/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/automizer/LoopAccelerationJordanC.epf -i ../../../trunk/examples/svcomp/ntdrivers-simplified/cdaudio_simpl1.cil-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-6c470ae [2022-02-15 00:36:19,828 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-15 00:36:19,830 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-15 00:36:19,897 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-02-15 00:36:19,897 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-02-15 00:36:19,900 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-02-15 00:36:19,902 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-02-15 00:36:19,904 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-02-15 00:36:19,906 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-02-15 00:36:19,909 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-02-15 00:36:19,910 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-02-15 00:36:19,911 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-02-15 00:36:19,911 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-02-15 00:36:19,913 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-02-15 00:36:19,914 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-02-15 00:36:19,916 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-02-15 00:36:19,917 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-02-15 00:36:19,917 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-02-15 00:36:19,919 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-02-15 00:36:19,923 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-02-15 00:36:19,924 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-02-15 00:36:19,925 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-02-15 00:36:19,926 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-02-15 00:36:19,927 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-02-15 00:36:19,931 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-02-15 00:36:19,938 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-15 00:36:19,939 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-15 00:36:19,940 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-15 00:36:19,941 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2022-02-15 00:36:19,951 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-15 00:36:19,951 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-15 00:36:19,953 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-15 00:36:19,953 INFO L138 SettingsManager]: * sizeof long=4 [2022-02-15 00:36:19,953 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-15 00:36:19,953 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-02-15 00:36:19,953 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-15 00:36:19,953 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-15 00:36:19,953 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-15 00:36:19,953 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-15 00:36:19,954 INFO L138 SettingsManager]: * sizeof long double=12 [2022-02-15 00:36:19,954 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-15 00:36:19,954 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-15 00:36:19,954 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-15 00:36:19,955 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-15 00:36:19,955 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-15 00:36:19,955 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-02-15 00:36:19,955 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-15 00:36:19,955 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-15 00:36:19,955 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-15 00:36:19,955 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-02-15 00:36:19,957 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-02-15 00:36:19,957 INFO L138 SettingsManager]: * TransformationType=LOOP_ACCELERATION_JORDAN 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-02-15 00:36:20,148 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-15 00:36:20,162 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-15 00:36:20,164 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-15 00:36:20,165 INFO L271 PluginConnector]: Initializing CDTParser... [2022-02-15 00:36:20,165 INFO L275 PluginConnector]: CDTParser initialized [2022-02-15 00:36:20,166 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ntdrivers-simplified/cdaudio_simpl1.cil-2.c [2022-02-15 00:36:20,216 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/954d058de/7801d7bababd49a8b85f3a0d4a831e8d/FLAG58a30a806 [2022-02-15 00:36:20,611 INFO L306 CDTParser]: Found 1 translation units. [2022-02-15 00:36:20,612 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ntdrivers-simplified/cdaudio_simpl1.cil-2.c [2022-02-15 00:36:20,635 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/954d058de/7801d7bababd49a8b85f3a0d4a831e8d/FLAG58a30a806 [2022-02-15 00:36:20,999 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/954d058de/7801d7bababd49a8b85f3a0d4a831e8d [2022-02-15 00:36:21,001 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-15 00:36:21,003 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-02-15 00:36:21,005 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-02-15 00:36:21,005 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-02-15 00:36:21,008 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-02-15 00:36:21,008 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 12:36:21" (1/1) ... [2022-02-15 00:36:21,009 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14c217df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:36:21, skipping insertion in model container [2022-02-15 00:36:21,009 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 12:36:21" (1/1) ... [2022-02-15 00:36:21,014 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-02-15 00:36:21,068 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-02-15 00:36:21,230 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ntdrivers-simplified/cdaudio_simpl1.cil-2.c[2073,2086] [2022-02-15 00:36:21,372 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-15 00:36:21,378 INFO L203 MainTranslator]: Completed pre-run [2022-02-15 00:36:21,387 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ntdrivers-simplified/cdaudio_simpl1.cil-2.c[2073,2086] [2022-02-15 00:36:21,459 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-15 00:36:21,472 INFO L208 MainTranslator]: Completed translation [2022-02-15 00:36:21,472 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:36:21 WrapperNode [2022-02-15 00:36:21,472 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-02-15 00:36:21,473 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-15 00:36:21,473 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-15 00:36:21,473 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-15 00:36:21,481 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:36:21" (1/1) ... [2022-02-15 00:36:21,481 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:36:21" (1/1) ... [2022-02-15 00:36:21,503 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:36:21" (1/1) ... [2022-02-15 00:36:21,504 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:36:21" (1/1) ... [2022-02-15 00:36:21,560 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:36:21" (1/1) ... [2022-02-15 00:36:21,569 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:36:21" (1/1) ... [2022-02-15 00:36:21,587 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:36:21" (1/1) ... [2022-02-15 00:36:21,593 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-15 00:36:21,594 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-15 00:36:21,594 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-15 00:36:21,594 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-15 00:36:21,599 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:36:21" (1/1) ... [2022-02-15 00:36:21,605 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-15 00:36:21,613 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 00:36:21,639 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) [2022-02-15 00:36:21,658 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 [2022-02-15 00:36:21,676 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-02-15 00:36:21,676 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-15 00:36:21,676 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-02-15 00:36:21,676 INFO L138 BoogieDeclarations]: Found implementation of procedure errorFn [2022-02-15 00:36:21,677 INFO L138 BoogieDeclarations]: Found implementation of procedure _BLAST_init [2022-02-15 00:36:21,677 INFO L138 BoogieDeclarations]: Found implementation of procedure SendSrbSynchronous [2022-02-15 00:36:21,677 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioSignalCompletion [2022-02-15 00:36:21,677 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioStartDevice [2022-02-15 00:36:21,677 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioPnp [2022-02-15 00:36:21,677 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioDeviceControl [2022-02-15 00:36:21,678 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioSendToNextDriver [2022-02-15 00:36:21,678 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioIsPlayActive [2022-02-15 00:36:21,678 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudio535DeviceControl [2022-02-15 00:36:21,678 INFO L138 BoogieDeclarations]: Found implementation of procedure AG_SetStatusAndReturn [2022-02-15 00:36:21,678 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudio435DeviceControl [2022-02-15 00:36:21,679 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioAtapiDeviceControl [2022-02-15 00:36:21,680 INFO L138 BoogieDeclarations]: Found implementation of procedure HpCdrProcessLastSession [2022-02-15 00:36:21,680 INFO L138 BoogieDeclarations]: Found implementation of procedure HPCdrCompletion [2022-02-15 00:36:21,680 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioHPCdrDeviceControl [2022-02-15 00:36:21,680 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioForwardIrpSynchronous [2022-02-15 00:36:21,680 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioUnload [2022-02-15 00:36:21,681 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioPower [2022-02-15 00:36:21,681 INFO L138 BoogieDeclarations]: Found implementation of procedure stub_driver_init [2022-02-15 00:36:21,681 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-02-15 00:36:21,681 INFO L138 BoogieDeclarations]: Found implementation of procedure stubMoreProcessingRequired [2022-02-15 00:36:21,681 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCallDriver [2022-02-15 00:36:21,681 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCompleteRequest [2022-02-15 00:36:21,681 INFO L138 BoogieDeclarations]: Found implementation of procedure KeSetEvent [2022-02-15 00:36:21,681 INFO L138 BoogieDeclarations]: Found implementation of procedure KeWaitForSingleObject [2022-02-15 00:36:21,681 INFO L138 BoogieDeclarations]: Found implementation of procedure PoCallDriver [2022-02-15 00:36:21,681 INFO L138 BoogieDeclarations]: Found implementation of procedure ZwClose [2022-02-15 00:36:21,681 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-02-15 00:36:21,681 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-02-15 00:36:21,681 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-02-15 00:36:21,681 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-02-15 00:36:21,682 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2022-02-15 00:36:21,682 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-02-15 00:36:21,682 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2022-02-15 00:36:21,682 INFO L130 BoogieDeclarations]: Found specification of procedure SendSrbSynchronous [2022-02-15 00:36:21,682 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioSignalCompletion [2022-02-15 00:36:21,682 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioStartDevice [2022-02-15 00:36:21,682 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioPnp [2022-02-15 00:36:21,682 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioDeviceControl [2022-02-15 00:36:21,682 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioSendToNextDriver [2022-02-15 00:36:21,682 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioIsPlayActive [2022-02-15 00:36:21,682 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudio535DeviceControl [2022-02-15 00:36:21,682 INFO L130 BoogieDeclarations]: Found specification of procedure AG_SetStatusAndReturn [2022-02-15 00:36:21,682 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudio435DeviceControl [2022-02-15 00:36:21,682 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioAtapiDeviceControl [2022-02-15 00:36:21,683 INFO L130 BoogieDeclarations]: Found specification of procedure HPCdrCompletion [2022-02-15 00:36:21,683 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioHPCdrDeviceControl [2022-02-15 00:36:21,683 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioForwardIrpSynchronous [2022-02-15 00:36:21,683 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioPower [2022-02-15 00:36:21,683 INFO L130 BoogieDeclarations]: Found specification of procedure IofCallDriver [2022-02-15 00:36:21,683 INFO L130 BoogieDeclarations]: Found specification of procedure KeSetEvent [2022-02-15 00:36:21,683 INFO L130 BoogieDeclarations]: Found specification of procedure KeWaitForSingleObject [2022-02-15 00:36:21,683 INFO L130 BoogieDeclarations]: Found specification of procedure PoCallDriver [2022-02-15 00:36:21,683 INFO L130 BoogieDeclarations]: Found specification of procedure ZwClose [2022-02-15 00:36:21,683 INFO L130 BoogieDeclarations]: Found specification of procedure IofCompleteRequest [2022-02-15 00:36:21,683 INFO L130 BoogieDeclarations]: Found specification of procedure errorFn [2022-02-15 00:36:21,683 INFO L130 BoogieDeclarations]: Found specification of procedure _BLAST_init [2022-02-15 00:36:21,683 INFO L130 BoogieDeclarations]: Found specification of procedure HpCdrProcessLastSession [2022-02-15 00:36:21,683 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioUnload [2022-02-15 00:36:21,684 INFO L130 BoogieDeclarations]: Found specification of procedure stub_driver_init [2022-02-15 00:36:21,684 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-02-15 00:36:21,684 INFO L130 BoogieDeclarations]: Found specification of procedure stubMoreProcessingRequired [2022-02-15 00:36:21,684 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-02-15 00:36:21,684 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-02-15 00:36:21,684 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-15 00:36:21,684 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-02-15 00:36:21,684 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-02-15 00:36:21,684 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-02-15 00:36:21,893 INFO L234 CfgBuilder]: Building ICFG [2022-02-15 00:36:21,895 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-15 00:36:22,055 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-15 00:36:22,128 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume !false; [2022-02-15 00:36:22,128 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##14: assume false; [2022-02-15 00:36:22,137 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-15 00:36:22,169 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##18: assume !false; [2022-02-15 00:36:22,169 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##17: assume false; [2022-02-15 00:36:22,192 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-15 00:36:22,204 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##16: assume !false; [2022-02-15 00:36:22,204 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume false; [2022-02-15 00:36:22,255 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-15 00:36:22,313 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##6: assume !false; [2022-02-15 00:36:22,313 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L305: #res := 0; [2022-02-15 00:36:22,313 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##5: assume false; [2022-02-15 00:36:22,317 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-15 00:36:22,433 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##21: assume false; [2022-02-15 00:36:22,433 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##22: assume !false; [2022-02-15 00:36:22,434 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-15 00:36:22,452 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##21: assume !false; [2022-02-15 00:36:22,452 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##20: assume false; [2022-02-15 00:36:22,474 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-15 00:36:22,484 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##10: assume !false; [2022-02-15 00:36:22,485 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##9: assume false; [2022-02-15 00:36:22,489 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-15 00:36:22,597 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##26: assume !false; [2022-02-15 00:36:22,597 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##25: assume false; [2022-02-15 00:36:22,606 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-15 00:36:22,609 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-02-15 00:36:22,609 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-02-15 00:36:22,616 INFO L275 CfgBuilder]: Performing block encoding [2022-02-15 00:36:22,625 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-15 00:36:22,625 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-02-15 00:36:22,627 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 12:36:22 BoogieIcfgContainer [2022-02-15 00:36:22,627 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-15 00:36:22,628 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-02-15 00:36:22,628 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-02-15 00:36:22,632 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-02-15 00:36:22,635 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 12:36:22" (1/1) ... [2022-02-15 00:36:22,671 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 15.02 12:36:22 BasicIcfg [2022-02-15 00:36:22,672 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-02-15 00:36:22,673 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-15 00:36:22,673 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-15 00:36:22,675 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-15 00:36:22,675 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.02 12:36:21" (1/4) ... [2022-02-15 00:36:22,675 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b05b084 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 12:36:22, skipping insertion in model container [2022-02-15 00:36:22,675 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:36:21" (2/4) ... [2022-02-15 00:36:22,676 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b05b084 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 12:36:22, skipping insertion in model container [2022-02-15 00:36:22,676 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 12:36:22" (3/4) ... [2022-02-15 00:36:22,676 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b05b084 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.02 12:36:22, skipping insertion in model container [2022-02-15 00:36:22,676 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 15.02 12:36:22" (4/4) ... [2022-02-15 00:36:22,677 INFO L111 eAbstractionObserver]: Analyzing ICFG cdaudio_simpl1.cil-2.cJordan [2022-02-15 00:36:22,680 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2022-02-15 00:36:22,680 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-15 00:36:22,714 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-15 00:36:22,718 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=ForwardPredicates, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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, mLoopAccelerationTechnique=FAST_UPR [2022-02-15 00:36:22,719 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-02-15 00:36:22,737 INFO L276 IsEmpty]: Start isEmpty. Operand has 515 states, 382 states have (on average 1.486910994764398) internal successors, (568), 402 states have internal predecessors, (568), 102 states have call successors, (102), 29 states have call predecessors, (102), 29 states have return successors, (102), 98 states have call predecessors, (102), 102 states have call successors, (102) [2022-02-15 00:36:22,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-02-15 00:36:22,743 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 00:36:22,744 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 00:36:22,744 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 00:36:22,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 00:36:22,748 INFO L85 PathProgramCache]: Analyzing trace with hash -1376594176, now seen corresponding path program 1 times [2022-02-15 00:36:22,754 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 00:36:22,754 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882133278] [2022-02-15 00:36:22,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 00:36:22,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 00:36:22,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:36:23,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 00:36:23,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:36:23,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 00:36:23,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:36:23,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 00:36:23,113 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 00:36:23,113 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882133278] [2022-02-15 00:36:23,114 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1882133278] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 00:36:23,114 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 00:36:23,114 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-02-15 00:36:23,115 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953535386] [2022-02-15 00:36:23,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 00:36:23,119 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-15 00:36:23,119 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 00:36:23,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-15 00:36:23,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-02-15 00:36:23,150 INFO L87 Difference]: Start difference. First operand has 515 states, 382 states have (on average 1.486910994764398) internal successors, (568), 402 states have internal predecessors, (568), 102 states have call successors, (102), 29 states have call predecessors, (102), 29 states have return successors, (102), 98 states have call predecessors, (102), 102 states have call successors, (102) Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 3 states have internal predecessors, (14), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-02-15 00:36:24,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 00:36:24,914 INFO L93 Difference]: Finished difference Result 679 states and 1040 transitions. [2022-02-15 00:36:24,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-02-15 00:36:24,916 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 [2022-02-15 00:36:24,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 00:36:24,932 INFO L225 Difference]: With dead ends: 679 [2022-02-15 00:36:24,932 INFO L226 Difference]: Without dead ends: 663 [2022-02-15 00:36:24,934 INFO L932 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 [2022-02-15 00:36:24,936 INFO L933 BasicCegarLoop]: 738 mSDtfsCounter, 770 mSDsluCounter, 265 mSDsCounter, 0 mSdLazyCounter, 1132 mSolverCounterSat, 308 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 771 SdHoareTripleChecker+Valid, 1003 SdHoareTripleChecker+Invalid, 1440 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 308 IncrementalHoareTripleChecker+Valid, 1132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-02-15 00:36:24,937 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [771 Valid, 1003 Invalid, 1440 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [308 Valid, 1132 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-02-15 00:36:24,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 663 states. [2022-02-15 00:36:24,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 663 to 507. [2022-02-15 00:36:24,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 507 states, 377 states have (on average 1.4562334217506632) internal successors, (549), 395 states have internal predecessors, (549), 102 states have call successors, (102), 29 states have call predecessors, (102), 27 states have return successors, (86), 86 states have call predecessors, (86), 86 states have call successors, (86) [2022-02-15 00:36:24,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 507 states to 507 states and 737 transitions. [2022-02-15 00:36:24,997 INFO L78 Accepts]: Start accepts. Automaton has 507 states and 737 transitions. Word has length 20 [2022-02-15 00:36:24,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 00:36:24,997 INFO L470 AbstractCegarLoop]: Abstraction has 507 states and 737 transitions. [2022-02-15 00:36:24,998 INFO L471 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) [2022-02-15 00:36:24,998 INFO L276 IsEmpty]: Start isEmpty. Operand 507 states and 737 transitions. [2022-02-15 00:36:24,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-02-15 00:36:24,999 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 00:36:24,999 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 00:36:24,999 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-15 00:36:24,999 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 00:36:24,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 00:36:25,000 INFO L85 PathProgramCache]: Analyzing trace with hash 752029052, now seen corresponding path program 1 times [2022-02-15 00:36:25,000 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 00:36:25,000 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351320112] [2022-02-15 00:36:25,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 00:36:25,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 00:36:25,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:36:25,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 00:36:25,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:36:25,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 00:36:25,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:36:25,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-15 00:36:25,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:36:25,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 00:36:25,132 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 00:36:25,132 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351320112] [2022-02-15 00:36:25,132 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1351320112] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 00:36:25,132 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 00:36:25,132 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-02-15 00:36:25,132 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438556413] [2022-02-15 00:36:25,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 00:36:25,134 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-02-15 00:36:25,134 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 00:36:25,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-02-15 00:36:25,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-02-15 00:36:25,135 INFO L87 Difference]: Start difference. First operand 507 states and 737 transitions. Second operand has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 3 states have internal predecessors, (16), 3 states have call successors, (6), 6 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-02-15 00:36:26,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 00:36:26,853 INFO L93 Difference]: Finished difference Result 843 states and 1255 transitions. [2022-02-15 00:36:26,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-02-15 00:36:26,853 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 [2022-02-15 00:36:26,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 00:36:26,858 INFO L225 Difference]: With dead ends: 843 [2022-02-15 00:36:26,858 INFO L226 Difference]: Without dead ends: 842 [2022-02-15 00:36:26,858 INFO L932 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 [2022-02-15 00:36:26,859 INFO L933 BasicCegarLoop]: 835 mSDtfsCounter, 1102 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 1480 mSolverCounterSat, 273 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1106 SdHoareTripleChecker+Valid, 1003 SdHoareTripleChecker+Invalid, 1753 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 273 IncrementalHoareTripleChecker+Valid, 1480 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-02-15 00:36:26,859 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1106 Valid, 1003 Invalid, 1753 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [273 Valid, 1480 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-02-15 00:36:26,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 842 states. [2022-02-15 00:36:26,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 842 to 662. [2022-02-15 00:36:26,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 662 states, 501 states have (on average 1.407185628742515) internal successors, (705), 508 states have internal predecessors, (705), 111 states have call successors, (111), 40 states have call predecessors, (111), 49 states have return successors, (145), 119 states have call predecessors, (145), 99 states have call successors, (145) [2022-02-15 00:36:26,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 662 states to 662 states and 961 transitions. [2022-02-15 00:36:26,889 INFO L78 Accepts]: Start accepts. Automaton has 662 states and 961 transitions. Word has length 25 [2022-02-15 00:36:26,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 00:36:26,889 INFO L470 AbstractCegarLoop]: Abstraction has 662 states and 961 transitions. [2022-02-15 00:36:26,889 INFO L471 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) [2022-02-15 00:36:26,890 INFO L276 IsEmpty]: Start isEmpty. Operand 662 states and 961 transitions. [2022-02-15 00:36:26,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-02-15 00:36:26,891 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 00:36:26,891 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 00:36:26,891 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-02-15 00:36:26,891 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 00:36:26,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 00:36:26,892 INFO L85 PathProgramCache]: Analyzing trace with hash -2092358377, now seen corresponding path program 1 times [2022-02-15 00:36:26,892 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 00:36:26,892 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566926480] [2022-02-15 00:36:26,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 00:36:26,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 00:36:26,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:36:26,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 00:36:26,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:36:26,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 00:36:26,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:36:27,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-15 00:36:27,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:36:27,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 00:36:27,016 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 00:36:27,016 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566926480] [2022-02-15 00:36:27,016 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [566926480] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 00:36:27,016 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 00:36:27,016 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-02-15 00:36:27,016 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283280012] [2022-02-15 00:36:27,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 00:36:27,017 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-02-15 00:36:27,017 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 00:36:27,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-02-15 00:36:27,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-02-15 00:36:27,017 INFO L87 Difference]: Start difference. First operand 662 states and 961 transitions. Second operand has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 3 states have internal predecessors, (19), 3 states have call successors, (8), 6 states have call predecessors, (8), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-02-15 00:36:28,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 00:36:28,535 INFO L93 Difference]: Finished difference Result 966 states and 1409 transitions. [2022-02-15 00:36:28,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-02-15 00:36:28,536 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 [2022-02-15 00:36:28,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 00:36:28,539 INFO L225 Difference]: With dead ends: 966 [2022-02-15 00:36:28,540 INFO L226 Difference]: Without dead ends: 966 [2022-02-15 00:36:28,540 INFO L932 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 [2022-02-15 00:36:28,541 INFO L933 BasicCegarLoop]: 722 mSDtfsCounter, 1511 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 1169 mSolverCounterSat, 395 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1521 SdHoareTripleChecker+Valid, 877 SdHoareTripleChecker+Invalid, 1564 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 395 IncrementalHoareTripleChecker+Valid, 1169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-02-15 00:36:28,541 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1521 Valid, 877 Invalid, 1564 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [395 Valid, 1169 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-02-15 00:36:28,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 966 states. [2022-02-15 00:36:28,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 966 to 787. [2022-02-15 00:36:28,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 787 states, 610 states have (on average 1.4032786885245903) internal successors, (856), 613 states have internal predecessors, (856), 113 states have call successors, (113), 46 states have call predecessors, (113), 63 states have return successors, (163), 130 states have call predecessors, (163), 104 states have call successors, (163) [2022-02-15 00:36:28,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 787 states to 787 states and 1132 transitions. [2022-02-15 00:36:28,568 INFO L78 Accepts]: Start accepts. Automaton has 787 states and 1132 transitions. Word has length 30 [2022-02-15 00:36:28,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 00:36:28,568 INFO L470 AbstractCegarLoop]: Abstraction has 787 states and 1132 transitions. [2022-02-15 00:36:28,568 INFO L471 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) [2022-02-15 00:36:28,569 INFO L276 IsEmpty]: Start isEmpty. Operand 787 states and 1132 transitions. [2022-02-15 00:36:28,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-02-15 00:36:28,570 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 00:36:28,570 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 00:36:28,570 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-02-15 00:36:28,571 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 00:36:28,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 00:36:28,571 INFO L85 PathProgramCache]: Analyzing trace with hash -1387045423, now seen corresponding path program 1 times [2022-02-15 00:36:28,571 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 00:36:28,571 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010838486] [2022-02-15 00:36:28,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 00:36:28,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 00:36:28,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:36:28,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 00:36:28,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:36:28,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 00:36:28,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:36:28,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-15 00:36:28,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:36:28,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 00:36:28,681 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 00:36:28,681 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010838486] [2022-02-15 00:36:28,681 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1010838486] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 00:36:28,681 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 00:36:28,681 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-02-15 00:36:28,681 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517463215] [2022-02-15 00:36:28,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 00:36:28,682 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-02-15 00:36:28,682 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 00:36:28,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-02-15 00:36:28,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-02-15 00:36:28,682 INFO L87 Difference]: Start difference. First operand 787 states and 1132 transitions. Second operand has 6 states, 6 states have (on average 3.5) internal successors, (21), 3 states have internal predecessors, (21), 2 states have call successors, (7), 5 states have call predecessors, (7), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-02-15 00:36:30,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 00:36:30,462 INFO L93 Difference]: Finished difference Result 1340 states and 2025 transitions. [2022-02-15 00:36:30,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-02-15 00:36:30,462 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 [2022-02-15 00:36:30,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 00:36:30,467 INFO L225 Difference]: With dead ends: 1340 [2022-02-15 00:36:30,467 INFO L226 Difference]: Without dead ends: 1340 [2022-02-15 00:36:30,467 INFO L932 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 [2022-02-15 00:36:30,468 INFO L933 BasicCegarLoop]: 1003 mSDtfsCounter, 1470 mSDsluCounter, 251 mSDsCounter, 0 mSdLazyCounter, 1323 mSolverCounterSat, 523 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1473 SdHoareTripleChecker+Valid, 1254 SdHoareTripleChecker+Invalid, 1846 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 523 IncrementalHoareTripleChecker+Valid, 1323 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-02-15 00:36:30,468 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1473 Valid, 1254 Invalid, 1846 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [523 Valid, 1323 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-02-15 00:36:30,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1340 states. [2022-02-15 00:36:30,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1340 to 905. [2022-02-15 00:36:30,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 905 states, 707 states have (on average 1.413012729844413) internal successors, (999), 709 states have internal predecessors, (999), 126 states have call successors, (126), 54 states have call predecessors, (126), 71 states have return successors, (220), 144 states have call predecessors, (220), 117 states have call successors, (220) [2022-02-15 00:36:30,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 905 states to 905 states and 1345 transitions. [2022-02-15 00:36:30,494 INFO L78 Accepts]: Start accepts. Automaton has 905 states and 1345 transitions. Word has length 31 [2022-02-15 00:36:30,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 00:36:30,494 INFO L470 AbstractCegarLoop]: Abstraction has 905 states and 1345 transitions. [2022-02-15 00:36:30,494 INFO L471 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) [2022-02-15 00:36:30,494 INFO L276 IsEmpty]: Start isEmpty. Operand 905 states and 1345 transitions. [2022-02-15 00:36:30,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-02-15 00:36:30,496 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 00:36:30,496 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 00:36:30,496 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-02-15 00:36:30,496 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 00:36:30,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 00:36:30,497 INFO L85 PathProgramCache]: Analyzing trace with hash -81256447, now seen corresponding path program 1 times [2022-02-15 00:36:30,497 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 00:36:30,497 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813377684] [2022-02-15 00:36:30,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 00:36:30,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 00:36:30,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:36:30,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 00:36:30,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:36:30,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 00:36:30,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:36:30,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-15 00:36:30,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:36:30,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 00:36:30,650 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 00:36:30,650 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1813377684] [2022-02-15 00:36:30,650 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1813377684] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 00:36:30,650 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 00:36:30,650 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-02-15 00:36:30,650 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795607565] [2022-02-15 00:36:30,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 00:36:30,651 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-02-15 00:36:30,651 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 00:36:30,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-02-15 00:36:30,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-02-15 00:36:30,652 INFO L87 Difference]: Start difference. First operand 905 states and 1345 transitions. Second operand has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 6 states have internal predecessors, (22), 4 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-02-15 00:36:32,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 00:36:32,420 INFO L93 Difference]: Finished difference Result 1042 states and 1577 transitions. [2022-02-15 00:36:32,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-02-15 00:36:32,420 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 [2022-02-15 00:36:32,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 00:36:32,424 INFO L225 Difference]: With dead ends: 1042 [2022-02-15 00:36:32,424 INFO L226 Difference]: Without dead ends: 1042 [2022-02-15 00:36:32,424 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2022-02-15 00:36:32,425 INFO L933 BasicCegarLoop]: 736 mSDtfsCounter, 3721 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 917 mSolverCounterSat, 1321 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3727 SdHoareTripleChecker+Valid, 879 SdHoareTripleChecker+Invalid, 2238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1321 IncrementalHoareTripleChecker+Valid, 917 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-02-15 00:36:32,425 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3727 Valid, 879 Invalid, 2238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1321 Valid, 917 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-02-15 00:36:32,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1042 states. [2022-02-15 00:36:32,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1042 to 833. [2022-02-15 00:36:32,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 833 states, 648 states have (on average 1.3981481481481481) internal successors, (906), 651 states have internal predecessors, (906), 117 states have call successors, (117), 50 states have call predecessors, (117), 67 states have return successors, (177), 134 states have call predecessors, (177), 108 states have call successors, (177) [2022-02-15 00:36:32,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 833 states to 833 states and 1200 transitions. [2022-02-15 00:36:32,445 INFO L78 Accepts]: Start accepts. Automaton has 833 states and 1200 transitions. Word has length 32 [2022-02-15 00:36:32,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 00:36:32,446 INFO L470 AbstractCegarLoop]: Abstraction has 833 states and 1200 transitions. [2022-02-15 00:36:32,446 INFO L471 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) [2022-02-15 00:36:32,446 INFO L276 IsEmpty]: Start isEmpty. Operand 833 states and 1200 transitions. [2022-02-15 00:36:32,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-02-15 00:36:32,447 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 00:36:32,447 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 00:36:32,447 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-02-15 00:36:32,448 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 00:36:32,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 00:36:32,448 INFO L85 PathProgramCache]: Analyzing trace with hash 2003772890, now seen corresponding path program 1 times [2022-02-15 00:36:32,448 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 00:36:32,448 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634759774] [2022-02-15 00:36:32,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 00:36:32,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 00:36:32,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:36:32,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 00:36:32,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:36:32,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 00:36:32,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:36:32,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-15 00:36:32,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:36:32,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 00:36:32,548 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 00:36:32,548 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634759774] [2022-02-15 00:36:32,548 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [634759774] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 00:36:32,548 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 00:36:32,548 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-02-15 00:36:32,548 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469608876] [2022-02-15 00:36:32,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 00:36:32,549 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-02-15 00:36:32,549 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 00:36:32,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-02-15 00:36:32,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-02-15 00:36:32,549 INFO L87 Difference]: Start difference. First operand 833 states and 1200 transitions. Second operand has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 3 states have internal predecessors, (25), 3 states have call successors, (8), 6 states have call predecessors, (8), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-02-15 00:36:34,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 00:36:34,271 INFO L93 Difference]: Finished difference Result 959 states and 1417 transitions. [2022-02-15 00:36:34,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-02-15 00:36:34,272 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 [2022-02-15 00:36:34,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 00:36:34,275 INFO L225 Difference]: With dead ends: 959 [2022-02-15 00:36:34,275 INFO L226 Difference]: Without dead ends: 959 [2022-02-15 00:36:34,275 INFO L932 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 [2022-02-15 00:36:34,276 INFO L933 BasicCegarLoop]: 710 mSDtfsCounter, 407 mSDsluCounter, 265 mSDsCounter, 0 mSdLazyCounter, 1876 mSolverCounterSat, 141 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 408 SdHoareTripleChecker+Valid, 975 SdHoareTripleChecker+Invalid, 2017 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 141 IncrementalHoareTripleChecker+Valid, 1876 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-02-15 00:36:34,276 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [408 Valid, 975 Invalid, 2017 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [141 Valid, 1876 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-02-15 00:36:34,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 959 states. [2022-02-15 00:36:34,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 959 to 832. [2022-02-15 00:36:34,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 832 states, 648 states have (on average 1.3950617283950617) internal successors, (904), 650 states have internal predecessors, (904), 116 states have call successors, (116), 50 states have call predecessors, (116), 67 states have return successors, (177), 134 states have call predecessors, (177), 108 states have call successors, (177) [2022-02-15 00:36:34,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 832 states to 832 states and 1197 transitions. [2022-02-15 00:36:34,293 INFO L78 Accepts]: Start accepts. Automaton has 832 states and 1197 transitions. Word has length 36 [2022-02-15 00:36:34,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 00:36:34,293 INFO L470 AbstractCegarLoop]: Abstraction has 832 states and 1197 transitions. [2022-02-15 00:36:34,293 INFO L471 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) [2022-02-15 00:36:34,293 INFO L276 IsEmpty]: Start isEmpty. Operand 832 states and 1197 transitions. [2022-02-15 00:36:34,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-02-15 00:36:34,295 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 00:36:34,295 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 00:36:34,295 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-02-15 00:36:34,295 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 00:36:34,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 00:36:34,296 INFO L85 PathProgramCache]: Analyzing trace with hash 1794233418, now seen corresponding path program 1 times [2022-02-15 00:36:34,296 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 00:36:34,296 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517925333] [2022-02-15 00:36:34,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 00:36:34,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 00:36:34,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:36:34,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 00:36:34,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:36:34,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 00:36:34,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:36:34,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-15 00:36:34,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:36:34,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 00:36:34,430 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 00:36:34,431 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [517925333] [2022-02-15 00:36:34,431 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [517925333] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 00:36:34,431 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 00:36:34,432 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-02-15 00:36:34,432 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457902074] [2022-02-15 00:36:34,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 00:36:34,434 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-02-15 00:36:34,434 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 00:36:34,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-02-15 00:36:34,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-02-15 00:36:34,435 INFO L87 Difference]: Start difference. First operand 832 states and 1197 transitions. Second operand has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 4 states have internal predecessors, (26), 3 states have call successors, (10), 6 states have call predecessors, (10), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-02-15 00:36:36,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 00:36:36,552 INFO L93 Difference]: Finished difference Result 993 states and 1427 transitions. [2022-02-15 00:36:36,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-02-15 00:36:36,555 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 [2022-02-15 00:36:36,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 00:36:36,558 INFO L225 Difference]: With dead ends: 993 [2022-02-15 00:36:36,558 INFO L226 Difference]: Without dead ends: 993 [2022-02-15 00:36:36,558 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-02-15 00:36:36,559 INFO L933 BasicCegarLoop]: 812 mSDtfsCounter, 744 mSDsluCounter, 454 mSDsCounter, 0 mSdLazyCounter, 2621 mSolverCounterSat, 235 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 746 SdHoareTripleChecker+Valid, 1266 SdHoareTripleChecker+Invalid, 2856 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 235 IncrementalHoareTripleChecker+Valid, 2621 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-02-15 00:36:36,559 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [746 Valid, 1266 Invalid, 2856 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [235 Valid, 2621 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-02-15 00:36:36,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 993 states. [2022-02-15 00:36:36,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 993 to 734. [2022-02-15 00:36:36,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 734 states, 570 states have (on average 1.3859649122807018) internal successors, (790), 573 states have internal predecessors, (790), 105 states have call successors, (105), 45 states have call predecessors, (105), 58 states have return successors, (131), 118 states have call predecessors, (131), 97 states have call successors, (131) [2022-02-15 00:36:36,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 734 states to 734 states and 1026 transitions. [2022-02-15 00:36:36,574 INFO L78 Accepts]: Start accepts. Automaton has 734 states and 1026 transitions. Word has length 39 [2022-02-15 00:36:36,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 00:36:36,574 INFO L470 AbstractCegarLoop]: Abstraction has 734 states and 1026 transitions. [2022-02-15 00:36:36,575 INFO L471 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) [2022-02-15 00:36:36,575 INFO L276 IsEmpty]: Start isEmpty. Operand 734 states and 1026 transitions. [2022-02-15 00:36:36,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-02-15 00:36:36,576 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 00:36:36,576 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 00:36:36,576 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-02-15 00:36:36,576 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 00:36:36,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 00:36:36,576 INFO L85 PathProgramCache]: Analyzing trace with hash -1491782484, now seen corresponding path program 1 times [2022-02-15 00:36:36,576 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 00:36:36,577 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229268013] [2022-02-15 00:36:36,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 00:36:36,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 00:36:36,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:36:36,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 00:36:36,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:36:36,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 00:36:36,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:36:36,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-15 00:36:36,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:36:36,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 00:36:36,678 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 00:36:36,678 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [229268013] [2022-02-15 00:36:36,678 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [229268013] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 00:36:36,678 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 00:36:36,679 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-02-15 00:36:36,679 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573425702] [2022-02-15 00:36:36,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 00:36:36,679 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-02-15 00:36:36,679 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 00:36:36,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-02-15 00:36:36,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-02-15 00:36:36,680 INFO L87 Difference]: Start difference. First operand 734 states and 1026 transitions. Second operand has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 3 states have internal predecessors, (28), 3 states have call successors, (9), 6 states have call predecessors, (9), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-02-15 00:36:37,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 00:36:37,738 INFO L93 Difference]: Finished difference Result 957 states and 1377 transitions. [2022-02-15 00:36:37,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-02-15 00:36:37,739 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 [2022-02-15 00:36:37,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 00:36:37,741 INFO L225 Difference]: With dead ends: 957 [2022-02-15 00:36:37,742 INFO L226 Difference]: Without dead ends: 957 [2022-02-15 00:36:37,742 INFO L932 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 [2022-02-15 00:36:37,742 INFO L933 BasicCegarLoop]: 669 mSDtfsCounter, 1857 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 568 mSolverCounterSat, 528 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1865 SdHoareTripleChecker+Valid, 748 SdHoareTripleChecker+Invalid, 1096 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 528 IncrementalHoareTripleChecker+Valid, 568 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-02-15 00:36:37,743 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1865 Valid, 748 Invalid, 1096 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [528 Valid, 568 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-02-15 00:36:37,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 957 states. [2022-02-15 00:36:37,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 957 to 754. [2022-02-15 00:36:37,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 754 states, 588 states have (on average 1.3962585034013606) internal successors, (821), 600 states have internal predecessors, (821), 107 states have call successors, (107), 48 states have call predecessors, (107), 58 states have return successors, (124), 110 states have call predecessors, (124), 100 states have call successors, (124) [2022-02-15 00:36:37,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 754 states to 754 states and 1052 transitions. [2022-02-15 00:36:37,757 INFO L78 Accepts]: Start accepts. Automaton has 754 states and 1052 transitions. Word has length 40 [2022-02-15 00:36:37,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 00:36:37,757 INFO L470 AbstractCegarLoop]: Abstraction has 754 states and 1052 transitions. [2022-02-15 00:36:37,757 INFO L471 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) [2022-02-15 00:36:37,758 INFO L276 IsEmpty]: Start isEmpty. Operand 754 states and 1052 transitions. [2022-02-15 00:36:37,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-02-15 00:36:37,759 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 00:36:37,759 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 00:36:37,759 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-02-15 00:36:37,759 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 00:36:37,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 00:36:37,760 INFO L85 PathProgramCache]: Analyzing trace with hash 938541339, now seen corresponding path program 1 times [2022-02-15 00:36:37,760 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 00:36:37,760 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111752894] [2022-02-15 00:36:37,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 00:36:37,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 00:36:37,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:36:37,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 00:36:37,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:36:37,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 00:36:37,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:36:37,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-15 00:36:37,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:36:37,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-02-15 00:36:37,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:36:37,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 00:36:37,853 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 00:36:37,853 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111752894] [2022-02-15 00:36:37,854 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [111752894] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 00:36:37,854 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 00:36:37,854 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-02-15 00:36:37,854 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030927417] [2022-02-15 00:36:37,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 00:36:37,854 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-02-15 00:36:37,854 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 00:36:37,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-02-15 00:36:37,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-02-15 00:36:37,855 INFO L87 Difference]: Start difference. First operand 754 states and 1052 transitions. Second operand has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 3 states have internal predecessors, (32), 3 states have call successors, (10), 7 states have call predecessors, (10), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-02-15 00:36:39,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 00:36:39,157 INFO L93 Difference]: Finished difference Result 934 states and 1345 transitions. [2022-02-15 00:36:39,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-02-15 00:36:39,157 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 [2022-02-15 00:36:39,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 00:36:39,160 INFO L225 Difference]: With dead ends: 934 [2022-02-15 00:36:39,161 INFO L226 Difference]: Without dead ends: 934 [2022-02-15 00:36:39,161 INFO L932 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 [2022-02-15 00:36:39,161 INFO L933 BasicCegarLoop]: 788 mSDtfsCounter, 936 mSDsluCounter, 554 mSDsCounter, 0 mSdLazyCounter, 1226 mSolverCounterSat, 294 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 942 SdHoareTripleChecker+Valid, 1342 SdHoareTripleChecker+Invalid, 1520 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 294 IncrementalHoareTripleChecker+Valid, 1226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-02-15 00:36:39,161 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [942 Valid, 1342 Invalid, 1520 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [294 Valid, 1226 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-02-15 00:36:39,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 934 states. [2022-02-15 00:36:39,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 934 to 754. [2022-02-15 00:36:39,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 754 states, 588 states have (on average 1.3945578231292517) internal successors, (820), 600 states have internal predecessors, (820), 107 states have call successors, (107), 48 states have call predecessors, (107), 58 states have return successors, (124), 110 states have call predecessors, (124), 100 states have call successors, (124) [2022-02-15 00:36:39,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 754 states to 754 states and 1051 transitions. [2022-02-15 00:36:39,176 INFO L78 Accepts]: Start accepts. Automaton has 754 states and 1051 transitions. Word has length 46 [2022-02-15 00:36:39,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 00:36:39,176 INFO L470 AbstractCegarLoop]: Abstraction has 754 states and 1051 transitions. [2022-02-15 00:36:39,176 INFO L471 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) [2022-02-15 00:36:39,176 INFO L276 IsEmpty]: Start isEmpty. Operand 754 states and 1051 transitions. [2022-02-15 00:36:39,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 00:36:39,178 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 00:36:39,178 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 00:36:39,178 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-02-15 00:36:39,178 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 00:36:39,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 00:36:39,179 INFO L85 PathProgramCache]: Analyzing trace with hash -747319687, now seen corresponding path program 1 times [2022-02-15 00:36:39,179 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 00:36:39,179 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73841281] [2022-02-15 00:36:39,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 00:36:39,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 00:36:39,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:36:39,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 00:36:39,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:36:39,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 00:36:39,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:36:39,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-15 00:36:39,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:36:39,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-02-15 00:36:39,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:36:39,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 00:36:39,291 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 00:36:39,291 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73841281] [2022-02-15 00:36:39,291 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [73841281] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 00:36:39,291 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 00:36:39,292 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-02-15 00:36:39,292 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964786699] [2022-02-15 00:36:39,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 00:36:39,292 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-02-15 00:36:39,292 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 00:36:39,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-02-15 00:36:39,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-02-15 00:36:39,293 INFO L87 Difference]: Start difference. First operand 754 states and 1051 transitions. Second operand has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 3 states have internal predecessors, (34), 3 states have call successors, (9), 7 states have call predecessors, (9), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-02-15 00:36:40,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 00:36:40,327 INFO L93 Difference]: Finished difference Result 889 states and 1287 transitions. [2022-02-15 00:36:40,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-02-15 00:36:40,328 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 [2022-02-15 00:36:40,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 00:36:40,330 INFO L225 Difference]: With dead ends: 889 [2022-02-15 00:36:40,330 INFO L226 Difference]: Without dead ends: 889 [2022-02-15 00:36:40,331 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=53, Unknown=0, NotChecked=0, Total=90 [2022-02-15 00:36:40,331 INFO L933 BasicCegarLoop]: 664 mSDtfsCounter, 1519 mSDsluCounter, 446 mSDsCounter, 0 mSdLazyCounter, 732 mSolverCounterSat, 400 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1525 SdHoareTripleChecker+Valid, 1110 SdHoareTripleChecker+Invalid, 1132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 400 IncrementalHoareTripleChecker+Valid, 732 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-02-15 00:36:40,332 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1525 Valid, 1110 Invalid, 1132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [400 Valid, 732 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-02-15 00:36:40,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 889 states. [2022-02-15 00:36:40,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 889 to 743. [2022-02-15 00:36:40,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 743 states, 581 states have (on average 1.395869191049914) internal successors, (811), 593 states have internal predecessors, (811), 105 states have call successors, (105), 46 states have call predecessors, (105), 56 states have return successors, (122), 108 states have call predecessors, (122), 98 states have call successors, (122) [2022-02-15 00:36:40,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 743 states to 743 states and 1038 transitions. [2022-02-15 00:36:40,346 INFO L78 Accepts]: Start accepts. Automaton has 743 states and 1038 transitions. Word has length 47 [2022-02-15 00:36:40,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 00:36:40,348 INFO L470 AbstractCegarLoop]: Abstraction has 743 states and 1038 transitions. [2022-02-15 00:36:40,348 INFO L471 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) [2022-02-15 00:36:40,348 INFO L276 IsEmpty]: Start isEmpty. Operand 743 states and 1038 transitions. [2022-02-15 00:36:40,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-15 00:36:40,349 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 00:36:40,350 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 00:36:40,350 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-02-15 00:36:40,350 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 00:36:40,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 00:36:40,351 INFO L85 PathProgramCache]: Analyzing trace with hash -1537806195, now seen corresponding path program 1 times [2022-02-15 00:36:40,351 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 00:36:40,351 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615916866] [2022-02-15 00:36:40,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 00:36:40,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 00:36:40,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:36:40,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 00:36:40,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:36:40,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 00:36:40,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:36:40,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-15 00:36:40,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:36:40,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-02-15 00:36:40,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:36:40,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-02-15 00:36:40,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:36:40,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 00:36:40,511 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 00:36:40,511 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615916866] [2022-02-15 00:36:40,511 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1615916866] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 00:36:40,511 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 00:36:40,512 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-02-15 00:36:40,512 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430748041] [2022-02-15 00:36:40,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 00:36:40,512 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-02-15 00:36:40,512 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 00:36:40,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-02-15 00:36:40,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2022-02-15 00:36:40,513 INFO L87 Difference]: Start difference. First operand 743 states and 1038 transitions. Second operand has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 7 states have internal predecessors, (36), 4 states have call successors, (7), 6 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2022-02-15 00:36:42,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 00:36:42,342 INFO L93 Difference]: Finished difference Result 998 states and 1427 transitions. [2022-02-15 00:36:42,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-02-15 00:36:42,342 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 [2022-02-15 00:36:42,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 00:36:42,345 INFO L225 Difference]: With dead ends: 998 [2022-02-15 00:36:42,345 INFO L226 Difference]: Without dead ends: 998 [2022-02-15 00:36:42,345 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=119, Invalid=343, Unknown=0, NotChecked=0, Total=462 [2022-02-15 00:36:42,346 INFO L933 BasicCegarLoop]: 739 mSDtfsCounter, 2190 mSDsluCounter, 1185 mSDsCounter, 0 mSdLazyCounter, 2323 mSolverCounterSat, 719 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2219 SdHoareTripleChecker+Valid, 1924 SdHoareTripleChecker+Invalid, 3042 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 719 IncrementalHoareTripleChecker+Valid, 2323 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-02-15 00:36:42,346 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2219 Valid, 1924 Invalid, 3042 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [719 Valid, 2323 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-02-15 00:36:42,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 998 states. [2022-02-15 00:36:42,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 998 to 786. [2022-02-15 00:36:42,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 786 states, 616 states have (on average 1.3944805194805194) internal successors, (859), 627 states have internal predecessors, (859), 109 states have call successors, (109), 49 states have call predecessors, (109), 60 states have return successors, (131), 114 states have call predecessors, (131), 102 states have call successors, (131) [2022-02-15 00:36:42,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 786 states to 786 states and 1099 transitions. [2022-02-15 00:36:42,363 INFO L78 Accepts]: Start accepts. Automaton has 786 states and 1099 transitions. Word has length 48 [2022-02-15 00:36:42,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 00:36:42,364 INFO L470 AbstractCegarLoop]: Abstraction has 786 states and 1099 transitions. [2022-02-15 00:36:42,364 INFO L471 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) [2022-02-15 00:36:42,364 INFO L276 IsEmpty]: Start isEmpty. Operand 786 states and 1099 transitions. [2022-02-15 00:36:42,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-02-15 00:36:42,365 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 00:36:42,365 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 00:36:42,365 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-02-15 00:36:42,365 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 00:36:42,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 00:36:42,366 INFO L85 PathProgramCache]: Analyzing trace with hash 520235537, now seen corresponding path program 1 times [2022-02-15 00:36:42,366 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 00:36:42,366 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112919922] [2022-02-15 00:36:42,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 00:36:42,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 00:36:42,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:36:42,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 00:36:42,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:36:42,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 00:36:42,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:36:42,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-15 00:36:42,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:36:42,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-02-15 00:36:42,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:36:42,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-02-15 00:36:42,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:36:42,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 00:36:42,528 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 00:36:42,528 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112919922] [2022-02-15 00:36:42,528 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [112919922] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 00:36:42,528 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 00:36:42,528 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-02-15 00:36:42,528 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339854561] [2022-02-15 00:36:42,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 00:36:42,528 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-02-15 00:36:42,529 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 00:36:42,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-02-15 00:36:42,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-02-15 00:36:42,529 INFO L87 Difference]: Start difference. First operand 786 states and 1099 transitions. Second operand has 10 states, 10 states have (on average 3.8) internal successors, (38), 6 states have internal predecessors, (38), 3 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2022-02-15 00:36:44,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 00:36:44,310 INFO L93 Difference]: Finished difference Result 919 states and 1326 transitions. [2022-02-15 00:36:44,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-02-15 00:36:44,311 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 [2022-02-15 00:36:44,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 00:36:44,313 INFO L225 Difference]: With dead ends: 919 [2022-02-15 00:36:44,314 INFO L226 Difference]: Without dead ends: 919 [2022-02-15 00:36:44,314 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=95, Invalid=211, Unknown=0, NotChecked=0, Total=306 [2022-02-15 00:36:44,314 INFO L933 BasicCegarLoop]: 649 mSDtfsCounter, 1194 mSDsluCounter, 773 mSDsCounter, 0 mSdLazyCounter, 1794 mSolverCounterSat, 255 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1205 SdHoareTripleChecker+Valid, 1422 SdHoareTripleChecker+Invalid, 2049 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 255 IncrementalHoareTripleChecker+Valid, 1794 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-02-15 00:36:44,314 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1205 Valid, 1422 Invalid, 2049 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [255 Valid, 1794 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-02-15 00:36:44,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 919 states. [2022-02-15 00:36:44,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 919 to 789. [2022-02-15 00:36:44,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 789 states, 619 states have (on average 1.394184168012924) internal successors, (863), 630 states have internal predecessors, (863), 109 states have call successors, (109), 49 states have call predecessors, (109), 60 states have return successors, (131), 114 states have call predecessors, (131), 102 states have call successors, (131) [2022-02-15 00:36:44,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 789 states to 789 states and 1103 transitions. [2022-02-15 00:36:44,329 INFO L78 Accepts]: Start accepts. Automaton has 789 states and 1103 transitions. Word has length 50 [2022-02-15 00:36:44,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 00:36:44,329 INFO L470 AbstractCegarLoop]: Abstraction has 789 states and 1103 transitions. [2022-02-15 00:36:44,329 INFO L471 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) [2022-02-15 00:36:44,329 INFO L276 IsEmpty]: Start isEmpty. Operand 789 states and 1103 transitions. [2022-02-15 00:36:44,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-02-15 00:36:44,330 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 00:36:44,331 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 00:36:44,331 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-02-15 00:36:44,331 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 00:36:44,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 00:36:44,331 INFO L85 PathProgramCache]: Analyzing trace with hash -476836816, now seen corresponding path program 1 times [2022-02-15 00:36:44,331 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 00:36:44,331 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777202592] [2022-02-15 00:36:44,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 00:36:44,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 00:36:44,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:36:44,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 00:36:44,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:36:44,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 00:36:44,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:36:44,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-15 00:36:44,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:36:44,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-02-15 00:36:44,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:36:44,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-02-15 00:36:44,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:36:44,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 00:36:44,497 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 00:36:44,497 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777202592] [2022-02-15 00:36:44,497 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [777202592] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 00:36:44,497 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 00:36:44,497 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-02-15 00:36:44,497 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173807884] [2022-02-15 00:36:44,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 00:36:44,497 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-02-15 00:36:44,497 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 00:36:44,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-02-15 00:36:44,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2022-02-15 00:36:44,498 INFO L87 Difference]: Start difference. First operand 789 states and 1103 transitions. Second operand has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 8 states have internal predecessors, (38), 4 states have call successors, (7), 6 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2022-02-15 00:36:46,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 00:36:46,169 INFO L93 Difference]: Finished difference Result 906 states and 1308 transitions. [2022-02-15 00:36:46,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-02-15 00:36:46,170 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 [2022-02-15 00:36:46,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 00:36:46,172 INFO L225 Difference]: With dead ends: 906 [2022-02-15 00:36:46,173 INFO L226 Difference]: Without dead ends: 906 [2022-02-15 00:36:46,173 INFO L932 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 [2022-02-15 00:36:46,173 INFO L933 BasicCegarLoop]: 649 mSDtfsCounter, 2247 mSDsluCounter, 1113 mSDsCounter, 0 mSdLazyCounter, 2166 mSolverCounterSat, 664 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2256 SdHoareTripleChecker+Valid, 1762 SdHoareTripleChecker+Invalid, 2830 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 664 IncrementalHoareTripleChecker+Valid, 2166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-02-15 00:36:46,173 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2256 Valid, 1762 Invalid, 2830 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [664 Valid, 2166 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-02-15 00:36:46,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 906 states. [2022-02-15 00:36:46,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 906 to 784. [2022-02-15 00:36:46,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 784 states, 614 states have (on average 1.3892508143322475) internal successors, (853), 625 states have internal predecessors, (853), 109 states have call successors, (109), 49 states have call predecessors, (109), 60 states have return successors, (131), 114 states have call predecessors, (131), 102 states have call successors, (131) [2022-02-15 00:36:46,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 784 states to 784 states and 1093 transitions. [2022-02-15 00:36:46,187 INFO L78 Accepts]: Start accepts. Automaton has 784 states and 1093 transitions. Word has length 50 [2022-02-15 00:36:46,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 00:36:46,187 INFO L470 AbstractCegarLoop]: Abstraction has 784 states and 1093 transitions. [2022-02-15 00:36:46,187 INFO L471 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) [2022-02-15 00:36:46,187 INFO L276 IsEmpty]: Start isEmpty. Operand 784 states and 1093 transitions. [2022-02-15 00:36:46,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-02-15 00:36:46,189 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 00:36:46,189 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 00:36:46,189 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-02-15 00:36:46,189 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 00:36:46,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 00:36:46,189 INFO L85 PathProgramCache]: Analyzing trace with hash 1976586256, now seen corresponding path program 1 times [2022-02-15 00:36:46,189 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 00:36:46,189 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553242229] [2022-02-15 00:36:46,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 00:36:46,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 00:36:46,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:36:46,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 00:36:46,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:36:46,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 00:36:46,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:36:46,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-15 00:36:46,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:36:46,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-02-15 00:36:46,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:36:46,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-02-15 00:36:46,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:36:46,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 00:36:46,296 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 00:36:46,296 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553242229] [2022-02-15 00:36:46,296 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [553242229] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 00:36:46,296 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 00:36:46,296 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-02-15 00:36:46,296 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481368156] [2022-02-15 00:36:46,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 00:36:46,297 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-02-15 00:36:46,297 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 00:36:46,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-02-15 00:36:46,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-02-15 00:36:46,297 INFO L87 Difference]: Start difference. First operand 784 states and 1093 transitions. Second operand has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (7), 6 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2022-02-15 00:36:47,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 00:36:47,413 INFO L93 Difference]: Finished difference Result 1060 states and 1513 transitions. [2022-02-15 00:36:47,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-02-15 00:36:47,413 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 [2022-02-15 00:36:47,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 00:36:47,416 INFO L225 Difference]: With dead ends: 1060 [2022-02-15 00:36:47,416 INFO L226 Difference]: Without dead ends: 1060 [2022-02-15 00:36:47,417 INFO L932 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 [2022-02-15 00:36:47,417 INFO L933 BasicCegarLoop]: 780 mSDtfsCounter, 887 mSDsluCounter, 522 mSDsCounter, 0 mSdLazyCounter, 843 mSolverCounterSat, 296 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 890 SdHoareTripleChecker+Valid, 1302 SdHoareTripleChecker+Invalid, 1139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 296 IncrementalHoareTripleChecker+Valid, 843 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-02-15 00:36:47,417 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [890 Valid, 1302 Invalid, 1139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [296 Valid, 843 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-02-15 00:36:47,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1060 states. [2022-02-15 00:36:47,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1060 to 837. [2022-02-15 00:36:47,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 837 states, 653 states have (on average 1.3721286370597243) internal successors, (896), 666 states have internal predecessors, (896), 111 states have call successors, (111), 51 states have call predecessors, (111), 72 states have return successors, (143), 126 states have call predecessors, (143), 104 states have call successors, (143) [2022-02-15 00:36:47,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 837 states to 837 states and 1150 transitions. [2022-02-15 00:36:47,431 INFO L78 Accepts]: Start accepts. Automaton has 837 states and 1150 transitions. Word has length 50 [2022-02-15 00:36:47,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 00:36:47,432 INFO L470 AbstractCegarLoop]: Abstraction has 837 states and 1150 transitions. [2022-02-15 00:36:47,432 INFO L471 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) [2022-02-15 00:36:47,432 INFO L276 IsEmpty]: Start isEmpty. Operand 837 states and 1150 transitions. [2022-02-15 00:36:47,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-02-15 00:36:47,433 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 00:36:47,433 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 00:36:47,433 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-02-15 00:36:47,433 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 00:36:47,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 00:36:47,434 INFO L85 PathProgramCache]: Analyzing trace with hash 2001757018, now seen corresponding path program 1 times [2022-02-15 00:36:47,434 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 00:36:47,434 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757865177] [2022-02-15 00:36:47,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 00:36:47,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 00:36:47,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:36:47,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 00:36:47,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:36:47,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 00:36:47,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:36:47,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-15 00:36:47,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:36:47,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-02-15 00:36:47,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:36:47,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-02-15 00:36:47,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:36:47,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 00:36:47,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:36:47,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 00:36:47,591 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 00:36:47,591 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757865177] [2022-02-15 00:36:47,591 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1757865177] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 00:36:47,592 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 00:36:47,592 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-02-15 00:36:47,592 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053059056] [2022-02-15 00:36:47,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 00:36:47,592 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-02-15 00:36:47,592 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 00:36:47,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-02-15 00:36:47,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2022-02-15 00:36:47,593 INFO L87 Difference]: Start difference. First operand 837 states and 1150 transitions. Second operand has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (8), 8 states have call predecessors, (8), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2022-02-15 00:36:49,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 00:36:49,205 INFO L93 Difference]: Finished difference Result 977 states and 1385 transitions. [2022-02-15 00:36:49,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-02-15 00:36:49,206 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 [2022-02-15 00:36:49,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 00:36:49,208 INFO L225 Difference]: With dead ends: 977 [2022-02-15 00:36:49,209 INFO L226 Difference]: Without dead ends: 977 [2022-02-15 00:36:49,209 INFO L932 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 [2022-02-15 00:36:49,209 INFO L933 BasicCegarLoop]: 690 mSDtfsCounter, 1173 mSDsluCounter, 743 mSDsCounter, 0 mSdLazyCounter, 1853 mSolverCounterSat, 419 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1176 SdHoareTripleChecker+Valid, 1433 SdHoareTripleChecker+Invalid, 2272 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 419 IncrementalHoareTripleChecker+Valid, 1853 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-02-15 00:36:49,209 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1176 Valid, 1433 Invalid, 2272 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [419 Valid, 1853 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-02-15 00:36:49,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 977 states. [2022-02-15 00:36:49,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 977 to 855. [2022-02-15 00:36:49,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 855 states, 668 states have (on average 1.3682634730538923) internal successors, (914), 682 states have internal predecessors, (914), 112 states have call successors, (112), 52 states have call predecessors, (112), 74 states have return successors, (145), 128 states have call predecessors, (145), 105 states have call successors, (145) [2022-02-15 00:36:49,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 855 states to 855 states and 1171 transitions. [2022-02-15 00:36:49,222 INFO L78 Accepts]: Start accepts. Automaton has 855 states and 1171 transitions. Word has length 52 [2022-02-15 00:36:49,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 00:36:49,222 INFO L470 AbstractCegarLoop]: Abstraction has 855 states and 1171 transitions. [2022-02-15 00:36:49,223 INFO L471 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) [2022-02-15 00:36:49,223 INFO L276 IsEmpty]: Start isEmpty. Operand 855 states and 1171 transitions. [2022-02-15 00:36:49,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-02-15 00:36:49,224 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 00:36:49,224 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 00:36:49,224 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-02-15 00:36:49,224 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 00:36:49,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 00:36:49,225 INFO L85 PathProgramCache]: Analyzing trace with hash 2085636174, now seen corresponding path program 1 times [2022-02-15 00:36:49,225 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 00:36:49,225 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060543933] [2022-02-15 00:36:49,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 00:36:49,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 00:36:49,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:36:49,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 00:36:49,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:36:49,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 00:36:49,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:36:49,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-15 00:36:49,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:36:49,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-02-15 00:36:49,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:36:49,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-02-15 00:36:49,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:36:49,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 00:36:49,327 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 00:36:49,327 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060543933] [2022-02-15 00:36:49,327 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1060543933] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 00:36:49,327 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 00:36:49,327 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-02-15 00:36:49,327 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277401984] [2022-02-15 00:36:49,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 00:36:49,327 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-15 00:36:49,327 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 00:36:49,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-15 00:36:49,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-02-15 00:36:49,328 INFO L87 Difference]: Start difference. First operand 855 states and 1171 transitions. Second operand has 8 states, 8 states have (on average 4.875) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (10), 7 states have call predecessors, (10), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2022-02-15 00:36:50,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 00:36:50,732 INFO L93 Difference]: Finished difference Result 947 states and 1347 transitions. [2022-02-15 00:36:50,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-02-15 00:36:50,732 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 [2022-02-15 00:36:50,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 00:36:50,735 INFO L225 Difference]: With dead ends: 947 [2022-02-15 00:36:50,735 INFO L226 Difference]: Without dead ends: 947 [2022-02-15 00:36:50,735 INFO L932 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 [2022-02-15 00:36:50,735 INFO L933 BasicCegarLoop]: 638 mSDtfsCounter, 1398 mSDsluCounter, 526 mSDsCounter, 0 mSdLazyCounter, 1350 mSolverCounterSat, 497 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1431 SdHoareTripleChecker+Valid, 1164 SdHoareTripleChecker+Invalid, 1847 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 497 IncrementalHoareTripleChecker+Valid, 1350 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-02-15 00:36:50,736 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1431 Valid, 1164 Invalid, 1847 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [497 Valid, 1350 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-02-15 00:36:50,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 947 states. [2022-02-15 00:36:50,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 947 to 827. [2022-02-15 00:36:50,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 827 states, 647 states have (on average 1.3663060278207109) internal successors, (884), 659 states have internal predecessors, (884), 110 states have call successors, (110), 51 states have call predecessors, (110), 69 states have return successors, (140), 123 states have call predecessors, (140), 104 states have call successors, (140) [2022-02-15 00:36:50,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 827 states to 827 states and 1134 transitions. [2022-02-15 00:36:50,748 INFO L78 Accepts]: Start accepts. Automaton has 827 states and 1134 transitions. Word has length 54 [2022-02-15 00:36:50,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 00:36:50,748 INFO L470 AbstractCegarLoop]: Abstraction has 827 states and 1134 transitions. [2022-02-15 00:36:50,748 INFO L471 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) [2022-02-15 00:36:50,748 INFO L276 IsEmpty]: Start isEmpty. Operand 827 states and 1134 transitions. [2022-02-15 00:36:50,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-02-15 00:36:50,749 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 00:36:50,750 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 00:36:50,750 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-02-15 00:36:50,750 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 00:36:50,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 00:36:50,750 INFO L85 PathProgramCache]: Analyzing trace with hash 1175170233, now seen corresponding path program 1 times [2022-02-15 00:36:50,750 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 00:36:50,750 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414323333] [2022-02-15 00:36:50,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 00:36:50,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 00:36:50,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:36:50,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 00:36:50,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:36:50,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 00:36:50,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:36:50,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-15 00:36:50,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:36:50,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-02-15 00:36:50,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:36:50,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-02-15 00:36:50,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:36:50,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 00:36:50,899 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 00:36:50,899 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414323333] [2022-02-15 00:36:50,899 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1414323333] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 00:36:50,899 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 00:36:50,899 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-02-15 00:36:50,899 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993636990] [2022-02-15 00:36:50,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 00:36:50,899 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-02-15 00:36:50,899 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 00:36:50,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-02-15 00:36:50,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2022-02-15 00:36:50,900 INFO L87 Difference]: Start difference. First operand 827 states and 1134 transitions. Second operand has 12 states, 12 states have (on average 3.25) internal successors, (39), 6 states have internal predecessors, (39), 2 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2022-02-15 00:36:52,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 00:36:52,671 INFO L93 Difference]: Finished difference Result 969 states and 1371 transitions. [2022-02-15 00:36:52,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-02-15 00:36:52,672 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 [2022-02-15 00:36:52,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 00:36:52,674 INFO L225 Difference]: With dead ends: 969 [2022-02-15 00:36:52,674 INFO L226 Difference]: Without dead ends: 968 [2022-02-15 00:36:52,675 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2022-02-15 00:36:52,675 INFO L933 BasicCegarLoop]: 704 mSDtfsCounter, 1105 mSDsluCounter, 1704 mSDsCounter, 0 mSdLazyCounter, 3440 mSolverCounterSat, 412 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1107 SdHoareTripleChecker+Valid, 2408 SdHoareTripleChecker+Invalid, 3852 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 412 IncrementalHoareTripleChecker+Valid, 3440 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-02-15 00:36:52,675 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1107 Valid, 2408 Invalid, 3852 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [412 Valid, 3440 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-02-15 00:36:52,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 968 states. [2022-02-15 00:36:52,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 968 to 846. [2022-02-15 00:36:52,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 846 states, 663 states have (on average 1.358974358974359) internal successors, (901), 676 states have internal predecessors, (901), 111 states have call successors, (111), 51 states have call predecessors, (111), 71 states have return successors, (143), 126 states have call predecessors, (143), 105 states have call successors, (143) [2022-02-15 00:36:52,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 846 states to 846 states and 1155 transitions. [2022-02-15 00:36:52,687 INFO L78 Accepts]: Start accepts. Automaton has 846 states and 1155 transitions. Word has length 51 [2022-02-15 00:36:52,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 00:36:52,687 INFO L470 AbstractCegarLoop]: Abstraction has 846 states and 1155 transitions. [2022-02-15 00:36:52,688 INFO L471 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) [2022-02-15 00:36:52,688 INFO L276 IsEmpty]: Start isEmpty. Operand 846 states and 1155 transitions. [2022-02-15 00:36:52,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-02-15 00:36:52,689 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 00:36:52,689 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 00:36:52,689 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-02-15 00:36:52,689 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 00:36:52,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 00:36:52,690 INFO L85 PathProgramCache]: Analyzing trace with hash 1175201977, now seen corresponding path program 1 times [2022-02-15 00:36:52,690 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 00:36:52,690 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950923508] [2022-02-15 00:36:52,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 00:36:52,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 00:36:52,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:36:52,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 00:36:52,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:36:52,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 00:36:52,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:36:52,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-15 00:36:52,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:36:52,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-02-15 00:36:52,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:36:52,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-02-15 00:36:52,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:36:52,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 00:36:52,822 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 00:36:52,822 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950923508] [2022-02-15 00:36:52,822 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1950923508] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 00:36:52,822 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 00:36:52,822 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-02-15 00:36:52,822 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220714856] [2022-02-15 00:36:52,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 00:36:52,823 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-02-15 00:36:52,823 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 00:36:52,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-02-15 00:36:52,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2022-02-15 00:36:52,823 INFO L87 Difference]: Start difference. First operand 846 states and 1155 transitions. Second operand has 12 states, 12 states have (on average 3.25) internal successors, (39), 6 states have internal predecessors, (39), 2 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2022-02-15 00:36:54,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 00:36:54,477 INFO L93 Difference]: Finished difference Result 978 states and 1382 transitions. [2022-02-15 00:36:54,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-02-15 00:36:54,478 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 [2022-02-15 00:36:54,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 00:36:54,481 INFO L225 Difference]: With dead ends: 978 [2022-02-15 00:36:54,481 INFO L226 Difference]: Without dead ends: 957 [2022-02-15 00:36:54,481 INFO L932 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 [2022-02-15 00:36:54,481 INFO L933 BasicCegarLoop]: 703 mSDtfsCounter, 1099 mSDsluCounter, 1634 mSDsCounter, 0 mSdLazyCounter, 3502 mSolverCounterSat, 412 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1101 SdHoareTripleChecker+Valid, 2337 SdHoareTripleChecker+Invalid, 3914 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 412 IncrementalHoareTripleChecker+Valid, 3502 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-02-15 00:36:54,482 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1101 Valid, 2337 Invalid, 3914 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [412 Valid, 3502 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-02-15 00:36:54,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 957 states. [2022-02-15 00:36:54,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 957 to 833. [2022-02-15 00:36:54,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 833 states, 652 states have (on average 1.3634969325153374) internal successors, (889), 665 states have internal predecessors, (889), 111 states have call successors, (111), 51 states have call predecessors, (111), 69 states have return successors, (141), 124 states have call predecessors, (141), 105 states have call successors, (141) [2022-02-15 00:36:54,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 833 states to 833 states and 1141 transitions. [2022-02-15 00:36:54,496 INFO L78 Accepts]: Start accepts. Automaton has 833 states and 1141 transitions. Word has length 51 [2022-02-15 00:36:54,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 00:36:54,496 INFO L470 AbstractCegarLoop]: Abstraction has 833 states and 1141 transitions. [2022-02-15 00:36:54,496 INFO L471 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) [2022-02-15 00:36:54,496 INFO L276 IsEmpty]: Start isEmpty. Operand 833 states and 1141 transitions. [2022-02-15 00:36:54,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-02-15 00:36:54,498 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 00:36:54,498 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 00:36:54,498 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-02-15 00:36:54,498 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 00:36:54,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 00:36:54,498 INFO L85 PathProgramCache]: Analyzing trace with hash 1955463855, now seen corresponding path program 1 times [2022-02-15 00:36:54,498 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 00:36:54,498 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746004459] [2022-02-15 00:36:54,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 00:36:54,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 00:36:54,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:36:54,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 00:36:54,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:36:54,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 00:36:54,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:36:54,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-15 00:36:54,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:36:54,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-02-15 00:36:54,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:36:54,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-02-15 00:36:54,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:36:54,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 00:36:54,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:36:54,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 00:36:54,713 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 00:36:54,714 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746004459] [2022-02-15 00:36:54,714 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1746004459] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 00:36:54,714 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 00:36:54,714 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-02-15 00:36:54,714 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892329158] [2022-02-15 00:36:54,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 00:36:54,715 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-02-15 00:36:54,715 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 00:36:54,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-02-15 00:36:54,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2022-02-15 00:36:54,716 INFO L87 Difference]: Start difference. First operand 833 states and 1141 transitions. Second operand has 13 states, 13 states have (on average 3.0) internal successors, (39), 7 states have internal predecessors, (39), 3 states have call successors, (8), 8 states have call predecessors, (8), 4 states have return successors, (6), 5 states have call predecessors, (6), 2 states have call successors, (6) [2022-02-15 00:36:56,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 00:36:56,962 INFO L93 Difference]: Finished difference Result 957 states and 1356 transitions. [2022-02-15 00:36:56,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-02-15 00:36:56,962 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 [2022-02-15 00:36:56,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 00:36:56,965 INFO L225 Difference]: With dead ends: 957 [2022-02-15 00:36:56,965 INFO L226 Difference]: Without dead ends: 957 [2022-02-15 00:36:56,965 INFO L932 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 [2022-02-15 00:36:56,965 INFO L933 BasicCegarLoop]: 653 mSDtfsCounter, 1580 mSDsluCounter, 1017 mSDsCounter, 0 mSdLazyCounter, 3414 mSolverCounterSat, 511 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1606 SdHoareTripleChecker+Valid, 1670 SdHoareTripleChecker+Invalid, 3925 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 511 IncrementalHoareTripleChecker+Valid, 3414 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-02-15 00:36:56,966 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1606 Valid, 1670 Invalid, 3925 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [511 Valid, 3414 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-02-15 00:36:56,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 957 states. [2022-02-15 00:36:56,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 957 to 833. [2022-02-15 00:36:56,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 833 states, 652 states have (on average 1.361963190184049) internal successors, (888), 665 states have internal predecessors, (888), 111 states have call successors, (111), 51 states have call predecessors, (111), 69 states have return successors, (141), 124 states have call predecessors, (141), 105 states have call successors, (141) [2022-02-15 00:36:56,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 833 states to 833 states and 1140 transitions. [2022-02-15 00:36:56,978 INFO L78 Accepts]: Start accepts. Automaton has 833 states and 1140 transitions. Word has length 53 [2022-02-15 00:36:56,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 00:36:56,978 INFO L470 AbstractCegarLoop]: Abstraction has 833 states and 1140 transitions. [2022-02-15 00:36:56,978 INFO L471 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) [2022-02-15 00:36:56,978 INFO L276 IsEmpty]: Start isEmpty. Operand 833 states and 1140 transitions. [2022-02-15 00:36:56,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-02-15 00:36:56,980 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 00:36:56,980 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 00:36:56,980 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-02-15 00:36:56,980 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 00:36:56,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 00:36:56,980 INFO L85 PathProgramCache]: Analyzing trace with hash -1151246814, now seen corresponding path program 1 times [2022-02-15 00:36:56,980 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 00:36:56,981 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463136680] [2022-02-15 00:36:56,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 00:36:56,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 00:36:56,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:36:57,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 00:36:57,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:36:57,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 00:36:57,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:36:57,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-15 00:36:57,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:36:57,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-02-15 00:36:57,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:36:57,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-02-15 00:36:57,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:36:57,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 00:36:57,123 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 00:36:57,123 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463136680] [2022-02-15 00:36:57,123 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1463136680] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 00:36:57,123 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 00:36:57,123 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-02-15 00:36:57,123 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900148494] [2022-02-15 00:36:57,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 00:36:57,124 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-02-15 00:36:57,124 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 00:36:57,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-02-15 00:36:57,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-02-15 00:36:57,124 INFO L87 Difference]: Start difference. First operand 833 states and 1140 transitions. Second operand has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 5 states have internal predecessors, (40), 3 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2022-02-15 00:36:58,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 00:36:58,889 INFO L93 Difference]: Finished difference Result 963 states and 1360 transitions. [2022-02-15 00:36:58,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-02-15 00:36:58,890 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 [2022-02-15 00:36:58,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 00:36:58,892 INFO L225 Difference]: With dead ends: 963 [2022-02-15 00:36:58,893 INFO L226 Difference]: Without dead ends: 931 [2022-02-15 00:36:58,893 INFO L932 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 [2022-02-15 00:36:58,893 INFO L933 BasicCegarLoop]: 656 mSDtfsCounter, 1920 mSDsluCounter, 622 mSDsCounter, 0 mSdLazyCounter, 1884 mSolverCounterSat, 583 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1935 SdHoareTripleChecker+Valid, 1278 SdHoareTripleChecker+Invalid, 2467 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 583 IncrementalHoareTripleChecker+Valid, 1884 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-02-15 00:36:58,893 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1935 Valid, 1278 Invalid, 2467 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [583 Valid, 1884 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-02-15 00:36:58,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 931 states. [2022-02-15 00:36:58,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 931 to 805. [2022-02-15 00:36:58,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 805 states, 629 states have (on average 1.370429252782194) internal successors, (862), 641 states have internal predecessors, (862), 108 states have call successors, (108), 49 states have call predecessors, (108), 67 states have return successors, (138), 121 states have call predecessors, (138), 102 states have call successors, (138) [2022-02-15 00:36:58,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 805 states to 805 states and 1108 transitions. [2022-02-15 00:36:58,906 INFO L78 Accepts]: Start accepts. Automaton has 805 states and 1108 transitions. Word has length 52 [2022-02-15 00:36:58,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 00:36:58,906 INFO L470 AbstractCegarLoop]: Abstraction has 805 states and 1108 transitions. [2022-02-15 00:36:58,906 INFO L471 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) [2022-02-15 00:36:58,906 INFO L276 IsEmpty]: Start isEmpty. Operand 805 states and 1108 transitions. [2022-02-15 00:36:58,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-02-15 00:36:58,908 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 00:36:58,908 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 00:36:58,908 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-02-15 00:36:58,908 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 00:36:58,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 00:36:58,908 INFO L85 PathProgramCache]: Analyzing trace with hash -437720056, now seen corresponding path program 1 times [2022-02-15 00:36:58,908 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 00:36:58,908 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290034755] [2022-02-15 00:36:58,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 00:36:58,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 00:36:58,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:36:58,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 00:36:58,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:36:58,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 00:36:58,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:36:59,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-15 00:36:59,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:36:59,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-02-15 00:36:59,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:36:59,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-02-15 00:36:59,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:36:59,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 00:36:59,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:36:59,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 00:36:59,086 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 00:36:59,086 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290034755] [2022-02-15 00:36:59,086 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1290034755] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 00:36:59,086 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 00:36:59,086 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-02-15 00:36:59,087 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489974652] [2022-02-15 00:36:59,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 00:36:59,087 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-02-15 00:36:59,087 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 00:36:59,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-02-15 00:36:59,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2022-02-15 00:36:59,088 INFO L87 Difference]: Start difference. First operand 805 states and 1108 transitions. Second operand has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 7 states have internal predecessors, (40), 3 states have call successors, (8), 8 states have call predecessors, (8), 4 states have return successors, (6), 5 states have call predecessors, (6), 2 states have call successors, (6) [2022-02-15 00:37:01,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 00:37:01,332 INFO L93 Difference]: Finished difference Result 927 states and 1321 transitions. [2022-02-15 00:37:01,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-02-15 00:37:01,332 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 [2022-02-15 00:37:01,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 00:37:01,335 INFO L225 Difference]: With dead ends: 927 [2022-02-15 00:37:01,335 INFO L226 Difference]: Without dead ends: 927 [2022-02-15 00:37:01,335 INFO L932 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 [2022-02-15 00:37:01,335 INFO L933 BasicCegarLoop]: 624 mSDtfsCounter, 1892 mSDsluCounter, 687 mSDsCounter, 0 mSdLazyCounter, 2646 mSolverCounterSat, 680 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1918 SdHoareTripleChecker+Valid, 1311 SdHoareTripleChecker+Invalid, 3326 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 680 IncrementalHoareTripleChecker+Valid, 2646 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-02-15 00:37:01,335 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1918 Valid, 1311 Invalid, 3326 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [680 Valid, 2646 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-02-15 00:37:01,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 927 states. [2022-02-15 00:37:01,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 927 to 805. [2022-02-15 00:37:01,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 805 states, 629 states have (on average 1.368839427662957) internal successors, (861), 641 states have internal predecessors, (861), 108 states have call successors, (108), 49 states have call predecessors, (108), 67 states have return successors, (138), 121 states have call predecessors, (138), 102 states have call successors, (138) [2022-02-15 00:37:01,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 805 states to 805 states and 1107 transitions. [2022-02-15 00:37:01,347 INFO L78 Accepts]: Start accepts. Automaton has 805 states and 1107 transitions. Word has length 54 [2022-02-15 00:37:01,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 00:37:01,347 INFO L470 AbstractCegarLoop]: Abstraction has 805 states and 1107 transitions. [2022-02-15 00:37:01,347 INFO L471 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) [2022-02-15 00:37:01,347 INFO L276 IsEmpty]: Start isEmpty. Operand 805 states and 1107 transitions. [2022-02-15 00:37:01,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-02-15 00:37:01,349 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 00:37:01,349 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 00:37:01,349 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-02-15 00:37:01,349 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 00:37:01,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 00:37:01,350 INFO L85 PathProgramCache]: Analyzing trace with hash -1268427453, now seen corresponding path program 1 times [2022-02-15 00:37:01,350 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 00:37:01,350 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843949863] [2022-02-15 00:37:01,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 00:37:01,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 00:37:01,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:37:01,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 00:37:01,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:37:01,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 00:37:01,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:37:01,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-15 00:37:01,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:37:01,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-02-15 00:37:01,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:37:01,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-02-15 00:37:01,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:37:01,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 00:37:01,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:37:01,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 00:37:01,538 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 00:37:01,538 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843949863] [2022-02-15 00:37:01,538 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1843949863] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 00:37:01,538 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 00:37:01,538 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-02-15 00:37:01,538 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783064684] [2022-02-15 00:37:01,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 00:37:01,539 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-02-15 00:37:01,539 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 00:37:01,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-02-15 00:37:01,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2022-02-15 00:37:01,539 INFO L87 Difference]: Start difference. First operand 805 states and 1107 transitions. Second operand has 15 states, 15 states have (on average 2.7333333333333334) internal successors, (41), 7 states have internal predecessors, (41), 3 states have call successors, (8), 8 states have call predecessors, (8), 3 states have return successors, (6), 4 states have call predecessors, (6), 2 states have call successors, (6) [2022-02-15 00:37:04,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 00:37:04,035 INFO L93 Difference]: Finished difference Result 953 states and 1353 transitions. [2022-02-15 00:37:04,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-02-15 00:37:04,037 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 [2022-02-15 00:37:04,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 00:37:04,040 INFO L225 Difference]: With dead ends: 953 [2022-02-15 00:37:04,040 INFO L226 Difference]: Without dead ends: 916 [2022-02-15 00:37:04,040 INFO L932 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 [2022-02-15 00:37:04,041 INFO L933 BasicCegarLoop]: 675 mSDtfsCounter, 728 mSDsluCounter, 2043 mSDsCounter, 0 mSdLazyCounter, 5345 mSolverCounterSat, 296 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 731 SdHoareTripleChecker+Valid, 2718 SdHoareTripleChecker+Invalid, 5641 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 296 IncrementalHoareTripleChecker+Valid, 5345 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-02-15 00:37:04,041 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [731 Valid, 2718 Invalid, 5641 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [296 Valid, 5345 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-02-15 00:37:04,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 916 states. [2022-02-15 00:37:04,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 916 to 796. [2022-02-15 00:37:04,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 796 states, 622 states have (on average 1.3520900321543408) internal successors, (841), 634 states have internal predecessors, (841), 106 states have call successors, (106), 49 states have call predecessors, (106), 67 states have return successors, (136), 119 states have call predecessors, (136), 100 states have call successors, (136) [2022-02-15 00:37:04,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 796 states to 796 states and 1083 transitions. [2022-02-15 00:37:04,056 INFO L78 Accepts]: Start accepts. Automaton has 796 states and 1083 transitions. Word has length 55 [2022-02-15 00:37:04,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 00:37:04,057 INFO L470 AbstractCegarLoop]: Abstraction has 796 states and 1083 transitions. [2022-02-15 00:37:04,057 INFO L471 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) [2022-02-15 00:37:04,057 INFO L276 IsEmpty]: Start isEmpty. Operand 796 states and 1083 transitions. [2022-02-15 00:37:04,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-02-15 00:37:04,058 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 00:37:04,058 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 00:37:04,058 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-02-15 00:37:04,058 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 00:37:04,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 00:37:04,059 INFO L85 PathProgramCache]: Analyzing trace with hash -979957660, now seen corresponding path program 1 times [2022-02-15 00:37:04,059 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 00:37:04,059 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495653095] [2022-02-15 00:37:04,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 00:37:04,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 00:37:04,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:37:04,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 00:37:04,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:37:04,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 00:37:04,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:37:04,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-15 00:37:04,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:37:04,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-02-15 00:37:04,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:37:04,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-02-15 00:37:04,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:37:04,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-02-15 00:37:04,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:37:04,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 00:37:04,255 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 00:37:04,256 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495653095] [2022-02-15 00:37:04,256 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [495653095] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 00:37:04,256 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 00:37:04,256 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-02-15 00:37:04,256 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297007696] [2022-02-15 00:37:04,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 00:37:04,256 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-02-15 00:37:04,256 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 00:37:04,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-02-15 00:37:04,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2022-02-15 00:37:04,257 INFO L87 Difference]: Start difference. First operand 796 states and 1083 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) [2022-02-15 00:37:07,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 00:37:07,056 INFO L93 Difference]: Finished difference Result 929 states and 1307 transitions. [2022-02-15 00:37:07,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-02-15 00:37:07,056 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 [2022-02-15 00:37:07,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 00:37:07,060 INFO L225 Difference]: With dead ends: 929 [2022-02-15 00:37:07,060 INFO L226 Difference]: Without dead ends: 914 [2022-02-15 00:37:07,060 INFO L932 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 [2022-02-15 00:37:07,060 INFO L933 BasicCegarLoop]: 670 mSDtfsCounter, 338 mSDsluCounter, 2128 mSDsCounter, 0 mSdLazyCounter, 5908 mSolverCounterSat, 138 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 340 SdHoareTripleChecker+Valid, 2798 SdHoareTripleChecker+Invalid, 6046 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 138 IncrementalHoareTripleChecker+Valid, 5908 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-02-15 00:37:07,060 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [340 Valid, 2798 Invalid, 6046 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [138 Valid, 5908 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-02-15 00:37:07,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 914 states. [2022-02-15 00:37:07,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 914 to 794. [2022-02-15 00:37:07,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 794 states, 621 states have (on average 1.3510466988727858) internal successors, (839), 633 states have internal predecessors, (839), 105 states have call successors, (105), 49 states have call predecessors, (105), 67 states have return successors, (135), 118 states have call predecessors, (135), 99 states have call successors, (135) [2022-02-15 00:37:07,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 794 states to 794 states and 1079 transitions. [2022-02-15 00:37:07,084 INFO L78 Accepts]: Start accepts. Automaton has 794 states and 1079 transitions. Word has length 56 [2022-02-15 00:37:07,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 00:37:07,084 INFO L470 AbstractCegarLoop]: Abstraction has 794 states and 1079 transitions. [2022-02-15 00:37:07,085 INFO L471 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) [2022-02-15 00:37:07,085 INFO L276 IsEmpty]: Start isEmpty. Operand 794 states and 1079 transitions. [2022-02-15 00:37:07,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-02-15 00:37:07,087 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 00:37:07,087 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 00:37:07,087 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-02-15 00:37:07,087 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 00:37:07,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 00:37:07,087 INFO L85 PathProgramCache]: Analyzing trace with hash -406359554, now seen corresponding path program 1 times [2022-02-15 00:37:07,088 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 00:37:07,088 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612309670] [2022-02-15 00:37:07,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 00:37:07,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 00:37:07,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:37:07,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 00:37:07,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:37:07,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 00:37:07,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:37:07,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-15 00:37:07,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:37:07,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-02-15 00:37:07,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:37:07,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-02-15 00:37:07,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:37:07,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-02-15 00:37:07,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:37:07,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 00:37:07,255 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 00:37:07,255 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612309670] [2022-02-15 00:37:07,255 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1612309670] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 00:37:07,255 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 00:37:07,256 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-02-15 00:37:07,256 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895227653] [2022-02-15 00:37:07,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 00:37:07,256 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-02-15 00:37:07,258 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 00:37:07,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-02-15 00:37:07,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2022-02-15 00:37:07,258 INFO L87 Difference]: Start difference. First operand 794 states and 1079 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) [2022-02-15 00:37:09,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 00:37:09,627 INFO L93 Difference]: Finished difference Result 924 states and 1300 transitions. [2022-02-15 00:37:09,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-02-15 00:37:09,627 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 [2022-02-15 00:37:09,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 00:37:09,629 INFO L225 Difference]: With dead ends: 924 [2022-02-15 00:37:09,629 INFO L226 Difference]: Without dead ends: 909 [2022-02-15 00:37:09,630 INFO L932 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 [2022-02-15 00:37:09,630 INFO L933 BasicCegarLoop]: 654 mSDtfsCounter, 975 mSDsluCounter, 2004 mSDsCounter, 0 mSdLazyCounter, 5422 mSolverCounterSat, 398 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 977 SdHoareTripleChecker+Valid, 2658 SdHoareTripleChecker+Invalid, 5820 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 398 IncrementalHoareTripleChecker+Valid, 5422 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-02-15 00:37:09,630 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [977 Valid, 2658 Invalid, 5820 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [398 Valid, 5422 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-02-15 00:37:09,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 909 states. [2022-02-15 00:37:09,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 909 to 789. [2022-02-15 00:37:09,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 789 states, 618 states have (on average 1.3511326860841424) internal successors, (835), 630 states have internal predecessors, (835), 104 states have call successors, (104), 49 states have call predecessors, (104), 66 states have return successors, (133), 116 states have call predecessors, (133), 98 states have call successors, (133) [2022-02-15 00:37:09,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 789 states to 789 states and 1072 transitions. [2022-02-15 00:37:09,641 INFO L78 Accepts]: Start accepts. Automaton has 789 states and 1072 transitions. Word has length 55 [2022-02-15 00:37:09,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 00:37:09,641 INFO L470 AbstractCegarLoop]: Abstraction has 789 states and 1072 transitions. [2022-02-15 00:37:09,641 INFO L471 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) [2022-02-15 00:37:09,641 INFO L276 IsEmpty]: Start isEmpty. Operand 789 states and 1072 transitions. [2022-02-15 00:37:09,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-02-15 00:37:09,643 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 00:37:09,643 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 00:37:09,643 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-02-15 00:37:09,643 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 00:37:09,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 00:37:09,643 INFO L85 PathProgramCache]: Analyzing trace with hash 301163047, now seen corresponding path program 1 times [2022-02-15 00:37:09,643 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 00:37:09,643 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467213789] [2022-02-15 00:37:09,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 00:37:09,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 00:37:09,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:37:09,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 00:37:09,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:37:09,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 00:37:09,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:37:09,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-15 00:37:09,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:37:09,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-02-15 00:37:09,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:37:09,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-02-15 00:37:09,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:37:09,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-02-15 00:37:09,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:37:09,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 00:37:09,771 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 00:37:09,771 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467213789] [2022-02-15 00:37:09,771 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1467213789] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 00:37:09,771 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 00:37:09,771 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-02-15 00:37:09,771 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13078297] [2022-02-15 00:37:09,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 00:37:09,772 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-02-15 00:37:09,772 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 00:37:09,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-02-15 00:37:09,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-02-15 00:37:09,772 INFO L87 Difference]: Start difference. First operand 789 states and 1072 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) [2022-02-15 00:37:11,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 00:37:11,004 INFO L93 Difference]: Finished difference Result 931 states and 1303 transitions. [2022-02-15 00:37:11,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-02-15 00:37:11,004 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 [2022-02-15 00:37:11,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 00:37:11,007 INFO L225 Difference]: With dead ends: 931 [2022-02-15 00:37:11,007 INFO L226 Difference]: Without dead ends: 931 [2022-02-15 00:37:11,007 INFO L932 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 [2022-02-15 00:37:11,007 INFO L933 BasicCegarLoop]: 675 mSDtfsCounter, 2591 mSDsluCounter, 488 mSDsCounter, 0 mSdLazyCounter, 876 mSolverCounterSat, 776 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2601 SdHoareTripleChecker+Valid, 1163 SdHoareTripleChecker+Invalid, 1652 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 776 IncrementalHoareTripleChecker+Valid, 876 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-02-15 00:37:11,007 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2601 Valid, 1163 Invalid, 1652 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [776 Valid, 876 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-02-15 00:37:11,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 931 states. [2022-02-15 00:37:11,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 931 to 789. [2022-02-15 00:37:11,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 789 states, 618 states have (on average 1.3495145631067962) internal successors, (834), 630 states have internal predecessors, (834), 104 states have call successors, (104), 49 states have call predecessors, (104), 66 states have return successors, (133), 116 states have call predecessors, (133), 98 states have call successors, (133) [2022-02-15 00:37:11,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 789 states to 789 states and 1071 transitions. [2022-02-15 00:37:11,018 INFO L78 Accepts]: Start accepts. Automaton has 789 states and 1071 transitions. Word has length 56 [2022-02-15 00:37:11,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 00:37:11,018 INFO L470 AbstractCegarLoop]: Abstraction has 789 states and 1071 transitions. [2022-02-15 00:37:11,019 INFO L471 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) [2022-02-15 00:37:11,019 INFO L276 IsEmpty]: Start isEmpty. Operand 789 states and 1071 transitions. [2022-02-15 00:37:11,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-02-15 00:37:11,020 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 00:37:11,020 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 00:37:11,020 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-02-15 00:37:11,020 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 00:37:11,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 00:37:11,020 INFO L85 PathProgramCache]: Analyzing trace with hash -664547493, now seen corresponding path program 1 times [2022-02-15 00:37:11,020 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 00:37:11,021 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263808531] [2022-02-15 00:37:11,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 00:37:11,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 00:37:11,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:37:11,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 00:37:11,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:37:11,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 00:37:11,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:37:11,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-15 00:37:11,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:37:11,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-02-15 00:37:11,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:37:11,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-02-15 00:37:11,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:37:11,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 00:37:11,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:37:11,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 00:37:11,146 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 00:37:11,146 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263808531] [2022-02-15 00:37:11,146 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [263808531] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 00:37:11,146 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 00:37:11,146 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-02-15 00:37:11,146 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665594902] [2022-02-15 00:37:11,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 00:37:11,147 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-15 00:37:11,147 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 00:37:11,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-15 00:37:11,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-02-15 00:37:11,147 INFO L87 Difference]: Start difference. First operand 789 states and 1071 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) [2022-02-15 00:37:12,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 00:37:12,230 INFO L93 Difference]: Finished difference Result 1013 states and 1405 transitions. [2022-02-15 00:37:12,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-02-15 00:37:12,230 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 [2022-02-15 00:37:12,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 00:37:12,237 INFO L225 Difference]: With dead ends: 1013 [2022-02-15 00:37:12,237 INFO L226 Difference]: Without dead ends: 1013 [2022-02-15 00:37:12,237 INFO L932 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 [2022-02-15 00:37:12,238 INFO L933 BasicCegarLoop]: 660 mSDtfsCounter, 1307 mSDsluCounter, 487 mSDsCounter, 0 mSdLazyCounter, 825 mSolverCounterSat, 493 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1329 SdHoareTripleChecker+Valid, 1147 SdHoareTripleChecker+Invalid, 1318 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 493 IncrementalHoareTripleChecker+Valid, 825 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-02-15 00:37:12,238 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1329 Valid, 1147 Invalid, 1318 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [493 Valid, 825 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-02-15 00:37:12,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1013 states. [2022-02-15 00:37:12,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1013 to 830. [2022-02-15 00:37:12,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 830 states, 651 states have (on average 1.337941628264209) internal successors, (871), 662 states have internal predecessors, (871), 105 states have call successors, (105), 53 states have call predecessors, (105), 73 states have return successors, (135), 121 states have call predecessors, (135), 100 states have call successors, (135) [2022-02-15 00:37:12,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 830 states to 830 states and 1111 transitions. [2022-02-15 00:37:12,269 INFO L78 Accepts]: Start accepts. Automaton has 830 states and 1111 transitions. Word has length 61 [2022-02-15 00:37:12,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 00:37:12,269 INFO L470 AbstractCegarLoop]: Abstraction has 830 states and 1111 transitions. [2022-02-15 00:37:12,269 INFO L471 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) [2022-02-15 00:37:12,269 INFO L276 IsEmpty]: Start isEmpty. Operand 830 states and 1111 transitions. [2022-02-15 00:37:12,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-02-15 00:37:12,271 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 00:37:12,271 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 00:37:12,271 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-02-15 00:37:12,271 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 00:37:12,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 00:37:12,272 INFO L85 PathProgramCache]: Analyzing trace with hash -917115183, now seen corresponding path program 1 times [2022-02-15 00:37:12,272 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 00:37:12,272 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835778911] [2022-02-15 00:37:12,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 00:37:12,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 00:37:12,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:37:12,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 00:37:12,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:37:12,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 00:37:12,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:37:12,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-15 00:37:12,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:37:12,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-02-15 00:37:12,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:37:12,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-15 00:37:12,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:37:12,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-02-15 00:37:12,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:37:12,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-02-15 00:37:12,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:37:12,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 00:37:12,530 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 00:37:12,531 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [835778911] [2022-02-15 00:37:12,531 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [835778911] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 00:37:12,531 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 00:37:12,531 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-02-15 00:37:12,531 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698993339] [2022-02-15 00:37:12,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 00:37:12,532 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-02-15 00:37:12,532 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 00:37:12,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-02-15 00:37:12,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=327, Unknown=0, NotChecked=0, Total=380 [2022-02-15 00:37:12,533 INFO L87 Difference]: Start difference. First operand 830 states and 1111 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) [2022-02-15 00:37:15,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 00:37:15,494 INFO L93 Difference]: Finished difference Result 995 states and 1380 transitions. [2022-02-15 00:37:15,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-02-15 00:37:15,494 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 [2022-02-15 00:37:15,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 00:37:15,501 INFO L225 Difference]: With dead ends: 995 [2022-02-15 00:37:15,501 INFO L226 Difference]: Without dead ends: 972 [2022-02-15 00:37:15,501 INFO L932 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 [2022-02-15 00:37:15,502 INFO L933 BasicCegarLoop]: 634 mSDtfsCounter, 1310 mSDsluCounter, 2941 mSDsCounter, 0 mSdLazyCounter, 6995 mSolverCounterSat, 544 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1314 SdHoareTripleChecker+Valid, 3575 SdHoareTripleChecker+Invalid, 7539 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 544 IncrementalHoareTripleChecker+Valid, 6995 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-02-15 00:37:15,503 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1314 Valid, 3575 Invalid, 7539 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [544 Valid, 6995 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-02-15 00:37:15,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 972 states. [2022-02-15 00:37:15,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 972 to 829. [2022-02-15 00:37:15,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 829 states, 650 states have (on average 1.323076923076923) internal successors, (860), 661 states have internal predecessors, (860), 105 states have call successors, (105), 53 states have call predecessors, (105), 73 states have return successors, (135), 121 states have call predecessors, (135), 100 states have call successors, (135) [2022-02-15 00:37:15,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 829 states to 829 states and 1100 transitions. [2022-02-15 00:37:15,516 INFO L78 Accepts]: Start accepts. Automaton has 829 states and 1100 transitions. Word has length 59 [2022-02-15 00:37:15,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 00:37:15,516 INFO L470 AbstractCegarLoop]: Abstraction has 829 states and 1100 transitions. [2022-02-15 00:37:15,516 INFO L471 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) [2022-02-15 00:37:15,516 INFO L276 IsEmpty]: Start isEmpty. Operand 829 states and 1100 transitions. [2022-02-15 00:37:15,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-02-15 00:37:15,517 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 00:37:15,518 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 00:37:15,518 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-02-15 00:37:15,518 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 00:37:15,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 00:37:15,518 INFO L85 PathProgramCache]: Analyzing trace with hash 1794647803, now seen corresponding path program 1 times [2022-02-15 00:37:15,518 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 00:37:15,518 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107770094] [2022-02-15 00:37:15,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 00:37:15,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 00:37:15,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:37:15,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 00:37:15,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:37:15,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 00:37:15,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:37:15,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-15 00:37:15,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:37:15,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-02-15 00:37:15,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:37:15,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 00:37:15,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:37:15,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-02-15 00:37:15,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:37:15,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 00:37:15,758 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 00:37:15,758 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107770094] [2022-02-15 00:37:15,758 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1107770094] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 00:37:15,758 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 00:37:15,758 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-02-15 00:37:15,759 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058674070] [2022-02-15 00:37:15,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 00:37:15,759 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-02-15 00:37:15,759 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 00:37:15,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-02-15 00:37:15,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2022-02-15 00:37:15,759 INFO L87 Difference]: Start difference. First operand 829 states and 1100 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) [2022-02-15 00:37:18,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 00:37:18,361 INFO L93 Difference]: Finished difference Result 984 states and 1354 transitions. [2022-02-15 00:37:18,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-02-15 00:37:18,361 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 [2022-02-15 00:37:18,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 00:37:18,367 INFO L225 Difference]: With dead ends: 984 [2022-02-15 00:37:18,367 INFO L226 Difference]: Without dead ends: 967 [2022-02-15 00:37:18,367 INFO L932 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 [2022-02-15 00:37:18,368 INFO L933 BasicCegarLoop]: 650 mSDtfsCounter, 630 mSDsluCounter, 2305 mSDsCounter, 0 mSdLazyCounter, 5813 mSolverCounterSat, 262 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 632 SdHoareTripleChecker+Valid, 2955 SdHoareTripleChecker+Invalid, 6075 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 262 IncrementalHoareTripleChecker+Valid, 5813 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-02-15 00:37:18,368 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [632 Valid, 2955 Invalid, 6075 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [262 Valid, 5813 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-02-15 00:37:18,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 967 states. [2022-02-15 00:37:18,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 967 to 826. [2022-02-15 00:37:18,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 826 states, 648 states have (on average 1.3225308641975309) internal successors, (857), 659 states have internal predecessors, (857), 104 states have call successors, (104), 53 states have call predecessors, (104), 73 states have return successors, (134), 120 states have call predecessors, (134), 99 states have call successors, (134) [2022-02-15 00:37:18,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 826 states to 826 states and 1095 transitions. [2022-02-15 00:37:18,390 INFO L78 Accepts]: Start accepts. Automaton has 826 states and 1095 transitions. Word has length 58 [2022-02-15 00:37:18,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 00:37:18,391 INFO L470 AbstractCegarLoop]: Abstraction has 826 states and 1095 transitions. [2022-02-15 00:37:18,391 INFO L471 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) [2022-02-15 00:37:18,391 INFO L276 IsEmpty]: Start isEmpty. Operand 826 states and 1095 transitions. [2022-02-15 00:37:18,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-02-15 00:37:18,393 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 00:37:18,393 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 00:37:18,393 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-02-15 00:37:18,393 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 00:37:18,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 00:37:18,394 INFO L85 PathProgramCache]: Analyzing trace with hash 1644249478, now seen corresponding path program 1 times [2022-02-15 00:37:18,394 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 00:37:18,394 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953487241] [2022-02-15 00:37:18,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 00:37:18,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 00:37:18,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:37:18,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 00:37:18,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:37:18,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 00:37:18,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:37:18,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-15 00:37:18,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:37:18,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-02-15 00:37:18,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:37:18,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-02-15 00:37:18,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:37:18,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-02-15 00:37:18,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:37:18,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 00:37:18,567 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 00:37:18,567 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953487241] [2022-02-15 00:37:18,568 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1953487241] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 00:37:18,568 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 00:37:18,568 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-02-15 00:37:18,568 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583588086] [2022-02-15 00:37:18,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 00:37:18,568 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-02-15 00:37:18,568 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 00:37:18,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-02-15 00:37:18,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2022-02-15 00:37:18,569 INFO L87 Difference]: Start difference. First operand 826 states and 1095 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) [2022-02-15 00:37:20,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 00:37:20,838 INFO L93 Difference]: Finished difference Result 988 states and 1355 transitions. [2022-02-15 00:37:20,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-02-15 00:37:20,839 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 [2022-02-15 00:37:20,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 00:37:20,841 INFO L225 Difference]: With dead ends: 988 [2022-02-15 00:37:20,841 INFO L226 Difference]: Without dead ends: 952 [2022-02-15 00:37:20,841 INFO L932 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 [2022-02-15 00:37:20,841 INFO L933 BasicCegarLoop]: 626 mSDtfsCounter, 664 mSDsluCounter, 2160 mSDsCounter, 0 mSdLazyCounter, 5039 mSolverCounterSat, 283 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 668 SdHoareTripleChecker+Valid, 2786 SdHoareTripleChecker+Invalid, 5322 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 283 IncrementalHoareTripleChecker+Valid, 5039 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-02-15 00:37:20,841 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [668 Valid, 2786 Invalid, 5322 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [283 Valid, 5039 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-02-15 00:37:20,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 952 states. [2022-02-15 00:37:20,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 952 to 814. [2022-02-15 00:37:20,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 814 states, 639 states have (on average 1.3176838810641627) internal successors, (842), 650 states have internal predecessors, (842), 101 states have call successors, (101), 53 states have call predecessors, (101), 73 states have return successors, (131), 117 states have call predecessors, (131), 96 states have call successors, (131) [2022-02-15 00:37:20,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 814 states to 814 states and 1074 transitions. [2022-02-15 00:37:20,851 INFO L78 Accepts]: Start accepts. Automaton has 814 states and 1074 transitions. Word has length 59 [2022-02-15 00:37:20,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 00:37:20,852 INFO L470 AbstractCegarLoop]: Abstraction has 814 states and 1074 transitions. [2022-02-15 00:37:20,852 INFO L471 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) [2022-02-15 00:37:20,852 INFO L276 IsEmpty]: Start isEmpty. Operand 814 states and 1074 transitions. [2022-02-15 00:37:20,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-02-15 00:37:20,853 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 00:37:20,853 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 00:37:20,853 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-02-15 00:37:20,853 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 00:37:20,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 00:37:20,854 INFO L85 PathProgramCache]: Analyzing trace with hash -887424146, now seen corresponding path program 1 times [2022-02-15 00:37:20,854 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 00:37:20,854 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427166422] [2022-02-15 00:37:20,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 00:37:20,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 00:37:20,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:37:20,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 00:37:20,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:37:20,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 00:37:20,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:37:20,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-15 00:37:20,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:37:20,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-02-15 00:37:20,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:37:20,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-02-15 00:37:20,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:37:20,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-15 00:37:20,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:37:20,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-02-15 00:37:20,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:37:20,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 00:37:20,991 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 00:37:20,991 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427166422] [2022-02-15 00:37:20,991 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1427166422] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 00:37:20,991 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 00:37:20,992 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-02-15 00:37:20,992 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182233376] [2022-02-15 00:37:20,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 00:37:20,992 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-02-15 00:37:20,992 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 00:37:20,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-02-15 00:37:20,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-02-15 00:37:20,992 INFO L87 Difference]: Start difference. First operand 814 states and 1074 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) [2022-02-15 00:37:22,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 00:37:22,657 INFO L93 Difference]: Finished difference Result 1013 states and 1412 transitions. [2022-02-15 00:37:22,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-02-15 00:37:22,657 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 [2022-02-15 00:37:22,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 00:37:22,660 INFO L225 Difference]: With dead ends: 1013 [2022-02-15 00:37:22,660 INFO L226 Difference]: Without dead ends: 1013 [2022-02-15 00:37:22,660 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2022-02-15 00:37:22,661 INFO L933 BasicCegarLoop]: 609 mSDtfsCounter, 369 mSDsluCounter, 1168 mSDsCounter, 0 mSdLazyCounter, 2211 mSolverCounterSat, 165 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 371 SdHoareTripleChecker+Valid, 1777 SdHoareTripleChecker+Invalid, 2376 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 165 IncrementalHoareTripleChecker+Valid, 2211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-02-15 00:37:22,661 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [371 Valid, 1777 Invalid, 2376 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [165 Valid, 2211 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-02-15 00:37:22,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1013 states. [2022-02-15 00:37:22,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1013 to 821. [2022-02-15 00:37:22,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 821 states, 644 states have (on average 1.3183229813664596) internal successors, (849), 656 states have internal predecessors, (849), 102 states have call successors, (102), 53 states have call predecessors, (102), 74 states have return successors, (138), 118 states have call predecessors, (138), 97 states have call successors, (138) [2022-02-15 00:37:22,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 821 states to 821 states and 1089 transitions. [2022-02-15 00:37:22,671 INFO L78 Accepts]: Start accepts. Automaton has 821 states and 1089 transitions. Word has length 60 [2022-02-15 00:37:22,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 00:37:22,672 INFO L470 AbstractCegarLoop]: Abstraction has 821 states and 1089 transitions. [2022-02-15 00:37:22,672 INFO L471 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) [2022-02-15 00:37:22,672 INFO L276 IsEmpty]: Start isEmpty. Operand 821 states and 1089 transitions. [2022-02-15 00:37:22,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-02-15 00:37:22,673 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 00:37:22,674 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 00:37:22,674 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-02-15 00:37:22,674 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 00:37:22,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 00:37:22,674 INFO L85 PathProgramCache]: Analyzing trace with hash 1397439309, now seen corresponding path program 1 times [2022-02-15 00:37:22,674 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 00:37:22,674 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899152935] [2022-02-15 00:37:22,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 00:37:22,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 00:37:22,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:37:22,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 00:37:22,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:37:22,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 00:37:22,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:37:22,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-15 00:37:22,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:37:22,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-02-15 00:37:22,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:37:22,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-02-15 00:37:22,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:37:22,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-15 00:37:22,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:37:22,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-02-15 00:37:22,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:37:22,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 00:37:22,853 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 00:37:22,853 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899152935] [2022-02-15 00:37:22,853 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1899152935] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 00:37:22,853 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 00:37:22,853 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-02-15 00:37:22,854 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955022311] [2022-02-15 00:37:22,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 00:37:22,854 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-02-15 00:37:22,854 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 00:37:22,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-02-15 00:37:22,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2022-02-15 00:37:22,854 INFO L87 Difference]: Start difference. First operand 821 states and 1089 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) [2022-02-15 00:37:24,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 00:37:24,662 INFO L93 Difference]: Finished difference Result 982 states and 1358 transitions. [2022-02-15 00:37:24,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-02-15 00:37:24,662 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 [2022-02-15 00:37:24,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 00:37:24,665 INFO L225 Difference]: With dead ends: 982 [2022-02-15 00:37:24,665 INFO L226 Difference]: Without dead ends: 960 [2022-02-15 00:37:24,665 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2022-02-15 00:37:24,665 INFO L933 BasicCegarLoop]: 631 mSDtfsCounter, 688 mSDsluCounter, 1881 mSDsCounter, 0 mSdLazyCounter, 3896 mSolverCounterSat, 260 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 691 SdHoareTripleChecker+Valid, 2512 SdHoareTripleChecker+Invalid, 4156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 260 IncrementalHoareTripleChecker+Valid, 3896 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-02-15 00:37:24,665 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [691 Valid, 2512 Invalid, 4156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [260 Valid, 3896 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-02-15 00:37:24,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 960 states. [2022-02-15 00:37:24,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 960 to 819. [2022-02-15 00:37:24,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 819 states, 643 states have (on average 1.317262830482115) internal successors, (847), 655 states have internal predecessors, (847), 101 states have call successors, (101), 53 states have call predecessors, (101), 74 states have return successors, (137), 117 states have call predecessors, (137), 96 states have call successors, (137) [2022-02-15 00:37:24,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 819 states to 819 states and 1085 transitions. [2022-02-15 00:37:24,678 INFO L78 Accepts]: Start accepts. Automaton has 819 states and 1085 transitions. Word has length 60 [2022-02-15 00:37:24,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 00:37:24,678 INFO L470 AbstractCegarLoop]: Abstraction has 819 states and 1085 transitions. [2022-02-15 00:37:24,678 INFO L471 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) [2022-02-15 00:37:24,678 INFO L276 IsEmpty]: Start isEmpty. Operand 819 states and 1085 transitions. [2022-02-15 00:37:24,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-02-15 00:37:24,679 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 00:37:24,680 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 00:37:24,680 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-02-15 00:37:24,680 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 00:37:24,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 00:37:24,680 INFO L85 PathProgramCache]: Analyzing trace with hash 303583592, now seen corresponding path program 1 times [2022-02-15 00:37:24,680 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 00:37:24,680 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273074399] [2022-02-15 00:37:24,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 00:37:24,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 00:37:24,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:37:24,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 00:37:24,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:37:24,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 00:37:24,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:37:24,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-15 00:37:24,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:37:24,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-02-15 00:37:24,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:37:24,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-02-15 00:37:24,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:37:24,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-02-15 00:37:24,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:37:24,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 00:37:24,840 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 00:37:24,840 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273074399] [2022-02-15 00:37:24,841 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [273074399] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 00:37:24,841 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 00:37:24,841 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-02-15 00:37:24,841 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210193342] [2022-02-15 00:37:24,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 00:37:24,841 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-02-15 00:37:24,841 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 00:37:24,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-02-15 00:37:24,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2022-02-15 00:37:24,842 INFO L87 Difference]: Start difference. First operand 819 states and 1085 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) [2022-02-15 00:37:26,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 00:37:26,603 INFO L93 Difference]: Finished difference Result 962 states and 1332 transitions. [2022-02-15 00:37:26,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-02-15 00:37:26,604 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 [2022-02-15 00:37:26,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 00:37:26,606 INFO L225 Difference]: With dead ends: 962 [2022-02-15 00:37:26,606 INFO L226 Difference]: Without dead ends: 962 [2022-02-15 00:37:26,606 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2022-02-15 00:37:26,606 INFO L933 BasicCegarLoop]: 610 mSDtfsCounter, 330 mSDsluCounter, 1129 mSDsCounter, 0 mSdLazyCounter, 2860 mSolverCounterSat, 130 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 332 SdHoareTripleChecker+Valid, 1739 SdHoareTripleChecker+Invalid, 2990 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 130 IncrementalHoareTripleChecker+Valid, 2860 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-02-15 00:37:26,607 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [332 Valid, 1739 Invalid, 2990 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [130 Valid, 2860 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-02-15 00:37:26,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 962 states. [2022-02-15 00:37:26,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 962 to 819. [2022-02-15 00:37:26,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 819 states, 643 states have (on average 1.3157076205287714) internal successors, (846), 655 states have internal predecessors, (846), 101 states have call successors, (101), 53 states have call predecessors, (101), 74 states have return successors, (137), 117 states have call predecessors, (137), 96 states have call successors, (137) [2022-02-15 00:37:26,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 819 states to 819 states and 1084 transitions. [2022-02-15 00:37:26,619 INFO L78 Accepts]: Start accepts. Automaton has 819 states and 1084 transitions. Word has length 60 [2022-02-15 00:37:26,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 00:37:26,619 INFO L470 AbstractCegarLoop]: Abstraction has 819 states and 1084 transitions. [2022-02-15 00:37:26,619 INFO L471 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) [2022-02-15 00:37:26,619 INFO L276 IsEmpty]: Start isEmpty. Operand 819 states and 1084 transitions. [2022-02-15 00:37:26,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-02-15 00:37:26,620 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 00:37:26,620 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 00:37:26,621 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-02-15 00:37:26,621 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 00:37:26,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 00:37:26,621 INFO L85 PathProgramCache]: Analyzing trace with hash 48847047, now seen corresponding path program 1 times [2022-02-15 00:37:26,621 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 00:37:26,621 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089233863] [2022-02-15 00:37:26,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 00:37:26,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 00:37:26,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:37:26,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 00:37:26,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:37:26,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 00:37:26,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:37:26,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-15 00:37:26,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:37:26,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-02-15 00:37:26,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:37:26,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-02-15 00:37:26,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:37:26,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-02-15 00:37:26,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:37:26,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 00:37:26,816 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 00:37:26,816 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089233863] [2022-02-15 00:37:26,816 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1089233863] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 00:37:26,816 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 00:37:26,816 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-02-15 00:37:26,816 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555345063] [2022-02-15 00:37:26,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 00:37:26,816 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-02-15 00:37:26,816 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 00:37:26,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-02-15 00:37:26,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2022-02-15 00:37:26,817 INFO L87 Difference]: Start difference. First operand 819 states and 1084 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) [2022-02-15 00:37:28,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 00:37:28,799 INFO L93 Difference]: Finished difference Result 998 states and 1379 transitions. [2022-02-15 00:37:28,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-02-15 00:37:28,799 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 [2022-02-15 00:37:28,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 00:37:28,801 INFO L225 Difference]: With dead ends: 998 [2022-02-15 00:37:28,801 INFO L226 Difference]: Without dead ends: 949 [2022-02-15 00:37:28,802 INFO L932 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 [2022-02-15 00:37:28,804 INFO L933 BasicCegarLoop]: 628 mSDtfsCounter, 670 mSDsluCounter, 2223 mSDsCounter, 0 mSdLazyCounter, 4235 mSolverCounterSat, 269 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 675 SdHoareTripleChecker+Valid, 2851 SdHoareTripleChecker+Invalid, 4504 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 269 IncrementalHoareTripleChecker+Valid, 4235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-02-15 00:37:28,804 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [675 Valid, 2851 Invalid, 4504 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [269 Valid, 4235 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-02-15 00:37:28,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 949 states. [2022-02-15 00:37:28,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 949 to 811. [2022-02-15 00:37:28,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 811 states, 637 states have (on average 1.3108320251177394) internal successors, (835), 649 states have internal predecessors, (835), 99 states have call successors, (99), 53 states have call predecessors, (99), 74 states have return successors, (135), 115 states have call predecessors, (135), 94 states have call successors, (135) [2022-02-15 00:37:28,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 811 states to 811 states and 1069 transitions. [2022-02-15 00:37:28,818 INFO L78 Accepts]: Start accepts. Automaton has 811 states and 1069 transitions. Word has length 60 [2022-02-15 00:37:28,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 00:37:28,818 INFO L470 AbstractCegarLoop]: Abstraction has 811 states and 1069 transitions. [2022-02-15 00:37:28,818 INFO L471 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) [2022-02-15 00:37:28,818 INFO L276 IsEmpty]: Start isEmpty. Operand 811 states and 1069 transitions. [2022-02-15 00:37:28,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-02-15 00:37:28,820 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 00:37:28,820 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 00:37:28,820 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-02-15 00:37:28,820 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 00:37:28,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 00:37:28,821 INFO L85 PathProgramCache]: Analyzing trace with hash 330565666, now seen corresponding path program 1 times [2022-02-15 00:37:28,821 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 00:37:28,821 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620968143] [2022-02-15 00:37:28,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 00:37:28,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 00:37:28,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:37:28,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 00:37:28,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:37:28,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 00:37:28,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:37:28,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-15 00:37:28,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:37:28,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-02-15 00:37:28,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:37:28,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-02-15 00:37:28,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:37:28,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-15 00:37:28,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:37:28,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-02-15 00:37:28,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:37:28,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 00:37:28,959 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 00:37:28,959 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [620968143] [2022-02-15 00:37:28,959 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [620968143] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 00:37:28,959 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 00:37:28,960 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-02-15 00:37:28,960 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750824581] [2022-02-15 00:37:28,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 00:37:28,960 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-02-15 00:37:28,960 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 00:37:28,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-02-15 00:37:28,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2022-02-15 00:37:28,960 INFO L87 Difference]: Start difference. First operand 811 states and 1069 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) [2022-02-15 00:37:30,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 00:37:30,633 INFO L93 Difference]: Finished difference Result 965 states and 1350 transitions. [2022-02-15 00:37:30,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-02-15 00:37:30,634 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 [2022-02-15 00:37:30,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 00:37:30,636 INFO L225 Difference]: With dead ends: 965 [2022-02-15 00:37:30,636 INFO L226 Difference]: Without dead ends: 963 [2022-02-15 00:37:30,636 INFO L932 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 [2022-02-15 00:37:30,637 INFO L933 BasicCegarLoop]: 591 mSDtfsCounter, 346 mSDsluCounter, 1170 mSDsCounter, 0 mSdLazyCounter, 2367 mSolverCounterSat, 146 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 348 SdHoareTripleChecker+Valid, 1761 SdHoareTripleChecker+Invalid, 2513 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 146 IncrementalHoareTripleChecker+Valid, 2367 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-02-15 00:37:30,637 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [348 Valid, 1761 Invalid, 2513 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [146 Valid, 2367 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-02-15 00:37:30,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 963 states. [2022-02-15 00:37:30,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 963 to 815. [2022-02-15 00:37:30,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 815 states, 639 states have (on average 1.3098591549295775) internal successors, (837), 653 states have internal predecessors, (837), 99 states have call successors, (99), 53 states have call predecessors, (99), 76 states have return successors, (151), 115 states have call predecessors, (151), 94 states have call successors, (151) [2022-02-15 00:37:30,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 815 states to 815 states and 1087 transitions. [2022-02-15 00:37:30,648 INFO L78 Accepts]: Start accepts. Automaton has 815 states and 1087 transitions. Word has length 61 [2022-02-15 00:37:30,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 00:37:30,648 INFO L470 AbstractCegarLoop]: Abstraction has 815 states and 1087 transitions. [2022-02-15 00:37:30,648 INFO L471 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) [2022-02-15 00:37:30,648 INFO L276 IsEmpty]: Start isEmpty. Operand 815 states and 1087 transitions. [2022-02-15 00:37:30,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-02-15 00:37:30,649 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 00:37:30,649 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 00:37:30,650 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-02-15 00:37:30,650 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 00:37:30,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 00:37:30,650 INFO L85 PathProgramCache]: Analyzing trace with hash -1749867339, now seen corresponding path program 1 times [2022-02-15 00:37:30,650 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 00:37:30,650 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [475928925] [2022-02-15 00:37:30,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 00:37:30,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 00:37:30,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:37:30,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 00:37:30,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:37:30,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 00:37:30,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:37:30,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-15 00:37:30,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:37:30,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-02-15 00:37:30,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:37:30,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-15 00:37:30,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:37:30,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-02-15 00:37:30,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:37:30,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-02-15 00:37:30,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:37:30,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 00:37:30,904 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 00:37:30,904 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [475928925] [2022-02-15 00:37:30,904 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [475928925] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 00:37:30,904 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 00:37:30,904 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-02-15 00:37:30,904 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633747121] [2022-02-15 00:37:30,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 00:37:30,904 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-02-15 00:37:30,905 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 00:37:30,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-02-15 00:37:30,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=327, Unknown=0, NotChecked=0, Total=380 [2022-02-15 00:37:30,905 INFO L87 Difference]: Start difference. First operand 815 states and 1087 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) [2022-02-15 00:37:33,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 00:37:33,265 INFO L93 Difference]: Finished difference Result 974 states and 1352 transitions. [2022-02-15 00:37:33,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-02-15 00:37:33,265 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 [2022-02-15 00:37:33,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 00:37:33,267 INFO L225 Difference]: With dead ends: 974 [2022-02-15 00:37:33,267 INFO L226 Difference]: Without dead ends: 953 [2022-02-15 00:37:33,268 INFO L932 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 [2022-02-15 00:37:33,268 INFO L933 BasicCegarLoop]: 571 mSDtfsCounter, 1504 mSDsluCounter, 2347 mSDsCounter, 0 mSdLazyCounter, 5333 mSolverCounterSat, 625 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1509 SdHoareTripleChecker+Valid, 2918 SdHoareTripleChecker+Invalid, 5958 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 625 IncrementalHoareTripleChecker+Valid, 5333 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-02-15 00:37:33,268 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1509 Valid, 2918 Invalid, 5958 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [625 Valid, 5333 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-02-15 00:37:33,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 953 states. [2022-02-15 00:37:33,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 953 to 813. [2022-02-15 00:37:33,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 813 states, 638 states have (on average 1.3087774294670846) internal successors, (835), 652 states have internal predecessors, (835), 98 states have call successors, (98), 53 states have call predecessors, (98), 76 states have return successors, (150), 114 states have call predecessors, (150), 93 states have call successors, (150) [2022-02-15 00:37:33,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 813 states to 813 states and 1083 transitions. [2022-02-15 00:37:33,278 INFO L78 Accepts]: Start accepts. Automaton has 813 states and 1083 transitions. Word has length 62 [2022-02-15 00:37:33,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 00:37:33,278 INFO L470 AbstractCegarLoop]: Abstraction has 813 states and 1083 transitions. [2022-02-15 00:37:33,278 INFO L471 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) [2022-02-15 00:37:33,278 INFO L276 IsEmpty]: Start isEmpty. Operand 813 states and 1083 transitions. [2022-02-15 00:37:33,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-02-15 00:37:33,280 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 00:37:33,280 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 00:37:33,280 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-02-15 00:37:33,280 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 00:37:33,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 00:37:33,280 INFO L85 PathProgramCache]: Analyzing trace with hash -2020935180, now seen corresponding path program 1 times [2022-02-15 00:37:33,280 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 00:37:33,280 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770046210] [2022-02-15 00:37:33,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 00:37:33,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 00:37:33,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:37:33,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 00:37:33,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:37:33,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 00:37:33,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:37:33,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-15 00:37:33,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:37:33,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-02-15 00:37:33,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:37:33,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-02-15 00:37:33,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:37:33,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-15 00:37:33,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:37:33,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-02-15 00:37:33,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:37:33,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 00:37:33,512 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 00:37:33,512 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770046210] [2022-02-15 00:37:33,512 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [770046210] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 00:37:33,512 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 00:37:33,512 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-02-15 00:37:33,513 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009003635] [2022-02-15 00:37:33,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 00:37:33,513 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-02-15 00:37:33,513 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 00:37:33,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-02-15 00:37:33,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=296, Unknown=0, NotChecked=0, Total=342 [2022-02-15 00:37:33,513 INFO L87 Difference]: Start difference. First operand 813 states and 1083 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) [2022-02-15 00:37:35,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 00:37:35,501 INFO L93 Difference]: Finished difference Result 965 states and 1341 transitions. [2022-02-15 00:37:35,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-02-15 00:37:35,502 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 [2022-02-15 00:37:35,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 00:37:35,504 INFO L225 Difference]: With dead ends: 965 [2022-02-15 00:37:35,504 INFO L226 Difference]: Without dead ends: 946 [2022-02-15 00:37:35,505 INFO L932 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 [2022-02-15 00:37:35,505 INFO L933 BasicCegarLoop]: 594 mSDtfsCounter, 878 mSDsluCounter, 2450 mSDsCounter, 0 mSdLazyCounter, 5221 mSolverCounterSat, 358 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 880 SdHoareTripleChecker+Valid, 3044 SdHoareTripleChecker+Invalid, 5579 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 358 IncrementalHoareTripleChecker+Valid, 5221 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-02-15 00:37:35,505 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [880 Valid, 3044 Invalid, 5579 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [358 Valid, 5221 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-02-15 00:37:35,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 946 states. [2022-02-15 00:37:35,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 946 to 808. [2022-02-15 00:37:35,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 808 states, 635 states have (on average 1.3086614173228346) internal successors, (831), 649 states have internal predecessors, (831), 97 states have call successors, (97), 53 states have call predecessors, (97), 75 states have return successors, (148), 112 states have call predecessors, (148), 92 states have call successors, (148) [2022-02-15 00:37:35,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 808 states to 808 states and 1076 transitions. [2022-02-15 00:37:35,515 INFO L78 Accepts]: Start accepts. Automaton has 808 states and 1076 transitions. Word has length 62 [2022-02-15 00:37:35,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 00:37:35,515 INFO L470 AbstractCegarLoop]: Abstraction has 808 states and 1076 transitions. [2022-02-15 00:37:35,515 INFO L471 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) [2022-02-15 00:37:35,515 INFO L276 IsEmpty]: Start isEmpty. Operand 808 states and 1076 transitions. [2022-02-15 00:37:35,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-02-15 00:37:35,516 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 00:37:35,516 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 00:37:35,517 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-02-15 00:37:35,517 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 00:37:35,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 00:37:35,517 INFO L85 PathProgramCache]: Analyzing trace with hash -1508171679, now seen corresponding path program 1 times [2022-02-15 00:37:35,517 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 00:37:35,517 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766851631] [2022-02-15 00:37:35,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 00:37:35,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 00:37:35,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:37:35,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 00:37:35,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:37:35,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 00:37:35,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:37:35,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-15 00:37:35,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:37:35,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-02-15 00:37:35,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:37:35,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-15 00:37:35,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:37:35,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-15 00:37:35,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:37:35,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-02-15 00:37:35,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:37:35,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-02-15 00:37:35,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:37:35,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 00:37:35,798 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 00:37:35,798 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766851631] [2022-02-15 00:37:35,798 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [766851631] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 00:37:35,798 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 00:37:35,798 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-02-15 00:37:35,798 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473782257] [2022-02-15 00:37:35,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 00:37:35,799 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-02-15 00:37:35,799 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 00:37:35,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-02-15 00:37:35,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=359, Unknown=0, NotChecked=0, Total=420 [2022-02-15 00:37:35,800 INFO L87 Difference]: Start difference. First operand 808 states and 1076 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) [2022-02-15 00:37:38,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 00:37:38,178 INFO L93 Difference]: Finished difference Result 967 states and 1341 transitions. [2022-02-15 00:37:38,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-02-15 00:37:38,179 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 [2022-02-15 00:37:38,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 00:37:38,181 INFO L225 Difference]: With dead ends: 967 [2022-02-15 00:37:38,181 INFO L226 Difference]: Without dead ends: 945 [2022-02-15 00:37:38,181 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=120, Invalid=692, Unknown=0, NotChecked=0, Total=812 [2022-02-15 00:37:38,182 INFO L933 BasicCegarLoop]: 584 mSDtfsCounter, 931 mSDsluCounter, 2940 mSDsCounter, 0 mSdLazyCounter, 5589 mSolverCounterSat, 379 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 935 SdHoareTripleChecker+Valid, 3524 SdHoareTripleChecker+Invalid, 5968 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 379 IncrementalHoareTripleChecker+Valid, 5589 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-02-15 00:37:38,182 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [935 Valid, 3524 Invalid, 5968 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [379 Valid, 5589 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-02-15 00:37:38,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 945 states. [2022-02-15 00:37:38,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 945 to 806. [2022-02-15 00:37:38,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 806 states, 634 states have (on average 1.3075709779179812) internal successors, (829), 648 states have internal predecessors, (829), 96 states have call successors, (96), 53 states have call predecessors, (96), 75 states have return successors, (147), 111 states have call predecessors, (147), 91 states have call successors, (147) [2022-02-15 00:37:38,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 806 states to 806 states and 1072 transitions. [2022-02-15 00:37:38,192 INFO L78 Accepts]: Start accepts. Automaton has 806 states and 1072 transitions. Word has length 66 [2022-02-15 00:37:38,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 00:37:38,192 INFO L470 AbstractCegarLoop]: Abstraction has 806 states and 1072 transitions. [2022-02-15 00:37:38,192 INFO L471 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) [2022-02-15 00:37:38,192 INFO L276 IsEmpty]: Start isEmpty. Operand 806 states and 1072 transitions. [2022-02-15 00:37:38,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-02-15 00:37:38,193 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 00:37:38,194 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 00:37:38,194 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-02-15 00:37:38,194 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 00:37:38,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 00:37:38,194 INFO L85 PathProgramCache]: Analyzing trace with hash 136312337, now seen corresponding path program 1 times [2022-02-15 00:37:38,194 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 00:37:38,194 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138778109] [2022-02-15 00:37:38,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 00:37:38,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 00:37:38,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:37:38,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 00:37:38,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:37:38,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 00:37:38,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:37:38,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-15 00:37:38,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:37:38,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-02-15 00:37:38,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:37:38,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-15 00:37:38,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:37:38,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-02-15 00:37:38,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:37:38,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-02-15 00:37:38,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:37:38,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 00:37:38,429 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 00:37:38,429 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138778109] [2022-02-15 00:37:38,429 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2138778109] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 00:37:38,429 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 00:37:38,429 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-02-15 00:37:38,429 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430859355] [2022-02-15 00:37:38,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 00:37:38,431 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-02-15 00:37:38,431 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 00:37:38,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-02-15 00:37:38,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=327, Unknown=0, NotChecked=0, Total=380 [2022-02-15 00:37:38,431 INFO L87 Difference]: Start difference. First operand 806 states and 1072 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) [2022-02-15 00:37:41,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 00:37:41,138 INFO L93 Difference]: Finished difference Result 962 states and 1332 transitions. [2022-02-15 00:37:41,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-02-15 00:37:41,138 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 [2022-02-15 00:37:41,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 00:37:41,140 INFO L225 Difference]: With dead ends: 962 [2022-02-15 00:37:41,140 INFO L226 Difference]: Without dead ends: 941 [2022-02-15 00:37:41,140 INFO L932 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 [2022-02-15 00:37:41,140 INFO L933 BasicCegarLoop]: 561 mSDtfsCounter, 887 mSDsluCounter, 2731 mSDsCounter, 0 mSdLazyCounter, 6502 mSolverCounterSat, 357 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 890 SdHoareTripleChecker+Valid, 3292 SdHoareTripleChecker+Invalid, 6859 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 357 IncrementalHoareTripleChecker+Valid, 6502 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-02-15 00:37:41,141 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [890 Valid, 3292 Invalid, 6859 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [357 Valid, 6502 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-02-15 00:37:41,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 941 states. [2022-02-15 00:37:41,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 941 to 804. [2022-02-15 00:37:41,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 804 states, 633 states have (on average 1.306477093206951) internal successors, (827), 647 states have internal predecessors, (827), 95 states have call successors, (95), 53 states have call predecessors, (95), 75 states have return successors, (146), 110 states have call predecessors, (146), 90 states have call successors, (146) [2022-02-15 00:37:41,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 804 states to 804 states and 1068 transitions. [2022-02-15 00:37:41,150 INFO L78 Accepts]: Start accepts. Automaton has 804 states and 1068 transitions. Word has length 63 [2022-02-15 00:37:41,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 00:37:41,150 INFO L470 AbstractCegarLoop]: Abstraction has 804 states and 1068 transitions. [2022-02-15 00:37:41,150 INFO L471 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) [2022-02-15 00:37:41,150 INFO L276 IsEmpty]: Start isEmpty. Operand 804 states and 1068 transitions. [2022-02-15 00:37:41,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-02-15 00:37:41,152 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 00:37:41,152 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 00:37:41,152 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-02-15 00:37:41,152 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 00:37:41,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 00:37:41,152 INFO L85 PathProgramCache]: Analyzing trace with hash 982595257, now seen corresponding path program 1 times [2022-02-15 00:37:41,152 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 00:37:41,152 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610801147] [2022-02-15 00:37:41,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 00:37:41,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 00:37:41,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:37:41,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 00:37:41,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:37:41,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 00:37:41,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:37:41,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-15 00:37:41,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:37:41,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-02-15 00:37:41,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:37:41,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-02-15 00:37:41,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:37:41,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-15 00:37:41,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:37:41,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-02-15 00:37:41,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:37:41,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 00:37:41,295 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 00:37:41,295 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610801147] [2022-02-15 00:37:41,295 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1610801147] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 00:37:41,295 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 00:37:41,295 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-02-15 00:37:41,296 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076903364] [2022-02-15 00:37:41,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 00:37:41,296 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-02-15 00:37:41,296 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 00:37:41,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-02-15 00:37:41,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-02-15 00:37:41,296 INFO L87 Difference]: Start difference. First operand 804 states and 1068 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) [2022-02-15 00:37:42,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 00:37:42,371 INFO L93 Difference]: Finished difference Result 806 states and 1068 transitions. [2022-02-15 00:37:42,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-02-15 00:37:42,371 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 [2022-02-15 00:37:42,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 00:37:42,373 INFO L225 Difference]: With dead ends: 806 [2022-02-15 00:37:42,373 INFO L226 Difference]: Without dead ends: 802 [2022-02-15 00:37:42,373 INFO L932 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 [2022-02-15 00:37:42,373 INFO L933 BasicCegarLoop]: 519 mSDtfsCounter, 343 mSDsluCounter, 495 mSDsCounter, 0 mSdLazyCounter, 1266 mSolverCounterSat, 118 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 345 SdHoareTripleChecker+Valid, 1014 SdHoareTripleChecker+Invalid, 1384 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 118 IncrementalHoareTripleChecker+Valid, 1266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-02-15 00:37:42,374 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [345 Valid, 1014 Invalid, 1384 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [118 Valid, 1266 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-02-15 00:37:42,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 802 states. [2022-02-15 00:37:42,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 802 to 696. [2022-02-15 00:37:42,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 696 states, 548 states have (on average 1.2974452554744527) internal successors, (711), 561 states have internal predecessors, (711), 83 states have call successors, (83), 47 states have call predecessors, (83), 64 states have return successors, (105), 94 states have call predecessors, (105), 78 states have call successors, (105) [2022-02-15 00:37:42,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 696 states to 696 states and 899 transitions. [2022-02-15 00:37:42,381 INFO L78 Accepts]: Start accepts. Automaton has 696 states and 899 transitions. Word has length 63 [2022-02-15 00:37:42,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 00:37:42,381 INFO L470 AbstractCegarLoop]: Abstraction has 696 states and 899 transitions. [2022-02-15 00:37:42,381 INFO L471 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) [2022-02-15 00:37:42,381 INFO L276 IsEmpty]: Start isEmpty. Operand 696 states and 899 transitions. [2022-02-15 00:37:42,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-02-15 00:37:42,382 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 00:37:42,382 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 00:37:42,383 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-02-15 00:37:42,383 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 00:37:42,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 00:37:42,383 INFO L85 PathProgramCache]: Analyzing trace with hash -418163084, now seen corresponding path program 1 times [2022-02-15 00:37:42,383 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 00:37:42,383 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869307794] [2022-02-15 00:37:42,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 00:37:42,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 00:37:42,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:37:42,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 00:37:42,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:37:42,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 00:37:42,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:37:42,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-15 00:37:42,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:37:42,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-02-15 00:37:42,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:37:42,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-02-15 00:37:42,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:37:42,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-15 00:37:42,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:37:42,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-02-15 00:37:42,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:37:42,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 00:37:42,680 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 00:37:42,680 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869307794] [2022-02-15 00:37:42,680 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1869307794] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 00:37:42,680 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 00:37:42,680 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-02-15 00:37:42,680 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893294525] [2022-02-15 00:37:42,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 00:37:42,681 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-02-15 00:37:42,681 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 00:37:42,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-02-15 00:37:42,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=296, Unknown=0, NotChecked=0, Total=342 [2022-02-15 00:37:42,681 INFO L87 Difference]: Start difference. First operand 696 states and 899 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) [2022-02-15 00:37:44,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 00:37:44,948 INFO L93 Difference]: Finished difference Result 781 states and 1027 transitions. [2022-02-15 00:37:44,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-02-15 00:37:44,949 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 [2022-02-15 00:37:44,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 00:37:44,950 INFO L225 Difference]: With dead ends: 781 [2022-02-15 00:37:44,950 INFO L226 Difference]: Without dead ends: 762 [2022-02-15 00:37:44,950 INFO L932 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 [2022-02-15 00:37:44,951 INFO L933 BasicCegarLoop]: 521 mSDtfsCounter, 835 mSDsluCounter, 1990 mSDsCounter, 0 mSdLazyCounter, 5333 mSolverCounterSat, 316 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 837 SdHoareTripleChecker+Valid, 2511 SdHoareTripleChecker+Invalid, 5649 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 316 IncrementalHoareTripleChecker+Valid, 5333 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-02-15 00:37:44,951 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [837 Valid, 2511 Invalid, 5649 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [316 Valid, 5333 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-02-15 00:37:44,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 762 states. [2022-02-15 00:37:44,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 762 to 691. [2022-02-15 00:37:44,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 691 states, 545 states have (on average 1.2972477064220183) internal successors, (707), 558 states have internal predecessors, (707), 82 states have call successors, (82), 47 states have call predecessors, (82), 63 states have return successors, (103), 92 states have call predecessors, (103), 77 states have call successors, (103) [2022-02-15 00:37:44,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 691 states to 691 states and 892 transitions. [2022-02-15 00:37:44,957 INFO L78 Accepts]: Start accepts. Automaton has 691 states and 892 transitions. Word has length 63 [2022-02-15 00:37:44,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 00:37:44,958 INFO L470 AbstractCegarLoop]: Abstraction has 691 states and 892 transitions. [2022-02-15 00:37:44,958 INFO L471 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) [2022-02-15 00:37:44,958 INFO L276 IsEmpty]: Start isEmpty. Operand 691 states and 892 transitions. [2022-02-15 00:37:44,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-02-15 00:37:44,959 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 00:37:44,960 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 00:37:44,960 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-02-15 00:37:44,960 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 00:37:44,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 00:37:44,960 INFO L85 PathProgramCache]: Analyzing trace with hash 1864492088, now seen corresponding path program 1 times [2022-02-15 00:37:44,960 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 00:37:44,960 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558969075] [2022-02-15 00:37:44,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 00:37:44,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 00:37:44,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:37:45,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 00:37:45,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:37:45,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 00:37:45,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:37:45,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-15 00:37:45,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:37:45,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-02-15 00:37:45,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:37:45,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 00:37:45,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:37:45,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-02-15 00:37:45,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:37:45,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-02-15 00:37:45,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:37:45,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 00:37:45,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:37:45,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 00:37:45,107 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 00:37:45,108 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558969075] [2022-02-15 00:37:45,108 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [558969075] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 00:37:45,108 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 00:37:45,108 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-02-15 00:37:45,108 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432781663] [2022-02-15 00:37:45,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 00:37:45,108 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-02-15 00:37:45,108 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 00:37:45,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-02-15 00:37:45,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-02-15 00:37:45,109 INFO L87 Difference]: Start difference. First operand 691 states and 892 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) [2022-02-15 00:37:46,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 00:37:46,400 INFO L93 Difference]: Finished difference Result 762 states and 1003 transitions. [2022-02-15 00:37:46,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-02-15 00:37:46,400 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 [2022-02-15 00:37:46,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 00:37:46,402 INFO L225 Difference]: With dead ends: 762 [2022-02-15 00:37:46,402 INFO L226 Difference]: Without dead ends: 762 [2022-02-15 00:37:46,402 INFO L932 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 [2022-02-15 00:37:46,402 INFO L933 BasicCegarLoop]: 479 mSDtfsCounter, 408 mSDsluCounter, 530 mSDsCounter, 0 mSdLazyCounter, 1653 mSolverCounterSat, 145 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 418 SdHoareTripleChecker+Valid, 1009 SdHoareTripleChecker+Invalid, 1798 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 145 IncrementalHoareTripleChecker+Valid, 1653 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-02-15 00:37:46,402 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [418 Valid, 1009 Invalid, 1798 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [145 Valid, 1653 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-02-15 00:37:46,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 762 states. [2022-02-15 00:37:46,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 762 to 691. [2022-02-15 00:37:46,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 691 states, 545 states have (on average 1.2935779816513762) internal successors, (705), 558 states have internal predecessors, (705), 82 states have call successors, (82), 47 states have call predecessors, (82), 63 states have return successors, (103), 92 states have call predecessors, (103), 77 states have call successors, (103) [2022-02-15 00:37:46,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 691 states to 691 states and 890 transitions. [2022-02-15 00:37:46,409 INFO L78 Accepts]: Start accepts. Automaton has 691 states and 890 transitions. Word has length 66 [2022-02-15 00:37:46,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 00:37:46,409 INFO L470 AbstractCegarLoop]: Abstraction has 691 states and 890 transitions. [2022-02-15 00:37:46,409 INFO L471 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) [2022-02-15 00:37:46,409 INFO L276 IsEmpty]: Start isEmpty. Operand 691 states and 890 transitions. [2022-02-15 00:37:46,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-02-15 00:37:46,410 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 00:37:46,410 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 00:37:46,411 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2022-02-15 00:37:46,411 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 00:37:46,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 00:37:46,411 INFO L85 PathProgramCache]: Analyzing trace with hash 531525074, now seen corresponding path program 1 times [2022-02-15 00:37:46,411 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 00:37:46,411 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416323940] [2022-02-15 00:37:46,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 00:37:46,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 00:37:46,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:37:46,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 00:37:46,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:37:46,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 00:37:46,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:37:46,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-15 00:37:46,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:37:46,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-02-15 00:37:46,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:37:46,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-02-15 00:37:46,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:37:46,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-02-15 00:37:46,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:37:46,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-02-15 00:37:46,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:37:46,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 00:37:46,671 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 00:37:46,671 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416323940] [2022-02-15 00:37:46,671 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1416323940] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 00:37:46,671 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 00:37:46,671 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-02-15 00:37:46,671 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091300363] [2022-02-15 00:37:46,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 00:37:46,671 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-02-15 00:37:46,671 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 00:37:46,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-02-15 00:37:46,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2022-02-15 00:37:46,672 INFO L87 Difference]: Start difference. First operand 691 states and 890 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) [2022-02-15 00:37:48,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 00:37:48,112 INFO L93 Difference]: Finished difference Result 793 states and 1044 transitions. [2022-02-15 00:37:48,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-02-15 00:37:48,112 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 [2022-02-15 00:37:48,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 00:37:48,114 INFO L225 Difference]: With dead ends: 793 [2022-02-15 00:37:48,114 INFO L226 Difference]: Without dead ends: 793 [2022-02-15 00:37:48,114 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=138, Invalid=282, Unknown=0, NotChecked=0, Total=420 [2022-02-15 00:37:48,114 INFO L933 BasicCegarLoop]: 500 mSDtfsCounter, 1308 mSDsluCounter, 981 mSDsCounter, 0 mSdLazyCounter, 1823 mSolverCounterSat, 463 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1311 SdHoareTripleChecker+Valid, 1481 SdHoareTripleChecker+Invalid, 2286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 463 IncrementalHoareTripleChecker+Valid, 1823 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-02-15 00:37:48,115 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1311 Valid, 1481 Invalid, 2286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [463 Valid, 1823 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-02-15 00:37:48,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 793 states. [2022-02-15 00:37:48,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 793 to 697. [2022-02-15 00:37:48,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 697 states, 550 states have (on average 1.2927272727272727) internal successors, (711), 563 states have internal predecessors, (711), 83 states have call successors, (83), 47 states have call predecessors, (83), 63 states have return successors, (104), 93 states have call predecessors, (104), 78 states have call successors, (104) [2022-02-15 00:37:48,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 697 states to 697 states and 898 transitions. [2022-02-15 00:37:48,121 INFO L78 Accepts]: Start accepts. Automaton has 697 states and 898 transitions. Word has length 65 [2022-02-15 00:37:48,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 00:37:48,121 INFO L470 AbstractCegarLoop]: Abstraction has 697 states and 898 transitions. [2022-02-15 00:37:48,122 INFO L471 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) [2022-02-15 00:37:48,122 INFO L276 IsEmpty]: Start isEmpty. Operand 697 states and 898 transitions. [2022-02-15 00:37:48,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-02-15 00:37:48,123 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 00:37:48,123 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 00:37:48,123 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2022-02-15 00:37:48,123 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 00:37:48,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 00:37:48,123 INFO L85 PathProgramCache]: Analyzing trace with hash 1966008401, now seen corresponding path program 1 times [2022-02-15 00:37:48,123 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 00:37:48,123 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354135126] [2022-02-15 00:37:48,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 00:37:48,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 00:37:48,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:37:48,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 00:37:48,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:37:48,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 00:37:48,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:37:48,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-15 00:37:48,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:37:48,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-02-15 00:37:48,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:37:48,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-15 00:37:48,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:37:48,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-02-15 00:37:48,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:37:48,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-02-15 00:37:48,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:37:48,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-02-15 00:37:48,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:37:48,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 00:37:48,397 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 00:37:48,398 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354135126] [2022-02-15 00:37:48,399 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [354135126] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 00:37:48,399 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 00:37:48,399 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2022-02-15 00:37:48,399 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841788591] [2022-02-15 00:37:48,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 00:37:48,399 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-02-15 00:37:48,399 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 00:37:48,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-02-15 00:37:48,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=441, Unknown=0, NotChecked=0, Total=506 [2022-02-15 00:37:48,400 INFO L87 Difference]: Start difference. First operand 697 states and 898 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) [2022-02-15 00:37:50,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 00:37:50,840 INFO L93 Difference]: Finished difference Result 791 states and 1036 transitions. [2022-02-15 00:37:50,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-02-15 00:37:50,840 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 [2022-02-15 00:37:50,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 00:37:50,842 INFO L225 Difference]: With dead ends: 791 [2022-02-15 00:37:50,842 INFO L226 Difference]: Without dead ends: 767 [2022-02-15 00:37:50,842 INFO L932 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 [2022-02-15 00:37:50,842 INFO L933 BasicCegarLoop]: 516 mSDtfsCounter, 1156 mSDsluCounter, 2656 mSDsCounter, 0 mSdLazyCounter, 5997 mSolverCounterSat, 441 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1159 SdHoareTripleChecker+Valid, 3172 SdHoareTripleChecker+Invalid, 6438 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 441 IncrementalHoareTripleChecker+Valid, 5997 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-02-15 00:37:50,842 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1159 Valid, 3172 Invalid, 6438 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [441 Valid, 5997 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-02-15 00:37:50,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 767 states. [2022-02-15 00:37:50,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 767 to 694. [2022-02-15 00:37:50,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 694 states, 548 states have (on average 1.2919708029197081) internal successors, (708), 561 states have internal predecessors, (708), 82 states have call successors, (82), 47 states have call predecessors, (82), 63 states have return successors, (103), 92 states have call predecessors, (103), 77 states have call successors, (103) [2022-02-15 00:37:50,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 694 states to 694 states and 893 transitions. [2022-02-15 00:37:50,849 INFO L78 Accepts]: Start accepts. Automaton has 694 states and 893 transitions. Word has length 70 [2022-02-15 00:37:50,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 00:37:50,849 INFO L470 AbstractCegarLoop]: Abstraction has 694 states and 893 transitions. [2022-02-15 00:37:50,850 INFO L471 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) [2022-02-15 00:37:50,850 INFO L276 IsEmpty]: Start isEmpty. Operand 694 states and 893 transitions. [2022-02-15 00:37:50,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-02-15 00:37:50,850 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 00:37:50,851 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 00:37:50,851 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2022-02-15 00:37:50,851 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 00:37:50,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 00:37:50,851 INFO L85 PathProgramCache]: Analyzing trace with hash 1992943065, now seen corresponding path program 1 times [2022-02-15 00:37:50,851 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 00:37:50,851 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64105267] [2022-02-15 00:37:50,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 00:37:50,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 00:37:50,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:37:50,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 00:37:50,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:37:50,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 00:37:50,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:37:50,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-15 00:37:50,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:37:50,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-02-15 00:37:50,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:37:51,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-15 00:37:51,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:37:51,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-02-15 00:37:51,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:37:51,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-15 00:37:51,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:37:51,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-02-15 00:37:51,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:37:51,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 00:37:51,151 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 00:37:51,152 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64105267] [2022-02-15 00:37:51,152 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [64105267] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 00:37:51,152 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 00:37:51,152 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-02-15 00:37:51,152 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800868616] [2022-02-15 00:37:51,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 00:37:51,152 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-02-15 00:37:51,152 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 00:37:51,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-02-15 00:37:51,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=359, Unknown=0, NotChecked=0, Total=420 [2022-02-15 00:37:51,153 INFO L87 Difference]: Start difference. First operand 694 states and 893 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) [2022-02-15 00:37:53,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 00:37:53,208 INFO L93 Difference]: Finished difference Result 784 states and 1026 transitions. [2022-02-15 00:37:53,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-02-15 00:37:53,209 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 [2022-02-15 00:37:53,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 00:37:53,210 INFO L225 Difference]: With dead ends: 784 [2022-02-15 00:37:53,210 INFO L226 Difference]: Without dead ends: 762 [2022-02-15 00:37:53,211 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=120, Invalid=692, Unknown=0, NotChecked=0, Total=812 [2022-02-15 00:37:53,211 INFO L933 BasicCegarLoop]: 509 mSDtfsCounter, 627 mSDsluCounter, 2168 mSDsCounter, 0 mSdLazyCounter, 4892 mSolverCounterSat, 222 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 630 SdHoareTripleChecker+Valid, 2677 SdHoareTripleChecker+Invalid, 5114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 222 IncrementalHoareTripleChecker+Valid, 4892 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-02-15 00:37:53,211 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [630 Valid, 2677 Invalid, 5114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [222 Valid, 4892 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-02-15 00:37:53,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 762 states. [2022-02-15 00:37:53,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 762 to 692. [2022-02-15 00:37:53,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 692 states, 547 states have (on average 1.2906764168190128) internal successors, (706), 560 states have internal predecessors, (706), 81 states have call successors, (81), 47 states have call predecessors, (81), 63 states have return successors, (102), 91 states have call predecessors, (102), 76 states have call successors, (102) [2022-02-15 00:37:53,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 692 states to 692 states and 889 transitions. [2022-02-15 00:37:53,218 INFO L78 Accepts]: Start accepts. Automaton has 692 states and 889 transitions. Word has length 67 [2022-02-15 00:37:53,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 00:37:53,218 INFO L470 AbstractCegarLoop]: Abstraction has 692 states and 889 transitions. [2022-02-15 00:37:53,218 INFO L471 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) [2022-02-15 00:37:53,218 INFO L276 IsEmpty]: Start isEmpty. Operand 692 states and 889 transitions. [2022-02-15 00:37:53,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-02-15 00:37:53,219 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 00:37:53,219 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 00:37:53,219 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2022-02-15 00:37:53,220 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 00:37:53,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 00:37:53,220 INFO L85 PathProgramCache]: Analyzing trace with hash -925827221, now seen corresponding path program 1 times [2022-02-15 00:37:53,220 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 00:37:53,220 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579608054] [2022-02-15 00:37:53,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 00:37:53,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 00:37:53,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:37:53,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 00:37:53,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:37:53,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 00:37:53,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:37:53,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-15 00:37:53,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:37:53,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-02-15 00:37:53,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:37:53,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-02-15 00:37:53,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:37:53,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-02-15 00:37:53,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:37:53,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-02-15 00:37:53,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:37:53,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 00:37:53,366 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 00:37:53,366 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579608054] [2022-02-15 00:37:53,366 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1579608054] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 00:37:53,366 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 00:37:53,366 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-02-15 00:37:53,366 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164113848] [2022-02-15 00:37:53,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 00:37:53,366 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-02-15 00:37:53,366 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 00:37:53,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-02-15 00:37:53,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2022-02-15 00:37:53,367 INFO L87 Difference]: Start difference. First operand 692 states and 889 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) [2022-02-15 00:37:54,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 00:37:54,497 INFO L93 Difference]: Finished difference Result 764 states and 999 transitions. [2022-02-15 00:37:54,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-02-15 00:37:54,497 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 [2022-02-15 00:37:54,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 00:37:54,498 INFO L225 Difference]: With dead ends: 764 [2022-02-15 00:37:54,499 INFO L226 Difference]: Without dead ends: 764 [2022-02-15 00:37:54,499 INFO L932 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 [2022-02-15 00:37:54,499 INFO L933 BasicCegarLoop]: 497 mSDtfsCounter, 606 mSDsluCounter, 680 mSDsCounter, 0 mSdLazyCounter, 1622 mSolverCounterSat, 221 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 608 SdHoareTripleChecker+Valid, 1177 SdHoareTripleChecker+Invalid, 1843 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 221 IncrementalHoareTripleChecker+Valid, 1622 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-02-15 00:37:54,499 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [608 Valid, 1177 Invalid, 1843 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [221 Valid, 1622 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-02-15 00:37:54,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 764 states. [2022-02-15 00:37:54,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 764 to 692. [2022-02-15 00:37:54,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 692 states, 547 states have (on average 1.287020109689214) internal successors, (704), 560 states have internal predecessors, (704), 81 states have call successors, (81), 47 states have call predecessors, (81), 63 states have return successors, (102), 91 states have call predecessors, (102), 76 states have call successors, (102) [2022-02-15 00:37:54,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 692 states to 692 states and 887 transitions. [2022-02-15 00:37:54,506 INFO L78 Accepts]: Start accepts. Automaton has 692 states and 887 transitions. Word has length 66 [2022-02-15 00:37:54,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 00:37:54,506 INFO L470 AbstractCegarLoop]: Abstraction has 692 states and 887 transitions. [2022-02-15 00:37:54,506 INFO L471 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) [2022-02-15 00:37:54,506 INFO L276 IsEmpty]: Start isEmpty. Operand 692 states and 887 transitions. [2022-02-15 00:37:54,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-02-15 00:37:54,508 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 00:37:54,508 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 00:37:54,508 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2022-02-15 00:37:54,508 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 00:37:54,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 00:37:54,508 INFO L85 PathProgramCache]: Analyzing trace with hash -575027284, now seen corresponding path program 1 times [2022-02-15 00:37:54,508 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 00:37:54,508 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984242674] [2022-02-15 00:37:54,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 00:37:54,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 00:37:54,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:37:54,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 00:37:54,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:37:54,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 00:37:54,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:37:54,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-15 00:37:54,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:37:54,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-02-15 00:37:54,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:37:54,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-02-15 00:37:54,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:37:54,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-02-15 00:37:54,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:37:54,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-02-15 00:37:54,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:37:54,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 00:37:54,689 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 00:37:54,689 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984242674] [2022-02-15 00:37:54,689 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [984242674] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 00:37:54,689 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 00:37:54,689 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-02-15 00:37:54,690 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043429793] [2022-02-15 00:37:54,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 00:37:54,690 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-02-15 00:37:54,690 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 00:37:54,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-02-15 00:37:54,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2022-02-15 00:37:54,691 INFO L87 Difference]: Start difference. First operand 692 states and 887 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) [2022-02-15 00:37:56,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 00:37:56,374 INFO L93 Difference]: Finished difference Result 786 states and 1024 transitions. [2022-02-15 00:37:56,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-02-15 00:37:56,375 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 [2022-02-15 00:37:56,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 00:37:56,387 INFO L225 Difference]: With dead ends: 786 [2022-02-15 00:37:56,387 INFO L226 Difference]: Without dead ends: 712 [2022-02-15 00:37:56,387 INFO L932 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 [2022-02-15 00:37:56,388 INFO L933 BasicCegarLoop]: 500 mSDtfsCounter, 381 mSDsluCounter, 1368 mSDsCounter, 0 mSdLazyCounter, 3585 mSolverCounterSat, 151 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 386 SdHoareTripleChecker+Valid, 1868 SdHoareTripleChecker+Invalid, 3736 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 151 IncrementalHoareTripleChecker+Valid, 3585 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-02-15 00:37:56,388 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [386 Valid, 1868 Invalid, 3736 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [151 Valid, 3585 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-02-15 00:37:56,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 712 states. [2022-02-15 00:37:56,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 712 to 655. [2022-02-15 00:37:56,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 655 states, 517 states have (on average 1.2727272727272727) internal successors, (658), 530 states have internal predecessors, (658), 74 states have call successors, (74), 47 states have call predecessors, (74), 63 states have return successors, (94), 84 states have call predecessors, (94), 69 states have call successors, (94) [2022-02-15 00:37:56,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 655 states to 655 states and 826 transitions. [2022-02-15 00:37:56,395 INFO L78 Accepts]: Start accepts. Automaton has 655 states and 826 transitions. Word has length 66 [2022-02-15 00:37:56,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 00:37:56,396 INFO L470 AbstractCegarLoop]: Abstraction has 655 states and 826 transitions. [2022-02-15 00:37:56,396 INFO L471 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) [2022-02-15 00:37:56,396 INFO L276 IsEmpty]: Start isEmpty. Operand 655 states and 826 transitions. [2022-02-15 00:37:56,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-02-15 00:37:56,397 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 00:37:56,397 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 00:37:56,397 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2022-02-15 00:37:56,397 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 00:37:56,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 00:37:56,397 INFO L85 PathProgramCache]: Analyzing trace with hash -329926322, now seen corresponding path program 1 times [2022-02-15 00:37:56,397 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 00:37:56,397 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677538173] [2022-02-15 00:37:56,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 00:37:56,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 00:37:56,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:37:56,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 00:37:56,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:37:56,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 00:37:56,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:37:56,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-15 00:37:56,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:37:56,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-02-15 00:37:56,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:37:56,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-02-15 00:37:56,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:37:56,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-02-15 00:37:56,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:37:56,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-02-15 00:37:56,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:37:56,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 00:37:56,550 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 00:37:56,550 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677538173] [2022-02-15 00:37:56,550 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1677538173] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 00:37:56,551 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 00:37:56,551 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-02-15 00:37:56,551 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996904751] [2022-02-15 00:37:56,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 00:37:56,551 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-02-15 00:37:56,551 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 00:37:56,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-02-15 00:37:56,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2022-02-15 00:37:56,551 INFO L87 Difference]: Start difference. First operand 655 states and 826 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) [2022-02-15 00:37:57,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 00:37:57,545 INFO L93 Difference]: Finished difference Result 706 states and 905 transitions. [2022-02-15 00:37:57,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-02-15 00:37:57,546 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 [2022-02-15 00:37:57,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 00:37:57,547 INFO L225 Difference]: With dead ends: 706 [2022-02-15 00:37:57,547 INFO L226 Difference]: Without dead ends: 701 [2022-02-15 00:37:57,547 INFO L932 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 [2022-02-15 00:37:57,548 INFO L933 BasicCegarLoop]: 444 mSDtfsCounter, 1216 mSDsluCounter, 618 mSDsCounter, 0 mSdLazyCounter, 1228 mSolverCounterSat, 457 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1218 SdHoareTripleChecker+Valid, 1062 SdHoareTripleChecker+Invalid, 1685 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 457 IncrementalHoareTripleChecker+Valid, 1228 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-02-15 00:37:57,548 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1218 Valid, 1062 Invalid, 1685 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [457 Valid, 1228 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-02-15 00:37:57,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 701 states. [2022-02-15 00:37:57,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 701 to 650. [2022-02-15 00:37:57,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 650 states, 513 states have (on average 1.2729044834307992) internal successors, (653), 526 states have internal predecessors, (653), 73 states have call successors, (73), 47 states have call predecessors, (73), 63 states have return successors, (93), 83 states have call predecessors, (93), 68 states have call successors, (93) [2022-02-15 00:37:57,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 650 states to 650 states and 819 transitions. [2022-02-15 00:37:57,554 INFO L78 Accepts]: Start accepts. Automaton has 650 states and 819 transitions. Word has length 67 [2022-02-15 00:37:57,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 00:37:57,554 INFO L470 AbstractCegarLoop]: Abstraction has 650 states and 819 transitions. [2022-02-15 00:37:57,554 INFO L471 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) [2022-02-15 00:37:57,554 INFO L276 IsEmpty]: Start isEmpty. Operand 650 states and 819 transitions. [2022-02-15 00:37:57,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-02-15 00:37:57,555 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 00:37:57,555 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 00:37:57,555 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2022-02-15 00:37:57,555 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 00:37:57,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 00:37:57,555 INFO L85 PathProgramCache]: Analyzing trace with hash 872575031, now seen corresponding path program 1 times [2022-02-15 00:37:57,555 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 00:37:57,556 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706979611] [2022-02-15 00:37:57,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 00:37:57,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 00:37:57,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:37:57,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 00:37:57,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:37:57,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 00:37:57,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:37:57,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-15 00:37:57,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:37:57,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-02-15 00:37:57,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:37:57,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-02-15 00:37:57,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:37:57,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-02-15 00:37:57,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:37:57,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-02-15 00:37:57,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:37:57,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 00:37:57,711 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 00:37:57,711 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706979611] [2022-02-15 00:37:57,711 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [706979611] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 00:37:57,711 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 00:37:57,711 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-02-15 00:37:57,711 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139350739] [2022-02-15 00:37:57,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 00:37:57,711 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-02-15 00:37:57,711 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 00:37:57,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-02-15 00:37:57,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-02-15 00:37:57,712 INFO L87 Difference]: Start difference. First operand 650 states and 819 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) [2022-02-15 00:37:58,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 00:37:58,743 INFO L93 Difference]: Finished difference Result 817 states and 1044 transitions. [2022-02-15 00:37:58,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-02-15 00:37:58,743 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 [2022-02-15 00:37:58,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 00:37:58,745 INFO L225 Difference]: With dead ends: 817 [2022-02-15 00:37:58,745 INFO L226 Difference]: Without dead ends: 817 [2022-02-15 00:37:58,746 INFO L932 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 [2022-02-15 00:37:58,746 INFO L933 BasicCegarLoop]: 463 mSDtfsCounter, 1407 mSDsluCounter, 443 mSDsCounter, 0 mSdLazyCounter, 1097 mSolverCounterSat, 518 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1421 SdHoareTripleChecker+Valid, 906 SdHoareTripleChecker+Invalid, 1615 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 518 IncrementalHoareTripleChecker+Valid, 1097 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-02-15 00:37:58,746 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1421 Valid, 906 Invalid, 1615 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [518 Valid, 1097 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-02-15 00:37:58,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 817 states. [2022-02-15 00:37:58,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 817 to 692. [2022-02-15 00:37:58,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 692 states, 545 states have (on average 1.2660550458715596) internal successors, (690), 560 states have internal predecessors, (690), 75 states have call successors, (75), 49 states have call predecessors, (75), 71 states have return successors, (101), 91 states have call predecessors, (101), 70 states have call successors, (101) [2022-02-15 00:37:58,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 692 states to 692 states and 866 transitions. [2022-02-15 00:37:58,752 INFO L78 Accepts]: Start accepts. Automaton has 692 states and 866 transitions. Word has length 67 [2022-02-15 00:37:58,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 00:37:58,753 INFO L470 AbstractCegarLoop]: Abstraction has 692 states and 866 transitions. [2022-02-15 00:37:58,753 INFO L471 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) [2022-02-15 00:37:58,753 INFO L276 IsEmpty]: Start isEmpty. Operand 692 states and 866 transitions. [2022-02-15 00:37:58,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-02-15 00:37:58,754 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 00:37:58,754 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 00:37:58,754 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2022-02-15 00:37:58,754 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 00:37:58,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 00:37:58,754 INFO L85 PathProgramCache]: Analyzing trace with hash 1310592370, now seen corresponding path program 1 times [2022-02-15 00:37:58,754 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 00:37:58,754 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685113304] [2022-02-15 00:37:58,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 00:37:58,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 00:37:58,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:37:58,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 00:37:58,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:37:58,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 00:37:58,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:37:59,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-15 00:37:59,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:37:59,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-02-15 00:37:59,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:37:59,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-02-15 00:37:59,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:37:59,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-02-15 00:37:59,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:37:59,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-02-15 00:37:59,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:37:59,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 00:37:59,080 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 00:37:59,080 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685113304] [2022-02-15 00:37:59,080 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1685113304] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 00:37:59,080 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 00:37:59,081 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-02-15 00:37:59,081 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289006108] [2022-02-15 00:37:59,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 00:37:59,081 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-02-15 00:37:59,081 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 00:37:59,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-02-15 00:37:59,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2022-02-15 00:37:59,081 INFO L87 Difference]: Start difference. First operand 692 states and 866 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) [2022-02-15 00:38:00,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 00:38:00,406 INFO L93 Difference]: Finished difference Result 815 states and 1041 transitions. [2022-02-15 00:38:00,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-02-15 00:38:00,407 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 [2022-02-15 00:38:00,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 00:38:00,408 INFO L225 Difference]: With dead ends: 815 [2022-02-15 00:38:00,409 INFO L226 Difference]: Without dead ends: 815 [2022-02-15 00:38:00,409 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=113, Invalid=267, Unknown=0, NotChecked=0, Total=380 [2022-02-15 00:38:00,409 INFO L933 BasicCegarLoop]: 465 mSDtfsCounter, 1479 mSDsluCounter, 518 mSDsCounter, 0 mSdLazyCounter, 1542 mSolverCounterSat, 524 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1486 SdHoareTripleChecker+Valid, 983 SdHoareTripleChecker+Invalid, 2066 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 524 IncrementalHoareTripleChecker+Valid, 1542 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-02-15 00:38:00,409 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1486 Valid, 983 Invalid, 2066 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [524 Valid, 1542 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-02-15 00:38:00,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 815 states. [2022-02-15 00:38:00,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 815 to 692. [2022-02-15 00:38:00,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 692 states, 545 states have (on average 1.2642201834862385) internal successors, (689), 560 states have internal predecessors, (689), 75 states have call successors, (75), 49 states have call predecessors, (75), 71 states have return successors, (101), 91 states have call predecessors, (101), 70 states have call successors, (101) [2022-02-15 00:38:00,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 692 states to 692 states and 865 transitions. [2022-02-15 00:38:00,416 INFO L78 Accepts]: Start accepts. Automaton has 692 states and 865 transitions. Word has length 68 [2022-02-15 00:38:00,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 00:38:00,416 INFO L470 AbstractCegarLoop]: Abstraction has 692 states and 865 transitions. [2022-02-15 00:38:00,416 INFO L471 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) [2022-02-15 00:38:00,416 INFO L276 IsEmpty]: Start isEmpty. Operand 692 states and 865 transitions. [2022-02-15 00:38:00,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-02-15 00:38:00,417 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 00:38:00,417 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 00:38:00,417 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2022-02-15 00:38:00,417 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 00:38:00,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 00:38:00,418 INFO L85 PathProgramCache]: Analyzing trace with hash -771243238, now seen corresponding path program 1 times [2022-02-15 00:38:00,418 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 00:38:00,418 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938798401] [2022-02-15 00:38:00,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 00:38:00,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 00:38:00,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:00,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 00:38:00,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:00,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 00:38:00,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:00,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-15 00:38:00,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:00,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-02-15 00:38:00,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:00,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-02-15 00:38:00,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:00,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-02-15 00:38:00,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:00,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-02-15 00:38:00,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:00,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 00:38:00,725 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 00:38:00,725 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [938798401] [2022-02-15 00:38:00,725 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [938798401] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 00:38:00,725 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 00:38:00,725 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-02-15 00:38:00,725 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263030015] [2022-02-15 00:38:00,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 00:38:00,725 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-02-15 00:38:00,725 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 00:38:00,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-02-15 00:38:00,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=296, Unknown=0, NotChecked=0, Total=342 [2022-02-15 00:38:00,726 INFO L87 Difference]: Start difference. First operand 692 states and 865 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) [2022-02-15 00:38:02,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 00:38:02,776 INFO L93 Difference]: Finished difference Result 760 states and 963 transitions. [2022-02-15 00:38:02,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-02-15 00:38:02,776 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 [2022-02-15 00:38:02,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 00:38:02,777 INFO L225 Difference]: With dead ends: 760 [2022-02-15 00:38:02,778 INFO L226 Difference]: Without dead ends: 741 [2022-02-15 00:38:02,778 INFO L932 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 [2022-02-15 00:38:02,778 INFO L933 BasicCegarLoop]: 449 mSDtfsCounter, 239 mSDsluCounter, 1970 mSDsCounter, 0 mSdLazyCounter, 4892 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 241 SdHoareTripleChecker+Valid, 2419 SdHoareTripleChecker+Invalid, 4985 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 4892 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-02-15 00:38:02,778 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [241 Valid, 2419 Invalid, 4985 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 4892 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-02-15 00:38:02,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 741 states. [2022-02-15 00:38:02,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 741 to 690. [2022-02-15 00:38:02,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 690 states, 544 states have (on average 1.2628676470588236) internal successors, (687), 559 states have internal predecessors, (687), 74 states have call successors, (74), 49 states have call predecessors, (74), 71 states have return successors, (100), 90 states have call predecessors, (100), 69 states have call successors, (100) [2022-02-15 00:38:02,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 690 states to 690 states and 861 transitions. [2022-02-15 00:38:02,785 INFO L78 Accepts]: Start accepts. Automaton has 690 states and 861 transitions. Word has length 72 [2022-02-15 00:38:02,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 00:38:02,785 INFO L470 AbstractCegarLoop]: Abstraction has 690 states and 861 transitions. [2022-02-15 00:38:02,785 INFO L471 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) [2022-02-15 00:38:02,785 INFO L276 IsEmpty]: Start isEmpty. Operand 690 states and 861 transitions. [2022-02-15 00:38:02,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-02-15 00:38:02,786 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 00:38:02,786 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 00:38:02,786 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2022-02-15 00:38:02,786 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 00:38:02,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 00:38:02,786 INFO L85 PathProgramCache]: Analyzing trace with hash 667549759, now seen corresponding path program 1 times [2022-02-15 00:38:02,787 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 00:38:02,787 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463503329] [2022-02-15 00:38:02,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 00:38:02,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 00:38:02,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:02,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 00:38:02,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:02,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 00:38:02,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:02,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-15 00:38:02,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:02,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-02-15 00:38:02,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:02,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-15 00:38:02,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:03,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-02-15 00:38:03,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:03,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-02-15 00:38:03,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:03,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 00:38:03,092 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 00:38:03,092 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463503329] [2022-02-15 00:38:03,092 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [463503329] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 00:38:03,093 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 00:38:03,093 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-02-15 00:38:03,093 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115122750] [2022-02-15 00:38:03,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 00:38:03,093 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-02-15 00:38:03,093 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 00:38:03,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-02-15 00:38:03,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=296, Unknown=0, NotChecked=0, Total=342 [2022-02-15 00:38:03,094 INFO L87 Difference]: Start difference. First operand 690 states and 861 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) [2022-02-15 00:38:04,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 00:38:04,923 INFO L93 Difference]: Finished difference Result 755 states and 956 transitions. [2022-02-15 00:38:04,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-02-15 00:38:04,924 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 [2022-02-15 00:38:04,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 00:38:04,926 INFO L225 Difference]: With dead ends: 755 [2022-02-15 00:38:04,926 INFO L226 Difference]: Without dead ends: 727 [2022-02-15 00:38:04,927 INFO L932 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 [2022-02-15 00:38:04,928 INFO L933 BasicCegarLoop]: 442 mSDtfsCounter, 465 mSDsluCounter, 1787 mSDsCounter, 0 mSdLazyCounter, 4238 mSolverCounterSat, 178 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 467 SdHoareTripleChecker+Valid, 2229 SdHoareTripleChecker+Invalid, 4416 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 178 IncrementalHoareTripleChecker+Valid, 4238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-02-15 00:38:04,928 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [467 Valid, 2229 Invalid, 4416 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [178 Valid, 4238 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-02-15 00:38:04,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 727 states. [2022-02-15 00:38:04,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 727 to 678. [2022-02-15 00:38:04,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 678 states, 535 states have (on average 1.263551401869159) internal successors, (676), 550 states have internal predecessors, (676), 72 states have call successors, (72), 49 states have call predecessors, (72), 70 states have return successors, (97), 87 states have call predecessors, (97), 67 states have call successors, (97) [2022-02-15 00:38:04,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 678 states to 678 states and 845 transitions. [2022-02-15 00:38:04,935 INFO L78 Accepts]: Start accepts. Automaton has 678 states and 845 transitions. Word has length 69 [2022-02-15 00:38:04,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 00:38:04,935 INFO L470 AbstractCegarLoop]: Abstraction has 678 states and 845 transitions. [2022-02-15 00:38:04,936 INFO L471 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) [2022-02-15 00:38:04,936 INFO L276 IsEmpty]: Start isEmpty. Operand 678 states and 845 transitions. [2022-02-15 00:38:04,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-02-15 00:38:04,937 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 00:38:04,937 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 00:38:04,937 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2022-02-15 00:38:04,937 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 00:38:04,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 00:38:04,938 INFO L85 PathProgramCache]: Analyzing trace with hash -914202014, now seen corresponding path program 1 times [2022-02-15 00:38:04,938 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 00:38:04,938 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887031856] [2022-02-15 00:38:04,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 00:38:04,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 00:38:04,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:04,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 00:38:04,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:05,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 00:38:05,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:05,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-15 00:38:05,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:05,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-02-15 00:38:05,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:05,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-02-15 00:38:05,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:05,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-02-15 00:38:05,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:05,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-02-15 00:38:05,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:05,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 00:38:05,083 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 00:38:05,083 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [887031856] [2022-02-15 00:38:05,083 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [887031856] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 00:38:05,083 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 00:38:05,083 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-02-15 00:38:05,083 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467288464] [2022-02-15 00:38:05,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 00:38:05,084 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-02-15 00:38:05,084 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 00:38:05,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-02-15 00:38:05,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2022-02-15 00:38:05,085 INFO L87 Difference]: Start difference. First operand 678 states and 845 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) [2022-02-15 00:38:06,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 00:38:06,044 INFO L93 Difference]: Finished difference Result 727 states and 920 transitions. [2022-02-15 00:38:06,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-02-15 00:38:06,045 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 [2022-02-15 00:38:06,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 00:38:06,046 INFO L225 Difference]: With dead ends: 727 [2022-02-15 00:38:06,046 INFO L226 Difference]: Without dead ends: 722 [2022-02-15 00:38:06,046 INFO L932 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 [2022-02-15 00:38:06,047 INFO L933 BasicCegarLoop]: 422 mSDtfsCounter, 708 mSDsluCounter, 712 mSDsCounter, 0 mSdLazyCounter, 1459 mSolverCounterSat, 256 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 710 SdHoareTripleChecker+Valid, 1134 SdHoareTripleChecker+Invalid, 1715 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 256 IncrementalHoareTripleChecker+Valid, 1459 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-02-15 00:38:06,047 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [710 Valid, 1134 Invalid, 1715 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [256 Valid, 1459 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-02-15 00:38:06,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 722 states. [2022-02-15 00:38:06,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 722 to 673. [2022-02-15 00:38:06,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 673 states, 531 states have (on average 1.2636534839924671) internal successors, (671), 546 states have internal predecessors, (671), 71 states have call successors, (71), 49 states have call predecessors, (71), 70 states have return successors, (96), 86 states have call predecessors, (96), 66 states have call successors, (96) [2022-02-15 00:38:06,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 673 states to 673 states and 838 transitions. [2022-02-15 00:38:06,053 INFO L78 Accepts]: Start accepts. Automaton has 673 states and 838 transitions. Word has length 69 [2022-02-15 00:38:06,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 00:38:06,053 INFO L470 AbstractCegarLoop]: Abstraction has 673 states and 838 transitions. [2022-02-15 00:38:06,053 INFO L471 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) [2022-02-15 00:38:06,053 INFO L276 IsEmpty]: Start isEmpty. Operand 673 states and 838 transitions. [2022-02-15 00:38:06,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-02-15 00:38:06,054 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 00:38:06,054 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 00:38:06,054 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2022-02-15 00:38:06,054 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 00:38:06,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 00:38:06,054 INFO L85 PathProgramCache]: Analyzing trace with hash -761466943, now seen corresponding path program 1 times [2022-02-15 00:38:06,054 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 00:38:06,055 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429136689] [2022-02-15 00:38:06,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 00:38:06,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 00:38:06,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:06,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 00:38:06,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:06,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 00:38:06,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:06,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-15 00:38:06,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:06,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-02-15 00:38:06,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:06,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-02-15 00:38:06,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:06,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-02-15 00:38:06,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:06,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-02-15 00:38:06,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:06,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 00:38:06,298 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 00:38:06,298 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429136689] [2022-02-15 00:38:06,298 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1429136689] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 00:38:06,298 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 00:38:06,298 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-02-15 00:38:06,298 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171469068] [2022-02-15 00:38:06,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 00:38:06,298 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-15 00:38:06,298 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 00:38:06,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-15 00:38:06,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=256, Unknown=0, NotChecked=0, Total=306 [2022-02-15 00:38:06,299 INFO L87 Difference]: Start difference. First operand 673 states and 838 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) [2022-02-15 00:38:07,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 00:38:07,944 INFO L93 Difference]: Finished difference Result 746 states and 941 transitions. [2022-02-15 00:38:07,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-02-15 00:38:07,944 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 [2022-02-15 00:38:07,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 00:38:07,945 INFO L225 Difference]: With dead ends: 746 [2022-02-15 00:38:07,945 INFO L226 Difference]: Without dead ends: 719 [2022-02-15 00:38:07,946 INFO L932 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 [2022-02-15 00:38:07,946 INFO L933 BasicCegarLoop]: 436 mSDtfsCounter, 261 mSDsluCounter, 1841 mSDsCounter, 0 mSdLazyCounter, 3644 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 264 SdHoareTripleChecker+Valid, 2277 SdHoareTripleChecker+Invalid, 3733 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 3644 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-02-15 00:38:07,946 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [264 Valid, 2277 Invalid, 3733 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 3644 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-02-15 00:38:07,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 719 states. [2022-02-15 00:38:07,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 719 to 670. [2022-02-15 00:38:07,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 670 states, 529 states have (on average 1.2627599243856333) internal successors, (668), 544 states have internal predecessors, (668), 70 states have call successors, (70), 49 states have call predecessors, (70), 70 states have return successors, (95), 85 states have call predecessors, (95), 65 states have call successors, (95) [2022-02-15 00:38:07,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 670 states to 670 states and 833 transitions. [2022-02-15 00:38:07,952 INFO L78 Accepts]: Start accepts. Automaton has 670 states and 833 transitions. Word has length 69 [2022-02-15 00:38:07,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 00:38:07,952 INFO L470 AbstractCegarLoop]: Abstraction has 670 states and 833 transitions. [2022-02-15 00:38:07,952 INFO L471 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) [2022-02-15 00:38:07,952 INFO L276 IsEmpty]: Start isEmpty. Operand 670 states and 833 transitions. [2022-02-15 00:38:07,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-02-15 00:38:07,953 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 00:38:07,953 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 00:38:07,953 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2022-02-15 00:38:07,954 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 00:38:07,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 00:38:07,954 INFO L85 PathProgramCache]: Analyzing trace with hash 1045116325, now seen corresponding path program 1 times [2022-02-15 00:38:07,954 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 00:38:07,954 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782587050] [2022-02-15 00:38:07,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 00:38:07,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 00:38:07,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:08,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 00:38:08,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:08,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 00:38:08,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:08,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-15 00:38:08,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:08,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-02-15 00:38:08,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:08,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-02-15 00:38:08,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:08,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-02-15 00:38:08,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:08,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-02-15 00:38:08,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:08,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 00:38:08,115 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 00:38:08,115 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782587050] [2022-02-15 00:38:08,115 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1782587050] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 00:38:08,116 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 00:38:08,116 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-02-15 00:38:08,116 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254621864] [2022-02-15 00:38:08,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 00:38:08,116 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-02-15 00:38:08,116 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 00:38:08,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-02-15 00:38:08,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2022-02-15 00:38:08,117 INFO L87 Difference]: Start difference. First operand 670 states and 833 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) [2022-02-15 00:38:09,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 00:38:09,527 INFO L93 Difference]: Finished difference Result 791 states and 1003 transitions. [2022-02-15 00:38:09,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-02-15 00:38:09,528 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 [2022-02-15 00:38:09,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 00:38:09,530 INFO L225 Difference]: With dead ends: 791 [2022-02-15 00:38:09,530 INFO L226 Difference]: Without dead ends: 791 [2022-02-15 00:38:09,530 INFO L932 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 [2022-02-15 00:38:09,530 INFO L933 BasicCegarLoop]: 434 mSDtfsCounter, 1411 mSDsluCounter, 433 mSDsCounter, 0 mSdLazyCounter, 1688 mSolverCounterSat, 487 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1418 SdHoareTripleChecker+Valid, 867 SdHoareTripleChecker+Invalid, 2175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 487 IncrementalHoareTripleChecker+Valid, 1688 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-02-15 00:38:09,530 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1418 Valid, 867 Invalid, 2175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [487 Valid, 1688 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-02-15 00:38:09,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 791 states. [2022-02-15 00:38:09,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 791 to 668. [2022-02-15 00:38:09,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 668 states, 527 states have (on average 1.2618595825426946) internal successors, (665), 542 states have internal predecessors, (665), 70 states have call successors, (70), 49 states have call predecessors, (70), 70 states have return successors, (95), 85 states have call predecessors, (95), 65 states have call successors, (95) [2022-02-15 00:38:09,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 668 states to 668 states and 830 transitions. [2022-02-15 00:38:09,537 INFO L78 Accepts]: Start accepts. Automaton has 668 states and 830 transitions. Word has length 69 [2022-02-15 00:38:09,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 00:38:09,537 INFO L470 AbstractCegarLoop]: Abstraction has 668 states and 830 transitions. [2022-02-15 00:38:09,537 INFO L471 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) [2022-02-15 00:38:09,537 INFO L276 IsEmpty]: Start isEmpty. Operand 668 states and 830 transitions. [2022-02-15 00:38:09,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-02-15 00:38:09,538 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 00:38:09,538 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 00:38:09,538 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2022-02-15 00:38:09,539 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 00:38:09,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 00:38:09,539 INFO L85 PathProgramCache]: Analyzing trace with hash 1045148069, now seen corresponding path program 1 times [2022-02-15 00:38:09,539 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 00:38:09,539 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171801920] [2022-02-15 00:38:09,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 00:38:09,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 00:38:09,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:09,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 00:38:09,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:09,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 00:38:09,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:09,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-15 00:38:09,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:09,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-02-15 00:38:09,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:09,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-02-15 00:38:09,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:09,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-02-15 00:38:09,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:09,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-02-15 00:38:09,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:09,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 00:38:09,742 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 00:38:09,742 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171801920] [2022-02-15 00:38:09,742 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [171801920] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 00:38:09,742 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 00:38:09,742 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-02-15 00:38:09,742 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016909096] [2022-02-15 00:38:09,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 00:38:09,742 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-15 00:38:09,742 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 00:38:09,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-15 00:38:09,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=256, Unknown=0, NotChecked=0, Total=306 [2022-02-15 00:38:09,743 INFO L87 Difference]: Start difference. First operand 668 states and 830 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) [2022-02-15 00:38:11,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 00:38:11,257 INFO L93 Difference]: Finished difference Result 724 states and 912 transitions. [2022-02-15 00:38:11,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-02-15 00:38:11,258 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 [2022-02-15 00:38:11,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 00:38:11,259 INFO L225 Difference]: With dead ends: 724 [2022-02-15 00:38:11,259 INFO L226 Difference]: Without dead ends: 665 [2022-02-15 00:38:11,259 INFO L932 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 [2022-02-15 00:38:11,259 INFO L933 BasicCegarLoop]: 375 mSDtfsCounter, 796 mSDsluCounter, 1254 mSDsCounter, 0 mSdLazyCounter, 3570 mSolverCounterSat, 276 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 810 SdHoareTripleChecker+Valid, 1629 SdHoareTripleChecker+Invalid, 3846 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 276 IncrementalHoareTripleChecker+Valid, 3570 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-02-15 00:38:11,259 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [810 Valid, 1629 Invalid, 3846 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [276 Valid, 3570 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-02-15 00:38:11,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 665 states. [2022-02-15 00:38:11,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 665 to 612. [2022-02-15 00:38:11,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 612 states, 481 states have (on average 1.2536382536382535) internal successors, (603), 494 states have internal predecessors, (603), 68 states have call successors, (68), 47 states have call predecessors, (68), 62 states have return successors, (87), 77 states have call predecessors, (87), 63 states have call successors, (87) [2022-02-15 00:38:11,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 612 states to 612 states and 758 transitions. [2022-02-15 00:38:11,265 INFO L78 Accepts]: Start accepts. Automaton has 612 states and 758 transitions. Word has length 69 [2022-02-15 00:38:11,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 00:38:11,265 INFO L470 AbstractCegarLoop]: Abstraction has 612 states and 758 transitions. [2022-02-15 00:38:11,265 INFO L471 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) [2022-02-15 00:38:11,266 INFO L276 IsEmpty]: Start isEmpty. Operand 612 states and 758 transitions. [2022-02-15 00:38:11,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-02-15 00:38:11,266 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 00:38:11,267 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 00:38:11,267 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2022-02-15 00:38:11,267 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 00:38:11,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 00:38:11,267 INFO L85 PathProgramCache]: Analyzing trace with hash 1513722750, now seen corresponding path program 1 times [2022-02-15 00:38:11,267 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 00:38:11,267 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455778277] [2022-02-15 00:38:11,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 00:38:11,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 00:38:11,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:11,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 00:38:11,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:11,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 00:38:11,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:11,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-15 00:38:11,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:11,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-02-15 00:38:11,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:11,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-15 00:38:11,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:11,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-02-15 00:38:11,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:11,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-02-15 00:38:11,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:11,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-02-15 00:38:11,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:11,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 00:38:11,513 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 00:38:11,513 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455778277] [2022-02-15 00:38:11,513 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [455778277] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 00:38:11,513 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 00:38:11,513 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-02-15 00:38:11,513 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633703504] [2022-02-15 00:38:11,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 00:38:11,514 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-02-15 00:38:11,514 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 00:38:11,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-02-15 00:38:11,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=359, Unknown=0, NotChecked=0, Total=420 [2022-02-15 00:38:11,514 INFO L87 Difference]: Start difference. First operand 612 states and 758 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) [2022-02-15 00:38:13,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 00:38:13,264 INFO L93 Difference]: Finished difference Result 698 states and 882 transitions. [2022-02-15 00:38:13,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-02-15 00:38:13,265 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 [2022-02-15 00:38:13,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 00:38:13,266 INFO L225 Difference]: With dead ends: 698 [2022-02-15 00:38:13,266 INFO L226 Difference]: Without dead ends: 670 [2022-02-15 00:38:13,266 INFO L932 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 [2022-02-15 00:38:13,266 INFO L933 BasicCegarLoop]: 432 mSDtfsCounter, 704 mSDsluCounter, 2110 mSDsCounter, 0 mSdLazyCounter, 4177 mSolverCounterSat, 270 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 709 SdHoareTripleChecker+Valid, 2542 SdHoareTripleChecker+Invalid, 4447 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 270 IncrementalHoareTripleChecker+Valid, 4177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-02-15 00:38:13,267 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [709 Valid, 2542 Invalid, 4447 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [270 Valid, 4177 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-02-15 00:38:13,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 670 states. [2022-02-15 00:38:13,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 670 to 614. [2022-02-15 00:38:13,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 614 states, 483 states have (on average 1.2463768115942029) internal successors, (602), 496 states have internal predecessors, (602), 68 states have call successors, (68), 47 states have call predecessors, (68), 62 states have return successors, (87), 77 states have call predecessors, (87), 63 states have call successors, (87) [2022-02-15 00:38:13,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 614 states to 614 states and 757 transitions. [2022-02-15 00:38:13,273 INFO L78 Accepts]: Start accepts. Automaton has 614 states and 757 transitions. Word has length 71 [2022-02-15 00:38:13,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 00:38:13,273 INFO L470 AbstractCegarLoop]: Abstraction has 614 states and 757 transitions. [2022-02-15 00:38:13,273 INFO L471 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) [2022-02-15 00:38:13,273 INFO L276 IsEmpty]: Start isEmpty. Operand 614 states and 757 transitions. [2022-02-15 00:38:13,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-02-15 00:38:13,274 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 00:38:13,274 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 00:38:13,274 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2022-02-15 00:38:13,275 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 00:38:13,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 00:38:13,275 INFO L85 PathProgramCache]: Analyzing trace with hash 488230751, now seen corresponding path program 1 times [2022-02-15 00:38:13,275 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 00:38:13,275 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654175645] [2022-02-15 00:38:13,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 00:38:13,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 00:38:13,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:13,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 00:38:13,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:13,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 00:38:13,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:13,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-15 00:38:13,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:13,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-02-15 00:38:13,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:13,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-15 00:38:13,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:13,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-02-15 00:38:13,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:13,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-02-15 00:38:13,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:13,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-02-15 00:38:13,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:13,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 00:38:13,435 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 00:38:13,435 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654175645] [2022-02-15 00:38:13,435 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [654175645] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 00:38:13,435 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 00:38:13,435 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-02-15 00:38:13,435 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083103235] [2022-02-15 00:38:13,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 00:38:13,435 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-02-15 00:38:13,436 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 00:38:13,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-02-15 00:38:13,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2022-02-15 00:38:13,436 INFO L87 Difference]: Start difference. First operand 614 states and 757 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) [2022-02-15 00:38:14,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 00:38:14,277 INFO L93 Difference]: Finished difference Result 665 states and 834 transitions. [2022-02-15 00:38:14,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-02-15 00:38:14,277 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 [2022-02-15 00:38:14,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 00:38:14,278 INFO L225 Difference]: With dead ends: 665 [2022-02-15 00:38:14,278 INFO L226 Difference]: Without dead ends: 658 [2022-02-15 00:38:14,279 INFO L932 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 [2022-02-15 00:38:14,279 INFO L933 BasicCegarLoop]: 417 mSDtfsCounter, 671 mSDsluCounter, 735 mSDsCounter, 0 mSdLazyCounter, 1192 mSolverCounterSat, 250 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 672 SdHoareTripleChecker+Valid, 1152 SdHoareTripleChecker+Invalid, 1442 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 250 IncrementalHoareTripleChecker+Valid, 1192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-15 00:38:14,279 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [672 Valid, 1152 Invalid, 1442 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [250 Valid, 1192 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-15 00:38:14,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 658 states. [2022-02-15 00:38:14,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 658 to 607. [2022-02-15 00:38:14,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 607 states, 477 states have (on average 1.2473794549266248) internal successors, (595), 490 states have internal predecessors, (595), 67 states have call successors, (67), 47 states have call predecessors, (67), 62 states have return successors, (85), 76 states have call predecessors, (85), 62 states have call successors, (85) [2022-02-15 00:38:14,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 607 states to 607 states and 747 transitions. [2022-02-15 00:38:14,285 INFO L78 Accepts]: Start accepts. Automaton has 607 states and 747 transitions. Word has length 71 [2022-02-15 00:38:14,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 00:38:14,285 INFO L470 AbstractCegarLoop]: Abstraction has 607 states and 747 transitions. [2022-02-15 00:38:14,285 INFO L471 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) [2022-02-15 00:38:14,285 INFO L276 IsEmpty]: Start isEmpty. Operand 607 states and 747 transitions. [2022-02-15 00:38:14,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-02-15 00:38:14,286 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 00:38:14,286 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 00:38:14,286 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2022-02-15 00:38:14,286 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 00:38:14,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 00:38:14,286 INFO L85 PathProgramCache]: Analyzing trace with hash -756614912, now seen corresponding path program 1 times [2022-02-15 00:38:14,286 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 00:38:14,286 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660510739] [2022-02-15 00:38:14,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 00:38:14,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 00:38:14,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:14,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 00:38:14,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:14,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 00:38:14,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:14,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-15 00:38:14,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:14,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-02-15 00:38:14,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:14,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-15 00:38:14,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:14,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-02-15 00:38:14,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:14,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-02-15 00:38:14,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:14,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-02-15 00:38:14,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:14,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 00:38:14,451 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 00:38:14,452 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660510739] [2022-02-15 00:38:14,452 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1660510739] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 00:38:14,452 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 00:38:14,452 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-02-15 00:38:14,452 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417717798] [2022-02-15 00:38:14,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 00:38:14,452 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-02-15 00:38:14,452 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 00:38:14,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-02-15 00:38:14,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2022-02-15 00:38:14,453 INFO L87 Difference]: Start difference. First operand 607 states and 747 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) [2022-02-15 00:38:15,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 00:38:15,503 INFO L93 Difference]: Finished difference Result 658 states and 824 transitions. [2022-02-15 00:38:15,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-02-15 00:38:15,503 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 [2022-02-15 00:38:15,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 00:38:15,505 INFO L225 Difference]: With dead ends: 658 [2022-02-15 00:38:15,505 INFO L226 Difference]: Without dead ends: 652 [2022-02-15 00:38:15,505 INFO L932 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 [2022-02-15 00:38:15,505 INFO L933 BasicCegarLoop]: 409 mSDtfsCounter, 431 mSDsluCounter, 930 mSDsCounter, 0 mSdLazyCounter, 1618 mSolverCounterSat, 163 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 432 SdHoareTripleChecker+Valid, 1339 SdHoareTripleChecker+Invalid, 1781 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 163 IncrementalHoareTripleChecker+Valid, 1618 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-02-15 00:38:15,505 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [432 Valid, 1339 Invalid, 1781 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [163 Valid, 1618 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-02-15 00:38:15,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 652 states. [2022-02-15 00:38:15,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 652 to 601. [2022-02-15 00:38:15,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 601 states, 472 states have (on average 1.2478813559322033) internal successors, (589), 485 states have internal predecessors, (589), 66 states have call successors, (66), 47 states have call predecessors, (66), 62 states have return successors, (84), 75 states have call predecessors, (84), 61 states have call successors, (84) [2022-02-15 00:38:15,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 601 states to 601 states and 739 transitions. [2022-02-15 00:38:15,521 INFO L78 Accepts]: Start accepts. Automaton has 601 states and 739 transitions. Word has length 71 [2022-02-15 00:38:15,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 00:38:15,522 INFO L470 AbstractCegarLoop]: Abstraction has 601 states and 739 transitions. [2022-02-15 00:38:15,522 INFO L471 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) [2022-02-15 00:38:15,522 INFO L276 IsEmpty]: Start isEmpty. Operand 601 states and 739 transitions. [2022-02-15 00:38:15,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-02-15 00:38:15,523 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 00:38:15,523 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 00:38:15,523 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2022-02-15 00:38:15,523 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 00:38:15,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 00:38:15,524 INFO L85 PathProgramCache]: Analyzing trace with hash 1880837203, now seen corresponding path program 1 times [2022-02-15 00:38:15,524 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 00:38:15,524 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1150074372] [2022-02-15 00:38:15,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 00:38:15,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 00:38:15,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:15,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 00:38:15,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:15,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 00:38:15,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:15,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-15 00:38:15,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:15,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-02-15 00:38:15,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:15,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-15 00:38:15,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:15,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-15 00:38:15,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:15,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-02-15 00:38:15,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:15,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-02-15 00:38:15,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:15,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-02-15 00:38:15,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:15,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 00:38:15,777 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 00:38:15,777 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1150074372] [2022-02-15 00:38:15,777 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1150074372] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 00:38:15,777 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 00:38:15,777 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-02-15 00:38:15,777 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425971500] [2022-02-15 00:38:15,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 00:38:15,777 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-02-15 00:38:15,778 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 00:38:15,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-02-15 00:38:15,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=359, Unknown=0, NotChecked=0, Total=420 [2022-02-15 00:38:15,778 INFO L87 Difference]: Start difference. First operand 601 states and 739 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) [2022-02-15 00:38:17,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 00:38:17,375 INFO L93 Difference]: Finished difference Result 676 states and 844 transitions. [2022-02-15 00:38:17,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-02-15 00:38:17,375 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 [2022-02-15 00:38:17,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 00:38:17,376 INFO L225 Difference]: With dead ends: 676 [2022-02-15 00:38:17,376 INFO L226 Difference]: Without dead ends: 654 [2022-02-15 00:38:17,377 INFO L932 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 [2022-02-15 00:38:17,377 INFO L933 BasicCegarLoop]: 406 mSDtfsCounter, 855 mSDsluCounter, 1710 mSDsCounter, 0 mSdLazyCounter, 3563 mSolverCounterSat, 330 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 859 SdHoareTripleChecker+Valid, 2116 SdHoareTripleChecker+Invalid, 3893 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 330 IncrementalHoareTripleChecker+Valid, 3563 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-02-15 00:38:17,377 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [859 Valid, 2116 Invalid, 3893 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [330 Valid, 3563 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-02-15 00:38:17,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 654 states. [2022-02-15 00:38:17,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 654 to 599. [2022-02-15 00:38:17,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 599 states, 471 states have (on average 1.246284501061571) internal successors, (587), 484 states have internal predecessors, (587), 65 states have call successors, (65), 47 states have call predecessors, (65), 62 states have return successors, (83), 74 states have call predecessors, (83), 60 states have call successors, (83) [2022-02-15 00:38:17,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 599 states to 599 states and 735 transitions. [2022-02-15 00:38:17,383 INFO L78 Accepts]: Start accepts. Automaton has 599 states and 735 transitions. Word has length 74 [2022-02-15 00:38:17,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 00:38:17,383 INFO L470 AbstractCegarLoop]: Abstraction has 599 states and 735 transitions. [2022-02-15 00:38:17,383 INFO L471 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) [2022-02-15 00:38:17,383 INFO L276 IsEmpty]: Start isEmpty. Operand 599 states and 735 transitions. [2022-02-15 00:38:17,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-02-15 00:38:17,384 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 00:38:17,384 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 00:38:17,384 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2022-02-15 00:38:17,384 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 00:38:17,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 00:38:17,385 INFO L85 PathProgramCache]: Analyzing trace with hash 355041746, now seen corresponding path program 1 times [2022-02-15 00:38:17,385 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 00:38:17,385 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894178269] [2022-02-15 00:38:17,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 00:38:17,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 00:38:17,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:17,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 00:38:17,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:17,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 00:38:17,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:17,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-15 00:38:17,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:17,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-02-15 00:38:17,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:17,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-15 00:38:17,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:17,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-02-15 00:38:17,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:17,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-02-15 00:38:17,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:17,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-02-15 00:38:17,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:17,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 00:38:17,561 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 00:38:17,561 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894178269] [2022-02-15 00:38:17,561 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1894178269] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 00:38:17,561 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 00:38:17,561 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-02-15 00:38:17,562 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319290262] [2022-02-15 00:38:17,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 00:38:17,562 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-02-15 00:38:17,562 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 00:38:17,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-02-15 00:38:17,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2022-02-15 00:38:17,562 INFO L87 Difference]: Start difference. First operand 599 states and 735 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) [2022-02-15 00:38:18,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 00:38:18,424 INFO L93 Difference]: Finished difference Result 648 states and 807 transitions. [2022-02-15 00:38:18,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-02-15 00:38:18,424 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 [2022-02-15 00:38:18,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 00:38:18,425 INFO L225 Difference]: With dead ends: 648 [2022-02-15 00:38:18,425 INFO L226 Difference]: Without dead ends: 637 [2022-02-15 00:38:18,425 INFO L932 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 [2022-02-15 00:38:18,426 INFO L933 BasicCegarLoop]: 395 mSDtfsCounter, 415 mSDsluCounter, 893 mSDsCounter, 0 mSdLazyCounter, 1376 mSolverCounterSat, 155 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 416 SdHoareTripleChecker+Valid, 1288 SdHoareTripleChecker+Invalid, 1531 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 155 IncrementalHoareTripleChecker+Valid, 1376 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-15 00:38:18,426 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [416 Valid, 1288 Invalid, 1531 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [155 Valid, 1376 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-15 00:38:18,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 637 states. [2022-02-15 00:38:18,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 637 to 587. [2022-02-15 00:38:18,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 587 states, 460 states have (on average 1.241304347826087) internal successors, (571), 473 states have internal predecessors, (571), 64 states have call successors, (64), 47 states have call predecessors, (64), 62 states have return successors, (82), 73 states have call predecessors, (82), 59 states have call successors, (82) [2022-02-15 00:38:18,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 587 states to 587 states and 717 transitions. [2022-02-15 00:38:18,431 INFO L78 Accepts]: Start accepts. Automaton has 587 states and 717 transitions. Word has length 73 [2022-02-15 00:38:18,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 00:38:18,431 INFO L470 AbstractCegarLoop]: Abstraction has 587 states and 717 transitions. [2022-02-15 00:38:18,431 INFO L471 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) [2022-02-15 00:38:18,431 INFO L276 IsEmpty]: Start isEmpty. Operand 587 states and 717 transitions. [2022-02-15 00:38:18,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-02-15 00:38:18,432 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 00:38:18,432 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 00:38:18,432 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2022-02-15 00:38:18,432 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 00:38:18,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 00:38:18,433 INFO L85 PathProgramCache]: Analyzing trace with hash -1118214243, now seen corresponding path program 1 times [2022-02-15 00:38:18,433 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 00:38:18,433 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293701328] [2022-02-15 00:38:18,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 00:38:18,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 00:38:18,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:18,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 00:38:18,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:18,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 00:38:18,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:18,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-15 00:38:18,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:18,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-02-15 00:38:18,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:18,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-02-15 00:38:18,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:18,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-02-15 00:38:18,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:18,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-02-15 00:38:18,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:18,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-02-15 00:38:18,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:18,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 00:38:18,703 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 00:38:18,703 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [293701328] [2022-02-15 00:38:18,703 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [293701328] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 00:38:18,703 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 00:38:18,703 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-02-15 00:38:18,703 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580491041] [2022-02-15 00:38:18,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 00:38:18,704 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-02-15 00:38:18,704 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 00:38:18,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-02-15 00:38:18,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=276, Unknown=0, NotChecked=0, Total=342 [2022-02-15 00:38:18,704 INFO L87 Difference]: Start difference. First operand 587 states and 717 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) [2022-02-15 00:38:21,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 00:38:21,798 INFO L93 Difference]: Finished difference Result 1242 states and 1546 transitions. [2022-02-15 00:38:21,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-02-15 00:38:21,799 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 [2022-02-15 00:38:21,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 00:38:21,800 INFO L225 Difference]: With dead ends: 1242 [2022-02-15 00:38:21,800 INFO L226 Difference]: Without dead ends: 1212 [2022-02-15 00:38:21,801 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 613 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=614, Invalid=2356, Unknown=0, NotChecked=0, Total=2970 [2022-02-15 00:38:21,801 INFO L933 BasicCegarLoop]: 391 mSDtfsCounter, 2861 mSDsluCounter, 851 mSDsCounter, 0 mSdLazyCounter, 3982 mSolverCounterSat, 967 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2865 SdHoareTripleChecker+Valid, 1242 SdHoareTripleChecker+Invalid, 4949 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 967 IncrementalHoareTripleChecker+Valid, 3982 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-02-15 00:38:21,801 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2865 Valid, 1242 Invalid, 4949 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [967 Valid, 3982 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-02-15 00:38:21,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1212 states. [2022-02-15 00:38:21,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1212 to 904. [2022-02-15 00:38:21,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 904 states, 713 states have (on average 1.2650771388499298) internal successors, (902), 734 states have internal predecessors, (902), 95 states have call successors, (95), 74 states have call predecessors, (95), 95 states have return successors, (126), 102 states have call predecessors, (126), 90 states have call successors, (126) [2022-02-15 00:38:21,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 904 states to 904 states and 1123 transitions. [2022-02-15 00:38:21,810 INFO L78 Accepts]: Start accepts. Automaton has 904 states and 1123 transitions. Word has length 73 [2022-02-15 00:38:21,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 00:38:21,810 INFO L470 AbstractCegarLoop]: Abstraction has 904 states and 1123 transitions. [2022-02-15 00:38:21,810 INFO L471 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) [2022-02-15 00:38:21,810 INFO L276 IsEmpty]: Start isEmpty. Operand 904 states and 1123 transitions. [2022-02-15 00:38:21,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-02-15 00:38:21,812 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 00:38:21,812 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 00:38:21,812 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2022-02-15 00:38:21,812 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 00:38:21,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 00:38:21,812 INFO L85 PathProgramCache]: Analyzing trace with hash 1368905532, now seen corresponding path program 1 times [2022-02-15 00:38:21,812 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 00:38:21,812 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353620840] [2022-02-15 00:38:21,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 00:38:21,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 00:38:21,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:21,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 00:38:21,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:21,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 00:38:21,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:21,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-15 00:38:21,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:21,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-02-15 00:38:21,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:21,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-02-15 00:38:21,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:21,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-02-15 00:38:21,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:21,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-02-15 00:38:21,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:21,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-02-15 00:38:21,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:21,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 00:38:21,988 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 00:38:21,988 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353620840] [2022-02-15 00:38:21,988 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1353620840] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 00:38:21,988 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 00:38:21,988 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-02-15 00:38:21,988 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149753200] [2022-02-15 00:38:21,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 00:38:21,988 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-02-15 00:38:21,988 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 00:38:21,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-02-15 00:38:21,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2022-02-15 00:38:21,989 INFO L87 Difference]: Start difference. First operand 904 states and 1123 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) [2022-02-15 00:38:23,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 00:38:23,908 INFO L93 Difference]: Finished difference Result 1156 states and 1445 transitions. [2022-02-15 00:38:23,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-02-15 00:38:23,909 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 [2022-02-15 00:38:23,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 00:38:23,911 INFO L225 Difference]: With dead ends: 1156 [2022-02-15 00:38:23,911 INFO L226 Difference]: Without dead ends: 1156 [2022-02-15 00:38:23,911 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=189, Invalid=567, Unknown=0, NotChecked=0, Total=756 [2022-02-15 00:38:23,911 INFO L933 BasicCegarLoop]: 652 mSDtfsCounter, 3494 mSDsluCounter, 855 mSDsCounter, 0 mSdLazyCounter, 2320 mSolverCounterSat, 1196 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3498 SdHoareTripleChecker+Valid, 1507 SdHoareTripleChecker+Invalid, 3516 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1196 IncrementalHoareTripleChecker+Valid, 2320 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-02-15 00:38:23,911 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3498 Valid, 1507 Invalid, 3516 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1196 Valid, 2320 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-02-15 00:38:23,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1156 states. [2022-02-15 00:38:23,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1156 to 997. [2022-02-15 00:38:23,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 997 states, 786 states have (on average 1.251908396946565) internal successors, (984), 802 states have internal predecessors, (984), 109 states have call successors, (109), 78 states have call predecessors, (109), 101 states have return successors, (142), 121 states have call predecessors, (142), 104 states have call successors, (142) [2022-02-15 00:38:23,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 997 states to 997 states and 1235 transitions. [2022-02-15 00:38:23,922 INFO L78 Accepts]: Start accepts. Automaton has 997 states and 1235 transitions. Word has length 73 [2022-02-15 00:38:23,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 00:38:23,922 INFO L470 AbstractCegarLoop]: Abstraction has 997 states and 1235 transitions. [2022-02-15 00:38:23,922 INFO L471 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) [2022-02-15 00:38:23,922 INFO L276 IsEmpty]: Start isEmpty. Operand 997 states and 1235 transitions. [2022-02-15 00:38:23,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-02-15 00:38:23,923 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 00:38:23,923 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 00:38:23,923 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2022-02-15 00:38:23,923 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 00:38:23,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 00:38:23,924 INFO L85 PathProgramCache]: Analyzing trace with hash -529895932, now seen corresponding path program 1 times [2022-02-15 00:38:23,924 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 00:38:23,924 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375383901] [2022-02-15 00:38:23,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 00:38:23,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 00:38:23,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:23,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 00:38:23,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:24,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 00:38:24,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:24,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-15 00:38:24,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:24,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-02-15 00:38:24,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:24,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-15 00:38:24,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:24,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-15 00:38:24,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:24,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-02-15 00:38:24,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:24,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-02-15 00:38:24,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:24,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-02-15 00:38:24,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:24,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 00:38:24,129 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 00:38:24,129 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375383901] [2022-02-15 00:38:24,129 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [375383901] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 00:38:24,129 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 00:38:24,129 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-02-15 00:38:24,129 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441727068] [2022-02-15 00:38:24,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 00:38:24,129 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-02-15 00:38:24,129 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 00:38:24,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-02-15 00:38:24,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2022-02-15 00:38:24,130 INFO L87 Difference]: Start difference. First operand 997 states and 1235 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) [2022-02-15 00:38:25,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 00:38:25,081 INFO L93 Difference]: Finished difference Result 1093 states and 1373 transitions. [2022-02-15 00:38:25,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-02-15 00:38:25,081 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 [2022-02-15 00:38:25,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 00:38:25,083 INFO L225 Difference]: With dead ends: 1093 [2022-02-15 00:38:25,083 INFO L226 Difference]: Without dead ends: 1063 [2022-02-15 00:38:25,083 INFO L932 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 [2022-02-15 00:38:25,083 INFO L933 BasicCegarLoop]: 381 mSDtfsCounter, 896 mSDsluCounter, 871 mSDsCounter, 0 mSdLazyCounter, 1607 mSolverCounterSat, 360 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 897 SdHoareTripleChecker+Valid, 1252 SdHoareTripleChecker+Invalid, 1967 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 360 IncrementalHoareTripleChecker+Valid, 1607 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-02-15 00:38:25,084 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [897 Valid, 1252 Invalid, 1967 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [360 Valid, 1607 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-02-15 00:38:25,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1063 states. [2022-02-15 00:38:25,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1063 to 979. [2022-02-15 00:38:25,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 979 states, 772 states have (on average 1.2512953367875648) internal successors, (966), 788 states have internal predecessors, (966), 105 states have call successors, (105), 78 states have call predecessors, (105), 101 states have return successors, (136), 117 states have call predecessors, (136), 100 states have call successors, (136) [2022-02-15 00:38:25,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 979 states to 979 states and 1207 transitions. [2022-02-15 00:38:25,093 INFO L78 Accepts]: Start accepts. Automaton has 979 states and 1207 transitions. Word has length 75 [2022-02-15 00:38:25,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 00:38:25,093 INFO L470 AbstractCegarLoop]: Abstraction has 979 states and 1207 transitions. [2022-02-15 00:38:25,093 INFO L471 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) [2022-02-15 00:38:25,093 INFO L276 IsEmpty]: Start isEmpty. Operand 979 states and 1207 transitions. [2022-02-15 00:38:25,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-02-15 00:38:25,094 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 00:38:25,094 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 00:38:25,095 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2022-02-15 00:38:25,095 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 00:38:25,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 00:38:25,095 INFO L85 PathProgramCache]: Analyzing trace with hash 1642144115, now seen corresponding path program 1 times [2022-02-15 00:38:25,095 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 00:38:25,095 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537011667] [2022-02-15 00:38:25,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 00:38:25,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 00:38:25,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:25,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 00:38:25,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:25,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 00:38:25,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:25,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-15 00:38:25,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:25,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-02-15 00:38:25,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:25,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-02-15 00:38:25,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:25,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-02-15 00:38:25,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:25,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-02-15 00:38:25,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:25,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 00:38:25,247 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 00:38:25,247 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537011667] [2022-02-15 00:38:25,247 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [537011667] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 00:38:25,247 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 00:38:25,247 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-02-15 00:38:25,247 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731199664] [2022-02-15 00:38:25,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 00:38:25,248 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-02-15 00:38:25,248 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 00:38:25,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-02-15 00:38:25,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2022-02-15 00:38:25,248 INFO L87 Difference]: Start difference. First operand 979 states and 1207 transitions. Second operand has 12 states, 12 states have (on average 4.75) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-02-15 00:38:25,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 00:38:25,976 INFO L93 Difference]: Finished difference Result 1059 states and 1325 transitions. [2022-02-15 00:38:25,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-02-15 00:38:25,976 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.75) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 73 [2022-02-15 00:38:25,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 00:38:25,978 INFO L225 Difference]: With dead ends: 1059 [2022-02-15 00:38:25,978 INFO L226 Difference]: Without dead ends: 1047 [2022-02-15 00:38:25,978 INFO L932 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 [2022-02-15 00:38:25,978 INFO L933 BasicCegarLoop]: 368 mSDtfsCounter, 679 mSDsluCounter, 751 mSDsCounter, 0 mSdLazyCounter, 970 mSolverCounterSat, 261 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 681 SdHoareTripleChecker+Valid, 1119 SdHoareTripleChecker+Invalid, 1231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 261 IncrementalHoareTripleChecker+Valid, 970 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-15 00:38:25,978 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [681 Valid, 1119 Invalid, 1231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [261 Valid, 970 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-15 00:38:25,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1047 states. [2022-02-15 00:38:25,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1047 to 963. [2022-02-15 00:38:25,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 963 states, 758 states have (on average 1.2506596306068603) internal successors, (948), 774 states have internal predecessors, (948), 103 states have call successors, (103), 78 states have call predecessors, (103), 101 states have return successors, (132), 115 states have call predecessors, (132), 98 states have call successors, (132) [2022-02-15 00:38:25,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 963 states to 963 states and 1183 transitions. [2022-02-15 00:38:25,988 INFO L78 Accepts]: Start accepts. Automaton has 963 states and 1183 transitions. Word has length 73 [2022-02-15 00:38:25,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 00:38:25,988 INFO L470 AbstractCegarLoop]: Abstraction has 963 states and 1183 transitions. [2022-02-15 00:38:25,988 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.75) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-02-15 00:38:25,989 INFO L276 IsEmpty]: Start isEmpty. Operand 963 states and 1183 transitions. [2022-02-15 00:38:25,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-02-15 00:38:25,990 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 00:38:25,990 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 00:38:25,990 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2022-02-15 00:38:25,990 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 00:38:25,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 00:38:25,990 INFO L85 PathProgramCache]: Analyzing trace with hash 780600349, now seen corresponding path program 1 times [2022-02-15 00:38:25,990 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 00:38:25,991 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285443467] [2022-02-15 00:38:25,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 00:38:25,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 00:38:26,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:26,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 00:38:26,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:26,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 00:38:26,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:26,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-15 00:38:26,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:26,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-02-15 00:38:26,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:26,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 00:38:26,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:26,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-02-15 00:38:26,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:26,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-02-15 00:38:26,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:26,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 00:38:26,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:26,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-02-15 00:38:26,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:26,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 00:38:26,237 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 00:38:26,237 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285443467] [2022-02-15 00:38:26,237 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1285443467] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 00:38:26,237 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 00:38:26,237 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-02-15 00:38:26,237 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857645787] [2022-02-15 00:38:26,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 00:38:26,237 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-02-15 00:38:26,238 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 00:38:26,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-02-15 00:38:26,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2022-02-15 00:38:26,238 INFO L87 Difference]: Start difference. First operand 963 states and 1183 transitions. Second operand has 13 states, 13 states have (on average 4.230769230769231) internal successors, (55), 5 states have internal predecessors, (55), 2 states have call successors, (13), 9 states have call predecessors, (13), 3 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2022-02-15 00:38:27,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 00:38:27,104 INFO L93 Difference]: Finished difference Result 1033 states and 1287 transitions. [2022-02-15 00:38:27,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-02-15 00:38:27,104 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.230769230769231) internal successors, (55), 5 states have internal predecessors, (55), 2 states have call successors, (13), 9 states have call predecessors, (13), 3 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) Word has length 77 [2022-02-15 00:38:27,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 00:38:27,106 INFO L225 Difference]: With dead ends: 1033 [2022-02-15 00:38:27,106 INFO L226 Difference]: Without dead ends: 1033 [2022-02-15 00:38:27,106 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2022-02-15 00:38:27,106 INFO L933 BasicCegarLoop]: 360 mSDtfsCounter, 595 mSDsluCounter, 1069 mSDsCounter, 0 mSdLazyCounter, 1467 mSolverCounterSat, 218 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 599 SdHoareTripleChecker+Valid, 1429 SdHoareTripleChecker+Invalid, 1685 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 218 IncrementalHoareTripleChecker+Valid, 1467 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-02-15 00:38:27,106 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [599 Valid, 1429 Invalid, 1685 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [218 Valid, 1467 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-02-15 00:38:27,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1033 states. [2022-02-15 00:38:27,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1033 to 949. [2022-02-15 00:38:27,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 949 states, 744 states have (on average 1.2446236559139785) internal successors, (926), 760 states have internal predecessors, (926), 103 states have call successors, (103), 78 states have call predecessors, (103), 101 states have return successors, (132), 115 states have call predecessors, (132), 98 states have call successors, (132) [2022-02-15 00:38:27,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 949 states to 949 states and 1161 transitions. [2022-02-15 00:38:27,116 INFO L78 Accepts]: Start accepts. Automaton has 949 states and 1161 transitions. Word has length 77 [2022-02-15 00:38:27,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 00:38:27,116 INFO L470 AbstractCegarLoop]: Abstraction has 949 states and 1161 transitions. [2022-02-15 00:38:27,116 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.230769230769231) internal successors, (55), 5 states have internal predecessors, (55), 2 states have call successors, (13), 9 states have call predecessors, (13), 3 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2022-02-15 00:38:27,116 INFO L276 IsEmpty]: Start isEmpty. Operand 949 states and 1161 transitions. [2022-02-15 00:38:27,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-02-15 00:38:27,117 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 00:38:27,117 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 00:38:27,118 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2022-02-15 00:38:27,118 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 00:38:27,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 00:38:27,118 INFO L85 PathProgramCache]: Analyzing trace with hash 1219602648, now seen corresponding path program 1 times [2022-02-15 00:38:27,118 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 00:38:27,118 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410984785] [2022-02-15 00:38:27,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 00:38:27,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 00:38:27,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:27,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 00:38:27,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:27,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 00:38:27,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:27,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-15 00:38:27,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:27,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-02-15 00:38:27,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:27,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-02-15 00:38:27,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:27,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-02-15 00:38:27,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:27,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-02-15 00:38:27,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:27,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-02-15 00:38:27,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:27,280 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-02-15 00:38:27,280 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 00:38:27,280 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410984785] [2022-02-15 00:38:27,280 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [410984785] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 00:38:27,280 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 00:38:27,281 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-02-15 00:38:27,281 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121209817] [2022-02-15 00:38:27,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 00:38:27,281 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-02-15 00:38:27,281 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 00:38:27,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-02-15 00:38:27,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2022-02-15 00:38:27,281 INFO L87 Difference]: Start difference. First operand 949 states and 1161 transitions. Second operand has 12 states, 12 states have (on average 4.583333333333333) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (10), 9 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-02-15 00:38:28,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 00:38:28,158 INFO L93 Difference]: Finished difference Result 1033 states and 1285 transitions. [2022-02-15 00:38:28,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-02-15 00:38:28,159 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.583333333333333) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (10), 9 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 75 [2022-02-15 00:38:28,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 00:38:28,160 INFO L225 Difference]: With dead ends: 1033 [2022-02-15 00:38:28,160 INFO L226 Difference]: Without dead ends: 1013 [2022-02-15 00:38:28,160 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2022-02-15 00:38:28,166 INFO L933 BasicCegarLoop]: 361 mSDtfsCounter, 485 mSDsluCounter, 843 mSDsCounter, 0 mSdLazyCounter, 1260 mSolverCounterSat, 189 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 487 SdHoareTripleChecker+Valid, 1204 SdHoareTripleChecker+Invalid, 1449 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 189 IncrementalHoareTripleChecker+Valid, 1260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-15 00:38:28,166 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [487 Valid, 1204 Invalid, 1449 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [189 Valid, 1260 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-15 00:38:28,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1013 states. [2022-02-15 00:38:28,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1013 to 929. [2022-02-15 00:38:28,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 929 states, 728 states have (on average 1.2445054945054945) internal successors, (906), 744 states have internal predecessors, (906), 99 states have call successors, (99), 78 states have call predecessors, (99), 101 states have return successors, (128), 111 states have call predecessors, (128), 94 states have call successors, (128) [2022-02-15 00:38:28,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 929 states to 929 states and 1133 transitions. [2022-02-15 00:38:28,175 INFO L78 Accepts]: Start accepts. Automaton has 929 states and 1133 transitions. Word has length 75 [2022-02-15 00:38:28,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 00:38:28,175 INFO L470 AbstractCegarLoop]: Abstraction has 929 states and 1133 transitions. [2022-02-15 00:38:28,175 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.583333333333333) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (10), 9 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-02-15 00:38:28,176 INFO L276 IsEmpty]: Start isEmpty. Operand 929 states and 1133 transitions. [2022-02-15 00:38:28,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-02-15 00:38:28,177 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 00:38:28,177 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 00:38:28,177 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2022-02-15 00:38:28,177 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 00:38:28,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 00:38:28,177 INFO L85 PathProgramCache]: Analyzing trace with hash 590503932, now seen corresponding path program 1 times [2022-02-15 00:38:28,177 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 00:38:28,178 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317660358] [2022-02-15 00:38:28,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 00:38:28,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 00:38:28,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:28,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 00:38:28,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:28,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 00:38:28,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:28,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-15 00:38:28,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:28,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-02-15 00:38:28,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:28,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-15 00:38:28,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:28,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-02-15 00:38:28,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:28,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-15 00:38:28,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:28,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-02-15 00:38:28,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:28,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-02-15 00:38:28,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:28,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 00:38:28,469 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 00:38:28,469 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317660358] [2022-02-15 00:38:28,469 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1317660358] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 00:38:28,469 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 00:38:28,469 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-02-15 00:38:28,469 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092718979] [2022-02-15 00:38:28,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 00:38:28,469 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-02-15 00:38:28,470 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 00:38:28,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-02-15 00:38:28,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=359, Unknown=0, NotChecked=0, Total=420 [2022-02-15 00:38:28,470 INFO L87 Difference]: Start difference. First operand 929 states and 1133 transitions. Second operand has 21 states, 21 states have (on average 2.7142857142857144) internal successors, (57), 10 states have internal predecessors, (57), 4 states have call successors, (11), 10 states have call predecessors, (11), 4 states have return successors, (9), 5 states have call predecessors, (9), 3 states have call successors, (9) [2022-02-15 00:38:29,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 00:38:29,770 INFO L93 Difference]: Finished difference Result 1044 states and 1295 transitions. [2022-02-15 00:38:29,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-02-15 00:38:29,771 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.7142857142857144) internal successors, (57), 10 states have internal predecessors, (57), 4 states have call successors, (11), 10 states have call predecessors, (11), 4 states have return successors, (9), 5 states have call predecessors, (9), 3 states have call successors, (9) Word has length 77 [2022-02-15 00:38:29,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 00:38:29,772 INFO L225 Difference]: With dead ends: 1044 [2022-02-15 00:38:29,772 INFO L226 Difference]: Without dead ends: 1005 [2022-02-15 00:38:29,772 INFO L932 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 [2022-02-15 00:38:29,773 INFO L933 BasicCegarLoop]: 358 mSDtfsCounter, 784 mSDsluCounter, 1999 mSDsCounter, 0 mSdLazyCounter, 2864 mSolverCounterSat, 307 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 787 SdHoareTripleChecker+Valid, 2357 SdHoareTripleChecker+Invalid, 3171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 307 IncrementalHoareTripleChecker+Valid, 2864 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-02-15 00:38:29,773 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [787 Valid, 2357 Invalid, 3171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [307 Valid, 2864 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-02-15 00:38:29,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1005 states. [2022-02-15 00:38:29,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1005 to 925. [2022-02-15 00:38:29,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 925 states, 724 states have (on average 1.2430939226519337) internal successors, (900), 740 states have internal predecessors, (900), 99 states have call successors, (99), 78 states have call predecessors, (99), 101 states have return successors, (128), 111 states have call predecessors, (128), 94 states have call successors, (128) [2022-02-15 00:38:29,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 925 states to 925 states and 1127 transitions. [2022-02-15 00:38:29,781 INFO L78 Accepts]: Start accepts. Automaton has 925 states and 1127 transitions. Word has length 77 [2022-02-15 00:38:29,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 00:38:29,781 INFO L470 AbstractCegarLoop]: Abstraction has 925 states and 1127 transitions. [2022-02-15 00:38:29,781 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.7142857142857144) internal successors, (57), 10 states have internal predecessors, (57), 4 states have call successors, (11), 10 states have call predecessors, (11), 4 states have return successors, (9), 5 states have call predecessors, (9), 3 states have call successors, (9) [2022-02-15 00:38:29,781 INFO L276 IsEmpty]: Start isEmpty. Operand 925 states and 1127 transitions. [2022-02-15 00:38:29,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-02-15 00:38:29,782 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 00:38:29,782 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 00:38:29,782 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2022-02-15 00:38:29,783 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 00:38:29,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 00:38:29,783 INFO L85 PathProgramCache]: Analyzing trace with hash 968314861, now seen corresponding path program 1 times [2022-02-15 00:38:29,783 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 00:38:29,783 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079557244] [2022-02-15 00:38:29,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 00:38:29,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 00:38:29,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:29,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 00:38:29,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:29,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 00:38:29,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:29,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-15 00:38:29,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:29,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-02-15 00:38:29,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:29,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-15 00:38:29,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:29,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-02-15 00:38:29,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:29,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-15 00:38:29,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:29,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-02-15 00:38:29,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:29,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-02-15 00:38:29,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:29,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 00:38:29,943 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 00:38:29,943 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079557244] [2022-02-15 00:38:29,943 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2079557244] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 00:38:29,943 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 00:38:29,943 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-02-15 00:38:29,944 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849615920] [2022-02-15 00:38:29,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 00:38:29,944 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-02-15 00:38:29,944 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 00:38:29,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-02-15 00:38:29,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-02-15 00:38:29,944 INFO L87 Difference]: Start difference. First operand 925 states and 1127 transitions. Second operand has 11 states, 11 states have (on average 5.363636363636363) internal successors, (59), 3 states have internal predecessors, (59), 2 states have call successors, (11), 10 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-02-15 00:38:30,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 00:38:30,548 INFO L93 Difference]: Finished difference Result 1019 states and 1265 transitions. [2022-02-15 00:38:30,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-02-15 00:38:30,548 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.363636363636363) internal successors, (59), 3 states have internal predecessors, (59), 2 states have call successors, (11), 10 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 79 [2022-02-15 00:38:30,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 00:38:30,550 INFO L225 Difference]: With dead ends: 1019 [2022-02-15 00:38:30,550 INFO L226 Difference]: Without dead ends: 1019 [2022-02-15 00:38:30,550 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=96, Unknown=0, NotChecked=0, Total=156 [2022-02-15 00:38:30,550 INFO L933 BasicCegarLoop]: 351 mSDtfsCounter, 475 mSDsluCounter, 549 mSDsCounter, 0 mSdLazyCounter, 741 mSolverCounterSat, 191 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 477 SdHoareTripleChecker+Valid, 900 SdHoareTripleChecker+Invalid, 932 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 191 IncrementalHoareTripleChecker+Valid, 741 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-15 00:38:30,550 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [477 Valid, 900 Invalid, 932 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [191 Valid, 741 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-15 00:38:30,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1019 states. [2022-02-15 00:38:30,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1019 to 927. [2022-02-15 00:38:30,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 927 states, 726 states have (on average 1.2424242424242424) internal successors, (902), 742 states have internal predecessors, (902), 99 states have call successors, (99), 78 states have call predecessors, (99), 101 states have return successors, (128), 111 states have call predecessors, (128), 94 states have call successors, (128) [2022-02-15 00:38:30,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 927 states to 927 states and 1129 transitions. [2022-02-15 00:38:30,559 INFO L78 Accepts]: Start accepts. Automaton has 927 states and 1129 transitions. Word has length 79 [2022-02-15 00:38:30,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 00:38:30,559 INFO L470 AbstractCegarLoop]: Abstraction has 927 states and 1129 transitions. [2022-02-15 00:38:30,559 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.363636363636363) internal successors, (59), 3 states have internal predecessors, (59), 2 states have call successors, (11), 10 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-02-15 00:38:30,560 INFO L276 IsEmpty]: Start isEmpty. Operand 927 states and 1129 transitions. [2022-02-15 00:38:30,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-02-15 00:38:30,561 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 00:38:30,561 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 00:38:30,561 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2022-02-15 00:38:30,561 INFO L402 AbstractCegarLoop]: === Iteration 69 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 00:38:30,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 00:38:30,561 INFO L85 PathProgramCache]: Analyzing trace with hash -186895060, now seen corresponding path program 1 times [2022-02-15 00:38:30,561 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 00:38:30,561 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981152615] [2022-02-15 00:38:30,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 00:38:30,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 00:38:30,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:30,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 00:38:30,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:30,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 00:38:30,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:30,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-15 00:38:30,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:30,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-02-15 00:38:30,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:30,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-15 00:38:30,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:30,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-02-15 00:38:30,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:30,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-15 00:38:30,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:30,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-15 00:38:30,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:30,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-02-15 00:38:30,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:30,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 00:38:30,725 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 00:38:30,725 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981152615] [2022-02-15 00:38:30,725 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1981152615] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 00:38:30,725 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 00:38:30,725 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-02-15 00:38:30,725 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614221605] [2022-02-15 00:38:30,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 00:38:30,725 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-02-15 00:38:30,726 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 00:38:30,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-02-15 00:38:30,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2022-02-15 00:38:30,726 INFO L87 Difference]: Start difference. First operand 927 states and 1129 transitions. Second operand has 13 states, 13 states have (on average 4.461538461538462) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (11), 10 states have call predecessors, (11), 3 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2022-02-15 00:38:31,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 00:38:31,519 INFO L93 Difference]: Finished difference Result 949 states and 1161 transitions. [2022-02-15 00:38:31,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-02-15 00:38:31,519 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.461538461538462) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (11), 10 states have call predecessors, (11), 3 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) Word has length 78 [2022-02-15 00:38:31,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 00:38:31,521 INFO L225 Difference]: With dead ends: 949 [2022-02-15 00:38:31,521 INFO L226 Difference]: Without dead ends: 913 [2022-02-15 00:38:31,521 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2022-02-15 00:38:31,521 INFO L933 BasicCegarLoop]: 319 mSDtfsCounter, 288 mSDsluCounter, 772 mSDsCounter, 0 mSdLazyCounter, 1273 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 289 SdHoareTripleChecker+Valid, 1091 SdHoareTripleChecker+Invalid, 1393 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 1273 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-15 00:38:31,522 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [289 Valid, 1091 Invalid, 1393 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 1273 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-15 00:38:31,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 913 states. [2022-02-15 00:38:31,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 913 to 861. [2022-02-15 00:38:31,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 861 states, 676 states have (on average 1.242603550295858) internal successors, (840), 692 states have internal predecessors, (840), 87 states have call successors, (87), 74 states have call predecessors, (87), 97 states have return successors, (114), 99 states have call predecessors, (114), 82 states have call successors, (114) [2022-02-15 00:38:31,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 861 states to 861 states and 1041 transitions. [2022-02-15 00:38:31,529 INFO L78 Accepts]: Start accepts. Automaton has 861 states and 1041 transitions. Word has length 78 [2022-02-15 00:38:31,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 00:38:31,530 INFO L470 AbstractCegarLoop]: Abstraction has 861 states and 1041 transitions. [2022-02-15 00:38:31,530 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.461538461538462) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (11), 10 states have call predecessors, (11), 3 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2022-02-15 00:38:31,530 INFO L276 IsEmpty]: Start isEmpty. Operand 861 states and 1041 transitions. [2022-02-15 00:38:31,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-02-15 00:38:31,531 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 00:38:31,531 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 00:38:31,531 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2022-02-15 00:38:31,532 INFO L402 AbstractCegarLoop]: === Iteration 70 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 00:38:31,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 00:38:31,532 INFO L85 PathProgramCache]: Analyzing trace with hash 461830745, now seen corresponding path program 1 times [2022-02-15 00:38:31,532 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 00:38:31,532 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221890820] [2022-02-15 00:38:31,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 00:38:31,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 00:38:31,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:31,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 00:38:31,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:31,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 00:38:31,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:31,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-15 00:38:31,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:31,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-02-15 00:38:31,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:31,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-02-15 00:38:31,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:31,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-02-15 00:38:31,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:31,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-02-15 00:38:31,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:31,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-02-15 00:38:31,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:31,692 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-02-15 00:38:31,693 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 00:38:31,693 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221890820] [2022-02-15 00:38:31,693 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1221890820] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 00:38:31,693 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1608810901] [2022-02-15 00:38:31,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 00:38:31,693 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 00:38:31,693 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 00:38:31,695 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-15 00:38:31,697 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-02-15 00:38:31,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:31,898 INFO L263 TraceCheckSpWp]: Trace formula consists of 908 conjuncts, 4 conjunts are in the unsatisfiable core [2022-02-15 00:38:31,911 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 00:38:32,016 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 00:38:32,016 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-02-15 00:38:32,017 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1608810901] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 00:38:32,017 INFO L191 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-02-15 00:38:32,017 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 12 [2022-02-15 00:38:32,017 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921367941] [2022-02-15 00:38:32,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 00:38:32,018 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-15 00:38:32,018 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 00:38:32,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-15 00:38:32,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2022-02-15 00:38:32,018 INFO L87 Difference]: Start difference. First operand 861 states and 1041 transitions. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-02-15 00:38:32,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 00:38:32,029 INFO L93 Difference]: Finished difference Result 828 states and 1001 transitions. [2022-02-15 00:38:32,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-02-15 00:38:32,030 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 77 [2022-02-15 00:38:32,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 00:38:32,031 INFO L225 Difference]: With dead ends: 828 [2022-02-15 00:38:32,031 INFO L226 Difference]: Without dead ends: 800 [2022-02-15 00:38:32,031 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2022-02-15 00:38:32,032 INFO L933 BasicCegarLoop]: 296 mSDtfsCounter, 0 mSDsluCounter, 884 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1180 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-15 00:38:32,032 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 1180 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-15 00:38:32,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 800 states. [2022-02-15 00:38:32,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 800 to 800. [2022-02-15 00:38:32,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 800 states, 630 states have (on average 1.2507936507936508) internal successors, (788), 643 states have internal predecessors, (788), 81 states have call successors, (81), 71 states have call predecessors, (81), 88 states have return successors, (102), 90 states have call predecessors, (102), 76 states have call successors, (102) [2022-02-15 00:38:32,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 800 states to 800 states and 971 transitions. [2022-02-15 00:38:32,040 INFO L78 Accepts]: Start accepts. Automaton has 800 states and 971 transitions. Word has length 77 [2022-02-15 00:38:32,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 00:38:32,040 INFO L470 AbstractCegarLoop]: Abstraction has 800 states and 971 transitions. [2022-02-15 00:38:32,040 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-02-15 00:38:32,040 INFO L276 IsEmpty]: Start isEmpty. Operand 800 states and 971 transitions. [2022-02-15 00:38:32,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-02-15 00:38:32,041 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 00:38:32,041 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 00:38:32,060 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-02-15 00:38:32,255 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable69 [2022-02-15 00:38:32,256 INFO L402 AbstractCegarLoop]: === Iteration 71 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 00:38:32,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 00:38:32,256 INFO L85 PathProgramCache]: Analyzing trace with hash 1363389701, now seen corresponding path program 1 times [2022-02-15 00:38:32,256 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 00:38:32,256 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858651399] [2022-02-15 00:38:32,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 00:38:32,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 00:38:32,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:32,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 00:38:32,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:32,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 00:38:32,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:32,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-15 00:38:32,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:32,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-02-15 00:38:32,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:32,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 00:38:32,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:32,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-02-15 00:38:32,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:32,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-02-15 00:38:32,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:32,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 00:38:32,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:32,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-02-15 00:38:32,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:32,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-02-15 00:38:32,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:32,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 00:38:32,487 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 00:38:32,487 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858651399] [2022-02-15 00:38:32,488 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1858651399] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 00:38:32,488 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 00:38:32,488 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-02-15 00:38:32,488 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931526001] [2022-02-15 00:38:32,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 00:38:32,488 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-02-15 00:38:32,488 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 00:38:32,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-02-15 00:38:32,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2022-02-15 00:38:32,489 INFO L87 Difference]: Start difference. First operand 800 states and 971 transitions. Second operand has 14 states, 14 states have (on average 4.071428571428571) internal successors, (57), 6 states have internal predecessors, (57), 4 states have call successors, (14), 11 states have call predecessors, (14), 5 states have return successors, (10), 6 states have call predecessors, (10), 3 states have call successors, (10) [2022-02-15 00:38:33,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 00:38:33,184 INFO L93 Difference]: Finished difference Result 852 states and 1043 transitions. [2022-02-15 00:38:33,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-02-15 00:38:33,184 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.071428571428571) internal successors, (57), 6 states have internal predecessors, (57), 4 states have call successors, (14), 11 states have call predecessors, (14), 5 states have return successors, (10), 6 states have call predecessors, (10), 3 states have call successors, (10) Word has length 81 [2022-02-15 00:38:33,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 00:38:33,186 INFO L225 Difference]: With dead ends: 852 [2022-02-15 00:38:33,186 INFO L226 Difference]: Without dead ends: 852 [2022-02-15 00:38:33,186 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=121, Invalid=385, Unknown=0, NotChecked=0, Total=506 [2022-02-15 00:38:33,186 INFO L933 BasicCegarLoop]: 275 mSDtfsCounter, 668 mSDsluCounter, 763 mSDsCounter, 0 mSdLazyCounter, 984 mSolverCounterSat, 210 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 675 SdHoareTripleChecker+Valid, 1038 SdHoareTripleChecker+Invalid, 1194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 210 IncrementalHoareTripleChecker+Valid, 984 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-15 00:38:33,186 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [675 Valid, 1038 Invalid, 1194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [210 Valid, 984 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-15 00:38:33,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 852 states. [2022-02-15 00:38:33,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 852 to 800. [2022-02-15 00:38:33,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 800 states, 630 states have (on average 1.2476190476190476) internal successors, (786), 643 states have internal predecessors, (786), 81 states have call successors, (81), 71 states have call predecessors, (81), 88 states have return successors, (102), 90 states have call predecessors, (102), 76 states have call successors, (102) [2022-02-15 00:38:33,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 800 states to 800 states and 969 transitions. [2022-02-15 00:38:33,193 INFO L78 Accepts]: Start accepts. Automaton has 800 states and 969 transitions. Word has length 81 [2022-02-15 00:38:33,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 00:38:33,194 INFO L470 AbstractCegarLoop]: Abstraction has 800 states and 969 transitions. [2022-02-15 00:38:33,194 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.071428571428571) internal successors, (57), 6 states have internal predecessors, (57), 4 states have call successors, (14), 11 states have call predecessors, (14), 5 states have return successors, (10), 6 states have call predecessors, (10), 3 states have call successors, (10) [2022-02-15 00:38:33,194 INFO L276 IsEmpty]: Start isEmpty. Operand 800 states and 969 transitions. [2022-02-15 00:38:33,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-02-15 00:38:33,195 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 00:38:33,195 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 00:38:33,195 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2022-02-15 00:38:33,195 INFO L402 AbstractCegarLoop]: === Iteration 72 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 00:38:33,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 00:38:33,195 INFO L85 PathProgramCache]: Analyzing trace with hash -1220432173, now seen corresponding path program 1 times [2022-02-15 00:38:33,196 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 00:38:33,196 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169350582] [2022-02-15 00:38:33,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 00:38:33,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 00:38:33,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:33,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 00:38:33,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:33,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 00:38:33,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:33,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-15 00:38:33,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:33,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-02-15 00:38:33,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:33,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-02-15 00:38:33,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:33,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-02-15 00:38:33,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:33,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-02-15 00:38:33,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:33,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-02-15 00:38:33,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:33,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-02-15 00:38:33,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:33,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 00:38:33,455 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 00:38:33,455 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169350582] [2022-02-15 00:38:33,456 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [169350582] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 00:38:33,456 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 00:38:33,456 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-02-15 00:38:33,456 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165511379] [2022-02-15 00:38:33,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 00:38:33,456 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-15 00:38:33,456 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 00:38:33,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-15 00:38:33,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=246, Unknown=0, NotChecked=0, Total=306 [2022-02-15 00:38:33,457 INFO L87 Difference]: Start difference. First operand 800 states and 969 transitions. Second operand has 18 states, 18 states have (on average 3.2222222222222223) internal successors, (58), 9 states have internal predecessors, (58), 5 states have call successors, (11), 10 states have call predecessors, (11), 4 states have return successors, (9), 6 states have call predecessors, (9), 5 states have call successors, (9) [2022-02-15 00:38:35,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 00:38:35,144 INFO L93 Difference]: Finished difference Result 804 states and 980 transitions. [2022-02-15 00:38:35,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-02-15 00:38:35,145 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.2222222222222223) internal successors, (58), 9 states have internal predecessors, (58), 5 states have call successors, (11), 10 states have call predecessors, (11), 4 states have return successors, (9), 6 states have call predecessors, (9), 5 states have call successors, (9) Word has length 78 [2022-02-15 00:38:35,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 00:38:35,146 INFO L225 Difference]: With dead ends: 804 [2022-02-15 00:38:35,146 INFO L226 Difference]: Without dead ends: 764 [2022-02-15 00:38:35,146 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=271, Invalid=851, Unknown=0, NotChecked=0, Total=1122 [2022-02-15 00:38:35,146 INFO L933 BasicCegarLoop]: 453 mSDtfsCounter, 803 mSDsluCounter, 1327 mSDsCounter, 0 mSdLazyCounter, 3105 mSolverCounterSat, 318 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 805 SdHoareTripleChecker+Valid, 1780 SdHoareTripleChecker+Invalid, 3423 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 318 IncrementalHoareTripleChecker+Valid, 3105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-02-15 00:38:35,146 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [805 Valid, 1780 Invalid, 3423 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [318 Valid, 3105 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-02-15 00:38:35,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 764 states. [2022-02-15 00:38:35,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 764 to 365. [2022-02-15 00:38:35,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 365 states, 287 states have (on average 1.2473867595818815) internal successors, (358), 292 states have internal predecessors, (358), 39 states have call successors, (39), 35 states have call predecessors, (39), 38 states have return successors, (44), 39 states have call predecessors, (44), 35 states have call successors, (44) [2022-02-15 00:38:35,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 441 transitions. [2022-02-15 00:38:35,150 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 441 transitions. Word has length 78 [2022-02-15 00:38:35,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 00:38:35,150 INFO L470 AbstractCegarLoop]: Abstraction has 365 states and 441 transitions. [2022-02-15 00:38:35,150 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.2222222222222223) internal successors, (58), 9 states have internal predecessors, (58), 5 states have call successors, (11), 10 states have call predecessors, (11), 4 states have return successors, (9), 6 states have call predecessors, (9), 5 states have call successors, (9) [2022-02-15 00:38:35,150 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 441 transitions. [2022-02-15 00:38:35,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-02-15 00:38:35,151 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 00:38:35,151 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 00:38:35,151 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2022-02-15 00:38:35,151 INFO L402 AbstractCegarLoop]: === Iteration 73 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 00:38:35,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 00:38:35,152 INFO L85 PathProgramCache]: Analyzing trace with hash -1514865381, now seen corresponding path program 1 times [2022-02-15 00:38:35,152 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 00:38:35,152 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689045129] [2022-02-15 00:38:35,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 00:38:35,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 00:38:35,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:35,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 00:38:35,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:35,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 00:38:35,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:35,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-15 00:38:35,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:35,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-02-15 00:38:35,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:35,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-02-15 00:38:35,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:35,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-02-15 00:38:35,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:35,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-02-15 00:38:35,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:35,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-02-15 00:38:35,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:35,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 00:38:35,403 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 00:38:35,403 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689045129] [2022-02-15 00:38:35,403 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [689045129] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 00:38:35,403 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 00:38:35,404 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-02-15 00:38:35,404 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267449525] [2022-02-15 00:38:35,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 00:38:35,404 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-02-15 00:38:35,404 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 00:38:35,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-02-15 00:38:35,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=327, Unknown=0, NotChecked=0, Total=380 [2022-02-15 00:38:35,404 INFO L87 Difference]: Start difference. First operand 365 states and 441 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) [2022-02-15 00:38:36,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 00:38:36,233 INFO L93 Difference]: Finished difference Result 390 states and 476 transitions. [2022-02-15 00:38:36,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-02-15 00:38:36,233 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 [2022-02-15 00:38:36,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 00:38:36,234 INFO L225 Difference]: With dead ends: 390 [2022-02-15 00:38:36,234 INFO L226 Difference]: Without dead ends: 305 [2022-02-15 00:38:36,234 INFO L932 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 [2022-02-15 00:38:36,234 INFO L933 BasicCegarLoop]: 237 mSDtfsCounter, 192 mSDsluCounter, 1582 mSDsCounter, 0 mSdLazyCounter, 2193 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 193 SdHoareTripleChecker+Valid, 1819 SdHoareTripleChecker+Invalid, 2262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 2193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-02-15 00:38:36,234 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [193 Valid, 1819 Invalid, 2262 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 2193 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-02-15 00:38:36,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2022-02-15 00:38:36,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 288. [2022-02-15 00:38:36,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 288 states, 224 states have (on average 1.2678571428571428) internal successors, (284), 227 states have internal predecessors, (284), 31 states have call successors, (31), 29 states have call predecessors, (31), 32 states have return successors, (37), 32 states have call predecessors, (37), 28 states have call successors, (37) [2022-02-15 00:38:36,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 352 transitions. [2022-02-15 00:38:36,237 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 352 transitions. Word has length 79 [2022-02-15 00:38:36,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 00:38:36,237 INFO L470 AbstractCegarLoop]: Abstraction has 288 states and 352 transitions. [2022-02-15 00:38:36,237 INFO L471 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) [2022-02-15 00:38:36,237 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 352 transitions. [2022-02-15 00:38:36,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-02-15 00:38:36,238 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 00:38:36,238 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 00:38:36,238 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2022-02-15 00:38:36,238 INFO L402 AbstractCegarLoop]: === Iteration 74 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 00:38:36,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 00:38:36,238 INFO L85 PathProgramCache]: Analyzing trace with hash -1000162365, now seen corresponding path program 1 times [2022-02-15 00:38:36,238 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 00:38:36,238 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373017833] [2022-02-15 00:38:36,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 00:38:36,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 00:38:36,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:36,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 00:38:36,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:36,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 00:38:36,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:36,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-15 00:38:36,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:36,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-02-15 00:38:36,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:36,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 00:38:36,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:36,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-02-15 00:38:36,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:36,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-02-15 00:38:36,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:36,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 00:38:36,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:36,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-02-15 00:38:36,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:36,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-02-15 00:38:36,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:36,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 00:38:36,403 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 00:38:36,403 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373017833] [2022-02-15 00:38:36,403 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1373017833] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 00:38:36,403 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 00:38:36,403 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-02-15 00:38:36,403 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421376314] [2022-02-15 00:38:36,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 00:38:36,404 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-02-15 00:38:36,404 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 00:38:36,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-02-15 00:38:36,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2022-02-15 00:38:36,404 INFO L87 Difference]: Start difference. First operand 288 states and 352 transitions. Second operand has 12 states, 12 states have (on average 4.916666666666667) internal successors, (59), 5 states have internal predecessors, (59), 3 states have call successors, (14), 10 states have call predecessors, (14), 4 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) [2022-02-15 00:38:36,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 00:38:36,842 INFO L93 Difference]: Finished difference Result 296 states and 347 transitions. [2022-02-15 00:38:36,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-02-15 00:38:36,842 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.916666666666667) internal successors, (59), 5 states have internal predecessors, (59), 3 states have call successors, (14), 10 states have call predecessors, (14), 4 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) Word has length 83 [2022-02-15 00:38:36,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 00:38:36,843 INFO L225 Difference]: With dead ends: 296 [2022-02-15 00:38:36,843 INFO L226 Difference]: Without dead ends: 296 [2022-02-15 00:38:36,843 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=104, Invalid=238, Unknown=0, NotChecked=0, Total=342 [2022-02-15 00:38:36,843 INFO L933 BasicCegarLoop]: 221 mSDtfsCounter, 272 mSDsluCounter, 677 mSDsCounter, 0 mSdLazyCounter, 583 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 275 SdHoareTripleChecker+Valid, 898 SdHoareTripleChecker+Invalid, 702 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 583 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-15 00:38:36,844 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [275 Valid, 898 Invalid, 702 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 583 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-15 00:38:36,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2022-02-15 00:38:36,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 246. [2022-02-15 00:38:36,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 189 states have (on average 1.1904761904761905) internal successors, (225), 193 states have internal predecessors, (225), 29 states have call successors, (29), 26 states have call predecessors, (29), 27 states have return successors, (30), 27 states have call predecessors, (30), 27 states have call successors, (30) [2022-02-15 00:38:36,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 284 transitions. [2022-02-15 00:38:36,846 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 284 transitions. Word has length 83 [2022-02-15 00:38:36,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 00:38:36,846 INFO L470 AbstractCegarLoop]: Abstraction has 246 states and 284 transitions. [2022-02-15 00:38:36,846 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.916666666666667) internal successors, (59), 5 states have internal predecessors, (59), 3 states have call successors, (14), 10 states have call predecessors, (14), 4 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) [2022-02-15 00:38:36,846 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 284 transitions. [2022-02-15 00:38:36,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-02-15 00:38:36,847 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 00:38:36,847 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 00:38:36,847 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2022-02-15 00:38:36,847 INFO L402 AbstractCegarLoop]: === Iteration 75 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 00:38:36,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 00:38:36,847 INFO L85 PathProgramCache]: Analyzing trace with hash -2124626258, now seen corresponding path program 1 times [2022-02-15 00:38:36,847 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 00:38:36,847 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640481826] [2022-02-15 00:38:36,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 00:38:36,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 00:38:36,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:36,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 00:38:36,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:36,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 00:38:36,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:36,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-15 00:38:36,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:36,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-02-15 00:38:36,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:37,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-15 00:38:37,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:37,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 00:38:37,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:37,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-02-15 00:38:37,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:37,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-02-15 00:38:37,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:37,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 00:38:37,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:37,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-02-15 00:38:37,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:37,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-02-15 00:38:37,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:37,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-02-15 00:38:37,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:37,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 00:38:37,106 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 00:38:37,107 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [640481826] [2022-02-15 00:38:37,107 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [640481826] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 00:38:37,107 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 00:38:37,107 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-02-15 00:38:37,107 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601061487] [2022-02-15 00:38:37,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 00:38:37,107 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-15 00:38:37,107 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 00:38:37,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-15 00:38:37,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2022-02-15 00:38:37,108 INFO L87 Difference]: Start difference. First operand 246 states and 284 transitions. Second operand has 18 states, 18 states have (on average 4.055555555555555) internal successors, (73), 7 states have internal predecessors, (73), 4 states have call successors, (14), 11 states have call predecessors, (14), 3 states have return successors, (12), 5 states have call predecessors, (12), 3 states have call successors, (12) [2022-02-15 00:38:37,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 00:38:37,724 INFO L93 Difference]: Finished difference Result 301 states and 344 transitions. [2022-02-15 00:38:37,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-02-15 00:38:37,725 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.055555555555555) internal successors, (73), 7 states have internal predecessors, (73), 4 states have call successors, (14), 11 states have call predecessors, (14), 3 states have return successors, (12), 5 states have call predecessors, (12), 3 states have call successors, (12) Word has length 99 [2022-02-15 00:38:37,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 00:38:37,725 INFO L225 Difference]: With dead ends: 301 [2022-02-15 00:38:37,725 INFO L226 Difference]: Without dead ends: 272 [2022-02-15 00:38:37,727 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=149, Invalid=721, Unknown=0, NotChecked=0, Total=870 [2022-02-15 00:38:37,727 INFO L933 BasicCegarLoop]: 172 mSDtfsCounter, 397 mSDsluCounter, 981 mSDsCounter, 0 mSdLazyCounter, 888 mSolverCounterSat, 148 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 402 SdHoareTripleChecker+Valid, 1153 SdHoareTripleChecker+Invalid, 1036 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 148 IncrementalHoareTripleChecker+Valid, 888 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-15 00:38:37,727 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [402 Valid, 1153 Invalid, 1036 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [148 Valid, 888 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-15 00:38:37,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2022-02-15 00:38:37,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 245. [2022-02-15 00:38:37,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 245 states, 188 states have (on average 1.175531914893617) internal successors, (221), 192 states have internal predecessors, (221), 29 states have call successors, (29), 26 states have call predecessors, (29), 27 states have return successors, (30), 27 states have call predecessors, (30), 27 states have call successors, (30) [2022-02-15 00:38:37,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 280 transitions. [2022-02-15 00:38:37,730 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 280 transitions. Word has length 99 [2022-02-15 00:38:37,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 00:38:37,730 INFO L470 AbstractCegarLoop]: Abstraction has 245 states and 280 transitions. [2022-02-15 00:38:37,730 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.055555555555555) internal successors, (73), 7 states have internal predecessors, (73), 4 states have call successors, (14), 11 states have call predecessors, (14), 3 states have return successors, (12), 5 states have call predecessors, (12), 3 states have call successors, (12) [2022-02-15 00:38:37,730 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 280 transitions. [2022-02-15 00:38:37,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-02-15 00:38:37,731 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 00:38:37,731 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 00:38:37,731 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2022-02-15 00:38:37,731 INFO L402 AbstractCegarLoop]: === Iteration 76 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 00:38:37,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 00:38:37,731 INFO L85 PathProgramCache]: Analyzing trace with hash 515298531, now seen corresponding path program 1 times [2022-02-15 00:38:37,731 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 00:38:37,731 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836159376] [2022-02-15 00:38:37,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 00:38:37,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 00:38:37,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:37,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 00:38:37,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:37,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 00:38:37,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:37,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-15 00:38:37,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:37,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-02-15 00:38:37,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:37,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-15 00:38:37,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:37,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 00:38:37,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:37,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-02-15 00:38:37,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:37,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-02-15 00:38:37,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:37,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 00:38:37,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:37,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-02-15 00:38:37,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:37,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-02-15 00:38:37,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:37,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-02-15 00:38:37,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:37,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 00:38:37,999 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 00:38:37,999 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836159376] [2022-02-15 00:38:37,999 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [836159376] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 00:38:37,999 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 00:38:37,999 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-02-15 00:38:37,999 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374107442] [2022-02-15 00:38:37,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 00:38:37,999 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-02-15 00:38:38,000 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 00:38:38,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-02-15 00:38:38,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=275, Unknown=0, NotChecked=0, Total=342 [2022-02-15 00:38:38,000 INFO L87 Difference]: Start difference. First operand 245 states and 280 transitions. Second operand has 19 states, 19 states have (on average 3.9473684210526314) internal successors, (75), 9 states have internal predecessors, (75), 5 states have call successors, (14), 11 states have call predecessors, (14), 4 states have return successors, (12), 5 states have call predecessors, (12), 4 states have call successors, (12) [2022-02-15 00:38:39,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 00:38:39,484 INFO L93 Difference]: Finished difference Result 488 states and 556 transitions. [2022-02-15 00:38:39,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-02-15 00:38:39,484 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.9473684210526314) internal successors, (75), 9 states have internal predecessors, (75), 5 states have call successors, (14), 11 states have call predecessors, (14), 4 states have return successors, (12), 5 states have call predecessors, (12), 4 states have call successors, (12) Word has length 101 [2022-02-15 00:38:39,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 00:38:39,485 INFO L225 Difference]: With dead ends: 488 [2022-02-15 00:38:39,485 INFO L226 Difference]: Without dead ends: 483 [2022-02-15 00:38:39,485 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 239 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=245, Invalid=1315, Unknown=0, NotChecked=0, Total=1560 [2022-02-15 00:38:39,486 INFO L933 BasicCegarLoop]: 278 mSDtfsCounter, 831 mSDsluCounter, 839 mSDsCounter, 0 mSdLazyCounter, 2678 mSolverCounterSat, 304 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 832 SdHoareTripleChecker+Valid, 1117 SdHoareTripleChecker+Invalid, 2982 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 304 IncrementalHoareTripleChecker+Valid, 2678 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-02-15 00:38:39,486 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [832 Valid, 1117 Invalid, 2982 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [304 Valid, 2678 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-02-15 00:38:39,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 483 states. [2022-02-15 00:38:39,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 483 to 360. [2022-02-15 00:38:39,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 360 states, 278 states have (on average 1.169064748201439) internal successors, (325), 284 states have internal predecessors, (325), 41 states have call successors, (41), 38 states have call predecessors, (41), 40 states have return successors, (43), 38 states have call predecessors, (43), 39 states have call successors, (43) [2022-02-15 00:38:39,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 360 states to 360 states and 409 transitions. [2022-02-15 00:38:39,489 INFO L78 Accepts]: Start accepts. Automaton has 360 states and 409 transitions. Word has length 101 [2022-02-15 00:38:39,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 00:38:39,489 INFO L470 AbstractCegarLoop]: Abstraction has 360 states and 409 transitions. [2022-02-15 00:38:39,490 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.9473684210526314) internal successors, (75), 9 states have internal predecessors, (75), 5 states have call successors, (14), 11 states have call predecessors, (14), 4 states have return successors, (12), 5 states have call predecessors, (12), 4 states have call successors, (12) [2022-02-15 00:38:39,490 INFO L276 IsEmpty]: Start isEmpty. Operand 360 states and 409 transitions. [2022-02-15 00:38:39,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-02-15 00:38:39,490 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 00:38:39,490 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 00:38:39,491 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2022-02-15 00:38:39,491 INFO L402 AbstractCegarLoop]: === Iteration 77 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 00:38:39,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 00:38:39,491 INFO L85 PathProgramCache]: Analyzing trace with hash 1453830146, now seen corresponding path program 1 times [2022-02-15 00:38:39,491 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 00:38:39,491 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602933826] [2022-02-15 00:38:39,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 00:38:39,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 00:38:39,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:39,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 00:38:39,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:39,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 00:38:39,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:39,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-15 00:38:39,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:39,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-02-15 00:38:39,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:39,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-15 00:38:39,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:39,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 00:38:39,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:39,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-02-15 00:38:39,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:39,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-02-15 00:38:39,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:39,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 00:38:39,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:39,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-02-15 00:38:39,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:39,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-02-15 00:38:39,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:39,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-02-15 00:38:39,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:39,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 00:38:39,739 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 00:38:39,739 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602933826] [2022-02-15 00:38:39,739 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1602933826] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 00:38:39,739 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 00:38:39,739 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-15 00:38:39,739 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090422938] [2022-02-15 00:38:39,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 00:38:39,740 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-02-15 00:38:39,740 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 00:38:39,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-02-15 00:38:39,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2022-02-15 00:38:39,740 INFO L87 Difference]: Start difference. First operand 360 states and 409 transitions. Second operand has 17 states, 17 states have (on average 4.411764705882353) internal successors, (75), 6 states have internal predecessors, (75), 3 states have call successors, (14), 11 states have call predecessors, (14), 3 states have return successors, (12), 4 states have call predecessors, (12), 2 states have call successors, (12) [2022-02-15 00:38:40,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 00:38:40,035 INFO L93 Difference]: Finished difference Result 398 states and 455 transitions. [2022-02-15 00:38:40,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-02-15 00:38:40,036 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 4.411764705882353) internal successors, (75), 6 states have internal predecessors, (75), 3 states have call successors, (14), 11 states have call predecessors, (14), 3 states have return successors, (12), 4 states have call predecessors, (12), 2 states have call successors, (12) Word has length 101 [2022-02-15 00:38:40,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 00:38:40,036 INFO L225 Difference]: With dead ends: 398 [2022-02-15 00:38:40,036 INFO L226 Difference]: Without dead ends: 345 [2022-02-15 00:38:40,037 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=76, Invalid=266, Unknown=0, NotChecked=0, Total=342 [2022-02-15 00:38:40,037 INFO L933 BasicCegarLoop]: 175 mSDtfsCounter, 118 mSDsluCounter, 832 mSDsCounter, 0 mSdLazyCounter, 622 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 1007 SdHoareTripleChecker+Invalid, 681 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 622 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-15 00:38:40,037 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [119 Valid, 1007 Invalid, 681 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 622 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-15 00:38:40,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2022-02-15 00:38:40,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 146. [2022-02-15 00:38:40,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 112 states have (on average 1.1428571428571428) internal successors, (128), 114 states have internal predecessors, (128), 17 states have call successors, (17), 17 states have call predecessors, (17), 16 states have return successors, (16), 15 states have call predecessors, (16), 15 states have call successors, (16) [2022-02-15 00:38:40,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 161 transitions. [2022-02-15 00:38:40,039 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 161 transitions. Word has length 101 [2022-02-15 00:38:40,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 00:38:40,039 INFO L470 AbstractCegarLoop]: Abstraction has 146 states and 161 transitions. [2022-02-15 00:38:40,039 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 4.411764705882353) internal successors, (75), 6 states have internal predecessors, (75), 3 states have call successors, (14), 11 states have call predecessors, (14), 3 states have return successors, (12), 4 states have call predecessors, (12), 2 states have call successors, (12) [2022-02-15 00:38:40,039 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 161 transitions. [2022-02-15 00:38:40,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-02-15 00:38:40,040 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 00:38:40,040 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 00:38:40,040 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2022-02-15 00:38:40,040 INFO L402 AbstractCegarLoop]: === Iteration 78 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 00:38:40,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 00:38:40,040 INFO L85 PathProgramCache]: Analyzing trace with hash -1992976348, now seen corresponding path program 1 times [2022-02-15 00:38:40,040 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 00:38:40,040 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026544142] [2022-02-15 00:38:40,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 00:38:40,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 00:38:40,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:40,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 00:38:40,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:40,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 00:38:40,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:40,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-15 00:38:40,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:40,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-02-15 00:38:40,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:40,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-02-15 00:38:40,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:40,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-02-15 00:38:40,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:40,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-02-15 00:38:40,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:40,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-02-15 00:38:40,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:40,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 00:38:40,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:40,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-02-15 00:38:40,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:40,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-02-15 00:38:40,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:40,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-02-15 00:38:40,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:40,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-02-15 00:38:40,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:40,245 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-02-15 00:38:40,245 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 00:38:40,245 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026544142] [2022-02-15 00:38:40,245 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1026544142] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 00:38:40,245 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 00:38:40,245 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-02-15 00:38:40,245 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098806681] [2022-02-15 00:38:40,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 00:38:40,246 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-02-15 00:38:40,246 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 00:38:40,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-02-15 00:38:40,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2022-02-15 00:38:40,246 INFO L87 Difference]: Start difference. First operand 146 states and 161 transitions. Second operand has 13 states, 13 states have (on average 6.153846153846154) internal successors, (80), 4 states have internal predecessors, (80), 4 states have call successors, (15), 11 states have call predecessors, (15), 3 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2022-02-15 00:38:40,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 00:38:40,539 INFO L93 Difference]: Finished difference Result 158 states and 174 transitions. [2022-02-15 00:38:40,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-02-15 00:38:40,540 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 6.153846153846154) internal successors, (80), 4 states have internal predecessors, (80), 4 states have call successors, (15), 11 states have call predecessors, (15), 3 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) Word has length 115 [2022-02-15 00:38:40,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 00:38:40,540 INFO L225 Difference]: With dead ends: 158 [2022-02-15 00:38:40,540 INFO L226 Difference]: Without dead ends: 158 [2022-02-15 00:38:40,540 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=107, Invalid=235, Unknown=0, NotChecked=0, Total=342 [2022-02-15 00:38:40,541 INFO L933 BasicCegarLoop]: 112 mSDtfsCounter, 268 mSDsluCounter, 248 mSDsCounter, 0 mSdLazyCounter, 270 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 271 SdHoareTripleChecker+Valid, 360 SdHoareTripleChecker+Invalid, 384 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 270 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-15 00:38:40,541 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [271 Valid, 360 Invalid, 384 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 270 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-15 00:38:40,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2022-02-15 00:38:40,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 152. [2022-02-15 00:38:40,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 117 states have (on average 1.1196581196581197) internal successors, (131), 119 states have internal predecessors, (131), 18 states have call successors, (18), 17 states have call predecessors, (18), 16 states have return successors, (17), 16 states have call predecessors, (17), 16 states have call successors, (17) [2022-02-15 00:38:40,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 166 transitions. [2022-02-15 00:38:40,542 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 166 transitions. Word has length 115 [2022-02-15 00:38:40,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 00:38:40,542 INFO L470 AbstractCegarLoop]: Abstraction has 152 states and 166 transitions. [2022-02-15 00:38:40,543 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.153846153846154) internal successors, (80), 4 states have internal predecessors, (80), 4 states have call successors, (15), 11 states have call predecessors, (15), 3 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2022-02-15 00:38:40,543 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 166 transitions. [2022-02-15 00:38:40,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-02-15 00:38:40,543 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 00:38:40,543 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 00:38:40,543 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2022-02-15 00:38:40,543 INFO L402 AbstractCegarLoop]: === Iteration 79 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 00:38:40,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 00:38:40,544 INFO L85 PathProgramCache]: Analyzing trace with hash 1647793681, now seen corresponding path program 1 times [2022-02-15 00:38:40,544 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 00:38:40,544 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794563344] [2022-02-15 00:38:40,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 00:38:40,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 00:38:40,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:40,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 00:38:40,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:40,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 00:38:40,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:40,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-15 00:38:40,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:40,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-02-15 00:38:40,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:40,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-02-15 00:38:40,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:40,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-02-15 00:38:40,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:40,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-02-15 00:38:40,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:40,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-02-15 00:38:40,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:40,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 00:38:40,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:40,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-02-15 00:38:40,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:40,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-02-15 00:38:40,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:40,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-02-15 00:38:40,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:40,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-02-15 00:38:40,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:40,753 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-02-15 00:38:40,753 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 00:38:40,754 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1794563344] [2022-02-15 00:38:40,754 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1794563344] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 00:38:40,754 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 00:38:40,754 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-02-15 00:38:40,754 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029868508] [2022-02-15 00:38:40,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 00:38:40,754 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-15 00:38:40,754 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 00:38:40,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-15 00:38:40,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2022-02-15 00:38:40,755 INFO L87 Difference]: Start difference. First operand 152 states and 166 transitions. Second operand has 18 states, 18 states have (on average 4.5) internal successors, (81), 8 states have internal predecessors, (81), 5 states have call successors, (15), 11 states have call predecessors, (15), 3 states have return successors, (13), 6 states have call predecessors, (13), 4 states have call successors, (13) [2022-02-15 00:38:41,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 00:38:41,391 INFO L93 Difference]: Finished difference Result 255 states and 277 transitions. [2022-02-15 00:38:41,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-02-15 00:38:41,391 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.5) internal successors, (81), 8 states have internal predecessors, (81), 5 states have call successors, (15), 11 states have call predecessors, (15), 3 states have return successors, (13), 6 states have call predecessors, (13), 4 states have call successors, (13) Word has length 116 [2022-02-15 00:38:41,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 00:38:41,392 INFO L225 Difference]: With dead ends: 255 [2022-02-15 00:38:41,392 INFO L226 Difference]: Without dead ends: 152 [2022-02-15 00:38:41,392 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 229 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=225, Invalid=1181, Unknown=0, NotChecked=0, Total=1406 [2022-02-15 00:38:41,392 INFO L933 BasicCegarLoop]: 107 mSDtfsCounter, 436 mSDsluCounter, 247 mSDsCounter, 0 mSdLazyCounter, 838 mSolverCounterSat, 163 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 437 SdHoareTripleChecker+Valid, 354 SdHoareTripleChecker+Invalid, 1001 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 163 IncrementalHoareTripleChecker+Valid, 838 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-15 00:38:41,392 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [437 Valid, 354 Invalid, 1001 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [163 Valid, 838 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-15 00:38:41,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2022-02-15 00:38:41,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 152. [2022-02-15 00:38:41,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 117 states have (on average 1.1111111111111112) internal successors, (130), 119 states have internal predecessors, (130), 18 states have call successors, (18), 17 states have call predecessors, (18), 16 states have return successors, (17), 16 states have call predecessors, (17), 16 states have call successors, (17) [2022-02-15 00:38:41,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 165 transitions. [2022-02-15 00:38:41,394 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 165 transitions. Word has length 116 [2022-02-15 00:38:41,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 00:38:41,394 INFO L470 AbstractCegarLoop]: Abstraction has 152 states and 165 transitions. [2022-02-15 00:38:41,394 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.5) internal successors, (81), 8 states have internal predecessors, (81), 5 states have call successors, (15), 11 states have call predecessors, (15), 3 states have return successors, (13), 6 states have call predecessors, (13), 4 states have call successors, (13) [2022-02-15 00:38:41,394 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 165 transitions. [2022-02-15 00:38:41,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-02-15 00:38:41,394 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 00:38:41,394 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 00:38:41,395 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2022-02-15 00:38:41,395 INFO L402 AbstractCegarLoop]: === Iteration 80 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 00:38:41,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 00:38:41,395 INFO L85 PathProgramCache]: Analyzing trace with hash 1707014418, now seen corresponding path program 1 times [2022-02-15 00:38:41,395 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 00:38:41,395 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690321175] [2022-02-15 00:38:41,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 00:38:41,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 00:38:41,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:41,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 00:38:41,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:41,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 00:38:41,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:41,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-15 00:38:41,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:41,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-02-15 00:38:41,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:41,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-02-15 00:38:41,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:41,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-02-15 00:38:41,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:41,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-02-15 00:38:41,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:41,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-02-15 00:38:41,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:41,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 00:38:41,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:41,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-02-15 00:38:41,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:41,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-02-15 00:38:41,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:41,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-02-15 00:38:41,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:41,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-02-15 00:38:41,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:38:41,693 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-02-15 00:38:41,693 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 00:38:41,693 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690321175] [2022-02-15 00:38:41,693 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [690321175] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 00:38:41,693 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 00:38:41,693 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-02-15 00:38:41,693 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412388570] [2022-02-15 00:38:41,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 00:38:41,694 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-02-15 00:38:41,694 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 00:38:41,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-02-15 00:38:41,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=311, Unknown=0, NotChecked=0, Total=380 [2022-02-15 00:38:41,694 INFO L87 Difference]: Start difference. First operand 152 states and 165 transitions. Second operand has 20 states, 20 states have (on average 4.05) internal successors, (81), 9 states have internal predecessors, (81), 5 states have call successors, (15), 11 states have call predecessors, (15), 3 states have return successors, (13), 6 states have call predecessors, (13), 4 states have call successors, (13) [2022-02-15 00:38:42,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 00:38:42,341 INFO L93 Difference]: Finished difference Result 149 states and 162 transitions. [2022-02-15 00:38:42,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-02-15 00:38:42,341 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 4.05) internal successors, (81), 9 states have internal predecessors, (81), 5 states have call successors, (15), 11 states have call predecessors, (15), 3 states have return successors, (13), 6 states have call predecessors, (13), 4 states have call successors, (13) Word has length 116 [2022-02-15 00:38:42,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 00:38:42,342 INFO L225 Difference]: With dead ends: 149 [2022-02-15 00:38:42,342 INFO L226 Difference]: Without dead ends: 0 [2022-02-15 00:38:42,342 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=159, Invalid=833, Unknown=0, NotChecked=0, Total=992 [2022-02-15 00:38:42,342 INFO L933 BasicCegarLoop]: 95 mSDtfsCounter, 210 mSDsluCounter, 235 mSDsCounter, 0 mSdLazyCounter, 1127 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 210 SdHoareTripleChecker+Valid, 330 SdHoareTripleChecker+Invalid, 1209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 1127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-15 00:38:42,342 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [210 Valid, 330 Invalid, 1209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 1127 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-15 00:38:42,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-02-15 00:38:42,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-02-15 00:38:42,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 00:38:42,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-02-15 00:38:42,343 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 116 [2022-02-15 00:38:42,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 00:38:42,343 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-02-15 00:38:42,343 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 4.05) internal successors, (81), 9 states have internal predecessors, (81), 5 states have call successors, (15), 11 states have call predecessors, (15), 3 states have return successors, (13), 6 states have call predecessors, (13), 4 states have call successors, (13) [2022-02-15 00:38:42,343 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-02-15 00:38:42,343 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-02-15 00:38:42,345 INFO L764 garLoopResultBuilder]: Registering result SAFE for location errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-02-15 00:38:42,345 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2022-02-15 00:38:42,347 INFO L732 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 00:38:42,348 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-02-15 00:38:42,349 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.02 12:38:42 BasicIcfg [2022-02-15 00:38:42,350 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-02-15 00:38:42,350 INFO L158 Benchmark]: Toolchain (without parser) took 141347.31ms. Allocated memory was 255.9MB in the beginning and 417.3MB in the end (delta: 161.5MB). Free memory was 204.5MB in the beginning and 320.1MB in the end (delta: -115.5MB). Peak memory consumption was 46.6MB. Max. memory is 8.0GB. [2022-02-15 00:38:42,350 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 255.9MB. Free memory is still 223.0MB. There was no memory consumed. Max. memory is 8.0GB. [2022-02-15 00:38:42,350 INFO L158 Benchmark]: CACSL2BoogieTranslator took 467.57ms. Allocated memory was 255.9MB in the beginning and 311.4MB in the end (delta: 55.6MB). Free memory was 204.4MB in the beginning and 269.8MB in the end (delta: -65.4MB). Peak memory consumption was 14.6MB. Max. memory is 8.0GB. [2022-02-15 00:38:42,350 INFO L158 Benchmark]: Boogie Preprocessor took 120.21ms. Allocated memory is still 311.4MB. Free memory was 269.8MB in the beginning and 264.6MB in the end (delta: 5.2MB). Peak memory consumption was 5.2MB. Max. memory is 8.0GB. [2022-02-15 00:38:42,350 INFO L158 Benchmark]: RCFGBuilder took 1033.19ms. Allocated memory is still 311.4MB. Free memory was 264.6MB in the beginning and 199.0MB in the end (delta: 65.5MB). Peak memory consumption was 65.0MB. Max. memory is 8.0GB. [2022-02-15 00:38:42,350 INFO L158 Benchmark]: IcfgTransformer took 44.03ms. Allocated memory is still 311.4MB. Free memory was 199.0MB in the beginning and 191.2MB in the end (delta: 7.9MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. [2022-02-15 00:38:42,350 INFO L158 Benchmark]: TraceAbstraction took 139677.00ms. Allocated memory was 311.4MB in the beginning and 417.3MB in the end (delta: 105.9MB). Free memory was 190.7MB in the beginning and 320.1MB in the end (delta: -129.4MB). There was no memory consumed. Max. memory is 8.0GB. [2022-02-15 00:38:42,351 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 255.9MB. Free memory is still 223.0MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 467.57ms. Allocated memory was 255.9MB in the beginning and 311.4MB in the end (delta: 55.6MB). Free memory was 204.4MB in the beginning and 269.8MB in the end (delta: -65.4MB). Peak memory consumption was 14.6MB. Max. memory is 8.0GB. * Boogie Preprocessor took 120.21ms. Allocated memory is still 311.4MB. Free memory was 269.8MB in the beginning and 264.6MB in the end (delta: 5.2MB). Peak memory consumption was 5.2MB. Max. memory is 8.0GB. * RCFGBuilder took 1033.19ms. Allocated memory is still 311.4MB. Free memory was 264.6MB in the beginning and 199.0MB in the end (delta: 65.5MB). Peak memory consumption was 65.0MB. Max. memory is 8.0GB. * IcfgTransformer took 44.03ms. Allocated memory is still 311.4MB. Free memory was 199.0MB in the beginning and 191.2MB in the end (delta: 7.9MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. * TraceAbstraction took 139677.00ms. Allocated memory was 311.4MB in the beginning and 417.3MB in the end (delta: 105.9MB). Free memory was 190.7MB in the beginning and 320.1MB in the end (delta: -129.4MB). There was no memory consumed. 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 - PositiveResult [Line: 59]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 30 procedures, 515 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 139.6s, OverallIterations: 80, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 122.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 77767 SdHoareTripleChecker+Valid, 108.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 77342 mSDsluCounter, 131675 SdHoareTripleChecker+Invalid, 92.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 89898 mSDsCounter, 27263 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 203927 IncrementalHoareTripleChecker+Invalid, 231190 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 27263 mSolverCounterUnsat, 41777 mSDtfsCounter, 203927 mSolverCounterSat, 1.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2367 GetRequests, 978 SyntacticMatches, 11 SemanticMatches, 1378 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3622 ImplicationChecksByTransitivity, 18.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=997occurred in iteration=62, InterpolantAutomatonStates: 1084, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.8s AutomataMinimizationTime, 80 MinimizatonAttempts, 9496 StatesRemovedByMinimization, 77 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 14.5s InterpolantComputationTime, 5232 NumberOfCodeBlocks, 5232 NumberOfCodeBlocksAsserted, 81 NumberOfCheckSat, 5151 ConstructedInterpolants, 0 QuantifiedInterpolants, 25251 SizeOfPredicates, 0 NumberOfNonLiveVariables, 908 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 81 InterpolantComputations, 80 PerfectInterpolantSequences, 43/45 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-02-15 00:38:42,377 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...