/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/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ntdrivers-simplified/cdaudio_simpl1.cil-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-5d317bd [2022-03-18 16:06:40,110 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-18 16:06:40,112 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-18 16:06:40,159 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-03-18 16:06:40,160 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-03-18 16:06:40,161 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-03-18 16:06:40,163 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-03-18 16:06:40,166 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-03-18 16:06:40,167 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-03-18 16:06:40,171 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-03-18 16:06:40,172 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-03-18 16:06:40,173 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-03-18 16:06:40,173 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-03-18 16:06:40,175 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-03-18 16:06:40,178 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-03-18 16:06:40,180 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-03-18 16:06:40,181 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-03-18 16:06:40,181 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-03-18 16:06:40,183 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-03-18 16:06:40,188 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-03-18 16:06:40,190 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-03-18 16:06:40,192 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-03-18 16:06:40,192 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-03-18 16:06:40,193 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-03-18 16:06:40,194 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-03-18 16:06:40,200 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-03-18 16:06:40,201 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-03-18 16:06:40,201 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-03-18 16:06:40,202 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-03-18 16:06:40,202 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-03-18 16:06:40,203 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-03-18 16:06:40,203 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-03-18 16:06:40,205 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-03-18 16:06:40,205 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-03-18 16:06:40,206 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-03-18 16:06:40,207 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-03-18 16:06:40,207 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-03-18 16:06:40,207 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-03-18 16:06:40,208 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-03-18 16:06:40,208 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-18 16:06:40,208 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-18 16:06:40,209 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-18 16:06:40,210 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2022-03-18 16:06:40,238 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-18 16:06:40,239 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-18 16:06:40,239 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-03-18 16:06:40,239 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-03-18 16:06:40,240 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-03-18 16:06:40,240 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-03-18 16:06:40,240 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-03-18 16:06:40,240 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-03-18 16:06:40,240 INFO L138 SettingsManager]: * Use SBE=true [2022-03-18 16:06:40,241 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-18 16:06:40,241 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-18 16:06:40,241 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-18 16:06:40,242 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-18 16:06:40,242 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-18 16:06:40,242 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-18 16:06:40,242 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-18 16:06:40,242 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-18 16:06:40,243 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-18 16:06:40,243 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-18 16:06:40,243 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-18 16:06:40,243 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-18 16:06:40,244 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-18 16:06:40,244 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-18 16:06:40,244 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-18 16:06:40,244 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-18 16:06:40,244 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-18 16:06:40,244 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-03-18 16:06:40,244 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-03-18 16:06:40,245 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-18 16:06:40,245 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-03-18 16:06:40,245 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-03-18 16:06:40,245 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-03-18 16:06:40,245 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-18 16:06:40,245 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-03-18 16:06:40,460 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-18 16:06:40,482 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-18 16:06:40,484 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-18 16:06:40,485 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-18 16:06:40,486 INFO L275 PluginConnector]: CDTParser initialized [2022-03-18 16:06:40,487 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ntdrivers-simplified/cdaudio_simpl1.cil-1.c [2022-03-18 16:06:40,537 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d61997ae4/053911ba8ec54aeead57a073bb089051/FLAGa95b500b6 [2022-03-18 16:06:41,078 INFO L306 CDTParser]: Found 1 translation units. [2022-03-18 16:06:41,080 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ntdrivers-simplified/cdaudio_simpl1.cil-1.c [2022-03-18 16:06:41,097 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d61997ae4/053911ba8ec54aeead57a073bb089051/FLAGa95b500b6 [2022-03-18 16:06:41,342 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d61997ae4/053911ba8ec54aeead57a073bb089051 [2022-03-18 16:06:41,344 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-18 16:06:41,345 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-03-18 16:06:41,347 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-18 16:06:41,347 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-18 16:06:41,353 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-18 16:06:41,353 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.03 04:06:41" (1/1) ... [2022-03-18 16:06:41,354 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2aefce01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 04:06:41, skipping insertion in model container [2022-03-18 16:06:41,354 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.03 04:06:41" (1/1) ... [2022-03-18 16:06:41,360 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-18 16:06:41,419 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-18 16:06:41,595 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ntdrivers-simplified/cdaudio_simpl1.cil-1.c[2074,2087] [2022-03-18 16:06:41,741 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-18 16:06:41,747 INFO L203 MainTranslator]: Completed pre-run [2022-03-18 16:06:41,759 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ntdrivers-simplified/cdaudio_simpl1.cil-1.c[2074,2087] [2022-03-18 16:06:41,873 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-18 16:06:41,886 INFO L208 MainTranslator]: Completed translation [2022-03-18 16:06:41,886 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 04:06:41 WrapperNode [2022-03-18 16:06:41,886 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-18 16:06:41,887 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-18 16:06:41,887 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-18 16:06:41,887 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-18 16:06:41,897 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 04:06:41" (1/1) ... [2022-03-18 16:06:41,899 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 04:06:41" (1/1) ... [2022-03-18 16:06:41,927 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 04:06:41" (1/1) ... [2022-03-18 16:06:41,928 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 04:06:41" (1/1) ... [2022-03-18 16:06:41,973 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 04:06:41" (1/1) ... [2022-03-18 16:06:41,985 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 04:06:41" (1/1) ... [2022-03-18 16:06:41,992 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 04:06:41" (1/1) ... [2022-03-18 16:06:42,000 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-18 16:06:42,001 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-18 16:06:42,001 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-18 16:06:42,001 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-18 16:06:42,002 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 04:06:41" (1/1) ... [2022-03-18 16:06:42,007 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-18 16:06:42,018 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 16:06:42,041 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-03-18 16:06:42,067 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-03-18 16:06:42,087 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-03-18 16:06:42,088 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-18 16:06:42,088 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-03-18 16:06:42,088 INFO L138 BoogieDeclarations]: Found implementation of procedure errorFn [2022-03-18 16:06:42,089 INFO L138 BoogieDeclarations]: Found implementation of procedure _BLAST_init [2022-03-18 16:06:42,089 INFO L138 BoogieDeclarations]: Found implementation of procedure SendSrbSynchronous [2022-03-18 16:06:42,089 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioSignalCompletion [2022-03-18 16:06:42,089 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioStartDevice [2022-03-18 16:06:42,089 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioPnp [2022-03-18 16:06:42,089 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioDeviceControl [2022-03-18 16:06:42,090 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioSendToNextDriver [2022-03-18 16:06:42,090 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioIsPlayActive [2022-03-18 16:06:42,090 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudio535DeviceControl [2022-03-18 16:06:42,090 INFO L138 BoogieDeclarations]: Found implementation of procedure AG_SetStatusAndReturn [2022-03-18 16:06:42,090 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudio435DeviceControl [2022-03-18 16:06:42,090 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioAtapiDeviceControl [2022-03-18 16:06:42,090 INFO L138 BoogieDeclarations]: Found implementation of procedure HpCdrProcessLastSession [2022-03-18 16:06:42,090 INFO L138 BoogieDeclarations]: Found implementation of procedure HPCdrCompletion [2022-03-18 16:06:42,091 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioHPCdrDeviceControl [2022-03-18 16:06:42,091 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioForwardIrpSynchronous [2022-03-18 16:06:42,091 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioUnload [2022-03-18 16:06:42,091 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioPower [2022-03-18 16:06:42,091 INFO L138 BoogieDeclarations]: Found implementation of procedure stub_driver_init [2022-03-18 16:06:42,091 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-03-18 16:06:42,091 INFO L138 BoogieDeclarations]: Found implementation of procedure stubMoreProcessingRequired [2022-03-18 16:06:42,091 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCallDriver [2022-03-18 16:06:42,091 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCompleteRequest [2022-03-18 16:06:42,091 INFO L138 BoogieDeclarations]: Found implementation of procedure KeSetEvent [2022-03-18 16:06:42,091 INFO L138 BoogieDeclarations]: Found implementation of procedure KeWaitForSingleObject [2022-03-18 16:06:42,091 INFO L138 BoogieDeclarations]: Found implementation of procedure PoCallDriver [2022-03-18 16:06:42,092 INFO L138 BoogieDeclarations]: Found implementation of procedure ZwClose [2022-03-18 16:06:42,092 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-03-18 16:06:42,092 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-03-18 16:06:42,092 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-03-18 16:06:42,092 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-18 16:06:42,092 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2022-03-18 16:06:42,092 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-03-18 16:06:42,092 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2022-03-18 16:06:42,092 INFO L130 BoogieDeclarations]: Found specification of procedure SendSrbSynchronous [2022-03-18 16:06:42,092 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioSignalCompletion [2022-03-18 16:06:42,092 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioStartDevice [2022-03-18 16:06:42,092 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioPnp [2022-03-18 16:06:42,093 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioDeviceControl [2022-03-18 16:06:42,093 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioSendToNextDriver [2022-03-18 16:06:42,093 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioIsPlayActive [2022-03-18 16:06:42,093 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudio535DeviceControl [2022-03-18 16:06:42,093 INFO L130 BoogieDeclarations]: Found specification of procedure AG_SetStatusAndReturn [2022-03-18 16:06:42,093 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudio435DeviceControl [2022-03-18 16:06:42,093 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioAtapiDeviceControl [2022-03-18 16:06:42,093 INFO L130 BoogieDeclarations]: Found specification of procedure HPCdrCompletion [2022-03-18 16:06:42,093 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioHPCdrDeviceControl [2022-03-18 16:06:42,093 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioForwardIrpSynchronous [2022-03-18 16:06:42,093 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioPower [2022-03-18 16:06:42,094 INFO L130 BoogieDeclarations]: Found specification of procedure IofCallDriver [2022-03-18 16:06:42,094 INFO L130 BoogieDeclarations]: Found specification of procedure KeSetEvent [2022-03-18 16:06:42,094 INFO L130 BoogieDeclarations]: Found specification of procedure KeWaitForSingleObject [2022-03-18 16:06:42,094 INFO L130 BoogieDeclarations]: Found specification of procedure PoCallDriver [2022-03-18 16:06:42,094 INFO L130 BoogieDeclarations]: Found specification of procedure ZwClose [2022-03-18 16:06:42,094 INFO L130 BoogieDeclarations]: Found specification of procedure IofCompleteRequest [2022-03-18 16:06:42,094 INFO L130 BoogieDeclarations]: Found specification of procedure errorFn [2022-03-18 16:06:42,095 INFO L130 BoogieDeclarations]: Found specification of procedure _BLAST_init [2022-03-18 16:06:42,095 INFO L130 BoogieDeclarations]: Found specification of procedure HpCdrProcessLastSession [2022-03-18 16:06:42,095 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioUnload [2022-03-18 16:06:42,095 INFO L130 BoogieDeclarations]: Found specification of procedure stub_driver_init [2022-03-18 16:06:42,095 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-03-18 16:06:42,095 INFO L130 BoogieDeclarations]: Found specification of procedure stubMoreProcessingRequired [2022-03-18 16:06:42,096 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-03-18 16:06:42,096 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-18 16:06:42,096 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-18 16:06:42,096 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-18 16:06:42,096 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-18 16:06:42,096 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-18 16:06:42,328 INFO L234 CfgBuilder]: Building ICFG [2022-03-18 16:06:42,330 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-18 16:06:42,487 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-18 16:06:42,565 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume !false; [2022-03-18 16:06:42,565 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##14: assume false; [2022-03-18 16:06:42,570 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-18 16:06:42,595 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##18: assume !false; [2022-03-18 16:06:42,596 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##17: assume false; [2022-03-18 16:06:42,613 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-18 16:06:42,624 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##16: assume !false; [2022-03-18 16:06:42,624 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume false; [2022-03-18 16:06:42,666 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-18 16:06:42,694 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##6: assume !false; [2022-03-18 16:06:42,694 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L305: #res := 0; [2022-03-18 16:06:42,694 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##5: assume false; [2022-03-18 16:06:42,698 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-18 16:06:42,800 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##21: assume false; [2022-03-18 16:06:42,800 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##22: assume !false; [2022-03-18 16:06:42,801 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-18 16:06:42,821 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##21: assume !false; [2022-03-18 16:06:42,821 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##20: assume false; [2022-03-18 16:06:42,843 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-18 16:06:42,855 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##10: assume !false; [2022-03-18 16:06:42,855 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##9: assume false; [2022-03-18 16:06:42,858 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-18 16:06:42,977 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##26: assume !false; [2022-03-18 16:06:42,977 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##25: assume false; [2022-03-18 16:06:42,987 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-18 16:06:42,990 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-18 16:06:42,991 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-18 16:06:43,009 INFO L275 CfgBuilder]: Performing block encoding [2022-03-18 16:06:43,025 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-18 16:06:43,025 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-03-18 16:06:43,029 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.03 04:06:43 BoogieIcfgContainer [2022-03-18 16:06:43,029 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-18 16:06:43,032 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-18 16:06:43,032 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-18 16:06:43,034 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-18 16:06:43,035 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.03 04:06:41" (1/3) ... [2022-03-18 16:06:43,035 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@480fbcb1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.03 04:06:43, skipping insertion in model container [2022-03-18 16:06:43,035 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 04:06:41" (2/3) ... [2022-03-18 16:06:43,036 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@480fbcb1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.03 04:06:43, skipping insertion in model container [2022-03-18 16:06:43,036 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.03 04:06:43" (3/3) ... [2022-03-18 16:06:43,038 INFO L111 eAbstractionObserver]: Analyzing ICFG cdaudio_simpl1.cil-1.c [2022-03-18 16:06:43,043 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-03-18 16:06:43,043 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-18 16:06:43,101 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-18 16:06:43,106 INFO L340 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP [2022-03-18 16:06:43,106 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-03-18 16:06:43,140 INFO L276 IsEmpty]: Start isEmpty. Operand has 517 states, 383 states have (on average 1.4882506527415145) internal successors, (570), 404 states have internal predecessors, (570), 103 states have call successors, (103), 29 states have call predecessors, (103), 29 states have return successors, (103), 98 states have call predecessors, (103), 103 states have call successors, (103) [2022-03-18 16:06:43,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-18 16:06:43,145 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 16:06:43,146 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 16:06:43,146 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 16:06:43,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 16:06:43,151 INFO L85 PathProgramCache]: Analyzing trace with hash 1971492104, now seen corresponding path program 1 times [2022-03-18 16:06:43,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 16:06:43,161 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494315757] [2022-03-18 16:06:43,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 16:06:43,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 16:06:43,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:06:43,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 16:06:43,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:06:43,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 16:06:43,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:06:43,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 16:06:43,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 16:06:43,597 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494315757] [2022-03-18 16:06:43,597 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1494315757] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 16:06:43,597 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 16:06:43,598 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-18 16:06:43,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162362508] [2022-03-18 16:06:43,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 16:06:43,603 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-18 16:06:43,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 16:06:43,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-18 16:06:43,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-03-18 16:06:43,636 INFO L87 Difference]: Start difference. First operand has 517 states, 383 states have (on average 1.4882506527415145) internal successors, (570), 404 states have internal predecessors, (570), 103 states have call successors, (103), 29 states have call predecessors, (103), 29 states have return successors, (103), 98 states have call predecessors, (103), 103 states have call successors, (103) Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 3 states have internal predecessors, (14), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-03-18 16:06:45,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 16:06:45,881 INFO L93 Difference]: Finished difference Result 1047 states and 1683 transitions. [2022-03-18 16:06:45,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-18 16:06:45,883 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 3 states have internal predecessors, (14), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 20 [2022-03-18 16:06:45,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 16:06:45,897 INFO L225 Difference]: With dead ends: 1047 [2022-03-18 16:06:45,897 INFO L226 Difference]: Without dead ends: 665 [2022-03-18 16:06:45,904 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-03-18 16:06:45,906 INFO L912 BasicCegarLoop]: 741 mSDtfsCounter, 399 mSDsluCounter, 272 mSDsCounter, 0 mSdLazyCounter, 1595 mSolverCounterSat, 158 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 400 SdHoareTripleChecker+Valid, 1013 SdHoareTripleChecker+Invalid, 1753 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 158 IncrementalHoareTripleChecker+Valid, 1595 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-03-18 16:06:45,907 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [400 Valid, 1013 Invalid, 1753 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [158 Valid, 1595 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-03-18 16:06:45,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 665 states. [2022-03-18 16:06:45,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 665 to 509. [2022-03-18 16:06:45,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 509 states, 378 states have (on average 1.4576719576719577) internal successors, (551), 397 states have internal predecessors, (551), 103 states have call successors, (103), 29 states have call predecessors, (103), 27 states have return successors, (86), 86 states have call predecessors, (86), 86 states have call successors, (86) [2022-03-18 16:06:45,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 509 states to 509 states and 740 transitions. [2022-03-18 16:06:45,991 INFO L78 Accepts]: Start accepts. Automaton has 509 states and 740 transitions. Word has length 20 [2022-03-18 16:06:45,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 16:06:45,992 INFO L478 AbstractCegarLoop]: Abstraction has 509 states and 740 transitions. [2022-03-18 16:06:45,992 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 3 states have internal predecessors, (14), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-03-18 16:06:45,992 INFO L276 IsEmpty]: Start isEmpty. Operand 509 states and 740 transitions. [2022-03-18 16:06:45,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-03-18 16:06:45,993 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 16:06:45,993 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 16:06:45,994 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-18 16:06:45,994 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 16:06:45,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 16:06:45,994 INFO L85 PathProgramCache]: Analyzing trace with hash -1335659000, now seen corresponding path program 1 times [2022-03-18 16:06:45,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 16:06:45,995 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899134722] [2022-03-18 16:06:45,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 16:06:45,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 16:06:46,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:06:46,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 16:06:46,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:06:46,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 16:06:46,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:06:46,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 16:06:46,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:06:46,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 16:06:46,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 16:06:46,149 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899134722] [2022-03-18 16:06:46,149 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1899134722] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 16:06:46,150 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 16:06:46,150 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-18 16:06:46,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739039062] [2022-03-18 16:06:46,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 16:06:46,151 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-18 16:06:46,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 16:06:46,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-18 16:06:46,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-03-18 16:06:46,152 INFO L87 Difference]: Start difference. First operand 509 states and 740 transitions. Second operand has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 3 states have internal predecessors, (16), 3 states have call successors, (6), 6 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-03-18 16:06:47,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 16:06:47,801 INFO L93 Difference]: Finished difference Result 967 states and 1429 transitions. [2022-03-18 16:06:47,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-18 16:06:47,802 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 3 states have internal predecessors, (16), 3 states have call successors, (6), 6 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 25 [2022-03-18 16:06:47,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 16:06:47,809 INFO L225 Difference]: With dead ends: 967 [2022-03-18 16:06:47,809 INFO L226 Difference]: Without dead ends: 846 [2022-03-18 16:06:47,810 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-03-18 16:06:47,811 INFO L912 BasicCegarLoop]: 841 mSDtfsCounter, 1891 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 917 mSolverCounterSat, 586 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1895 SdHoareTripleChecker+Valid, 1013 SdHoareTripleChecker+Invalid, 1503 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 586 IncrementalHoareTripleChecker+Valid, 917 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-03-18 16:06:47,811 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [1895 Valid, 1013 Invalid, 1503 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [586 Valid, 917 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-03-18 16:06:47,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 846 states. [2022-03-18 16:06:47,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 846 to 664. [2022-03-18 16:06:47,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 664 states, 502 states have (on average 1.408366533864542) internal successors, (707), 510 states have internal predecessors, (707), 112 states have call successors, (112), 40 states have call predecessors, (112), 49 states have return successors, (145), 119 states have call predecessors, (145), 99 states have call successors, (145) [2022-03-18 16:06:47,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 664 states to 664 states and 964 transitions. [2022-03-18 16:06:47,869 INFO L78 Accepts]: Start accepts. Automaton has 664 states and 964 transitions. Word has length 25 [2022-03-18 16:06:47,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 16:06:47,870 INFO L478 AbstractCegarLoop]: Abstraction has 664 states and 964 transitions. [2022-03-18 16:06:47,870 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 3 states have internal predecessors, (16), 3 states have call successors, (6), 6 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-03-18 16:06:47,870 INFO L276 IsEmpty]: Start isEmpty. Operand 664 states and 964 transitions. [2022-03-18 16:06:47,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-03-18 16:06:47,872 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 16:06:47,872 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 16:06:47,872 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-03-18 16:06:47,872 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 16:06:47,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 16:06:47,873 INFO L85 PathProgramCache]: Analyzing trace with hash 2015725837, now seen corresponding path program 1 times [2022-03-18 16:06:47,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 16:06:47,873 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777796928] [2022-03-18 16:06:47,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 16:06:47,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 16:06:47,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:06:47,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 16:06:47,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:06:47,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 16:06:47,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:06:48,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 16:06:48,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:06:48,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 16:06:48,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 16:06:48,027 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777796928] [2022-03-18 16:06:48,027 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1777796928] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 16:06:48,027 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 16:06:48,027 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-18 16:06:48,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318880442] [2022-03-18 16:06:48,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 16:06:48,028 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-18 16:06:48,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 16:06:48,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-18 16:06:48,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-03-18 16:06:48,029 INFO L87 Difference]: Start difference. First operand 664 states and 964 transitions. Second operand has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 3 states have internal predecessors, (19), 3 states have call successors, (8), 6 states have call predecessors, (8), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-03-18 16:06:50,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 16:06:50,039 INFO L93 Difference]: Finished difference Result 1148 states and 1650 transitions. [2022-03-18 16:06:50,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-18 16:06:50,039 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 3 states have internal predecessors, (19), 3 states have call successors, (8), 6 states have call predecessors, (8), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 30 [2022-03-18 16:06:50,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 16:06:50,045 INFO L225 Difference]: With dead ends: 1148 [2022-03-18 16:06:50,045 INFO L226 Difference]: Without dead ends: 970 [2022-03-18 16:06:50,046 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-03-18 16:06:50,047 INFO L912 BasicCegarLoop]: 725 mSDtfsCounter, 1121 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 1647 mSolverCounterSat, 250 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1131 SdHoareTripleChecker+Valid, 886 SdHoareTripleChecker+Invalid, 1897 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 250 IncrementalHoareTripleChecker+Valid, 1647 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-03-18 16:06:50,047 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [1131 Valid, 886 Invalid, 1897 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [250 Valid, 1647 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-03-18 16:06:50,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 970 states. [2022-03-18 16:06:50,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 970 to 789. [2022-03-18 16:06:50,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 789 states, 611 states have (on average 1.4042553191489362) internal successors, (858), 615 states have internal predecessors, (858), 114 states have call successors, (114), 46 states have call predecessors, (114), 63 states have return successors, (163), 130 states have call predecessors, (163), 104 states have call successors, (163) [2022-03-18 16:06:50,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 789 states to 789 states and 1135 transitions. [2022-03-18 16:06:50,100 INFO L78 Accepts]: Start accepts. Automaton has 789 states and 1135 transitions. Word has length 30 [2022-03-18 16:06:50,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 16:06:50,101 INFO L478 AbstractCegarLoop]: Abstraction has 789 states and 1135 transitions. [2022-03-18 16:06:50,101 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 3 states have internal predecessors, (19), 3 states have call successors, (8), 6 states have call predecessors, (8), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-03-18 16:06:50,101 INFO L276 IsEmpty]: Start isEmpty. Operand 789 states and 1135 transitions. [2022-03-18 16:06:50,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-03-18 16:06:50,103 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 16:06:50,103 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 16:06:50,103 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-03-18 16:06:50,103 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 16:06:50,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 16:06:50,104 INFO L85 PathProgramCache]: Analyzing trace with hash -994008456, now seen corresponding path program 1 times [2022-03-18 16:06:50,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 16:06:50,104 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287765407] [2022-03-18 16:06:50,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 16:06:50,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 16:06:50,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:06:50,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 16:06:50,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:06:50,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 16:06:50,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:06:50,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 16:06:50,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:06:50,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 16:06:50,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 16:06:50,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287765407] [2022-03-18 16:06:50,244 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [287765407] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 16:06:50,244 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 16:06:50,244 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-18 16:06:50,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187141801] [2022-03-18 16:06:50,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 16:06:50,245 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-18 16:06:50,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 16:06:50,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-18 16:06:50,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-03-18 16:06:50,246 INFO L87 Difference]: Start difference. First operand 789 states and 1135 transitions. Second operand has 6 states, 6 states have (on average 3.5) internal successors, (21), 3 states have internal predecessors, (21), 2 states have call successors, (7), 5 states have call predecessors, (7), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-03-18 16:06:52,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 16:06:52,235 INFO L93 Difference]: Finished difference Result 1630 states and 2449 transitions. [2022-03-18 16:06:52,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-18 16:06:52,236 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 3 states have internal predecessors, (21), 2 states have call successors, (7), 5 states have call predecessors, (7), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 31 [2022-03-18 16:06:52,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 16:06:52,243 INFO L225 Difference]: With dead ends: 1630 [2022-03-18 16:06:52,243 INFO L226 Difference]: Without dead ends: 1344 [2022-03-18 16:06:52,244 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-03-18 16:06:52,245 INFO L912 BasicCegarLoop]: 1009 mSDtfsCounter, 1473 mSDsluCounter, 256 mSDsCounter, 0 mSdLazyCounter, 1325 mSolverCounterSat, 526 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1476 SdHoareTripleChecker+Valid, 1265 SdHoareTripleChecker+Invalid, 1851 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 526 IncrementalHoareTripleChecker+Valid, 1325 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-03-18 16:06:52,245 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [1476 Valid, 1265 Invalid, 1851 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [526 Valid, 1325 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-03-18 16:06:52,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1344 states. [2022-03-18 16:06:52,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1344 to 907. [2022-03-18 16:06:52,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 907 states, 708 states have (on average 1.4138418079096045) internal successors, (1001), 711 states have internal predecessors, (1001), 127 states have call successors, (127), 54 states have call predecessors, (127), 71 states have return successors, (220), 144 states have call predecessors, (220), 117 states have call successors, (220) [2022-03-18 16:06:52,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 907 states to 907 states and 1348 transitions. [2022-03-18 16:06:52,305 INFO L78 Accepts]: Start accepts. Automaton has 907 states and 1348 transitions. Word has length 31 [2022-03-18 16:06:52,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 16:06:52,305 INFO L478 AbstractCegarLoop]: Abstraction has 907 states and 1348 transitions. [2022-03-18 16:06:52,305 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 3 states have internal predecessors, (21), 2 states have call successors, (7), 5 states have call predecessors, (7), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-03-18 16:06:52,306 INFO L276 IsEmpty]: Start isEmpty. Operand 907 states and 1348 transitions. [2022-03-18 16:06:52,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-03-18 16:06:52,307 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 16:06:52,307 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 16:06:52,307 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-03-18 16:06:52,307 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 16:06:52,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 16:06:52,308 INFO L85 PathProgramCache]: Analyzing trace with hash -987884657, now seen corresponding path program 1 times [2022-03-18 16:06:52,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 16:06:52,308 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841808484] [2022-03-18 16:06:52,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 16:06:52,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 16:06:52,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:06:52,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 16:06:52,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:06:52,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 16:06:52,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:06:52,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 16:06:52,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:06:52,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 16:06:52,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 16:06:52,491 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841808484] [2022-03-18 16:06:52,491 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [841808484] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 16:06:52,491 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 16:06:52,491 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-03-18 16:06:52,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510896762] [2022-03-18 16:06:52,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 16:06:52,492 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-18 16:06:52,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 16:06:52,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-18 16:06:52,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-03-18 16:06:52,493 INFO L87 Difference]: Start difference. First operand 907 states and 1348 transitions. Second operand has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 6 states have internal predecessors, (22), 4 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-03-18 16:06:54,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 16:06:54,741 INFO L93 Difference]: Finished difference Result 1632 states and 2483 transitions. [2022-03-18 16:06:54,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-18 16:06:54,742 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 6 states have internal predecessors, (22), 4 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 32 [2022-03-18 16:06:54,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 16:06:54,747 INFO L225 Difference]: With dead ends: 1632 [2022-03-18 16:06:54,747 INFO L226 Difference]: Without dead ends: 1046 [2022-03-18 16:06:54,750 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2022-03-18 16:06:54,760 INFO L912 BasicCegarLoop]: 742 mSDtfsCounter, 2774 mSDsluCounter, 289 mSDsCounter, 0 mSdLazyCounter, 1630 mSolverCounterSat, 976 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2780 SdHoareTripleChecker+Valid, 1031 SdHoareTripleChecker+Invalid, 2606 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 976 IncrementalHoareTripleChecker+Valid, 1630 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-03-18 16:06:54,760 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [2780 Valid, 1031 Invalid, 2606 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [976 Valid, 1630 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-03-18 16:06:54,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1046 states. [2022-03-18 16:06:54,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1046 to 835. [2022-03-18 16:06:54,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 835 states, 649 states have (on average 1.399075500770416) internal successors, (908), 653 states have internal predecessors, (908), 118 states have call successors, (118), 50 states have call predecessors, (118), 67 states have return successors, (177), 134 states have call predecessors, (177), 108 states have call successors, (177) [2022-03-18 16:06:54,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 835 states to 835 states and 1203 transitions. [2022-03-18 16:06:54,834 INFO L78 Accepts]: Start accepts. Automaton has 835 states and 1203 transitions. Word has length 32 [2022-03-18 16:06:54,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 16:06:54,836 INFO L478 AbstractCegarLoop]: Abstraction has 835 states and 1203 transitions. [2022-03-18 16:06:54,836 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 6 states have internal predecessors, (22), 4 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-03-18 16:06:54,836 INFO L276 IsEmpty]: Start isEmpty. Operand 835 states and 1203 transitions. [2022-03-18 16:06:54,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-03-18 16:06:54,839 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 16:06:54,839 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 16:06:54,839 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-03-18 16:06:54,839 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 16:06:54,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 16:06:54,840 INFO L85 PathProgramCache]: Analyzing trace with hash 450252455, now seen corresponding path program 1 times [2022-03-18 16:06:54,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 16:06:54,840 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215678683] [2022-03-18 16:06:54,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 16:06:54,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 16:06:54,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:06:54,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 16:06:54,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:06:54,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 16:06:54,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:06:54,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 16:06:54,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:06:54,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 16:06:54,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 16:06:54,972 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215678683] [2022-03-18 16:06:54,973 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1215678683] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 16:06:54,973 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 16:06:54,973 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-18 16:06:54,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482092721] [2022-03-18 16:06:54,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 16:06:54,973 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-18 16:06:54,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 16:06:54,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-18 16:06:54,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-03-18 16:06:54,974 INFO L87 Difference]: Start difference. First operand 835 states and 1203 transitions. Second operand has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 3 states have internal predecessors, (25), 3 states have call successors, (8), 6 states have call predecessors, (8), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-03-18 16:06:56,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 16:06:56,739 INFO L93 Difference]: Finished difference Result 965 states and 1425 transitions. [2022-03-18 16:06:56,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-18 16:06:56,739 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 3 states have internal predecessors, (25), 3 states have call successors, (8), 6 states have call predecessors, (8), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 36 [2022-03-18 16:06:56,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 16:06:56,744 INFO L225 Difference]: With dead ends: 965 [2022-03-18 16:06:56,744 INFO L226 Difference]: Without dead ends: 961 [2022-03-18 16:06:56,745 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-03-18 16:06:56,745 INFO L912 BasicCegarLoop]: 713 mSDtfsCounter, 407 mSDsluCounter, 270 mSDsCounter, 0 mSdLazyCounter, 1880 mSolverCounterSat, 142 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 408 SdHoareTripleChecker+Valid, 983 SdHoareTripleChecker+Invalid, 2022 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 142 IncrementalHoareTripleChecker+Valid, 1880 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-03-18 16:06:56,746 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [408 Valid, 983 Invalid, 2022 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [142 Valid, 1880 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-03-18 16:06:56,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 961 states. [2022-03-18 16:06:56,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 961 to 834. [2022-03-18 16:06:56,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 834 states, 649 states have (on average 1.3959938366718028) internal successors, (906), 652 states have internal predecessors, (906), 117 states have call successors, (117), 50 states have call predecessors, (117), 67 states have return successors, (177), 134 states have call predecessors, (177), 108 states have call successors, (177) [2022-03-18 16:06:56,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 834 states to 834 states and 1200 transitions. [2022-03-18 16:06:56,819 INFO L78 Accepts]: Start accepts. Automaton has 834 states and 1200 transitions. Word has length 36 [2022-03-18 16:06:56,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 16:06:56,820 INFO L478 AbstractCegarLoop]: Abstraction has 834 states and 1200 transitions. [2022-03-18 16:06:56,820 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 3 states have internal predecessors, (25), 3 states have call successors, (8), 6 states have call predecessors, (8), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-03-18 16:06:56,820 INFO L276 IsEmpty]: Start isEmpty. Operand 834 states and 1200 transitions. [2022-03-18 16:06:56,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-03-18 16:06:56,823 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 16:06:56,824 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 16:06:56,824 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-03-18 16:06:56,824 INFO L403 AbstractCegarLoop]: === Iteration 7 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 16:06:56,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 16:06:56,825 INFO L85 PathProgramCache]: Analyzing trace with hash -783054808, now seen corresponding path program 1 times [2022-03-18 16:06:56,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 16:06:56,825 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192554321] [2022-03-18 16:06:56,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 16:06:56,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 16:06:56,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:06:56,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 16:06:56,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:06:56,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 16:06:56,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:06:56,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 16:06:56,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:06:56,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 16:06:56,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 16:06:56,980 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192554321] [2022-03-18 16:06:56,980 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [192554321] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 16:06:56,980 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 16:06:56,980 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-03-18 16:06:56,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330953994] [2022-03-18 16:06:56,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 16:06:56,981 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-18 16:06:56,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 16:06:56,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-18 16:06:56,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-03-18 16:06:56,982 INFO L87 Difference]: Start difference. First operand 834 states and 1200 transitions. Second operand has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 4 states have internal predecessors, (26), 3 states have call successors, (10), 6 states have call predecessors, (10), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-03-18 16:06:58,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 16:06:58,944 INFO L93 Difference]: Finished difference Result 1417 states and 2024 transitions. [2022-03-18 16:06:58,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-18 16:06:58,944 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 4 states have internal predecessors, (26), 3 states have call successors, (10), 6 states have call predecessors, (10), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 39 [2022-03-18 16:06:58,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 16:06:58,949 INFO L225 Difference]: With dead ends: 1417 [2022-03-18 16:06:58,949 INFO L226 Difference]: Without dead ends: 999 [2022-03-18 16:06:58,952 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-03-18 16:06:58,953 INFO L912 BasicCegarLoop]: 821 mSDtfsCounter, 764 mSDsluCounter, 432 mSDsCounter, 0 mSdLazyCounter, 2153 mSolverCounterSat, 238 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 766 SdHoareTripleChecker+Valid, 1253 SdHoareTripleChecker+Invalid, 2391 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 238 IncrementalHoareTripleChecker+Valid, 2153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-03-18 16:06:58,953 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [766 Valid, 1253 Invalid, 2391 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [238 Valid, 2153 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-03-18 16:06:58,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 999 states. [2022-03-18 16:06:59,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 999 to 736. [2022-03-18 16:06:59,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 736 states, 571 states have (on average 1.3870402802101576) internal successors, (792), 575 states have internal predecessors, (792), 106 states have call successors, (106), 45 states have call predecessors, (106), 58 states have return successors, (131), 118 states have call predecessors, (131), 97 states have call successors, (131) [2022-03-18 16:06:59,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 736 states to 736 states and 1029 transitions. [2022-03-18 16:06:59,007 INFO L78 Accepts]: Start accepts. Automaton has 736 states and 1029 transitions. Word has length 39 [2022-03-18 16:06:59,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 16:06:59,007 INFO L478 AbstractCegarLoop]: Abstraction has 736 states and 1029 transitions. [2022-03-18 16:06:59,008 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 4 states have internal predecessors, (26), 3 states have call successors, (10), 6 states have call predecessors, (10), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-03-18 16:06:59,008 INFO L276 IsEmpty]: Start isEmpty. Operand 736 states and 1029 transitions. [2022-03-18 16:06:59,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-03-18 16:06:59,009 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 16:06:59,010 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 16:06:59,010 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-03-18 16:06:59,010 INFO L403 AbstractCegarLoop]: === Iteration 8 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 16:06:59,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 16:06:59,010 INFO L85 PathProgramCache]: Analyzing trace with hash 1815790808, now seen corresponding path program 1 times [2022-03-18 16:06:59,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 16:06:59,011 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478023765] [2022-03-18 16:06:59,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 16:06:59,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 16:06:59,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:06:59,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 16:06:59,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:06:59,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 16:06:59,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:06:59,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 16:06:59,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:06:59,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 16:06:59,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 16:06:59,171 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478023765] [2022-03-18 16:06:59,171 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [478023765] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 16:06:59,171 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 16:06:59,171 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-18 16:06:59,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500019872] [2022-03-18 16:06:59,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 16:06:59,172 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-18 16:06:59,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 16:06:59,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-18 16:06:59,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-03-18 16:06:59,173 INFO L87 Difference]: Start difference. First operand 736 states and 1029 transitions. Second operand has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 3 states have internal predecessors, (28), 3 states have call successors, (9), 6 states have call predecessors, (9), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-03-18 16:07:00,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 16:07:00,371 INFO L93 Difference]: Finished difference Result 979 states and 1409 transitions. [2022-03-18 16:07:00,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-18 16:07:00,372 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 3 states have internal predecessors, (28), 3 states have call successors, (9), 6 states have call predecessors, (9), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 40 [2022-03-18 16:07:00,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 16:07:00,375 INFO L225 Difference]: With dead ends: 979 [2022-03-18 16:07:00,375 INFO L226 Difference]: Without dead ends: 959 [2022-03-18 16:07:00,376 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-03-18 16:07:00,377 INFO L912 BasicCegarLoop]: 672 mSDtfsCounter, 1483 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 994 mSolverCounterSat, 390 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1491 SdHoareTripleChecker+Valid, 772 SdHoareTripleChecker+Invalid, 1384 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 390 IncrementalHoareTripleChecker+Valid, 994 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-03-18 16:07:00,377 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [1491 Valid, 772 Invalid, 1384 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [390 Valid, 994 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-03-18 16:07:00,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 959 states. [2022-03-18 16:07:00,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 959 to 762. [2022-03-18 16:07:00,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 762 states, 595 states have (on average 1.3983193277310924) internal successors, (832), 608 states have internal predecessors, (832), 108 states have call successors, (108), 48 states have call predecessors, (108), 58 states have return successors, (124), 110 states have call predecessors, (124), 100 states have call successors, (124) [2022-03-18 16:07:00,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 762 states to 762 states and 1064 transitions. [2022-03-18 16:07:00,435 INFO L78 Accepts]: Start accepts. Automaton has 762 states and 1064 transitions. Word has length 40 [2022-03-18 16:07:00,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 16:07:00,436 INFO L478 AbstractCegarLoop]: Abstraction has 762 states and 1064 transitions. [2022-03-18 16:07:00,436 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 3 states have internal predecessors, (28), 3 states have call successors, (9), 6 states have call predecessors, (9), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-03-18 16:07:00,436 INFO L276 IsEmpty]: Start isEmpty. Operand 762 states and 1064 transitions. [2022-03-18 16:07:00,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-03-18 16:07:00,438 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 16:07:00,438 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 16:07:00,438 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-03-18 16:07:00,439 INFO L403 AbstractCegarLoop]: === Iteration 9 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 16:07:00,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 16:07:00,439 INFO L85 PathProgramCache]: Analyzing trace with hash 737122156, now seen corresponding path program 1 times [2022-03-18 16:07:00,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 16:07:00,439 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747217558] [2022-03-18 16:07:00,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 16:07:00,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 16:07:00,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:07:00,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 16:07:00,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:07:00,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 16:07:00,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:07:00,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 16:07:00,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:07:00,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-03-18 16:07:00,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:07:00,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 16:07:00,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 16:07:00,551 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747217558] [2022-03-18 16:07:00,551 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [747217558] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 16:07:00,551 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 16:07:00,551 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-03-18 16:07:00,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121143489] [2022-03-18 16:07:00,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 16:07:00,552 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-18 16:07:00,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 16:07:00,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-18 16:07:00,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-03-18 16:07:00,553 INFO L87 Difference]: Start difference. First operand 762 states and 1064 transitions. Second operand has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 3 states have internal predecessors, (32), 3 states have call successors, (10), 7 states have call predecessors, (10), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-03-18 16:07:02,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 16:07:02,221 INFO L93 Difference]: Finished difference Result 1167 states and 1671 transitions. [2022-03-18 16:07:02,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-18 16:07:02,222 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 3 states have internal predecessors, (32), 3 states have call successors, (10), 7 states have call predecessors, (10), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 46 [2022-03-18 16:07:02,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 16:07:02,226 INFO L225 Difference]: With dead ends: 1167 [2022-03-18 16:07:02,226 INFO L226 Difference]: Without dead ends: 942 [2022-03-18 16:07:02,227 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2022-03-18 16:07:02,227 INFO L912 BasicCegarLoop]: 791 mSDtfsCounter, 921 mSDsluCounter, 592 mSDsCounter, 0 mSdLazyCounter, 1706 mSolverCounterSat, 295 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 927 SdHoareTripleChecker+Valid, 1383 SdHoareTripleChecker+Invalid, 2001 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 295 IncrementalHoareTripleChecker+Valid, 1706 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-03-18 16:07:02,228 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [927 Valid, 1383 Invalid, 2001 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [295 Valid, 1706 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-03-18 16:07:02,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 942 states. [2022-03-18 16:07:02,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 942 to 762. [2022-03-18 16:07:02,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 762 states, 595 states have (on average 1.3966386554621848) internal successors, (831), 608 states have internal predecessors, (831), 108 states have call successors, (108), 48 states have call predecessors, (108), 58 states have return successors, (124), 110 states have call predecessors, (124), 100 states have call successors, (124) [2022-03-18 16:07:02,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 762 states to 762 states and 1063 transitions. [2022-03-18 16:07:02,298 INFO L78 Accepts]: Start accepts. Automaton has 762 states and 1063 transitions. Word has length 46 [2022-03-18 16:07:02,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 16:07:02,298 INFO L478 AbstractCegarLoop]: Abstraction has 762 states and 1063 transitions. [2022-03-18 16:07:02,299 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 3 states have internal predecessors, (32), 3 states have call successors, (10), 7 states have call predecessors, (10), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-03-18 16:07:02,299 INFO L276 IsEmpty]: Start isEmpty. Operand 762 states and 1063 transitions. [2022-03-18 16:07:02,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-03-18 16:07:02,301 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 16:07:02,301 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 16:07:02,301 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-03-18 16:07:02,301 INFO L403 AbstractCegarLoop]: === Iteration 10 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 16:07:02,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 16:07:02,302 INFO L85 PathProgramCache]: Analyzing trace with hash 8107196, now seen corresponding path program 1 times [2022-03-18 16:07:02,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 16:07:02,302 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291491336] [2022-03-18 16:07:02,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 16:07:02,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 16:07:02,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:07:02,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 16:07:02,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:07:02,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 16:07:02,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:07:02,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 16:07:02,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:07:02,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-03-18 16:07:02,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:07:02,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 16:07:02,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 16:07:02,439 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291491336] [2022-03-18 16:07:02,439 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1291491336] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 16:07:02,440 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 16:07:02,440 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-03-18 16:07:02,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079660055] [2022-03-18 16:07:02,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 16:07:02,440 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-18 16:07:02,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 16:07:02,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-18 16:07:02,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-03-18 16:07:02,441 INFO L87 Difference]: Start difference. First operand 762 states and 1063 transitions. Second operand has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 3 states have internal predecessors, (34), 3 states have call successors, (9), 7 states have call predecessors, (9), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-03-18 16:07:03,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 16:07:03,736 INFO L93 Difference]: Finished difference Result 964 states and 1383 transitions. [2022-03-18 16:07:03,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-18 16:07:03,737 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 3 states have internal predecessors, (34), 3 states have call successors, (9), 7 states have call predecessors, (9), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 47 [2022-03-18 16:07:03,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 16:07:03,739 INFO L225 Difference]: With dead ends: 964 [2022-03-18 16:07:03,740 INFO L226 Difference]: Without dead ends: 897 [2022-03-18 16:07:03,740 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=53, Unknown=0, NotChecked=0, Total=90 [2022-03-18 16:07:03,741 INFO L912 BasicCegarLoop]: 667 mSDtfsCounter, 1147 mSDsluCounter, 450 mSDsCounter, 0 mSdLazyCounter, 1167 mSolverCounterSat, 258 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1153 SdHoareTripleChecker+Valid, 1117 SdHoareTripleChecker+Invalid, 1425 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 258 IncrementalHoareTripleChecker+Valid, 1167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-03-18 16:07:03,741 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [1153 Valid, 1117 Invalid, 1425 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [258 Valid, 1167 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-03-18 16:07:03,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 897 states. [2022-03-18 16:07:03,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 897 to 751. [2022-03-18 16:07:03,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 751 states, 588 states have (on average 1.3979591836734695) internal successors, (822), 601 states have internal predecessors, (822), 106 states have call successors, (106), 46 states have call predecessors, (106), 56 states have return successors, (122), 108 states have call predecessors, (122), 98 states have call successors, (122) [2022-03-18 16:07:03,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 751 states to 751 states and 1050 transitions. [2022-03-18 16:07:03,803 INFO L78 Accepts]: Start accepts. Automaton has 751 states and 1050 transitions. Word has length 47 [2022-03-18 16:07:03,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 16:07:03,803 INFO L478 AbstractCegarLoop]: Abstraction has 751 states and 1050 transitions. [2022-03-18 16:07:03,803 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 3 states have internal predecessors, (34), 3 states have call successors, (9), 7 states have call predecessors, (9), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-03-18 16:07:03,803 INFO L276 IsEmpty]: Start isEmpty. Operand 751 states and 1050 transitions. [2022-03-18 16:07:03,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-03-18 16:07:03,805 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 16:07:03,806 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 16:07:03,806 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-03-18 16:07:03,806 INFO L403 AbstractCegarLoop]: === Iteration 11 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 16:07:03,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 16:07:03,806 INFO L85 PathProgramCache]: Analyzing trace with hash -776493065, now seen corresponding path program 1 times [2022-03-18 16:07:03,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 16:07:03,807 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346068543] [2022-03-18 16:07:03,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 16:07:03,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 16:07:03,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:07:03,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 16:07:03,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:07:03,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 16:07:03,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:07:03,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 16:07:03,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:07:03,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-03-18 16:07:03,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:07:03,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 16:07:03,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:07:03,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 16:07:03,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 16:07:03,960 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1346068543] [2022-03-18 16:07:03,960 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1346068543] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 16:07:03,960 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 16:07:03,960 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-03-18 16:07:03,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622057956] [2022-03-18 16:07:03,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 16:07:03,961 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-18 16:07:03,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 16:07:03,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-18 16:07:03,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2022-03-18 16:07:03,961 INFO L87 Difference]: Start difference. First operand 751 states and 1050 transitions. Second operand has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 7 states have internal predecessors, (36), 4 states have call successors, (7), 6 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2022-03-18 16:07:06,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 16:07:06,509 INFO L93 Difference]: Finished difference Result 1067 states and 1515 transitions. [2022-03-18 16:07:06,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-03-18 16:07:06,510 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 7 states have internal predecessors, (36), 4 states have call successors, (7), 6 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) Word has length 48 [2022-03-18 16:07:06,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 16:07:06,514 INFO L225 Difference]: With dead ends: 1067 [2022-03-18 16:07:06,514 INFO L226 Difference]: Without dead ends: 1006 [2022-03-18 16:07:06,515 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=119, Invalid=343, Unknown=0, NotChecked=0, Total=462 [2022-03-18 16:07:06,515 INFO L912 BasicCegarLoop]: 755 mSDtfsCounter, 1815 mSDsluCounter, 1003 mSDsCounter, 0 mSdLazyCounter, 3149 mSolverCounterSat, 586 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1844 SdHoareTripleChecker+Valid, 1758 SdHoareTripleChecker+Invalid, 3735 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 586 IncrementalHoareTripleChecker+Valid, 3149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-03-18 16:07:06,516 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [1844 Valid, 1758 Invalid, 3735 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [586 Valid, 3149 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-03-18 16:07:06,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1006 states. [2022-03-18 16:07:06,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1006 to 794. [2022-03-18 16:07:06,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 794 states, 623 states have (on average 1.3964686998394864) internal successors, (870), 635 states have internal predecessors, (870), 110 states have call successors, (110), 49 states have call predecessors, (110), 60 states have return successors, (131), 114 states have call predecessors, (131), 102 states have call successors, (131) [2022-03-18 16:07:06,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 794 states to 794 states and 1111 transitions. [2022-03-18 16:07:06,583 INFO L78 Accepts]: Start accepts. Automaton has 794 states and 1111 transitions. Word has length 48 [2022-03-18 16:07:06,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 16:07:06,583 INFO L478 AbstractCegarLoop]: Abstraction has 794 states and 1111 transitions. [2022-03-18 16:07:06,583 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 7 states have internal predecessors, (36), 4 states have call successors, (7), 6 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2022-03-18 16:07:06,583 INFO L276 IsEmpty]: Start isEmpty. Operand 794 states and 1111 transitions. [2022-03-18 16:07:06,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-03-18 16:07:06,585 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 16:07:06,586 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 16:07:06,586 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-03-18 16:07:06,586 INFO L403 AbstractCegarLoop]: === Iteration 12 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 16:07:06,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 16:07:06,586 INFO L85 PathProgramCache]: Analyzing trace with hash 1944299410, now seen corresponding path program 1 times [2022-03-18 16:07:06,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 16:07:06,586 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316129140] [2022-03-18 16:07:06,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 16:07:06,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 16:07:06,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:07:06,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 16:07:06,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:07:06,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 16:07:06,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:07:06,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 16:07:06,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:07:06,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-03-18 16:07:06,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:07:06,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 16:07:06,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:07:06,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 16:07:06,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 16:07:06,803 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316129140] [2022-03-18 16:07:06,803 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1316129140] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 16:07:06,803 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 16:07:06,804 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-03-18 16:07:06,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862914883] [2022-03-18 16:07:06,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 16:07:06,804 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-18 16:07:06,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 16:07:06,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-18 16:07:06,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-03-18 16:07:06,805 INFO L87 Difference]: Start difference. First operand 794 states and 1111 transitions. Second operand has 10 states, 10 states have (on average 3.8) internal successors, (38), 6 states have internal predecessors, (38), 3 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2022-03-18 16:07:08,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 16:07:08,527 INFO L93 Difference]: Finished difference Result 952 states and 1368 transitions. [2022-03-18 16:07:08,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-18 16:07:08,528 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.8) internal successors, (38), 6 states have internal predecessors, (38), 3 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) Word has length 50 [2022-03-18 16:07:08,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 16:07:08,531 INFO L225 Difference]: With dead ends: 952 [2022-03-18 16:07:08,531 INFO L226 Difference]: Without dead ends: 924 [2022-03-18 16:07:08,532 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2022-03-18 16:07:08,533 INFO L912 BasicCegarLoop]: 652 mSDtfsCounter, 2169 mSDsluCounter, 772 mSDsCounter, 0 mSdLazyCounter, 1377 mSolverCounterSat, 650 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2180 SdHoareTripleChecker+Valid, 1424 SdHoareTripleChecker+Invalid, 2027 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 650 IncrementalHoareTripleChecker+Valid, 1377 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-03-18 16:07:08,533 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [2180 Valid, 1424 Invalid, 2027 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [650 Valid, 1377 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-03-18 16:07:08,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 924 states. [2022-03-18 16:07:08,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 924 to 797. [2022-03-18 16:07:08,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 797 states, 626 states have (on average 1.3961661341853036) internal successors, (874), 638 states have internal predecessors, (874), 110 states have call successors, (110), 49 states have call predecessors, (110), 60 states have return successors, (131), 114 states have call predecessors, (131), 102 states have call successors, (131) [2022-03-18 16:07:08,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 797 states to 797 states and 1115 transitions. [2022-03-18 16:07:08,606 INFO L78 Accepts]: Start accepts. Automaton has 797 states and 1115 transitions. Word has length 50 [2022-03-18 16:07:08,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 16:07:08,606 INFO L478 AbstractCegarLoop]: Abstraction has 797 states and 1115 transitions. [2022-03-18 16:07:08,606 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.8) internal successors, (38), 6 states have internal predecessors, (38), 3 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2022-03-18 16:07:08,606 INFO L276 IsEmpty]: Start isEmpty. Operand 797 states and 1115 transitions. [2022-03-18 16:07:08,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-03-18 16:07:08,608 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 16:07:08,608 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 16:07:08,609 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-03-18 16:07:08,609 INFO L403 AbstractCegarLoop]: === Iteration 13 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 16:07:08,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 16:07:08,609 INFO L85 PathProgramCache]: Analyzing trace with hash -49845296, now seen corresponding path program 1 times [2022-03-18 16:07:08,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 16:07:08,609 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601910895] [2022-03-18 16:07:08,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 16:07:08,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 16:07:08,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:07:08,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 16:07:08,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:07:08,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 16:07:08,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:07:08,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 16:07:08,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:07:08,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-03-18 16:07:08,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:07:08,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 16:07:08,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:07:08,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 16:07:08,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 16:07:08,795 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601910895] [2022-03-18 16:07:08,795 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [601910895] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 16:07:08,795 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 16:07:08,795 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-18 16:07:08,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163618379] [2022-03-18 16:07:08,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 16:07:08,796 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-18 16:07:08,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 16:07:08,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-18 16:07:08,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2022-03-18 16:07:08,796 INFO L87 Difference]: Start difference. First operand 797 states and 1115 transitions. Second operand has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 8 states have internal predecessors, (38), 4 states have call successors, (7), 6 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2022-03-18 16:07:10,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 16:07:10,638 INFO L93 Difference]: Finished difference Result 978 states and 1402 transitions. [2022-03-18 16:07:10,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-18 16:07:10,638 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 8 states have internal predecessors, (38), 4 states have call successors, (7), 6 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) Word has length 50 [2022-03-18 16:07:10,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 16:07:10,641 INFO L225 Difference]: With dead ends: 978 [2022-03-18 16:07:10,641 INFO L226 Difference]: Without dead ends: 914 [2022-03-18 16:07:10,642 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2022-03-18 16:07:10,642 INFO L912 BasicCegarLoop]: 652 mSDtfsCounter, 2233 mSDsluCounter, 855 mSDsCounter, 0 mSdLazyCounter, 2119 mSolverCounterSat, 668 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2242 SdHoareTripleChecker+Valid, 1507 SdHoareTripleChecker+Invalid, 2787 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 668 IncrementalHoareTripleChecker+Valid, 2119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-03-18 16:07:10,642 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [2242 Valid, 1507 Invalid, 2787 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [668 Valid, 2119 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-03-18 16:07:10,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 914 states. [2022-03-18 16:07:10,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 914 to 792. [2022-03-18 16:07:10,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 792 states, 621 states have (on average 1.391304347826087) internal successors, (864), 633 states have internal predecessors, (864), 110 states have call successors, (110), 49 states have call predecessors, (110), 60 states have return successors, (131), 114 states have call predecessors, (131), 102 states have call successors, (131) [2022-03-18 16:07:10,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 792 states to 792 states and 1105 transitions. [2022-03-18 16:07:10,707 INFO L78 Accepts]: Start accepts. Automaton has 792 states and 1105 transitions. Word has length 50 [2022-03-18 16:07:10,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 16:07:10,707 INFO L478 AbstractCegarLoop]: Abstraction has 792 states and 1105 transitions. [2022-03-18 16:07:10,707 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 8 states have internal predecessors, (38), 4 states have call successors, (7), 6 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2022-03-18 16:07:10,708 INFO L276 IsEmpty]: Start isEmpty. Operand 792 states and 1105 transitions. [2022-03-18 16:07:10,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-03-18 16:07:10,710 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 16:07:10,710 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 16:07:10,710 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-03-18 16:07:10,710 INFO L403 AbstractCegarLoop]: === Iteration 14 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 16:07:10,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 16:07:10,710 INFO L85 PathProgramCache]: Analyzing trace with hash 96847506, now seen corresponding path program 1 times [2022-03-18 16:07:10,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 16:07:10,710 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809845421] [2022-03-18 16:07:10,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 16:07:10,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 16:07:10,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:07:10,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 16:07:10,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:07:10,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 16:07:10,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:07:10,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 16:07:10,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:07:10,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-03-18 16:07:10,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:07:10,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 16:07:10,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:07:10,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 16:07:10,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 16:07:10,838 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809845421] [2022-03-18 16:07:10,838 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [809845421] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 16:07:10,838 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 16:07:10,838 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-03-18 16:07:10,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482561972] [2022-03-18 16:07:10,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 16:07:10,839 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-18 16:07:10,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 16:07:10,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-18 16:07:10,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-03-18 16:07:10,840 INFO L87 Difference]: Start difference. First operand 792 states and 1105 transitions. Second operand has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (7), 6 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2022-03-18 16:07:12,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 16:07:12,430 INFO L93 Difference]: Finished difference Result 1090 states and 1555 transitions. [2022-03-18 16:07:12,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-18 16:07:12,430 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (7), 6 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) Word has length 50 [2022-03-18 16:07:12,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 16:07:12,434 INFO L225 Difference]: With dead ends: 1090 [2022-03-18 16:07:12,434 INFO L226 Difference]: Without dead ends: 1074 [2022-03-18 16:07:12,435 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-03-18 16:07:12,435 INFO L912 BasicCegarLoop]: 783 mSDtfsCounter, 1242 mSDsluCounter, 549 mSDsCounter, 0 mSdLazyCounter, 1310 mSolverCounterSat, 444 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1245 SdHoareTripleChecker+Valid, 1332 SdHoareTripleChecker+Invalid, 1754 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 444 IncrementalHoareTripleChecker+Valid, 1310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-03-18 16:07:12,435 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [1245 Valid, 1332 Invalid, 1754 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [444 Valid, 1310 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-03-18 16:07:12,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1074 states. [2022-03-18 16:07:12,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1074 to 848. [2022-03-18 16:07:12,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 848 states, 663 states have (on average 1.3725490196078431) internal successors, (910), 677 states have internal predecessors, (910), 112 states have call successors, (112), 51 states have call predecessors, (112), 72 states have return successors, (143), 126 states have call predecessors, (143), 104 states have call successors, (143) [2022-03-18 16:07:12,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 848 states to 848 states and 1165 transitions. [2022-03-18 16:07:12,514 INFO L78 Accepts]: Start accepts. Automaton has 848 states and 1165 transitions. Word has length 50 [2022-03-18 16:07:12,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 16:07:12,514 INFO L478 AbstractCegarLoop]: Abstraction has 848 states and 1165 transitions. [2022-03-18 16:07:12,514 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (7), 6 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2022-03-18 16:07:12,514 INFO L276 IsEmpty]: Start isEmpty. Operand 848 states and 1165 transitions. [2022-03-18 16:07:12,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-03-18 16:07:12,517 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 16:07:12,517 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 16:07:12,517 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-03-18 16:07:12,517 INFO L403 AbstractCegarLoop]: === Iteration 15 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 16:07:12,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 16:07:12,517 INFO L85 PathProgramCache]: Analyzing trace with hash 637282241, now seen corresponding path program 1 times [2022-03-18 16:07:12,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 16:07:12,518 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268639902] [2022-03-18 16:07:12,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 16:07:12,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 16:07:12,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:07:12,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 16:07:12,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:07:12,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 16:07:12,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:07:12,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 16:07:12,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:07:12,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-18 16:07:12,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:07:12,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 16:07:12,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:07:12,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 16:07:12,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:07:12,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 16:07:12,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 16:07:12,728 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268639902] [2022-03-18 16:07:12,728 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [268639902] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 16:07:12,728 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 16:07:12,728 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-03-18 16:07:12,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000846171] [2022-03-18 16:07:12,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 16:07:12,729 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-18 16:07:12,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 16:07:12,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-18 16:07:12,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2022-03-18 16:07:12,730 INFO L87 Difference]: Start difference. First operand 848 states and 1165 transitions. Second operand has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (8), 8 states have call predecessors, (8), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2022-03-18 16:07:14,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 16:07:14,353 INFO L93 Difference]: Finished difference Result 996 states and 1410 transitions. [2022-03-18 16:07:14,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-18 16:07:14,354 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (8), 8 states have call predecessors, (8), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) Word has length 52 [2022-03-18 16:07:14,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 16:07:14,358 INFO L225 Difference]: With dead ends: 996 [2022-03-18 16:07:14,358 INFO L226 Difference]: Without dead ends: 991 [2022-03-18 16:07:14,360 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2022-03-18 16:07:14,362 INFO L912 BasicCegarLoop]: 697 mSDtfsCounter, 1522 mSDsluCounter, 699 mSDsCounter, 0 mSdLazyCounter, 1464 mSolverCounterSat, 559 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1525 SdHoareTripleChecker+Valid, 1396 SdHoareTripleChecker+Invalid, 2023 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 559 IncrementalHoareTripleChecker+Valid, 1464 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-03-18 16:07:14,363 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [1525 Valid, 1396 Invalid, 2023 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [559 Valid, 1464 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-03-18 16:07:14,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 991 states. [2022-03-18 16:07:14,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 991 to 867. [2022-03-18 16:07:14,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 867 states, 679 states have (on average 1.369661266568483) internal successors, (930), 694 states have internal predecessors, (930), 113 states have call successors, (113), 52 states have call predecessors, (113), 74 states have return successors, (145), 128 states have call predecessors, (145), 105 states have call successors, (145) [2022-03-18 16:07:14,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 867 states to 867 states and 1188 transitions. [2022-03-18 16:07:14,445 INFO L78 Accepts]: Start accepts. Automaton has 867 states and 1188 transitions. Word has length 52 [2022-03-18 16:07:14,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 16:07:14,445 INFO L478 AbstractCegarLoop]: Abstraction has 867 states and 1188 transitions. [2022-03-18 16:07:14,445 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (8), 8 states have call predecessors, (8), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2022-03-18 16:07:14,445 INFO L276 IsEmpty]: Start isEmpty. Operand 867 states and 1188 transitions. [2022-03-18 16:07:14,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-03-18 16:07:14,447 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 16:07:14,447 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 16:07:14,447 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-03-18 16:07:14,448 INFO L403 AbstractCegarLoop]: === Iteration 16 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 16:07:14,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 16:07:14,448 INFO L85 PathProgramCache]: Analyzing trace with hash 708397377, now seen corresponding path program 1 times [2022-03-18 16:07:14,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 16:07:14,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520479174] [2022-03-18 16:07:14,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 16:07:14,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 16:07:14,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:07:14,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 16:07:14,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:07:14,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 16:07:14,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:07:14,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 16:07:14,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:07:14,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-03-18 16:07:14,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:07:14,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-03-18 16:07:14,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:07:14,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 16:07:14,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 16:07:14,568 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [520479174] [2022-03-18 16:07:14,569 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [520479174] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 16:07:14,569 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 16:07:14,569 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-18 16:07:14,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273294226] [2022-03-18 16:07:14,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 16:07:14,570 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-18 16:07:14,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 16:07:14,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-18 16:07:14,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-03-18 16:07:14,571 INFO L87 Difference]: Start difference. First operand 867 states and 1188 transitions. Second operand has 8 states, 8 states have (on average 4.875) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (10), 7 states have call predecessors, (10), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2022-03-18 16:07:16,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 16:07:16,637 INFO L93 Difference]: Finished difference Result 1203 states and 1692 transitions. [2022-03-18 16:07:16,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-18 16:07:16,638 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (10), 7 states have call predecessors, (10), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) Word has length 54 [2022-03-18 16:07:16,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 16:07:16,641 INFO L225 Difference]: With dead ends: 1203 [2022-03-18 16:07:16,641 INFO L226 Difference]: Without dead ends: 956 [2022-03-18 16:07:16,642 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=67, Unknown=0, NotChecked=0, Total=110 [2022-03-18 16:07:16,643 INFO L912 BasicCegarLoop]: 641 mSDtfsCounter, 685 mSDsluCounter, 554 mSDsCounter, 0 mSdLazyCounter, 2233 mSolverCounterSat, 229 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 718 SdHoareTripleChecker+Valid, 1195 SdHoareTripleChecker+Invalid, 2462 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 229 IncrementalHoareTripleChecker+Valid, 2233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-03-18 16:07:16,643 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [718 Valid, 1195 Invalid, 2462 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [229 Valid, 2233 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-03-18 16:07:16,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 956 states. [2022-03-18 16:07:16,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 956 to 836. [2022-03-18 16:07:16,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 836 states, 655 states have (on average 1.369465648854962) internal successors, (897), 668 states have internal predecessors, (897), 111 states have call successors, (111), 51 states have call predecessors, (111), 69 states have return successors, (140), 123 states have call predecessors, (140), 104 states have call successors, (140) [2022-03-18 16:07:16,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 836 states to 836 states and 1148 transitions. [2022-03-18 16:07:16,723 INFO L78 Accepts]: Start accepts. Automaton has 836 states and 1148 transitions. Word has length 54 [2022-03-18 16:07:16,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 16:07:16,723 INFO L478 AbstractCegarLoop]: Abstraction has 836 states and 1148 transitions. [2022-03-18 16:07:16,724 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (10), 7 states have call predecessors, (10), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2022-03-18 16:07:16,724 INFO L276 IsEmpty]: Start isEmpty. Operand 836 states and 1148 transitions. [2022-03-18 16:07:16,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-03-18 16:07:16,726 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 16:07:16,726 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 16:07:16,726 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-03-18 16:07:16,726 INFO L403 AbstractCegarLoop]: === Iteration 17 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 16:07:16,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 16:07:16,726 INFO L85 PathProgramCache]: Analyzing trace with hash -848829632, now seen corresponding path program 1 times [2022-03-18 16:07:16,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 16:07:16,726 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312604485] [2022-03-18 16:07:16,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 16:07:16,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 16:07:16,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:07:16,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 16:07:16,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:07:16,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 16:07:16,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:07:16,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 16:07:16,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:07:16,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-03-18 16:07:16,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:07:16,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 16:07:16,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:07:16,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 16:07:16,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 16:07:16,877 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312604485] [2022-03-18 16:07:16,877 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1312604485] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 16:07:16,877 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 16:07:16,877 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-18 16:07:16,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700970506] [2022-03-18 16:07:16,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 16:07:16,878 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-18 16:07:16,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 16:07:16,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-18 16:07:16,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2022-03-18 16:07:16,879 INFO L87 Difference]: Start difference. First operand 836 states and 1148 transitions. Second operand has 12 states, 12 states have (on average 3.25) internal successors, (39), 6 states have internal predecessors, (39), 2 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2022-03-18 16:07:19,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 16:07:19,022 INFO L93 Difference]: Finished difference Result 971 states and 1378 transitions. [2022-03-18 16:07:19,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-18 16:07:19,022 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.25) internal successors, (39), 6 states have internal predecessors, (39), 2 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) Word has length 51 [2022-03-18 16:07:19,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 16:07:19,025 INFO L225 Difference]: With dead ends: 971 [2022-03-18 16:07:19,025 INFO L226 Difference]: Without dead ends: 967 [2022-03-18 16:07:19,025 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2022-03-18 16:07:19,026 INFO L912 BasicCegarLoop]: 706 mSDtfsCounter, 720 mSDsluCounter, 1672 mSDsCounter, 0 mSdLazyCounter, 3917 mSolverCounterSat, 279 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 722 SdHoareTripleChecker+Valid, 2378 SdHoareTripleChecker+Invalid, 4196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 279 IncrementalHoareTripleChecker+Valid, 3917 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-03-18 16:07:19,026 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [722 Valid, 2378 Invalid, 4196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [279 Valid, 3917 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-03-18 16:07:19,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 967 states. [2022-03-18 16:07:19,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 967 to 843. [2022-03-18 16:07:19,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 843 states, 661 states have (on average 1.367624810892587) internal successors, (904), 675 states have internal predecessors, (904), 112 states have call successors, (112), 51 states have call predecessors, (112), 69 states have return successors, (141), 124 states have call predecessors, (141), 105 states have call successors, (141) [2022-03-18 16:07:19,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 843 states to 843 states and 1157 transitions. [2022-03-18 16:07:19,107 INFO L78 Accepts]: Start accepts. Automaton has 843 states and 1157 transitions. Word has length 51 [2022-03-18 16:07:19,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 16:07:19,107 INFO L478 AbstractCegarLoop]: Abstraction has 843 states and 1157 transitions. [2022-03-18 16:07:19,108 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.25) internal successors, (39), 6 states have internal predecessors, (39), 2 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2022-03-18 16:07:19,108 INFO L276 IsEmpty]: Start isEmpty. Operand 843 states and 1157 transitions. [2022-03-18 16:07:19,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-03-18 16:07:19,110 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 16:07:19,110 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 16:07:19,110 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-03-18 16:07:19,110 INFO L403 AbstractCegarLoop]: === Iteration 18 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 16:07:19,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 16:07:19,110 INFO L85 PathProgramCache]: Analyzing trace with hash -849106462, now seen corresponding path program 1 times [2022-03-18 16:07:19,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 16:07:19,111 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974307235] [2022-03-18 16:07:19,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 16:07:19,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 16:07:19,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:07:19,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 16:07:19,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:07:19,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 16:07:19,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:07:19,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 16:07:19,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:07:19,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-03-18 16:07:19,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:07:19,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 16:07:19,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:07:19,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 16:07:19,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 16:07:19,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974307235] [2022-03-18 16:07:19,289 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [974307235] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 16:07:19,289 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 16:07:19,289 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-18 16:07:19,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670419411] [2022-03-18 16:07:19,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 16:07:19,289 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-18 16:07:19,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 16:07:19,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-18 16:07:19,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2022-03-18 16:07:19,290 INFO L87 Difference]: Start difference. First operand 843 states and 1157 transitions. Second operand has 12 states, 12 states have (on average 3.25) internal successors, (39), 6 states have internal predecessors, (39), 2 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2022-03-18 16:07:21,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 16:07:21,462 INFO L93 Difference]: Finished difference Result 986 states and 1394 transitions. [2022-03-18 16:07:21,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-18 16:07:21,462 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.25) internal successors, (39), 6 states have internal predecessors, (39), 2 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) Word has length 51 [2022-03-18 16:07:21,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 16:07:21,466 INFO L225 Difference]: With dead ends: 986 [2022-03-18 16:07:21,466 INFO L226 Difference]: Without dead ends: 962 [2022-03-18 16:07:21,466 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2022-03-18 16:07:21,467 INFO L912 BasicCegarLoop]: 708 mSDtfsCounter, 722 mSDsluCounter, 1749 mSDsCounter, 0 mSdLazyCounter, 3847 mSolverCounterSat, 276 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 724 SdHoareTripleChecker+Valid, 2457 SdHoareTripleChecker+Invalid, 4123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 276 IncrementalHoareTripleChecker+Valid, 3847 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-03-18 16:07:21,467 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [724 Valid, 2457 Invalid, 4123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [276 Valid, 3847 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-03-18 16:07:21,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 962 states. [2022-03-18 16:07:21,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 962 to 842. [2022-03-18 16:07:21,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 842 states, 660 states have (on average 1.3666666666666667) internal successors, (902), 674 states have internal predecessors, (902), 112 states have call successors, (112), 51 states have call predecessors, (112), 69 states have return successors, (141), 124 states have call predecessors, (141), 105 states have call successors, (141) [2022-03-18 16:07:21,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 842 states to 842 states and 1155 transitions. [2022-03-18 16:07:21,551 INFO L78 Accepts]: Start accepts. Automaton has 842 states and 1155 transitions. Word has length 51 [2022-03-18 16:07:21,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 16:07:21,552 INFO L478 AbstractCegarLoop]: Abstraction has 842 states and 1155 transitions. [2022-03-18 16:07:21,552 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.25) internal successors, (39), 6 states have internal predecessors, (39), 2 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2022-03-18 16:07:21,552 INFO L276 IsEmpty]: Start isEmpty. Operand 842 states and 1155 transitions. [2022-03-18 16:07:21,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-03-18 16:07:21,554 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 16:07:21,554 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 16:07:21,554 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-03-18 16:07:21,554 INFO L403 AbstractCegarLoop]: === Iteration 19 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 16:07:21,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 16:07:21,555 INFO L85 PathProgramCache]: Analyzing trace with hash -1275498861, now seen corresponding path program 1 times [2022-03-18 16:07:21,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 16:07:21,555 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867200996] [2022-03-18 16:07:21,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 16:07:21,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 16:07:21,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:07:21,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 16:07:21,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:07:21,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 16:07:21,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:07:21,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 16:07:21,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:07:21,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-18 16:07:21,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:07:21,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 16:07:21,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:07:21,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 16:07:21,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:07:21,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 16:07:21,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 16:07:21,831 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867200996] [2022-03-18 16:07:21,831 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [867200996] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 16:07:21,832 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 16:07:21,832 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-03-18 16:07:21,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559800934] [2022-03-18 16:07:21,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 16:07:21,833 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-03-18 16:07:21,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 16:07:21,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-03-18 16:07:21,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2022-03-18 16:07:21,834 INFO L87 Difference]: Start difference. First operand 842 states and 1155 transitions. Second operand has 13 states, 13 states have (on average 3.0) internal successors, (39), 7 states have internal predecessors, (39), 3 states have call successors, (8), 8 states have call predecessors, (8), 4 states have return successors, (6), 5 states have call predecessors, (6), 2 states have call successors, (6) [2022-03-18 16:07:24,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 16:07:24,160 INFO L93 Difference]: Finished difference Result 974 states and 1378 transitions. [2022-03-18 16:07:24,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-18 16:07:24,160 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 7 states have internal predecessors, (39), 3 states have call successors, (8), 8 states have call predecessors, (8), 4 states have return successors, (6), 5 states have call predecessors, (6), 2 states have call successors, (6) Word has length 53 [2022-03-18 16:07:24,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 16:07:24,163 INFO L225 Difference]: With dead ends: 974 [2022-03-18 16:07:24,163 INFO L226 Difference]: Without dead ends: 968 [2022-03-18 16:07:24,164 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=106, Invalid=274, Unknown=0, NotChecked=0, Total=380 [2022-03-18 16:07:24,164 INFO L912 BasicCegarLoop]: 659 mSDtfsCounter, 1241 mSDsluCounter, 750 mSDsCounter, 0 mSdLazyCounter, 2892 mSolverCounterSat, 383 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1267 SdHoareTripleChecker+Valid, 1409 SdHoareTripleChecker+Invalid, 3275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 383 IncrementalHoareTripleChecker+Valid, 2892 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-03-18 16:07:24,164 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [1267 Valid, 1409 Invalid, 3275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [383 Valid, 2892 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-03-18 16:07:24,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 968 states. [2022-03-18 16:07:24,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 968 to 842. [2022-03-18 16:07:24,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 842 states, 660 states have (on average 1.3651515151515152) internal successors, (901), 674 states have internal predecessors, (901), 112 states have call successors, (112), 51 states have call predecessors, (112), 69 states have return successors, (141), 124 states have call predecessors, (141), 105 states have call successors, (141) [2022-03-18 16:07:24,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 842 states to 842 states and 1154 transitions. [2022-03-18 16:07:24,252 INFO L78 Accepts]: Start accepts. Automaton has 842 states and 1154 transitions. Word has length 53 [2022-03-18 16:07:24,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 16:07:24,252 INFO L478 AbstractCegarLoop]: Abstraction has 842 states and 1154 transitions. [2022-03-18 16:07:24,252 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 7 states have internal predecessors, (39), 3 states have call successors, (8), 8 states have call predecessors, (8), 4 states have return successors, (6), 5 states have call predecessors, (6), 2 states have call successors, (6) [2022-03-18 16:07:24,252 INFO L276 IsEmpty]: Start isEmpty. Operand 842 states and 1154 transitions. [2022-03-18 16:07:24,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-03-18 16:07:24,254 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 16:07:24,254 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 16:07:24,255 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-03-18 16:07:24,255 INFO L403 AbstractCegarLoop]: === Iteration 20 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 16:07:24,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 16:07:24,255 INFO L85 PathProgramCache]: Analyzing trace with hash -204304198, now seen corresponding path program 1 times [2022-03-18 16:07:24,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 16:07:24,255 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581208313] [2022-03-18 16:07:24,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 16:07:24,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 16:07:24,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:07:24,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 16:07:24,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:07:24,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 16:07:24,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:07:24,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 16:07:24,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:07:24,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-03-18 16:07:24,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:07:24,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 16:07:24,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:07:24,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 16:07:24,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 16:07:24,405 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581208313] [2022-03-18 16:07:24,405 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [581208313] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 16:07:24,405 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 16:07:24,405 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-03-18 16:07:24,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615625247] [2022-03-18 16:07:24,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 16:07:24,406 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-18 16:07:24,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 16:07:24,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-18 16:07:24,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-03-18 16:07:24,407 INFO L87 Difference]: Start difference. First operand 842 states and 1154 transitions. Second operand has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 5 states have internal predecessors, (40), 3 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2022-03-18 16:07:26,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 16:07:26,609 INFO L93 Difference]: Finished difference Result 979 states and 1383 transitions. [2022-03-18 16:07:26,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-18 16:07:26,609 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 5 states have internal predecessors, (40), 3 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) Word has length 52 [2022-03-18 16:07:26,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 16:07:26,613 INFO L225 Difference]: With dead ends: 979 [2022-03-18 16:07:26,613 INFO L226 Difference]: Without dead ends: 943 [2022-03-18 16:07:26,614 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=86, Invalid=186, Unknown=0, NotChecked=0, Total=272 [2022-03-18 16:07:26,614 INFO L912 BasicCegarLoop]: 659 mSDtfsCounter, 1216 mSDsluCounter, 626 mSDsCounter, 0 mSdLazyCounter, 2335 mSolverCounterSat, 315 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1231 SdHoareTripleChecker+Valid, 1285 SdHoareTripleChecker+Invalid, 2650 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 315 IncrementalHoareTripleChecker+Valid, 2335 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-03-18 16:07:26,615 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [1231 Valid, 1285 Invalid, 2650 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [315 Valid, 2335 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-03-18 16:07:26,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 943 states. [2022-03-18 16:07:26,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 943 to 815. [2022-03-18 16:07:26,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 815 states, 638 states have (on average 1.3746081504702194) internal successors, (877), 651 states have internal predecessors, (877), 109 states have call successors, (109), 49 states have call predecessors, (109), 67 states have return successors, (138), 121 states have call predecessors, (138), 102 states have call successors, (138) [2022-03-18 16:07:26,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 815 states to 815 states and 1124 transitions. [2022-03-18 16:07:26,703 INFO L78 Accepts]: Start accepts. Automaton has 815 states and 1124 transitions. Word has length 52 [2022-03-18 16:07:26,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 16:07:26,703 INFO L478 AbstractCegarLoop]: Abstraction has 815 states and 1124 transitions. [2022-03-18 16:07:26,703 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 5 states have internal predecessors, (40), 3 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2022-03-18 16:07:26,703 INFO L276 IsEmpty]: Start isEmpty. Operand 815 states and 1124 transitions. [2022-03-18 16:07:26,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-03-18 16:07:26,705 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 16:07:26,705 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 16:07:26,705 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-03-18 16:07:26,706 INFO L403 AbstractCegarLoop]: === Iteration 21 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 16:07:26,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 16:07:26,706 INFO L85 PathProgramCache]: Analyzing trace with hash -1517780378, now seen corresponding path program 1 times [2022-03-18 16:07:26,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 16:07:26,706 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114071202] [2022-03-18 16:07:26,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 16:07:26,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 16:07:26,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:07:26,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 16:07:26,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:07:26,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 16:07:26,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:07:26,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 16:07:26,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:07:26,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-18 16:07:26,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:07:26,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 16:07:26,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:07:26,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 16:07:26,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:07:26,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 16:07:26,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 16:07:26,953 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114071202] [2022-03-18 16:07:26,953 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [114071202] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 16:07:26,953 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 16:07:26,953 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-03-18 16:07:26,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787346601] [2022-03-18 16:07:26,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 16:07:26,953 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-03-18 16:07:26,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 16:07:26,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-03-18 16:07:26,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2022-03-18 16:07:26,954 INFO L87 Difference]: Start difference. First operand 815 states and 1124 transitions. Second operand has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 7 states have internal predecessors, (40), 3 states have call successors, (8), 8 states have call predecessors, (8), 4 states have return successors, (6), 5 states have call predecessors, (6), 2 states have call successors, (6) [2022-03-18 16:07:28,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 16:07:28,539 INFO L93 Difference]: Finished difference Result 945 states and 1345 transitions. [2022-03-18 16:07:28,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-18 16:07:28,539 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 7 states have internal predecessors, (40), 3 states have call successors, (8), 8 states have call predecessors, (8), 4 states have return successors, (6), 5 states have call predecessors, (6), 2 states have call successors, (6) Word has length 54 [2022-03-18 16:07:28,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 16:07:28,543 INFO L225 Difference]: With dead ends: 945 [2022-03-18 16:07:28,543 INFO L226 Difference]: Without dead ends: 939 [2022-03-18 16:07:28,544 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=106, Invalid=274, Unknown=0, NotChecked=0, Total=380 [2022-03-18 16:07:28,544 INFO L912 BasicCegarLoop]: 630 mSDtfsCounter, 1933 mSDsluCounter, 553 mSDsCounter, 0 mSdLazyCounter, 1420 mSolverCounterSat, 656 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1959 SdHoareTripleChecker+Valid, 1183 SdHoareTripleChecker+Invalid, 2076 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 656 IncrementalHoareTripleChecker+Valid, 1420 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-03-18 16:07:28,545 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [1959 Valid, 1183 Invalid, 2076 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [656 Valid, 1420 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-03-18 16:07:28,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 939 states. [2022-03-18 16:07:28,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 939 to 815. [2022-03-18 16:07:28,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 815 states, 638 states have (on average 1.3730407523510972) internal successors, (876), 651 states have internal predecessors, (876), 109 states have call successors, (109), 49 states have call predecessors, (109), 67 states have return successors, (138), 121 states have call predecessors, (138), 102 states have call successors, (138) [2022-03-18 16:07:28,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 815 states to 815 states and 1123 transitions. [2022-03-18 16:07:28,646 INFO L78 Accepts]: Start accepts. Automaton has 815 states and 1123 transitions. Word has length 54 [2022-03-18 16:07:28,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 16:07:28,646 INFO L478 AbstractCegarLoop]: Abstraction has 815 states and 1123 transitions. [2022-03-18 16:07:28,646 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 7 states have internal predecessors, (40), 3 states have call successors, (8), 8 states have call predecessors, (8), 4 states have return successors, (6), 5 states have call predecessors, (6), 2 states have call successors, (6) [2022-03-18 16:07:28,646 INFO L276 IsEmpty]: Start isEmpty. Operand 815 states and 1123 transitions. [2022-03-18 16:07:28,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-03-18 16:07:28,649 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 16:07:28,649 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 16:07:28,650 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-03-18 16:07:28,650 INFO L403 AbstractCegarLoop]: === Iteration 22 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 16:07:28,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 16:07:28,650 INFO L85 PathProgramCache]: Analyzing trace with hash 505594524, now seen corresponding path program 1 times [2022-03-18 16:07:28,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 16:07:28,650 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379511572] [2022-03-18 16:07:28,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 16:07:28,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 16:07:28,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:07:28,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 16:07:28,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:07:28,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 16:07:28,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:07:28,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 16:07:28,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:07:28,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-18 16:07:28,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:07:28,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 16:07:28,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:07:28,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 16:07:28,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:07:28,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 16:07:28,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 16:07:28,868 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379511572] [2022-03-18 16:07:28,868 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [379511572] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 16:07:28,868 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 16:07:28,868 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-03-18 16:07:28,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775309774] [2022-03-18 16:07:28,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 16:07:28,869 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-03-18 16:07:28,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 16:07:28,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-03-18 16:07:28,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2022-03-18 16:07:28,875 INFO L87 Difference]: Start difference. First operand 815 states and 1123 transitions. Second operand has 15 states, 15 states have (on average 2.7333333333333334) internal successors, (41), 7 states have internal predecessors, (41), 3 states have call successors, (8), 8 states have call predecessors, (8), 3 states have return successors, (6), 4 states have call predecessors, (6), 2 states have call successors, (6) [2022-03-18 16:07:31,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 16:07:31,455 INFO L93 Difference]: Finished difference Result 966 states and 1372 transitions. [2022-03-18 16:07:31,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-03-18 16:07:31,457 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.7333333333333334) internal successors, (41), 7 states have internal predecessors, (41), 3 states have call successors, (8), 8 states have call predecessors, (8), 3 states have return successors, (6), 4 states have call predecessors, (6), 2 states have call successors, (6) Word has length 55 [2022-03-18 16:07:31,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 16:07:31,459 INFO L225 Difference]: With dead ends: 966 [2022-03-18 16:07:31,460 INFO L226 Difference]: Without dead ends: 926 [2022-03-18 16:07:31,460 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=62, Invalid=280, Unknown=0, NotChecked=0, Total=342 [2022-03-18 16:07:31,461 INFO L912 BasicCegarLoop]: 678 mSDtfsCounter, 402 mSDsluCounter, 2006 mSDsCounter, 0 mSdLazyCounter, 4990 mSolverCounterSat, 168 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 405 SdHoareTripleChecker+Valid, 2684 SdHoareTripleChecker+Invalid, 5158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 168 IncrementalHoareTripleChecker+Valid, 4990 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-03-18 16:07:31,461 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [405 Valid, 2684 Invalid, 5158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [168 Valid, 4990 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-03-18 16:07:31,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 926 states. [2022-03-18 16:07:31,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 926 to 806. [2022-03-18 16:07:31,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 806 states, 631 states have (on average 1.3565768621236134) internal successors, (856), 644 states have internal predecessors, (856), 107 states have call successors, (107), 49 states have call predecessors, (107), 67 states have return successors, (136), 119 states have call predecessors, (136), 100 states have call successors, (136) [2022-03-18 16:07:31,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 806 states to 806 states and 1099 transitions. [2022-03-18 16:07:31,550 INFO L78 Accepts]: Start accepts. Automaton has 806 states and 1099 transitions. Word has length 55 [2022-03-18 16:07:31,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 16:07:31,550 INFO L478 AbstractCegarLoop]: Abstraction has 806 states and 1099 transitions. [2022-03-18 16:07:31,551 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.7333333333333334) internal successors, (41), 7 states have internal predecessors, (41), 3 states have call successors, (8), 8 states have call predecessors, (8), 3 states have return successors, (6), 4 states have call predecessors, (6), 2 states have call successors, (6) [2022-03-18 16:07:31,551 INFO L276 IsEmpty]: Start isEmpty. Operand 806 states and 1099 transitions. [2022-03-18 16:07:31,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-03-18 16:07:31,553 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 16:07:31,553 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 16:07:31,553 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-03-18 16:07:31,553 INFO L403 AbstractCegarLoop]: === Iteration 23 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 16:07:31,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 16:07:31,553 INFO L85 PathProgramCache]: Analyzing trace with hash -1791275328, now seen corresponding path program 1 times [2022-03-18 16:07:31,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 16:07:31,553 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585897036] [2022-03-18 16:07:31,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 16:07:31,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 16:07:31,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:07:31,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 16:07:31,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:07:31,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 16:07:31,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:07:31,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 16:07:31,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:07:31,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-03-18 16:07:31,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:07:31,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-18 16:07:31,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:07:31,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 16:07:31,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:07:31,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 16:07:31,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 16:07:31,793 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585897036] [2022-03-18 16:07:31,793 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [585897036] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 16:07:31,793 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 16:07:31,794 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-03-18 16:07:31,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252688368] [2022-03-18 16:07:31,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 16:07:31,795 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-03-18 16:07:31,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 16:07:31,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-03-18 16:07:31,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2022-03-18 16:07:31,796 INFO L87 Difference]: Start difference. First operand 806 states and 1099 transitions. Second operand has 15 states, 15 states have (on average 2.8) internal successors, (42), 7 states have internal predecessors, (42), 2 states have call successors, (8), 7 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 1 states have call successors, (6) [2022-03-18 16:07:34,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 16:07:34,532 INFO L93 Difference]: Finished difference Result 942 states and 1326 transitions. [2022-03-18 16:07:34,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-18 16:07:34,532 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.8) internal successors, (42), 7 states have internal predecessors, (42), 2 states have call successors, (8), 7 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 1 states have call successors, (6) Word has length 56 [2022-03-18 16:07:34,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 16:07:34,536 INFO L225 Difference]: With dead ends: 942 [2022-03-18 16:07:34,536 INFO L226 Difference]: Without dead ends: 924 [2022-03-18 16:07:34,536 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2022-03-18 16:07:34,537 INFO L912 BasicCegarLoop]: 673 mSDtfsCounter, 351 mSDsluCounter, 2133 mSDsCounter, 0 mSdLazyCounter, 5511 mSolverCounterSat, 140 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 353 SdHoareTripleChecker+Valid, 2806 SdHoareTripleChecker+Invalid, 5651 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 140 IncrementalHoareTripleChecker+Valid, 5511 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-03-18 16:07:34,537 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [353 Valid, 2806 Invalid, 5651 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [140 Valid, 5511 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-03-18 16:07:34,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 924 states. [2022-03-18 16:07:34,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 924 to 804. [2022-03-18 16:07:34,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 804 states, 630 states have (on average 1.3555555555555556) internal successors, (854), 643 states have internal predecessors, (854), 106 states have call successors, (106), 49 states have call predecessors, (106), 67 states have return successors, (135), 118 states have call predecessors, (135), 99 states have call successors, (135) [2022-03-18 16:07:34,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 804 states to 804 states and 1095 transitions. [2022-03-18 16:07:34,623 INFO L78 Accepts]: Start accepts. Automaton has 804 states and 1095 transitions. Word has length 56 [2022-03-18 16:07:34,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 16:07:34,623 INFO L478 AbstractCegarLoop]: Abstraction has 804 states and 1095 transitions. [2022-03-18 16:07:34,623 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.8) internal successors, (42), 7 states have internal predecessors, (42), 2 states have call successors, (8), 7 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 1 states have call successors, (6) [2022-03-18 16:07:34,623 INFO L276 IsEmpty]: Start isEmpty. Operand 804 states and 1095 transitions. [2022-03-18 16:07:34,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-03-18 16:07:34,625 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 16:07:34,625 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 16:07:34,625 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-03-18 16:07:34,625 INFO L403 AbstractCegarLoop]: === Iteration 24 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 16:07:34,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 16:07:34,626 INFO L85 PathProgramCache]: Analyzing trace with hash 388427064, now seen corresponding path program 1 times [2022-03-18 16:07:34,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 16:07:34,626 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508135620] [2022-03-18 16:07:34,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 16:07:34,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 16:07:34,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:07:34,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 16:07:34,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:07:34,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 16:07:34,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:07:34,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 16:07:34,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:07:34,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-03-18 16:07:34,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:07:34,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 16:07:34,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:07:34,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 16:07:34,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:07:34,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 16:07:34,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 16:07:34,850 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508135620] [2022-03-18 16:07:34,850 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [508135620] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 16:07:34,850 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 16:07:34,850 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-03-18 16:07:34,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678140918] [2022-03-18 16:07:34,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 16:07:34,850 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-03-18 16:07:34,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 16:07:34,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-03-18 16:07:34,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2022-03-18 16:07:34,851 INFO L87 Difference]: Start difference. First operand 804 states and 1095 transitions. Second operand has 15 states, 15 states have (on average 2.7333333333333334) internal successors, (41), 7 states have internal predecessors, (41), 2 states have call successors, (8), 7 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 1 states have call successors, (6) [2022-03-18 16:07:37,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 16:07:37,181 INFO L93 Difference]: Finished difference Result 937 states and 1319 transitions. [2022-03-18 16:07:37,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-18 16:07:37,182 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.7333333333333334) internal successors, (41), 7 states have internal predecessors, (41), 2 states have call successors, (8), 7 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 1 states have call successors, (6) Word has length 55 [2022-03-18 16:07:37,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 16:07:37,184 INFO L225 Difference]: With dead ends: 937 [2022-03-18 16:07:37,184 INFO L226 Difference]: Without dead ends: 919 [2022-03-18 16:07:37,185 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2022-03-18 16:07:37,185 INFO L912 BasicCegarLoop]: 657 mSDtfsCounter, 988 mSDsluCounter, 1996 mSDsCounter, 0 mSdLazyCounter, 4646 mSolverCounterSat, 403 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 990 SdHoareTripleChecker+Valid, 2653 SdHoareTripleChecker+Invalid, 5049 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 403 IncrementalHoareTripleChecker+Valid, 4646 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-03-18 16:07:37,186 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [990 Valid, 2653 Invalid, 5049 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [403 Valid, 4646 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-03-18 16:07:37,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 919 states. [2022-03-18 16:07:37,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 919 to 799. [2022-03-18 16:07:37,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 799 states, 627 states have (on average 1.3556618819776713) internal successors, (850), 640 states have internal predecessors, (850), 105 states have call successors, (105), 49 states have call predecessors, (105), 66 states have return successors, (133), 116 states have call predecessors, (133), 98 states have call successors, (133) [2022-03-18 16:07:37,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 799 states to 799 states and 1088 transitions. [2022-03-18 16:07:37,267 INFO L78 Accepts]: Start accepts. Automaton has 799 states and 1088 transitions. Word has length 55 [2022-03-18 16:07:37,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 16:07:37,267 INFO L478 AbstractCegarLoop]: Abstraction has 799 states and 1088 transitions. [2022-03-18 16:07:37,267 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.7333333333333334) internal successors, (41), 7 states have internal predecessors, (41), 2 states have call successors, (8), 7 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 1 states have call successors, (6) [2022-03-18 16:07:37,267 INFO L276 IsEmpty]: Start isEmpty. Operand 799 states and 1088 transitions. [2022-03-18 16:07:37,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-03-18 16:07:37,269 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 16:07:37,269 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 16:07:37,269 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-03-18 16:07:37,269 INFO L403 AbstractCegarLoop]: === Iteration 25 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 16:07:37,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 16:07:37,270 INFO L85 PathProgramCache]: Analyzing trace with hash 562366210, now seen corresponding path program 1 times [2022-03-18 16:07:37,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 16:07:37,270 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123044799] [2022-03-18 16:07:37,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 16:07:37,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 16:07:37,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:07:37,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 16:07:37,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:07:37,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 16:07:37,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:07:37,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 16:07:37,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:07:37,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-18 16:07:37,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:07:37,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-03-18 16:07:37,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:07:37,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-03-18 16:07:37,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:07:37,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 16:07:37,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 16:07:37,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123044799] [2022-03-18 16:07:37,430 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1123044799] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 16:07:37,430 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 16:07:37,430 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-03-18 16:07:37,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513368710] [2022-03-18 16:07:37,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 16:07:37,431 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-18 16:07:37,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 16:07:37,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-18 16:07:37,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-03-18 16:07:37,432 INFO L87 Difference]: Start difference. First operand 799 states and 1088 transitions. Second operand has 10 states, 10 states have (on average 4.2) internal successors, (42), 4 states have internal predecessors, (42), 3 states have call successors, (8), 8 states have call predecessors, (8), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-03-18 16:07:39,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 16:07:39,000 INFO L93 Difference]: Finished difference Result 984 states and 1370 transitions. [2022-03-18 16:07:39,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-18 16:07:39,000 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.2) internal successors, (42), 4 states have internal predecessors, (42), 3 states have call successors, (8), 8 states have call predecessors, (8), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 56 [2022-03-18 16:07:39,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 16:07:39,004 INFO L225 Difference]: With dead ends: 984 [2022-03-18 16:07:39,004 INFO L226 Difference]: Without dead ends: 941 [2022-03-18 16:07:39,004 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2022-03-18 16:07:39,005 INFO L912 BasicCegarLoop]: 678 mSDtfsCounter, 1877 mSDsluCounter, 540 mSDsCounter, 0 mSdLazyCounter, 1272 mSolverCounterSat, 512 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1887 SdHoareTripleChecker+Valid, 1218 SdHoareTripleChecker+Invalid, 1784 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 512 IncrementalHoareTripleChecker+Valid, 1272 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-03-18 16:07:39,005 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [1887 Valid, 1218 Invalid, 1784 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [512 Valid, 1272 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-03-18 16:07:39,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 941 states. [2022-03-18 16:07:39,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 941 to 799. [2022-03-18 16:07:39,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 799 states, 627 states have (on average 1.354066985645933) internal successors, (849), 640 states have internal predecessors, (849), 105 states have call successors, (105), 49 states have call predecessors, (105), 66 states have return successors, (133), 116 states have call predecessors, (133), 98 states have call successors, (133) [2022-03-18 16:07:39,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 799 states to 799 states and 1087 transitions. [2022-03-18 16:07:39,096 INFO L78 Accepts]: Start accepts. Automaton has 799 states and 1087 transitions. Word has length 56 [2022-03-18 16:07:39,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 16:07:39,096 INFO L478 AbstractCegarLoop]: Abstraction has 799 states and 1087 transitions. [2022-03-18 16:07:39,096 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.2) internal successors, (42), 4 states have internal predecessors, (42), 3 states have call successors, (8), 8 states have call predecessors, (8), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-03-18 16:07:39,096 INFO L276 IsEmpty]: Start isEmpty. Operand 799 states and 1087 transitions. [2022-03-18 16:07:39,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-03-18 16:07:39,098 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 16:07:39,098 INFO L500 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 16:07:39,099 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-03-18 16:07:39,099 INFO L403 AbstractCegarLoop]: === Iteration 26 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 16:07:39,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 16:07:39,099 INFO L85 PathProgramCache]: Analyzing trace with hash -514626408, now seen corresponding path program 1 times [2022-03-18 16:07:39,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 16:07:39,099 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511705382] [2022-03-18 16:07:39,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 16:07:39,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 16:07:39,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:07:39,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 16:07:39,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:07:39,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 16:07:39,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:07:39,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 16:07:39,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:07:39,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-03-18 16:07:39,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:07:39,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-03-18 16:07:39,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:07:39,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-18 16:07:39,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:07:39,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 16:07:39,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:07:39,254 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 16:07:39,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 16:07:39,254 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511705382] [2022-03-18 16:07:39,254 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [511705382] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 16:07:39,254 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1301061584] [2022-03-18 16:07:39,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 16:07:39,254 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 16:07:39,254 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 16:07:39,259 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 16:07:39,306 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-03-18 16:07:39,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:07:39,528 INFO L263 TraceCheckSpWp]: Trace formula consists of 837 conjuncts, 6 conjunts are in the unsatisfiable core [2022-03-18 16:07:39,538 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 16:07:39,877 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 16:07:39,878 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 16:07:40,134 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 16:07:40,134 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1301061584] provided 1 perfect and 1 imperfect interpolant sequences [2022-03-18 16:07:40,134 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-03-18 16:07:40,135 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9, 5] total 15 [2022-03-18 16:07:40,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519087975] [2022-03-18 16:07:40,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 16:07:40,136 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-18 16:07:40,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 16:07:40,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-18 16:07:40,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2022-03-18 16:07:40,137 INFO L87 Difference]: Start difference. First operand 799 states and 1087 transitions. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 4 states have call successors, (12), 4 states have call predecessors, (12), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-03-18 16:07:40,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 16:07:40,540 INFO L93 Difference]: Finished difference Result 1117 states and 1518 transitions. [2022-03-18 16:07:40,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-18 16:07:40,541 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 4 states have call successors, (12), 4 states have call predecessors, (12), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 74 [2022-03-18 16:07:40,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 16:07:40,544 INFO L225 Difference]: With dead ends: 1117 [2022-03-18 16:07:40,545 INFO L226 Difference]: Without dead ends: 953 [2022-03-18 16:07:40,545 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 151 SyntacticMatches, 4 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2022-03-18 16:07:40,546 INFO L912 BasicCegarLoop]: 693 mSDtfsCounter, 870 mSDsluCounter, 447 mSDsCounter, 0 mSdLazyCounter, 231 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 875 SdHoareTripleChecker+Valid, 1140 SdHoareTripleChecker+Invalid, 297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-18 16:07:40,546 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [875 Valid, 1140 Invalid, 297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 231 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-18 16:07:40,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 953 states. [2022-03-18 16:07:40,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 953 to 837. [2022-03-18 16:07:40,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 837 states, 658 states have (on average 1.3541033434650456) internal successors, (891), 671 states have internal predecessors, (891), 108 states have call successors, (108), 51 states have call predecessors, (108), 70 states have return successors, (143), 121 states have call predecessors, (143), 101 states have call successors, (143) [2022-03-18 16:07:40,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 837 states to 837 states and 1142 transitions. [2022-03-18 16:07:40,667 INFO L78 Accepts]: Start accepts. Automaton has 837 states and 1142 transitions. Word has length 74 [2022-03-18 16:07:40,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 16:07:40,667 INFO L478 AbstractCegarLoop]: Abstraction has 837 states and 1142 transitions. [2022-03-18 16:07:40,667 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 4 states have call successors, (12), 4 states have call predecessors, (12), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-03-18 16:07:40,667 INFO L276 IsEmpty]: Start isEmpty. Operand 837 states and 1142 transitions. [2022-03-18 16:07:40,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-03-18 16:07:40,669 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 16:07:40,669 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 16:07:40,695 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-03-18 16:07:40,886 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-03-18 16:07:40,886 INFO L403 AbstractCegarLoop]: === Iteration 27 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 16:07:40,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 16:07:40,887 INFO L85 PathProgramCache]: Analyzing trace with hash 233977310, now seen corresponding path program 1 times [2022-03-18 16:07:40,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 16:07:40,887 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214975163] [2022-03-18 16:07:40,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 16:07:40,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 16:07:40,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:07:40,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 16:07:40,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:07:41,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 16:07:41,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:07:41,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 16:07:41,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:07:41,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-18 16:07:41,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:07:41,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-18 16:07:41,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:07:41,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-03-18 16:07:41,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:07:41,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 16:07:41,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:07:41,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 16:07:41,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 16:07:41,277 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214975163] [2022-03-18 16:07:41,277 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1214975163] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 16:07:41,277 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 16:07:41,277 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-18 16:07:41,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922235020] [2022-03-18 16:07:41,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 16:07:41,278 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-18 16:07:41,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 16:07:41,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-18 16:07:41,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=327, Unknown=0, NotChecked=0, Total=380 [2022-03-18 16:07:41,279 INFO L87 Difference]: Start difference. First operand 837 states and 1142 transitions. Second operand has 20 states, 19 states have (on average 2.4210526315789473) internal successors, (46), 10 states have internal predecessors, (46), 4 states have call successors, (9), 9 states have call predecessors, (9), 4 states have return successors, (7), 5 states have call predecessors, (7), 3 states have call successors, (7) [2022-03-18 16:07:44,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 16:07:44,674 INFO L93 Difference]: Finished difference Result 984 states and 1382 transitions. [2022-03-18 16:07:44,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-03-18 16:07:44,675 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 2.4210526315789473) internal successors, (46), 10 states have internal predecessors, (46), 4 states have call successors, (9), 9 states have call predecessors, (9), 4 states have return successors, (7), 5 states have call predecessors, (7), 3 states have call successors, (7) Word has length 62 [2022-03-18 16:07:44,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 16:07:44,678 INFO L225 Difference]: With dead ends: 984 [2022-03-18 16:07:44,678 INFO L226 Difference]: Without dead ends: 960 [2022-03-18 16:07:44,678 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=99, Invalid=603, Unknown=0, NotChecked=0, Total=702 [2022-03-18 16:07:44,679 INFO L912 BasicCegarLoop]: 654 mSDtfsCounter, 403 mSDsluCounter, 2716 mSDsCounter, 0 mSdLazyCounter, 6400 mSolverCounterSat, 173 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 409 SdHoareTripleChecker+Valid, 3370 SdHoareTripleChecker+Invalid, 6573 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 173 IncrementalHoareTripleChecker+Valid, 6400 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-03-18 16:07:44,679 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [409 Valid, 3370 Invalid, 6573 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [173 Valid, 6400 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2022-03-18 16:07:44,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 960 states. [2022-03-18 16:07:44,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 960 to 835. [2022-03-18 16:07:44,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 835 states, 657 states have (on average 1.3531202435312024) internal successors, (889), 670 states have internal predecessors, (889), 107 states have call successors, (107), 51 states have call predecessors, (107), 70 states have return successors, (142), 120 states have call predecessors, (142), 100 states have call successors, (142) [2022-03-18 16:07:44,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 835 states to 835 states and 1138 transitions. [2022-03-18 16:07:44,764 INFO L78 Accepts]: Start accepts. Automaton has 835 states and 1138 transitions. Word has length 62 [2022-03-18 16:07:44,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 16:07:44,764 INFO L478 AbstractCegarLoop]: Abstraction has 835 states and 1138 transitions. [2022-03-18 16:07:44,765 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 2.4210526315789473) internal successors, (46), 10 states have internal predecessors, (46), 4 states have call successors, (9), 9 states have call predecessors, (9), 4 states have return successors, (7), 5 states have call predecessors, (7), 3 states have call successors, (7) [2022-03-18 16:07:44,765 INFO L276 IsEmpty]: Start isEmpty. Operand 835 states and 1138 transitions. [2022-03-18 16:07:44,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-03-18 16:07:44,766 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 16:07:44,766 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 16:07:44,766 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-03-18 16:07:44,767 INFO L403 AbstractCegarLoop]: === Iteration 28 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 16:07:44,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 16:07:44,767 INFO L85 PathProgramCache]: Analyzing trace with hash 2049298278, now seen corresponding path program 1 times [2022-03-18 16:07:44,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 16:07:44,767 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292993740] [2022-03-18 16:07:44,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 16:07:44,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 16:07:44,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:07:44,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 16:07:44,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:07:44,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 16:07:44,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:07:44,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 16:07:44,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:07:44,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-18 16:07:44,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:07:44,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-18 16:07:44,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:07:45,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-18 16:07:45,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:07:45,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 16:07:45,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:07:45,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 16:07:45,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 16:07:45,077 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292993740] [2022-03-18 16:07:45,077 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1292993740] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 16:07:45,077 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 16:07:45,077 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-18 16:07:45,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609442137] [2022-03-18 16:07:45,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 16:07:45,078 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-18 16:07:45,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 16:07:45,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-18 16:07:45,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=327, Unknown=0, NotChecked=0, Total=380 [2022-03-18 16:07:45,078 INFO L87 Difference]: Start difference. First operand 835 states and 1138 transitions. Second operand has 20 states, 19 states have (on average 2.263157894736842) internal successors, (43), 10 states have internal predecessors, (43), 4 states have call successors, (9), 9 states have call predecessors, (9), 4 states have return successors, (7), 5 states have call predecessors, (7), 3 states have call successors, (7) [2022-03-18 16:07:48,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 16:07:48,390 INFO L93 Difference]: Finished difference Result 982 states and 1378 transitions. [2022-03-18 16:07:48,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-03-18 16:07:48,391 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 2.263157894736842) internal successors, (43), 10 states have internal predecessors, (43), 4 states have call successors, (9), 9 states have call predecessors, (9), 4 states have return successors, (7), 5 states have call predecessors, (7), 3 states have call successors, (7) Word has length 59 [2022-03-18 16:07:48,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 16:07:48,393 INFO L225 Difference]: With dead ends: 982 [2022-03-18 16:07:48,393 INFO L226 Difference]: Without dead ends: 956 [2022-03-18 16:07:48,394 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=99, Invalid=603, Unknown=0, NotChecked=0, Total=702 [2022-03-18 16:07:48,394 INFO L912 BasicCegarLoop]: 633 mSDtfsCounter, 1011 mSDsluCounter, 2792 mSDsCounter, 0 mSdLazyCounter, 6760 mSolverCounterSat, 421 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1015 SdHoareTripleChecker+Valid, 3425 SdHoareTripleChecker+Invalid, 7181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 421 IncrementalHoareTripleChecker+Valid, 6760 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-03-18 16:07:48,395 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [1015 Valid, 3425 Invalid, 7181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [421 Valid, 6760 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-03-18 16:07:48,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 956 states. [2022-03-18 16:07:48,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 956 to 834. [2022-03-18 16:07:48,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 834 states, 656 states have (on average 1.3384146341463414) internal successors, (878), 669 states have internal predecessors, (878), 107 states have call successors, (107), 51 states have call predecessors, (107), 70 states have return successors, (142), 120 states have call predecessors, (142), 100 states have call successors, (142) [2022-03-18 16:07:48,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 834 states to 834 states and 1127 transitions. [2022-03-18 16:07:48,479 INFO L78 Accepts]: Start accepts. Automaton has 834 states and 1127 transitions. Word has length 59 [2022-03-18 16:07:48,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 16:07:48,480 INFO L478 AbstractCegarLoop]: Abstraction has 834 states and 1127 transitions. [2022-03-18 16:07:48,480 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 2.263157894736842) internal successors, (43), 10 states have internal predecessors, (43), 4 states have call successors, (9), 9 states have call predecessors, (9), 4 states have return successors, (7), 5 states have call predecessors, (7), 3 states have call successors, (7) [2022-03-18 16:07:48,480 INFO L276 IsEmpty]: Start isEmpty. Operand 834 states and 1127 transitions. [2022-03-18 16:07:48,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-03-18 16:07:48,482 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 16:07:48,482 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 16:07:48,482 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-03-18 16:07:48,482 INFO L403 AbstractCegarLoop]: === Iteration 29 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 16:07:48,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 16:07:48,482 INFO L85 PathProgramCache]: Analyzing trace with hash -1081135518, now seen corresponding path program 1 times [2022-03-18 16:07:48,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 16:07:48,483 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671401943] [2022-03-18 16:07:48,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 16:07:48,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 16:07:48,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:07:48,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 16:07:48,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:07:48,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 16:07:48,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:07:48,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 16:07:48,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:07:48,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-18 16:07:48,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:07:48,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 16:07:48,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:07:48,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 16:07:48,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:07:48,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 16:07:48,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 16:07:48,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671401943] [2022-03-18 16:07:48,779 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [671401943] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 16:07:48,779 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 16:07:48,779 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-03-18 16:07:48,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437650172] [2022-03-18 16:07:48,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 16:07:48,779 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-03-18 16:07:48,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 16:07:48,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-03-18 16:07:48,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2022-03-18 16:07:48,781 INFO L87 Difference]: Start difference. First operand 834 states and 1127 transitions. Second operand has 16 states, 16 states have (on average 2.75) internal successors, (44), 8 states have internal predecessors, (44), 2 states have call successors, (8), 7 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 1 states have call successors, (6) [2022-03-18 16:07:52,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 16:07:52,111 INFO L93 Difference]: Finished difference Result 971 states and 1352 transitions. [2022-03-18 16:07:52,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-03-18 16:07:52,111 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.75) internal successors, (44), 8 states have internal predecessors, (44), 2 states have call successors, (8), 7 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 1 states have call successors, (6) Word has length 58 [2022-03-18 16:07:52,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 16:07:52,114 INFO L225 Difference]: With dead ends: 971 [2022-03-18 16:07:52,114 INFO L226 Difference]: Without dead ends: 951 [2022-03-18 16:07:52,114 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2022-03-18 16:07:52,115 INFO L912 BasicCegarLoop]: 648 mSDtfsCounter, 326 mSDsluCounter, 2318 mSDsCounter, 0 mSdLazyCounter, 6209 mSolverCounterSat, 136 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 328 SdHoareTripleChecker+Valid, 2966 SdHoareTripleChecker+Invalid, 6345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 136 IncrementalHoareTripleChecker+Valid, 6209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-03-18 16:07:52,115 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [328 Valid, 2966 Invalid, 6345 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [136 Valid, 6209 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2022-03-18 16:07:52,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 951 states. [2022-03-18 16:07:52,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 951 to 831. [2022-03-18 16:07:52,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 831 states, 654 states have (on average 1.337920489296636) internal successors, (875), 667 states have internal predecessors, (875), 106 states have call successors, (106), 51 states have call predecessors, (106), 70 states have return successors, (141), 119 states have call predecessors, (141), 99 states have call successors, (141) [2022-03-18 16:07:52,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 831 states to 831 states and 1122 transitions. [2022-03-18 16:07:52,205 INFO L78 Accepts]: Start accepts. Automaton has 831 states and 1122 transitions. Word has length 58 [2022-03-18 16:07:52,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 16:07:52,205 INFO L478 AbstractCegarLoop]: Abstraction has 831 states and 1122 transitions. [2022-03-18 16:07:52,205 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.75) internal successors, (44), 8 states have internal predecessors, (44), 2 states have call successors, (8), 7 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 1 states have call successors, (6) [2022-03-18 16:07:52,206 INFO L276 IsEmpty]: Start isEmpty. Operand 831 states and 1122 transitions. [2022-03-18 16:07:52,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-03-18 16:07:52,207 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 16:07:52,207 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 16:07:52,208 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-03-18 16:07:52,208 INFO L403 AbstractCegarLoop]: === Iteration 30 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 16:07:52,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 16:07:52,208 INFO L85 PathProgramCache]: Analyzing trace with hash -1820752266, now seen corresponding path program 1 times [2022-03-18 16:07:52,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 16:07:52,208 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178046478] [2022-03-18 16:07:52,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 16:07:52,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 16:07:52,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:07:52,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 16:07:52,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:07:52,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 16:07:52,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:07:52,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 16:07:52,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:07:52,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-18 16:07:52,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:07:52,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 16:07:52,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:07:52,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-18 16:07:52,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:07:52,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 16:07:52,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 16:07:52,472 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178046478] [2022-03-18 16:07:52,472 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1178046478] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 16:07:52,472 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 16:07:52,472 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-03-18 16:07:52,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54889866] [2022-03-18 16:07:52,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 16:07:52,472 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-03-18 16:07:52,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 16:07:52,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-03-18 16:07:52,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2022-03-18 16:07:52,473 INFO L87 Difference]: Start difference. First operand 831 states and 1122 transitions. Second operand has 16 states, 16 states have (on average 2.8125) internal successors, (45), 8 states have internal predecessors, (45), 3 states have call successors, (8), 8 states have call predecessors, (8), 3 states have return successors, (6), 4 states have call predecessors, (6), 2 states have call successors, (6) [2022-03-18 16:07:54,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 16:07:54,633 INFO L93 Difference]: Finished difference Result 1004 states and 1384 transitions. [2022-03-18 16:07:54,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-03-18 16:07:54,633 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.8125) internal successors, (45), 8 states have internal predecessors, (45), 3 states have call successors, (8), 8 states have call predecessors, (8), 3 states have return successors, (6), 4 states have call predecessors, (6), 2 states have call successors, (6) Word has length 59 [2022-03-18 16:07:54,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 16:07:54,635 INFO L225 Difference]: With dead ends: 1004 [2022-03-18 16:07:54,635 INFO L226 Difference]: Without dead ends: 936 [2022-03-18 16:07:54,636 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=92, Invalid=414, Unknown=0, NotChecked=0, Total=506 [2022-03-18 16:07:54,636 INFO L912 BasicCegarLoop]: 624 mSDtfsCounter, 1287 mSDsluCounter, 1721 mSDsCounter, 0 mSdLazyCounter, 3702 mSolverCounterSat, 547 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1291 SdHoareTripleChecker+Valid, 2345 SdHoareTripleChecker+Invalid, 4249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 547 IncrementalHoareTripleChecker+Valid, 3702 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-03-18 16:07:54,637 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [1291 Valid, 2345 Invalid, 4249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [547 Valid, 3702 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-03-18 16:07:54,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 936 states. [2022-03-18 16:07:54,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 936 to 819. [2022-03-18 16:07:54,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 819 states, 645 states have (on average 1.3333333333333333) internal successors, (860), 658 states have internal predecessors, (860), 103 states have call successors, (103), 51 states have call predecessors, (103), 70 states have return successors, (138), 116 states have call predecessors, (138), 96 states have call successors, (138) [2022-03-18 16:07:54,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 819 states to 819 states and 1101 transitions. [2022-03-18 16:07:54,724 INFO L78 Accepts]: Start accepts. Automaton has 819 states and 1101 transitions. Word has length 59 [2022-03-18 16:07:54,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 16:07:54,724 INFO L478 AbstractCegarLoop]: Abstraction has 819 states and 1101 transitions. [2022-03-18 16:07:54,724 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.8125) internal successors, (45), 8 states have internal predecessors, (45), 3 states have call successors, (8), 8 states have call predecessors, (8), 3 states have return successors, (6), 4 states have call predecessors, (6), 2 states have call successors, (6) [2022-03-18 16:07:54,724 INFO L276 IsEmpty]: Start isEmpty. Operand 819 states and 1101 transitions. [2022-03-18 16:07:54,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-03-18 16:07:54,726 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 16:07:54,726 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 16:07:54,726 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-03-18 16:07:54,726 INFO L403 AbstractCegarLoop]: === Iteration 31 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 16:07:54,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 16:07:54,727 INFO L85 PathProgramCache]: Analyzing trace with hash 600816654, now seen corresponding path program 1 times [2022-03-18 16:07:54,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 16:07:54,727 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052691290] [2022-03-18 16:07:54,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 16:07:54,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 16:07:54,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:07:54,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 16:07:54,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:07:54,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 16:07:54,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:07:54,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 16:07:54,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:07:54,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-18 16:07:54,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:07:54,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-18 16:07:54,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:07:54,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-18 16:07:54,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:07:54,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-18 16:07:54,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:07:54,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 16:07:54,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 16:07:54,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1052691290] [2022-03-18 16:07:54,905 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1052691290] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 16:07:54,905 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 16:07:54,905 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-03-18 16:07:54,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087768758] [2022-03-18 16:07:54,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 16:07:54,905 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-18 16:07:54,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 16:07:54,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-18 16:07:54,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-03-18 16:07:54,906 INFO L87 Difference]: Start difference. First operand 819 states and 1101 transitions. Second operand has 11 states, 11 states have (on average 4.0) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-03-18 16:07:56,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 16:07:56,972 INFO L93 Difference]: Finished difference Result 1100 states and 1559 transitions. [2022-03-18 16:07:56,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-18 16:07:56,973 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.0) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 60 [2022-03-18 16:07:56,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 16:07:56,975 INFO L225 Difference]: With dead ends: 1100 [2022-03-18 16:07:56,975 INFO L226 Difference]: Without dead ends: 989 [2022-03-18 16:07:56,976 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2022-03-18 16:07:56,976 INFO L912 BasicCegarLoop]: 605 mSDtfsCounter, 974 mSDsluCounter, 1241 mSDsCounter, 0 mSdLazyCounter, 2510 mSolverCounterSat, 434 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 976 SdHoareTripleChecker+Valid, 1846 SdHoareTripleChecker+Invalid, 2944 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 434 IncrementalHoareTripleChecker+Valid, 2510 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-03-18 16:07:56,976 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [976 Valid, 1846 Invalid, 2944 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [434 Valid, 2510 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-03-18 16:07:56,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 989 states. [2022-03-18 16:07:57,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 989 to 826. [2022-03-18 16:07:57,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 826 states, 650 states have (on average 1.333846153846154) internal successors, (867), 664 states have internal predecessors, (867), 104 states have call successors, (104), 51 states have call predecessors, (104), 71 states have return successors, (146), 117 states have call predecessors, (146), 97 states have call successors, (146) [2022-03-18 16:07:57,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 826 states to 826 states and 1117 transitions. [2022-03-18 16:07:57,048 INFO L78 Accepts]: Start accepts. Automaton has 826 states and 1117 transitions. Word has length 60 [2022-03-18 16:07:57,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 16:07:57,048 INFO L478 AbstractCegarLoop]: Abstraction has 826 states and 1117 transitions. [2022-03-18 16:07:57,048 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.0) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-03-18 16:07:57,048 INFO L276 IsEmpty]: Start isEmpty. Operand 826 states and 1117 transitions. [2022-03-18 16:07:57,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-03-18 16:07:57,050 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 16:07:57,050 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 16:07:57,050 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-03-18 16:07:57,050 INFO L403 AbstractCegarLoop]: === Iteration 32 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 16:07:57,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 16:07:57,050 INFO L85 PathProgramCache]: Analyzing trace with hash 875576268, now seen corresponding path program 1 times [2022-03-18 16:07:57,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 16:07:57,051 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470703883] [2022-03-18 16:07:57,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 16:07:57,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 16:07:57,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:07:57,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 16:07:57,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:07:57,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 16:07:57,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:07:57,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 16:07:57,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:07:57,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-18 16:07:57,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:07:57,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-18 16:07:57,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:07:57,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-18 16:07:57,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:07:57,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-18 16:07:57,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:07:57,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 16:07:57,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 16:07:57,282 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470703883] [2022-03-18 16:07:57,282 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1470703883] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 16:07:57,283 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 16:07:57,283 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-03-18 16:07:57,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519798566] [2022-03-18 16:07:57,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 16:07:57,283 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-03-18 16:07:57,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 16:07:57,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-03-18 16:07:57,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2022-03-18 16:07:57,284 INFO L87 Difference]: Start difference. First operand 826 states and 1117 transitions. Second operand has 16 states, 16 states have (on average 2.75) internal successors, (44), 7 states have internal predecessors, (44), 3 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 4 states have call predecessors, (7), 2 states have call successors, (7) [2022-03-18 16:07:59,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 16:07:59,793 INFO L93 Difference]: Finished difference Result 969 states and 1356 transitions. [2022-03-18 16:07:59,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-03-18 16:07:59,794 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.75) internal successors, (44), 7 states have internal predecessors, (44), 3 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 4 states have call predecessors, (7), 2 states have call successors, (7) Word has length 60 [2022-03-18 16:07:59,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 16:07:59,797 INFO L225 Difference]: With dead ends: 969 [2022-03-18 16:07:59,797 INFO L226 Difference]: Without dead ends: 944 [2022-03-18 16:07:59,799 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2022-03-18 16:07:59,800 INFO L912 BasicCegarLoop]: 610 mSDtfsCounter, 641 mSDsluCounter, 2192 mSDsCounter, 0 mSdLazyCounter, 4530 mSolverCounterSat, 259 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 644 SdHoareTripleChecker+Valid, 2802 SdHoareTripleChecker+Invalid, 4789 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 259 IncrementalHoareTripleChecker+Valid, 4530 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-03-18 16:07:59,800 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [644 Valid, 2802 Invalid, 4789 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [259 Valid, 4530 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-03-18 16:07:59,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 944 states. [2022-03-18 16:07:59,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 944 to 824. [2022-03-18 16:07:59,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 824 states, 649 states have (on average 1.3328197226502312) internal successors, (865), 663 states have internal predecessors, (865), 103 states have call successors, (103), 51 states have call predecessors, (103), 71 states have return successors, (145), 116 states have call predecessors, (145), 96 states have call successors, (145) [2022-03-18 16:07:59,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 824 states to 824 states and 1113 transitions. [2022-03-18 16:07:59,881 INFO L78 Accepts]: Start accepts. Automaton has 824 states and 1113 transitions. Word has length 60 [2022-03-18 16:07:59,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 16:07:59,881 INFO L478 AbstractCegarLoop]: Abstraction has 824 states and 1113 transitions. [2022-03-18 16:07:59,882 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.75) internal successors, (44), 7 states have internal predecessors, (44), 3 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 4 states have call predecessors, (7), 2 states have call successors, (7) [2022-03-18 16:07:59,882 INFO L276 IsEmpty]: Start isEmpty. Operand 824 states and 1113 transitions. [2022-03-18 16:07:59,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-03-18 16:07:59,883 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 16:07:59,883 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 16:07:59,883 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-03-18 16:07:59,883 INFO L403 AbstractCegarLoop]: === Iteration 33 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 16:07:59,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 16:07:59,883 INFO L85 PathProgramCache]: Analyzing trace with hash -1391350355, now seen corresponding path program 1 times [2022-03-18 16:07:59,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 16:07:59,884 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214213659] [2022-03-18 16:07:59,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 16:07:59,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 16:07:59,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:07:59,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 16:07:59,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:07:59,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 16:07:59,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:08:00,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 16:08:00,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:08:00,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-18 16:08:00,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:08:00,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 16:08:00,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:08:00,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-03-18 16:08:00,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:08:00,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 16:08:00,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 16:08:00,086 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214213659] [2022-03-18 16:08:00,086 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [214213659] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 16:08:00,086 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 16:08:00,086 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-03-18 16:08:00,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115026156] [2022-03-18 16:08:00,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 16:08:00,087 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-18 16:08:00,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 16:08:00,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-18 16:08:00,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2022-03-18 16:08:00,087 INFO L87 Difference]: Start difference. First operand 824 states and 1113 transitions. Second operand has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (8), 8 states have call predecessors, (8), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2022-03-18 16:08:01,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 16:08:01,481 INFO L93 Difference]: Finished difference Result 978 states and 1360 transitions. [2022-03-18 16:08:01,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-18 16:08:01,482 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (8), 8 states have call predecessors, (8), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) Word has length 60 [2022-03-18 16:08:01,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 16:08:01,485 INFO L225 Difference]: With dead ends: 978 [2022-03-18 16:08:01,485 INFO L226 Difference]: Without dead ends: 946 [2022-03-18 16:08:01,486 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2022-03-18 16:08:01,486 INFO L912 BasicCegarLoop]: 606 mSDtfsCounter, 1233 mSDsluCounter, 899 mSDsCounter, 0 mSdLazyCounter, 1630 mSolverCounterSat, 499 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1235 SdHoareTripleChecker+Valid, 1505 SdHoareTripleChecker+Invalid, 2129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 499 IncrementalHoareTripleChecker+Valid, 1630 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-03-18 16:08:01,486 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [1235 Valid, 1505 Invalid, 2129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [499 Valid, 1630 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-03-18 16:08:01,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 946 states. [2022-03-18 16:08:01,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 946 to 824. [2022-03-18 16:08:01,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 824 states, 649 states have (on average 1.3312788906009245) internal successors, (864), 663 states have internal predecessors, (864), 103 states have call successors, (103), 51 states have call predecessors, (103), 71 states have return successors, (145), 116 states have call predecessors, (145), 96 states have call successors, (145) [2022-03-18 16:08:01,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 824 states to 824 states and 1112 transitions. [2022-03-18 16:08:01,583 INFO L78 Accepts]: Start accepts. Automaton has 824 states and 1112 transitions. Word has length 60 [2022-03-18 16:08:01,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 16:08:01,583 INFO L478 AbstractCegarLoop]: Abstraction has 824 states and 1112 transitions. [2022-03-18 16:08:01,583 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (8), 8 states have call predecessors, (8), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2022-03-18 16:08:01,583 INFO L276 IsEmpty]: Start isEmpty. Operand 824 states and 1112 transitions. [2022-03-18 16:08:01,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-03-18 16:08:01,585 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 16:08:01,585 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 16:08:01,585 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-03-18 16:08:01,585 INFO L403 AbstractCegarLoop]: === Iteration 34 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 16:08:01,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 16:08:01,586 INFO L85 PathProgramCache]: Analyzing trace with hash -1900823445, now seen corresponding path program 1 times [2022-03-18 16:08:01,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 16:08:01,586 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139628343] [2022-03-18 16:08:01,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 16:08:01,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 16:08:01,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:08:01,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 16:08:01,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:08:01,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 16:08:01,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:08:01,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 16:08:01,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:08:01,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-18 16:08:01,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:08:01,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 16:08:01,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:08:01,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-03-18 16:08:01,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:08:01,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 16:08:01,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 16:08:01,860 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139628343] [2022-03-18 16:08:01,860 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [139628343] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 16:08:01,861 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 16:08:01,861 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-03-18 16:08:01,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594519334] [2022-03-18 16:08:01,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 16:08:01,861 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-03-18 16:08:01,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 16:08:01,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-03-18 16:08:01,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2022-03-18 16:08:01,862 INFO L87 Difference]: Start difference. First operand 824 states and 1112 transitions. Second operand has 16 states, 16 states have (on average 2.875) internal successors, (46), 8 states have internal predecessors, (46), 3 states have call successors, (8), 8 states have call predecessors, (8), 3 states have return successors, (6), 4 states have call predecessors, (6), 2 states have call successors, (6) [2022-03-18 16:08:04,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 16:08:04,469 INFO L93 Difference]: Finished difference Result 985 states and 1377 transitions. [2022-03-18 16:08:04,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-03-18 16:08:04,469 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.875) internal successors, (46), 8 states have internal predecessors, (46), 3 states have call successors, (8), 8 states have call predecessors, (8), 3 states have return successors, (6), 4 states have call predecessors, (6), 2 states have call successors, (6) Word has length 60 [2022-03-18 16:08:04,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 16:08:04,473 INFO L225 Difference]: With dead ends: 985 [2022-03-18 16:08:04,473 INFO L226 Difference]: Without dead ends: 933 [2022-03-18 16:08:04,474 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=92, Invalid=414, Unknown=0, NotChecked=0, Total=506 [2022-03-18 16:08:04,474 INFO L912 BasicCegarLoop]: 607 mSDtfsCounter, 968 mSDsluCounter, 1967 mSDsCounter, 0 mSdLazyCounter, 4724 mSolverCounterSat, 393 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 973 SdHoareTripleChecker+Valid, 2574 SdHoareTripleChecker+Invalid, 5117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 393 IncrementalHoareTripleChecker+Valid, 4724 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-03-18 16:08:04,475 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [973 Valid, 2574 Invalid, 5117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [393 Valid, 4724 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-03-18 16:08:04,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 933 states. [2022-03-18 16:08:04,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 933 to 816. [2022-03-18 16:08:04,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 816 states, 643 states have (on average 1.3265940902021773) internal successors, (853), 657 states have internal predecessors, (853), 101 states have call successors, (101), 51 states have call predecessors, (101), 71 states have return successors, (143), 114 states have call predecessors, (143), 94 states have call successors, (143) [2022-03-18 16:08:04,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 816 states to 816 states and 1097 transitions. [2022-03-18 16:08:04,546 INFO L78 Accepts]: Start accepts. Automaton has 816 states and 1097 transitions. Word has length 60 [2022-03-18 16:08:04,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 16:08:04,547 INFO L478 AbstractCegarLoop]: Abstraction has 816 states and 1097 transitions. [2022-03-18 16:08:04,547 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.875) internal successors, (46), 8 states have internal predecessors, (46), 3 states have call successors, (8), 8 states have call predecessors, (8), 3 states have return successors, (6), 4 states have call predecessors, (6), 2 states have call successors, (6) [2022-03-18 16:08:04,547 INFO L276 IsEmpty]: Start isEmpty. Operand 816 states and 1097 transitions. [2022-03-18 16:08:04,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-03-18 16:08:04,548 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 16:08:04,548 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 16:08:04,548 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-03-18 16:08:04,548 INFO L403 AbstractCegarLoop]: === Iteration 35 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 16:08:04,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 16:08:04,549 INFO L85 PathProgramCache]: Analyzing trace with hash -384399656, now seen corresponding path program 1 times [2022-03-18 16:08:04,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 16:08:04,549 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842747232] [2022-03-18 16:08:04,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 16:08:04,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 16:08:04,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:08:04,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 16:08:04,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:08:04,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 16:08:04,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:08:04,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 16:08:04,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:08:04,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-18 16:08:04,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:08:04,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-18 16:08:04,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:08:04,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-18 16:08:04,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:08:04,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-03-18 16:08:04,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:08:04,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 16:08:04,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 16:08:04,771 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842747232] [2022-03-18 16:08:04,771 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [842747232] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 16:08:04,771 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 16:08:04,772 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-18 16:08:04,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966341250] [2022-03-18 16:08:04,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 16:08:04,772 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-18 16:08:04,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 16:08:04,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-18 16:08:04,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2022-03-18 16:08:04,772 INFO L87 Difference]: Start difference. First operand 816 states and 1097 transitions. Second operand has 12 states, 12 states have (on average 3.75) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-03-18 16:08:06,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 16:08:06,889 INFO L93 Difference]: Finished difference Result 981 states and 1378 transitions. [2022-03-18 16:08:06,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-18 16:08:06,889 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.75) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 61 [2022-03-18 16:08:06,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 16:08:06,892 INFO L225 Difference]: With dead ends: 981 [2022-03-18 16:08:06,892 INFO L226 Difference]: Without dead ends: 947 [2022-03-18 16:08:06,892 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2022-03-18 16:08:06,893 INFO L912 BasicCegarLoop]: 589 mSDtfsCounter, 338 mSDsluCounter, 1377 mSDsCounter, 0 mSdLazyCounter, 2863 mSolverCounterSat, 145 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 340 SdHoareTripleChecker+Valid, 1966 SdHoareTripleChecker+Invalid, 3008 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 145 IncrementalHoareTripleChecker+Valid, 2863 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-03-18 16:08:06,893 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [340 Valid, 1966 Invalid, 3008 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [145 Valid, 2863 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-03-18 16:08:06,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 947 states. [2022-03-18 16:08:06,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 947 to 820. [2022-03-18 16:08:06,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 820 states, 645 states have (on average 1.3255813953488371) internal successors, (855), 661 states have internal predecessors, (855), 101 states have call successors, (101), 51 states have call predecessors, (101), 73 states have return successors, (159), 114 states have call predecessors, (159), 94 states have call successors, (159) [2022-03-18 16:08:06,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 820 states to 820 states and 1115 transitions. [2022-03-18 16:08:06,980 INFO L78 Accepts]: Start accepts. Automaton has 820 states and 1115 transitions. Word has length 61 [2022-03-18 16:08:06,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 16:08:06,980 INFO L478 AbstractCegarLoop]: Abstraction has 820 states and 1115 transitions. [2022-03-18 16:08:06,980 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.75) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-03-18 16:08:06,980 INFO L276 IsEmpty]: Start isEmpty. Operand 820 states and 1115 transitions. [2022-03-18 16:08:06,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-03-18 16:08:06,982 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 16:08:06,982 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 16:08:06,982 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-03-18 16:08:06,982 INFO L403 AbstractCegarLoop]: === Iteration 36 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 16:08:06,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 16:08:06,982 INFO L85 PathProgramCache]: Analyzing trace with hash 1213250190, now seen corresponding path program 1 times [2022-03-18 16:08:06,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 16:08:06,983 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015476915] [2022-03-18 16:08:06,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 16:08:06,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 16:08:06,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:08:07,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 16:08:07,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:08:07,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 16:08:07,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:08:07,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 16:08:07,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:08:07,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-18 16:08:07,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:08:07,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-18 16:08:07,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:08:07,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-18 16:08:07,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:08:07,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 16:08:07,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:08:07,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 16:08:07,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 16:08:07,262 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015476915] [2022-03-18 16:08:07,262 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1015476915] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 16:08:07,262 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 16:08:07,263 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-18 16:08:07,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030051730] [2022-03-18 16:08:07,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 16:08:07,263 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-18 16:08:07,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 16:08:07,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-18 16:08:07,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=296, Unknown=0, NotChecked=0, Total=342 [2022-03-18 16:08:07,264 INFO L87 Difference]: Start difference. First operand 820 states and 1115 transitions. Second operand has 19 states, 19 states have (on average 2.4210526315789473) internal successors, (46), 9 states have internal predecessors, (46), 2 states have call successors, (9), 8 states have call predecessors, (9), 5 states have return successors, (7), 5 states have call predecessors, (7), 1 states have call successors, (7) [2022-03-18 16:08:09,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 16:08:09,966 INFO L93 Difference]: Finished difference Result 954 states and 1343 transitions. [2022-03-18 16:08:09,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-03-18 16:08:09,967 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.4210526315789473) internal successors, (46), 9 states have internal predecessors, (46), 2 states have call successors, (9), 8 states have call predecessors, (9), 5 states have return successors, (7), 5 states have call predecessors, (7), 1 states have call successors, (7) Word has length 62 [2022-03-18 16:08:09,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 16:08:09,970 INFO L225 Difference]: With dead ends: 954 [2022-03-18 16:08:09,970 INFO L226 Difference]: Without dead ends: 932 [2022-03-18 16:08:09,970 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=54, Invalid=366, Unknown=0, NotChecked=0, Total=420 [2022-03-18 16:08:09,970 INFO L912 BasicCegarLoop]: 596 mSDtfsCounter, 884 mSDsluCounter, 2546 mSDsCounter, 0 mSdLazyCounter, 5930 mSolverCounterSat, 365 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 886 SdHoareTripleChecker+Valid, 3142 SdHoareTripleChecker+Invalid, 6295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 365 IncrementalHoareTripleChecker+Valid, 5930 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-03-18 16:08:09,971 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [886 Valid, 3142 Invalid, 6295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [365 Valid, 5930 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-03-18 16:08:09,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 932 states. [2022-03-18 16:08:10,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 932 to 815. [2022-03-18 16:08:10,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 815 states, 642 states have (on average 1.3255451713395638) internal successors, (851), 658 states have internal predecessors, (851), 100 states have call successors, (100), 51 states have call predecessors, (100), 72 states have return successors, (157), 112 states have call predecessors, (157), 93 states have call successors, (157) [2022-03-18 16:08:10,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 815 states to 815 states and 1108 transitions. [2022-03-18 16:08:10,054 INFO L78 Accepts]: Start accepts. Automaton has 815 states and 1108 transitions. Word has length 62 [2022-03-18 16:08:10,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 16:08:10,055 INFO L478 AbstractCegarLoop]: Abstraction has 815 states and 1108 transitions. [2022-03-18 16:08:10,055 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.4210526315789473) internal successors, (46), 9 states have internal predecessors, (46), 2 states have call successors, (9), 8 states have call predecessors, (9), 5 states have return successors, (7), 5 states have call predecessors, (7), 1 states have call successors, (7) [2022-03-18 16:08:10,055 INFO L276 IsEmpty]: Start isEmpty. Operand 815 states and 1108 transitions. [2022-03-18 16:08:10,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-03-18 16:08:10,057 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 16:08:10,057 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 16:08:10,057 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-03-18 16:08:10,057 INFO L403 AbstractCegarLoop]: === Iteration 37 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 16:08:10,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 16:08:10,057 INFO L85 PathProgramCache]: Analyzing trace with hash -1649412610, now seen corresponding path program 1 times [2022-03-18 16:08:10,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 16:08:10,058 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805009407] [2022-03-18 16:08:10,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 16:08:10,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 16:08:10,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:08:10,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 16:08:10,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:08:10,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 16:08:10,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:08:10,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 16:08:10,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:08:10,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-18 16:08:10,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:08:10,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-18 16:08:10,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:08:10,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-18 16:08:10,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:08:10,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 16:08:10,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:08:10,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 16:08:10,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:08:10,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 16:08:10,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 16:08:10,396 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805009407] [2022-03-18 16:08:10,396 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [805009407] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 16:08:10,396 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 16:08:10,396 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-18 16:08:10,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521905884] [2022-03-18 16:08:10,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 16:08:10,397 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-18 16:08:10,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 16:08:10,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-18 16:08:10,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=359, Unknown=0, NotChecked=0, Total=420 [2022-03-18 16:08:10,397 INFO L87 Difference]: Start difference. First operand 815 states and 1108 transitions. Second operand has 21 states, 20 states have (on average 2.45) internal successors, (49), 10 states have internal predecessors, (49), 4 states have call successors, (10), 10 states have call predecessors, (10), 4 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) [2022-03-18 16:08:13,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 16:08:13,208 INFO L93 Difference]: Finished difference Result 956 states and 1343 transitions. [2022-03-18 16:08:13,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-03-18 16:08:13,208 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 2.45) internal successors, (49), 10 states have internal predecessors, (49), 4 states have call successors, (10), 10 states have call predecessors, (10), 4 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) Word has length 67 [2022-03-18 16:08:13,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 16:08:13,211 INFO L225 Difference]: With dead ends: 956 [2022-03-18 16:08:13,211 INFO L226 Difference]: Without dead ends: 931 [2022-03-18 16:08:13,211 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=120, Invalid=692, Unknown=0, NotChecked=0, Total=812 [2022-03-18 16:08:13,212 INFO L912 BasicCegarLoop]: 586 mSDtfsCounter, 1801 mSDsluCounter, 2967 mSDsCounter, 0 mSdLazyCounter, 5582 mSolverCounterSat, 741 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1805 SdHoareTripleChecker+Valid, 3553 SdHoareTripleChecker+Invalid, 6323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 741 IncrementalHoareTripleChecker+Valid, 5582 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-03-18 16:08:13,212 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [1805 Valid, 3553 Invalid, 6323 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [741 Valid, 5582 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-03-18 16:08:13,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 931 states. [2022-03-18 16:08:13,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 931 to 813. [2022-03-18 16:08:13,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 813 states, 641 states have (on average 1.3244929797191887) internal successors, (849), 657 states have internal predecessors, (849), 99 states have call successors, (99), 51 states have call predecessors, (99), 72 states have return successors, (156), 111 states have call predecessors, (156), 92 states have call successors, (156) [2022-03-18 16:08:13,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 813 states to 813 states and 1104 transitions. [2022-03-18 16:08:13,284 INFO L78 Accepts]: Start accepts. Automaton has 813 states and 1104 transitions. Word has length 67 [2022-03-18 16:08:13,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 16:08:13,284 INFO L478 AbstractCegarLoop]: Abstraction has 813 states and 1104 transitions. [2022-03-18 16:08:13,285 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 2.45) internal successors, (49), 10 states have internal predecessors, (49), 4 states have call successors, (10), 10 states have call predecessors, (10), 4 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) [2022-03-18 16:08:13,285 INFO L276 IsEmpty]: Start isEmpty. Operand 813 states and 1104 transitions. [2022-03-18 16:08:13,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-03-18 16:08:13,292 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 16:08:13,292 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 16:08:13,292 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-03-18 16:08:13,293 INFO L403 AbstractCegarLoop]: === Iteration 38 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 16:08:13,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 16:08:13,293 INFO L85 PathProgramCache]: Analyzing trace with hash -395524383, now seen corresponding path program 1 times [2022-03-18 16:08:13,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 16:08:13,293 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281865297] [2022-03-18 16:08:13,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 16:08:13,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 16:08:13,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:08:13,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 16:08:13,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:08:13,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 16:08:13,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:08:13,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 16:08:13,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:08:13,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-18 16:08:13,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:08:13,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-18 16:08:13,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:08:13,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-18 16:08:13,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:08:13,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-03-18 16:08:13,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:08:13,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 16:08:13,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:08:13,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 16:08:13,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 16:08:13,634 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281865297] [2022-03-18 16:08:13,634 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [281865297] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 16:08:13,634 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 16:08:13,634 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-18 16:08:13,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909934661] [2022-03-18 16:08:13,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 16:08:13,636 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-18 16:08:13,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 16:08:13,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-18 16:08:13,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=359, Unknown=0, NotChecked=0, Total=420 [2022-03-18 16:08:13,637 INFO L87 Difference]: Start difference. First operand 813 states and 1104 transitions. Second operand has 21 states, 20 states have (on average 2.4) internal successors, (48), 10 states have internal predecessors, (48), 4 states have call successors, (10), 10 states have call predecessors, (10), 4 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) [2022-03-18 16:08:16,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 16:08:16,308 INFO L93 Difference]: Finished difference Result 953 states and 1336 transitions. [2022-03-18 16:08:16,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-03-18 16:08:16,308 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 2.4) internal successors, (48), 10 states have internal predecessors, (48), 4 states have call successors, (10), 10 states have call predecessors, (10), 4 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) Word has length 66 [2022-03-18 16:08:16,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 16:08:16,310 INFO L225 Difference]: With dead ends: 953 [2022-03-18 16:08:16,310 INFO L226 Difference]: Without dead ends: 928 [2022-03-18 16:08:16,311 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=120, Invalid=692, Unknown=0, NotChecked=0, Total=812 [2022-03-18 16:08:16,311 INFO L912 BasicCegarLoop]: 583 mSDtfsCounter, 1256 mSDsluCounter, 2524 mSDsCounter, 0 mSdLazyCounter, 5246 mSolverCounterSat, 497 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1259 SdHoareTripleChecker+Valid, 3107 SdHoareTripleChecker+Invalid, 5743 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 497 IncrementalHoareTripleChecker+Valid, 5246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-03-18 16:08:16,311 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [1259 Valid, 3107 Invalid, 5743 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [497 Valid, 5246 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-03-18 16:08:16,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 928 states. [2022-03-18 16:08:16,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 928 to 811. [2022-03-18 16:08:16,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 811 states, 640 states have (on average 1.3234375) internal successors, (847), 656 states have internal predecessors, (847), 98 states have call successors, (98), 51 states have call predecessors, (98), 72 states have return successors, (155), 110 states have call predecessors, (155), 91 states have call successors, (155) [2022-03-18 16:08:16,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 811 states to 811 states and 1100 transitions. [2022-03-18 16:08:16,380 INFO L78 Accepts]: Start accepts. Automaton has 811 states and 1100 transitions. Word has length 66 [2022-03-18 16:08:16,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 16:08:16,380 INFO L478 AbstractCegarLoop]: Abstraction has 811 states and 1100 transitions. [2022-03-18 16:08:16,380 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 2.4) internal successors, (48), 10 states have internal predecessors, (48), 4 states have call successors, (10), 10 states have call predecessors, (10), 4 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) [2022-03-18 16:08:16,380 INFO L276 IsEmpty]: Start isEmpty. Operand 811 states and 1100 transitions. [2022-03-18 16:08:16,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-03-18 16:08:16,382 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 16:08:16,382 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 16:08:16,382 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-03-18 16:08:16,382 INFO L403 AbstractCegarLoop]: === Iteration 39 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 16:08:16,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 16:08:16,383 INFO L85 PathProgramCache]: Analyzing trace with hash 73194234, now seen corresponding path program 1 times [2022-03-18 16:08:16,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 16:08:16,383 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915299885] [2022-03-18 16:08:16,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 16:08:16,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 16:08:16,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:08:16,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 16:08:16,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:08:16,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 16:08:16,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:08:16,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 16:08:16,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:08:16,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-18 16:08:16,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:08:16,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-18 16:08:16,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:08:16,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-03-18 16:08:16,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:08:16,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 16:08:16,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:08:16,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 16:08:16,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 16:08:16,708 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [915299885] [2022-03-18 16:08:16,708 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [915299885] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 16:08:16,708 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 16:08:16,708 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-18 16:08:16,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437044077] [2022-03-18 16:08:16,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 16:08:16,708 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-18 16:08:16,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 16:08:16,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-18 16:08:16,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=327, Unknown=0, NotChecked=0, Total=380 [2022-03-18 16:08:16,709 INFO L87 Difference]: Start difference. First operand 811 states and 1100 transitions. Second operand has 20 states, 19 states have (on average 2.473684210526316) internal successors, (47), 10 states have internal predecessors, (47), 4 states have call successors, (9), 9 states have call predecessors, (9), 4 states have return successors, (7), 5 states have call predecessors, (7), 3 states have call successors, (7) [2022-03-18 16:08:19,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 16:08:19,925 INFO L93 Difference]: Finished difference Result 948 states and 1327 transitions. [2022-03-18 16:08:19,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-03-18 16:08:19,925 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 2.473684210526316) internal successors, (47), 10 states have internal predecessors, (47), 4 states have call successors, (9), 9 states have call predecessors, (9), 4 states have return successors, (7), 5 states have call predecessors, (7), 3 states have call successors, (7) Word has length 63 [2022-03-18 16:08:19,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 16:08:19,927 INFO L225 Difference]: With dead ends: 948 [2022-03-18 16:08:19,928 INFO L226 Difference]: Without dead ends: 924 [2022-03-18 16:08:19,928 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=99, Invalid=603, Unknown=0, NotChecked=0, Total=702 [2022-03-18 16:08:19,928 INFO L912 BasicCegarLoop]: 560 mSDtfsCounter, 328 mSDsluCounter, 2684 mSDsCounter, 0 mSdLazyCounter, 6162 mSolverCounterSat, 132 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 331 SdHoareTripleChecker+Valid, 3244 SdHoareTripleChecker+Invalid, 6294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 132 IncrementalHoareTripleChecker+Valid, 6162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-03-18 16:08:19,929 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [331 Valid, 3244 Invalid, 6294 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [132 Valid, 6162 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-03-18 16:08:19,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 924 states. [2022-03-18 16:08:20,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 924 to 809. [2022-03-18 16:08:20,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 809 states, 639 states have (on average 1.322378716744914) internal successors, (845), 655 states have internal predecessors, (845), 97 states have call successors, (97), 51 states have call predecessors, (97), 72 states have return successors, (154), 109 states have call predecessors, (154), 90 states have call successors, (154) [2022-03-18 16:08:20,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 809 states to 809 states and 1096 transitions. [2022-03-18 16:08:20,004 INFO L78 Accepts]: Start accepts. Automaton has 809 states and 1096 transitions. Word has length 63 [2022-03-18 16:08:20,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 16:08:20,005 INFO L478 AbstractCegarLoop]: Abstraction has 809 states and 1096 transitions. [2022-03-18 16:08:20,005 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 2.473684210526316) internal successors, (47), 10 states have internal predecessors, (47), 4 states have call successors, (9), 9 states have call predecessors, (9), 4 states have return successors, (7), 5 states have call predecessors, (7), 3 states have call successors, (7) [2022-03-18 16:08:20,005 INFO L276 IsEmpty]: Start isEmpty. Operand 809 states and 1096 transitions. [2022-03-18 16:08:20,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-03-18 16:08:20,007 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 16:08:20,007 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 16:08:20,007 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-03-18 16:08:20,007 INFO L403 AbstractCegarLoop]: === Iteration 40 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 16:08:20,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 16:08:20,008 INFO L85 PathProgramCache]: Analyzing trace with hash -20126443, now seen corresponding path program 1 times [2022-03-18 16:08:20,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 16:08:20,008 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871432322] [2022-03-18 16:08:20,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 16:08:20,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 16:08:20,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:08:20,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 16:08:20,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:08:20,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 16:08:20,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:08:20,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 16:08:20,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:08:20,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-18 16:08:20,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:08:20,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-18 16:08:20,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:08:20,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-18 16:08:20,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:08:20,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-18 16:08:20,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:08:20,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 16:08:20,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 16:08:20,174 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871432322] [2022-03-18 16:08:20,174 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [871432322] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 16:08:20,174 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 16:08:20,174 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-03-18 16:08:20,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588906091] [2022-03-18 16:08:20,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 16:08:20,174 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-18 16:08:20,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 16:08:20,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-18 16:08:20,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-03-18 16:08:20,175 INFO L87 Difference]: Start difference. First operand 809 states and 1096 transitions. Second operand has 10 states, 10 states have (on average 4.7) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (9), 9 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-03-18 16:08:21,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 16:08:21,418 INFO L93 Difference]: Finished difference Result 1141 states and 1563 transitions. [2022-03-18 16:08:21,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-18 16:08:21,418 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.7) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (9), 9 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 63 [2022-03-18 16:08:21,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 16:08:21,420 INFO L225 Difference]: With dead ends: 1141 [2022-03-18 16:08:21,420 INFO L226 Difference]: Without dead ends: 809 [2022-03-18 16:08:21,421 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=44, Invalid=66, Unknown=0, NotChecked=0, Total=110 [2022-03-18 16:08:21,421 INFO L912 BasicCegarLoop]: 518 mSDtfsCounter, 599 mSDsluCounter, 546 mSDsCounter, 0 mSdLazyCounter, 977 mSolverCounterSat, 221 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 601 SdHoareTripleChecker+Valid, 1064 SdHoareTripleChecker+Invalid, 1198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 221 IncrementalHoareTripleChecker+Valid, 977 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-03-18 16:08:21,421 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [601 Valid, 1064 Invalid, 1198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [221 Valid, 977 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-03-18 16:08:21,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 809 states. [2022-03-18 16:08:21,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 809 to 701. [2022-03-18 16:08:21,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 701 states, 554 states have (on average 1.3086642599277978) internal successors, (725), 570 states have internal predecessors, (725), 84 states have call successors, (84), 45 states have call predecessors, (84), 62 states have return successors, (108), 92 states have call predecessors, (108), 77 states have call successors, (108) [2022-03-18 16:08:21,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 701 states to 701 states and 917 transitions. [2022-03-18 16:08:21,483 INFO L78 Accepts]: Start accepts. Automaton has 701 states and 917 transitions. Word has length 63 [2022-03-18 16:08:21,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 16:08:21,483 INFO L478 AbstractCegarLoop]: Abstraction has 701 states and 917 transitions. [2022-03-18 16:08:21,483 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.7) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (9), 9 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-03-18 16:08:21,483 INFO L276 IsEmpty]: Start isEmpty. Operand 701 states and 917 transitions. [2022-03-18 16:08:21,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-03-18 16:08:21,485 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 16:08:21,485 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 16:08:21,485 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-03-18 16:08:21,485 INFO L403 AbstractCegarLoop]: === Iteration 41 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 16:08:21,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 16:08:21,485 INFO L85 PathProgramCache]: Analyzing trace with hash -1748590526, now seen corresponding path program 1 times [2022-03-18 16:08:21,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 16:08:21,486 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954061146] [2022-03-18 16:08:21,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 16:08:21,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 16:08:21,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:08:21,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 16:08:21,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:08:21,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 16:08:21,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:08:21,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 16:08:21,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:08:21,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-18 16:08:21,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:08:21,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 16:08:21,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:08:21,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-18 16:08:21,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:08:21,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 16:08:21,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:08:21,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 16:08:21,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 16:08:21,906 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954061146] [2022-03-18 16:08:21,906 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1954061146] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 16:08:21,906 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 16:08:21,906 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-18 16:08:21,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964843979] [2022-03-18 16:08:21,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 16:08:21,907 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-18 16:08:21,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 16:08:21,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-18 16:08:21,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=296, Unknown=0, NotChecked=0, Total=342 [2022-03-18 16:08:21,908 INFO L87 Difference]: Start difference. First operand 701 states and 917 transitions. Second operand has 19 states, 19 states have (on average 2.9473684210526314) internal successors, (56), 9 states have internal predecessors, (56), 2 states have call successors, (9), 8 states have call predecessors, (9), 5 states have return successors, (7), 5 states have call predecessors, (7), 1 states have call successors, (7) [2022-03-18 16:08:24,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 16:08:24,233 INFO L93 Difference]: Finished difference Result 780 states and 1030 transitions. [2022-03-18 16:08:24,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-03-18 16:08:24,234 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.9473684210526314) internal successors, (56), 9 states have internal predecessors, (56), 2 states have call successors, (9), 8 states have call predecessors, (9), 5 states have return successors, (7), 5 states have call predecessors, (7), 1 states have call successors, (7) Word has length 72 [2022-03-18 16:08:24,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 16:08:24,235 INFO L225 Difference]: With dead ends: 780 [2022-03-18 16:08:24,235 INFO L226 Difference]: Without dead ends: 758 [2022-03-18 16:08:24,236 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=54, Invalid=366, Unknown=0, NotChecked=0, Total=420 [2022-03-18 16:08:24,236 INFO L912 BasicCegarLoop]: 526 mSDtfsCounter, 846 mSDsluCounter, 1977 mSDsCounter, 0 mSdLazyCounter, 4845 mSolverCounterSat, 318 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 848 SdHoareTripleChecker+Valid, 2503 SdHoareTripleChecker+Invalid, 5163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 318 IncrementalHoareTripleChecker+Valid, 4845 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-03-18 16:08:24,236 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [848 Valid, 2503 Invalid, 5163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [318 Valid, 4845 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-03-18 16:08:24,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 758 states. [2022-03-18 16:08:24,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 758 to 699. [2022-03-18 16:08:24,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 699 states, 553 states have (on average 1.3074141048824592) internal successors, (723), 569 states have internal predecessors, (723), 83 states have call successors, (83), 45 states have call predecessors, (83), 62 states have return successors, (107), 91 states have call predecessors, (107), 76 states have call successors, (107) [2022-03-18 16:08:24,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 699 states to 699 states and 913 transitions. [2022-03-18 16:08:24,305 INFO L78 Accepts]: Start accepts. Automaton has 699 states and 913 transitions. Word has length 72 [2022-03-18 16:08:24,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 16:08:24,306 INFO L478 AbstractCegarLoop]: Abstraction has 699 states and 913 transitions. [2022-03-18 16:08:24,306 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.9473684210526314) internal successors, (56), 9 states have internal predecessors, (56), 2 states have call successors, (9), 8 states have call predecessors, (9), 5 states have return successors, (7), 5 states have call predecessors, (7), 1 states have call successors, (7) [2022-03-18 16:08:24,306 INFO L276 IsEmpty]: Start isEmpty. Operand 699 states and 913 transitions. [2022-03-18 16:08:24,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-03-18 16:08:24,307 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 16:08:24,308 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 16:08:24,308 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2022-03-18 16:08:24,308 INFO L403 AbstractCegarLoop]: === Iteration 42 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 16:08:24,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 16:08:24,308 INFO L85 PathProgramCache]: Analyzing trace with hash -1016702716, now seen corresponding path program 1 times [2022-03-18 16:08:24,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 16:08:24,308 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1878974762] [2022-03-18 16:08:24,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 16:08:24,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 16:08:24,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:08:24,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 16:08:24,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:08:24,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 16:08:24,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:08:24,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 16:08:24,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:08:24,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-18 16:08:24,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:08:24,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-18 16:08:24,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:08:24,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-03-18 16:08:24,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:08:24,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 16:08:24,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:08:24,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 16:08:24,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 16:08:24,670 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1878974762] [2022-03-18 16:08:24,670 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1878974762] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 16:08:24,671 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 16:08:24,671 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-18 16:08:24,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139359536] [2022-03-18 16:08:24,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 16:08:24,671 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-18 16:08:24,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 16:08:24,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-18 16:08:24,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=296, Unknown=0, NotChecked=0, Total=342 [2022-03-18 16:08:24,672 INFO L87 Difference]: Start difference. First operand 699 states and 913 transitions. Second operand has 19 states, 19 states have (on average 2.789473684210526) internal successors, (53), 9 states have internal predecessors, (53), 2 states have call successors, (9), 8 states have call predecessors, (9), 5 states have return successors, (7), 5 states have call predecessors, (7), 1 states have call successors, (7) [2022-03-18 16:08:27,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 16:08:27,211 INFO L93 Difference]: Finished difference Result 775 states and 1023 transitions. [2022-03-18 16:08:27,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-03-18 16:08:27,211 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.789473684210526) internal successors, (53), 9 states have internal predecessors, (53), 2 states have call successors, (9), 8 states have call predecessors, (9), 5 states have return successors, (7), 5 states have call predecessors, (7), 1 states have call successors, (7) Word has length 69 [2022-03-18 16:08:27,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 16:08:27,213 INFO L225 Difference]: With dead ends: 775 [2022-03-18 16:08:27,213 INFO L226 Difference]: Without dead ends: 745 [2022-03-18 16:08:27,213 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=54, Invalid=366, Unknown=0, NotChecked=0, Total=420 [2022-03-18 16:08:27,214 INFO L912 BasicCegarLoop]: 519 mSDtfsCounter, 1109 mSDsluCounter, 1970 mSDsCounter, 0 mSdLazyCounter, 5059 mSolverCounterSat, 417 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1111 SdHoareTripleChecker+Valid, 2489 SdHoareTripleChecker+Invalid, 5476 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 417 IncrementalHoareTripleChecker+Valid, 5059 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-03-18 16:08:27,214 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [1111 Valid, 2489 Invalid, 5476 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [417 Valid, 5059 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-03-18 16:08:27,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 745 states. [2022-03-18 16:08:27,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 745 to 688. [2022-03-18 16:08:27,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 688 states, 545 states have (on average 1.308256880733945) internal successors, (713), 561 states have internal predecessors, (713), 81 states have call successors, (81), 45 states have call predecessors, (81), 61 states have return successors, (104), 88 states have call predecessors, (104), 74 states have call successors, (104) [2022-03-18 16:08:27,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 688 states to 688 states and 898 transitions. [2022-03-18 16:08:27,274 INFO L78 Accepts]: Start accepts. Automaton has 688 states and 898 transitions. Word has length 69 [2022-03-18 16:08:27,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 16:08:27,275 INFO L478 AbstractCegarLoop]: Abstraction has 688 states and 898 transitions. [2022-03-18 16:08:27,275 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.789473684210526) internal successors, (53), 9 states have internal predecessors, (53), 2 states have call successors, (9), 8 states have call predecessors, (9), 5 states have return successors, (7), 5 states have call predecessors, (7), 1 states have call successors, (7) [2022-03-18 16:08:27,275 INFO L276 IsEmpty]: Start isEmpty. Operand 688 states and 898 transitions. [2022-03-18 16:08:27,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-03-18 16:08:27,276 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 16:08:27,277 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 16:08:27,277 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2022-03-18 16:08:27,277 INFO L403 AbstractCegarLoop]: === Iteration 43 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 16:08:27,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 16:08:27,277 INFO L85 PathProgramCache]: Analyzing trace with hash -1125022054, now seen corresponding path program 1 times [2022-03-18 16:08:27,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 16:08:27,277 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772986403] [2022-03-18 16:08:27,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 16:08:27,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 16:08:27,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:08:27,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 16:08:27,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:08:27,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 16:08:27,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:08:27,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 16:08:27,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:08:27,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-18 16:08:27,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:08:27,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-03-18 16:08:27,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:08:27,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-18 16:08:27,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:08:27,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 16:08:27,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:08:27,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 16:08:27,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 16:08:27,566 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772986403] [2022-03-18 16:08:27,566 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1772986403] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 16:08:27,567 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 16:08:27,567 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-18 16:08:27,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078973069] [2022-03-18 16:08:27,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 16:08:27,567 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-18 16:08:27,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 16:08:27,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-18 16:08:27,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=296, Unknown=0, NotChecked=0, Total=342 [2022-03-18 16:08:27,568 INFO L87 Difference]: Start difference. First operand 688 states and 898 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 9 states have internal predecessors, (47), 2 states have call successors, (9), 8 states have call predecessors, (9), 5 states have return successors, (7), 5 states have call predecessors, (7), 1 states have call successors, (7) [2022-03-18 16:08:29,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 16:08:29,946 INFO L93 Difference]: Finished difference Result 762 states and 1004 transitions. [2022-03-18 16:08:29,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-03-18 16:08:29,947 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 9 states have internal predecessors, (47), 2 states have call successors, (9), 8 states have call predecessors, (9), 5 states have return successors, (7), 5 states have call predecessors, (7), 1 states have call successors, (7) Word has length 63 [2022-03-18 16:08:29,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 16:08:29,949 INFO L225 Difference]: With dead ends: 762 [2022-03-18 16:08:29,949 INFO L226 Difference]: Without dead ends: 740 [2022-03-18 16:08:29,949 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=61, Invalid=401, Unknown=0, NotChecked=0, Total=462 [2022-03-18 16:08:29,950 INFO L912 BasicCegarLoop]: 504 mSDtfsCounter, 290 mSDsluCounter, 1982 mSDsCounter, 0 mSdLazyCounter, 5145 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 292 SdHoareTripleChecker+Valid, 2486 SdHoareTripleChecker+Invalid, 5250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 5145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-03-18 16:08:29,950 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [292 Valid, 2486 Invalid, 5250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 5145 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-03-18 16:08:29,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 740 states. [2022-03-18 16:08:30,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 740 to 683. [2022-03-18 16:08:30,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 683 states, 542 states have (on average 1.3081180811808117) internal successors, (709), 558 states have internal predecessors, (709), 80 states have call successors, (80), 45 states have call predecessors, (80), 60 states have return successors, (102), 86 states have call predecessors, (102), 73 states have call successors, (102) [2022-03-18 16:08:30,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 683 states to 683 states and 891 transitions. [2022-03-18 16:08:30,021 INFO L78 Accepts]: Start accepts. Automaton has 683 states and 891 transitions. Word has length 63 [2022-03-18 16:08:30,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 16:08:30,021 INFO L478 AbstractCegarLoop]: Abstraction has 683 states and 891 transitions. [2022-03-18 16:08:30,022 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 9 states have internal predecessors, (47), 2 states have call successors, (9), 8 states have call predecessors, (9), 5 states have return successors, (7), 5 states have call predecessors, (7), 1 states have call successors, (7) [2022-03-18 16:08:30,022 INFO L276 IsEmpty]: Start isEmpty. Operand 683 states and 891 transitions. [2022-03-18 16:08:30,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-03-18 16:08:30,023 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 16:08:30,023 INFO L500 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 16:08:30,023 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2022-03-18 16:08:30,024 INFO L403 AbstractCegarLoop]: === Iteration 44 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 16:08:30,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 16:08:30,024 INFO L85 PathProgramCache]: Analyzing trace with hash 1222738042, now seen corresponding path program 1 times [2022-03-18 16:08:30,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 16:08:30,024 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053729964] [2022-03-18 16:08:30,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 16:08:30,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 16:08:30,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:08:30,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 16:08:30,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:08:30,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 16:08:30,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:08:30,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 16:08:30,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:08:30,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-03-18 16:08:30,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:08:30,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-03-18 16:08:30,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:08:30,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-18 16:08:30,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:08:30,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 16:08:30,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:08:30,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-18 16:08:30,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:08:30,184 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 16:08:30,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 16:08:30,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053729964] [2022-03-18 16:08:30,185 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1053729964] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 16:08:30,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [600592692] [2022-03-18 16:08:30,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 16:08:30,185 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 16:08:30,185 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 16:08:30,192 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 16:08:30,193 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-03-18 16:08:30,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:08:30,357 INFO L263 TraceCheckSpWp]: Trace formula consists of 852 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-18 16:08:30,360 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 16:08:30,482 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 16:08:30,482 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-18 16:08:30,483 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [600592692] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 16:08:30,483 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-18 16:08:30,483 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 10 [2022-03-18 16:08:30,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165271659] [2022-03-18 16:08:30,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 16:08:30,483 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-18 16:08:30,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 16:08:30,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-18 16:08:30,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2022-03-18 16:08:30,484 INFO L87 Difference]: Start difference. First operand 683 states and 891 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 3 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-03-18 16:08:30,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 16:08:30,551 INFO L93 Difference]: Finished difference Result 892 states and 1159 transitions. [2022-03-18 16:08:30,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-18 16:08:30,552 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 3 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 80 [2022-03-18 16:08:30,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 16:08:30,554 INFO L225 Difference]: With dead ends: 892 [2022-03-18 16:08:30,554 INFO L226 Difference]: Without dead ends: 755 [2022-03-18 16:08:30,554 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 90 SyntacticMatches, 3 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2022-03-18 16:08:30,555 INFO L912 BasicCegarLoop]: 582 mSDtfsCounter, 114 mSDsluCounter, 492 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 1074 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-18 16:08:30,555 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [114 Valid, 1074 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-18 16:08:30,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 755 states. [2022-03-18 16:08:30,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 755 to 724. [2022-03-18 16:08:30,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 724 states, 575 states have (on average 1.3043478260869565) internal successors, (750), 591 states have internal predecessors, (750), 82 states have call successors, (82), 48 states have call predecessors, (82), 66 states have return successors, (110), 91 states have call predecessors, (110), 76 states have call successors, (110) [2022-03-18 16:08:30,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 724 states to 724 states and 942 transitions. [2022-03-18 16:08:30,621 INFO L78 Accepts]: Start accepts. Automaton has 724 states and 942 transitions. Word has length 80 [2022-03-18 16:08:30,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 16:08:30,621 INFO L478 AbstractCegarLoop]: Abstraction has 724 states and 942 transitions. [2022-03-18 16:08:30,621 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 3 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-03-18 16:08:30,621 INFO L276 IsEmpty]: Start isEmpty. Operand 724 states and 942 transitions. [2022-03-18 16:08:30,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-03-18 16:08:30,623 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 16:08:30,623 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 16:08:30,651 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-03-18 16:08:30,847 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2022-03-18 16:08:30,848 INFO L403 AbstractCegarLoop]: === Iteration 45 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 16:08:30,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 16:08:30,848 INFO L85 PathProgramCache]: Analyzing trace with hash 505400329, now seen corresponding path program 1 times [2022-03-18 16:08:30,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 16:08:30,848 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222045927] [2022-03-18 16:08:30,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 16:08:30,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 16:08:30,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:08:30,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 16:08:30,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:08:30,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 16:08:30,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:08:30,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 16:08:30,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:08:30,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-03-18 16:08:30,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:08:30,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 16:08:30,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:08:30,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-18 16:08:30,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:08:30,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-18 16:08:30,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:08:30,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 16:08:30,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:08:30,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 16:08:30,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 16:08:30,997 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1222045927] [2022-03-18 16:08:30,997 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1222045927] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 16:08:30,998 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 16:08:30,998 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-03-18 16:08:30,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385425758] [2022-03-18 16:08:30,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 16:08:30,998 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-18 16:08:30,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 16:08:30,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-18 16:08:30,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-03-18 16:08:30,999 INFO L87 Difference]: Start difference. First operand 724 states and 942 transitions. Second operand has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (12), 8 states have call predecessors, (12), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2022-03-18 16:08:32,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 16:08:32,124 INFO L93 Difference]: Finished difference Result 911 states and 1203 transitions. [2022-03-18 16:08:32,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-18 16:08:32,124 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (12), 8 states have call predecessors, (12), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) Word has length 66 [2022-03-18 16:08:32,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 16:08:32,126 INFO L225 Difference]: With dead ends: 911 [2022-03-18 16:08:32,126 INFO L226 Difference]: Without dead ends: 781 [2022-03-18 16:08:32,127 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2022-03-18 16:08:32,127 INFO L912 BasicCegarLoop]: 466 mSDtfsCounter, 394 mSDsluCounter, 437 mSDsCounter, 0 mSdLazyCounter, 1141 mSolverCounterSat, 134 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 404 SdHoareTripleChecker+Valid, 903 SdHoareTripleChecker+Invalid, 1275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 134 IncrementalHoareTripleChecker+Valid, 1141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-03-18 16:08:32,127 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [404 Valid, 903 Invalid, 1275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [134 Valid, 1141 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-03-18 16:08:32,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 781 states. [2022-03-18 16:08:32,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 781 to 724. [2022-03-18 16:08:32,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 724 states, 575 states have (on average 1.2991304347826087) internal successors, (747), 591 states have internal predecessors, (747), 82 states have call successors, (82), 48 states have call predecessors, (82), 66 states have return successors, (110), 91 states have call predecessors, (110), 76 states have call successors, (110) [2022-03-18 16:08:32,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 724 states to 724 states and 939 transitions. [2022-03-18 16:08:32,222 INFO L78 Accepts]: Start accepts. Automaton has 724 states and 939 transitions. Word has length 66 [2022-03-18 16:08:32,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 16:08:32,222 INFO L478 AbstractCegarLoop]: Abstraction has 724 states and 939 transitions. [2022-03-18 16:08:32,222 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (12), 8 states have call predecessors, (12), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2022-03-18 16:08:32,222 INFO L276 IsEmpty]: Start isEmpty. Operand 724 states and 939 transitions. [2022-03-18 16:08:32,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-03-18 16:08:32,224 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 16:08:32,224 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 16:08:32,224 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2022-03-18 16:08:32,224 INFO L403 AbstractCegarLoop]: === Iteration 46 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 16:08:32,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 16:08:32,224 INFO L85 PathProgramCache]: Analyzing trace with hash -1348887076, now seen corresponding path program 1 times [2022-03-18 16:08:32,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 16:08:32,224 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261201560] [2022-03-18 16:08:32,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 16:08:32,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 16:08:32,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:08:32,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 16:08:32,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:08:32,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 16:08:32,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:08:32,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 16:08:32,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:08:32,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-18 16:08:32,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:08:32,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 16:08:32,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:08:32,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-18 16:08:32,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:08:32,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-18 16:08:32,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:08:32,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 16:08:32,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 16:08:32,423 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261201560] [2022-03-18 16:08:32,423 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1261201560] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 16:08:32,423 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 16:08:32,423 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-18 16:08:32,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221133694] [2022-03-18 16:08:32,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 16:08:32,424 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-18 16:08:32,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 16:08:32,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-18 16:08:32,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2022-03-18 16:08:32,425 INFO L87 Difference]: Start difference. First operand 724 states and 939 transitions. Second operand has 12 states, 12 states have (on average 4.083333333333333) internal successors, (49), 5 states have internal predecessors, (49), 3 states have call successors, (9), 9 states have call predecessors, (9), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-03-18 16:08:34,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 16:08:34,292 INFO L93 Difference]: Finished difference Result 845 states and 1103 transitions. [2022-03-18 16:08:34,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-03-18 16:08:34,292 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.083333333333333) internal successors, (49), 5 states have internal predecessors, (49), 3 states have call successors, (9), 9 states have call predecessors, (9), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 65 [2022-03-18 16:08:34,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 16:08:34,294 INFO L225 Difference]: With dead ends: 845 [2022-03-18 16:08:34,294 INFO L226 Difference]: Without dead ends: 812 [2022-03-18 16:08:34,294 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=138, Invalid=282, Unknown=0, NotChecked=0, Total=420 [2022-03-18 16:08:34,295 INFO L912 BasicCegarLoop]: 484 mSDtfsCounter, 990 mSDsluCounter, 918 mSDsCounter, 0 mSdLazyCounter, 2100 mSolverCounterSat, 338 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 993 SdHoareTripleChecker+Valid, 1402 SdHoareTripleChecker+Invalid, 2438 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 338 IncrementalHoareTripleChecker+Valid, 2100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-03-18 16:08:34,295 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [993 Valid, 1402 Invalid, 2438 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [338 Valid, 2100 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-03-18 16:08:34,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 812 states. [2022-03-18 16:08:34,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 812 to 730. [2022-03-18 16:08:34,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 730 states, 580 states have (on average 1.2982758620689656) internal successors, (753), 596 states have internal predecessors, (753), 83 states have call successors, (83), 48 states have call predecessors, (83), 66 states have return successors, (111), 92 states have call predecessors, (111), 77 states have call successors, (111) [2022-03-18 16:08:34,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 730 states to 730 states and 947 transitions. [2022-03-18 16:08:34,360 INFO L78 Accepts]: Start accepts. Automaton has 730 states and 947 transitions. Word has length 65 [2022-03-18 16:08:34,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 16:08:34,360 INFO L478 AbstractCegarLoop]: Abstraction has 730 states and 947 transitions. [2022-03-18 16:08:34,360 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.083333333333333) internal successors, (49), 5 states have internal predecessors, (49), 3 states have call successors, (9), 9 states have call predecessors, (9), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-03-18 16:08:34,360 INFO L276 IsEmpty]: Start isEmpty. Operand 730 states and 947 transitions. [2022-03-18 16:08:34,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-03-18 16:08:34,361 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 16:08:34,361 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 16:08:34,361 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2022-03-18 16:08:34,361 INFO L403 AbstractCegarLoop]: === Iteration 47 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 16:08:34,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 16:08:34,361 INFO L85 PathProgramCache]: Analyzing trace with hash 257334910, now seen corresponding path program 1 times [2022-03-18 16:08:34,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 16:08:34,361 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764659277] [2022-03-18 16:08:34,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 16:08:34,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 16:08:34,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:08:34,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 16:08:34,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:08:34,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 16:08:34,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:08:34,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 16:08:34,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:08:34,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-18 16:08:34,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:08:34,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 16:08:34,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:08:34,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-03-18 16:08:34,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:08:34,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-03-18 16:08:34,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:08:34,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 16:08:34,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 16:08:34,543 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [764659277] [2022-03-18 16:08:34,543 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [764659277] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 16:08:34,543 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 16:08:34,543 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-18 16:08:34,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599388874] [2022-03-18 16:08:34,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 16:08:34,544 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-18 16:08:34,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 16:08:34,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-18 16:08:34,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2022-03-18 16:08:34,544 INFO L87 Difference]: Start difference. First operand 730 states and 947 transitions. Second operand has 12 states, 12 states have (on average 4.166666666666667) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-03-18 16:08:35,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 16:08:35,811 INFO L93 Difference]: Finished difference Result 843 states and 1096 transitions. [2022-03-18 16:08:35,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-18 16:08:35,811 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.166666666666667) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 66 [2022-03-18 16:08:35,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 16:08:35,813 INFO L225 Difference]: With dead ends: 843 [2022-03-18 16:08:35,813 INFO L226 Difference]: Without dead ends: 789 [2022-03-18 16:08:35,813 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=76, Invalid=164, Unknown=0, NotChecked=0, Total=240 [2022-03-18 16:08:35,814 INFO L912 BasicCegarLoop]: 489 mSDtfsCounter, 856 mSDsluCounter, 682 mSDsCounter, 0 mSdLazyCounter, 1612 mSolverCounterSat, 313 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 858 SdHoareTripleChecker+Valid, 1171 SdHoareTripleChecker+Invalid, 1925 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 313 IncrementalHoareTripleChecker+Valid, 1612 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-03-18 16:08:35,816 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [858 Valid, 1171 Invalid, 1925 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [313 Valid, 1612 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-03-18 16:08:35,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 789 states. [2022-03-18 16:08:35,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 789 to 730. [2022-03-18 16:08:35,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 730 states, 580 states have (on average 1.2948275862068965) internal successors, (751), 596 states have internal predecessors, (751), 83 states have call successors, (83), 48 states have call predecessors, (83), 66 states have return successors, (111), 92 states have call predecessors, (111), 77 states have call successors, (111) [2022-03-18 16:08:35,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 730 states to 730 states and 945 transitions. [2022-03-18 16:08:35,881 INFO L78 Accepts]: Start accepts. Automaton has 730 states and 945 transitions. Word has length 66 [2022-03-18 16:08:35,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 16:08:35,882 INFO L478 AbstractCegarLoop]: Abstraction has 730 states and 945 transitions. [2022-03-18 16:08:35,882 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.166666666666667) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-03-18 16:08:35,882 INFO L276 IsEmpty]: Start isEmpty. Operand 730 states and 945 transitions. [2022-03-18 16:08:35,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-03-18 16:08:35,883 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 16:08:35,883 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 16:08:35,883 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2022-03-18 16:08:35,883 INFO L403 AbstractCegarLoop]: === Iteration 48 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 16:08:35,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 16:08:35,883 INFO L85 PathProgramCache]: Analyzing trace with hash 958934784, now seen corresponding path program 1 times [2022-03-18 16:08:35,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 16:08:35,883 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157604417] [2022-03-18 16:08:35,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 16:08:35,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 16:08:35,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:08:35,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 16:08:35,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:08:35,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 16:08:35,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:08:35,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 16:08:35,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:08:36,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-18 16:08:36,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:08:36,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 16:08:36,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:08:36,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-03-18 16:08:36,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:08:36,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-03-18 16:08:36,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:08:36,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 16:08:36,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 16:08:36,122 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157604417] [2022-03-18 16:08:36,123 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1157604417] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 16:08:36,123 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 16:08:36,123 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-03-18 16:08:36,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971671163] [2022-03-18 16:08:36,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 16:08:36,123 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-03-18 16:08:36,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 16:08:36,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-03-18 16:08:36,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2022-03-18 16:08:36,124 INFO L87 Difference]: Start difference. First operand 730 states and 945 transitions. Second operand has 16 states, 16 states have (on average 3.125) internal successors, (50), 7 states have internal predecessors, (50), 3 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 4 states have call predecessors, (7), 2 states have call successors, (7) [2022-03-18 16:08:38,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 16:08:38,083 INFO L93 Difference]: Finished difference Result 814 states and 1063 transitions. [2022-03-18 16:08:38,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-03-18 16:08:38,083 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.125) internal successors, (50), 7 states have internal predecessors, (50), 3 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 4 states have call predecessors, (7), 2 states have call successors, (7) Word has length 66 [2022-03-18 16:08:38,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 16:08:38,085 INFO L225 Difference]: With dead ends: 814 [2022-03-18 16:08:38,085 INFO L226 Difference]: Without dead ends: 737 [2022-03-18 16:08:38,085 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2022-03-18 16:08:38,085 INFO L912 BasicCegarLoop]: 495 mSDtfsCounter, 898 mSDsluCounter, 1408 mSDsCounter, 0 mSdLazyCounter, 3503 mSolverCounterSat, 332 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 903 SdHoareTripleChecker+Valid, 1903 SdHoareTripleChecker+Invalid, 3835 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 332 IncrementalHoareTripleChecker+Valid, 3503 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-03-18 16:08:38,086 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [903 Valid, 1903 Invalid, 3835 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [332 Valid, 3503 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-03-18 16:08:38,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 737 states. [2022-03-18 16:08:38,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 737 to 693. [2022-03-18 16:08:38,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 693 states, 550 states have (on average 1.2818181818181817) internal successors, (705), 566 states have internal predecessors, (705), 76 states have call successors, (76), 48 states have call predecessors, (76), 66 states have return successors, (103), 85 states have call predecessors, (103), 70 states have call successors, (103) [2022-03-18 16:08:38,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 693 states to 693 states and 884 transitions. [2022-03-18 16:08:38,154 INFO L78 Accepts]: Start accepts. Automaton has 693 states and 884 transitions. Word has length 66 [2022-03-18 16:08:38,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 16:08:38,154 INFO L478 AbstractCegarLoop]: Abstraction has 693 states and 884 transitions. [2022-03-18 16:08:38,154 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.125) internal successors, (50), 7 states have internal predecessors, (50), 3 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 4 states have call predecessors, (7), 2 states have call successors, (7) [2022-03-18 16:08:38,154 INFO L276 IsEmpty]: Start isEmpty. Operand 693 states and 884 transitions. [2022-03-18 16:08:38,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-03-18 16:08:38,155 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 16:08:38,155 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 16:08:38,155 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2022-03-18 16:08:38,155 INFO L403 AbstractCegarLoop]: === Iteration 49 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 16:08:38,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 16:08:38,156 INFO L85 PathProgramCache]: Analyzing trace with hash -896433839, now seen corresponding path program 1 times [2022-03-18 16:08:38,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 16:08:38,156 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408077628] [2022-03-18 16:08:38,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 16:08:38,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 16:08:38,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:08:38,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 16:08:38,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:08:38,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 16:08:38,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:08:38,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 16:08:38,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:08:38,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-18 16:08:38,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:08:38,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 16:08:38,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:08:38,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-03-18 16:08:38,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:08:38,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-18 16:08:38,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:08:38,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 16:08:38,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 16:08:38,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [408077628] [2022-03-18 16:08:38,336 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [408077628] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 16:08:38,336 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 16:08:38,336 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-18 16:08:38,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475509944] [2022-03-18 16:08:38,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 16:08:38,337 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-18 16:08:38,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 16:08:38,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-18 16:08:38,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2022-03-18 16:08:38,337 INFO L87 Difference]: Start difference. First operand 693 states and 884 transitions. Second operand has 12 states, 12 states have (on average 4.25) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-03-18 16:08:39,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 16:08:39,532 INFO L93 Difference]: Finished difference Result 765 states and 977 transitions. [2022-03-18 16:08:39,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-18 16:08:39,532 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.25) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 67 [2022-03-18 16:08:39,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 16:08:39,534 INFO L225 Difference]: With dead ends: 765 [2022-03-18 16:08:39,534 INFO L226 Difference]: Without dead ends: 726 [2022-03-18 16:08:39,534 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2022-03-18 16:08:39,535 INFO L912 BasicCegarLoop]: 436 mSDtfsCounter, 492 mSDsluCounter, 862 mSDsCounter, 0 mSdLazyCounter, 1574 mSolverCounterSat, 182 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 494 SdHoareTripleChecker+Valid, 1298 SdHoareTripleChecker+Invalid, 1756 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 182 IncrementalHoareTripleChecker+Valid, 1574 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-03-18 16:08:39,535 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [494 Valid, 1298 Invalid, 1756 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [182 Valid, 1574 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-03-18 16:08:39,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 726 states. [2022-03-18 16:08:39,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 726 to 688. [2022-03-18 16:08:39,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 688 states, 546 states have (on average 1.2820512820512822) internal successors, (700), 562 states have internal predecessors, (700), 75 states have call successors, (75), 48 states have call predecessors, (75), 66 states have return successors, (102), 84 states have call predecessors, (102), 69 states have call successors, (102) [2022-03-18 16:08:39,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 688 states to 688 states and 877 transitions. [2022-03-18 16:08:39,620 INFO L78 Accepts]: Start accepts. Automaton has 688 states and 877 transitions. Word has length 67 [2022-03-18 16:08:39,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 16:08:39,620 INFO L478 AbstractCegarLoop]: Abstraction has 688 states and 877 transitions. [2022-03-18 16:08:39,620 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.25) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-03-18 16:08:39,621 INFO L276 IsEmpty]: Start isEmpty. Operand 688 states and 877 transitions. [2022-03-18 16:08:39,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-03-18 16:08:39,622 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 16:08:39,622 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 16:08:39,622 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2022-03-18 16:08:39,622 INFO L403 AbstractCegarLoop]: === Iteration 50 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 16:08:39,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 16:08:39,623 INFO L85 PathProgramCache]: Analyzing trace with hash 1676375305, now seen corresponding path program 1 times [2022-03-18 16:08:39,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 16:08:39,623 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718894984] [2022-03-18 16:08:39,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 16:08:39,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 16:08:39,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:08:39,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 16:08:39,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:08:39,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 16:08:39,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:08:39,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 16:08:39,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:08:39,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-18 16:08:39,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:08:39,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-03-18 16:08:39,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:08:39,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-03-18 16:08:39,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:08:39,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 16:08:39,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:08:39,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 16:08:39,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 16:08:39,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718894984] [2022-03-18 16:08:39,816 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1718894984] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 16:08:39,817 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 16:08:39,817 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-03-18 16:08:39,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985259735] [2022-03-18 16:08:39,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 16:08:39,818 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-18 16:08:39,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 16:08:39,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-18 16:08:39,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-03-18 16:08:39,818 INFO L87 Difference]: Start difference. First operand 688 states and 877 transitions. Second operand has 10 states, 10 states have (on average 5.1) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (9), 9 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2022-03-18 16:08:41,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 16:08:41,009 INFO L93 Difference]: Finished difference Result 844 states and 1083 transitions. [2022-03-18 16:08:41,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-18 16:08:41,009 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.1) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (9), 9 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) Word has length 67 [2022-03-18 16:08:41,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 16:08:41,011 INFO L225 Difference]: With dead ends: 844 [2022-03-18 16:08:41,012 INFO L226 Difference]: Without dead ends: 832 [2022-03-18 16:08:41,012 INFO L911 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 [2022-03-18 16:08:41,012 INFO L912 BasicCegarLoop]: 456 mSDtfsCounter, 924 mSDsluCounter, 495 mSDsCounter, 0 mSdLazyCounter, 1315 mSolverCounterSat, 332 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 938 SdHoareTripleChecker+Valid, 951 SdHoareTripleChecker+Invalid, 1647 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 332 IncrementalHoareTripleChecker+Valid, 1315 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-03-18 16:08:41,013 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [938 Valid, 951 Invalid, 1647 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [332 Valid, 1315 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-03-18 16:08:41,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 832 states. [2022-03-18 16:08:41,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 832 to 734. [2022-03-18 16:08:41,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 734 states, 582 states have (on average 1.274914089347079) internal successors, (742), 600 states have internal predecessors, (742), 77 states have call successors, (77), 50 states have call predecessors, (77), 74 states have return successors, (110), 92 states have call predecessors, (110), 71 states have call successors, (110) [2022-03-18 16:08:41,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 734 states to 734 states and 929 transitions. [2022-03-18 16:08:41,109 INFO L78 Accepts]: Start accepts. Automaton has 734 states and 929 transitions. Word has length 67 [2022-03-18 16:08:41,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 16:08:41,110 INFO L478 AbstractCegarLoop]: Abstraction has 734 states and 929 transitions. [2022-03-18 16:08:41,110 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.1) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (9), 9 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2022-03-18 16:08:41,110 INFO L276 IsEmpty]: Start isEmpty. Operand 734 states and 929 transitions. [2022-03-18 16:08:41,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-03-18 16:08:41,111 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 16:08:41,111 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 16:08:41,111 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2022-03-18 16:08:41,111 INFO L403 AbstractCegarLoop]: === Iteration 51 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 16:08:41,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 16:08:41,112 INFO L85 PathProgramCache]: Analyzing trace with hash 871891881, now seen corresponding path program 1 times [2022-03-18 16:08:41,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 16:08:41,112 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299166577] [2022-03-18 16:08:41,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 16:08:41,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 16:08:41,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:08:41,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 16:08:41,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:08:41,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 16:08:41,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:08:41,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 16:08:41,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:08:41,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-18 16:08:41,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:08:41,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-03-18 16:08:41,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:08:41,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-03-18 16:08:41,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:08:41,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 16:08:41,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:08:41,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 16:08:41,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 16:08:41,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299166577] [2022-03-18 16:08:41,316 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1299166577] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 16:08:41,316 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 16:08:41,316 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-18 16:08:41,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170703501] [2022-03-18 16:08:41,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 16:08:41,317 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-18 16:08:41,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 16:08:41,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-18 16:08:41,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2022-03-18 16:08:41,318 INFO L87 Difference]: Start difference. First operand 734 states and 929 transitions. Second operand has 12 states, 12 states have (on average 4.333333333333333) internal successors, (52), 5 states have internal predecessors, (52), 3 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 4 states have call predecessors, (7), 2 states have call successors, (7) [2022-03-18 16:08:42,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 16:08:42,841 INFO L93 Difference]: Finished difference Result 838 states and 1072 transitions. [2022-03-18 16:08:42,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-18 16:08:42,843 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.333333333333333) internal successors, (52), 5 states have internal predecessors, (52), 3 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 4 states have call predecessors, (7), 2 states have call successors, (7) Word has length 68 [2022-03-18 16:08:42,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 16:08:42,845 INFO L225 Difference]: With dead ends: 838 [2022-03-18 16:08:42,845 INFO L226 Difference]: Without dead ends: 829 [2022-03-18 16:08:42,846 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=113, Invalid=267, Unknown=0, NotChecked=0, Total=380 [2022-03-18 16:08:42,846 INFO L912 BasicCegarLoop]: 439 mSDtfsCounter, 1719 mSDsluCounter, 436 mSDsCounter, 0 mSdLazyCounter, 1529 mSolverCounterSat, 616 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1726 SdHoareTripleChecker+Valid, 875 SdHoareTripleChecker+Invalid, 2145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 616 IncrementalHoareTripleChecker+Valid, 1529 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-03-18 16:08:42,846 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [1726 Valid, 875 Invalid, 2145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [616 Valid, 1529 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-03-18 16:08:42,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 829 states. [2022-03-18 16:08:42,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 829 to 734. [2022-03-18 16:08:42,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 734 states, 582 states have (on average 1.2714776632302405) internal successors, (740), 600 states have internal predecessors, (740), 77 states have call successors, (77), 50 states have call predecessors, (77), 74 states have return successors, (110), 92 states have call predecessors, (110), 71 states have call successors, (110) [2022-03-18 16:08:42,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 734 states to 734 states and 927 transitions. [2022-03-18 16:08:42,954 INFO L78 Accepts]: Start accepts. Automaton has 734 states and 927 transitions. Word has length 68 [2022-03-18 16:08:42,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 16:08:42,954 INFO L478 AbstractCegarLoop]: Abstraction has 734 states and 927 transitions. [2022-03-18 16:08:42,954 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.333333333333333) internal successors, (52), 5 states have internal predecessors, (52), 3 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 4 states have call predecessors, (7), 2 states have call successors, (7) [2022-03-18 16:08:42,955 INFO L276 IsEmpty]: Start isEmpty. Operand 734 states and 927 transitions. [2022-03-18 16:08:42,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-03-18 16:08:42,956 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 16:08:42,956 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 16:08:42,956 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2022-03-18 16:08:42,956 INFO L403 AbstractCegarLoop]: === Iteration 52 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 16:08:42,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 16:08:42,957 INFO L85 PathProgramCache]: Analyzing trace with hash 881211856, now seen corresponding path program 1 times [2022-03-18 16:08:42,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 16:08:42,957 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169698692] [2022-03-18 16:08:42,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 16:08:42,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 16:08:42,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:08:43,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 16:08:43,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:08:43,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 16:08:43,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:08:43,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 16:08:43,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:08:43,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-18 16:08:43,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:08:43,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-18 16:08:43,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:08:43,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-18 16:08:43,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:08:43,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-03-18 16:08:43,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:08:43,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-03-18 16:08:43,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:08:43,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 16:08:43,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:08:43,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 16:08:43,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 16:08:43,273 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169698692] [2022-03-18 16:08:43,273 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1169698692] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 16:08:43,273 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 16:08:43,273 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-18 16:08:43,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328481492] [2022-03-18 16:08:43,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 16:08:43,273 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-18 16:08:43,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 16:08:43,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-18 16:08:43,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=359, Unknown=0, NotChecked=0, Total=420 [2022-03-18 16:08:43,274 INFO L87 Difference]: Start difference. First operand 734 states and 927 transitions. Second operand has 21 states, 20 states have (on average 2.7) internal successors, (54), 10 states have internal predecessors, (54), 4 states have call successors, (11), 10 states have call predecessors, (11), 4 states have return successors, (9), 5 states have call predecessors, (9), 3 states have call successors, (9) [2022-03-18 16:08:45,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 16:08:45,163 INFO L93 Difference]: Finished difference Result 812 states and 1036 transitions. [2022-03-18 16:08:45,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-03-18 16:08:45,164 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 2.7) internal successors, (54), 10 states have internal predecessors, (54), 4 states have call successors, (11), 10 states have call predecessors, (11), 4 states have return successors, (9), 5 states have call predecessors, (9), 3 states have call successors, (9) Word has length 74 [2022-03-18 16:08:45,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 16:08:45,165 INFO L225 Difference]: With dead ends: 812 [2022-03-18 16:08:45,165 INFO L226 Difference]: Without dead ends: 787 [2022-03-18 16:08:45,166 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=120, Invalid=692, Unknown=0, NotChecked=0, Total=812 [2022-03-18 16:08:45,166 INFO L912 BasicCegarLoop]: 441 mSDtfsCounter, 802 mSDsluCounter, 1742 mSDsCounter, 0 mSdLazyCounter, 3762 mSolverCounterSat, 294 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 807 SdHoareTripleChecker+Valid, 2183 SdHoareTripleChecker+Invalid, 4056 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 294 IncrementalHoareTripleChecker+Valid, 3762 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-03-18 16:08:45,167 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [807 Valid, 2183 Invalid, 4056 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [294 Valid, 3762 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-03-18 16:08:45,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 787 states. [2022-03-18 16:08:45,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 787 to 732. [2022-03-18 16:08:45,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 732 states, 581 states have (on average 1.270223752151463) internal successors, (738), 599 states have internal predecessors, (738), 76 states have call successors, (76), 50 states have call predecessors, (76), 74 states have return successors, (109), 91 states have call predecessors, (109), 70 states have call successors, (109) [2022-03-18 16:08:45,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 732 states to 732 states and 923 transitions. [2022-03-18 16:08:45,243 INFO L78 Accepts]: Start accepts. Automaton has 732 states and 923 transitions. Word has length 74 [2022-03-18 16:08:45,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 16:08:45,243 INFO L478 AbstractCegarLoop]: Abstraction has 732 states and 923 transitions. [2022-03-18 16:08:45,243 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 2.7) internal successors, (54), 10 states have internal predecessors, (54), 4 states have call successors, (11), 10 states have call predecessors, (11), 4 states have return successors, (9), 5 states have call predecessors, (9), 3 states have call successors, (9) [2022-03-18 16:08:45,243 INFO L276 IsEmpty]: Start isEmpty. Operand 732 states and 923 transitions. [2022-03-18 16:08:45,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-18 16:08:45,244 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 16:08:45,244 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 16:08:45,244 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2022-03-18 16:08:45,244 INFO L403 AbstractCegarLoop]: === Iteration 53 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 16:08:45,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 16:08:45,245 INFO L85 PathProgramCache]: Analyzing trace with hash 1188604284, now seen corresponding path program 1 times [2022-03-18 16:08:45,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 16:08:45,245 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476528085] [2022-03-18 16:08:45,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 16:08:45,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 16:08:45,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:08:45,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 16:08:45,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:08:45,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 16:08:45,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:08:45,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 16:08:45,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:08:45,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-18 16:08:45,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:08:45,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-18 16:08:45,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:08:45,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-03-18 16:08:45,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:08:45,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-18 16:08:45,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:08:45,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 16:08:45,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:08:45,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 16:08:45,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 16:08:45,591 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476528085] [2022-03-18 16:08:45,591 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1476528085] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 16:08:45,591 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 16:08:45,591 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2022-03-18 16:08:45,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588775251] [2022-03-18 16:08:45,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 16:08:45,591 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-03-18 16:08:45,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 16:08:45,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-03-18 16:08:45,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=441, Unknown=0, NotChecked=0, Total=506 [2022-03-18 16:08:45,592 INFO L87 Difference]: Start difference. First operand 732 states and 923 transitions. Second operand has 23 states, 22 states have (on average 2.3636363636363638) internal successors, (52), 11 states have internal predecessors, (52), 4 states have call successors, (10), 10 states have call predecessors, (10), 5 states have return successors, (8), 6 states have call predecessors, (8), 3 states have call successors, (8) [2022-03-18 16:08:47,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 16:08:47,807 INFO L93 Difference]: Finished difference Result 793 states and 1004 transitions. [2022-03-18 16:08:47,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-03-18 16:08:47,807 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 2.3636363636363638) internal successors, (52), 11 states have internal predecessors, (52), 4 states have call successors, (10), 10 states have call predecessors, (10), 5 states have return successors, (8), 6 states have call predecessors, (8), 3 states have call successors, (8) Word has length 70 [2022-03-18 16:08:47,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 16:08:47,809 INFO L225 Difference]: With dead ends: 793 [2022-03-18 16:08:47,809 INFO L226 Difference]: Without dead ends: 765 [2022-03-18 16:08:47,809 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=148, Invalid=908, Unknown=0, NotChecked=0, Total=1056 [2022-03-18 16:08:47,810 INFO L912 BasicCegarLoop]: 435 mSDtfsCounter, 767 mSDsluCounter, 2108 mSDsCounter, 0 mSdLazyCounter, 4539 mSolverCounterSat, 276 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 769 SdHoareTripleChecker+Valid, 2543 SdHoareTripleChecker+Invalid, 4815 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 276 IncrementalHoareTripleChecker+Valid, 4539 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-03-18 16:08:47,810 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [769 Valid, 2543 Invalid, 4815 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [276 Valid, 4539 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-03-18 16:08:47,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 765 states. [2022-03-18 16:08:47,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 765 to 728. [2022-03-18 16:08:47,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 728 states, 578 states have (on average 1.2698961937716262) internal successors, (734), 596 states have internal predecessors, (734), 75 states have call successors, (75), 50 states have call predecessors, (75), 74 states have return successors, (108), 90 states have call predecessors, (108), 69 states have call successors, (108) [2022-03-18 16:08:47,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 728 states to 728 states and 917 transitions. [2022-03-18 16:08:47,913 INFO L78 Accepts]: Start accepts. Automaton has 728 states and 917 transitions. Word has length 70 [2022-03-18 16:08:47,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 16:08:47,914 INFO L478 AbstractCegarLoop]: Abstraction has 728 states and 917 transitions. [2022-03-18 16:08:47,914 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 2.3636363636363638) internal successors, (52), 11 states have internal predecessors, (52), 4 states have call successors, (10), 10 states have call predecessors, (10), 5 states have return successors, (8), 6 states have call predecessors, (8), 3 states have call successors, (8) [2022-03-18 16:08:47,914 INFO L276 IsEmpty]: Start isEmpty. Operand 728 states and 917 transitions. [2022-03-18 16:08:47,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-03-18 16:08:47,915 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 16:08:47,915 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 16:08:47,915 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2022-03-18 16:08:47,915 INFO L403 AbstractCegarLoop]: === Iteration 54 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 16:08:47,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 16:08:47,916 INFO L85 PathProgramCache]: Analyzing trace with hash -1926600916, now seen corresponding path program 1 times [2022-03-18 16:08:47,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 16:08:47,916 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555051606] [2022-03-18 16:08:47,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 16:08:47,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 16:08:47,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:08:47,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 16:08:47,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:08:47,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 16:08:47,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:08:48,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 16:08:48,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:08:48,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-18 16:08:48,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:08:48,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 16:08:48,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:08:48,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-03-18 16:08:48,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:08:48,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-03-18 16:08:48,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:08:48,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 16:08:48,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 16:08:48,097 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555051606] [2022-03-18 16:08:48,097 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1555051606] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 16:08:48,097 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 16:08:48,097 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-18 16:08:48,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096035528] [2022-03-18 16:08:48,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 16:08:48,098 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-18 16:08:48,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 16:08:48,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-18 16:08:48,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2022-03-18 16:08:48,099 INFO L87 Difference]: Start difference. First operand 728 states and 917 transitions. Second operand has 12 states, 12 states have (on average 4.416666666666667) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-03-18 16:08:49,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 16:08:49,137 INFO L93 Difference]: Finished difference Result 799 states and 1007 transitions. [2022-03-18 16:08:49,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-18 16:08:49,137 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.416666666666667) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 69 [2022-03-18 16:08:49,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 16:08:49,138 INFO L225 Difference]: With dead ends: 799 [2022-03-18 16:08:49,138 INFO L226 Difference]: Without dead ends: 760 [2022-03-18 16:08:49,139 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2022-03-18 16:08:49,139 INFO L912 BasicCegarLoop]: 420 mSDtfsCounter, 690 mSDsluCounter, 744 mSDsCounter, 0 mSdLazyCounter, 1246 mSolverCounterSat, 252 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 692 SdHoareTripleChecker+Valid, 1164 SdHoareTripleChecker+Invalid, 1498 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 252 IncrementalHoareTripleChecker+Valid, 1246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-18 16:08:49,139 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [692 Valid, 1164 Invalid, 1498 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [252 Valid, 1246 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-18 16:08:49,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 760 states. [2022-03-18 16:08:49,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 760 to 723. [2022-03-18 16:08:49,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 723 states, 574 states have (on average 1.2700348432055748) internal successors, (729), 592 states have internal predecessors, (729), 74 states have call successors, (74), 50 states have call predecessors, (74), 74 states have return successors, (107), 89 states have call predecessors, (107), 68 states have call successors, (107) [2022-03-18 16:08:49,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 723 states to 723 states and 910 transitions. [2022-03-18 16:08:49,218 INFO L78 Accepts]: Start accepts. Automaton has 723 states and 910 transitions. Word has length 69 [2022-03-18 16:08:49,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 16:08:49,218 INFO L478 AbstractCegarLoop]: Abstraction has 723 states and 910 transitions. [2022-03-18 16:08:49,218 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.416666666666667) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-03-18 16:08:49,218 INFO L276 IsEmpty]: Start isEmpty. Operand 723 states and 910 transitions. [2022-03-18 16:08:49,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-03-18 16:08:49,219 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 16:08:49,219 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 16:08:49,219 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2022-03-18 16:08:49,219 INFO L403 AbstractCegarLoop]: === Iteration 55 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 16:08:49,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 16:08:49,219 INFO L85 PathProgramCache]: Analyzing trace with hash -51645449, now seen corresponding path program 1 times [2022-03-18 16:08:49,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 16:08:49,219 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617983587] [2022-03-18 16:08:49,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 16:08:49,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 16:08:49,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:08:49,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 16:08:49,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:08:49,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 16:08:49,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:08:49,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 16:08:49,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:08:49,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-18 16:08:49,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:08:49,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 16:08:49,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:08:49,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-18 16:08:49,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:08:49,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-03-18 16:08:49,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:08:49,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 16:08:49,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 16:08:49,465 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617983587] [2022-03-18 16:08:49,465 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1617983587] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 16:08:49,465 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 16:08:49,465 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-03-18 16:08:49,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530753489] [2022-03-18 16:08:49,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 16:08:49,466 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-03-18 16:08:49,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 16:08:49,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-03-18 16:08:49,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=256, Unknown=0, NotChecked=0, Total=306 [2022-03-18 16:08:49,466 INFO L87 Difference]: Start difference. First operand 723 states and 910 transitions. Second operand has 18 states, 18 states have (on average 2.9444444444444446) internal successors, (53), 8 states have internal predecessors, (53), 3 states have call successors, (9), 9 states have call predecessors, (9), 4 states have return successors, (7), 5 states have call predecessors, (7), 2 states have call successors, (7) [2022-03-18 16:08:51,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 16:08:51,397 INFO L93 Difference]: Finished difference Result 787 states and 995 transitions. [2022-03-18 16:08:51,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-03-18 16:08:51,398 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.9444444444444446) internal successors, (53), 8 states have internal predecessors, (53), 3 states have call successors, (9), 9 states have call predecessors, (9), 4 states have return successors, (7), 5 states have call predecessors, (7), 2 states have call successors, (7) Word has length 69 [2022-03-18 16:08:51,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 16:08:51,401 INFO L225 Difference]: With dead ends: 787 [2022-03-18 16:08:51,401 INFO L226 Difference]: Without dead ends: 757 [2022-03-18 16:08:51,401 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=96, Invalid=456, Unknown=0, NotChecked=0, Total=552 [2022-03-18 16:08:51,402 INFO L912 BasicCegarLoop]: 434 mSDtfsCounter, 682 mSDsluCounter, 1855 mSDsCounter, 0 mSdLazyCounter, 3852 mSolverCounterSat, 245 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 685 SdHoareTripleChecker+Valid, 2289 SdHoareTripleChecker+Invalid, 4097 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 245 IncrementalHoareTripleChecker+Valid, 3852 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-03-18 16:08:51,402 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [685 Valid, 2289 Invalid, 4097 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [245 Valid, 3852 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-03-18 16:08:51,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 757 states. [2022-03-18 16:08:51,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 757 to 720. [2022-03-18 16:08:51,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 720 states, 572 states have (on average 1.2692307692307692) internal successors, (726), 590 states have internal predecessors, (726), 73 states have call successors, (73), 50 states have call predecessors, (73), 74 states have return successors, (106), 88 states have call predecessors, (106), 67 states have call successors, (106) [2022-03-18 16:08:51,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 720 states to 720 states and 905 transitions. [2022-03-18 16:08:51,499 INFO L78 Accepts]: Start accepts. Automaton has 720 states and 905 transitions. Word has length 69 [2022-03-18 16:08:51,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 16:08:51,499 INFO L478 AbstractCegarLoop]: Abstraction has 720 states and 905 transitions. [2022-03-18 16:08:51,499 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.9444444444444446) internal successors, (53), 8 states have internal predecessors, (53), 3 states have call successors, (9), 9 states have call predecessors, (9), 4 states have return successors, (7), 5 states have call predecessors, (7), 2 states have call successors, (7) [2022-03-18 16:08:51,499 INFO L276 IsEmpty]: Start isEmpty. Operand 720 states and 905 transitions. [2022-03-18 16:08:51,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-03-18 16:08:51,501 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 16:08:51,501 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 16:08:51,501 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2022-03-18 16:08:51,501 INFO L403 AbstractCegarLoop]: === Iteration 56 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 16:08:51,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 16:08:51,501 INFO L85 PathProgramCache]: Analyzing trace with hash 618518284, now seen corresponding path program 1 times [2022-03-18 16:08:51,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 16:08:51,502 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304965008] [2022-03-18 16:08:51,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 16:08:51,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 16:08:51,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:08:51,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 16:08:51,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:08:51,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 16:08:51,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:08:51,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 16:08:51,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:08:51,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-18 16:08:51,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:08:51,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-03-18 16:08:51,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:08:51,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-03-18 16:08:51,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:08:51,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 16:08:51,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:08:51,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 16:08:51,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 16:08:51,746 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304965008] [2022-03-18 16:08:51,746 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [304965008] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 16:08:51,746 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 16:08:51,746 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-03-18 16:08:51,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169749647] [2022-03-18 16:08:51,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 16:08:51,746 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-03-18 16:08:51,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 16:08:51,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-03-18 16:08:51,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=256, Unknown=0, NotChecked=0, Total=306 [2022-03-18 16:08:51,747 INFO L87 Difference]: Start difference. First operand 720 states and 905 transitions. Second operand has 18 states, 18 states have (on average 2.9444444444444446) internal successors, (53), 8 states have internal predecessors, (53), 2 states have call successors, (9), 9 states have call predecessors, (9), 4 states have return successors, (7), 4 states have call predecessors, (7), 1 states have call successors, (7) [2022-03-18 16:08:53,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 16:08:53,445 INFO L93 Difference]: Finished difference Result 767 states and 969 transitions. [2022-03-18 16:08:53,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-03-18 16:08:53,445 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.9444444444444446) internal successors, (53), 8 states have internal predecessors, (53), 2 states have call successors, (9), 9 states have call predecessors, (9), 4 states have return successors, (7), 4 states have call predecessors, (7), 1 states have call successors, (7) Word has length 69 [2022-03-18 16:08:53,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 16:08:53,447 INFO L225 Difference]: With dead ends: 767 [2022-03-18 16:08:53,447 INFO L226 Difference]: Without dead ends: 761 [2022-03-18 16:08:53,447 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=100, Invalid=656, Unknown=0, NotChecked=0, Total=756 [2022-03-18 16:08:53,447 INFO L912 BasicCegarLoop]: 374 mSDtfsCounter, 1003 mSDsluCounter, 1238 mSDsCounter, 0 mSdLazyCounter, 3737 mSolverCounterSat, 349 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1016 SdHoareTripleChecker+Valid, 1612 SdHoareTripleChecker+Invalid, 4086 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 349 IncrementalHoareTripleChecker+Valid, 3737 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-03-18 16:08:53,448 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [1016 Valid, 1612 Invalid, 4086 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [349 Valid, 3737 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-03-18 16:08:53,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 761 states. [2022-03-18 16:08:53,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 761 to 717. [2022-03-18 16:08:53,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 717 states, 569 states have (on average 1.2636203866432338) internal successors, (719), 587 states have internal predecessors, (719), 73 states have call successors, (73), 50 states have call predecessors, (73), 74 states have return successors, (106), 88 states have call predecessors, (106), 67 states have call successors, (106) [2022-03-18 16:08:53,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 717 states to 717 states and 898 transitions. [2022-03-18 16:08:53,533 INFO L78 Accepts]: Start accepts. Automaton has 717 states and 898 transitions. Word has length 69 [2022-03-18 16:08:53,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 16:08:53,534 INFO L478 AbstractCegarLoop]: Abstraction has 717 states and 898 transitions. [2022-03-18 16:08:53,534 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.9444444444444446) internal successors, (53), 8 states have internal predecessors, (53), 2 states have call successors, (9), 9 states have call predecessors, (9), 4 states have return successors, (7), 4 states have call predecessors, (7), 1 states have call successors, (7) [2022-03-18 16:08:53,534 INFO L276 IsEmpty]: Start isEmpty. Operand 717 states and 898 transitions. [2022-03-18 16:08:53,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-03-18 16:08:53,535 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 16:08:53,535 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 16:08:53,535 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2022-03-18 16:08:53,535 INFO L403 AbstractCegarLoop]: === Iteration 57 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 16:08:53,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 16:08:53,535 INFO L85 PathProgramCache]: Analyzing trace with hash 618241454, now seen corresponding path program 1 times [2022-03-18 16:08:53,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 16:08:53,535 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587950375] [2022-03-18 16:08:53,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 16:08:53,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 16:08:53,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:08:53,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 16:08:53,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:08:53,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 16:08:53,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:08:53,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 16:08:53,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:08:53,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-18 16:08:53,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:08:53,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-03-18 16:08:53,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:08:53,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-03-18 16:08:53,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:08:53,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 16:08:53,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:08:53,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 16:08:53,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 16:08:53,735 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587950375] [2022-03-18 16:08:53,735 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [587950375] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 16:08:53,735 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 16:08:53,735 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-18 16:08:53,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924219918] [2022-03-18 16:08:53,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 16:08:53,735 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-18 16:08:53,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 16:08:53,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-18 16:08:53,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2022-03-18 16:08:53,736 INFO L87 Difference]: Start difference. First operand 717 states and 898 transitions. Second operand has 12 states, 12 states have (on average 4.416666666666667) internal successors, (53), 5 states have internal predecessors, (53), 3 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 4 states have call predecessors, (7), 2 states have call successors, (7) [2022-03-18 16:08:55,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 16:08:55,096 INFO L93 Difference]: Finished difference Result 816 states and 1033 transitions. [2022-03-18 16:08:55,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-03-18 16:08:55,097 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.416666666666667) internal successors, (53), 5 states have internal predecessors, (53), 3 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 4 states have call predecessors, (7), 2 states have call successors, (7) Word has length 69 [2022-03-18 16:08:55,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 16:08:55,098 INFO L225 Difference]: With dead ends: 816 [2022-03-18 16:08:55,098 INFO L226 Difference]: Without dead ends: 781 [2022-03-18 16:08:55,099 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=137, Invalid=325, Unknown=0, NotChecked=0, Total=462 [2022-03-18 16:08:55,099 INFO L912 BasicCegarLoop]: 434 mSDtfsCounter, 1187 mSDsluCounter, 464 mSDsCounter, 0 mSdLazyCounter, 1248 mSolverCounterSat, 395 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1194 SdHoareTripleChecker+Valid, 898 SdHoareTripleChecker+Invalid, 1643 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 395 IncrementalHoareTripleChecker+Valid, 1248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-03-18 16:08:55,099 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [1194 Valid, 898 Invalid, 1643 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [395 Valid, 1248 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-03-18 16:08:55,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 781 states. [2022-03-18 16:08:55,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 781 to 688. [2022-03-18 16:08:55,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 688 states, 545 states have (on average 1.2623853211009175) internal successors, (688), 562 states have internal predecessors, (688), 72 states have call successors, (72), 49 states have call predecessors, (72), 70 states have return successors, (102), 84 states have call predecessors, (102), 66 states have call successors, (102) [2022-03-18 16:08:55,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 688 states to 688 states and 862 transitions. [2022-03-18 16:08:55,192 INFO L78 Accepts]: Start accepts. Automaton has 688 states and 862 transitions. Word has length 69 [2022-03-18 16:08:55,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 16:08:55,192 INFO L478 AbstractCegarLoop]: Abstraction has 688 states and 862 transitions. [2022-03-18 16:08:55,192 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.416666666666667) internal successors, (53), 5 states have internal predecessors, (53), 3 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 4 states have call predecessors, (7), 2 states have call successors, (7) [2022-03-18 16:08:55,192 INFO L276 IsEmpty]: Start isEmpty. Operand 688 states and 862 transitions. [2022-03-18 16:08:55,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-03-18 16:08:55,194 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 16:08:55,194 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 16:08:55,194 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2022-03-18 16:08:55,194 INFO L403 AbstractCegarLoop]: === Iteration 58 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 16:08:55,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 16:08:55,194 INFO L85 PathProgramCache]: Analyzing trace with hash 711441589, now seen corresponding path program 1 times [2022-03-18 16:08:55,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 16:08:55,194 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063942333] [2022-03-18 16:08:55,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 16:08:55,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 16:08:55,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:08:55,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 16:08:55,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:08:55,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 16:08:55,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:08:55,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 16:08:55,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:08:55,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-18 16:08:55,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:08:55,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-03-18 16:08:55,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:08:55,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-03-18 16:08:55,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:08:55,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 16:08:55,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:08:55,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 16:08:55,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 16:08:55,369 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063942333] [2022-03-18 16:08:55,369 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1063942333] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 16:08:55,369 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 16:08:55,370 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-03-18 16:08:55,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439863258] [2022-03-18 16:08:55,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 16:08:55,370 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-18 16:08:55,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 16:08:55,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-18 16:08:55,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-03-18 16:08:55,371 INFO L87 Difference]: Start difference. First operand 688 states and 862 transitions. Second operand has 10 states, 10 states have (on average 5.3) internal successors, (53), 3 states have internal predecessors, (53), 2 states have call successors, (9), 9 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2022-03-18 16:08:56,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 16:08:56,264 INFO L93 Difference]: Finished difference Result 751 states and 947 transitions. [2022-03-18 16:08:56,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-18 16:08:56,265 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.3) internal successors, (53), 3 states have internal predecessors, (53), 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 69 [2022-03-18 16:08:56,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 16:08:56,266 INFO L225 Difference]: With dead ends: 751 [2022-03-18 16:08:56,266 INFO L226 Difference]: Without dead ends: 711 [2022-03-18 16:08:56,266 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 9 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=58, Invalid=98, Unknown=0, NotChecked=0, Total=156 [2022-03-18 16:08:56,267 INFO L912 BasicCegarLoop]: 431 mSDtfsCounter, 608 mSDsluCounter, 390 mSDsCounter, 0 mSdLazyCounter, 949 mSolverCounterSat, 193 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 623 SdHoareTripleChecker+Valid, 821 SdHoareTripleChecker+Invalid, 1142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 193 IncrementalHoareTripleChecker+Valid, 949 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-18 16:08:56,267 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [623 Valid, 821 Invalid, 1142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [193 Valid, 949 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-18 16:08:56,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 711 states. [2022-03-18 16:08:56,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 711 to 670. [2022-03-18 16:08:56,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 670 states, 532 states have (on average 1.255639097744361) internal successors, (668), 548 states have internal predecessors, (668), 71 states have call successors, (71), 48 states have call predecessors, (71), 66 states have return successors, (98), 80 states have call predecessors, (98), 65 states have call successors, (98) [2022-03-18 16:08:56,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 670 states to 670 states and 837 transitions. [2022-03-18 16:08:56,334 INFO L78 Accepts]: Start accepts. Automaton has 670 states and 837 transitions. Word has length 69 [2022-03-18 16:08:56,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 16:08:56,334 INFO L478 AbstractCegarLoop]: Abstraction has 670 states and 837 transitions. [2022-03-18 16:08:56,334 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.3) internal successors, (53), 3 states have internal predecessors, (53), 2 states have call successors, (9), 9 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2022-03-18 16:08:56,334 INFO L276 IsEmpty]: Start isEmpty. Operand 670 states and 837 transitions. [2022-03-18 16:08:56,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-03-18 16:08:56,335 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 16:08:56,335 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 16:08:56,335 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2022-03-18 16:08:56,336 INFO L403 AbstractCegarLoop]: === Iteration 59 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 16:08:56,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 16:08:56,336 INFO L85 PathProgramCache]: Analyzing trace with hash -645591887, now seen corresponding path program 1 times [2022-03-18 16:08:56,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 16:08:56,336 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117059054] [2022-03-18 16:08:56,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 16:08:56,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 16:08:56,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:08:56,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 16:08:56,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:08:56,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 16:08:56,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:08:56,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 16:08:56,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:08:56,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-18 16:08:56,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:08:56,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-18 16:08:56,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:08:56,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-03-18 16:08:56,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:08:56,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-18 16:08:56,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:08:56,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 16:08:56,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:08:56,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 16:08:56,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 16:08:56,525 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117059054] [2022-03-18 16:08:56,525 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1117059054] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 16:08:56,525 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 16:08:56,526 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-03-18 16:08:56,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581927574] [2022-03-18 16:08:56,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 16:08:56,526 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-03-18 16:08:56,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 16:08:56,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-03-18 16:08:56,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2022-03-18 16:08:56,527 INFO L87 Difference]: Start difference. First operand 670 states and 837 transitions. Second operand has 13 states, 13 states have (on average 4.076923076923077) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-03-18 16:08:57,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 16:08:57,737 INFO L93 Difference]: Finished difference Result 749 states and 936 transitions. [2022-03-18 16:08:57,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-18 16:08:57,737 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.076923076923077) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 71 [2022-03-18 16:08:57,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 16:08:57,739 INFO L225 Difference]: With dead ends: 749 [2022-03-18 16:08:57,739 INFO L226 Difference]: Without dead ends: 711 [2022-03-18 16:08:57,739 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2022-03-18 16:08:57,739 INFO L912 BasicCegarLoop]: 419 mSDtfsCounter, 683 mSDsluCounter, 897 mSDsCounter, 0 mSdLazyCounter, 1715 mSolverCounterSat, 249 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 684 SdHoareTripleChecker+Valid, 1316 SdHoareTripleChecker+Invalid, 1964 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 249 IncrementalHoareTripleChecker+Valid, 1715 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-03-18 16:08:57,740 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [684 Valid, 1316 Invalid, 1964 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [249 Valid, 1715 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-03-18 16:08:57,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 711 states. [2022-03-18 16:08:57,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 711 to 670. [2022-03-18 16:08:57,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 670 states, 532 states have (on average 1.2537593984962405) internal successors, (667), 548 states have internal predecessors, (667), 71 states have call successors, (71), 48 states have call predecessors, (71), 66 states have return successors, (98), 80 states have call predecessors, (98), 65 states have call successors, (98) [2022-03-18 16:08:57,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 670 states to 670 states and 836 transitions. [2022-03-18 16:08:57,802 INFO L78 Accepts]: Start accepts. Automaton has 670 states and 836 transitions. Word has length 71 [2022-03-18 16:08:57,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 16:08:57,802 INFO L478 AbstractCegarLoop]: Abstraction has 670 states and 836 transitions. [2022-03-18 16:08:57,802 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.076923076923077) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-03-18 16:08:57,803 INFO L276 IsEmpty]: Start isEmpty. Operand 670 states and 836 transitions. [2022-03-18 16:08:57,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-03-18 16:08:57,803 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 16:08:57,804 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 16:08:57,804 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2022-03-18 16:08:57,804 INFO L403 AbstractCegarLoop]: === Iteration 60 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 16:08:57,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 16:08:57,804 INFO L85 PathProgramCache]: Analyzing trace with hash 1405392111, now seen corresponding path program 1 times [2022-03-18 16:08:57,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 16:08:57,804 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399942688] [2022-03-18 16:08:57,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 16:08:57,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 16:08:57,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:08:57,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 16:08:57,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:08:57,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 16:08:57,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:08:57,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 16:08:57,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:08:57,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-18 16:08:57,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:08:57,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-18 16:08:57,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:08:58,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-03-18 16:08:58,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:08:58,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-18 16:08:58,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:08:58,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 16:08:58,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:08:58,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 16:08:58,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 16:08:58,118 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399942688] [2022-03-18 16:08:58,118 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1399942688] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 16:08:58,118 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 16:08:58,118 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-18 16:08:58,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034110414] [2022-03-18 16:08:58,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 16:08:58,119 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-18 16:08:58,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 16:08:58,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-18 16:08:58,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=359, Unknown=0, NotChecked=0, Total=420 [2022-03-18 16:08:58,120 INFO L87 Difference]: Start difference. First operand 670 states and 836 transitions. Second operand has 21 states, 20 states have (on average 2.65) internal successors, (53), 10 states have internal predecessors, (53), 4 states have call successors, (10), 10 states have call predecessors, (10), 4 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) [2022-03-18 16:09:00,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 16:09:00,148 INFO L93 Difference]: Finished difference Result 747 states and 942 transitions. [2022-03-18 16:09:00,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-03-18 16:09:00,148 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 2.65) internal successors, (53), 10 states have internal predecessors, (53), 4 states have call successors, (10), 10 states have call predecessors, (10), 4 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) Word has length 71 [2022-03-18 16:09:00,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 16:09:00,150 INFO L225 Difference]: With dead ends: 747 [2022-03-18 16:09:00,150 INFO L226 Difference]: Without dead ends: 709 [2022-03-18 16:09:00,150 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=120, Invalid=692, Unknown=0, NotChecked=0, Total=812 [2022-03-18 16:09:00,150 INFO L912 BasicCegarLoop]: 428 mSDtfsCounter, 932 mSDsluCounter, 2026 mSDsCounter, 0 mSdLazyCounter, 4203 mSolverCounterSat, 344 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 936 SdHoareTripleChecker+Valid, 2454 SdHoareTripleChecker+Invalid, 4547 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 344 IncrementalHoareTripleChecker+Valid, 4203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-03-18 16:09:00,151 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [936 Valid, 2454 Invalid, 4547 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [344 Valid, 4203 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-03-18 16:09:00,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 709 states. [2022-03-18 16:09:00,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 709 to 665. [2022-03-18 16:09:00,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 665 states, 528 states have (on average 1.25) internal successors, (660), 544 states have internal predecessors, (660), 70 states have call successors, (70), 48 states have call predecessors, (70), 66 states have return successors, (96), 79 states have call predecessors, (96), 64 states have call successors, (96) [2022-03-18 16:09:00,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 665 states to 665 states and 826 transitions. [2022-03-18 16:09:00,221 INFO L78 Accepts]: Start accepts. Automaton has 665 states and 826 transitions. Word has length 71 [2022-03-18 16:09:00,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 16:09:00,221 INFO L478 AbstractCegarLoop]: Abstraction has 665 states and 826 transitions. [2022-03-18 16:09:00,221 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 2.65) internal successors, (53), 10 states have internal predecessors, (53), 4 states have call successors, (10), 10 states have call predecessors, (10), 4 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) [2022-03-18 16:09:00,221 INFO L276 IsEmpty]: Start isEmpty. Operand 665 states and 826 transitions. [2022-03-18 16:09:00,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-03-18 16:09:00,222 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 16:09:00,222 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 16:09:00,222 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2022-03-18 16:09:00,222 INFO L403 AbstractCegarLoop]: === Iteration 61 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 16:09:00,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 16:09:00,223 INFO L85 PathProgramCache]: Analyzing trace with hash 1361964370, now seen corresponding path program 1 times [2022-03-18 16:09:00,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 16:09:00,223 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899302001] [2022-03-18 16:09:00,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 16:09:00,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 16:09:00,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:09:00,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 16:09:00,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:09:00,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 16:09:00,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:09:00,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 16:09:00,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:09:00,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-18 16:09:00,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:09:00,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-18 16:09:00,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:09:00,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-03-18 16:09:00,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:09:00,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-18 16:09:00,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:09:00,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 16:09:00,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:09:00,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 16:09:00,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 16:09:00,397 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899302001] [2022-03-18 16:09:00,397 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [899302001] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 16:09:00,397 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 16:09:00,397 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-03-18 16:09:00,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84246481] [2022-03-18 16:09:00,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 16:09:00,397 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-03-18 16:09:00,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 16:09:00,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-03-18 16:09:00,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2022-03-18 16:09:00,398 INFO L87 Difference]: Start difference. First operand 665 states and 826 transitions. Second operand has 13 states, 13 states have (on average 4.076923076923077) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-03-18 16:09:01,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 16:09:01,452 INFO L93 Difference]: Finished difference Result 742 states and 922 transitions. [2022-03-18 16:09:01,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-18 16:09:01,452 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.076923076923077) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 71 [2022-03-18 16:09:01,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 16:09:01,454 INFO L225 Difference]: With dead ends: 742 [2022-03-18 16:09:01,454 INFO L226 Difference]: Without dead ends: 698 [2022-03-18 16:09:01,454 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2022-03-18 16:09:01,454 INFO L912 BasicCegarLoop]: 408 mSDtfsCounter, 455 mSDsluCounter, 877 mSDsCounter, 0 mSdLazyCounter, 1483 mSolverCounterSat, 166 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 456 SdHoareTripleChecker+Valid, 1285 SdHoareTripleChecker+Invalid, 1649 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 166 IncrementalHoareTripleChecker+Valid, 1483 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-18 16:09:01,455 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [456 Valid, 1285 Invalid, 1649 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [166 Valid, 1483 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-18 16:09:01,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 698 states. [2022-03-18 16:09:01,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 698 to 659. [2022-03-18 16:09:01,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 659 states, 523 states have (on average 1.2504780114722753) internal successors, (654), 539 states have internal predecessors, (654), 69 states have call successors, (69), 48 states have call predecessors, (69), 66 states have return successors, (95), 78 states have call predecessors, (95), 63 states have call successors, (95) [2022-03-18 16:09:01,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 659 states to 659 states and 818 transitions. [2022-03-18 16:09:01,519 INFO L78 Accepts]: Start accepts. Automaton has 659 states and 818 transitions. Word has length 71 [2022-03-18 16:09:01,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 16:09:01,519 INFO L478 AbstractCegarLoop]: Abstraction has 659 states and 818 transitions. [2022-03-18 16:09:01,519 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.076923076923077) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-03-18 16:09:01,519 INFO L276 IsEmpty]: Start isEmpty. Operand 659 states and 818 transitions. [2022-03-18 16:09:01,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-03-18 16:09:01,525 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 16:09:01,526 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 16:09:01,526 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2022-03-18 16:09:01,526 INFO L403 AbstractCegarLoop]: === Iteration 62 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 16:09:01,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 16:09:01,527 INFO L85 PathProgramCache]: Analyzing trace with hash 696849523, now seen corresponding path program 1 times [2022-03-18 16:09:01,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 16:09:01,527 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595507846] [2022-03-18 16:09:01,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 16:09:01,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 16:09:01,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:09:01,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 16:09:01,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:09:01,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 16:09:01,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:09:01,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 16:09:01,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:09:01,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-18 16:09:01,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:09:01,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-03-18 16:09:01,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:09:01,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-03-18 16:09:01,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:09:01,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 16:09:01,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:09:01,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 16:09:01,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 16:09:01,809 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595507846] [2022-03-18 16:09:01,809 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1595507846] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 16:09:01,809 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 16:09:01,809 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-03-18 16:09:01,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254398103] [2022-03-18 16:09:01,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 16:09:01,810 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-03-18 16:09:01,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 16:09:01,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-03-18 16:09:01,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=256, Unknown=0, NotChecked=0, Total=306 [2022-03-18 16:09:01,810 INFO L87 Difference]: Start difference. First operand 659 states and 818 transitions. Second operand has 18 states, 18 states have (on average 3.0555555555555554) internal successors, (55), 8 states have internal predecessors, (55), 2 states have call successors, (9), 9 states have call predecessors, (9), 4 states have return successors, (7), 4 states have call predecessors, (7), 1 states have call successors, (7) [2022-03-18 16:09:03,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 16:09:03,597 INFO L93 Difference]: Finished difference Result 889 states and 1102 transitions. [2022-03-18 16:09:03,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-03-18 16:09:03,598 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.0555555555555554) internal successors, (55), 8 states have internal predecessors, (55), 2 states have call successors, (9), 9 states have call predecessors, (9), 4 states have return successors, (7), 4 states have call predecessors, (7), 1 states have call successors, (7) Word has length 71 [2022-03-18 16:09:03,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 16:09:03,599 INFO L225 Difference]: With dead ends: 889 [2022-03-18 16:09:03,599 INFO L226 Difference]: Without dead ends: 740 [2022-03-18 16:09:03,600 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=112, Invalid=700, Unknown=0, NotChecked=0, Total=812 [2022-03-18 16:09:03,600 INFO L912 BasicCegarLoop]: 382 mSDtfsCounter, 538 mSDsluCounter, 1569 mSDsCounter, 0 mSdLazyCounter, 3557 mSolverCounterSat, 193 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 551 SdHoareTripleChecker+Valid, 1951 SdHoareTripleChecker+Invalid, 3750 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 193 IncrementalHoareTripleChecker+Valid, 3557 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-03-18 16:09:03,600 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [551 Valid, 1951 Invalid, 3750 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [193 Valid, 3557 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-03-18 16:09:03,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 740 states. [2022-03-18 16:09:03,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 740 to 665. [2022-03-18 16:09:03,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 665 states, 529 states have (on average 1.2400756143667298) internal successors, (656), 545 states have internal predecessors, (656), 69 states have call successors, (69), 48 states have call predecessors, (69), 66 states have return successors, (95), 78 states have call predecessors, (95), 63 states have call successors, (95) [2022-03-18 16:09:03,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 665 states to 665 states and 820 transitions. [2022-03-18 16:09:03,664 INFO L78 Accepts]: Start accepts. Automaton has 665 states and 820 transitions. Word has length 71 [2022-03-18 16:09:03,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 16:09:03,664 INFO L478 AbstractCegarLoop]: Abstraction has 665 states and 820 transitions. [2022-03-18 16:09:03,664 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.0555555555555554) internal successors, (55), 8 states have internal predecessors, (55), 2 states have call successors, (9), 9 states have call predecessors, (9), 4 states have return successors, (7), 4 states have call predecessors, (7), 1 states have call successors, (7) [2022-03-18 16:09:03,664 INFO L276 IsEmpty]: Start isEmpty. Operand 665 states and 820 transitions. [2022-03-18 16:09:03,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-03-18 16:09:03,665 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 16:09:03,665 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 16:09:03,666 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2022-03-18 16:09:03,666 INFO L403 AbstractCegarLoop]: === Iteration 63 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 16:09:03,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 16:09:03,666 INFO L85 PathProgramCache]: Analyzing trace with hash 2057821935, now seen corresponding path program 1 times [2022-03-18 16:09:03,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 16:09:03,666 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950978045] [2022-03-18 16:09:03,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 16:09:03,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 16:09:03,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:09:03,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 16:09:03,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:09:03,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 16:09:03,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:09:03,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 16:09:03,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:09:03,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-18 16:09:03,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:09:03,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-18 16:09:03,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:09:03,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-18 16:09:03,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:09:03,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 16:09:03,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:09:03,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-03-18 16:09:03,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:09:03,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 16:09:03,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:09:03,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 16:09:03,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 16:09:03,966 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950978045] [2022-03-18 16:09:03,966 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [950978045] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 16:09:03,966 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 16:09:03,966 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-18 16:09:03,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079676002] [2022-03-18 16:09:03,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 16:09:03,966 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-18 16:09:03,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 16:09:03,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-18 16:09:03,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=359, Unknown=0, NotChecked=0, Total=420 [2022-03-18 16:09:03,967 INFO L87 Difference]: Start difference. First operand 665 states and 820 transitions. Second operand has 21 states, 21 states have (on average 2.7142857142857144) internal successors, (57), 10 states have internal predecessors, (57), 4 states have call successors, (11), 10 states have call predecessors, (11), 4 states have return successors, (9), 5 states have call predecessors, (9), 3 states have call successors, (9) [2022-03-18 16:09:05,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 16:09:05,879 INFO L93 Difference]: Finished difference Result 729 states and 905 transitions. [2022-03-18 16:09:05,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-03-18 16:09:05,879 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.7142857142857144) internal successors, (57), 10 states have internal predecessors, (57), 4 states have call successors, (11), 10 states have call predecessors, (11), 4 states have return successors, (9), 5 states have call predecessors, (9), 3 states have call successors, (9) Word has length 77 [2022-03-18 16:09:05,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 16:09:05,881 INFO L225 Difference]: With dead ends: 729 [2022-03-18 16:09:05,881 INFO L226 Difference]: Without dead ends: 700 [2022-03-18 16:09:05,881 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=120, Invalid=692, Unknown=0, NotChecked=0, Total=812 [2022-03-18 16:09:05,881 INFO L912 BasicCegarLoop]: 410 mSDtfsCounter, 449 mSDsluCounter, 2099 mSDsCounter, 0 mSdLazyCounter, 4146 mSolverCounterSat, 166 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 452 SdHoareTripleChecker+Valid, 2509 SdHoareTripleChecker+Invalid, 4312 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 166 IncrementalHoareTripleChecker+Valid, 4146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-03-18 16:09:05,882 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [452 Valid, 2509 Invalid, 4312 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [166 Valid, 4146 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-03-18 16:09:05,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 700 states. [2022-03-18 16:09:05,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 700 to 663. [2022-03-18 16:09:05,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 663 states, 527 states have (on average 1.239089184060721) internal successors, (653), 543 states have internal predecessors, (653), 69 states have call successors, (69), 48 states have call predecessors, (69), 66 states have return successors, (95), 78 states have call predecessors, (95), 63 states have call successors, (95) [2022-03-18 16:09:05,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 663 states to 663 states and 817 transitions. [2022-03-18 16:09:05,946 INFO L78 Accepts]: Start accepts. Automaton has 663 states and 817 transitions. Word has length 77 [2022-03-18 16:09:05,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 16:09:05,947 INFO L478 AbstractCegarLoop]: Abstraction has 663 states and 817 transitions. [2022-03-18 16:09:05,947 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.7142857142857144) internal successors, (57), 10 states have internal predecessors, (57), 4 states have call successors, (11), 10 states have call predecessors, (11), 4 states have return successors, (9), 5 states have call predecessors, (9), 3 states have call successors, (9) [2022-03-18 16:09:05,947 INFO L276 IsEmpty]: Start isEmpty. Operand 663 states and 817 transitions. [2022-03-18 16:09:05,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-03-18 16:09:05,948 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 16:09:05,948 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 16:09:05,948 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2022-03-18 16:09:05,948 INFO L403 AbstractCegarLoop]: === Iteration 64 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 16:09:05,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 16:09:05,948 INFO L85 PathProgramCache]: Analyzing trace with hash -1891319547, now seen corresponding path program 1 times [2022-03-18 16:09:05,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 16:09:05,949 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441502969] [2022-03-18 16:09:05,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 16:09:05,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 16:09:05,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:09:06,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 16:09:06,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:09:06,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 16:09:06,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:09:06,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 16:09:06,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:09:06,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-18 16:09:06,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:09:06,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-18 16:09:06,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:09:06,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-18 16:09:06,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:09:06,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 16:09:06,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:09:06,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-03-18 16:09:06,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:09:06,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 16:09:06,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:09:06,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 16:09:06,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 16:09:06,138 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441502969] [2022-03-18 16:09:06,138 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1441502969] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 16:09:06,138 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 16:09:06,138 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-03-18 16:09:06,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482648412] [2022-03-18 16:09:06,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 16:09:06,139 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-03-18 16:09:06,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 16:09:06,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-03-18 16:09:06,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2022-03-18 16:09:06,140 INFO L87 Difference]: Start difference. First operand 663 states and 817 transitions. Second operand has 13 states, 13 states have (on average 4.461538461538462) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (11), 10 states have call predecessors, (11), 3 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2022-03-18 16:09:07,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 16:09:07,097 INFO L93 Difference]: Finished difference Result 731 states and 898 transitions. [2022-03-18 16:09:07,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-18 16:09:07,097 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.461538461538462) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (11), 10 states have call predecessors, (11), 3 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) Word has length 78 [2022-03-18 16:09:07,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 16:09:07,098 INFO L225 Difference]: With dead ends: 731 [2022-03-18 16:09:07,099 INFO L226 Difference]: Without dead ends: 671 [2022-03-18 16:09:07,099 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2022-03-18 16:09:07,099 INFO L912 BasicCegarLoop]: 386 mSDtfsCounter, 802 mSDsluCounter, 651 mSDsCounter, 0 mSdLazyCounter, 1187 mSolverCounterSat, 299 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 803 SdHoareTripleChecker+Valid, 1037 SdHoareTripleChecker+Invalid, 1486 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 299 IncrementalHoareTripleChecker+Valid, 1187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-18 16:09:07,099 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [803 Valid, 1037 Invalid, 1486 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [299 Valid, 1187 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-18 16:09:07,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 671 states. [2022-03-18 16:09:07,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 671 to 647. [2022-03-18 16:09:07,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 647 states, 514 states have (on average 1.235408560311284) internal successors, (635), 530 states have internal predecessors, (635), 66 states have call successors, (66), 48 states have call predecessors, (66), 66 states have return successors, (91), 75 states have call predecessors, (91), 60 states have call successors, (91) [2022-03-18 16:09:07,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 647 states to 647 states and 792 transitions. [2022-03-18 16:09:07,167 INFO L78 Accepts]: Start accepts. Automaton has 647 states and 792 transitions. Word has length 78 [2022-03-18 16:09:07,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 16:09:07,167 INFO L478 AbstractCegarLoop]: Abstraction has 647 states and 792 transitions. [2022-03-18 16:09:07,167 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.461538461538462) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (11), 10 states have call predecessors, (11), 3 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2022-03-18 16:09:07,168 INFO L276 IsEmpty]: Start isEmpty. Operand 647 states and 792 transitions. [2022-03-18 16:09:07,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-03-18 16:09:07,169 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 16:09:07,169 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 16:09:07,169 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2022-03-18 16:09:07,169 INFO L403 AbstractCegarLoop]: === Iteration 65 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 16:09:07,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 16:09:07,169 INFO L85 PathProgramCache]: Analyzing trace with hash -403390025, now seen corresponding path program 1 times [2022-03-18 16:09:07,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 16:09:07,169 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357439570] [2022-03-18 16:09:07,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 16:09:07,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 16:09:07,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:09:07,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 16:09:07,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:09:07,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 16:09:07,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:09:07,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 16:09:07,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:09:07,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-18 16:09:07,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:09:07,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-18 16:09:07,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:09:07,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-03-18 16:09:07,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:09:07,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-18 16:09:07,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:09:07,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 16:09:07,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:09:07,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 16:09:07,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 16:09:07,358 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357439570] [2022-03-18 16:09:07,358 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [357439570] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 16:09:07,358 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 16:09:07,358 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-03-18 16:09:07,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267869689] [2022-03-18 16:09:07,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 16:09:07,359 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-03-18 16:09:07,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 16:09:07,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-03-18 16:09:07,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2022-03-18 16:09:07,359 INFO L87 Difference]: Start difference. First operand 647 states and 792 transitions. Second operand has 13 states, 13 states have (on average 4.230769230769231) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-03-18 16:09:08,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 16:09:08,284 INFO L93 Difference]: Finished difference Result 709 states and 864 transitions. [2022-03-18 16:09:08,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-18 16:09:08,284 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.230769230769231) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 73 [2022-03-18 16:09:08,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 16:09:08,285 INFO L225 Difference]: With dead ends: 709 [2022-03-18 16:09:08,285 INFO L226 Difference]: Without dead ends: 658 [2022-03-18 16:09:08,286 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2022-03-18 16:09:08,286 INFO L912 BasicCegarLoop]: 374 mSDtfsCounter, 895 mSDsluCounter, 770 mSDsCounter, 0 mSdLazyCounter, 1181 mSolverCounterSat, 346 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 896 SdHoareTripleChecker+Valid, 1144 SdHoareTripleChecker+Invalid, 1527 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 346 IncrementalHoareTripleChecker+Valid, 1181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-18 16:09:08,286 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [896 Valid, 1144 Invalid, 1527 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [346 Valid, 1181 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-18 16:09:08,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 658 states. [2022-03-18 16:09:08,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 658 to 634. [2022-03-18 16:09:08,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 634 states, 502 states have (on average 1.2310756972111554) internal successors, (618), 518 states have internal predecessors, (618), 65 states have call successors, (65), 48 states have call predecessors, (65), 66 states have return successors, (90), 74 states have call predecessors, (90), 59 states have call successors, (90) [2022-03-18 16:09:08,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 634 states to 634 states and 773 transitions. [2022-03-18 16:09:08,355 INFO L78 Accepts]: Start accepts. Automaton has 634 states and 773 transitions. Word has length 73 [2022-03-18 16:09:08,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 16:09:08,355 INFO L478 AbstractCegarLoop]: Abstraction has 634 states and 773 transitions. [2022-03-18 16:09:08,356 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.230769230769231) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-03-18 16:09:08,356 INFO L276 IsEmpty]: Start isEmpty. Operand 634 states and 773 transitions. [2022-03-18 16:09:08,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-03-18 16:09:08,357 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 16:09:08,357 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 16:09:08,357 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2022-03-18 16:09:08,357 INFO L403 AbstractCegarLoop]: === Iteration 66 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 16:09:08,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 16:09:08,357 INFO L85 PathProgramCache]: Analyzing trace with hash -1773843285, now seen corresponding path program 1 times [2022-03-18 16:09:08,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 16:09:08,357 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144768428] [2022-03-18 16:09:08,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 16:09:08,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 16:09:08,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:09:08,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 16:09:08,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:09:08,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 16:09:08,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:09:08,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 16:09:08,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:09:08,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-18 16:09:08,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:09:08,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-03-18 16:09:08,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:09:08,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-03-18 16:09:08,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:09:08,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 16:09:08,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:09:08,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-18 16:09:08,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:09:08,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 16:09:08,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 16:09:08,644 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144768428] [2022-03-18 16:09:08,644 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [144768428] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 16:09:08,644 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 16:09:08,644 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-18 16:09:08,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246686047] [2022-03-18 16:09:08,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 16:09:08,645 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-18 16:09:08,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 16:09:08,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-18 16:09:08,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=276, Unknown=0, NotChecked=0, Total=342 [2022-03-18 16:09:08,645 INFO L87 Difference]: Start difference. First operand 634 states and 773 transitions. Second operand has 19 states, 19 states have (on average 2.8947368421052633) internal successors, (55), 10 states have internal predecessors, (55), 5 states have call successors, (10), 10 states have call predecessors, (10), 4 states have return successors, (8), 6 states have call predecessors, (8), 4 states have call successors, (8) [2022-03-18 16:09:11,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 16:09:11,696 INFO L93 Difference]: Finished difference Result 1487 states and 1799 transitions. [2022-03-18 16:09:11,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-03-18 16:09:11,697 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.8947368421052633) internal successors, (55), 10 states have internal predecessors, (55), 5 states have call successors, (10), 10 states have call predecessors, (10), 4 states have return successors, (8), 6 states have call predecessors, (8), 4 states have call successors, (8) Word has length 73 [2022-03-18 16:09:11,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 16:09:11,699 INFO L225 Difference]: With dead ends: 1487 [2022-03-18 16:09:11,699 INFO L226 Difference]: Without dead ends: 1340 [2022-03-18 16:09:11,700 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 755 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=676, Invalid=2630, Unknown=0, NotChecked=0, Total=3306 [2022-03-18 16:09:11,700 INFO L912 BasicCegarLoop]: 395 mSDtfsCounter, 2456 mSDsluCounter, 870 mSDsCounter, 0 mSdLazyCounter, 3184 mSolverCounterSat, 764 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2461 SdHoareTripleChecker+Valid, 1265 SdHoareTripleChecker+Invalid, 3948 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 764 IncrementalHoareTripleChecker+Valid, 3184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-03-18 16:09:11,700 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [2461 Valid, 1265 Invalid, 3948 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [764 Valid, 3184 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-03-18 16:09:11,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1340 states. [2022-03-18 16:09:11,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1340 to 1028. [2022-03-18 16:09:11,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1028 states, 819 states have (on average 1.2515262515262515) internal successors, (1025), 845 states have internal predecessors, (1025), 101 states have call successors, (101), 79 states have call predecessors, (101), 107 states have return successors, (149), 110 states have call predecessors, (149), 95 states have call successors, (149) [2022-03-18 16:09:11,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1028 states to 1028 states and 1275 transitions. [2022-03-18 16:09:11,802 INFO L78 Accepts]: Start accepts. Automaton has 1028 states and 1275 transitions. Word has length 73 [2022-03-18 16:09:11,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 16:09:11,802 INFO L478 AbstractCegarLoop]: Abstraction has 1028 states and 1275 transitions. [2022-03-18 16:09:11,802 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.8947368421052633) internal successors, (55), 10 states have internal predecessors, (55), 5 states have call successors, (10), 10 states have call predecessors, (10), 4 states have return successors, (8), 6 states have call predecessors, (8), 4 states have call successors, (8) [2022-03-18 16:09:11,802 INFO L276 IsEmpty]: Start isEmpty. Operand 1028 states and 1275 transitions. [2022-03-18 16:09:11,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-03-18 16:09:11,804 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 16:09:11,804 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 16:09:11,804 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2022-03-18 16:09:11,804 INFO L403 AbstractCegarLoop]: === Iteration 67 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 16:09:11,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 16:09:11,804 INFO L85 PathProgramCache]: Analyzing trace with hash -1094571031, now seen corresponding path program 1 times [2022-03-18 16:09:11,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 16:09:11,804 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985698985] [2022-03-18 16:09:11,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 16:09:11,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 16:09:11,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:09:11,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 16:09:11,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:09:11,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 16:09:11,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:09:11,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 16:09:11,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:09:11,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-18 16:09:11,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:09:11,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-03-18 16:09:11,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:09:11,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-03-18 16:09:11,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:09:11,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 16:09:11,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:09:11,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-18 16:09:11,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:09:11,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 16:09:11,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 16:09:11,998 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985698985] [2022-03-18 16:09:11,998 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1985698985] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 16:09:11,998 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 16:09:11,998 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-03-18 16:09:11,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4137284] [2022-03-18 16:09:11,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 16:09:11,998 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-03-18 16:09:11,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 16:09:11,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-03-18 16:09:11,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2022-03-18 16:09:11,999 INFO L87 Difference]: Start difference. First operand 1028 states and 1275 transitions. Second operand has 14 states, 14 states have (on average 3.9285714285714284) internal successors, (55), 6 states have internal predecessors, (55), 5 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2022-03-18 16:09:13,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 16:09:13,706 INFO L93 Difference]: Finished difference Result 1359 states and 1652 transitions. [2022-03-18 16:09:13,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-03-18 16:09:13,706 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.9285714285714284) internal successors, (55), 6 states have internal predecessors, (55), 5 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) Word has length 73 [2022-03-18 16:09:13,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 16:09:13,708 INFO L225 Difference]: With dead ends: 1359 [2022-03-18 16:09:13,708 INFO L226 Difference]: Without dead ends: 1229 [2022-03-18 16:09:13,709 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=199, Invalid=613, Unknown=0, NotChecked=0, Total=812 [2022-03-18 16:09:13,709 INFO L912 BasicCegarLoop]: 650 mSDtfsCounter, 1888 mSDsluCounter, 634 mSDsCounter, 0 mSdLazyCounter, 1696 mSolverCounterSat, 627 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1892 SdHoareTripleChecker+Valid, 1284 SdHoareTripleChecker+Invalid, 2323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 627 IncrementalHoareTripleChecker+Valid, 1696 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-03-18 16:09:13,709 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [1892 Valid, 1284 Invalid, 2323 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [627 Valid, 1696 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-03-18 16:09:13,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1229 states. [2022-03-18 16:09:13,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1229 to 1105. [2022-03-18 16:09:13,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1105 states, 878 states have (on average 1.2391799544419135) internal successors, (1088), 900 states have internal predecessors, (1088), 113 states have call successors, (113), 83 states have call predecessors, (113), 113 states have return successors, (162), 126 states have call predecessors, (162), 107 states have call successors, (162) [2022-03-18 16:09:13,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1105 states to 1105 states and 1363 transitions. [2022-03-18 16:09:13,822 INFO L78 Accepts]: Start accepts. Automaton has 1105 states and 1363 transitions. Word has length 73 [2022-03-18 16:09:13,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 16:09:13,822 INFO L478 AbstractCegarLoop]: Abstraction has 1105 states and 1363 transitions. [2022-03-18 16:09:13,822 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.9285714285714284) internal successors, (55), 6 states have internal predecessors, (55), 5 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2022-03-18 16:09:13,822 INFO L276 IsEmpty]: Start isEmpty. Operand 1105 states and 1363 transitions. [2022-03-18 16:09:13,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-03-18 16:09:13,824 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 16:09:13,825 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 16:09:13,825 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2022-03-18 16:09:13,825 INFO L403 AbstractCegarLoop]: === Iteration 68 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 16:09:13,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 16:09:13,825 INFO L85 PathProgramCache]: Analyzing trace with hash -888306664, now seen corresponding path program 1 times [2022-03-18 16:09:13,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 16:09:13,825 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240568482] [2022-03-18 16:09:13,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 16:09:13,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 16:09:13,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:09:13,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 16:09:13,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:09:13,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 16:09:13,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:09:13,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 16:09:13,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:09:13,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-18 16:09:13,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:09:13,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-18 16:09:13,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:09:14,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-18 16:09:14,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:09:14,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-03-18 16:09:14,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:09:14,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-03-18 16:09:14,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:09:14,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 16:09:14,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:09:14,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 16:09:14,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 16:09:14,055 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240568482] [2022-03-18 16:09:14,055 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1240568482] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 16:09:14,055 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 16:09:14,055 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-03-18 16:09:14,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651379184] [2022-03-18 16:09:14,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 16:09:14,056 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-03-18 16:09:14,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 16:09:14,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-03-18 16:09:14,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2022-03-18 16:09:14,056 INFO L87 Difference]: Start difference. First operand 1105 states and 1363 transitions. Second operand has 15 states, 15 states have (on average 3.6666666666666665) internal successors, (55), 5 states have internal predecessors, (55), 2 states have call successors, (11), 10 states have call predecessors, (11), 3 states have return successors, (9), 4 states have call predecessors, (9), 2 states have call successors, (9) [2022-03-18 16:09:15,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 16:09:15,242 INFO L93 Difference]: Finished difference Result 1178 states and 1449 transitions. [2022-03-18 16:09:15,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-18 16:09:15,243 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.6666666666666665) internal successors, (55), 5 states have internal predecessors, (55), 2 states have call successors, (11), 10 states have call predecessors, (11), 3 states have return successors, (9), 4 states have call predecessors, (9), 2 states have call successors, (9) Word has length 75 [2022-03-18 16:09:15,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 16:09:15,245 INFO L225 Difference]: With dead ends: 1178 [2022-03-18 16:09:15,245 INFO L226 Difference]: Without dead ends: 1087 [2022-03-18 16:09:15,245 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2022-03-18 16:09:15,246 INFO L912 BasicCegarLoop]: 346 mSDtfsCounter, 648 mSDsluCounter, 1014 mSDsCounter, 0 mSdLazyCounter, 1976 mSolverCounterSat, 246 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 649 SdHoareTripleChecker+Valid, 1360 SdHoareTripleChecker+Invalid, 2222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 246 IncrementalHoareTripleChecker+Valid, 1976 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-03-18 16:09:15,246 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [649 Valid, 1360 Invalid, 2222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [246 Valid, 1976 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-03-18 16:09:15,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1087 states. [2022-03-18 16:09:15,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1087 to 1057. [2022-03-18 16:09:15,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1057 states, 844 states have (on average 1.2417061611374407) internal successors, (1048), 866 states have internal predecessors, (1048), 103 states have call successors, (103), 79 states have call predecessors, (103), 109 states have return successors, (150), 116 states have call predecessors, (150), 97 states have call successors, (150) [2022-03-18 16:09:15,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1057 states to 1057 states and 1301 transitions. [2022-03-18 16:09:15,352 INFO L78 Accepts]: Start accepts. Automaton has 1057 states and 1301 transitions. Word has length 75 [2022-03-18 16:09:15,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 16:09:15,353 INFO L478 AbstractCegarLoop]: Abstraction has 1057 states and 1301 transitions. [2022-03-18 16:09:15,353 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.6666666666666665) internal successors, (55), 5 states have internal predecessors, (55), 2 states have call successors, (11), 10 states have call predecessors, (11), 3 states have return successors, (9), 4 states have call predecessors, (9), 2 states have call successors, (9) [2022-03-18 16:09:15,353 INFO L276 IsEmpty]: Start isEmpty. Operand 1057 states and 1301 transitions. [2022-03-18 16:09:15,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-03-18 16:09:15,354 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 16:09:15,354 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 16:09:15,354 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2022-03-18 16:09:15,355 INFO L403 AbstractCegarLoop]: === Iteration 69 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 16:09:15,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 16:09:15,355 INFO L85 PathProgramCache]: Analyzing trace with hash 384049071, now seen corresponding path program 1 times [2022-03-18 16:09:15,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 16:09:15,355 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718787815] [2022-03-18 16:09:15,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 16:09:15,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 16:09:15,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:09:15,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 16:09:15,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:09:15,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 16:09:15,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:09:15,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 16:09:15,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:09:15,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-18 16:09:15,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:09:15,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 16:09:15,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:09:15,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-03-18 16:09:15,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:09:15,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-03-18 16:09:15,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:09:15,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 16:09:15,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 16:09:15,534 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718787815] [2022-03-18 16:09:15,534 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [718787815] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 16:09:15,534 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 16:09:15,534 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-18 16:09:15,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320762147] [2022-03-18 16:09:15,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 16:09:15,535 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-18 16:09:15,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 16:09:15,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-18 16:09:15,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2022-03-18 16:09:15,535 INFO L87 Difference]: Start difference. First operand 1057 states and 1301 transitions. Second operand has 12 states, 12 states have (on average 4.75) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-03-18 16:09:16,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 16:09:16,430 INFO L93 Difference]: Finished difference Result 1132 states and 1387 transitions. [2022-03-18 16:09:16,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-18 16:09:16,431 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.75) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 73 [2022-03-18 16:09:16,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 16:09:16,433 INFO L225 Difference]: With dead ends: 1132 [2022-03-18 16:09:16,433 INFO L226 Difference]: Without dead ends: 1071 [2022-03-18 16:09:16,433 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2022-03-18 16:09:16,433 INFO L912 BasicCegarLoop]: 331 mSDtfsCounter, 314 mSDsluCounter, 716 mSDsCounter, 0 mSdLazyCounter, 1035 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 316 SdHoareTripleChecker+Valid, 1047 SdHoareTripleChecker+Invalid, 1151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 1035 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-18 16:09:16,433 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [316 Valid, 1047 Invalid, 1151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 1035 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-18 16:09:16,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1071 states. [2022-03-18 16:09:16,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1071 to 1041. [2022-03-18 16:09:16,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1041 states, 830 states have (on average 1.2409638554216869) internal successors, (1030), 852 states have internal predecessors, (1030), 101 states have call successors, (101), 79 states have call predecessors, (101), 109 states have return successors, (146), 114 states have call predecessors, (146), 95 states have call successors, (146) [2022-03-18 16:09:16,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1041 states to 1041 states and 1277 transitions. [2022-03-18 16:09:16,555 INFO L78 Accepts]: Start accepts. Automaton has 1041 states and 1277 transitions. Word has length 73 [2022-03-18 16:09:16,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 16:09:16,556 INFO L478 AbstractCegarLoop]: Abstraction has 1041 states and 1277 transitions. [2022-03-18 16:09:16,556 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.75) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-03-18 16:09:16,556 INFO L276 IsEmpty]: Start isEmpty. Operand 1041 states and 1277 transitions. [2022-03-18 16:09:16,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-03-18 16:09:16,559 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 16:09:16,559 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 16:09:16,559 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2022-03-18 16:09:16,559 INFO L403 AbstractCegarLoop]: === Iteration 70 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 16:09:16,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 16:09:16,559 INFO L85 PathProgramCache]: Analyzing trace with hash -644807577, now seen corresponding path program 1 times [2022-03-18 16:09:16,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 16:09:16,560 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716122733] [2022-03-18 16:09:16,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 16:09:16,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 16:09:16,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-18 16:09:16,573 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-03-18 16:09:16,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-18 16:09:16,627 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-03-18 16:09:16,628 INFO L614 BasicCegarLoop]: Counterexample is feasible [2022-03-18 16:09:16,628 INFO L788 garLoopResultBuilder]: Registering result UNSAFE for location errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-03-18 16:09:16,630 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2022-03-18 16:09:16,633 INFO L718 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 16:09:16,635 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-03-18 16:09:16,739 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.03 04:09:16 BoogieIcfgContainer [2022-03-18 16:09:16,739 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-03-18 16:09:16,739 INFO L158 Benchmark]: Toolchain (without parser) took 155393.91ms. Allocated memory was 183.5MB in the beginning and 351.3MB in the end (delta: 167.8MB). Free memory was 133.5MB in the beginning and 281.6MB in the end (delta: -148.0MB). Peak memory consumption was 20.8MB. Max. memory is 8.0GB. [2022-03-18 16:09:16,739 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 183.5MB. Free memory was 152.0MB in the beginning and 151.9MB in the end (delta: 75.3kB). There was no memory consumed. Max. memory is 8.0GB. [2022-03-18 16:09:16,739 INFO L158 Benchmark]: CACSL2BoogieTranslator took 539.58ms. Allocated memory is still 183.5MB. Free memory was 133.4MB in the beginning and 145.6MB in the end (delta: -12.2MB). Peak memory consumption was 14.2MB. Max. memory is 8.0GB. [2022-03-18 16:09:16,739 INFO L158 Benchmark]: Boogie Preprocessor took 112.64ms. Allocated memory is still 183.5MB. Free memory was 145.6MB in the beginning and 140.4MB in the end (delta: 5.2MB). Peak memory consumption was 5.2MB. Max. memory is 8.0GB. [2022-03-18 16:09:16,739 INFO L158 Benchmark]: RCFGBuilder took 1028.43ms. Allocated memory is still 183.5MB. Free memory was 140.4MB in the beginning and 74.8MB in the end (delta: 65.5MB). Peak memory consumption was 65.0MB. Max. memory is 8.0GB. [2022-03-18 16:09:16,740 INFO L158 Benchmark]: TraceAbstraction took 153707.22ms. Allocated memory was 183.5MB in the beginning and 351.3MB in the end (delta: 167.8MB). Free memory was 74.3MB in the beginning and 281.6MB in the end (delta: -207.3MB). There was no memory consumed. Max. memory is 8.0GB. [2022-03-18 16:09:16,743 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 183.5MB. Free memory was 152.0MB in the beginning and 151.9MB in the end (delta: 75.3kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 539.58ms. Allocated memory is still 183.5MB. Free memory was 133.4MB in the beginning and 145.6MB in the end (delta: -12.2MB). Peak memory consumption was 14.2MB. Max. memory is 8.0GB. * Boogie Preprocessor took 112.64ms. Allocated memory is still 183.5MB. Free memory was 145.6MB in the beginning and 140.4MB in the end (delta: 5.2MB). Peak memory consumption was 5.2MB. Max. memory is 8.0GB. * RCFGBuilder took 1028.43ms. Allocated memory is still 183.5MB. Free memory was 140.4MB in the beginning and 74.8MB in the end (delta: 65.5MB). Peak memory consumption was 65.0MB. Max. memory is 8.0GB. * TraceAbstraction took 153707.22ms. Allocated memory was 183.5MB in the beginning and 351.3MB in the end (delta: 167.8MB). Free memory was 74.3MB in the beginning and 281.6MB in the end (delta: -207.3MB). 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 - CounterExampleResult [Line: 59]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L32] int s ; [L33] int UNLOADED ; [L34] int NP ; [L35] int DC ; [L36] int SKIP1 ; [L37] int SKIP2 ; [L38] int MPR1 ; [L39] int MPR3 ; [L40] int IPC ; [L41] int pended ; [L42] int compFptr ; [L43] int compRegistered ; [L44] int lowerDriverReturn ; [L45] int setEventCalled ; [L46] int customIrp ; [L47] int routine ; [L48] int myStatus ; [L49] int pirp ; [L50] int Executive ; [L51] int Suspended ; [L52] int KernelMode ; [L53] int DeviceUsageTypePaging ; VAL [\old(compFptr)=147535, \old(compRegistered)=147529, \old(customIrp)=147518, \old(DC)=147533, \old(DeviceUsageTypePaging)=147522, \old(Executive)=147515, \old(IPC)=147524, \old(KernelMode)=147520, \old(lowerDriverReturn)=147513, \old(MPR1)=147526, \old(MPR3)=147536, \old(myStatus)=147532, \old(NP)=147516, \old(pended)=147519, \old(pirp)=147527, \old(routine)=147514, \old(s)=147521, \old(setEventCalled)=147517, \old(SKIP1)=147523, \old(SKIP2)=147530, \old(Suspended)=147528, \old(UNLOADED)=147534, compFptr=0, compRegistered=0, customIrp=0, DC=0, DeviceUsageTypePaging=0, Executive=0, IPC=0, KernelMode=0, lowerDriverReturn=0, MPR1=0, MPR3=0, myStatus=0, NP=0, pended=0, pirp=0, routine=0, s=0, setEventCalled=0, SKIP1=0, SKIP2=0, Suspended=0, UNLOADED=0] [L1718] int pirp__IoStatus__Status ; [L1719] int d = __VERIFIER_nondet_int() ; [L1720] int status = __VERIFIER_nondet_int() ; [L1721] int irp = __VERIFIER_nondet_int() ; [L1722] int we_should_unload = __VERIFIER_nondet_int() ; [L1723] int irp_choice = __VERIFIER_nondet_int() ; [L1724] int devobj = __VERIFIER_nondet_int() ; [L1725] int __cil_tmp9 ; [L1730] s = 0 [L1731] UNLOADED = 0 [L1732] NP = 0 [L1733] DC = 0 [L1734] SKIP1 = 0 [L1735] SKIP2 = 0 [L1736] MPR1 = 0 [L1737] MPR3 = 0 [L1738] IPC = 0 [L1739] pended = 0 [L1740] compFptr = 0 [L1741] compRegistered = 0 [L1742] lowerDriverReturn = 0 [L1743] setEventCalled = 0 [L1744] customIrp = 0 [L1745] routine = 0 [L1746] myStatus = 0 [L1747] pirp = 0 [L1748] Executive = 0 [L1749] Suspended = 5 [L1750] KernelMode = 0 [L1751] DeviceUsageTypePaging = 1 [L1754] pirp = irp VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=0, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=0, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=0, customIrp=0, d=0, DC=0, DeviceUsageTypePaging=1, devobj=0, Executive=0, IPC=0, irp=-2, irp_choice=0, KernelMode=0, lowerDriverReturn=0, MPR1=0, MPR3=0, myStatus=0, NP=0, pended=0, pirp=-2, routine=0, s=0, setEventCalled=0, SKIP1=0, SKIP2=0, status=0, Suspended=5, UNLOADED=0, we_should_unload=0] [L1755] CALL _BLAST_init() VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=0, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=0, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=0, customIrp=0, DC=0, DeviceUsageTypePaging=1, Executive=0, IPC=0, KernelMode=0, lowerDriverReturn=0, MPR1=0, MPR3=0, myStatus=0, NP=0, pended=0, pirp=-2, routine=0, s=0, setEventCalled=0, SKIP1=0, SKIP2=0, Suspended=5, UNLOADED=0] [L67] UNLOADED = 0 [L68] NP = 1 [L69] DC = 2 [L70] SKIP1 = 3 [L71] SKIP2 = 4 [L72] MPR1 = 5 [L73] MPR3 = 6 [L74] IPC = 7 [L75] s = UNLOADED [L76] pended = 0 [L77] compFptr = 0 [L78] compRegistered = 0 [L79] lowerDriverReturn = 0 [L80] setEventCalled = 0 [L81] customIrp = 0 VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=0, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=0, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=0, customIrp=0, DC=2, DeviceUsageTypePaging=1, Executive=0, IPC=7, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=0, NP=1, pended=0, pirp=-2, routine=0, s=0, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1755] RET _BLAST_init() VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=0, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=0, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=0, customIrp=0, d=0, DC=2, DeviceUsageTypePaging=1, devobj=0, Executive=0, IPC=7, irp=-2, irp_choice=0, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=0, NP=1, pended=0, pirp=-2, routine=0, s=0, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, Suspended=5, UNLOADED=0, we_should_unload=0] [L1757] COND TRUE status >= 0 [L1758] s = NP [L1759] customIrp = 0 [L1760] setEventCalled = customIrp [L1761] lowerDriverReturn = setEventCalled [L1762] compRegistered = lowerDriverReturn [L1763] compFptr = compRegistered [L1764] pended = compFptr [L1765] pirp__IoStatus__Status = 0 [L1766] myStatus = 0 VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=0, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=0, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=0, customIrp=0, d=0, DC=2, DeviceUsageTypePaging=1, devobj=0, Executive=0, IPC=7, irp=-2, irp_choice=0, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=0, NP=1, pended=0, pirp=-2, pirp__IoStatus__Status=0, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, Suspended=5, UNLOADED=0, we_should_unload=0] [L1767] COND TRUE irp_choice == 0 [L1768] pirp__IoStatus__Status = -1073741637 [L1769] myStatus = -1073741637 VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=0, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=0, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=0, customIrp=0, d=0, DC=2, DeviceUsageTypePaging=1, devobj=0, Executive=0, IPC=7, irp=-2, irp_choice=0, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=0, pirp=-2, pirp__IoStatus__Status=-1073741637, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, Suspended=5, UNLOADED=0, we_should_unload=0] [L1772] CALL stub_driver_init() VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=0, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=0, customIrp=0, DC=2, DeviceUsageTypePaging=1, Executive=0, IPC=7, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=0, pirp=-2, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1707] s = NP [L1708] customIrp = 0 [L1709] setEventCalled = customIrp [L1710] lowerDriverReturn = setEventCalled [L1711] compRegistered = lowerDriverReturn [L1712] compFptr = compRegistered [L1713] pended = compFptr VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=0, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=0, customIrp=0, DC=2, DeviceUsageTypePaging=1, Executive=0, IPC=7, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=0, pirp=-2, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1772] RET stub_driver_init() VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=0, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=0, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=0, customIrp=0, d=0, DC=2, DeviceUsageTypePaging=1, devobj=0, Executive=0, IPC=7, irp=-2, irp_choice=0, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=0, pirp=-2, pirp__IoStatus__Status=-1073741637, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, Suspended=5, UNLOADED=0, we_should_unload=0] [L1775] COND FALSE !(status < 0) [L1779] int tmp_ndt_1; [L1780] tmp_ndt_1 = __VERIFIER_nondet_int() [L1781] COND TRUE tmp_ndt_1 == 2 VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=0, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=0, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=0, customIrp=0, d=0, DC=2, DeviceUsageTypePaging=1, devobj=0, Executive=0, IPC=7, irp=-2, irp_choice=0, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=0, pirp=-2, pirp__IoStatus__Status=-1073741637, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, Suspended=5, tmp_ndt_1=2, UNLOADED=0, we_should_unload=0] [L1798] CALL, EXPR CdAudioDeviceControl(devobj, pirp) VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=-2, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=-1073741637, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=0, customIrp=0, DC=2, DeviceUsageTypePaging=1, Executive=0, IPC=7, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=0, pirp=-2, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L313] int deviceExtension__Active = __VERIFIER_nondet_int() ; [L314] int status ; VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=-2, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=-1073741637, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=0, customIrp=0, DC=2, deviceExtension__Active=7, DeviceObject=0, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=-2, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=0, pirp=-2, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L317] COND FALSE !(deviceExtension__Active == 2) VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=-2, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=-1073741637, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=0, customIrp=0, DC=2, deviceExtension__Active=7, DeviceObject=0, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=-2, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=0, pirp=-2, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L320] COND FALSE !(deviceExtension__Active == 3) VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=-2, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=-1073741637, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=0, customIrp=0, DC=2, deviceExtension__Active=7, DeviceObject=0, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=-2, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=0, pirp=-2, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L323] COND FALSE !(deviceExtension__Active == 1) VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=-2, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=-1073741637, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=0, customIrp=0, DC=2, deviceExtension__Active=7, DeviceObject=0, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=-2, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=0, pirp=-2, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L326] COND TRUE deviceExtension__Active == 7 VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=-2, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=-1073741637, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=0, customIrp=0, DC=2, deviceExtension__Active=7, DeviceObject=0, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=-2, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=0, pirp=-2, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L348] CALL, EXPR CdAudioHPCdrDeviceControl(DeviceObject, Irp) VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=-2, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=-1073741637, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=0, customIrp=0, DC=2, DeviceUsageTypePaging=1, Executive=0, IPC=7, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=0, pirp=-2, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1591] int currentIrpStack__Parameters__DeviceIoControl__IoControlCode = __VERIFIER_nondet_int() ; [L1592] int deviceExtension__TargetDeviceObject = __VERIFIER_nondet_int() ; [L1593] int irpSp__Control ; [L1594] int tmp ; [L1595] int tmp___0 ; [L1596] int __cil_tmp8 ; [L1597] int __cil_tmp9 ; [L1598] int __cil_tmp10 ; [L1599] int __cil_tmp11 ; [L1600] int __cil_tmp12 ; [L1604] __cil_tmp8 = 56 [L1605] __cil_tmp9 = 16384 [L1606] __cil_tmp10 = 131072 [L1607] __cil_tmp11 = 147456 [L1608] __cil_tmp12 = 147512 VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=-2, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=-1073741637, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, __cil_tmp10=131072, __cil_tmp11=147456, __cil_tmp12=147512, __cil_tmp8=56, __cil_tmp9=16384, compFptr=0, compRegistered=0, currentIrpStack__Parameters__DeviceIoControl__IoControlCode=147512, customIrp=0, DC=2, deviceExtension__TargetDeviceObject=-3, DeviceObject=0, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=-2, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=0, pirp=-2, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1609] COND TRUE currentIrpStack__Parameters__DeviceIoControl__IoControlCode == __cil_tmp12 VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=-2, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=-1073741637, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, __cil_tmp10=131072, __cil_tmp11=147456, __cil_tmp12=147512, __cil_tmp8=56, __cil_tmp9=16384, compFptr=0, compRegistered=0, currentIrpStack__Parameters__DeviceIoControl__IoControlCode=147512, customIrp=0, DC=2, deviceExtension__TargetDeviceObject=-3, DeviceObject=0, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=-2, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=0, pirp=-2, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1610] COND FALSE !(s != NP) VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=-2, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=-1073741637, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, __cil_tmp10=131072, __cil_tmp11=147456, __cil_tmp12=147512, __cil_tmp8=56, __cil_tmp9=16384, compFptr=0, compRegistered=0, currentIrpStack__Parameters__DeviceIoControl__IoControlCode=147512, customIrp=0, DC=2, deviceExtension__TargetDeviceObject=-3, DeviceObject=0, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=-2, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=0, pirp=-2, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1615] COND FALSE !(compRegistered != 0) [L1620] compRegistered = 1 [L1621] routine = 0 VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=-2, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=-1073741637, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, __cil_tmp10=131072, __cil_tmp11=147456, __cil_tmp12=147512, __cil_tmp8=56, __cil_tmp9=16384, compFptr=0, compRegistered=1, currentIrpStack__Parameters__DeviceIoControl__IoControlCode=147512, customIrp=0, DC=2, deviceExtension__TargetDeviceObject=-3, DeviceObject=0, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=-2, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=0, pirp=-2, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1625] irpSp__Control = 224 VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=-2, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=-1073741637, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, __cil_tmp10=131072, __cil_tmp11=147456, __cil_tmp12=147512, __cil_tmp8=56, __cil_tmp9=16384, compFptr=0, compRegistered=1, currentIrpStack__Parameters__DeviceIoControl__IoControlCode=147512, customIrp=0, DC=2, deviceExtension__TargetDeviceObject=-3, DeviceObject=0, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=-2, irpSp__Control=224, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=0, pirp=-2, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1626] CALL, EXPR IofCallDriver(deviceExtension__TargetDeviceObject, Irp) VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=-3, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=-2, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=-1073741637, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=1, customIrp=0, DC=2, DeviceUsageTypePaging=1, Executive=0, IPC=7, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=0, pirp=-2, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1900] int Irp__PendingReturned = __VERIFIER_nondet_int() ; [L1901] int returnVal2 ; [L1902] int compRetStatus ; [L1903] int lcontext = __VERIFIER_nondet_int() ; [L1904] unsigned long __cil_tmp8 ; VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=-3, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=-2, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=-1073741637, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=1, customIrp=0, DC=2, DeviceObject=-3, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=-2, Irp__PendingReturned=0, KernelMode=0, lcontext=4, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=0, pirp=-2, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1907] COND TRUE \read(compRegistered) VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=-3, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=-2, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=-1073741637, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=1, customIrp=0, DC=2, DeviceObject=-3, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=-2, Irp__PendingReturned=0, KernelMode=0, lcontext=4, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=0, pirp=-2, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1908] COND TRUE routine == 0 VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=-3, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=-2, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=-1073741637, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=1, customIrp=0, DC=2, DeviceObject=-3, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=-2, Irp__PendingReturned=0, KernelMode=0, lcontext=4, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=0, pirp=-2, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1910] CALL, EXPR HPCdrCompletion(DeviceObject, Irp, lcontext) VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(Context)=4, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=-3, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=-2, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=-1073741637, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=1, customIrp=0, DC=2, DeviceUsageTypePaging=1, Executive=0, IPC=7, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=0, pirp=-2, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1569] int Irp__PendingReturned = __VERIFIER_nondet_int() ; [L1570] int Irp__AssociatedIrp__SystemBuffer = __VERIFIER_nondet_int() ; [L1573] COND TRUE \read(Irp__PendingReturned) VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(Context)=4, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=-3, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=-2, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=-1073741637, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=1, Context=4, customIrp=0, DC=2, DeviceObject=-3, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=-2, Irp__AssociatedIrp__SystemBuffer=0, Irp__PendingReturned=-4, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=0, pirp=-2, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1574] COND TRUE pended == 0 [L1575] pended = 1 VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(Context)=4, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=-3, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=-2, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=-1073741637, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=1, Context=4, customIrp=0, DC=2, DeviceObject=-3, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=-2, Irp__AssociatedIrp__SystemBuffer=0, Irp__PendingReturned=-4, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=1, pirp=-2, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1582] COND FALSE !(myStatus >= 0) VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(Context)=4, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=-3, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=-2, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=-1073741637, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=1, Context=4, customIrp=0, DC=2, DeviceObject=-3, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=-2, Irp__AssociatedIrp__SystemBuffer=0, Irp__PendingReturned=-4, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=1, pirp=-2, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1587] return (myStatus); VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(Context)=4, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=-3, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=-2, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=-1073741637, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, \result=-1073741637, compFptr=0, compRegistered=1, Context=4, customIrp=0, DC=2, DeviceObject=-3, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=-2, Irp__AssociatedIrp__SystemBuffer=0, Irp__PendingReturned=-4, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=1, pirp=-2, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1910] RET, EXPR HPCdrCompletion(DeviceObject, Irp, lcontext) VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=-3, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=-2, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=-1073741637, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=1, customIrp=0, DC=2, DeviceObject=-3, DeviceUsageTypePaging=1, Executive=0, HPCdrCompletion(DeviceObject, Irp, lcontext)=-1073741637, IPC=7, Irp=-2, Irp__PendingReturned=0, KernelMode=0, lcontext=4, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=1, pirp=-2, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1910] compRetStatus = HPCdrCompletion(DeviceObject, Irp, lcontext) [L1920] __cil_tmp8 = (unsigned long )compRetStatus VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=-3, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=-2, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=-1073741637, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, __cil_tmp8=3221225659, compFptr=0, compRegistered=1, compRetStatus=-1073741637, customIrp=0, DC=2, DeviceObject=-3, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=-2, Irp__PendingReturned=0, KernelMode=0, lcontext=4, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=1, pirp=-2, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1921] COND FALSE !(__cil_tmp8 == -1073741802) VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=-3, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=-2, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=-1073741637, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, __cil_tmp8=3221225659, compFptr=0, compRegistered=1, compRetStatus=-1073741637, customIrp=0, DC=2, DeviceObject=-3, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=-2, Irp__PendingReturned=0, KernelMode=0, lcontext=4, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=1, pirp=-2, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1928] COND FALSE !(\read(Irp__PendingReturned)) [L1931] int tmp_ndt_4; [L1932] tmp_ndt_4 = __VERIFIER_nondet_int() [L1933] COND TRUE tmp_ndt_4 == 0 VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=-3, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=-2, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=-1073741637, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, __cil_tmp8=3221225659, compFptr=0, compRegistered=1, compRetStatus=-1073741637, customIrp=0, DC=2, DeviceObject=-3, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=-2, Irp__PendingReturned=0, KernelMode=0, lcontext=4, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=1, pirp=-2, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, tmp_ndt_4=0, UNLOADED=0] [L1944] returnVal2 = 0 VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=-3, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=-2, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=-1073741637, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, __cil_tmp8=3221225659, compFptr=0, compRegistered=1, compRetStatus=-1073741637, customIrp=0, DC=2, DeviceObject=-3, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=-2, Irp__PendingReturned=0, KernelMode=0, lcontext=4, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=1, pirp=-2, returnVal2=0, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, tmp_ndt_4=0, UNLOADED=0] [L1958] COND TRUE s == NP [L1959] s = IPC [L1960] lowerDriverReturn = returnVal2 VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=-3, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=-2, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=-1073741637, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, __cil_tmp8=3221225659, compFptr=0, compRegistered=1, compRetStatus=-1073741637, customIrp=0, DC=2, DeviceObject=-3, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=-2, Irp__PendingReturned=0, KernelMode=0, lcontext=4, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=1, pirp=-2, returnVal2=0, routine=0, s=7, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, tmp_ndt_4=0, UNLOADED=0] [L1981] return (returnVal2); VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=-3, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=-2, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=-1073741637, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, \result=0, __cil_tmp8=3221225659, compFptr=0, compRegistered=1, compRetStatus=-1073741637, customIrp=0, DC=2, DeviceObject=-3, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=-2, Irp__PendingReturned=0, KernelMode=0, lcontext=4, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=1, pirp=-2, returnVal2=0, routine=0, s=7, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, tmp_ndt_4=0, UNLOADED=0] [L1626] RET, EXPR IofCallDriver(deviceExtension__TargetDeviceObject, Irp) VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=-2, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=-1073741637, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, __cil_tmp10=131072, __cil_tmp11=147456, __cil_tmp12=147512, __cil_tmp8=56, __cil_tmp9=16384, compFptr=0, compRegistered=1, currentIrpStack__Parameters__DeviceIoControl__IoControlCode=147512, customIrp=0, DC=2, deviceExtension__TargetDeviceObject=-3, DeviceObject=0, DeviceUsageTypePaging=1, Executive=0, IofCallDriver(deviceExtension__TargetDeviceObject, Irp)=0, IPC=7, Irp=-2, irpSp__Control=224, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=1, pirp=-2, routine=0, s=7, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1626] tmp = IofCallDriver(deviceExtension__TargetDeviceObject, Irp) [L1628] return (tmp); VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=-2, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=-1073741637, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, \result=0, __cil_tmp10=131072, __cil_tmp11=147456, __cil_tmp12=147512, __cil_tmp8=56, __cil_tmp9=16384, compFptr=0, compRegistered=1, currentIrpStack__Parameters__DeviceIoControl__IoControlCode=147512, customIrp=0, DC=2, deviceExtension__TargetDeviceObject=-3, DeviceObject=0, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=-2, irpSp__Control=224, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=1, pirp=-2, routine=0, s=7, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, tmp=0, UNLOADED=0] [L348] RET, EXPR CdAudioHPCdrDeviceControl(DeviceObject, Irp) VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=-2, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=-1073741637, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, CdAudioHPCdrDeviceControl(DeviceObject, Irp)=0, compFptr=0, compRegistered=1, customIrp=0, DC=2, deviceExtension__Active=7, DeviceObject=0, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=-2, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=1, pirp=-2, routine=0, s=7, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L348] status = CdAudioHPCdrDeviceControl(DeviceObject, Irp) [L363] return (status); VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=-2, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=-1073741637, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, \result=0, compFptr=0, compRegistered=1, customIrp=0, DC=2, deviceExtension__Active=7, DeviceObject=0, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=-2, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=1, pirp=-2, routine=0, s=7, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, Suspended=5, UNLOADED=0] [L1798] RET, EXPR CdAudioDeviceControl(devobj, pirp) VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=0, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=0, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, CdAudioDeviceControl(devobj, pirp)=0, compFptr=0, compRegistered=1, customIrp=0, d=0, DC=2, DeviceUsageTypePaging=1, devobj=0, Executive=0, IPC=7, irp=-2, irp_choice=0, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=1, pirp=-2, pirp__IoStatus__Status=-1073741637, routine=0, s=7, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, Suspended=5, tmp_ndt_1=2, UNLOADED=0, we_should_unload=0] [L1798] status = CdAudioDeviceControl(devobj, pirp) [L1819] COND FALSE !(\read(we_should_unload)) VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=0, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=0, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=1, customIrp=0, d=0, DC=2, DeviceUsageTypePaging=1, devobj=0, Executive=0, IPC=7, irp=-2, irp_choice=0, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=1, pirp=-2, pirp__IoStatus__Status=-1073741637, routine=0, s=7, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, Suspended=5, tmp_ndt_1=2, UNLOADED=0, we_should_unload=0] [L1825] COND TRUE pended == 1 VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=0, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=0, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=1, customIrp=0, d=0, DC=2, DeviceUsageTypePaging=1, devobj=0, Executive=0, IPC=7, irp=-2, irp_choice=0, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=1, pirp=-2, pirp__IoStatus__Status=-1073741637, routine=0, s=7, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, Suspended=5, tmp_ndt_1=2, UNLOADED=0, we_should_unload=0] [L1826] COND FALSE !(s == NP) VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=0, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=0, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=1, customIrp=0, d=0, DC=2, DeviceUsageTypePaging=1, devobj=0, Executive=0, IPC=7, irp=-2, irp_choice=0, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=1, pirp=-2, pirp__IoStatus__Status=-1073741637, routine=0, s=7, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, Suspended=5, tmp_ndt_1=2, UNLOADED=0, we_should_unload=0] [L1833] COND TRUE pended == 1 VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=0, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=0, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=1, customIrp=0, d=0, DC=2, DeviceUsageTypePaging=1, devobj=0, Executive=0, IPC=7, irp=-2, irp_choice=0, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=1, pirp=-2, pirp__IoStatus__Status=-1073741637, routine=0, s=7, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, Suspended=5, tmp_ndt_1=2, UNLOADED=0, we_should_unload=0] [L1834] COND FALSE !(s == MPR3) VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=0, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=0, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=1, customIrp=0, d=0, DC=2, DeviceUsageTypePaging=1, devobj=0, Executive=0, IPC=7, irp=-2, irp_choice=0, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=1, pirp=-2, pirp__IoStatus__Status=-1073741637, routine=0, s=7, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, Suspended=5, tmp_ndt_1=2, UNLOADED=0, we_should_unload=0] [L1841] COND TRUE s != UNLOADED VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=0, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=0, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=1, customIrp=0, d=0, DC=2, DeviceUsageTypePaging=1, devobj=0, Executive=0, IPC=7, irp=-2, irp_choice=0, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=1, pirp=-2, pirp__IoStatus__Status=-1073741637, routine=0, s=7, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, Suspended=5, tmp_ndt_1=2, UNLOADED=0, we_should_unload=0] [L1842] COND TRUE status != -1 VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=0, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=0, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=1, customIrp=0, d=0, DC=2, DeviceUsageTypePaging=1, devobj=0, Executive=0, IPC=7, irp=-2, irp_choice=0, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=1, pirp=-2, pirp__IoStatus__Status=-1073741637, routine=0, s=7, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, Suspended=5, tmp_ndt_1=2, UNLOADED=0, we_should_unload=0] [L1843] COND TRUE s != SKIP2 VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=0, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=0, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=1, customIrp=0, d=0, DC=2, DeviceUsageTypePaging=1, devobj=0, Executive=0, IPC=7, irp=-2, irp_choice=0, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=1, pirp=-2, pirp__IoStatus__Status=-1073741637, routine=0, s=7, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, Suspended=5, tmp_ndt_1=2, UNLOADED=0, we_should_unload=0] [L1844] COND FALSE !(s != IPC) VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=0, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=0, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=1, customIrp=0, d=0, DC=2, DeviceUsageTypePaging=1, devobj=0, Executive=0, IPC=7, irp=-2, irp_choice=0, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=1, pirp=-2, pirp__IoStatus__Status=-1073741637, routine=0, s=7, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, Suspended=5, tmp_ndt_1=2, UNLOADED=0, we_should_unload=0] [L1857] COND FALSE !(pended != 1) VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=0, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=0, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=1, customIrp=0, d=0, DC=2, DeviceUsageTypePaging=1, devobj=0, Executive=0, IPC=7, irp=-2, irp_choice=0, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=1, pirp=-2, pirp__IoStatus__Status=-1073741637, routine=0, s=7, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, Suspended=5, tmp_ndt_1=2, UNLOADED=0, we_should_unload=0] [L1869] COND TRUE status != 259 VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=0, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=0, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=1, customIrp=0, d=0, DC=2, DeviceUsageTypePaging=1, devobj=0, Executive=0, IPC=7, irp=-2, irp_choice=0, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=1, pirp=-2, pirp__IoStatus__Status=-1073741637, routine=0, s=7, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, Suspended=5, tmp_ndt_1=2, UNLOADED=0, we_should_unload=0] [L1871] CALL errorFn() VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=0, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=0, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=1, customIrp=0, DC=2, DeviceUsageTypePaging=1, Executive=0, IPC=7, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=1, pirp=-2, routine=0, s=7, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L59] reach_error() VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=0, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=0, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=1, customIrp=0, DC=2, DeviceUsageTypePaging=1, Executive=0, IPC=7, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=1, pirp=-2, routine=0, s=7, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 31 procedures, 520 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 153.5s, OverallIterations: 70, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 130.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 69250 SdHoareTripleChecker+Valid, 112.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 68846 mSDsluCounter, 120667 SdHoareTripleChecker+Invalid, 95.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 80711 mSDsCounter, 23723 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 193478 IncrementalHoareTripleChecker+Invalid, 217201 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 23723 mSolverCounterUnsat, 39956 mSDtfsCounter, 193478 mSolverCounterSat, 0.9s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2051 GetRequests, 904 SyntacticMatches, 18 SemanticMatches, 1129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2846 ImplicationChecksByTransitivity, 18.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1105occurred in iteration=67, InterpolantAutomatonStates: 914, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 5.4s AutomataMinimizationTime, 69 MinimizatonAttempts, 7760 StatesRemovedByMinimization, 69 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 14.9s InterpolantComputationTime, 4338 NumberOfCodeBlocks, 4338 NumberOfCodeBlocksAsserted, 72 NumberOfCheckSat, 4267 ConstructedInterpolants, 0 QuantifiedInterpolants, 21692 SizeOfPredicates, 5 NumberOfNonLiveVariables, 1689 ConjunctsInSsa, 13 ConjunctsInUnsatCore, 72 InterpolantComputations, 69 PerfectInterpolantSequences, 16/20 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2022-03-18 16:09:16,777 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...