/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_product37.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-03-31 01:10:51,795 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-03-31 01:10:51,796 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-03-31 01:10:51,822 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-03-31 01:10:51,823 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-03-31 01:10:51,823 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-03-31 01:10:51,824 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-03-31 01:10:51,825 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-03-31 01:10:51,827 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-03-31 01:10:51,827 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-03-31 01:10:51,828 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-03-31 01:10:51,841 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-03-31 01:10:51,841 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-03-31 01:10:51,842 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-03-31 01:10:51,843 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-03-31 01:10:51,844 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-03-31 01:10:51,844 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-03-31 01:10:51,845 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-03-31 01:10:51,847 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-03-31 01:10:51,851 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-03-31 01:10:51,855 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-03-31 01:10:51,861 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-03-31 01:10:51,862 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-03-31 01:10:51,862 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-03-31 01:10:51,865 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-03-31 01:10:51,866 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-03-31 01:10:51,866 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-03-31 01:10:51,866 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-03-31 01:10:51,867 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-03-31 01:10:51,867 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-03-31 01:10:51,867 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-03-31 01:10:51,868 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-03-31 01:10:51,868 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-03-31 01:10:51,873 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-03-31 01:10:51,874 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-03-31 01:10:51,874 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-03-31 01:10:51,875 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-03-31 01:10:51,875 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-03-31 01:10:51,875 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-03-31 01:10:51,875 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-03-31 01:10:51,876 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-03-31 01:10:51,878 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 [2023-03-31 01:10:51,921 INFO L113 SettingsManager]: Loading preferences was successful [2023-03-31 01:10:51,922 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-03-31 01:10:51,922 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-03-31 01:10:51,922 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-03-31 01:10:51,923 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-03-31 01:10:51,923 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-03-31 01:10:51,924 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-03-31 01:10:51,924 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-03-31 01:10:51,924 INFO L138 SettingsManager]: * Use SBE=true [2023-03-31 01:10:51,924 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-03-31 01:10:51,924 INFO L138 SettingsManager]: * sizeof long=4 [2023-03-31 01:10:51,925 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-03-31 01:10:51,925 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-03-31 01:10:51,925 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-03-31 01:10:51,925 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-03-31 01:10:51,925 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-03-31 01:10:51,925 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-03-31 01:10:51,925 INFO L138 SettingsManager]: * sizeof long double=12 [2023-03-31 01:10:51,925 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-03-31 01:10:51,925 INFO L138 SettingsManager]: * Use constant arrays=true [2023-03-31 01:10:51,925 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-03-31 01:10:51,925 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-03-31 01:10:51,925 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-03-31 01:10:51,926 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-03-31 01:10:51,926 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-31 01:10:51,926 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-03-31 01:10:51,926 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-03-31 01:10:51,926 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-03-31 01:10:51,926 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-03-31 01:10:51,926 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-03-31 01:10:51,926 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-03-31 01:10:51,926 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-03-31 01:10:51,926 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-03-31 01:10:51,927 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-03-31 01:10:51,927 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-03-31 01:10:51,927 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-03-31 01:10:52,269 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-03-31 01:10:52,290 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-03-31 01:10:52,292 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-03-31 01:10:52,293 INFO L271 PluginConnector]: Initializing CDTParser... [2023-03-31 01:10:52,309 INFO L275 PluginConnector]: CDTParser initialized [2023-03-31 01:10:52,310 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/minepump_spec2_product37.cil.c [2023-03-31 01:10:53,597 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-03-31 01:10:53,790 INFO L351 CDTParser]: Found 1 translation units. [2023-03-31 01:10:53,791 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec2_product37.cil.c [2023-03-31 01:10:53,799 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/556379512/34c0858a7da64894a711859b60660d44/FLAG5bbb7103d [2023-03-31 01:10:53,811 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/556379512/34c0858a7da64894a711859b60660d44 [2023-03-31 01:10:53,812 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-03-31 01:10:53,813 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-03-31 01:10:53,814 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-03-31 01:10:53,814 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-03-31 01:10:53,816 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-03-31 01:10:53,816 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.03 01:10:53" (1/1) ... [2023-03-31 01:10:53,817 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@568b3e31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:10:53, skipping insertion in model container [2023-03-31 01:10:53,817 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.03 01:10:53" (1/1) ... [2023-03-31 01:10:53,821 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-03-31 01:10:53,858 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-03-31 01:10:53,980 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_product37.cil.c[7021,7034] [2023-03-31 01:10:54,028 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-31 01:10:54,039 INFO L203 MainTranslator]: Completed pre-run [2023-03-31 01:10:54,059 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_product37.cil.c[7021,7034] [2023-03-31 01:10:54,082 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-31 01:10:54,098 INFO L208 MainTranslator]: Completed translation [2023-03-31 01:10:54,098 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:10:54 WrapperNode [2023-03-31 01:10:54,099 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-03-31 01:10:54,100 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-03-31 01:10:54,100 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-03-31 01:10:54,100 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-03-31 01:10:54,119 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:10:54" (1/1) ... [2023-03-31 01:10:54,119 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:10:54" (1/1) ... [2023-03-31 01:10:54,136 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:10:54" (1/1) ... [2023-03-31 01:10:54,136 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:10:54" (1/1) ... [2023-03-31 01:10:54,155 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:10:54" (1/1) ... [2023-03-31 01:10:54,159 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:10:54" (1/1) ... [2023-03-31 01:10:54,161 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:10:54" (1/1) ... [2023-03-31 01:10:54,163 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:10:54" (1/1) ... [2023-03-31 01:10:54,166 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-03-31 01:10:54,166 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-03-31 01:10:54,167 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-03-31 01:10:54,167 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-03-31 01:10:54,167 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:10:54" (1/1) ... [2023-03-31 01:10:54,171 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-31 01:10:54,179 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 01:10:54,195 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) [2023-03-31 01:10:54,215 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 [2023-03-31 01:10:54,237 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-03-31 01:10:54,237 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-03-31 01:10:54,237 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2023-03-31 01:10:54,237 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-03-31 01:10:54,237 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2023-03-31 01:10:54,237 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2023-03-31 01:10:54,237 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2023-03-31 01:10:54,237 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2023-03-31 01:10:54,238 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2023-03-31 01:10:54,238 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2023-03-31 01:10:54,238 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2023-03-31 01:10:54,238 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2023-03-31 01:10:54,238 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2023-03-31 01:10:54,238 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2023-03-31 01:10:54,238 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2023-03-31 01:10:54,238 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2023-03-31 01:10:54,238 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2023-03-31 01:10:54,238 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2023-03-31 01:10:54,238 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2023-03-31 01:10:54,238 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2023-03-31 01:10:54,239 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2023-03-31 01:10:54,239 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2023-03-31 01:10:54,239 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2023-03-31 01:10:54,239 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2023-03-31 01:10:54,239 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2023-03-31 01:10:54,239 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2023-03-31 01:10:54,239 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2023-03-31 01:10:54,239 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2023-03-31 01:10:54,239 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2023-03-31 01:10:54,239 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2023-03-31 01:10:54,239 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2023-03-31 01:10:54,239 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2023-03-31 01:10:54,240 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2023-03-31 01:10:54,240 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2023-03-31 01:10:54,240 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2023-03-31 01:10:54,240 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-03-31 01:10:54,240 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2023-03-31 01:10:54,240 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2023-03-31 01:10:54,240 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2023-03-31 01:10:54,240 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2023-03-31 01:10:54,240 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-03-31 01:10:54,240 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-03-31 01:10:54,240 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-03-31 01:10:54,241 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-03-31 01:10:54,241 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-03-31 01:10:54,241 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2023-03-31 01:10:54,241 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2023-03-31 01:10:54,241 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2023-03-31 01:10:54,241 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2023-03-31 01:10:54,241 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2023-03-31 01:10:54,241 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2023-03-31 01:10:54,241 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2023-03-31 01:10:54,241 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2023-03-31 01:10:54,241 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2023-03-31 01:10:54,242 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2023-03-31 01:10:54,242 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2023-03-31 01:10:54,242 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2023-03-31 01:10:54,242 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2023-03-31 01:10:54,242 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2023-03-31 01:10:54,242 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2023-03-31 01:10:54,242 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2023-03-31 01:10:54,242 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2023-03-31 01:10:54,242 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2023-03-31 01:10:54,242 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2023-03-31 01:10:54,242 INFO L130 BoogieDeclarations]: Found specification of procedure test [2023-03-31 01:10:54,243 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2023-03-31 01:10:54,243 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2023-03-31 01:10:54,243 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2023-03-31 01:10:54,243 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2023-03-31 01:10:54,243 INFO L130 BoogieDeclarations]: Found specification of procedure free [2023-03-31 01:10:54,243 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2023-03-31 01:10:54,243 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-03-31 01:10:54,243 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-03-31 01:10:54,243 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-03-31 01:10:54,243 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-03-31 01:10:54,243 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2023-03-31 01:10:54,243 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-03-31 01:10:54,244 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2023-03-31 01:10:54,244 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2023-03-31 01:10:54,244 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-03-31 01:10:54,244 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2023-03-31 01:10:54,244 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2023-03-31 01:10:54,244 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2023-03-31 01:10:54,244 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2023-03-31 01:10:54,244 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2023-03-31 01:10:54,244 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2023-03-31 01:10:54,244 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2023-03-31 01:10:54,244 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2023-03-31 01:10:54,244 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2023-03-31 01:10:54,245 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-03-31 01:10:54,245 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2023-03-31 01:10:54,245 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-03-31 01:10:54,245 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-03-31 01:10:54,245 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-03-31 01:10:54,346 INFO L236 CfgBuilder]: Building ICFG [2023-03-31 01:10:54,348 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-03-31 01:10:54,786 INFO L277 CfgBuilder]: Performing block encoding [2023-03-31 01:10:54,792 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-03-31 01:10:54,792 INFO L302 CfgBuilder]: Removed 5 assume(true) statements. [2023-03-31 01:10:54,794 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.03 01:10:54 BoogieIcfgContainer [2023-03-31 01:10:54,794 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-03-31 01:10:54,796 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-03-31 01:10:54,796 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-03-31 01:10:54,798 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-03-31 01:10:54,799 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.03 01:10:53" (1/3) ... [2023-03-31 01:10:54,799 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ac480a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.03 01:10:54, skipping insertion in model container [2023-03-31 01:10:54,799 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:10:54" (2/3) ... [2023-03-31 01:10:54,800 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ac480a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.03 01:10:54, skipping insertion in model container [2023-03-31 01:10:54,800 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.03 01:10:54" (3/3) ... [2023-03-31 01:10:54,801 INFO L112 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product37.cil.c [2023-03-31 01:10:54,814 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-03-31 01:10:54,814 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-03-31 01:10:54,866 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-03-31 01:10:54,872 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;@7e432ccb, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-03-31 01:10:54,872 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-03-31 01:10:54,875 INFO L276 IsEmpty]: Start isEmpty. Operand has 171 states, 94 states have (on average 1.3085106382978724) internal successors, (123), 106 states have internal predecessors, (123), 46 states have call successors, (46), 28 states have call predecessors, (46), 28 states have return successors, (46), 42 states have call predecessors, (46), 46 states have call successors, (46) [2023-03-31 01:10:54,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-03-31 01:10:54,886 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:10:54,886 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] [2023-03-31 01:10:54,887 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:10:54,890 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:10:54,891 INFO L85 PathProgramCache]: Analyzing trace with hash -1654106591, now seen corresponding path program 1 times [2023-03-31 01:10:54,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:10:54,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118716553] [2023-03-31 01:10:54,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:10:54,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:10:55,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:10:55,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:10:55,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:10:55,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-03-31 01:10:55,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:10:55,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-03-31 01:10:55,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:10:55,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-03-31 01:10:55,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:10:55,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-03-31 01:10:55,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:10:55,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-03-31 01:10:55,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:10:55,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-03-31 01:10:55,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:10:55,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-03-31 01:10:55,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:10:55,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 01:10:55,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:10:55,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118716553] [2023-03-31 01:10:55,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2118716553] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:10:55,191 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:10:55,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-03-31 01:10:55,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678310658] [2023-03-31 01:10:55,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:10:55,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-03-31 01:10:55,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:10:55,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-03-31 01:10:55,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-03-31 01:10:55,221 INFO L87 Difference]: Start difference. First operand has 171 states, 94 states have (on average 1.3085106382978724) internal successors, (123), 106 states have internal predecessors, (123), 46 states have call successors, (46), 28 states have call predecessors, (46), 28 states have return successors, (46), 42 states have call predecessors, (46), 46 states have call successors, (46) 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) [2023-03-31 01:10:55,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:10:55,512 INFO L93 Difference]: Finished difference Result 286 states and 375 transitions. [2023-03-31 01:10:55,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-03-31 01:10:55,514 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 [2023-03-31 01:10:55,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:10:55,520 INFO L225 Difference]: With dead ends: 286 [2023-03-31 01:10:55,520 INFO L226 Difference]: Without dead ends: 159 [2023-03-31 01:10:55,523 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 [2023-03-31 01:10:55,525 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 171 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 185 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 186 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-03-31 01:10:55,525 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [186 Valid, 62 Invalid, 286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 185 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-03-31 01:10:55,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2023-03-31 01:10:55,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 128. [2023-03-31 01:10:55,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 75 states have (on average 1.2533333333333334) internal successors, (94), 84 states have internal predecessors, (94), 31 states have call successors, (31), 26 states have call predecessors, (31), 21 states have return successors, (26), 22 states have call predecessors, (26), 26 states have call successors, (26) [2023-03-31 01:10:55,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 151 transitions. [2023-03-31 01:10:55,571 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 151 transitions. Word has length 51 [2023-03-31 01:10:55,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:10:55,571 INFO L495 AbstractCegarLoop]: Abstraction has 128 states and 151 transitions. [2023-03-31 01:10:55,571 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) [2023-03-31 01:10:55,571 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 151 transitions. [2023-03-31 01:10:55,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-03-31 01:10:55,573 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:10:55,573 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] [2023-03-31 01:10:55,573 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-03-31 01:10:55,573 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:10:55,574 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:10:55,574 INFO L85 PathProgramCache]: Analyzing trace with hash 1483346229, now seen corresponding path program 1 times [2023-03-31 01:10:55,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:10:55,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980121915] [2023-03-31 01:10:55,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:10:55,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:10:55,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:10:55,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:10:55,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:10:55,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-03-31 01:10:55,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:10:55,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-03-31 01:10:55,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:10:55,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-03-31 01:10:55,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:10:55,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-03-31 01:10:55,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:10:55,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-03-31 01:10:55,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:10:55,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-03-31 01:10:55,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:10:55,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-03-31 01:10:55,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:10:55,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 01:10:55,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:10:55,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980121915] [2023-03-31 01:10:55,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [980121915] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:10:55,682 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:10:55,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-03-31 01:10:55,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933591359] [2023-03-31 01:10:55,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:10:55,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-03-31 01:10:55,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:10:55,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-03-31 01:10:55,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-03-31 01:10:55,684 INFO L87 Difference]: Start difference. First operand 128 states and 151 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) [2023-03-31 01:10:56,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:10:56,024 INFO L93 Difference]: Finished difference Result 231 states and 286 transitions. [2023-03-31 01:10:56,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-03-31 01:10:56,025 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 [2023-03-31 01:10:56,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:10:56,026 INFO L225 Difference]: With dead ends: 231 [2023-03-31 01:10:56,026 INFO L226 Difference]: Without dead ends: 149 [2023-03-31 01:10:56,027 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 [2023-03-31 01:10:56,028 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 193 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 291 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 210 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 389 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 291 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-03-31 01:10:56,028 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [210 Valid, 38 Invalid, 389 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 291 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-03-31 01:10:56,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2023-03-31 01:10:56,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 119. [2023-03-31 01:10:56,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 69 states have (on average 1.2608695652173914) internal successors, (87), 78 states have internal predecessors, (87), 28 states have call successors, (28), 25 states have call predecessors, (28), 21 states have return successors, (24), 20 states have call predecessors, (24), 24 states have call successors, (24) [2023-03-31 01:10:56,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 139 transitions. [2023-03-31 01:10:56,048 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 139 transitions. Word has length 52 [2023-03-31 01:10:56,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:10:56,049 INFO L495 AbstractCegarLoop]: Abstraction has 119 states and 139 transitions. [2023-03-31 01:10:56,049 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) [2023-03-31 01:10:56,049 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 139 transitions. [2023-03-31 01:10:56,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-03-31 01:10:56,050 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:10:56,050 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] [2023-03-31 01:10:56,051 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-03-31 01:10:56,051 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:10:56,051 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:10:56,051 INFO L85 PathProgramCache]: Analyzing trace with hash -39669829, now seen corresponding path program 1 times [2023-03-31 01:10:56,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:10:56,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517164905] [2023-03-31 01:10:56,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:10:56,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:10:56,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:10:56,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:10:56,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:10:56,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-03-31 01:10:56,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:10:56,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-03-31 01:10:56,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:10:56,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-03-31 01:10:56,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:10:56,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-03-31 01:10:56,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:10:56,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-03-31 01:10:56,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:10:56,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-03-31 01:10:56,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:10:56,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-03-31 01:10:56,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:10:56,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 01:10:56,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:10:56,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [517164905] [2023-03-31 01:10:56,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [517164905] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:10:56,221 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:10:56,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-03-31 01:10:56,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666797544] [2023-03-31 01:10:56,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:10:56,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-03-31 01:10:56,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:10:56,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-03-31 01:10:56,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-03-31 01:10:56,223 INFO L87 Difference]: Start difference. First operand 119 states and 139 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) [2023-03-31 01:10:56,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:10:56,699 INFO L93 Difference]: Finished difference Result 240 states and 301 transitions. [2023-03-31 01:10:56,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-03-31 01:10:56,700 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 [2023-03-31 01:10:56,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:10:56,701 INFO L225 Difference]: With dead ends: 240 [2023-03-31 01:10:56,701 INFO L226 Difference]: Without dead ends: 149 [2023-03-31 01:10:56,702 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 [2023-03-31 01:10:56,702 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 273 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 581 mSolverCounterSat, 162 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 275 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 743 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 162 IncrementalHoareTripleChecker+Valid, 581 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-03-31 01:10:56,703 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [275 Valid, 48 Invalid, 743 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [162 Valid, 581 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-03-31 01:10:56,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2023-03-31 01:10:56,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 119. [2023-03-31 01:10:56,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 69 states have (on average 1.2463768115942029) internal successors, (86), 77 states have internal predecessors, (86), 28 states have call successors, (28), 25 states have call predecessors, (28), 21 states have return successors, (24), 20 states have call predecessors, (24), 24 states have call successors, (24) [2023-03-31 01:10:56,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 138 transitions. [2023-03-31 01:10:56,725 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 138 transitions. Word has length 56 [2023-03-31 01:10:56,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:10:56,726 INFO L495 AbstractCegarLoop]: Abstraction has 119 states and 138 transitions. [2023-03-31 01:10:56,726 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) [2023-03-31 01:10:56,726 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 138 transitions. [2023-03-31 01:10:56,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-03-31 01:10:56,727 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:10:56,727 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] [2023-03-31 01:10:56,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-03-31 01:10:56,728 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:10:56,728 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:10:56,728 INFO L85 PathProgramCache]: Analyzing trace with hash -1283007998, now seen corresponding path program 1 times [2023-03-31 01:10:56,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:10:56,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470939229] [2023-03-31 01:10:56,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:10:56,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:10:56,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:10:56,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:10:56,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:10:56,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-03-31 01:10:56,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:10:56,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-03-31 01:10:56,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:10:56,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-03-31 01:10:56,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:10:56,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-03-31 01:10:56,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:10:56,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-03-31 01:10:56,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:10:56,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-03-31 01:10:56,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:10:56,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-03-31 01:10:56,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:10:56,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-03-31 01:10:56,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:10:56,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-03-31 01:10:56,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:10:56,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-03-31 01:10:56,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:10:56,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 01:10:56,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:10:56,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470939229] [2023-03-31 01:10:56,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1470939229] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:10:56,898 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:10:56,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-03-31 01:10:56,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656882647] [2023-03-31 01:10:56,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:10:56,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-03-31 01:10:56,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:10:56,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-03-31 01:10:56,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-03-31 01:10:56,914 INFO L87 Difference]: Start difference. First operand 119 states and 138 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) [2023-03-31 01:10:57,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:10:57,637 INFO L93 Difference]: Finished difference Result 334 states and 423 transitions. [2023-03-31 01:10:57,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-03-31 01:10:57,638 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 [2023-03-31 01:10:57,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:10:57,639 INFO L225 Difference]: With dead ends: 334 [2023-03-31 01:10:57,639 INFO L226 Difference]: Without dead ends: 243 [2023-03-31 01:10:57,640 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 [2023-03-31 01:10:57,641 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 432 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 444 mSolverCounterSat, 270 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 436 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 714 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 270 IncrementalHoareTripleChecker+Valid, 444 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-03-31 01:10:57,641 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [436 Valid, 90 Invalid, 714 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [270 Valid, 444 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-03-31 01:10:57,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2023-03-31 01:10:57,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 197. [2023-03-31 01:10:57,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 119 states have (on average 1.226890756302521) internal successors, (146), 126 states have internal predecessors, (146), 39 states have call successors, (39), 37 states have call predecessors, (39), 38 states have return successors, (42), 38 states have call predecessors, (42), 35 states have call successors, (42) [2023-03-31 01:10:57,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 227 transitions. [2023-03-31 01:10:57,699 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 227 transitions. Word has length 69 [2023-03-31 01:10:57,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:10:57,699 INFO L495 AbstractCegarLoop]: Abstraction has 197 states and 227 transitions. [2023-03-31 01:10:57,700 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) [2023-03-31 01:10:57,700 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 227 transitions. [2023-03-31 01:10:57,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-03-31 01:10:57,701 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:10:57,701 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] [2023-03-31 01:10:57,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-03-31 01:10:57,701 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:10:57,702 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:10:57,702 INFO L85 PathProgramCache]: Analyzing trace with hash -254581169, now seen corresponding path program 1 times [2023-03-31 01:10:57,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:10:57,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558956474] [2023-03-31 01:10:57,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:10:57,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:10:57,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:10:57,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:10:57,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:10:57,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-03-31 01:10:57,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:10:57,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-03-31 01:10:57,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:10:57,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-03-31 01:10:57,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:10:57,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-03-31 01:10:57,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:10:57,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-03-31 01:10:57,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:10:57,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-03-31 01:10:57,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:10:57,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-03-31 01:10:57,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:10:57,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-03-31 01:10:57,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:10:57,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-03-31 01:10:57,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:10:57,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-03-31 01:10:57,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:10:57,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-03-31 01:10:57,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:10:57,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-03-31 01:10:57,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:10:57,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 01:10:57,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:10:57,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558956474] [2023-03-31 01:10:57,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [558956474] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:10:57,918 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:10:57,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-03-31 01:10:57,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107436311] [2023-03-31 01:10:57,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:10:57,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-03-31 01:10:57,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:10:57,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-03-31 01:10:57,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-03-31 01:10:57,922 INFO L87 Difference]: Start difference. First operand 197 states and 227 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) [2023-03-31 01:10:58,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:10:58,553 INFO L93 Difference]: Finished difference Result 582 states and 737 transitions. [2023-03-31 01:10:58,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-03-31 01:10:58,554 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 [2023-03-31 01:10:58,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:10:58,558 INFO L225 Difference]: With dead ends: 582 [2023-03-31 01:10:58,558 INFO L226 Difference]: Without dead ends: 413 [2023-03-31 01:10:58,559 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=105, Invalid=275, Unknown=0, NotChecked=0, Total=380 [2023-03-31 01:10:58,562 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 294 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 734 mSolverCounterSat, 158 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 307 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 892 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 158 IncrementalHoareTripleChecker+Valid, 734 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-03-31 01:10:58,562 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [307 Valid, 75 Invalid, 892 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [158 Valid, 734 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-03-31 01:10:58,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 413 states. [2023-03-31 01:10:58,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 413 to 342. [2023-03-31 01:10:58,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 342 states, 209 states have (on average 1.2057416267942584) internal successors, (252), 222 states have internal predecessors, (252), 65 states have call successors, (65), 61 states have call predecessors, (65), 67 states have return successors, (77), 67 states have call predecessors, (77), 61 states have call successors, (77) [2023-03-31 01:10:58,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 394 transitions. [2023-03-31 01:10:58,609 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 394 transitions. Word has length 83 [2023-03-31 01:10:58,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:10:58,609 INFO L495 AbstractCegarLoop]: Abstraction has 342 states and 394 transitions. [2023-03-31 01:10:58,609 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) [2023-03-31 01:10:58,609 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 394 transitions. [2023-03-31 01:10:58,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-03-31 01:10:58,610 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:10:58,610 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] [2023-03-31 01:10:58,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-03-31 01:10:58,611 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:10:58,611 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:10:58,612 INFO L85 PathProgramCache]: Analyzing trace with hash -1135185229, now seen corresponding path program 1 times [2023-03-31 01:10:58,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:10:58,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727795097] [2023-03-31 01:10:58,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:10:58,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:10:58,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:10:58,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:10:58,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:10:58,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-03-31 01:10:58,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:10:58,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-03-31 01:10:58,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:10:58,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-03-31 01:10:58,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:10:58,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-03-31 01:10:58,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:10:58,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-03-31 01:10:58,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:10:58,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-03-31 01:10:58,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:10:58,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-03-31 01:10:58,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:10:58,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-03-31 01:10:58,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:10:58,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-03-31 01:10:58,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:10:58,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-03-31 01:10:58,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:10:58,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-03-31 01:10:58,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:10:58,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-03-31 01:10:58,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:10:58,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-03-31 01:10:58,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:10:58,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 01:10:58,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:10:58,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727795097] [2023-03-31 01:10:58,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [727795097] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:10:58,802 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:10:58,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-03-31 01:10:58,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893796973] [2023-03-31 01:10:58,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:10:58,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-03-31 01:10:58,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:10:58,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-03-31 01:10:58,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2023-03-31 01:10:58,804 INFO L87 Difference]: Start difference. First operand 342 states and 394 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) [2023-03-31 01:10:59,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:10:59,509 INFO L93 Difference]: Finished difference Result 762 states and 947 transitions. [2023-03-31 01:10:59,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-03-31 01:10:59,510 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 [2023-03-31 01:10:59,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:10:59,512 INFO L225 Difference]: With dead ends: 762 [2023-03-31 01:10:59,512 INFO L226 Difference]: Without dead ends: 448 [2023-03-31 01:10:59,513 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=194, Invalid=508, Unknown=0, NotChecked=0, Total=702 [2023-03-31 01:10:59,513 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 549 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 717 mSolverCounterSat, 322 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 558 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 1039 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 322 IncrementalHoareTripleChecker+Valid, 717 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-03-31 01:10:59,514 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [558 Valid, 107 Invalid, 1039 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [322 Valid, 717 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-03-31 01:10:59,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 448 states. [2023-03-31 01:10:59,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 448 to 341. [2023-03-31 01:10:59,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 341 states, 208 states have (on average 1.1971153846153846) internal successors, (249), 221 states have internal predecessors, (249), 65 states have call successors, (65), 61 states have call predecessors, (65), 67 states have return successors, (77), 67 states have call predecessors, (77), 61 states have call successors, (77) [2023-03-31 01:10:59,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 391 transitions. [2023-03-31 01:10:59,541 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 391 transitions. Word has length 87 [2023-03-31 01:10:59,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:10:59,541 INFO L495 AbstractCegarLoop]: Abstraction has 341 states and 391 transitions. [2023-03-31 01:10:59,542 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) [2023-03-31 01:10:59,542 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 391 transitions. [2023-03-31 01:10:59,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-03-31 01:10:59,542 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:10:59,543 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, 1] [2023-03-31 01:10:59,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-03-31 01:10:59,543 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:10:59,543 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:10:59,543 INFO L85 PathProgramCache]: Analyzing trace with hash 734127501, now seen corresponding path program 1 times [2023-03-31 01:10:59,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:10:59,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151708358] [2023-03-31 01:10:59,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:10:59,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:10:59,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:10:59,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:10:59,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:10:59,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-03-31 01:10:59,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:10:59,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-03-31 01:10:59,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:10:59,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-03-31 01:10:59,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:10:59,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-03-31 01:10:59,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:10:59,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-03-31 01:10:59,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:10:59,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-03-31 01:10:59,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:10:59,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-03-31 01:10:59,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:10:59,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-03-31 01:10:59,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:10:59,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-03-31 01:10:59,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:10:59,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-03-31 01:10:59,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:10:59,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-03-31 01:10:59,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:10:59,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-03-31 01:10:59,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:10:59,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-03-31 01:10:59,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:10:59,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 01:10:59,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:10:59,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151708358] [2023-03-31 01:10:59,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1151708358] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:10:59,659 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:10:59,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-03-31 01:10:59,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846583233] [2023-03-31 01:10:59,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:10:59,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-03-31 01:10:59,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:10:59,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-03-31 01:10:59,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2023-03-31 01:10:59,660 INFO L87 Difference]: Start difference. First operand 341 states and 391 transitions. Second operand has 10 states, 10 states have (on average 5.4) internal successors, (54), 5 states have internal predecessors, (54), 2 states have call successors, (20), 6 states have call predecessors, (20), 3 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) [2023-03-31 01:11:00,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:11:00,214 INFO L93 Difference]: Finished difference Result 765 states and 956 transitions. [2023-03-31 01:11:00,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-03-31 01:11:00,214 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.4) internal successors, (54), 5 states have internal predecessors, (54), 2 states have call successors, (20), 6 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 88 [2023-03-31 01:11:00,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:11:00,216 INFO L225 Difference]: With dead ends: 765 [2023-03-31 01:11:00,216 INFO L226 Difference]: Without dead ends: 452 [2023-03-31 01:11:00,217 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2023-03-31 01:11:00,218 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 283 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 767 mSolverCounterSat, 137 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 300 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 904 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 137 IncrementalHoareTripleChecker+Valid, 767 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-03-31 01:11:00,218 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [300 Valid, 75 Invalid, 904 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [137 Valid, 767 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-03-31 01:11:00,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 452 states. [2023-03-31 01:11:00,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 452 to 351. [2023-03-31 01:11:00,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 351 states, 216 states have (on average 1.1898148148148149) internal successors, (257), 229 states have internal predecessors, (257), 65 states have call successors, (65), 61 states have call predecessors, (65), 69 states have return successors, (79), 69 states have call predecessors, (79), 61 states have call successors, (79) [2023-03-31 01:11:00,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 401 transitions. [2023-03-31 01:11:00,245 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 401 transitions. Word has length 88 [2023-03-31 01:11:00,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:11:00,245 INFO L495 AbstractCegarLoop]: Abstraction has 351 states and 401 transitions. [2023-03-31 01:11:00,245 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.4) internal successors, (54), 5 states have internal predecessors, (54), 2 states have call successors, (20), 6 states have call predecessors, (20), 3 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) [2023-03-31 01:11:00,246 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 401 transitions. [2023-03-31 01:11:00,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-03-31 01:11:00,246 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:11:00,246 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, 1] [2023-03-31 01:11:00,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-03-31 01:11:00,247 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:11:00,247 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:11:00,247 INFO L85 PathProgramCache]: Analyzing trace with hash 1435727375, now seen corresponding path program 1 times [2023-03-31 01:11:00,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:11:00,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765780421] [2023-03-31 01:11:00,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:11:00,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:11:00,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:00,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:11:00,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:00,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-03-31 01:11:00,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:00,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-03-31 01:11:00,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:00,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-03-31 01:11:00,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:00,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-03-31 01:11:00,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:00,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-03-31 01:11:00,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:00,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-03-31 01:11:00,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:00,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-03-31 01:11:00,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:00,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-03-31 01:11:00,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:00,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-03-31 01:11:00,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:00,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-03-31 01:11:00,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:00,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-03-31 01:11:00,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:00,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-03-31 01:11:00,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:00,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-03-31 01:11:00,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:00,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 01:11:00,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:11:00,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765780421] [2023-03-31 01:11:00,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1765780421] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:11:00,404 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:11:00,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-03-31 01:11:00,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066148730] [2023-03-31 01:11:00,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:11:00,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-03-31 01:11:00,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:11:00,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-03-31 01:11:00,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2023-03-31 01:11:00,405 INFO L87 Difference]: Start difference. First operand 351 states and 401 transitions. Second operand has 12 states, 12 states have (on average 4.5) internal successors, (54), 6 states have internal predecessors, (54), 2 states have call successors, (20), 6 states have call predecessors, (20), 4 states have return successors, (14), 4 states have call predecessors, (14), 2 states have call successors, (14) [2023-03-31 01:11:01,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:11:01,038 INFO L93 Difference]: Finished difference Result 789 states and 998 transitions. [2023-03-31 01:11:01,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-03-31 01:11:01,038 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.5) internal successors, (54), 6 states have internal predecessors, (54), 2 states have call successors, (20), 6 states have call predecessors, (20), 4 states have return successors, (14), 4 states have call predecessors, (14), 2 states have call successors, (14) Word has length 88 [2023-03-31 01:11:01,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:11:01,040 INFO L225 Difference]: With dead ends: 789 [2023-03-31 01:11:01,040 INFO L226 Difference]: Without dead ends: 466 [2023-03-31 01:11:01,041 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2023-03-31 01:11:01,042 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 213 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 1040 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 231 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 1122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 1040 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-03-31 01:11:01,042 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [231 Valid, 89 Invalid, 1122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 1040 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-03-31 01:11:01,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 466 states. [2023-03-31 01:11:01,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 466 to 359. [2023-03-31 01:11:01,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 359 states, 222 states have (on average 1.1846846846846846) internal successors, (263), 235 states have internal predecessors, (263), 65 states have call successors, (65), 61 states have call predecessors, (65), 71 states have return successors, (81), 71 states have call predecessors, (81), 61 states have call successors, (81) [2023-03-31 01:11:01,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 409 transitions. [2023-03-31 01:11:01,069 INFO L78 Accepts]: Start accepts. Automaton has 359 states and 409 transitions. Word has length 88 [2023-03-31 01:11:01,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:11:01,070 INFO L495 AbstractCegarLoop]: Abstraction has 359 states and 409 transitions. [2023-03-31 01:11:01,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.5) internal successors, (54), 6 states have internal predecessors, (54), 2 states have call successors, (20), 6 states have call predecessors, (20), 4 states have return successors, (14), 4 states have call predecessors, (14), 2 states have call successors, (14) [2023-03-31 01:11:01,070 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states and 409 transitions. [2023-03-31 01:11:01,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-03-31 01:11:01,071 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:11:01,071 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, 1] [2023-03-31 01:11:01,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-03-31 01:11:01,071 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:11:01,071 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:11:01,071 INFO L85 PathProgramCache]: Analyzing trace with hash -1133759024, now seen corresponding path program 1 times [2023-03-31 01:11:01,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:11:01,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339350813] [2023-03-31 01:11:01,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:11:01,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:11:01,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:01,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:11:01,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:01,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-03-31 01:11:01,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:01,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-03-31 01:11:01,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:01,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-03-31 01:11:01,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:01,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-03-31 01:11:01,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:01,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-03-31 01:11:01,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:01,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-03-31 01:11:01,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:01,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-03-31 01:11:01,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:01,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-03-31 01:11:01,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:01,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-03-31 01:11:01,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:01,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-03-31 01:11:01,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:01,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-03-31 01:11:01,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:01,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-03-31 01:11:01,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:01,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-03-31 01:11:01,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:01,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 01:11:01,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:11:01,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339350813] [2023-03-31 01:11:01,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1339350813] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:11:01,196 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:11:01,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-03-31 01:11:01,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294747025] [2023-03-31 01:11:01,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:11:01,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-03-31 01:11:01,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:11:01,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-03-31 01:11:01,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-03-31 01:11:01,198 INFO L87 Difference]: Start difference. First operand 359 states and 409 transitions. Second operand has 8 states, 8 states have (on average 6.75) internal successors, (54), 4 states have internal predecessors, (54), 4 states have call successors, (20), 7 states have call predecessors, (20), 3 states have return successors, (14), 3 states have call predecessors, (14), 4 states have call successors, (14) [2023-03-31 01:11:01,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:11:01,906 INFO L93 Difference]: Finished difference Result 1108 states and 1449 transitions. [2023-03-31 01:11:01,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-03-31 01:11:01,907 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.75) internal successors, (54), 4 states have internal predecessors, (54), 4 states have call successors, (20), 7 states have call predecessors, (20), 3 states have return successors, (14), 3 states have call predecessors, (14), 4 states have call successors, (14) Word has length 88 [2023-03-31 01:11:01,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:11:01,910 INFO L225 Difference]: With dead ends: 1108 [2023-03-31 01:11:01,911 INFO L226 Difference]: Without dead ends: 777 [2023-03-31 01:11:01,912 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 36 SyntacticMatches, 3 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=134, Invalid=372, Unknown=0, NotChecked=0, Total=506 [2023-03-31 01:11:01,913 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 774 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 506 mSolverCounterSat, 441 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 786 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 947 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 441 IncrementalHoareTripleChecker+Valid, 506 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-03-31 01:11:01,914 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [786 Valid, 109 Invalid, 947 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [441 Valid, 506 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-03-31 01:11:01,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 777 states. [2023-03-31 01:11:01,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 777 to 645. [2023-03-31 01:11:01,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 645 states, 412 states have (on average 1.174757281553398) internal successors, (484), 437 states have internal predecessors, (484), 115 states have call successors, (115), 111 states have call predecessors, (115), 117 states have return successors, (164), 115 states have call predecessors, (164), 111 states have call successors, (164) [2023-03-31 01:11:01,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 645 states to 645 states and 763 transitions. [2023-03-31 01:11:01,966 INFO L78 Accepts]: Start accepts. Automaton has 645 states and 763 transitions. Word has length 88 [2023-03-31 01:11:01,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:11:01,967 INFO L495 AbstractCegarLoop]: Abstraction has 645 states and 763 transitions. [2023-03-31 01:11:01,967 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.75) internal successors, (54), 4 states have internal predecessors, (54), 4 states have call successors, (20), 7 states have call predecessors, (20), 3 states have return successors, (14), 3 states have call predecessors, (14), 4 states have call successors, (14) [2023-03-31 01:11:01,967 INFO L276 IsEmpty]: Start isEmpty. Operand 645 states and 763 transitions. [2023-03-31 01:11:01,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-03-31 01:11:01,969 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:11:01,969 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, 1, 1, 1, 1, 1] [2023-03-31 01:11:01,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-03-31 01:11:01,969 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:11:01,969 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:11:01,970 INFO L85 PathProgramCache]: Analyzing trace with hash 1411858218, now seen corresponding path program 1 times [2023-03-31 01:11:01,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:11:01,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656935020] [2023-03-31 01:11:01,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:11:01,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:11:01,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:02,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:11:02,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:02,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-03-31 01:11:02,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:02,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-03-31 01:11:02,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:02,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-03-31 01:11:02,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:02,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-03-31 01:11:02,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:02,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-03-31 01:11:02,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:02,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-03-31 01:11:02,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:02,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-03-31 01:11:02,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:02,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-03-31 01:11:02,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:02,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-03-31 01:11:02,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:02,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-03-31 01:11:02,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:02,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-03-31 01:11:02,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:02,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-03-31 01:11:02,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:02,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-03-31 01:11:02,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:02,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-03-31 01:11:02,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:02,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 01:11:02,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:11:02,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656935020] [2023-03-31 01:11:02,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1656935020] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:11:02,104 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:11:02,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-03-31 01:11:02,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49097330] [2023-03-31 01:11:02,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:11:02,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-03-31 01:11:02,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:11:02,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-03-31 01:11:02,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-03-31 01:11:02,105 INFO L87 Difference]: Start difference. First operand 645 states and 763 transitions. Second operand has 8 states, 8 states have (on average 7.0) internal successors, (56), 3 states have internal predecessors, (56), 3 states have call successors, (21), 8 states have call predecessors, (21), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-03-31 01:11:02,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:11:02,818 INFO L93 Difference]: Finished difference Result 1272 states and 1654 transitions. [2023-03-31 01:11:02,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-03-31 01:11:02,818 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.0) internal successors, (56), 3 states have internal predecessors, (56), 3 states have call successors, (21), 8 states have call predecessors, (21), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 92 [2023-03-31 01:11:02,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:11:02,823 INFO L225 Difference]: With dead ends: 1272 [2023-03-31 01:11:02,823 INFO L226 Difference]: Without dead ends: 1269 [2023-03-31 01:11:02,824 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=171, Invalid=479, Unknown=0, NotChecked=0, Total=650 [2023-03-31 01:11:02,825 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 473 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 377 mSolverCounterSat, 250 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 481 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 627 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 250 IncrementalHoareTripleChecker+Valid, 377 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-03-31 01:11:02,826 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [481 Valid, 95 Invalid, 627 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [250 Valid, 377 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-03-31 01:11:02,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1269 states. [2023-03-31 01:11:02,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1269 to 1071. [2023-03-31 01:11:02,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1071 states, 669 states have (on average 1.1599402092675635) internal successors, (776), 710 states have internal predecessors, (776), 193 states have call successors, (193), 175 states have call predecessors, (193), 208 states have return successors, (311), 208 states have call predecessors, (311), 189 states have call successors, (311) [2023-03-31 01:11:02,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1071 states to 1071 states and 1280 transitions. [2023-03-31 01:11:02,919 INFO L78 Accepts]: Start accepts. Automaton has 1071 states and 1280 transitions. Word has length 92 [2023-03-31 01:11:02,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:11:02,920 INFO L495 AbstractCegarLoop]: Abstraction has 1071 states and 1280 transitions. [2023-03-31 01:11:02,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.0) internal successors, (56), 3 states have internal predecessors, (56), 3 states have call successors, (21), 8 states have call predecessors, (21), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-03-31 01:11:02,920 INFO L276 IsEmpty]: Start isEmpty. Operand 1071 states and 1280 transitions. [2023-03-31 01:11:02,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2023-03-31 01:11:02,929 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:11:02,929 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 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] [2023-03-31 01:11:02,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-03-31 01:11:02,930 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:11:02,930 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:11:02,930 INFO L85 PathProgramCache]: Analyzing trace with hash 1022168548, now seen corresponding path program 1 times [2023-03-31 01:11:02,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:11:02,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431930518] [2023-03-31 01:11:02,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:11:02,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:11:02,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:03,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:11:03,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:03,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-03-31 01:11:03,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:03,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-03-31 01:11:03,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:03,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-03-31 01:11:03,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:03,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-03-31 01:11:03,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:03,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-03-31 01:11:03,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:03,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-03-31 01:11:03,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:03,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-03-31 01:11:03,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:03,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-03-31 01:11:03,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:03,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-03-31 01:11:03,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:03,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-03-31 01:11:03,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:03,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-03-31 01:11:03,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:03,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-03-31 01:11:03,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:03,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-03-31 01:11:03,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:03,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-03-31 01:11:03,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:03,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-03-31 01:11:03,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:03,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-03-31 01:11:03,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:03,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-03-31 01:11:03,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:03,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-03-31 01:11:03,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:03,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-03-31 01:11:03,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:03,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-03-31 01:11:03,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:03,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-03-31 01:11:03,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:03,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-03-31 01:11:03,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:03,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2023-03-31 01:11:03,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:03,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2023-03-31 01:11:03,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:03,165 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 21 proven. 3 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-03-31 01:11:03,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:11:03,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431930518] [2023-03-31 01:11:03,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1431930518] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-31 01:11:03,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1641847280] [2023-03-31 01:11:03,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:11:03,165 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 01:11:03,165 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 01:11:03,167 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) [2023-03-31 01:11:03,194 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-03-31 01:11:03,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:03,344 INFO L262 TraceCheckSpWp]: Trace formula consists of 525 conjuncts, 9 conjunts are in the unsatisfiable core [2023-03-31 01:11:03,351 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-31 01:11:03,649 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-03-31 01:11:03,649 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-03-31 01:11:03,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1641847280] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:11:03,649 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-03-31 01:11:03,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [19] total 24 [2023-03-31 01:11:03,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350185426] [2023-03-31 01:11:03,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:11:03,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-03-31 01:11:03,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:11:03,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-03-31 01:11:03,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=488, Unknown=0, NotChecked=0, Total=552 [2023-03-31 01:11:03,651 INFO L87 Difference]: Start difference. First operand 1071 states and 1280 transitions. Second operand has 8 states, 8 states have (on average 11.25) internal successors, (90), 6 states have internal predecessors, (90), 3 states have call successors, (29), 3 states have call predecessors, (29), 5 states have return successors, (25), 5 states have call predecessors, (25), 3 states have call successors, (25) [2023-03-31 01:11:04,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:11:04,031 INFO L93 Difference]: Finished difference Result 1931 states and 2290 transitions. [2023-03-31 01:11:04,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-03-31 01:11:04,032 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.25) internal successors, (90), 6 states have internal predecessors, (90), 3 states have call successors, (29), 3 states have call predecessors, (29), 5 states have return successors, (25), 5 states have call predecessors, (25), 3 states have call successors, (25) Word has length 150 [2023-03-31 01:11:04,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:11:04,035 INFO L225 Difference]: With dead ends: 1931 [2023-03-31 01:11:04,035 INFO L226 Difference]: Without dead ends: 888 [2023-03-31 01:11:04,038 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 188 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=64, Invalid=488, Unknown=0, NotChecked=0, Total=552 [2023-03-31 01:11:04,038 INFO L413 NwaCegarLoop]: 223 mSDtfsCounter, 29 mSDsluCounter, 448 mSDsCounter, 0 mSdLazyCounter, 198 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 671 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-03-31 01:11:04,038 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 671 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 198 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-03-31 01:11:04,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 888 states. [2023-03-31 01:11:04,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 888 to 888. [2023-03-31 01:11:04,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 888 states, 559 states have (on average 1.1377459749552772) internal successors, (636), 589 states have internal predecessors, (636), 158 states have call successors, (158), 149 states have call predecessors, (158), 170 states have return successors, (221), 166 states have call predecessors, (221), 154 states have call successors, (221) [2023-03-31 01:11:04,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 888 states to 888 states and 1015 transitions. [2023-03-31 01:11:04,272 INFO L78 Accepts]: Start accepts. Automaton has 888 states and 1015 transitions. Word has length 150 [2023-03-31 01:11:04,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:11:04,272 INFO L495 AbstractCegarLoop]: Abstraction has 888 states and 1015 transitions. [2023-03-31 01:11:04,273 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.25) internal successors, (90), 6 states have internal predecessors, (90), 3 states have call successors, (29), 3 states have call predecessors, (29), 5 states have return successors, (25), 5 states have call predecessors, (25), 3 states have call successors, (25) [2023-03-31 01:11:04,273 INFO L276 IsEmpty]: Start isEmpty. Operand 888 states and 1015 transitions. [2023-03-31 01:11:04,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2023-03-31 01:11:04,275 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:11:04,275 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-03-31 01:11:04,283 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-03-31 01:11:04,480 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,SelfDestructingSolverStorable10 [2023-03-31 01:11:04,480 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:11:04,481 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:11:04,481 INFO L85 PathProgramCache]: Analyzing trace with hash -341501901, now seen corresponding path program 1 times [2023-03-31 01:11:04,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:11:04,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093315812] [2023-03-31 01:11:04,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:11:04,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:11:04,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:04,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:11:04,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:04,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-03-31 01:11:04,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:04,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-03-31 01:11:04,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:04,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-03-31 01:11:04,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:04,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-03-31 01:11:04,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:04,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-03-31 01:11:04,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:04,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-03-31 01:11:04,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:04,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-03-31 01:11:04,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:04,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-03-31 01:11:04,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:04,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-03-31 01:11:04,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:04,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-03-31 01:11:04,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:04,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-03-31 01:11:04,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:04,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-03-31 01:11:04,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:04,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-03-31 01:11:04,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:04,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-03-31 01:11:04,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:04,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-03-31 01:11:04,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:04,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-03-31 01:11:04,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:04,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-03-31 01:11:04,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:04,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-03-31 01:11:04,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:04,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-03-31 01:11:04,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:04,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-03-31 01:11:04,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:04,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-03-31 01:11:04,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:04,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2023-03-31 01:11:04,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:04,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2023-03-31 01:11:04,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:04,760 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 20 proven. 7 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-03-31 01:11:04,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:11:04,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093315812] [2023-03-31 01:11:04,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1093315812] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-31 01:11:04,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [367868115] [2023-03-31 01:11:04,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:11:04,760 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 01:11:04,760 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 01:11:04,772 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) [2023-03-31 01:11:04,773 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-03-31 01:11:04,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:04,921 INFO L262 TraceCheckSpWp]: Trace formula consists of 529 conjuncts, 4 conjunts are in the unsatisfiable core [2023-03-31 01:11:04,925 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-31 01:11:04,993 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 01:11:04,994 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-03-31 01:11:04,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [367868115] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:11:04,994 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-03-31 01:11:04,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [13] total 13 [2023-03-31 01:11:04,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103944879] [2023-03-31 01:11:04,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:11:04,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-03-31 01:11:04,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:11:04,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-03-31 01:11:04,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-03-31 01:11:04,995 INFO L87 Difference]: Start difference. First operand 888 states and 1015 transitions. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 3 states have call successors, (30), 3 states have call predecessors, (30), 3 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2023-03-31 01:11:05,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:11:05,123 INFO L93 Difference]: Finished difference Result 1478 states and 1719 transitions. [2023-03-31 01:11:05,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-03-31 01:11:05,141 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 3 states have call successors, (30), 3 states have call predecessors, (30), 3 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) Word has length 150 [2023-03-31 01:11:05,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:11:05,142 INFO L225 Difference]: With dead ends: 1478 [2023-03-31 01:11:05,142 INFO L226 Difference]: Without dead ends: 0 [2023-03-31 01:11:05,144 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 196 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-03-31 01:11:05,144 INFO L413 NwaCegarLoop]: 187 mSDtfsCounter, 45 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 290 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-03-31 01:11:05,145 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 290 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-03-31 01:11:05,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-03-31 01:11:05,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-03-31 01:11:05,145 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) [2023-03-31 01:11:05,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-03-31 01:11:05,145 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 150 [2023-03-31 01:11:05,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:11:05,146 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-03-31 01:11:05,146 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 3 states have call successors, (30), 3 states have call predecessors, (30), 3 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2023-03-31 01:11:05,146 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-03-31 01:11:05,146 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-03-31 01:11:05,148 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-03-31 01:11:05,153 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-03-31 01:11:05,353 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,SelfDestructingSolverStorable11 [2023-03-31 01:11:05,355 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.