/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -tc ../../../trunk/examples/toolchains/AutomizerC.xml -i ../sv-benchmarks/c/product-lines/minepump_spec2_product45.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-02 04:09:23,822 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-02 04:09:23,824 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-02 04:09:23,862 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-02 04:09:23,863 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-02 04:09:23,865 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-02 04:09:23,867 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-02 04:09:23,870 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-02 04:09:23,871 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-02 04:09:23,875 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-02 04:09:23,876 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-02 04:09:23,877 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-02 04:09:23,877 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-02 04:09:23,879 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-02 04:09:23,881 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-02 04:09:23,882 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-02 04:09:23,882 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-02 04:09:23,883 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-02 04:09:23,884 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-02 04:09:23,888 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-02 04:09:23,889 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-02 04:09:23,890 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-02 04:09:23,890 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-02 04:09:23,891 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-02 04:09:23,897 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-04-02 04:09:23,898 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-04-02 04:09:23,898 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-04-02 04:09:23,899 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-04-02 04:09:23,899 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-04-02 04:09:23,900 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-04-02 04:09:23,900 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-02 04:09:23,900 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-02 04:09:23,901 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-02 04:09:23,902 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-02 04:09:23,902 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-02 04:09:23,902 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-02 04:09:23,903 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-02 04:09:23,903 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-02 04:09:23,903 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-02 04:09:23,903 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-02 04:09:23,904 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-02 04:09:23,905 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 [2023-04-02 04:09:23,929 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-02 04:09:23,929 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-02 04:09:23,929 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-02 04:09:23,929 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-02 04:09:23,931 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-02 04:09:23,931 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-02 04:09:23,931 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-04-02 04:09:23,931 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-04-02 04:09:23,931 INFO L138 SettingsManager]: * Use SBE=true [2023-04-02 04:09:23,931 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-02 04:09:23,932 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-02 04:09:23,932 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-02 04:09:23,932 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-02 04:09:23,932 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-02 04:09:23,932 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-02 04:09:23,933 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-02 04:09:23,933 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-02 04:09:23,933 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-02 04:09:23,933 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-02 04:09:23,933 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-02 04:09:23,933 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-02 04:09:23,933 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-02 04:09:23,933 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-04-02 04:09:23,933 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-02 04:09:23,933 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 04:09:23,933 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-02 04:09:23,934 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-02 04:09:23,934 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-02 04:09:23,934 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-04-02 04:09:23,934 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-02 04:09:23,934 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-04-02 04:09:23,934 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-02 04:09:23,934 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-04-02 04:09:23,934 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-04-02 04:09:23,935 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-04-02 04:09:23,935 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-04-02 04:09:24,138 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-02 04:09:24,164 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-02 04:09:24,166 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-02 04:09:24,167 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-02 04:09:24,167 INFO L275 PluginConnector]: CDTParser initialized [2023-04-02 04:09:24,168 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/minepump_spec2_product45.cil.c [2023-04-02 04:09:25,345 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-02 04:09:25,541 INFO L351 CDTParser]: Found 1 translation units. [2023-04-02 04:09:25,541 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec2_product45.cil.c [2023-04-02 04:09:25,552 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ac2317316/f21f70b78cc04528b2a7dea2837c6c45/FLAGe4c0f794a [2023-04-02 04:09:25,576 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ac2317316/f21f70b78cc04528b2a7dea2837c6c45 [2023-04-02 04:09:25,578 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-02 04:09:25,579 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-02 04:09:25,580 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-02 04:09:25,587 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-02 04:09:25,590 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-02 04:09:25,590 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 04:09:25" (1/1) ... [2023-04-02 04:09:25,591 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@332a5c4a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 04:09:25, skipping insertion in model container [2023-04-02 04:09:25,591 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 04:09:25" (1/1) ... [2023-04-02 04:09:25,596 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-02 04:09:25,632 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-02 04:09:25,874 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec2_product45.cil.c[11292,11305] [2023-04-02 04:09:25,929 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 04:09:25,938 INFO L203 MainTranslator]: Completed pre-run [2023-04-02 04:09:25,992 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec2_product45.cil.c[11292,11305] [2023-04-02 04:09:26,002 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 04:09:26,019 INFO L208 MainTranslator]: Completed translation [2023-04-02 04:09:26,020 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 04:09:26 WrapperNode [2023-04-02 04:09:26,020 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-02 04:09:26,021 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-02 04:09:26,021 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-02 04:09:26,021 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-02 04:09:26,030 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 04:09:26" (1/1) ... [2023-04-02 04:09:26,030 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 04:09:26" (1/1) ... [2023-04-02 04:09:26,052 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 04:09:26" (1/1) ... [2023-04-02 04:09:26,052 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 04:09:26" (1/1) ... [2023-04-02 04:09:26,082 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 04:09:26" (1/1) ... [2023-04-02 04:09:26,087 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 04:09:26" (1/1) ... [2023-04-02 04:09:26,102 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 04:09:26" (1/1) ... [2023-04-02 04:09:26,104 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 04:09:26" (1/1) ... [2023-04-02 04:09:26,107 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-02 04:09:26,108 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-02 04:09:26,108 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-02 04:09:26,108 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-02 04:09:26,109 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 04:09:26" (1/1) ... [2023-04-02 04:09:26,131 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 04:09:26,141 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 04:09:26,180 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) [2023-04-02 04:09:26,196 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 [2023-04-02 04:09:26,211 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-02 04:09:26,211 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-02 04:09:26,212 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2023-04-02 04:09:26,212 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-02 04:09:26,212 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2023-04-02 04:09:26,213 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2023-04-02 04:09:26,213 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2023-04-02 04:09:26,213 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2023-04-02 04:09:26,213 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2023-04-02 04:09:26,213 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2023-04-02 04:09:26,213 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2023-04-02 04:09:26,213 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2023-04-02 04:09:26,213 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2023-04-02 04:09:26,213 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2023-04-02 04:09:26,214 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2023-04-02 04:09:26,214 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-02 04:09:26,214 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2023-04-02 04:09:26,214 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2023-04-02 04:09:26,214 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2023-04-02 04:09:26,214 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2023-04-02 04:09:26,214 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2023-04-02 04:09:26,214 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2023-04-02 04:09:26,214 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2023-04-02 04:09:26,214 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2023-04-02 04:09:26,214 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2023-04-02 04:09:26,214 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2023-04-02 04:09:26,214 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2023-04-02 04:09:26,215 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2023-04-02 04:09:26,215 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2023-04-02 04:09:26,215 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2023-04-02 04:09:26,215 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2023-04-02 04:09:26,215 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2023-04-02 04:09:26,215 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2023-04-02 04:09:26,215 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2023-04-02 04:09:26,215 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2023-04-02 04:09:26,215 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2023-04-02 04:09:26,215 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2023-04-02 04:09:26,215 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2023-04-02 04:09:26,215 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2023-04-02 04:09:26,215 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2023-04-02 04:09:26,215 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2023-04-02 04:09:26,216 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-02 04:09:26,216 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-02 04:09:26,216 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-02 04:09:26,216 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-02 04:09:26,216 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-04-02 04:09:26,216 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2023-04-02 04:09:26,216 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2023-04-02 04:09:26,216 INFO L130 BoogieDeclarations]: Found specification of procedure free [2023-04-02 04:09:26,216 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2023-04-02 04:09:26,216 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-04-02 04:09:26,217 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-04-02 04:09:26,217 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-02 04:09:26,217 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-04-02 04:09:26,218 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2023-04-02 04:09:26,218 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-02 04:09:26,218 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2023-04-02 04:09:26,218 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2023-04-02 04:09:26,218 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-02 04:09:26,218 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2023-04-02 04:09:26,219 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2023-04-02 04:09:26,219 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2023-04-02 04:09:26,219 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2023-04-02 04:09:26,219 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2023-04-02 04:09:26,219 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2023-04-02 04:09:26,219 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2023-04-02 04:09:26,219 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2023-04-02 04:09:26,219 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2023-04-02 04:09:26,219 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2023-04-02 04:09:26,219 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2023-04-02 04:09:26,220 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2023-04-02 04:09:26,220 INFO L130 BoogieDeclarations]: Found specification of procedure test [2023-04-02 04:09:26,220 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2023-04-02 04:09:26,220 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2023-04-02 04:09:26,220 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2023-04-02 04:09:26,220 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2023-04-02 04:09:26,220 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-02 04:09:26,220 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2023-04-02 04:09:26,220 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2023-04-02 04:09:26,220 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2023-04-02 04:09:26,220 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2023-04-02 04:09:26,220 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2023-04-02 04:09:26,220 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2023-04-02 04:09:26,221 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2023-04-02 04:09:26,221 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2023-04-02 04:09:26,221 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2023-04-02 04:09:26,221 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2023-04-02 04:09:26,221 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2023-04-02 04:09:26,222 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2023-04-02 04:09:26,222 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2023-04-02 04:09:26,222 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2023-04-02 04:09:26,222 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2023-04-02 04:09:26,222 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2023-04-02 04:09:26,223 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-02 04:09:26,223 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-02 04:09:26,223 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-02 04:09:26,384 INFO L236 CfgBuilder]: Building ICFG [2023-04-02 04:09:26,386 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-02 04:09:26,854 INFO L277 CfgBuilder]: Performing block encoding [2023-04-02 04:09:26,861 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-02 04:09:26,861 INFO L302 CfgBuilder]: Removed 5 assume(true) statements. [2023-04-02 04:09:26,863 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 04:09:26 BoogieIcfgContainer [2023-04-02 04:09:26,863 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-02 04:09:26,864 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-02 04:09:26,864 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-02 04:09:26,867 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-02 04:09:26,867 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.04 04:09:25" (1/3) ... [2023-04-02 04:09:26,867 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33d228b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 04:09:26, skipping insertion in model container [2023-04-02 04:09:26,867 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 04:09:26" (2/3) ... [2023-04-02 04:09:26,868 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33d228b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 04:09:26, skipping insertion in model container [2023-04-02 04:09:26,868 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 04:09:26" (3/3) ... [2023-04-02 04:09:26,869 INFO L112 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product45.cil.c [2023-04-02 04:09:26,881 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-02 04:09:26,882 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-02 04:09:26,934 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-02 04:09:26,939 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@51c98, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-04-02 04:09:26,939 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-02 04:09:26,943 INFO L276 IsEmpty]: Start isEmpty. Operand has 178 states, 98 states have (on average 1.3061224489795917) internal successors, (128), 111 states have internal predecessors, (128), 48 states have call successors, (48), 29 states have call predecessors, (48), 29 states have return successors, (48), 44 states have call predecessors, (48), 48 states have call successors, (48) [2023-04-02 04:09:26,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-04-02 04:09:26,972 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 04:09:26,973 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 04:09:26,974 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 04:09:26,980 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 04:09:26,981 INFO L85 PathProgramCache]: Analyzing trace with hash -678428720, now seen corresponding path program 1 times [2023-04-02 04:09:26,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 04:09:26,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104338792] [2023-04-02 04:09:26,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 04:09:26,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 04:09:27,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:09:27,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 04:09:27,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:09:27,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 04:09:27,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:09:27,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-04-02 04:09:27,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:09:27,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-04-02 04:09:27,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:09:27,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-04-02 04:09:27,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:09:27,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-04-02 04:09:27,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:09:27,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-04-02 04:09:27,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:09:27,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-04-02 04:09:27,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:09:27,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 04:09:27,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 04:09:27,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104338792] [2023-04-02 04:09:27,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [104338792] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 04:09:27,309 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 04:09:27,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 04:09:27,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935549804] [2023-04-02 04:09:27,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 04:09:27,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 04:09:27,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 04:09:27,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 04:09:27,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-04-02 04:09:27,351 INFO L87 Difference]: Start difference. First operand has 178 states, 98 states have (on average 1.3061224489795917) internal successors, (128), 111 states have internal predecessors, (128), 48 states have call successors, (48), 29 states have call predecessors, (48), 29 states have return successors, (48), 44 states have call predecessors, (48), 48 states have call successors, (48) Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 2 states have internal predecessors, (28), 2 states have call successors, (15), 4 states have call predecessors, (15), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-04-02 04:09:27,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 04:09:27,774 INFO L93 Difference]: Finished difference Result 302 states and 395 transitions. [2023-04-02 04:09:27,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-04-02 04:09:27,777 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 2 states have internal predecessors, (28), 2 states have call successors, (15), 4 states have call predecessors, (15), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 51 [2023-04-02 04:09:27,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 04:09:27,784 INFO L225 Difference]: With dead ends: 302 [2023-04-02 04:09:27,785 INFO L226 Difference]: Without dead ends: 168 [2023-04-02 04:09:27,787 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-04-02 04:09:27,790 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 182 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 196 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 197 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 305 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-02 04:09:27,790 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [197 Valid, 62 Invalid, 305 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 196 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-02 04:09:27,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2023-04-02 04:09:27,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 135. [2023-04-02 04:09:27,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 79 states have (on average 1.2531645569620253) internal successors, (99), 89 states have internal predecessors, (99), 33 states have call successors, (33), 27 states have call predecessors, (33), 22 states have return successors, (28), 24 states have call predecessors, (28), 28 states have call successors, (28) [2023-04-02 04:09:27,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 160 transitions. [2023-04-02 04:09:27,840 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 160 transitions. Word has length 51 [2023-04-02 04:09:27,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 04:09:27,840 INFO L495 AbstractCegarLoop]: Abstraction has 135 states and 160 transitions. [2023-04-02 04:09:27,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 2 states have internal predecessors, (28), 2 states have call successors, (15), 4 states have call predecessors, (15), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-04-02 04:09:27,841 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 160 transitions. [2023-04-02 04:09:27,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-04-02 04:09:27,842 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 04:09:27,843 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 04:09:27,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-02 04:09:27,843 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 04:09:27,843 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 04:09:27,844 INFO L85 PathProgramCache]: Analyzing trace with hash -356476460, now seen corresponding path program 1 times [2023-04-02 04:09:27,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 04:09:27,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093535538] [2023-04-02 04:09:27,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 04:09:27,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 04:09:27,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:09:27,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 04:09:27,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:09:27,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 04:09:27,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:09:27,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-04-02 04:09:27,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:09:27,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-04-02 04:09:27,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:09:27,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-04-02 04:09:27,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:09:27,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-04-02 04:09:27,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:09:27,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-04-02 04:09:27,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:09:27,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-04-02 04:09:27,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:09:27,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 04:09:27,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 04:09:27,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093535538] [2023-04-02 04:09:27,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1093535538] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 04:09:27,966 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 04:09:27,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-02 04:09:27,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759790132] [2023-04-02 04:09:27,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 04:09:27,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-02 04:09:27,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 04:09:27,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-02 04:09:27,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-04-02 04:09:27,969 INFO L87 Difference]: Start difference. First operand 135 states and 160 transitions. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (15), 4 states have call predecessors, (15), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-04-02 04:09:28,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 04:09:28,346 INFO L93 Difference]: Finished difference Result 247 states and 306 transitions. [2023-04-02 04:09:28,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-02 04:09:28,347 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (15), 4 states have call predecessors, (15), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 52 [2023-04-02 04:09:28,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 04:09:28,349 INFO L225 Difference]: With dead ends: 247 [2023-04-02 04:09:28,349 INFO L226 Difference]: Without dead ends: 158 [2023-04-02 04:09:28,349 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-04-02 04:09:28,350 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 132 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 328 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 381 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 328 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-02 04:09:28,351 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [149 Valid, 40 Invalid, 381 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 328 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-02 04:09:28,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2023-04-02 04:09:28,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 126. [2023-04-02 04:09:28,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 73 states have (on average 1.2602739726027397) internal successors, (92), 83 states have internal predecessors, (92), 30 states have call successors, (30), 26 states have call predecessors, (30), 22 states have return successors, (26), 22 states have call predecessors, (26), 26 states have call successors, (26) [2023-04-02 04:09:28,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 148 transitions. [2023-04-02 04:09:28,373 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 148 transitions. Word has length 52 [2023-04-02 04:09:28,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 04:09:28,373 INFO L495 AbstractCegarLoop]: Abstraction has 126 states and 148 transitions. [2023-04-02 04:09:28,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (15), 4 states have call predecessors, (15), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-04-02 04:09:28,374 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 148 transitions. [2023-04-02 04:09:28,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-04-02 04:09:28,375 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 04:09:28,375 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 04:09:28,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-02 04:09:28,375 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 04:09:28,376 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 04:09:28,376 INFO L85 PathProgramCache]: Analyzing trace with hash 1414752130, now seen corresponding path program 1 times [2023-04-02 04:09:28,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 04:09:28,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167015040] [2023-04-02 04:09:28,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 04:09:28,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 04:09:28,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:09:28,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 04:09:28,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:09:28,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 04:09:28,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:09:28,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-04-02 04:09:28,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:09:28,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-04-02 04:09:28,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:09:28,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-04-02 04:09:28,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:09:28,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-04-02 04:09:28,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:09:28,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-04-02 04:09:28,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:09:28,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-04-02 04:09:28,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:09:28,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 04:09:28,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 04:09:28,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167015040] [2023-04-02 04:09:28,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [167015040] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 04:09:28,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 04:09:28,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-02 04:09:28,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512726923] [2023-04-02 04:09:28,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 04:09:28,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-02 04:09:28,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 04:09:28,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-02 04:09:28,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-04-02 04:09:28,545 INFO L87 Difference]: Start difference. First operand 126 states and 148 transitions. Second operand has 9 states, 9 states have (on average 3.7777777777777777) internal successors, (34), 6 states have internal predecessors, (34), 4 states have call successors, (14), 6 states have call predecessors, (14), 3 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-04-02 04:09:29,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 04:09:29,016 INFO L93 Difference]: Finished difference Result 256 states and 321 transitions. [2023-04-02 04:09:29,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-04-02 04:09:29,017 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.7777777777777777) internal successors, (34), 6 states have internal predecessors, (34), 4 states have call successors, (14), 6 states have call predecessors, (14), 3 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 56 [2023-04-02 04:09:29,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 04:09:29,019 INFO L225 Difference]: With dead ends: 256 [2023-04-02 04:09:29,019 INFO L226 Difference]: Without dead ends: 158 [2023-04-02 04:09:29,019 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2023-04-02 04:09:29,020 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 220 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 632 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 222 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 758 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 632 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-02 04:09:29,021 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [222 Valid, 49 Invalid, 758 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 632 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-02 04:09:29,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2023-04-02 04:09:29,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 126. [2023-04-02 04:09:29,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 73 states have (on average 1.2465753424657535) internal successors, (91), 82 states have internal predecessors, (91), 30 states have call successors, (30), 26 states have call predecessors, (30), 22 states have return successors, (26), 22 states have call predecessors, (26), 26 states have call successors, (26) [2023-04-02 04:09:29,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 147 transitions. [2023-04-02 04:09:29,047 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 147 transitions. Word has length 56 [2023-04-02 04:09:29,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 04:09:29,048 INFO L495 AbstractCegarLoop]: Abstraction has 126 states and 147 transitions. [2023-04-02 04:09:29,049 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.7777777777777777) internal successors, (34), 6 states have internal predecessors, (34), 4 states have call successors, (14), 6 states have call predecessors, (14), 3 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-04-02 04:09:29,049 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 147 transitions. [2023-04-02 04:09:29,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-04-02 04:09:29,053 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 04:09:29,054 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 04:09:29,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-02 04:09:29,054 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 04:09:29,055 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 04:09:29,055 INFO L85 PathProgramCache]: Analyzing trace with hash 932951047, now seen corresponding path program 1 times [2023-04-02 04:09:29,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 04:09:29,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774144904] [2023-04-02 04:09:29,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 04:09:29,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 04:09:29,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:09:29,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 04:09:29,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:09:29,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 04:09:29,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:09:29,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-04-02 04:09:29,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:09:29,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-04-02 04:09:29,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:09:29,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-04-02 04:09:29,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:09:29,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-04-02 04:09:29,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:09:29,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-04-02 04:09:29,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:09:29,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-04-02 04:09:29,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:09:29,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-04-02 04:09:29,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:09:29,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-04-02 04:09:29,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:09:29,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-04-02 04:09:29,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:09:29,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 04:09:29,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 04:09:29,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774144904] [2023-04-02 04:09:29,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1774144904] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 04:09:29,239 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 04:09:29,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-02 04:09:29,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057173810] [2023-04-02 04:09:29,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 04:09:29,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-02 04:09:29,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 04:09:29,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-02 04:09:29,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-04-02 04:09:29,240 INFO L87 Difference]: Start difference. First operand 126 states and 147 transitions. Second operand has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 5 states have internal predecessors, (41), 4 states have call successors, (17), 6 states have call predecessors, (17), 4 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) [2023-04-02 04:09:29,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 04:09:29,735 INFO L93 Difference]: Finished difference Result 355 states and 448 transitions. [2023-04-02 04:09:29,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-02 04:09:29,735 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 5 states have internal predecessors, (41), 4 states have call successors, (17), 6 states have call predecessors, (17), 4 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) Word has length 69 [2023-04-02 04:09:29,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 04:09:29,737 INFO L225 Difference]: With dead ends: 355 [2023-04-02 04:09:29,737 INFO L226 Difference]: Without dead ends: 257 [2023-04-02 04:09:29,738 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2023-04-02 04:09:29,739 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 437 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 524 mSolverCounterSat, 267 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 441 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 791 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 267 IncrementalHoareTripleChecker+Valid, 524 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-02 04:09:29,739 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [441 Valid, 109 Invalid, 791 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [267 Valid, 524 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-02 04:09:29,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2023-04-02 04:09:29,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 211. [2023-04-02 04:09:29,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 211 states, 127 states have (on average 1.220472440944882) internal successors, (155), 135 states have internal predecessors, (155), 42 states have call successors, (42), 39 states have call predecessors, (42), 41 states have return successors, (46), 41 states have call predecessors, (46), 38 states have call successors, (46) [2023-04-02 04:09:29,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 243 transitions. [2023-04-02 04:09:29,768 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 243 transitions. Word has length 69 [2023-04-02 04:09:29,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 04:09:29,768 INFO L495 AbstractCegarLoop]: Abstraction has 211 states and 243 transitions. [2023-04-02 04:09:29,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 5 states have internal predecessors, (41), 4 states have call successors, (17), 6 states have call predecessors, (17), 4 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) [2023-04-02 04:09:29,769 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 243 transitions. [2023-04-02 04:09:29,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-04-02 04:09:29,769 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 04:09:29,769 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 04:09:29,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-04-02 04:09:29,770 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 04:09:29,770 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 04:09:29,770 INFO L85 PathProgramCache]: Analyzing trace with hash 1787182623, now seen corresponding path program 1 times [2023-04-02 04:09:29,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 04:09:29,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847495419] [2023-04-02 04:09:29,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 04:09:29,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 04:09:29,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:09:29,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 04:09:29,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:09:29,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 04:09:29,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:09:29,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-04-02 04:09:29,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:09:29,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-04-02 04:09:29,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:09:29,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-04-02 04:09:29,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:09:29,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-04-02 04:09:29,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:09:29,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-04-02 04:09:29,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:09:29,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-04-02 04:09:29,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:09:29,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-04-02 04:09:29,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:09:29,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 04:09:29,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:09:29,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-04-02 04:09:29,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:09:29,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-04-02 04:09:29,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:09:29,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-04-02 04:09:29,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:09:29,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 04:09:29,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 04:09:29,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847495419] [2023-04-02 04:09:29,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1847495419] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 04:09:29,995 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 04:09:29,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-02 04:09:29,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530691631] [2023-04-02 04:09:29,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 04:09:29,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-02 04:09:29,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 04:09:30,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-02 04:09:30,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-04-02 04:09:30,000 INFO L87 Difference]: Start difference. First operand 211 states and 243 transitions. Second operand has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 5 states have internal predecessors, (51), 3 states have call successors, (19), 6 states have call predecessors, (19), 3 states have return successors, (13), 4 states have call predecessors, (13), 3 states have call successors, (13) [2023-04-02 04:09:30,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 04:09:30,711 INFO L93 Difference]: Finished difference Result 624 states and 785 transitions. [2023-04-02 04:09:30,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-04-02 04:09:30,711 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 5 states have internal predecessors, (51), 3 states have call successors, (19), 6 states have call predecessors, (19), 3 states have return successors, (13), 4 states have call predecessors, (13), 3 states have call successors, (13) Word has length 83 [2023-04-02 04:09:30,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 04:09:30,714 INFO L225 Difference]: With dead ends: 624 [2023-04-02 04:09:30,714 INFO L226 Difference]: Without dead ends: 441 [2023-04-02 04:09:30,715 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=105, Invalid=275, Unknown=0, NotChecked=0, Total=380 [2023-04-02 04:09:30,716 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 419 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 779 mSolverCounterSat, 248 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 433 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 1027 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 248 IncrementalHoareTripleChecker+Valid, 779 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-02 04:09:30,716 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [433 Valid, 106 Invalid, 1027 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [248 Valid, 779 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-02 04:09:30,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 441 states. [2023-04-02 04:09:30,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 441 to 370. [2023-04-02 04:09:30,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 370 states, 225 states have (on average 1.2) internal successors, (270), 240 states have internal predecessors, (270), 71 states have call successors, (71), 65 states have call predecessors, (71), 73 states have return successors, (85), 73 states have call predecessors, (85), 67 states have call successors, (85) [2023-04-02 04:09:30,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 370 states to 370 states and 426 transitions. [2023-04-02 04:09:30,762 INFO L78 Accepts]: Start accepts. Automaton has 370 states and 426 transitions. Word has length 83 [2023-04-02 04:09:30,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 04:09:30,762 INFO L495 AbstractCegarLoop]: Abstraction has 370 states and 426 transitions. [2023-04-02 04:09:30,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 5 states have internal predecessors, (51), 3 states have call successors, (19), 6 states have call predecessors, (19), 3 states have return successors, (13), 4 states have call predecessors, (13), 3 states have call successors, (13) [2023-04-02 04:09:30,763 INFO L276 IsEmpty]: Start isEmpty. Operand 370 states and 426 transitions. [2023-04-02 04:09:30,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-04-02 04:09:30,764 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 04:09:30,764 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 04:09:30,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-04-02 04:09:30,764 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 04:09:30,764 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 04:09:30,764 INFO L85 PathProgramCache]: Analyzing trace with hash 540124163, now seen corresponding path program 1 times [2023-04-02 04:09:30,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 04:09:30,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103852011] [2023-04-02 04:09:30,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 04:09:30,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 04:09:30,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:09:30,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 04:09:30,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:09:30,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 04:09:30,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:09:30,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-04-02 04:09:30,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:09:30,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-04-02 04:09:30,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:09:30,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-04-02 04:09:30,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:09:30,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-04-02 04:09:30,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:09:30,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-04-02 04:09:30,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:09:30,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-04-02 04:09:30,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:09:30,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-04-02 04:09:30,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:09:30,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-04-02 04:09:30,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:09:30,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 04:09:30,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:09:30,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-04-02 04:09:30,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:09:30,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-04-02 04:09:30,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:09:30,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-04-02 04:09:30,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:09:30,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 04:09:30,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 04:09:30,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103852011] [2023-04-02 04:09:30,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [103852011] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 04:09:30,940 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 04:09:30,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-04-02 04:09:30,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799948352] [2023-04-02 04:09:30,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 04:09:30,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-04-02 04:09:30,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 04:09:30,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-04-02 04:09:30,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2023-04-02 04:09:30,942 INFO L87 Difference]: Start difference. First operand 370 states and 426 transitions. Second operand has 10 states, 10 states have (on average 5.3) internal successors, (53), 5 states have internal predecessors, (53), 3 states have call successors, (20), 7 states have call predecessors, (20), 3 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) [2023-04-02 04:09:31,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 04:09:31,718 INFO L93 Difference]: Finished difference Result 818 states and 1011 transitions. [2023-04-02 04:09:31,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-04-02 04:09:31,718 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.3) internal successors, (53), 5 states have internal predecessors, (53), 3 states have call successors, (20), 7 states have call predecessors, (20), 3 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) Word has length 87 [2023-04-02 04:09:31,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 04:09:31,721 INFO L225 Difference]: With dead ends: 818 [2023-04-02 04:09:31,721 INFO L226 Difference]: Without dead ends: 476 [2023-04-02 04:09:31,722 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=194, Invalid=508, Unknown=0, NotChecked=0, Total=702 [2023-04-02 04:09:31,723 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 299 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 904 mSolverCounterSat, 139 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 310 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 1043 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 139 IncrementalHoareTripleChecker+Valid, 904 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-02 04:09:31,723 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [310 Valid, 124 Invalid, 1043 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [139 Valid, 904 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-02 04:09:31,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 476 states. [2023-04-02 04:09:31,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 476 to 369. [2023-04-02 04:09:31,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 369 states, 224 states have (on average 1.1919642857142858) internal successors, (267), 239 states have internal predecessors, (267), 71 states have call successors, (71), 65 states have call predecessors, (71), 73 states have return successors, (85), 73 states have call predecessors, (85), 67 states have call successors, (85) [2023-04-02 04:09:31,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 369 states to 369 states and 423 transitions. [2023-04-02 04:09:31,757 INFO L78 Accepts]: Start accepts. Automaton has 369 states and 423 transitions. Word has length 87 [2023-04-02 04:09:31,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 04:09:31,758 INFO L495 AbstractCegarLoop]: Abstraction has 369 states and 423 transitions. [2023-04-02 04:09:31,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.3) internal successors, (53), 5 states have internal predecessors, (53), 3 states have call successors, (20), 7 states have call predecessors, (20), 3 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) [2023-04-02 04:09:31,758 INFO L276 IsEmpty]: Start isEmpty. Operand 369 states and 423 transitions. [2023-04-02 04:09:31,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-04-02 04:09:31,759 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 04:09:31,759 INFO L195 NwaCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 04:09:31,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-04-02 04:09:31,759 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 04:09:31,760 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 04:09:31,760 INFO L85 PathProgramCache]: Analyzing trace with hash 1484656909, now seen corresponding path program 1 times [2023-04-02 04:09:31,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 04:09:31,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16609832] [2023-04-02 04:09:31,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 04:09:31,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 04:09:31,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:09:31,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 04:09:31,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:09:31,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 04:09:31,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:09:31,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-04-02 04:09:31,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:09:31,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-04-02 04:09:31,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:09:31,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-04-02 04:09:31,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:09:31,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-04-02 04:09:31,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:09:31,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-04-02 04:09:31,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:09:31,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-04-02 04:09:31,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:09:31,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-04-02 04:09:31,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:09:31,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-04-02 04:09:31,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:09:31,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 04:09:31,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:09:31,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-04-02 04:09:31,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:09:31,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 04:09:31,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:09:31,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 04:09:31,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:09:31,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-04-02 04:09:31,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:09:31,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-04-02 04:09:31,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:09:31,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-04-02 04:09:31,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:09:31,938 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-04-02 04:09:31,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 04:09:31,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16609832] [2023-04-02 04:09:31,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [16609832] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 04:09:31,938 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 04:09:31,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-04-02 04:09:31,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821782447] [2023-04-02 04:09:31,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 04:09:31,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-04-02 04:09:31,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 04:09:31,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-04-02 04:09:31,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2023-04-02 04:09:31,940 INFO L87 Difference]: Start difference. First operand 369 states and 423 transitions. Second operand has 10 states, 10 states have (on average 6.1) internal successors, (61), 5 states have internal predecessors, (61), 2 states have call successors, (23), 6 states have call predecessors, (23), 3 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) [2023-04-02 04:09:32,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 04:09:32,477 INFO L93 Difference]: Finished difference Result 825 states and 1040 transitions. [2023-04-02 04:09:32,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-04-02 04:09:32,478 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.1) internal successors, (61), 5 states have internal predecessors, (61), 2 states have call successors, (23), 6 states have call predecessors, (23), 3 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) Word has length 103 [2023-04-02 04:09:32,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 04:09:32,480 INFO L225 Difference]: With dead ends: 825 [2023-04-02 04:09:32,480 INFO L226 Difference]: Without dead ends: 484 [2023-04-02 04:09:32,481 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2023-04-02 04:09:32,482 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 434 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 808 mSolverCounterSat, 251 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 452 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 1059 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 251 IncrementalHoareTripleChecker+Valid, 808 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-02 04:09:32,482 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [452 Valid, 96 Invalid, 1059 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [251 Valid, 808 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-02 04:09:32,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 484 states. [2023-04-02 04:09:32,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 484 to 379. [2023-04-02 04:09:32,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 379 states, 232 states have (on average 1.1853448275862069) internal successors, (275), 247 states have internal predecessors, (275), 71 states have call successors, (71), 65 states have call predecessors, (71), 75 states have return successors, (87), 75 states have call predecessors, (87), 67 states have call successors, (87) [2023-04-02 04:09:32,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 433 transitions. [2023-04-02 04:09:32,515 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 433 transitions. Word has length 103 [2023-04-02 04:09:32,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 04:09:32,515 INFO L495 AbstractCegarLoop]: Abstraction has 379 states and 433 transitions. [2023-04-02 04:09:32,516 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.1) internal successors, (61), 5 states have internal predecessors, (61), 2 states have call successors, (23), 6 states have call predecessors, (23), 3 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) [2023-04-02 04:09:32,516 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 433 transitions. [2023-04-02 04:09:32,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-04-02 04:09:32,517 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 04:09:32,517 INFO L195 NwaCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 04:09:32,517 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-04-02 04:09:32,517 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 04:09:32,517 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 04:09:32,518 INFO L85 PathProgramCache]: Analyzing trace with hash -882037685, now seen corresponding path program 1 times [2023-04-02 04:09:32,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 04:09:32,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103424232] [2023-04-02 04:09:32,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 04:09:32,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 04:09:32,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:09:32,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 04:09:32,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:09:32,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 04:09:32,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:09:32,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-04-02 04:09:32,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:09:32,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-04-02 04:09:32,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:09:32,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-04-02 04:09:32,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:09:32,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-04-02 04:09:32,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:09:32,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-04-02 04:09:32,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:09:32,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-04-02 04:09:32,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:09:32,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-04-02 04:09:32,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:09:32,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-04-02 04:09:32,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:09:32,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 04:09:32,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:09:32,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-04-02 04:09:32,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:09:32,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 04:09:32,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:09:32,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 04:09:32,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:09:32,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-04-02 04:09:32,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:09:32,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-04-02 04:09:32,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:09:32,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-04-02 04:09:32,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:09:32,690 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-04-02 04:09:32,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 04:09:32,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103424232] [2023-04-02 04:09:32,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [103424232] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 04:09:32,690 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 04:09:32,690 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-04-02 04:09:32,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082034649] [2023-04-02 04:09:32,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 04:09:32,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-02 04:09:32,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 04:09:32,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-02 04:09:32,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2023-04-02 04:09:32,692 INFO L87 Difference]: Start difference. First operand 379 states and 433 transitions. Second operand has 12 states, 12 states have (on average 5.083333333333333) internal successors, (61), 6 states have internal predecessors, (61), 2 states have call successors, (23), 6 states have call predecessors, (23), 4 states have return successors, (17), 4 states have call predecessors, (17), 2 states have call successors, (17) [2023-04-02 04:09:33,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 04:09:33,411 INFO L93 Difference]: Finished difference Result 845 states and 1062 transitions. [2023-04-02 04:09:33,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-02 04:09:33,411 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.083333333333333) internal successors, (61), 6 states have internal predecessors, (61), 2 states have call successors, (23), 6 states have call predecessors, (23), 4 states have return successors, (17), 4 states have call predecessors, (17), 2 states have call successors, (17) Word has length 103 [2023-04-02 04:09:33,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 04:09:33,415 INFO L225 Difference]: With dead ends: 845 [2023-04-02 04:09:33,415 INFO L226 Difference]: Without dead ends: 494 [2023-04-02 04:09:33,416 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2023-04-02 04:09:33,417 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 434 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 1101 mSolverCounterSat, 248 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 453 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 1349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 248 IncrementalHoareTripleChecker+Valid, 1101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-02 04:09:33,418 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [453 Valid, 108 Invalid, 1349 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [248 Valid, 1101 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-02 04:09:33,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 494 states. [2023-04-02 04:09:33,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 494 to 387. [2023-04-02 04:09:33,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 238 states have (on average 1.180672268907563) internal successors, (281), 253 states have internal predecessors, (281), 71 states have call successors, (71), 65 states have call predecessors, (71), 77 states have return successors, (89), 77 states have call predecessors, (89), 67 states have call successors, (89) [2023-04-02 04:09:33,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 441 transitions. [2023-04-02 04:09:33,453 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 441 transitions. Word has length 103 [2023-04-02 04:09:33,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 04:09:33,454 INFO L495 AbstractCegarLoop]: Abstraction has 387 states and 441 transitions. [2023-04-02 04:09:33,454 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.083333333333333) internal successors, (61), 6 states have internal predecessors, (61), 2 states have call successors, (23), 6 states have call predecessors, (23), 4 states have return successors, (17), 4 states have call predecessors, (17), 2 states have call successors, (17) [2023-04-02 04:09:33,454 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 441 transitions. [2023-04-02 04:09:33,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-04-02 04:09:33,456 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 04:09:33,456 INFO L195 NwaCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 04:09:33,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-04-02 04:09:33,456 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 04:09:33,457 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 04:09:33,457 INFO L85 PathProgramCache]: Analyzing trace with hash -1122577814, now seen corresponding path program 1 times [2023-04-02 04:09:33,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 04:09:33,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078583383] [2023-04-02 04:09:33,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 04:09:33,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 04:09:33,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:09:33,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 04:09:33,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:09:33,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 04:09:33,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:09:33,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-04-02 04:09:33,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:09:33,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-04-02 04:09:33,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:09:33,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-04-02 04:09:33,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:09:33,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-04-02 04:09:33,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:09:33,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-04-02 04:09:33,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:09:33,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-04-02 04:09:33,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:09:33,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-04-02 04:09:33,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:09:33,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-04-02 04:09:33,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:09:33,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 04:09:33,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:09:33,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-04-02 04:09:33,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:09:33,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 04:09:33,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:09:33,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 04:09:33,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:09:33,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-04-02 04:09:33,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:09:33,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-04-02 04:09:33,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:09:33,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-04-02 04:09:33,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:09:33,656 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-04-02 04:09:33,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 04:09:33,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078583383] [2023-04-02 04:09:33,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2078583383] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 04:09:33,656 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 04:09:33,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-04-02 04:09:33,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985711315] [2023-04-02 04:09:33,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 04:09:33,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-02 04:09:33,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 04:09:33,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-02 04:09:33,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-04-02 04:09:33,658 INFO L87 Difference]: Start difference. First operand 387 states and 441 transitions. Second operand has 8 states, 8 states have (on average 7.625) internal successors, (61), 4 states have internal predecessors, (61), 4 states have call successors, (23), 7 states have call predecessors, (23), 3 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) [2023-04-02 04:09:34,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 04:09:34,364 INFO L93 Difference]: Finished difference Result 1164 states and 1513 transitions. [2023-04-02 04:09:34,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-04-02 04:09:34,364 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 4 states have internal predecessors, (61), 4 states have call successors, (23), 7 states have call predecessors, (23), 3 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) Word has length 103 [2023-04-02 04:09:34,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 04:09:34,368 INFO L225 Difference]: With dead ends: 1164 [2023-04-02 04:09:34,368 INFO L226 Difference]: Without dead ends: 805 [2023-04-02 04:09:34,370 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 42 SyntacticMatches, 3 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=134, Invalid=372, Unknown=0, NotChecked=0, Total=506 [2023-04-02 04:09:34,370 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 899 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 530 mSolverCounterSat, 543 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 911 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 1073 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 543 IncrementalHoareTripleChecker+Valid, 530 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-02 04:09:34,370 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [911 Valid, 146 Invalid, 1073 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [543 Valid, 530 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-02 04:09:34,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 805 states. [2023-04-02 04:09:34,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 805 to 673. [2023-04-02 04:09:34,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 673 states, 428 states have (on average 1.1728971962616823) internal successors, (502), 455 states have internal predecessors, (502), 121 states have call successors, (121), 115 states have call predecessors, (121), 123 states have return successors, (172), 121 states have call predecessors, (172), 117 states have call successors, (172) [2023-04-02 04:09:34,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 673 states to 673 states and 795 transitions. [2023-04-02 04:09:34,450 INFO L78 Accepts]: Start accepts. Automaton has 673 states and 795 transitions. Word has length 103 [2023-04-02 04:09:34,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 04:09:34,451 INFO L495 AbstractCegarLoop]: Abstraction has 673 states and 795 transitions. [2023-04-02 04:09:34,451 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 4 states have internal predecessors, (61), 4 states have call successors, (23), 7 states have call predecessors, (23), 3 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) [2023-04-02 04:09:34,451 INFO L276 IsEmpty]: Start isEmpty. Operand 673 states and 795 transitions. [2023-04-02 04:09:34,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2023-04-02 04:09:34,452 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 04:09:34,452 INFO L195 NwaCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 04:09:34,452 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-04-02 04:09:34,452 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 04:09:34,453 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 04:09:34,453 INFO L85 PathProgramCache]: Analyzing trace with hash 1655947376, now seen corresponding path program 1 times [2023-04-02 04:09:34,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 04:09:34,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757257080] [2023-04-02 04:09:34,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 04:09:34,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 04:09:34,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:09:34,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 04:09:34,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:09:34,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 04:09:34,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:09:34,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-04-02 04:09:34,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:09:34,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-04-02 04:09:34,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:09:34,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-04-02 04:09:34,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:09:34,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-04-02 04:09:34,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:09:34,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-04-02 04:09:34,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:09:34,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-04-02 04:09:34,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:09:34,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-04-02 04:09:34,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:09:34,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-04-02 04:09:34,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:09:34,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-04-02 04:09:34,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:09:34,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 04:09:34,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:09:34,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-04-02 04:09:34,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:09:34,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 04:09:34,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:09:34,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 04:09:34,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:09:34,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-04-02 04:09:34,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:09:34,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-04-02 04:09:34,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:09:34,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-04-02 04:09:34,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:09:34,757 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-04-02 04:09:34,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 04:09:34,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757257080] [2023-04-02 04:09:34,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [757257080] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 04:09:34,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [426378592] [2023-04-02 04:09:34,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 04:09:34,758 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 04:09:34,758 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 04:09:34,775 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) [2023-04-02 04:09:34,780 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-04-02 04:09:34,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:09:34,885 INFO L262 TraceCheckSpWp]: Trace formula consists of 422 conjuncts, 9 conjunts are in the unsatisfiable core [2023-04-02 04:09:34,895 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 04:09:35,068 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 04:09:35,069 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-02 04:09:35,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [426378592] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 04:09:35,069 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-02 04:09:35,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [18] total 23 [2023-04-02 04:09:35,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768359961] [2023-04-02 04:09:35,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 04:09:35,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-02 04:09:35,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 04:09:35,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-02 04:09:35,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=446, Unknown=0, NotChecked=0, Total=506 [2023-04-02 04:09:35,070 INFO L87 Difference]: Start difference. First operand 673 states and 795 transitions. Second operand has 8 states, 8 states have (on average 8.125) internal successors, (65), 6 states have internal predecessors, (65), 3 states have call successors, (24), 3 states have call predecessors, (24), 5 states have return successors, (18), 5 states have call predecessors, (18), 3 states have call successors, (18) [2023-04-02 04:09:35,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 04:09:35,254 INFO L93 Difference]: Finished difference Result 1283 states and 1526 transitions. [2023-04-02 04:09:35,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-04-02 04:09:35,254 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.125) internal successors, (65), 6 states have internal predecessors, (65), 3 states have call successors, (24), 3 states have call predecessors, (24), 5 states have return successors, (18), 5 states have call predecessors, (18), 3 states have call successors, (18) Word has length 107 [2023-04-02 04:09:35,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 04:09:35,257 INFO L225 Difference]: With dead ends: 1283 [2023-04-02 04:09:35,257 INFO L226 Difference]: Without dead ends: 638 [2023-04-02 04:09:35,259 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=60, Invalid=446, Unknown=0, NotChecked=0, Total=506 [2023-04-02 04:09:35,259 INFO L413 NwaCegarLoop]: 241 mSDtfsCounter, 70 mSDsluCounter, 1115 mSDsCounter, 0 mSdLazyCounter, 245 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 1356 SdHoareTripleChecker+Invalid, 246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 245 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-02 04:09:35,260 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 1356 Invalid, 246 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 245 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-02 04:09:35,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 638 states. [2023-04-02 04:09:35,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 638 to 638. [2023-04-02 04:09:35,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 638 states, 406 states have (on average 1.1576354679802956) internal successors, (470), 432 states have internal predecessors, (470), 116 states have call successors, (116), 110 states have call predecessors, (116), 115 states have return successors, (153), 113 states have call predecessors, (153), 112 states have call successors, (153) [2023-04-02 04:09:35,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 638 states to 638 states and 739 transitions. [2023-04-02 04:09:35,352 INFO L78 Accepts]: Start accepts. Automaton has 638 states and 739 transitions. Word has length 107 [2023-04-02 04:09:35,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 04:09:35,352 INFO L495 AbstractCegarLoop]: Abstraction has 638 states and 739 transitions. [2023-04-02 04:09:35,353 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.125) internal successors, (65), 6 states have internal predecessors, (65), 3 states have call successors, (24), 3 states have call predecessors, (24), 5 states have return successors, (18), 5 states have call predecessors, (18), 3 states have call successors, (18) [2023-04-02 04:09:35,353 INFO L276 IsEmpty]: Start isEmpty. Operand 638 states and 739 transitions. [2023-04-02 04:09:35,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2023-04-02 04:09:35,355 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 04:09:35,356 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 04:09:35,366 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-04-02 04:09:35,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-04-02 04:09:35,564 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 04:09:35,565 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 04:09:35,565 INFO L85 PathProgramCache]: Analyzing trace with hash 94917894, now seen corresponding path program 1 times [2023-04-02 04:09:35,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 04:09:35,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825483261] [2023-04-02 04:09:35,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 04:09:35,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 04:09:35,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:09:35,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 04:09:35,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:09:35,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 04:09:35,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:09:35,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-04-02 04:09:35,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:09:35,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-04-02 04:09:35,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:09:35,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-04-02 04:09:35,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:09:35,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-04-02 04:09:35,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:09:35,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-04-02 04:09:35,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:09:35,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-04-02 04:09:35,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:09:35,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-04-02 04:09:35,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:09:35,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-04-02 04:09:35,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:09:35,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-04-02 04:09:35,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:09:35,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 04:09:35,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:09:35,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-04-02 04:09:35,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:09:35,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 04:09:35,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:09:35,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 04:09:35,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:09:35,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-04-02 04:09:35,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:09:35,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-04-02 04:09:35,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:09:35,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 04:09:35,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:09:35,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-04-02 04:09:35,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:09:35,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2023-04-02 04:09:35,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:09:35,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-04-02 04:09:35,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:09:35,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-04-02 04:09:35,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:09:35,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 04:09:35,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:09:35,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-04-02 04:09:35,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:09:35,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-04-02 04:09:35,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:09:35,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2023-04-02 04:09:35,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:09:35,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2023-04-02 04:09:35,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:09:35,842 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 19 proven. 3 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-04-02 04:09:35,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 04:09:35,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825483261] [2023-04-02 04:09:35,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1825483261] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 04:09:35,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1701408708] [2023-04-02 04:09:35,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 04:09:35,843 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 04:09:35,843 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 04:09:35,859 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 04:09:35,860 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-04-02 04:09:35,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:09:35,983 INFO L262 TraceCheckSpWp]: Trace formula consists of 546 conjuncts, 9 conjunts are in the unsatisfiable core [2023-04-02 04:09:35,995 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 04:09:36,121 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-04-02 04:09:36,121 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-02 04:09:36,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1701408708] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 04:09:36,121 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-02 04:09:36,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [19] total 24 [2023-04-02 04:09:36,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047594121] [2023-04-02 04:09:36,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 04:09:36,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-02 04:09:36,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 04:09:36,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-02 04:09:36,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=488, Unknown=0, NotChecked=0, Total=552 [2023-04-02 04:09:36,123 INFO L87 Difference]: Start difference. First operand 638 states and 739 transitions. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 6 states have internal predecessors, (92), 3 states have call successors, (33), 3 states have call predecessors, (33), 5 states have return successors, (27), 5 states have call predecessors, (27), 3 states have call successors, (27) [2023-04-02 04:09:36,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 04:09:36,265 INFO L93 Difference]: Finished difference Result 1073 states and 1261 transitions. [2023-04-02 04:09:36,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-04-02 04:09:36,265 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 6 states have internal predecessors, (92), 3 states have call successors, (33), 3 states have call predecessors, (33), 5 states have return successors, (27), 5 states have call predecessors, (27), 3 states have call successors, (27) Word has length 158 [2023-04-02 04:09:36,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 04:09:36,266 INFO L225 Difference]: With dead ends: 1073 [2023-04-02 04:09:36,266 INFO L226 Difference]: Without dead ends: 0 [2023-04-02 04:09:36,268 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=488, Unknown=0, NotChecked=0, Total=552 [2023-04-02 04:09:36,269 INFO L413 NwaCegarLoop]: 231 mSDtfsCounter, 74 mSDsluCounter, 702 mSDsCounter, 0 mSdLazyCounter, 214 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 933 SdHoareTripleChecker+Invalid, 215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-02 04:09:36,269 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 933 Invalid, 215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 214 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-02 04:09:36,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-04-02 04:09:36,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-04-02 04:09:36,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-04-02 04:09:36,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-04-02 04:09:36,269 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 158 [2023-04-02 04:09:36,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 04:09:36,270 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-04-02 04:09:36,270 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 6 states have internal predecessors, (92), 3 states have call successors, (33), 3 states have call predecessors, (33), 5 states have return successors, (27), 5 states have call predecessors, (27), 3 states have call successors, (27) [2023-04-02 04:09:36,270 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-04-02 04:09:36,270 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-04-02 04:09:36,272 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-04-02 04:09:36,291 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-04-02 04:09:36,482 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-04-02 04:09:36,484 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-04-02 04:10:35,514 WARN L223 SmtUtils]: Spent 56.65s on a formula simplification. DAG size of input: 104 DAG size of output: 188 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2023-04-02 04:14:04,435 WARN L223 SmtUtils]: Spent 3.48m on a formula simplification. DAG size of input: 112 DAG size of output: 266 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or)