. Operand 637 states and 790 transitions. [2022-04-05 09:31:05,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-04-05 09:31:05,675 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 09:31:05,675 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 09:31:05,675 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2022-04-05 09:31:05,675 INFO L403 AbstractCegarLoop]: === Iteration 56 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 09:31:05,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 09:31:05,675 INFO L85 PathProgramCache]: Analyzing trace with hash -415492251, now seen corresponding path program 1 times [2022-04-05 09:31:05,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 09:31:05,680 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824203090] [2022-04-05 09:31:05,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 09:31:05,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 09:31:05,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:05,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 09:31:05,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:05,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 09:31:05,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:05,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-05 09:31:05,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:05,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-05 09:31:05,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:05,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-05 09:31:05,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:05,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-05 09:31:05,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:05,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-04-05 09:31:05,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:05,927 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 09:31:05,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 09:31:05,927 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824203090] [2022-04-05 09:31:05,927 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [824203090] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 09:31:05,927 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 09:31:05,927 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-04-05 09:31:05,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549466165] [2022-04-05 09:31:05,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 09:31:05,927 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-04-05 09:31:05,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 09:31:05,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-04-05 09:31:05,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=256, Unknown=0, NotChecked=0, Total=306 [2022-04-05 09:31:05,928 INFO L87 Difference]: Start difference. First operand 637 states and 790 transitions. Second operand has 18 states, 18 states have (on average 2.9444444444444446) internal successors, (53), 8 states have internal predecessors, (53), 3 states have call successors, (9), 9 states have call predecessors, (9), 4 states have return successors, (7), 5 states have call predecessors, (7), 2 states have call successors, (7) [2022-04-05 09:31:07,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 09:31:07,370 INFO L93 Difference]: Finished difference Result 712 states and 893 transitions. [2022-04-05 09:31:07,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-04-05 09:31:07,370 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 09:31:07,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 09:31:07,371 INFO L225 Difference]: With dead ends: 712 [2022-04-05 09:31:07,371 INFO L226 Difference]: Without dead ends: 682 [2022-04-05 09:31:07,372 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 09:31:07,375 INFO L913 BasicCegarLoop]: 438 mSDtfsCounter, 699 mSDsluCounter, 1646 mSDsCounter, 0 mSdLazyCounter, 3408 mSolverCounterSat, 252 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 702 SdHoareTripleChecker+Valid, 2084 SdHoareTripleChecker+Invalid, 3660 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 252 IncrementalHoareTripleChecker+Valid, 3408 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-04-05 09:31:07,375 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [702 Valid, 2084 Invalid, 3660 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [252 Valid, 3408 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-04-05 09:31:07,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 682 states. [2022-04-05 09:31:07,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 682 to 634. [2022-04-05 09:31:07,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 634 states, 502 states have (on average 1.252988047808765) internal successors, (629), 516 states have internal predecessors, (629), 69 states have call successors, (69), 47 states have call predecessors, (69), 62 states have return successors, (87), 77 states have call predecessors, (87), 63 states have call successors, (87) [2022-04-05 09:31:07,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 634 states to 634 states and 785 transitions. [2022-04-05 09:31:07,447 INFO L78 Accepts]: Start accepts. Automaton has 634 states and 785 transitions. Word has length 69 [2022-04-05 09:31:07,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 09:31:07,447 INFO L478 AbstractCegarLoop]: Abstraction has 634 states and 785 transitions. [2022-04-05 09:31:07,447 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 09:31:07,447 INFO L276 IsEmpty]: Start isEmpty. Operand 634 states and 785 transitions. [2022-04-05 09:31:07,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-04-05 09:31:07,448 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 09:31:07,448 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 09:31:07,448 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2022-04-05 09:31:07,448 INFO L403 AbstractCegarLoop]: === Iteration 57 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 09:31:07,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 09:31:07,448 INFO L85 PathProgramCache]: Analyzing trace with hash 135714178, now seen corresponding path program 1 times [2022-04-05 09:31:07,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 09:31:07,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908351616] [2022-04-05 09:31:07,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 09:31:07,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 09:31:07,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:07,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 09:31:07,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:07,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 09:31:07,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:07,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-05 09:31:07,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:07,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-05 09:31:07,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:07,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-05 09:31:07,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:07,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-04-05 09:31:07,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:07,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-05 09:31:07,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:07,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-05 09:31:07,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:07,626 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 09:31:07,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 09:31:07,626 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908351616] [2022-04-05 09:31:07,626 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1908351616] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 09:31:07,626 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 09:31:07,626 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-04-05 09:31:07,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401752990] [2022-04-05 09:31:07,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 09:31:07,627 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-04-05 09:31:07,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 09:31:07,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-04-05 09:31:07,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2022-04-05 09:31:07,627 INFO L87 Difference]: Start difference. First operand 634 states and 785 transitions. Second operand has 13 states, 13 states have (on average 4.076923076923077) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-04-05 09:31:08,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 09:31:08,359 INFO L93 Difference]: Finished difference Result 724 states and 902 transitions. [2022-04-05 09:31:08,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-04-05 09:31:08,359 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 09:31:08,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 09:31:08,361 INFO L225 Difference]: With dead ends: 724 [2022-04-05 09:31:08,361 INFO L226 Difference]: Without dead ends: 686 [2022-04-05 09:31:08,361 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 09:31:08,361 INFO L913 BasicCegarLoop]: 413 mSDtfsCounter, 1142 mSDsluCounter, 606 mSDsCounter, 0 mSdLazyCounter, 1149 mSolverCounterSat, 418 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1143 SdHoareTripleChecker+Valid, 1019 SdHoareTripleChecker+Invalid, 1567 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 418 IncrementalHoareTripleChecker+Valid, 1149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-04-05 09:31:08,361 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1143 Valid, 1019 Invalid, 1567 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [418 Valid, 1149 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-04-05 09:31:08,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 686 states. [2022-04-05 09:31:08,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 686 to 634. [2022-04-05 09:31:08,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 634 states, 502 states have (on average 1.250996015936255) internal successors, (628), 516 states have internal predecessors, (628), 69 states have call successors, (69), 47 states have call predecessors, (69), 62 states have return successors, (87), 77 states have call predecessors, (87), 63 states have call successors, (87) [2022-04-05 09:31:08,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 634 states to 634 states and 784 transitions. [2022-04-05 09:31:08,417 INFO L78 Accepts]: Start accepts. Automaton has 634 states and 784 transitions. Word has length 71 [2022-04-05 09:31:08,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 09:31:08,417 INFO L478 AbstractCegarLoop]: Abstraction has 634 states and 784 transitions. [2022-04-05 09:31:08,417 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 09:31:08,417 INFO L276 IsEmpty]: Start isEmpty. Operand 634 states and 784 transitions. [2022-04-05 09:31:08,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-04-05 09:31:08,418 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 09:31:08,418 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 09:31:08,418 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2022-04-05 09:31:08,419 INFO L403 AbstractCegarLoop]: === Iteration 58 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 09:31:08,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 09:31:08,419 INFO L85 PathProgramCache]: Analyzing trace with hash 1161206177, now seen corresponding path program 1 times [2022-04-05 09:31:08,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 09:31:08,419 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838732148] [2022-04-05 09:31:08,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 09:31:08,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 09:31:08,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:08,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 09:31:08,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:08,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 09:31:08,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:08,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-05 09:31:08,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:08,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-05 09:31:08,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:08,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-05 09:31:08,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:08,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-04-05 09:31:08,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:08,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-05 09:31:08,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:08,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-05 09:31:08,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:08,652 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 09:31:08,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 09:31:08,652 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838732148] [2022-04-05 09:31:08,652 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1838732148] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 09:31:08,652 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 09:31:08,652 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-04-05 09:31:08,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495707909] [2022-04-05 09:31:08,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 09:31:08,652 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-04-05 09:31:08,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 09:31:08,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-04-05 09:31:08,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=359, Unknown=0, NotChecked=0, Total=420 [2022-04-05 09:31:08,653 INFO L87 Difference]: Start difference. First operand 634 states and 784 transitions. Second operand has 21 states, 20 states have (on average 2.65) internal successors, (53), 10 states have internal predecessors, (53), 4 states have call successors, (10), 10 states have call predecessors, (10), 4 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) [2022-04-05 09:31:10,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 09:31:10,059 INFO L93 Difference]: Finished difference Result 722 states and 908 transitions. [2022-04-05 09:31:10,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-04-05 09:31:10,060 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 09:31:10,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 09:31:10,061 INFO L225 Difference]: With dead ends: 722 [2022-04-05 09:31:10,061 INFO L226 Difference]: Without dead ends: 684 [2022-04-05 09:31:10,061 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 09:31:10,062 INFO L913 BasicCegarLoop]: 422 mSDtfsCounter, 723 mSDsluCounter, 2019 mSDsCounter, 0 mSdLazyCounter, 4179 mSolverCounterSat, 271 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 727 SdHoareTripleChecker+Valid, 2441 SdHoareTripleChecker+Invalid, 4450 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 271 IncrementalHoareTripleChecker+Valid, 4179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-04-05 09:31:10,062 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [727 Valid, 2441 Invalid, 4450 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [271 Valid, 4179 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-04-05 09:31:10,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 684 states. [2022-04-05 09:31:10,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 684 to 629. [2022-04-05 09:31:10,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 629 states, 498 states have (on average 1.2469879518072289) internal successors, (621), 512 states have internal predecessors, (621), 68 states have call successors, (68), 47 states have call predecessors, (68), 62 states have return successors, (85), 76 states have call predecessors, (85), 62 states have call successors, (85) [2022-04-05 09:31:10,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 629 states to 629 states and 774 transitions. [2022-04-05 09:31:10,120 INFO L78 Accepts]: Start accepts. Automaton has 629 states and 774 transitions. Word has length 71 [2022-04-05 09:31:10,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 09:31:10,120 INFO L478 AbstractCegarLoop]: Abstraction has 629 states and 774 transitions. [2022-04-05 09:31:10,120 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 09:31:10,120 INFO L276 IsEmpty]: Start isEmpty. Operand 629 states and 774 transitions. [2022-04-05 09:31:10,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-04-05 09:31:10,121 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 09:31:10,121 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 09:31:10,121 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2022-04-05 09:31:10,121 INFO L403 AbstractCegarLoop]: === Iteration 59 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 09:31:10,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 09:31:10,122 INFO L85 PathProgramCache]: Analyzing trace with hash -1109131485, now seen corresponding path program 1 times [2022-04-05 09:31:10,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 09:31:10,122 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557991846] [2022-04-05 09:31:10,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 09:31:10,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 09:31:10,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:10,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 09:31:10,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:10,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 09:31:10,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:10,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-05 09:31:10,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:10,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-05 09:31:10,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:10,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-05 09:31:10,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:10,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-04-05 09:31:10,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:10,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-05 09:31:10,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:10,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-05 09:31:10,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:10,289 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 09:31:10,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 09:31:10,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557991846] [2022-04-05 09:31:10,289 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1557991846] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 09:31:10,289 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 09:31:10,289 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-04-05 09:31:10,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985008116] [2022-04-05 09:31:10,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 09:31:10,289 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-04-05 09:31:10,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 09:31:10,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-04-05 09:31:10,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2022-04-05 09:31:10,290 INFO L87 Difference]: Start difference. First operand 629 states and 774 transitions. Second operand has 13 states, 13 states have (on average 4.076923076923077) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-04-05 09:31:11,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 09:31:11,166 INFO L93 Difference]: Finished difference Result 717 states and 888 transitions. [2022-04-05 09:31:11,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-04-05 09:31:11,167 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 09:31:11,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 09:31:11,168 INFO L225 Difference]: With dead ends: 717 [2022-04-05 09:31:11,168 INFO L226 Difference]: Without dead ends: 673 [2022-04-05 09:31:11,168 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 09:31:11,168 INFO L913 BasicCegarLoop]: 402 mSDtfsCounter, 257 mSDsluCounter, 918 mSDsCounter, 0 mSdLazyCounter, 1624 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 258 SdHoareTripleChecker+Valid, 1320 SdHoareTripleChecker+Invalid, 1713 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 1624 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-04-05 09:31:11,169 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [258 Valid, 1320 Invalid, 1713 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 1624 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-04-05 09:31:11,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 673 states. [2022-04-05 09:31:11,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 673 to 623. [2022-04-05 09:31:11,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 623 states, 493 states have (on average 1.2474645030425964) internal successors, (615), 507 states have internal predecessors, (615), 67 states have call successors, (67), 47 states have call predecessors, (67), 62 states have return successors, (84), 75 states have call predecessors, (84), 61 states have call successors, (84) [2022-04-05 09:31:11,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 623 states to 623 states and 766 transitions. [2022-04-05 09:31:11,226 INFO L78 Accepts]: Start accepts. Automaton has 623 states and 766 transitions. Word has length 71 [2022-04-05 09:31:11,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 09:31:11,226 INFO L478 AbstractCegarLoop]: Abstraction has 623 states and 766 transitions. [2022-04-05 09:31:11,226 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 09:31:11,226 INFO L276 IsEmpty]: Start isEmpty. Operand 623 states and 766 transitions. [2022-04-05 09:31:11,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-04-05 09:31:11,227 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 09:31:11,227 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 09:31:11,227 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2022-04-05 09:31:11,227 INFO L403 AbstractCegarLoop]: === Iteration 60 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 09:31:11,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 09:31:11,227 INFO L85 PathProgramCache]: Analyzing trace with hash -1256769401, now seen corresponding path program 1 times [2022-04-05 09:31:11,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 09:31:11,228 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125190824] [2022-04-05 09:31:11,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 09:31:11,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 09:31:11,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:11,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 09:31:11,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:11,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 09:31:11,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:11,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-05 09:31:11,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:11,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-05 09:31:11,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:11,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-04-05 09:31:11,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:11,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-04-05 09:31:11,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:11,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-05 09:31:11,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:11,453 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 09:31:11,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 09:31:11,453 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125190824] [2022-04-05 09:31:11,453 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2125190824] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 09:31:11,453 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 09:31:11,453 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-04-05 09:31:11,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106645048] [2022-04-05 09:31:11,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 09:31:11,454 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-04-05 09:31:11,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 09:31:11,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-04-05 09:31:11,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=256, Unknown=0, NotChecked=0, Total=306 [2022-04-05 09:31:11,454 INFO L87 Difference]: Start difference. First operand 623 states and 766 transitions. Second operand has 18 states, 18 states have (on average 3.0555555555555554) internal successors, (55), 8 states have internal predecessors, (55), 2 states have call successors, (9), 9 states have call predecessors, (9), 4 states have return successors, (7), 4 states have call predecessors, (7), 1 states have call successors, (7) [2022-04-05 09:31:12,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 09:31:12,650 INFO L93 Difference]: Finished difference Result 854 states and 1053 transitions. [2022-04-05 09:31:12,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-04-05 09:31:12,650 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.0555555555555554) internal successors, (55), 8 states have internal predecessors, (55), 2 states have call successors, (9), 9 states have call predecessors, (9), 4 states have return successors, (7), 4 states have call predecessors, (7), 1 states have call successors, (7) Word has length 71 [2022-04-05 09:31:12,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 09:31:12,651 INFO L225 Difference]: With dead ends: 854 [2022-04-05 09:31:12,651 INFO L226 Difference]: Without dead ends: 715 [2022-04-05 09:31:12,652 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=112, Invalid=700, Unknown=0, NotChecked=0, Total=812 [2022-04-05 09:31:12,652 INFO L913 BasicCegarLoop]: 373 mSDtfsCounter, 956 mSDsluCounter, 1530 mSDsCounter, 0 mSdLazyCounter, 3701 mSolverCounterSat, 344 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 969 SdHoareTripleChecker+Valid, 1903 SdHoareTripleChecker+Invalid, 4045 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 344 IncrementalHoareTripleChecker+Valid, 3701 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-04-05 09:31:12,652 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [969 Valid, 1903 Invalid, 4045 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [344 Valid, 3701 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-04-05 09:31:12,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 715 states. [2022-04-05 09:31:12,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 715 to 629. [2022-04-05 09:31:12,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 629 states, 499 states have (on average 1.2364729458917836) internal successors, (617), 513 states have internal predecessors, (617), 67 states have call successors, (67), 47 states have call predecessors, (67), 62 states have return successors, (84), 75 states have call predecessors, (84), 61 states have call successors, (84) [2022-04-05 09:31:12,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 629 states to 629 states and 768 transitions. [2022-04-05 09:31:12,710 INFO L78 Accepts]: Start accepts. Automaton has 629 states and 768 transitions. Word has length 71 [2022-04-05 09:31:12,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 09:31:12,710 INFO L478 AbstractCegarLoop]: Abstraction has 629 states and 768 transitions. [2022-04-05 09:31:12,710 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.0555555555555554) internal successors, (55), 8 states have internal predecessors, (55), 2 states have call successors, (9), 9 states have call predecessors, (9), 4 states have return successors, (7), 4 states have call predecessors, (7), 1 states have call successors, (7) [2022-04-05 09:31:12,711 INFO L276 IsEmpty]: Start isEmpty. Operand 629 states and 768 transitions. [2022-04-05 09:31:12,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-04-05 09:31:12,711 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 09:31:12,711 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 09:31:12,712 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2022-04-05 09:31:12,712 INFO L403 AbstractCegarLoop]: === Iteration 61 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 09:31:12,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 09:31:12,712 INFO L85 PathProgramCache]: Analyzing trace with hash 958622839, now seen corresponding path program 1 times [2022-04-05 09:31:12,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 09:31:12,712 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839482474] [2022-04-05 09:31:12,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 09:31:12,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 09:31:12,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:12,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 09:31:12,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:12,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 09:31:12,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:12,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-05 09:31:12,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:12,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-05 09:31:12,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:12,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-05 09:31:12,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:12,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-04-05 09:31:12,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:12,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-05 09:31:12,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:12,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-05 09:31:12,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:12,874 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 09:31:12,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 09:31:12,874 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839482474] [2022-04-05 09:31:12,874 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1839482474] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 09:31:12,874 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 09:31:12,874 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-04-05 09:31:12,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929423307] [2022-04-05 09:31:12,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 09:31:12,874 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-04-05 09:31:12,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 09:31:12,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-04-05 09:31:12,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2022-04-05 09:31:12,875 INFO L87 Difference]: Start difference. First operand 629 states and 768 transitions. Second operand has 13 states, 13 states have (on average 4.230769230769231) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-04-05 09:31:13,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 09:31:13,479 INFO L93 Difference]: Finished difference Result 717 states and 882 transitions. [2022-04-05 09:31:13,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-04-05 09:31:13,479 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 09:31:13,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 09:31:13,480 INFO L225 Difference]: With dead ends: 717 [2022-04-05 09:31:13,480 INFO L226 Difference]: Without dead ends: 667 [2022-04-05 09:31:13,481 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 09:31:13,481 INFO L913 BasicCegarLoop]: 393 mSDtfsCounter, 658 mSDsluCounter, 606 mSDsCounter, 0 mSdLazyCounter, 1093 mSolverCounterSat, 242 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 659 SdHoareTripleChecker+Valid, 999 SdHoareTripleChecker+Invalid, 1335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 242 IncrementalHoareTripleChecker+Valid, 1093 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-04-05 09:31:13,481 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [659 Valid, 999 Invalid, 1335 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [242 Valid, 1093 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-04-05 09:31:13,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 667 states. [2022-04-05 09:31:13,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 667 to 617. [2022-04-05 09:31:13,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 617 states, 488 states have (on average 1.2315573770491803) internal successors, (601), 502 states have internal predecessors, (601), 66 states have call successors, (66), 47 states have call predecessors, (66), 62 states have return successors, (83), 74 states have call predecessors, (83), 60 states have call successors, (83) [2022-04-05 09:31:13,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 617 states to 617 states and 750 transitions. [2022-04-05 09:31:13,539 INFO L78 Accepts]: Start accepts. Automaton has 617 states and 750 transitions. Word has length 73 [2022-04-05 09:31:13,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 09:31:13,540 INFO L478 AbstractCegarLoop]: Abstraction has 617 states and 750 transitions. [2022-04-05 09:31:13,540 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 09:31:13,540 INFO L276 IsEmpty]: Start isEmpty. Operand 617 states and 750 transitions. [2022-04-05 09:31:13,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-04-05 09:31:13,541 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 09:31:13,547 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 09:31:13,548 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2022-04-05 09:31:13,548 INFO L403 AbstractCegarLoop]: === Iteration 62 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 09:31:13,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 09:31:13,548 INFO L85 PathProgramCache]: Analyzing trace with hash 1514534938, now seen corresponding path program 1 times [2022-04-05 09:31:13,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 09:31:13,548 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157464075] [2022-04-05 09:31:13,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 09:31:13,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 09:31:13,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:13,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 09:31:13,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:13,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 09:31:13,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:13,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-05 09:31:13,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:13,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-05 09:31:13,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:13,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-04-05 09:31:13,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:13,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-04-05 09:31:13,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:13,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-05 09:31:13,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:13,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-04-05 09:31:13,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:13,808 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 09:31:13,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 09:31:13,808 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157464075] [2022-04-05 09:31:13,808 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [157464075] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 09:31:13,808 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 09:31:13,808 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-04-05 09:31:13,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168253977] [2022-04-05 09:31:13,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 09:31:13,809 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-04-05 09:31:13,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 09:31:13,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-04-05 09:31:13,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=276, Unknown=0, NotChecked=0, Total=342 [2022-04-05 09:31:13,809 INFO L87 Difference]: Start difference. First operand 617 states and 750 transitions. Second operand has 19 states, 19 states have (on average 2.8947368421052633) internal successors, (55), 10 states have internal predecessors, (55), 5 states have call successors, (10), 10 states have call predecessors, (10), 4 states have return successors, (8), 6 states have call predecessors, (8), 4 states have call successors, (8) [2022-04-05 09:31:17,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 09:31:17,296 INFO L93 Difference]: Finished difference Result 1504 states and 1836 transitions. [2022-04-05 09:31:17,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-04-05 09:31:17,296 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 09:31:17,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 09:31:17,299 INFO L225 Difference]: With dead ends: 1504 [2022-04-05 09:31:17,299 INFO L226 Difference]: Without dead ends: 1357 [2022-04-05 09:31:17,300 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 749 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=676, Invalid=2630, Unknown=0, NotChecked=0, Total=3306 [2022-04-05 09:31:17,313 INFO L913 BasicCegarLoop]: 412 mSDtfsCounter, 3376 mSDsluCounter, 1090 mSDsCounter, 0 mSdLazyCounter, 4421 mSolverCounterSat, 1144 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3381 SdHoareTripleChecker+Valid, 1502 SdHoareTripleChecker+Invalid, 5565 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1144 IncrementalHoareTripleChecker+Valid, 4421 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-04-05 09:31:17,314 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [3381 Valid, 1502 Invalid, 5565 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1144 Valid, 4421 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-04-05 09:31:17,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1357 states. [2022-04-05 09:31:17,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1357 to 978. [2022-04-05 09:31:17,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 978 states, 777 states have (on average 1.250965250965251) internal successors, (972), 800 states have internal predecessors, (972), 101 states have call successors, (101), 77 states have call predecessors, (101), 99 states have return successors, (132), 107 states have call predecessors, (132), 95 states have call successors, (132) [2022-04-05 09:31:17,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 978 states to 978 states and 1205 transitions. [2022-04-05 09:31:17,432 INFO L78 Accepts]: Start accepts. Automaton has 978 states and 1205 transitions. Word has length 73 [2022-04-05 09:31:17,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 09:31:17,432 INFO L478 AbstractCegarLoop]: Abstraction has 978 states and 1205 transitions. [2022-04-05 09:31:17,432 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 09:31:17,432 INFO L276 IsEmpty]: Start isEmpty. Operand 978 states and 1205 transitions. [2022-04-05 09:31:17,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-04-05 09:31:17,433 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 09:31:17,434 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 09:31:17,434 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2022-04-05 09:31:17,434 INFO L403 AbstractCegarLoop]: === Iteration 63 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 09:31:17,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 09:31:17,434 INFO L85 PathProgramCache]: Analyzing trace with hash 100059264, now seen corresponding path program 1 times [2022-04-05 09:31:17,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 09:31:17,434 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612402096] [2022-04-05 09:31:17,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 09:31:17,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 09:31:17,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:17,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 09:31:17,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:17,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 09:31:17,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:17,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-05 09:31:17,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:17,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-05 09:31:17,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:17,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-05 09:31:17,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:17,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-04-05 09:31:17,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:17,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-04-05 09:31:17,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:17,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-05 09:31:17,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:17,695 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 09:31:17,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 09:31:17,695 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612402096] [2022-04-05 09:31:17,695 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1612402096] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 09:31:17,695 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 09:31:17,695 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-04-05 09:31:17,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800487433] [2022-04-05 09:31:17,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 09:31:17,696 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-04-05 09:31:17,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 09:31:17,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-04-05 09:31:17,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=327, Unknown=0, NotChecked=0, Total=380 [2022-04-05 09:31:17,696 INFO L87 Difference]: Start difference. First operand 978 states and 1205 transitions. Second operand has 20 states, 20 states have (on average 3.05) internal successors, (61), 9 states have internal predecessors, (61), 2 states have call successors, (10), 9 states have call predecessors, (10), 5 states have return successors, (8), 5 states have call predecessors, (8), 1 states have call successors, (8) [2022-04-05 09:31:18,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 09:31:18,926 INFO L93 Difference]: Finished difference Result 1080 states and 1346 transitions. [2022-04-05 09:31:18,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-04-05 09:31:18,927 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 09:31:18,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 09:31:18,929 INFO L225 Difference]: With dead ends: 1080 [2022-04-05 09:31:18,929 INFO L226 Difference]: Without dead ends: 1038 [2022-04-05 09:31:18,929 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 09:31:18,932 INFO L913 BasicCegarLoop]: 393 mSDtfsCounter, 383 mSDsluCounter, 2031 mSDsCounter, 0 mSdLazyCounter, 3882 mSolverCounterSat, 153 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 386 SdHoareTripleChecker+Valid, 2424 SdHoareTripleChecker+Invalid, 4035 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 153 IncrementalHoareTripleChecker+Valid, 3882 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-04-05 09:31:18,932 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [386 Valid, 2424 Invalid, 4035 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [153 Valid, 3882 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-04-05 09:31:18,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1038 states. [2022-04-05 09:31:19,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1038 to 968. [2022-04-05 09:31:19,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 968 states, 771 states have (on average 1.2503242542153048) internal successors, (964), 794 states have internal predecessors, (964), 97 states have call successors, (97), 77 states have call predecessors, (97), 99 states have return successors, (128), 103 states have call predecessors, (128), 91 states have call successors, (128) [2022-04-05 09:31:19,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 968 states to 968 states and 1189 transitions. [2022-04-05 09:31:19,041 INFO L78 Accepts]: Start accepts. Automaton has 968 states and 1189 transitions. Word has length 79 [2022-04-05 09:31:19,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 09:31:19,041 INFO L478 AbstractCegarLoop]: Abstraction has 968 states and 1189 transitions. [2022-04-05 09:31:19,041 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 09:31:19,041 INFO L276 IsEmpty]: Start isEmpty. Operand 968 states and 1189 transitions. [2022-04-05 09:31:19,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-04-05 09:31:19,043 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 09:31:19,043 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 09:31:19,043 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2022-04-05 09:31:19,043 INFO L403 AbstractCegarLoop]: === Iteration 64 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 09:31:19,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 09:31:19,043 INFO L85 PathProgramCache]: Analyzing trace with hash 226042889, now seen corresponding path program 1 times [2022-04-05 09:31:19,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 09:31:19,044 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124093325] [2022-04-05 09:31:19,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 09:31:19,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 09:31:19,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:19,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 09:31:19,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:19,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 09:31:19,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:19,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-05 09:31:19,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:19,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-05 09:31:19,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:19,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-05 09:31:19,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:19,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-04-05 09:31:19,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:19,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-05 09:31:19,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:19,299 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 09:31:19,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 09:31:19,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124093325] [2022-04-05 09:31:19,299 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [124093325] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 09:31:19,299 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 09:31:19,299 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-04-05 09:31:19,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372652292] [2022-04-05 09:31:19,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 09:31:19,299 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-04-05 09:31:19,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 09:31:19,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-04-05 09:31:19,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=296, Unknown=0, NotChecked=0, Total=342 [2022-04-05 09:31:19,300 INFO L87 Difference]: Start difference. First operand 968 states and 1189 transitions. Second operand has 19 states, 19 states have (on average 2.9473684210526314) internal successors, (56), 9 states have internal predecessors, (56), 2 states have call successors, (9), 8 states have call predecessors, (9), 5 states have return successors, (7), 5 states have call predecessors, (7), 1 states have call successors, (7) [2022-04-05 09:31:20,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 09:31:20,903 INFO L93 Difference]: Finished difference Result 1040 states and 1294 transitions. [2022-04-05 09:31:20,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-04-05 09:31:20,903 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 09:31:20,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 09:31:20,905 INFO L225 Difference]: With dead ends: 1040 [2022-04-05 09:31:20,905 INFO L226 Difference]: Without dead ends: 955 [2022-04-05 09:31:20,905 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 09:31:20,905 INFO L913 BasicCegarLoop]: 373 mSDtfsCounter, 184 mSDsluCounter, 1892 mSDsCounter, 0 mSdLazyCounter, 4171 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 186 SdHoareTripleChecker+Valid, 2265 SdHoareTripleChecker+Invalid, 4242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 4171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-04-05 09:31:20,906 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [186 Valid, 2265 Invalid, 4242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 4171 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-04-05 09:31:20,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 955 states. [2022-04-05 09:31:20,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 955 to 876. [2022-04-05 09:31:20,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 876 states, 695 states have (on average 1.260431654676259) internal successors, (876), 715 states have internal predecessors, (876), 90 states have call successors, (90), 71 states have call predecessors, (90), 90 states have return successors, (118), 95 states have call predecessors, (118), 85 states have call successors, (118) [2022-04-05 09:31:20,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 876 states to 876 states and 1084 transitions. [2022-04-05 09:31:20,993 INFO L78 Accepts]: Start accepts. Automaton has 876 states and 1084 transitions. Word has length 72 [2022-04-05 09:31:20,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 09:31:20,993 INFO L478 AbstractCegarLoop]: Abstraction has 876 states and 1084 transitions. [2022-04-05 09:31:20,993 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 09:31:20,993 INFO L276 IsEmpty]: Start isEmpty. Operand 876 states and 1084 transitions. [2022-04-05 09:31:20,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-04-05 09:31:20,994 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 09:31:20,995 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 09:31:20,995 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2022-04-05 09:31:20,995 INFO L403 AbstractCegarLoop]: === Iteration 65 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 09:31:20,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 09:31:20,995 INFO L85 PathProgramCache]: Analyzing trace with hash -293312583, now seen corresponding path program 1 times [2022-04-05 09:31:20,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 09:31:20,995 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443326731] [2022-04-05 09:31:20,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 09:31:20,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 09:31:21,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:21,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 09:31:21,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:21,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 09:31:21,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:21,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-05 09:31:21,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:21,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-05 09:31:21,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:21,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-04-05 09:31:21,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:21,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-04-05 09:31:21,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:21,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-05 09:31:21,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:21,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-04-05 09:31:21,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:21,133 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 09:31:21,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 09:31:21,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443326731] [2022-04-05 09:31:21,133 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1443326731] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 09:31:21,133 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 09:31:21,133 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-04-05 09:31:21,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638805166] [2022-04-05 09:31:21,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 09:31:21,134 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-04-05 09:31:21,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 09:31:21,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-04-05 09:31:21,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2022-04-05 09:31:21,134 INFO L87 Difference]: Start difference. First operand 876 states and 1084 transitions. Second operand has 14 states, 14 states have (on average 3.9285714285714284) internal successors, (55), 6 states have internal predecessors, (55), 5 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2022-04-05 09:31:22,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 09:31:22,632 INFO L93 Difference]: Finished difference Result 1263 states and 1556 transitions. [2022-04-05 09:31:22,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-04-05 09:31:22,633 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 09:31:22,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 09:31:22,635 INFO L225 Difference]: With dead ends: 1263 [2022-04-05 09:31:22,635 INFO L226 Difference]: Without dead ends: 1133 [2022-04-05 09:31:22,635 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=199, Invalid=613, Unknown=0, NotChecked=0, Total=812 [2022-04-05 09:31:22,636 INFO L913 BasicCegarLoop]: 635 mSDtfsCounter, 1953 mSDsluCounter, 951 mSDsCounter, 0 mSdLazyCounter, 2391 mSolverCounterSat, 604 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1957 SdHoareTripleChecker+Valid, 1586 SdHoareTripleChecker+Invalid, 2995 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 604 IncrementalHoareTripleChecker+Valid, 2391 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-04-05 09:31:22,636 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1957 Valid, 1586 Invalid, 2995 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [604 Valid, 2391 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-04-05 09:31:22,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1133 states. [2022-04-05 09:31:22,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1133 to 978. [2022-04-05 09:31:22,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 978 states, 776 states have (on average 1.2487113402061856) internal successors, (969), 791 states have internal predecessors, (969), 105 states have call successors, (105), 76 states have call predecessors, (105), 96 states have return successors, (135), 114 states have call predecessors, (135), 100 states have call successors, (135) [2022-04-05 09:31:22,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 978 states to 978 states and 1209 transitions. [2022-04-05 09:31:22,745 INFO L78 Accepts]: Start accepts. Automaton has 978 states and 1209 transitions. Word has length 73 [2022-04-05 09:31:22,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 09:31:22,745 INFO L478 AbstractCegarLoop]: Abstraction has 978 states and 1209 transitions. [2022-04-05 09:31:22,746 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 09:31:22,746 INFO L276 IsEmpty]: Start isEmpty. Operand 978 states and 1209 transitions. [2022-04-05 09:31:22,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-04-05 09:31:22,747 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 09:31:22,747 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 09:31:22,747 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2022-04-05 09:31:22,747 INFO L403 AbstractCegarLoop]: === Iteration 66 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 09:31:22,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 09:31:22,747 INFO L85 PathProgramCache]: Analyzing trace with hash -7999414, now seen corresponding path program 1 times [2022-04-05 09:31:22,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 09:31:22,748 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805897031] [2022-04-05 09:31:22,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 09:31:22,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 09:31:22,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:22,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 09:31:22,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:22,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 09:31:22,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:22,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-05 09:31:22,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:22,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-05 09:31:22,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:22,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-05 09:31:22,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:22,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-05 09:31:22,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:22,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-04-05 09:31:22,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:22,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-04-05 09:31:22,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:22,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-05 09:31:22,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:31:22,913 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 09:31:22,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 09:31:22,913 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805897031] [2022-04-05 09:31:22,913 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [805897031] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 09:31:22,913 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 09:31:22,913 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-04-05 09:31:22,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297355380] [2022-04-05 09:31:22,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 09:31:22,914 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-04-05 09:31:22,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 09:31:22,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-04-05 09:31:22,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2022-04-05 09:31:22,914 INFO L87 Difference]: Start difference. First operand 978 states and 1209 transitions. Second operand has 15 states, 15 states have (on average 3.6666666666666665) internal successors, (55), 5 states have internal predecessors, (55), 2 states have call successors, (11), 10 states have call predecessors, (11), 3 states have return successors, (9), 4 states have call predecessors, (9), 2 states have call successors, (9) [2022-04-05 09:31:23,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 09:31:23,927 INFO L93 Difference]: Finished difference Result 1123 states and 1401 transitions. [2022-04-05 09:31:23,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-04-05 09:31:23,928 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 09:31:23,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 09:31:23,929 INFO L225 Difference]: With dead ends: 1123 [2022-04-05 09:31:23,929 INFO L226 Difference]: Without dead ends: 1038 [2022-04-05 09:31:23,930 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 09:31:23,930 INFO L913 BasicCegarLoop]: 355 mSDtfsCounter, 349 mSDsluCounter, 911 mSDsCounter, 0 mSdLazyCounter, 1686 mSolverCounterSat, 139 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 350 SdHoareTripleChecker+Valid, 1266 SdHoareTripleChecker+Invalid, 1825 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 139 IncrementalHoareTripleChecker+Valid, 1686 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-04-05 09:31:23,930 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [350 Valid, 1266 Invalid, 1825 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [139 Valid, 1686 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-04-05 09:31:23,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1038 states. [2022-04-05 09:31:24,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1038 to 960. [2022-04-05 09:31:24,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 960 states, 762 states have (on average 1.2480314960629921) internal successors, (951), 777 states have internal predecessors, (951), 101 states have call successors, (101), 76 states have call predecessors, (101), 96 states have return successors, (129), 110 states have call predecessors, (129), 96 states have call successors, (129) [2022-04-05 09:31:24,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 960 states to 960 states and 1181 transitions. [2022-04-05 09:31:24,034 INFO L78 Accepts]: Start accepts. Automaton has 960 states and 1181 transitions. Word has length 75 [2022-04-05 09:31:24,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 09:31:24,034 INFO L478 AbstractCegarLoop]: Abstraction has 960 states and 1181 transitions. [2022-04-05 09:31:24,034 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 09:31:24,035 INFO L276 IsEmpty]: Start isEmpty. Operand 960 states and 1181 transitions. [2022-04-05 09:31:24,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-04-05 09:31:24,036 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 09:31:24,036 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 09:31:24,036 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2022-04-05 09:31:24,036 INFO L403 AbstractCegarLoop]: === Iteration 67 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 09:31:24,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 09:31:24,036 INFO L85 PathProgramCache]: Analyzing trace with hash -1981078137, now seen corresponding path program 1 times [2022-04-05 09:31:24,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 09:31:24,036 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463270343] [2022-04-05 09:31:24,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 09:31:24,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 09:31:24,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-05 09:31:24,046 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-04-05 09:31:24,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-05 09:31:24,101 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-04-05 09:31:24,102 INFO L618 BasicCegarLoop]: Counterexample is feasible [2022-04-05 09:31:24,102 INFO L788 garLoopResultBuilder]: Registering result UNSAFE for location errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-04-05 09:31:24,103 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2022-04-05 09:31:24,105 INFO L719 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 09:31:24,107 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-04-05 09:31:24,185 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.04 09:31:24 BasicIcfg [2022-04-05 09:31:24,185 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-04-05 09:31:24,185 INFO L158 Benchmark]: Toolchain (without parser) took 117988.52ms. Allocated memory was 177.2MB in the beginning and 662.7MB in the end (delta: 485.5MB). Free memory was 153.5MB in the beginning and 323.4MB in the end (delta: -169.9MB). Peak memory consumption was 315.4MB. Max. memory is 8.0GB. [2022-04-05 09:31:24,185 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 177.2MB. Free memory is still 141.2MB. There was no memory consumed. Max. memory is 8.0GB. [2022-04-05 09:31:24,185 INFO L158 Benchmark]: CACSL2BoogieTranslator took 398.71ms. Allocated memory is still 177.2MB. Free memory was 153.5MB in the beginning and 132.5MB in the end (delta: 21.0MB). Peak memory consumption was 21.4MB. Max. memory is 8.0GB. [2022-04-05 09:31:24,185 INFO L158 Benchmark]: Boogie Preprocessor took 122.89ms. Allocated memory is still 177.2MB. Free memory was 132.5MB in the beginning and 127.6MB in the end (delta: 4.9MB). Peak memory consumption was 5.2MB. Max. memory is 8.0GB. [2022-04-05 09:31:24,186 INFO L158 Benchmark]: RCFGBuilder took 1019.68ms. Allocated memory was 177.2MB in the beginning and 212.9MB in the end (delta: 35.7MB). Free memory was 127.3MB in the beginning and 144.2MB in the end (delta: -16.9MB). Peak memory consumption was 31.7MB. Max. memory is 8.0GB. [2022-04-05 09:31:24,186 INFO L158 Benchmark]: IcfgTransformer took 57.81ms. Allocated memory is still 212.9MB. Free memory was 144.2MB in the beginning and 136.4MB in the end (delta: 7.8MB). Peak memory consumption was 7.3MB. Max. memory is 8.0GB. [2022-04-05 09:31:24,186 INFO L158 Benchmark]: TraceAbstraction took 116379.09ms. Allocated memory was 212.9MB in the beginning and 662.7MB in the end (delta: 449.8MB). Free memory was 135.9MB in the beginning and 323.4MB in the end (delta: -187.5MB). Peak memory consumption was 262.3MB. Max. memory is 8.0GB. [2022-04-05 09:31:24,189 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 177.2MB. Free memory is still 141.2MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 398.71ms. Allocated memory is still 177.2MB. Free memory was 153.5MB in the beginning and 132.5MB in the end (delta: 21.0MB). Peak memory consumption was 21.4MB. Max. memory is 8.0GB. * Boogie Preprocessor took 122.89ms. Allocated memory is still 177.2MB. Free memory was 132.5MB in the beginning and 127.6MB in the end (delta: 4.9MB). Peak memory consumption was 5.2MB. Max. memory is 8.0GB. * RCFGBuilder took 1019.68ms. Allocated memory was 177.2MB in the beginning and 212.9MB in the end (delta: 35.7MB). Free memory was 127.3MB in the beginning and 144.2MB in the end (delta: -16.9MB). Peak memory consumption was 31.7MB. Max. memory is 8.0GB. * IcfgTransformer took 57.81ms. Allocated memory is still 212.9MB. Free memory was 144.2MB in the beginning and 136.4MB in the end (delta: 7.8MB). Peak memory consumption was 7.3MB. Max. memory is 8.0GB. * TraceAbstraction took 116379.09ms. Allocated memory was 212.9MB in the beginning and 662.7MB in the end (delta: 449.8MB). Free memory was 135.9MB in the beginning and 323.4MB in the end (delta: -187.5MB). Peak memory consumption was 262.3MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 59]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L32] int s ; [L33] int UNLOADED ; [L34] int NP ; [L35] int DC ; [L36] int SKIP1 ; [L37] int SKIP2 ; [L38] int MPR1 ; [L39] int MPR3 ; [L40] int IPC ; [L41] int pended ; [L42] int compFptr ; [L43] int compRegistered ; [L44] int lowerDriverReturn ; [L45] int setEventCalled ; [L46] int customIrp ; [L47] int routine ; [L48] int myStatus ; [L49] int pirp ; [L50] int Executive ; [L51] int Suspended ; [L52] int KernelMode ; [L53] int DeviceUsageTypePaging ; VAL [\old(compFptr)=147535, \old(compRegistered)=147529, \old(customIrp)=147518, \old(DC)=147533, \old(DeviceUsageTypePaging)=147522, \old(Executive)=147515, \old(IPC)=147524, \old(KernelMode)=147520, \old(lowerDriverReturn)=147513, \old(MPR1)=147526, \old(MPR3)=147536, \old(myStatus)=147532, \old(NP)=147516, \old(pended)=147519, \old(pirp)=147527, \old(routine)=147514, \old(s)=147521, \old(setEventCalled)=147517, \old(SKIP1)=147523, \old(SKIP2)=147530, \old(Suspended)=147528, \old(UNLOADED)=147534, compFptr=0, compRegistered=0, customIrp=0, DC=0, DeviceUsageTypePaging=0, Executive=0, IPC=0, KernelMode=0, lowerDriverReturn=0, MPR1=0, MPR3=0, myStatus=0, NP=0, pended=0, pirp=0, routine=0, s=0, setEventCalled=0, SKIP1=0, SKIP2=0, Suspended=0, UNLOADED=0] [L1718] int pirp__IoStatus__Status ; [L1719] int d = __VERIFIER_nondet_int() ; [L1720] int status = __VERIFIER_nondet_int() ; [L1721] int irp = __VERIFIER_nondet_int() ; [L1722] int we_should_unload = __VERIFIER_nondet_int() ; [L1723] int irp_choice = __VERIFIER_nondet_int() ; [L1724] int devobj = __VERIFIER_nondet_int() ; [L1725] int __cil_tmp9 ; [L1730] s = 0 [L1731] UNLOADED = 0 [L1732] NP = 0 [L1733] DC = 0 [L1734] SKIP1 = 0 [L1735] SKIP2 = 0 [L1736] MPR1 = 0 [L1737] MPR3 = 0 [L1738] IPC = 0 [L1739] pended = 0 [L1740] compFptr = 0 [L1741] compRegistered = 0 [L1742] lowerDriverReturn = 0 [L1743] setEventCalled = 0 [L1744] customIrp = 0 [L1745] routine = 0 [L1746] myStatus = 0 [L1747] pirp = 0 [L1748] Executive = 0 [L1749] Suspended = 5 [L1750] KernelMode = 0 [L1751] DeviceUsageTypePaging = 1 [L1754] pirp = irp VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=0, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=0, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=0, customIrp=0, d=0, DC=0, DeviceUsageTypePaging=1, devobj=0, Executive=0, IPC=0, irp=-2, irp_choice=0, KernelMode=0, lowerDriverReturn=0, MPR1=0, MPR3=0, myStatus=0, NP=0, pended=0, pirp=-2, routine=0, s=0, setEventCalled=0, SKIP1=0, SKIP2=0, status=0, Suspended=5, UNLOADED=0, we_should_unload=0] [L1755] CALL _BLAST_init() VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=0, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=0, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=0, customIrp=0, DC=0, DeviceUsageTypePaging=1, Executive=0, IPC=0, KernelMode=0, lowerDriverReturn=0, MPR1=0, MPR3=0, myStatus=0, NP=0, pended=0, pirp=-2, routine=0, s=0, setEventCalled=0, SKIP1=0, SKIP2=0, Suspended=5, UNLOADED=0] [L67] UNLOADED = 0 [L68] NP = 1 [L69] DC = 2 [L70] SKIP1 = 3 [L71] SKIP2 = 4 [L72] MPR1 = 5 [L73] MPR3 = 6 [L74] IPC = 7 [L75] s = UNLOADED [L76] pended = 0 [L77] compFptr = 0 [L78] compRegistered = 0 [L79] lowerDriverReturn = 0 [L80] setEventCalled = 0 [L81] customIrp = 0 VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=0, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=0, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=0, customIrp=0, DC=2, DeviceUsageTypePaging=1, Executive=0, IPC=7, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=0, NP=1, pended=0, pirp=-2, routine=0, s=0, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1755] RET _BLAST_init() VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=0, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=0, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=0, customIrp=0, d=0, DC=2, DeviceUsageTypePaging=1, devobj=0, Executive=0, IPC=7, irp=-2, irp_choice=0, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=0, NP=1, pended=0, pirp=-2, routine=0, s=0, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, Suspended=5, UNLOADED=0, we_should_unload=0] [L1757] COND TRUE status >= 0 [L1758] s = NP [L1759] customIrp = 0 [L1760] setEventCalled = customIrp [L1761] lowerDriverReturn = setEventCalled [L1762] compRegistered = lowerDriverReturn [L1763] compFptr = compRegistered [L1764] pended = compFptr [L1765] pirp__IoStatus__Status = 0 [L1766] myStatus = 0 VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=0, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=0, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=0, customIrp=0, d=0, DC=2, DeviceUsageTypePaging=1, devobj=0, Executive=0, IPC=7, irp=-2, irp_choice=0, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=0, NP=1, pended=0, pirp=-2, pirp__IoStatus__Status=0, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, Suspended=5, UNLOADED=0, we_should_unload=0] [L1767] COND TRUE irp_choice == 0 [L1768] pirp__IoStatus__Status = -1073741637 [L1769] myStatus = -1073741637 VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=0, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=0, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=0, customIrp=0, d=0, DC=2, DeviceUsageTypePaging=1, devobj=0, Executive=0, IPC=7, irp=-2, irp_choice=0, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=0, pirp=-2, pirp__IoStatus__Status=-1073741637, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, Suspended=5, UNLOADED=0, we_should_unload=0] [L1772] CALL stub_driver_init() VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=0, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=0, customIrp=0, DC=2, DeviceUsageTypePaging=1, Executive=0, IPC=7, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=0, pirp=-2, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1707] s = NP [L1708] customIrp = 0 [L1709] setEventCalled = customIrp [L1710] lowerDriverReturn = setEventCalled [L1711] compRegistered = lowerDriverReturn [L1712] compFptr = compRegistered [L1713] pended = compFptr VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=0, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=0, customIrp=0, DC=2, DeviceUsageTypePaging=1, Executive=0, IPC=7, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=0, pirp=-2, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1772] RET stub_driver_init() VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=0, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=0, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=0, customIrp=0, d=0, DC=2, DeviceUsageTypePaging=1, devobj=0, Executive=0, IPC=7, irp=-2, irp_choice=0, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=0, pirp=-2, pirp__IoStatus__Status=-1073741637, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, Suspended=5, UNLOADED=0, we_should_unload=0] [L1775] COND FALSE !(status < 0) [L1779] int tmp_ndt_1; [L1780] tmp_ndt_1 = __VERIFIER_nondet_int() [L1781] COND TRUE tmp_ndt_1 == 2 VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=0, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=0, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=0, customIrp=0, d=0, DC=2, DeviceUsageTypePaging=1, devobj=0, Executive=0, IPC=7, irp=-2, irp_choice=0, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=0, pirp=-2, pirp__IoStatus__Status=-1073741637, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, Suspended=5, tmp_ndt_1=2, UNLOADED=0, we_should_unload=0] [L1798] CALL, EXPR CdAudioDeviceControl(devobj, pirp) VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=-2, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=-1073741637, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=0, customIrp=0, DC=2, DeviceUsageTypePaging=1, Executive=0, IPC=7, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=0, pirp=-2, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L313] int deviceExtension__Active = __VERIFIER_nondet_int() ; [L314] int status ; VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=-2, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=-1073741637, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=0, customIrp=0, DC=2, deviceExtension__Active=7, DeviceObject=0, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=-2, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=0, pirp=-2, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L317] COND FALSE !(deviceExtension__Active == 2) VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=-2, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=-1073741637, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=0, customIrp=0, DC=2, deviceExtension__Active=7, DeviceObject=0, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=-2, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=0, pirp=-2, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L320] COND FALSE !(deviceExtension__Active == 3) VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=-2, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=-1073741637, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=0, customIrp=0, DC=2, deviceExtension__Active=7, DeviceObject=0, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=-2, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=0, pirp=-2, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L323] COND FALSE !(deviceExtension__Active == 1) VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=-2, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=-1073741637, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=0, customIrp=0, DC=2, deviceExtension__Active=7, DeviceObject=0, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=-2, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=0, pirp=-2, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L326] COND TRUE deviceExtension__Active == 7 VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=-2, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=-1073741637, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=0, customIrp=0, DC=2, deviceExtension__Active=7, DeviceObject=0, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=-2, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=0, pirp=-2, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L348] CALL, EXPR CdAudioHPCdrDeviceControl(DeviceObject, Irp) VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=-2, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=-1073741637, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=0, customIrp=0, DC=2, DeviceUsageTypePaging=1, Executive=0, IPC=7, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=0, pirp=-2, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1591] int currentIrpStack__Parameters__DeviceIoControl__IoControlCode = __VERIFIER_nondet_int() ; [L1592] int deviceExtension__TargetDeviceObject = __VERIFIER_nondet_int() ; [L1593] int irpSp__Control ; [L1594] int tmp ; [L1595] int tmp___0 ; [L1596] int __cil_tmp8 ; [L1597] int __cil_tmp9 ; [L1598] int __cil_tmp10 ; [L1599] int __cil_tmp11 ; [L1600] int __cil_tmp12 ; [L1604] __cil_tmp8 = 56 [L1605] __cil_tmp9 = 16384 [L1606] __cil_tmp10 = 131072 [L1607] __cil_tmp11 = 147456 [L1608] __cil_tmp12 = 147512 VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=-2, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=-1073741637, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, __cil_tmp10=131072, __cil_tmp11=147456, __cil_tmp12=147512, __cil_tmp8=56, __cil_tmp9=16384, compFptr=0, compRegistered=0, currentIrpStack__Parameters__DeviceIoControl__IoControlCode=147512, customIrp=0, DC=2, deviceExtension__TargetDeviceObject=-3, DeviceObject=0, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=-2, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=0, pirp=-2, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1609] COND TRUE currentIrpStack__Parameters__DeviceIoControl__IoControlCode == __cil_tmp12 VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=-2, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=-1073741637, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, __cil_tmp10=131072, __cil_tmp11=147456, __cil_tmp12=147512, __cil_tmp8=56, __cil_tmp9=16384, compFptr=0, compRegistered=0, currentIrpStack__Parameters__DeviceIoControl__IoControlCode=147512, customIrp=0, DC=2, deviceExtension__TargetDeviceObject=-3, DeviceObject=0, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=-2, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=0, pirp=-2, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1610] COND FALSE !(s != NP) VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=-2, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=-1073741637, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, __cil_tmp10=131072, __cil_tmp11=147456, __cil_tmp12=147512, __cil_tmp8=56, __cil_tmp9=16384, compFptr=0, compRegistered=0, currentIrpStack__Parameters__DeviceIoControl__IoControlCode=147512, customIrp=0, DC=2, deviceExtension__TargetDeviceObject=-3, DeviceObject=0, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=-2, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=0, pirp=-2, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1615] COND FALSE !(compRegistered != 0) [L1620] compRegistered = 1 [L1621] routine = 0 VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=-2, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=-1073741637, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, __cil_tmp10=131072, __cil_tmp11=147456, __cil_tmp12=147512, __cil_tmp8=56, __cil_tmp9=16384, compFptr=0, compRegistered=1, currentIrpStack__Parameters__DeviceIoControl__IoControlCode=147512, customIrp=0, DC=2, deviceExtension__TargetDeviceObject=-3, DeviceObject=0, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=-2, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=0, pirp=-2, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1625] irpSp__Control = 224 VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=-2, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=-1073741637, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, __cil_tmp10=131072, __cil_tmp11=147456, __cil_tmp12=147512, __cil_tmp8=56, __cil_tmp9=16384, compFptr=0, compRegistered=1, currentIrpStack__Parameters__DeviceIoControl__IoControlCode=147512, customIrp=0, DC=2, deviceExtension__TargetDeviceObject=-3, DeviceObject=0, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=-2, irpSp__Control=224, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=0, pirp=-2, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1626] CALL, EXPR IofCallDriver(deviceExtension__TargetDeviceObject, Irp) VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=-3, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=-2, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=-1073741637, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=1, customIrp=0, DC=2, DeviceUsageTypePaging=1, Executive=0, IPC=7, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=0, pirp=-2, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1900] int Irp__PendingReturned = __VERIFIER_nondet_int() ; [L1901] int returnVal2 ; [L1902] int compRetStatus ; [L1903] int lcontext = __VERIFIER_nondet_int() ; [L1904] unsigned long __cil_tmp8 ; VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=-3, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=-2, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=-1073741637, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=1, customIrp=0, DC=2, DeviceObject=-3, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=-2, Irp__PendingReturned=0, KernelMode=0, lcontext=4, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=0, pirp=-2, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1907] COND TRUE \read(compRegistered) VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=-3, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=-2, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=-1073741637, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=1, customIrp=0, DC=2, DeviceObject=-3, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=-2, Irp__PendingReturned=0, KernelMode=0, lcontext=4, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=0, pirp=-2, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1908] COND TRUE routine == 0 VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=-3, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=-2, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=-1073741637, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=1, customIrp=0, DC=2, DeviceObject=-3, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=-2, Irp__PendingReturned=0, KernelMode=0, lcontext=4, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=0, pirp=-2, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1910] CALL, EXPR HPCdrCompletion(DeviceObject, Irp, lcontext) VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(Context)=4, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=-3, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=-2, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=-1073741637, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=1, customIrp=0, DC=2, DeviceUsageTypePaging=1, Executive=0, IPC=7, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=0, pirp=-2, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1569] int Irp__PendingReturned = __VERIFIER_nondet_int() ; [L1570] int Irp__AssociatedIrp__SystemBuffer = __VERIFIER_nondet_int() ; [L1573] COND TRUE \read(Irp__PendingReturned) VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(Context)=4, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=-3, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=-2, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=-1073741637, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=1, Context=4, customIrp=0, DC=2, DeviceObject=-3, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=-2, Irp__AssociatedIrp__SystemBuffer=0, Irp__PendingReturned=-4, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=0, pirp=-2, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1574] COND TRUE pended == 0 [L1575] pended = 1 VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(Context)=4, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=-3, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=-2, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=-1073741637, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=1, Context=4, customIrp=0, DC=2, DeviceObject=-3, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=-2, Irp__AssociatedIrp__SystemBuffer=0, Irp__PendingReturned=-4, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=1, pirp=-2, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1582] COND FALSE !(myStatus >= 0) VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(Context)=4, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=-3, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=-2, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=-1073741637, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=1, Context=4, customIrp=0, DC=2, DeviceObject=-3, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=-2, Irp__AssociatedIrp__SystemBuffer=0, Irp__PendingReturned=-4, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=1, pirp=-2, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1587] return (myStatus); VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(Context)=4, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=-3, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=-2, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=-1073741637, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, \result=-1073741637, compFptr=0, compRegistered=1, Context=4, customIrp=0, DC=2, DeviceObject=-3, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=-2, Irp__AssociatedIrp__SystemBuffer=0, Irp__PendingReturned=-4, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=1, pirp=-2, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1910] RET, EXPR HPCdrCompletion(DeviceObject, Irp, lcontext) VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=-3, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=-2, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=-1073741637, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=1, customIrp=0, DC=2, DeviceObject=-3, DeviceUsageTypePaging=1, Executive=0, HPCdrCompletion(DeviceObject, Irp, lcontext)=-1073741637, IPC=7, Irp=-2, Irp__PendingReturned=0, KernelMode=0, lcontext=4, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=1, pirp=-2, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1910] compRetStatus = HPCdrCompletion(DeviceObject, Irp, lcontext) [L1920] __cil_tmp8 = (unsigned long )compRetStatus VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=-3, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=-2, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=-1073741637, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, __cil_tmp8=18446744072635809979, compFptr=0, compRegistered=1, compRetStatus=-1073741637, customIrp=0, DC=2, DeviceObject=-3, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=-2, Irp__PendingReturned=0, KernelMode=0, lcontext=4, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=1, pirp=-2, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1921] COND FALSE !(__cil_tmp8 == -1073741802) VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=-3, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=-2, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=-1073741637, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, __cil_tmp8=18446744072635809979, compFptr=0, compRegistered=1, compRetStatus=-1073741637, customIrp=0, DC=2, DeviceObject=-3, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=-2, Irp__PendingReturned=0, KernelMode=0, lcontext=4, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=1, pirp=-2, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1928] COND FALSE !(\read(Irp__PendingReturned)) [L1931] int tmp_ndt_4; [L1932] tmp_ndt_4 = __VERIFIER_nondet_int() [L1933] COND TRUE tmp_ndt_4 == 0 VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=-3, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=-2, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=-1073741637, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, __cil_tmp8=18446744072635809979, compFptr=0, compRegistered=1, compRetStatus=-1073741637, customIrp=0, DC=2, DeviceObject=-3, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=-2, Irp__PendingReturned=0, KernelMode=0, lcontext=4, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=1, pirp=-2, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, tmp_ndt_4=0, UNLOADED=0] [L1944] returnVal2 = 0 VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=-3, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=-2, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=-1073741637, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, __cil_tmp8=18446744072635809979, compFptr=0, compRegistered=1, compRetStatus=-1073741637, customIrp=0, DC=2, DeviceObject=-3, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=-2, Irp__PendingReturned=0, KernelMode=0, lcontext=4, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=1, pirp=-2, returnVal2=0, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, tmp_ndt_4=0, UNLOADED=0] [L1958] COND TRUE s == NP [L1959] s = IPC [L1960] lowerDriverReturn = returnVal2 VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=-3, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=-2, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=-1073741637, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, __cil_tmp8=18446744072635809979, compFptr=0, compRegistered=1, compRetStatus=-1073741637, customIrp=0, DC=2, DeviceObject=-3, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=-2, Irp__PendingReturned=0, KernelMode=0, lcontext=4, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=1, pirp=-2, returnVal2=0, routine=0, s=7, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, tmp_ndt_4=0, UNLOADED=0] [L1981] return (returnVal2); VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=-3, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=-2, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=-1073741637, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, \result=0, __cil_tmp8=18446744072635809979, compFptr=0, compRegistered=1, compRetStatus=-1073741637, customIrp=0, DC=2, DeviceObject=-3, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=-2, Irp__PendingReturned=0, KernelMode=0, lcontext=4, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=1, pirp=-2, returnVal2=0, routine=0, s=7, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, tmp_ndt_4=0, UNLOADED=0] [L1626] RET, EXPR IofCallDriver(deviceExtension__TargetDeviceObject, Irp) VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=-2, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=-1073741637, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, __cil_tmp10=131072, __cil_tmp11=147456, __cil_tmp12=147512, __cil_tmp8=56, __cil_tmp9=16384, compFptr=0, compRegistered=1, currentIrpStack__Parameters__DeviceIoControl__IoControlCode=147512, customIrp=0, DC=2, deviceExtension__TargetDeviceObject=-3, DeviceObject=0, DeviceUsageTypePaging=1, Executive=0, IofCallDriver(deviceExtension__TargetDeviceObject, Irp)=0, IPC=7, Irp=-2, irpSp__Control=224, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=1, pirp=-2, routine=0, s=7, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1626] tmp = IofCallDriver(deviceExtension__TargetDeviceObject, Irp) [L1628] return (tmp); VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=-2, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=-1073741637, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, \result=0, __cil_tmp10=131072, __cil_tmp11=147456, __cil_tmp12=147512, __cil_tmp8=56, __cil_tmp9=16384, compFptr=0, compRegistered=1, currentIrpStack__Parameters__DeviceIoControl__IoControlCode=147512, customIrp=0, DC=2, deviceExtension__TargetDeviceObject=-3, DeviceObject=0, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=-2, irpSp__Control=224, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=1, pirp=-2, routine=0, s=7, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, tmp=0, UNLOADED=0] [L348] RET, EXPR CdAudioHPCdrDeviceControl(DeviceObject, Irp) VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=-2, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=-1073741637, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, CdAudioHPCdrDeviceControl(DeviceObject, Irp)=0, compFptr=0, compRegistered=1, customIrp=0, DC=2, deviceExtension__Active=7, DeviceObject=0, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=-2, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=1, pirp=-2, routine=0, s=7, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L348] status = CdAudioHPCdrDeviceControl(DeviceObject, Irp) [L363] return (status); VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=-2, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=-1073741637, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, \result=0, compFptr=0, compRegistered=1, customIrp=0, DC=2, deviceExtension__Active=7, DeviceObject=0, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=-2, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=1, pirp=-2, routine=0, s=7, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, Suspended=5, UNLOADED=0] [L1798] RET, EXPR CdAudioDeviceControl(devobj, pirp) VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=0, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=0, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, CdAudioDeviceControl(devobj, pirp)=0, compFptr=0, compRegistered=1, customIrp=0, d=0, DC=2, DeviceUsageTypePaging=1, devobj=0, Executive=0, IPC=7, irp=-2, irp_choice=0, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=1, pirp=-2, pirp__IoStatus__Status=-1073741637, routine=0, s=7, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, Suspended=5, tmp_ndt_1=2, UNLOADED=0, we_should_unload=0] [L1798] status = CdAudioDeviceControl(devobj, pirp) [L1819] COND FALSE !(\read(we_should_unload)) VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=0, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=0, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=1, customIrp=0, d=0, DC=2, DeviceUsageTypePaging=1, devobj=0, Executive=0, IPC=7, irp=-2, irp_choice=0, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=1, pirp=-2, pirp__IoStatus__Status=-1073741637, routine=0, s=7, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, Suspended=5, tmp_ndt_1=2, UNLOADED=0, we_should_unload=0] [L1825] COND TRUE pended == 1 VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=0, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=0, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=1, customIrp=0, d=0, DC=2, DeviceUsageTypePaging=1, devobj=0, Executive=0, IPC=7, irp=-2, irp_choice=0, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=1, pirp=-2, pirp__IoStatus__Status=-1073741637, routine=0, s=7, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, Suspended=5, tmp_ndt_1=2, UNLOADED=0, we_should_unload=0] [L1826] COND FALSE !(s == NP) VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=0, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=0, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=1, customIrp=0, d=0, DC=2, DeviceUsageTypePaging=1, devobj=0, Executive=0, IPC=7, irp=-2, irp_choice=0, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=1, pirp=-2, pirp__IoStatus__Status=-1073741637, routine=0, s=7, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, Suspended=5, tmp_ndt_1=2, UNLOADED=0, we_should_unload=0] [L1833] COND TRUE pended == 1 VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=0, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=0, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=1, customIrp=0, d=0, DC=2, DeviceUsageTypePaging=1, devobj=0, Executive=0, IPC=7, irp=-2, irp_choice=0, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=1, pirp=-2, pirp__IoStatus__Status=-1073741637, routine=0, s=7, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, Suspended=5, tmp_ndt_1=2, UNLOADED=0, we_should_unload=0] [L1834] COND FALSE !(s == MPR3) VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=0, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=0, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=1, customIrp=0, d=0, DC=2, DeviceUsageTypePaging=1, devobj=0, Executive=0, IPC=7, irp=-2, irp_choice=0, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=1, pirp=-2, pirp__IoStatus__Status=-1073741637, routine=0, s=7, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, Suspended=5, tmp_ndt_1=2, UNLOADED=0, we_should_unload=0] [L1841] COND TRUE s != UNLOADED VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=0, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=0, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=1, customIrp=0, d=0, DC=2, DeviceUsageTypePaging=1, devobj=0, Executive=0, IPC=7, irp=-2, irp_choice=0, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=1, pirp=-2, pirp__IoStatus__Status=-1073741637, routine=0, s=7, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, Suspended=5, tmp_ndt_1=2, UNLOADED=0, we_should_unload=0] [L1842] COND TRUE status != -1 VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=0, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=0, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=1, customIrp=0, d=0, DC=2, DeviceUsageTypePaging=1, devobj=0, Executive=0, IPC=7, irp=-2, irp_choice=0, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=1, pirp=-2, pirp__IoStatus__Status=-1073741637, routine=0, s=7, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, Suspended=5, tmp_ndt_1=2, UNLOADED=0, we_should_unload=0] [L1843] COND TRUE s != SKIP2 VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=0, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=0, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=1, customIrp=0, d=0, DC=2, DeviceUsageTypePaging=1, devobj=0, Executive=0, IPC=7, irp=-2, irp_choice=0, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=1, pirp=-2, pirp__IoStatus__Status=-1073741637, routine=0, s=7, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, Suspended=5, tmp_ndt_1=2, UNLOADED=0, we_should_unload=0] [L1844] COND FALSE !(s != IPC) VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=0, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=0, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=1, customIrp=0, d=0, DC=2, DeviceUsageTypePaging=1, devobj=0, Executive=0, IPC=7, irp=-2, irp_choice=0, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=1, pirp=-2, pirp__IoStatus__Status=-1073741637, routine=0, s=7, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, Suspended=5, tmp_ndt_1=2, UNLOADED=0, we_should_unload=0] [L1857] COND FALSE !(pended != 1) VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=0, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=0, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=1, customIrp=0, d=0, DC=2, DeviceUsageTypePaging=1, devobj=0, Executive=0, IPC=7, irp=-2, irp_choice=0, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=1, pirp=-2, pirp__IoStatus__Status=-1073741637, routine=0, s=7, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, Suspended=5, tmp_ndt_1=2, UNLOADED=0, we_should_unload=0] [L1869] COND TRUE status != 259 VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=0, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=0, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=1, customIrp=0, d=0, DC=2, DeviceUsageTypePaging=1, devobj=0, Executive=0, IPC=7, irp=-2, irp_choice=0, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=1, pirp=-2, pirp__IoStatus__Status=-1073741637, routine=0, s=7, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, Suspended=5, tmp_ndt_1=2, UNLOADED=0, we_should_unload=0] [L1871] CALL errorFn() VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=0, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=0, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=1, customIrp=0, DC=2, DeviceUsageTypePaging=1, Executive=0, IPC=7, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=1, pirp=-2, routine=0, s=7, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L59] reach_error() VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=0, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=0, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=1, customIrp=0, DC=2, DeviceUsageTypePaging=1, Executive=0, IPC=7, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=1, pirp=-2, routine=0, s=7, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 30 procedures, 517 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 116.2s, OverallIterations: 67, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 100.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 69203 SdHoareTripleChecker+Valid, 85.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 68784 mSDsluCounter, 116933 SdHoareTripleChecker+Invalid, 72.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 78304 mSDsCounter, 24000 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 193667 IncrementalHoareTripleChecker+Invalid, 217667 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 24000 mSolverCounterUnsat, 38629 mSDtfsCounter, 193667 mSolverCounterSat, 0.7s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1741 GetRequests, 647 SyntacticMatches, 14 SemanticMatches, 1080 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2730 ImplicationChecksByTransitivity, 13.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=978occurred in iteration=62, InterpolantAutomatonStates: 890, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 4.4s AutomataMinimizationTime, 66 MinimizatonAttempts, 8532 StatesRemovedByMinimization, 66 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 10.6s InterpolantComputationTime, 3941 NumberOfCodeBlocks, 3941 NumberOfCodeBlocksAsserted, 67 NumberOfCheckSat, 3802 ConstructedInterpolants, 0 QuantifiedInterpolants, 20031 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 66 InterpolantComputations, 66 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2022-04-05 09:31:24,218 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...