/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_spec1_product58.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-03-31 01:09:19,754 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-03-31 01:09:19,757 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-03-31 01:09:19,794 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-03-31 01:09:19,795 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-03-31 01:09:19,797 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-03-31 01:09:19,800 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-03-31 01:09:19,804 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-03-31 01:09:19,807 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-03-31 01:09:19,812 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-03-31 01:09:19,814 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-03-31 01:09:19,815 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-03-31 01:09:19,815 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-03-31 01:09:19,818 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-03-31 01:09:19,819 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-03-31 01:09:19,820 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-03-31 01:09:19,820 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-03-31 01:09:19,821 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-03-31 01:09:19,823 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-03-31 01:09:19,827 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-03-31 01:09:19,828 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-03-31 01:09:19,829 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-03-31 01:09:19,830 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-03-31 01:09:19,831 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-03-31 01:09:19,839 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-03-31 01:09:19,840 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-03-31 01:09:19,840 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-03-31 01:09:19,841 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-03-31 01:09:19,842 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-03-31 01:09:19,842 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-03-31 01:09:19,843 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-03-31 01:09:19,843 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-03-31 01:09:19,845 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-03-31 01:09:19,845 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-03-31 01:09:19,846 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-03-31 01:09:19,846 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-03-31 01:09:19,846 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-03-31 01:09:19,847 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-03-31 01:09:19,847 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-03-31 01:09:19,847 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-03-31 01:09:19,848 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-03-31 01:09:19,850 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 01:09:19,878 INFO L113 SettingsManager]: Loading preferences was successful [2023-03-31 01:09:19,878 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-03-31 01:09:19,878 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-03-31 01:09:19,879 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-03-31 01:09:19,880 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-03-31 01:09:19,880 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-03-31 01:09:19,881 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-03-31 01:09:19,881 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-03-31 01:09:19,881 INFO L138 SettingsManager]: * Use SBE=true [2023-03-31 01:09:19,881 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-03-31 01:09:19,882 INFO L138 SettingsManager]: * sizeof long=4 [2023-03-31 01:09:19,882 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-03-31 01:09:19,882 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-03-31 01:09:19,882 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-03-31 01:09:19,882 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-03-31 01:09:19,883 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-03-31 01:09:19,883 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-03-31 01:09:19,883 INFO L138 SettingsManager]: * sizeof long double=12 [2023-03-31 01:09:19,883 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-03-31 01:09:19,883 INFO L138 SettingsManager]: * Use constant arrays=true [2023-03-31 01:09:19,883 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-03-31 01:09:19,883 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-03-31 01:09:19,884 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-03-31 01:09:19,884 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-03-31 01:09:19,884 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-31 01:09:19,885 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-03-31 01:09:19,885 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-03-31 01:09:19,885 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-03-31 01:09:19,885 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-03-31 01:09:19,885 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-03-31 01:09:19,886 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-03-31 01:09:19,886 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-03-31 01:09:19,886 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-03-31 01:09:19,886 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-03-31 01:09:19,886 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-03-31 01:09:19,886 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-03-31 01:09:20,112 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-03-31 01:09:20,140 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-03-31 01:09:20,144 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-03-31 01:09:20,145 INFO L271 PluginConnector]: Initializing CDTParser... [2023-03-31 01:09:20,145 INFO L275 PluginConnector]: CDTParser initialized [2023-03-31 01:09:20,146 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/minepump_spec1_product58.cil.c [2023-03-31 01:09:21,360 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-03-31 01:09:21,622 INFO L351 CDTParser]: Found 1 translation units. [2023-03-31 01:09:21,623 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec1_product58.cil.c [2023-03-31 01:09:21,639 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/200b1808a/c45637c0a86c4f1b996ed6f82461b2c9/FLAG9e6337431 [2023-03-31 01:09:21,654 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/200b1808a/c45637c0a86c4f1b996ed6f82461b2c9 [2023-03-31 01:09:21,656 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-03-31 01:09:21,658 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-03-31 01:09:21,660 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-03-31 01:09:21,660 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-03-31 01:09:21,663 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-03-31 01:09:21,664 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.03 01:09:21" (1/1) ... [2023-03-31 01:09:21,665 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ca0510b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:09:21, skipping insertion in model container [2023-03-31 01:09:21,665 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.03 01:09:21" (1/1) ... [2023-03-31 01:09:21,672 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-03-31 01:09:21,717 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-03-31 01:09:21,857 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_spec1_product58.cil.c[1605,1618] [2023-03-31 01:09:21,964 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-31 01:09:21,974 INFO L203 MainTranslator]: Completed pre-run [2023-03-31 01:09:21,985 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_spec1_product58.cil.c[1605,1618] [2023-03-31 01:09:22,048 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-31 01:09:22,065 INFO L208 MainTranslator]: Completed translation [2023-03-31 01:09:22,066 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:09:22 WrapperNode [2023-03-31 01:09:22,066 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-03-31 01:09:22,067 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-03-31 01:09:22,067 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-03-31 01:09:22,067 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-03-31 01:09:22,078 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:09:22" (1/1) ... [2023-03-31 01:09:22,078 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:09:22" (1/1) ... [2023-03-31 01:09:22,093 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:09:22" (1/1) ... [2023-03-31 01:09:22,094 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:09:22" (1/1) ... [2023-03-31 01:09:22,113 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:09:22" (1/1) ... [2023-03-31 01:09:22,119 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:09:22" (1/1) ... [2023-03-31 01:09:22,122 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:09:22" (1/1) ... [2023-03-31 01:09:22,124 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:09:22" (1/1) ... [2023-03-31 01:09:22,135 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-03-31 01:09:22,136 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-03-31 01:09:22,136 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-03-31 01:09:22,136 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-03-31 01:09:22,137 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:09:22" (1/1) ... [2023-03-31 01:09:22,145 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-31 01:09:22,155 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 01:09:22,172 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 01:09:22,177 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 01:09:22,206 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-03-31 01:09:22,207 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-03-31 01:09:22,207 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2023-03-31 01:09:22,207 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-03-31 01:09:22,207 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2023-03-31 01:09:22,207 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2023-03-31 01:09:22,207 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2023-03-31 01:09:22,207 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2023-03-31 01:09:22,208 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2023-03-31 01:09:22,208 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2023-03-31 01:09:22,208 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2023-03-31 01:09:22,208 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2023-03-31 01:09:22,208 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2023-03-31 01:09:22,208 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2023-03-31 01:09:22,208 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2023-03-31 01:09:22,208 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2023-03-31 01:09:22,208 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2023-03-31 01:09:22,208 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-03-31 01:09:22,209 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2023-03-31 01:09:22,209 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2023-03-31 01:09:22,209 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2023-03-31 01:09:22,209 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2023-03-31 01:09:22,209 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2023-03-31 01:09:22,209 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2023-03-31 01:09:22,209 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2023-03-31 01:09:22,209 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2023-03-31 01:09:22,209 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2023-03-31 01:09:22,210 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2023-03-31 01:09:22,210 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2023-03-31 01:09:22,210 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2023-03-31 01:09:22,210 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2023-03-31 01:09:22,210 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2023-03-31 01:09:22,210 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2023-03-31 01:09:22,210 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2023-03-31 01:09:22,210 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2023-03-31 01:09:22,210 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2023-03-31 01:09:22,210 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2023-03-31 01:09:22,211 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2023-03-31 01:09:22,211 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2023-03-31 01:09:22,211 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2023-03-31 01:09:22,211 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2023-03-31 01:09:22,211 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2023-03-31 01:09:22,211 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2023-03-31 01:09:22,211 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-03-31 01:09:22,211 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-03-31 01:09:22,211 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-03-31 01:09:22,211 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-03-31 01:09:22,212 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-03-31 01:09:22,212 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2023-03-31 01:09:22,212 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2023-03-31 01:09:22,212 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2023-03-31 01:09:22,212 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2023-03-31 01:09:22,212 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2023-03-31 01:09:22,212 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2023-03-31 01:09:22,212 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2023-03-31 01:09:22,213 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2023-03-31 01:09:22,213 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2023-03-31 01:09:22,213 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2023-03-31 01:09:22,213 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2023-03-31 01:09:22,213 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2023-03-31 01:09:22,213 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2023-03-31 01:09:22,213 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2023-03-31 01:09:22,213 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2023-03-31 01:09:22,213 INFO L130 BoogieDeclarations]: Found specification of procedure test [2023-03-31 01:09:22,214 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2023-03-31 01:09:22,214 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2023-03-31 01:09:22,214 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2023-03-31 01:09:22,214 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2023-03-31 01:09:22,214 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-03-31 01:09:22,214 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2023-03-31 01:09:22,214 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2023-03-31 01:09:22,214 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2023-03-31 01:09:22,214 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2023-03-31 01:09:22,215 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2023-03-31 01:09:22,215 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2023-03-31 01:09:22,215 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2023-03-31 01:09:22,215 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2023-03-31 01:09:22,215 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2023-03-31 01:09:22,215 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2023-03-31 01:09:22,215 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2023-03-31 01:09:22,215 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2023-03-31 01:09:22,215 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2023-03-31 01:09:22,216 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2023-03-31 01:09:22,216 INFO L130 BoogieDeclarations]: Found specification of procedure free [2023-03-31 01:09:22,216 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2023-03-31 01:09:22,216 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-03-31 01:09:22,216 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-03-31 01:09:22,216 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-03-31 01:09:22,216 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-03-31 01:09:22,216 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2023-03-31 01:09:22,216 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-03-31 01:09:22,216 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2023-03-31 01:09:22,217 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2023-03-31 01:09:22,217 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-03-31 01:09:22,217 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2023-03-31 01:09:22,217 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2023-03-31 01:09:22,217 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2023-03-31 01:09:22,217 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-03-31 01:09:22,217 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-03-31 01:09:22,217 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-03-31 01:09:22,434 INFO L236 CfgBuilder]: Building ICFG [2023-03-31 01:09:22,436 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-03-31 01:09:23,051 INFO L277 CfgBuilder]: Performing block encoding [2023-03-31 01:09:23,059 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-03-31 01:09:23,059 INFO L302 CfgBuilder]: Removed 5 assume(true) statements. [2023-03-31 01:09:23,065 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.03 01:09:23 BoogieIcfgContainer [2023-03-31 01:09:23,065 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-03-31 01:09:23,068 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-03-31 01:09:23,068 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-03-31 01:09:23,071 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-03-31 01:09:23,071 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.03 01:09:21" (1/3) ... [2023-03-31 01:09:23,072 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2802b887 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.03 01:09:23, skipping insertion in model container [2023-03-31 01:09:23,072 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:09:22" (2/3) ... [2023-03-31 01:09:23,073 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2802b887 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.03 01:09:23, skipping insertion in model container [2023-03-31 01:09:23,073 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.03 01:09:23" (3/3) ... [2023-03-31 01:09:23,074 INFO L112 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product58.cil.c [2023-03-31 01:09:23,087 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-03-31 01:09:23,088 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-03-31 01:09:23,154 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-03-31 01:09:23,158 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;@73c7597f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-03-31 01:09:23,159 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-03-31 01:09:23,162 INFO L276 IsEmpty]: Start isEmpty. Operand has 187 states, 104 states have (on average 1.2884615384615385) internal successors, (134), 118 states have internal predecessors, (134), 49 states have call successors, (49), 31 states have call predecessors, (49), 31 states have return successors, (49), 45 states have call predecessors, (49), 49 states have call successors, (49) [2023-03-31 01:09:23,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-03-31 01:09:23,171 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:09:23,171 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] [2023-03-31 01:09:23,172 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:09:23,176 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:09:23,176 INFO L85 PathProgramCache]: Analyzing trace with hash -809337659, now seen corresponding path program 1 times [2023-03-31 01:09:23,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:09:23,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770843893] [2023-03-31 01:09:23,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:09:23,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:09:23,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:09:23,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:09:23,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:09:23,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-03-31 01:09:23,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:09:23,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-03-31 01:09:23,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:09:23,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-03-31 01:09:23,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:09:23,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-03-31 01:09:23,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:09:23,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-03-31 01:09:23,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:09:23,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-03-31 01:09:23,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:09:23,491 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 01:09:23,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:09:23,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770843893] [2023-03-31 01:09:23,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [770843893] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:09:23,494 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:09:23,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-03-31 01:09:23,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276331904] [2023-03-31 01:09:23,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:09:23,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-03-31 01:09:23,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:09:23,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-03-31 01:09:23,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-03-31 01:09:23,526 INFO L87 Difference]: Start difference. First operand has 187 states, 104 states have (on average 1.2884615384615385) internal successors, (134), 118 states have internal predecessors, (134), 49 states have call successors, (49), 31 states have call predecessors, (49), 31 states have return successors, (49), 45 states have call predecessors, (49), 49 states have call successors, (49) Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 2 states have internal predecessors, (25), 2 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-03-31 01:09:24,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:09:24,046 INFO L93 Difference]: Finished difference Result 332 states and 428 transitions. [2023-03-31 01:09:24,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-03-31 01:09:24,049 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 2 states have internal predecessors, (25), 2 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 46 [2023-03-31 01:09:24,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:09:24,062 INFO L225 Difference]: With dead ends: 332 [2023-03-31 01:09:24,062 INFO L226 Difference]: Without dead ends: 179 [2023-03-31 01:09:24,071 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-03-31 01:09:24,075 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 105 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 233 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-03-31 01:09:24,076 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 22 Invalid, 280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 233 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-03-31 01:09:24,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2023-03-31 01:09:24,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 144. [2023-03-31 01:09:24,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 85 states have (on average 1.2352941176470589) internal successors, (105), 96 states have internal predecessors, (105), 34 states have call successors, (34), 29 states have call predecessors, (34), 24 states have return successors, (29), 25 states have call predecessors, (29), 29 states have call successors, (29) [2023-03-31 01:09:24,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 168 transitions. [2023-03-31 01:09:24,152 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 168 transitions. Word has length 46 [2023-03-31 01:09:24,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:09:24,152 INFO L495 AbstractCegarLoop]: Abstraction has 144 states and 168 transitions. [2023-03-31 01:09:24,153 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 2 states have internal predecessors, (25), 2 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-03-31 01:09:24,153 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 168 transitions. [2023-03-31 01:09:24,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-03-31 01:09:24,161 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:09:24,161 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] [2023-03-31 01:09:24,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-03-31 01:09:24,162 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:09:24,163 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:09:24,163 INFO L85 PathProgramCache]: Analyzing trace with hash 113525578, now seen corresponding path program 1 times [2023-03-31 01:09:24,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:09:24,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723469655] [2023-03-31 01:09:24,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:09:24,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:09:24,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:09:24,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:09:24,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:09:24,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-03-31 01:09:24,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:09:24,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-03-31 01:09:24,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:09:24,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-03-31 01:09:24,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:09:24,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-03-31 01:09:24,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:09:24,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-03-31 01:09:24,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:09:24,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-03-31 01:09:24,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:09:24,294 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 01:09:24,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:09:24,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723469655] [2023-03-31 01:09:24,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [723469655] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:09:24,294 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:09:24,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-03-31 01:09:24,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531864908] [2023-03-31 01:09:24,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:09:24,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-03-31 01:09:24,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:09:24,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-03-31 01:09:24,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-31 01:09:24,297 INFO L87 Difference]: Start difference. First operand 144 states and 168 transitions. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-03-31 01:09:24,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:09:24,749 INFO L93 Difference]: Finished difference Result 261 states and 315 transitions. [2023-03-31 01:09:24,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-03-31 01:09:24,750 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 47 [2023-03-31 01:09:24,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:09:24,752 INFO L225 Difference]: With dead ends: 261 [2023-03-31 01:09:24,752 INFO L226 Difference]: Without dead ends: 163 [2023-03-31 01:09:24,753 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-03-31 01:09:24,754 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 115 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 321 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 362 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 321 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-03-31 01:09:24,755 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 30 Invalid, 362 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 321 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-03-31 01:09:24,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2023-03-31 01:09:24,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 135. [2023-03-31 01:09:24,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 79 states have (on average 1.240506329113924) internal successors, (98), 90 states have internal predecessors, (98), 31 states have call successors, (31), 28 states have call predecessors, (31), 24 states have return successors, (27), 23 states have call predecessors, (27), 27 states have call successors, (27) [2023-03-31 01:09:24,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 156 transitions. [2023-03-31 01:09:24,782 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 156 transitions. Word has length 47 [2023-03-31 01:09:24,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:09:24,782 INFO L495 AbstractCegarLoop]: Abstraction has 135 states and 156 transitions. [2023-03-31 01:09:24,782 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-03-31 01:09:24,782 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 156 transitions. [2023-03-31 01:09:24,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-03-31 01:09:24,784 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:09:24,784 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 01:09:24,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-03-31 01:09:24,784 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:09:24,785 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:09:24,785 INFO L85 PathProgramCache]: Analyzing trace with hash -307352215, now seen corresponding path program 1 times [2023-03-31 01:09:24,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:09:24,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850433864] [2023-03-31 01:09:24,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:09:24,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:09:24,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:09:24,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:09:24,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:09:24,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-03-31 01:09:24,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:09:24,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-03-31 01:09:24,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:09:24,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-03-31 01:09:24,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:09:25,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-03-31 01:09:25,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:09:25,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-03-31 01:09:25,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:09:25,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-03-31 01:09:25,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:09:25,037 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 01:09:25,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:09:25,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850433864] [2023-03-31 01:09:25,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [850433864] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:09:25,039 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:09:25,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-03-31 01:09:25,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182159195] [2023-03-31 01:09:25,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:09:25,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-03-31 01:09:25,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:09:25,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-03-31 01:09:25,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-03-31 01:09:25,042 INFO L87 Difference]: Start difference. First operand 135 states and 156 transitions. Second operand has 8 states, 8 states have (on average 4.0) internal successors, (32), 6 states have internal predecessors, (32), 4 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2023-03-31 01:09:25,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:09:25,604 INFO L93 Difference]: Finished difference Result 274 states and 333 transitions. [2023-03-31 01:09:25,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-03-31 01:09:25,605 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.0) internal successors, (32), 6 states have internal predecessors, (32), 4 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) Word has length 52 [2023-03-31 01:09:25,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:09:25,610 INFO L225 Difference]: With dead ends: 274 [2023-03-31 01:09:25,610 INFO L226 Difference]: Without dead ends: 163 [2023-03-31 01:09:25,616 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2023-03-31 01:09:25,618 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 217 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 642 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 220 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 753 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 642 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-03-31 01:09:25,620 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [220 Valid, 37 Invalid, 753 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 642 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-03-31 01:09:25,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2023-03-31 01:09:25,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 135. [2023-03-31 01:09:25,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 79 states have (on average 1.2278481012658229) internal successors, (97), 89 states have internal predecessors, (97), 31 states have call successors, (31), 28 states have call predecessors, (31), 24 states have return successors, (27), 23 states have call predecessors, (27), 27 states have call successors, (27) [2023-03-31 01:09:25,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 155 transitions. [2023-03-31 01:09:25,661 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 155 transitions. Word has length 52 [2023-03-31 01:09:25,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:09:25,662 INFO L495 AbstractCegarLoop]: Abstraction has 135 states and 155 transitions. [2023-03-31 01:09:25,662 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.0) internal successors, (32), 6 states have internal predecessors, (32), 4 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2023-03-31 01:09:25,662 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 155 transitions. [2023-03-31 01:09:25,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-03-31 01:09:25,667 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:09:25,667 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] [2023-03-31 01:09:25,668 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-03-31 01:09:25,668 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:09:25,668 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:09:25,668 INFO L85 PathProgramCache]: Analyzing trace with hash 1173247436, now seen corresponding path program 1 times [2023-03-31 01:09:25,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:09:25,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697482801] [2023-03-31 01:09:25,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:09:25,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:09:25,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:09:25,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:09:25,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:09:25,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-03-31 01:09:25,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:09:25,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-03-31 01:09:25,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:09:25,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-03-31 01:09:25,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:09:25,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-03-31 01:09:25,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:09:25,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-03-31 01:09:25,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:09:25,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-03-31 01:09:25,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:09:25,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-03-31 01:09:25,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:09:25,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-03-31 01:09:25,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:09:25,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-03-31 01:09:25,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:09:25,932 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 01:09:25,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:09:25,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697482801] [2023-03-31 01:09:25,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1697482801] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:09:25,932 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:09:25,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-03-31 01:09:25,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174185398] [2023-03-31 01:09:25,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:09:25,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-03-31 01:09:25,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:09:25,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-03-31 01:09:25,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-03-31 01:09:25,934 INFO L87 Difference]: Start difference. First operand 135 states and 155 transitions. Second operand has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 4 states have call successors, (16), 5 states have call predecessors, (16), 4 states have return successors, (10), 3 states have call predecessors, (10), 4 states have call successors, (10) [2023-03-31 01:09:26,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:09:26,514 INFO L93 Difference]: Finished difference Result 371 states and 455 transitions. [2023-03-31 01:09:26,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-03-31 01:09:26,515 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 4 states have call successors, (16), 5 states have call predecessors, (16), 4 states have return successors, (10), 3 states have call predecessors, (10), 4 states have call successors, (10) Word has length 65 [2023-03-31 01:09:26,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:09:26,517 INFO L225 Difference]: With dead ends: 371 [2023-03-31 01:09:26,517 INFO L226 Difference]: Without dead ends: 260 [2023-03-31 01:09:26,521 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2023-03-31 01:09:26,528 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 333 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 494 mSolverCounterSat, 210 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 338 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 704 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 210 IncrementalHoareTripleChecker+Valid, 494 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-03-31 01:09:26,529 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [338 Valid, 84 Invalid, 704 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [210 Valid, 494 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-03-31 01:09:26,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2023-03-31 01:09:26,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 217. [2023-03-31 01:09:26,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 130 states have (on average 1.2) internal successors, (156), 140 states have internal predecessors, (156), 43 states have call successors, (43), 41 states have call predecessors, (43), 43 states have return successors, (47), 42 states have call predecessors, (47), 39 states have call successors, (47) [2023-03-31 01:09:26,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 246 transitions. [2023-03-31 01:09:26,569 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 246 transitions. Word has length 65 [2023-03-31 01:09:26,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:09:26,569 INFO L495 AbstractCegarLoop]: Abstraction has 217 states and 246 transitions. [2023-03-31 01:09:26,570 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 4 states have call successors, (16), 5 states have call predecessors, (16), 4 states have return successors, (10), 3 states have call predecessors, (10), 4 states have call successors, (10) [2023-03-31 01:09:26,570 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 246 transitions. [2023-03-31 01:09:26,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-03-31 01:09:26,571 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:09:26,571 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] [2023-03-31 01:09:26,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-03-31 01:09:26,571 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:09:26,572 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:09:26,572 INFO L85 PathProgramCache]: Analyzing trace with hash 227188348, now seen corresponding path program 1 times [2023-03-31 01:09:26,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:09:26,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294031785] [2023-03-31 01:09:26,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:09:26,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:09:26,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:09:26,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:09:26,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:09:26,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-03-31 01:09:26,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:09:26,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-03-31 01:09:26,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:09:26,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-03-31 01:09:26,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:09:26,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-03-31 01:09:26,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:09:26,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-03-31 01:09:26,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:09:26,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-03-31 01:09:26,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:09:26,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-03-31 01:09:26,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:09:26,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-03-31 01:09:26,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:09:26,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-03-31 01:09:26,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:09:26,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-03-31 01:09:26,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:09:26,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-03-31 01:09:26,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:09:26,731 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 01:09:26,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:09:26,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294031785] [2023-03-31 01:09:26,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [294031785] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:09:26,755 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:09:26,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-03-31 01:09:26,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048288003] [2023-03-31 01:09:26,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:09:26,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-03-31 01:09:26,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:09:26,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-03-31 01:09:26,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-03-31 01:09:26,757 INFO L87 Difference]: Start difference. First operand 217 states and 246 transitions. Second operand has 8 states, 8 states have (on average 6.125) internal successors, (49), 5 states have internal predecessors, (49), 3 states have call successors, (18), 5 states have call predecessors, (18), 3 states have return successors, (12), 4 states have call predecessors, (12), 3 states have call successors, (12) [2023-03-31 01:09:27,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:09:27,597 INFO L93 Difference]: Finished difference Result 649 states and 794 transitions. [2023-03-31 01:09:27,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-03-31 01:09:27,598 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.125) internal successors, (49), 5 states have internal predecessors, (49), 3 states have call successors, (18), 5 states have call predecessors, (18), 3 states have return successors, (12), 4 states have call predecessors, (12), 3 states have call successors, (12) Word has length 79 [2023-03-31 01:09:27,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:09:27,603 INFO L225 Difference]: With dead ends: 649 [2023-03-31 01:09:27,603 INFO L226 Difference]: Without dead ends: 456 [2023-03-31 01:09:27,604 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2023-03-31 01:09:27,605 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 413 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 813 mSolverCounterSat, 230 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 435 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 1043 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 230 IncrementalHoareTripleChecker+Valid, 813 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-03-31 01:09:27,605 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [435 Valid, 92 Invalid, 1043 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [230 Valid, 813 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-03-31 01:09:27,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 456 states. [2023-03-31 01:09:27,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 456 to 389. [2023-03-31 01:09:27,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 389 states, 236 states have (on average 1.1864406779661016) internal successors, (280), 255 states have internal predecessors, (280), 74 states have call successors, (74), 70 states have call predecessors, (74), 78 states have return successors, (88), 76 states have call predecessors, (88), 70 states have call successors, (88) [2023-03-31 01:09:27,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 442 transitions. [2023-03-31 01:09:27,665 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 442 transitions. Word has length 79 [2023-03-31 01:09:27,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:09:27,665 INFO L495 AbstractCegarLoop]: Abstraction has 389 states and 442 transitions. [2023-03-31 01:09:27,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.125) internal successors, (49), 5 states have internal predecessors, (49), 3 states have call successors, (18), 5 states have call predecessors, (18), 3 states have return successors, (12), 4 states have call predecessors, (12), 3 states have call successors, (12) [2023-03-31 01:09:27,665 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 442 transitions. [2023-03-31 01:09:27,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-03-31 01:09:27,667 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:09:27,667 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 01:09:27,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-03-31 01:09:27,668 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:09:27,668 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:09:27,668 INFO L85 PathProgramCache]: Analyzing trace with hash 1144006592, now seen corresponding path program 1 times [2023-03-31 01:09:27,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:09:27,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836174826] [2023-03-31 01:09:27,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:09:27,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:09:27,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:09:27,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:09:27,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:09:27,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-03-31 01:09:27,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:09:27,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-03-31 01:09:27,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:09:27,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-03-31 01:09:27,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:09:27,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-03-31 01:09:27,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:09:27,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-03-31 01:09:27,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:09:27,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-03-31 01:09:27,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:09:27,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-03-31 01:09:27,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:09:27,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-03-31 01:09:27,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:09:27,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-03-31 01:09:27,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:09:27,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-03-31 01:09:27,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:09:27,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-03-31 01:09:27,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:09:27,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-03-31 01:09:27,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:09:27,957 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 01:09:27,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:09:27,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836174826] [2023-03-31 01:09:27,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1836174826] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:09:27,958 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:09:27,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-03-31 01:09:27,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881663675] [2023-03-31 01:09:27,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:09:27,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-03-31 01:09:27,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:09:27,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-03-31 01:09:27,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-03-31 01:09:27,960 INFO L87 Difference]: Start difference. First operand 389 states and 442 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), 3 states have call predecessors, (13), 2 states have call successors, (13) [2023-03-31 01:09:28,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:09:28,774 INFO L93 Difference]: Finished difference Result 498 states and 622 transitions. [2023-03-31 01:09:28,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-03-31 01:09:28,775 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), 3 states have call predecessors, (13), 2 states have call successors, (13) Word has length 83 [2023-03-31 01:09:28,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:09:28,783 INFO L225 Difference]: With dead ends: 498 [2023-03-31 01:09:28,783 INFO L226 Difference]: Without dead ends: 495 [2023-03-31 01:09:28,784 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2023-03-31 01:09:28,785 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 424 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 916 mSolverCounterSat, 244 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 438 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 1160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 244 IncrementalHoareTripleChecker+Valid, 916 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-03-31 01:09:28,785 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [438 Valid, 93 Invalid, 1160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [244 Valid, 916 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-03-31 01:09:28,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 495 states. [2023-03-31 01:09:28,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 495 to 389. [2023-03-31 01:09:28,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 389 states, 236 states have (on average 1.1822033898305084) internal successors, (279), 255 states have internal predecessors, (279), 74 states have call successors, (74), 70 states have call predecessors, (74), 78 states have return successors, (88), 76 states have call predecessors, (88), 70 states have call successors, (88) [2023-03-31 01:09:28,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 441 transitions. [2023-03-31 01:09:28,847 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 441 transitions. Word has length 83 [2023-03-31 01:09:28,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:09:28,848 INFO L495 AbstractCegarLoop]: Abstraction has 389 states and 441 transitions. [2023-03-31 01:09:28,848 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), 3 states have call predecessors, (13), 2 states have call successors, (13) [2023-03-31 01:09:28,848 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 441 transitions. [2023-03-31 01:09:28,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-03-31 01:09:28,853 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:09:28,853 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 01:09:28,853 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-03-31 01:09:28,853 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:09:28,854 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:09:28,854 INFO L85 PathProgramCache]: Analyzing trace with hash -34795221, now seen corresponding path program 1 times [2023-03-31 01:09:28,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:09:28,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670004129] [2023-03-31 01:09:28,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:09:28,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:09:28,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:09:28,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:09:28,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:09:28,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-03-31 01:09:28,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:09:28,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-03-31 01:09:28,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:09:28,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-03-31 01:09:28,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:09:28,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-03-31 01:09:28,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:09:28,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-03-31 01:09:28,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:09:28,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-03-31 01:09:28,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:09:28,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-03-31 01:09:28,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:09:29,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-03-31 01:09:29,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:09:29,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-03-31 01:09:29,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:09:29,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-03-31 01:09:29,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:09:29,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-03-31 01:09:29,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:09:29,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-03-31 01:09:29,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:09:29,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-03-31 01:09:29,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:09:29,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-03-31 01:09:29,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:09:29,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-03-31 01:09:29,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:09:29,100 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-03-31 01:09:29,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:09:29,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670004129] [2023-03-31 01:09:29,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [670004129] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:09:29,100 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:09:29,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-03-31 01:09:29,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564061262] [2023-03-31 01:09:29,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:09:29,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-03-31 01:09:29,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:09:29,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-03-31 01:09:29,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-03-31 01:09:29,102 INFO L87 Difference]: Start difference. First operand 389 states and 441 transitions. Second operand has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 5 states have internal predecessors, (59), 2 states have call successors, (22), 5 states have call predecessors, (22), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2023-03-31 01:09:29,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:09:29,725 INFO L93 Difference]: Finished difference Result 868 states and 1072 transitions. [2023-03-31 01:09:29,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-03-31 01:09:29,726 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 5 states have internal predecessors, (59), 2 states have call successors, (22), 5 states have call predecessors, (22), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) Word has length 99 [2023-03-31 01:09:29,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:09:29,728 INFO L225 Difference]: With dead ends: 868 [2023-03-31 01:09:29,729 INFO L226 Difference]: Without dead ends: 503 [2023-03-31 01:09:29,730 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2023-03-31 01:09:29,730 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 167 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 899 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 190 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 967 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 899 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-03-31 01:09:29,731 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [190 Valid, 65 Invalid, 967 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 899 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-03-31 01:09:29,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 503 states. [2023-03-31 01:09:29,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 503 to 399. [2023-03-31 01:09:29,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 399 states, 244 states have (on average 1.1762295081967213) internal successors, (287), 263 states have internal predecessors, (287), 74 states have call successors, (74), 70 states have call predecessors, (74), 80 states have return successors, (90), 78 states have call predecessors, (90), 70 states have call successors, (90) [2023-03-31 01:09:29,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 399 states to 399 states and 451 transitions. [2023-03-31 01:09:29,773 INFO L78 Accepts]: Start accepts. Automaton has 399 states and 451 transitions. Word has length 99 [2023-03-31 01:09:29,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:09:29,774 INFO L495 AbstractCegarLoop]: Abstraction has 399 states and 451 transitions. [2023-03-31 01:09:29,774 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 5 states have internal predecessors, (59), 2 states have call successors, (22), 5 states have call predecessors, (22), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2023-03-31 01:09:29,774 INFO L276 IsEmpty]: Start isEmpty. Operand 399 states and 451 transitions. [2023-03-31 01:09:29,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-03-31 01:09:29,778 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:09:29,778 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 01:09:29,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-03-31 01:09:29,779 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:09:29,779 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:09:29,779 INFO L85 PathProgramCache]: Analyzing trace with hash 858691117, now seen corresponding path program 1 times [2023-03-31 01:09:29,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:09:29,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863017543] [2023-03-31 01:09:29,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:09:29,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:09:29,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:09:29,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:09:29,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:09:29,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-03-31 01:09:29,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:09:29,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-03-31 01:09:29,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:09:29,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-03-31 01:09:29,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:09:29,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-03-31 01:09:29,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:09:29,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-03-31 01:09:29,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:09:29,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-03-31 01:09:29,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:09:29,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-03-31 01:09:29,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:09:29,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-03-31 01:09:29,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:09:30,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-03-31 01:09:30,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:09:30,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-03-31 01:09:30,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:09:30,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-03-31 01:09:30,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:09:30,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-03-31 01:09:30,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:09:30,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-03-31 01:09:30,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:09:30,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-03-31 01:09:30,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:09:30,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-03-31 01:09:30,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:09:30,032 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-03-31 01:09:30,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:09:30,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863017543] [2023-03-31 01:09:30,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [863017543] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:09:30,032 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:09:30,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-03-31 01:09:30,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466416435] [2023-03-31 01:09:30,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:09:30,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-03-31 01:09:30,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:09:30,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-03-31 01:09:30,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2023-03-31 01:09:30,035 INFO L87 Difference]: Start difference. First operand 399 states and 451 transitions. Second operand has 11 states, 11 states have (on average 5.363636363636363) internal successors, (59), 6 states have internal predecessors, (59), 2 states have call successors, (22), 5 states have call predecessors, (22), 4 states have return successors, (16), 4 states have call predecessors, (16), 2 states have call successors, (16) [2023-03-31 01:09:30,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:09:30,878 INFO L93 Difference]: Finished difference Result 888 states and 1094 transitions. [2023-03-31 01:09:30,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-03-31 01:09:30,879 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.363636363636363) internal successors, (59), 6 states have internal predecessors, (59), 2 states have call successors, (22), 5 states have call predecessors, (22), 4 states have return successors, (16), 4 states have call predecessors, (16), 2 states have call successors, (16) Word has length 99 [2023-03-31 01:09:30,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:09:30,882 INFO L225 Difference]: With dead ends: 888 [2023-03-31 01:09:30,882 INFO L226 Difference]: Without dead ends: 513 [2023-03-31 01:09:30,883 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2023-03-31 01:09:30,885 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 340 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 1184 mSolverCounterSat, 186 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 364 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 1370 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 186 IncrementalHoareTripleChecker+Valid, 1184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-03-31 01:09:30,885 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [364 Valid, 73 Invalid, 1370 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [186 Valid, 1184 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-03-31 01:09:30,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 513 states. [2023-03-31 01:09:30,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 513 to 407. [2023-03-31 01:09:30,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 407 states, 250 states have (on average 1.172) internal successors, (293), 269 states have internal predecessors, (293), 74 states have call successors, (74), 70 states have call predecessors, (74), 82 states have return successors, (92), 80 states have call predecessors, (92), 70 states have call successors, (92) [2023-03-31 01:09:30,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 459 transitions. [2023-03-31 01:09:30,938 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 459 transitions. Word has length 99 [2023-03-31 01:09:30,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:09:30,938 INFO L495 AbstractCegarLoop]: Abstraction has 407 states and 459 transitions. [2023-03-31 01:09:30,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.363636363636363) internal successors, (59), 6 states have internal predecessors, (59), 2 states have call successors, (22), 5 states have call predecessors, (22), 4 states have return successors, (16), 4 states have call predecessors, (16), 2 states have call successors, (16) [2023-03-31 01:09:30,938 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 459 transitions. [2023-03-31 01:09:30,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-03-31 01:09:30,944 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:09:30,944 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 01:09:30,944 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-03-31 01:09:30,944 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:09:30,945 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:09:30,945 INFO L85 PathProgramCache]: Analyzing trace with hash 850931758, now seen corresponding path program 1 times [2023-03-31 01:09:30,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:09:30,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573290066] [2023-03-31 01:09:30,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:09:30,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:09:30,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:09:31,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:09:31,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:09:31,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-03-31 01:09:31,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:09:31,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-03-31 01:09:31,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:09:31,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-03-31 01:09:31,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:09:31,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-03-31 01:09:31,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:09:31,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-03-31 01:09:31,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:09:31,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-03-31 01:09:31,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:09:31,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-03-31 01:09:31,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:09:31,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-03-31 01:09:31,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:09:31,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-03-31 01:09:31,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:09:31,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-03-31 01:09:31,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:09:31,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-03-31 01:09:31,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:09:31,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-03-31 01:09:31,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:09:31,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-03-31 01:09:31,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:09:31,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-03-31 01:09:31,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:09:31,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-03-31 01:09:31,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:09:31,150 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-03-31 01:09:31,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:09:31,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573290066] [2023-03-31 01:09:31,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1573290066] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:09:31,150 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:09:31,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-03-31 01:09:31,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023363798] [2023-03-31 01:09:31,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:09:31,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-03-31 01:09:31,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:09:31,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-03-31 01:09:31,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-03-31 01:09:31,152 INFO L87 Difference]: Start difference. First operand 407 states and 459 transitions. Second operand has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 4 states have internal predecessors, (59), 4 states have call successors, (22), 6 states have call predecessors, (22), 3 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) [2023-03-31 01:09:31,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:09:31,913 INFO L93 Difference]: Finished difference Result 1230 states and 1568 transitions. [2023-03-31 01:09:31,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-03-31 01:09:31,914 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 4 states have internal predecessors, (59), 4 states have call successors, (22), 6 states have call predecessors, (22), 3 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) Word has length 99 [2023-03-31 01:09:31,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:09:31,918 INFO L225 Difference]: With dead ends: 1230 [2023-03-31 01:09:31,918 INFO L226 Difference]: Without dead ends: 847 [2023-03-31 01:09:31,919 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 39 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2023-03-31 01:09:31,920 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 703 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 565 mSolverCounterSat, 440 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 720 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 1005 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 440 IncrementalHoareTripleChecker+Valid, 565 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-03-31 01:09:31,920 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [720 Valid, 97 Invalid, 1005 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [440 Valid, 565 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-03-31 01:09:31,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 847 states. [2023-03-31 01:09:32,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 847 to 727. [2023-03-31 01:09:32,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 727 states, 456 states have (on average 1.162280701754386) internal successors, (530), 493 states have internal predecessors, (530), 134 states have call successors, (134), 126 states have call predecessors, (134), 136 states have return successors, (189), 136 states have call predecessors, (189), 130 states have call successors, (189) [2023-03-31 01:09:32,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 727 states to 727 states and 853 transitions. [2023-03-31 01:09:32,015 INFO L78 Accepts]: Start accepts. Automaton has 727 states and 853 transitions. Word has length 99 [2023-03-31 01:09:32,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:09:32,017 INFO L495 AbstractCegarLoop]: Abstraction has 727 states and 853 transitions. [2023-03-31 01:09:32,017 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 4 states have internal predecessors, (59), 4 states have call successors, (22), 6 states have call predecessors, (22), 3 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) [2023-03-31 01:09:32,017 INFO L276 IsEmpty]: Start isEmpty. Operand 727 states and 853 transitions. [2023-03-31 01:09:32,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-03-31 01:09:32,019 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:09:32,019 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 01:09:32,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-03-31 01:09:32,020 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:09:32,020 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:09:32,021 INFO L85 PathProgramCache]: Analyzing trace with hash 1446374548, now seen corresponding path program 1 times [2023-03-31 01:09:32,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:09:32,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470002718] [2023-03-31 01:09:32,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:09:32,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:09:32,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:09:32,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:09:32,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:09:32,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-03-31 01:09:32,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:09:32,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-03-31 01:09:32,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:09:32,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-03-31 01:09:32,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:09:32,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-03-31 01:09:32,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:09:32,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-03-31 01:09:32,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:09:32,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-03-31 01:09:32,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:09:32,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-03-31 01:09:32,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:09:32,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-03-31 01:09:32,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:09:32,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-03-31 01:09:32,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:09:32,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-03-31 01:09:32,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:09:32,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-03-31 01:09:32,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:09:32,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-03-31 01:09:32,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:09:32,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-03-31 01:09:32,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:09:32,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-03-31 01:09:32,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:09:32,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-03-31 01:09:32,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:09:32,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-03-31 01:09:32,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:09:32,341 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-03-31 01:09:32,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:09:32,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470002718] [2023-03-31 01:09:32,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1470002718] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-31 01:09:32,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [607702927] [2023-03-31 01:09:32,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:09:32,341 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 01:09:32,342 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 01:09:32,347 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 01:09:32,349 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 01:09:32,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:09:32,481 INFO L262 TraceCheckSpWp]: Trace formula consists of 404 conjuncts, 9 conjunts are in the unsatisfiable core [2023-03-31 01:09:32,489 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-31 01:09:32,732 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 01:09:32,733 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-03-31 01:09:32,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [607702927] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:09:32,733 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-03-31 01:09:32,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [17] total 22 [2023-03-31 01:09:32,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495082004] [2023-03-31 01:09:32,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:09:32,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-03-31 01:09:32,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:09:32,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-03-31 01:09:32,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=405, Unknown=0, NotChecked=0, Total=462 [2023-03-31 01:09:32,735 INFO L87 Difference]: Start difference. First operand 727 states and 853 transitions. Second operand has 8 states, 8 states have (on average 7.875) internal successors, (63), 6 states have internal predecessors, (63), 3 states have call successors, (23), 3 states have call predecessors, (23), 5 states have return successors, (17), 5 states have call predecessors, (17), 3 states have call successors, (17) [2023-03-31 01:09:33,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:09:33,008 INFO L93 Difference]: Finished difference Result 1396 states and 1648 transitions. [2023-03-31 01:09:33,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-03-31 01:09:33,008 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.875) internal successors, (63), 6 states have internal predecessors, (63), 3 states have call successors, (23), 3 states have call predecessors, (23), 5 states have return successors, (17), 5 states have call predecessors, (17), 3 states have call successors, (17) Word has length 103 [2023-03-31 01:09:33,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:09:33,012 INFO L225 Difference]: With dead ends: 1396 [2023-03-31 01:09:33,012 INFO L226 Difference]: Without dead ends: 693 [2023-03-31 01:09:33,014 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=57, Invalid=405, Unknown=0, NotChecked=0, Total=462 [2023-03-31 01:09:33,015 INFO L413 NwaCegarLoop]: 263 mSDtfsCounter, 84 mSDsluCounter, 801 mSDsCounter, 0 mSdLazyCounter, 250 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 1064 SdHoareTripleChecker+Invalid, 251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-03-31 01:09:33,016 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 1064 Invalid, 251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 250 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-03-31 01:09:33,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 693 states. [2023-03-31 01:09:33,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 693 to 693. [2023-03-31 01:09:33,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 693 states, 435 states have (on average 1.1494252873563218) internal successors, (500), 471 states have internal predecessors, (500), 129 states have call successors, (129), 121 states have call predecessors, (129), 128 states have return successors, (170), 128 states have call predecessors, (170), 125 states have call successors, (170) [2023-03-31 01:09:33,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 693 states to 693 states and 799 transitions. [2023-03-31 01:09:33,114 INFO L78 Accepts]: Start accepts. Automaton has 693 states and 799 transitions. Word has length 103 [2023-03-31 01:09:33,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:09:33,115 INFO L495 AbstractCegarLoop]: Abstraction has 693 states and 799 transitions. [2023-03-31 01:09:33,116 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.875) internal successors, (63), 6 states have internal predecessors, (63), 3 states have call successors, (23), 3 states have call predecessors, (23), 5 states have return successors, (17), 5 states have call predecessors, (17), 3 states have call successors, (17) [2023-03-31 01:09:33,116 INFO L276 IsEmpty]: Start isEmpty. Operand 693 states and 799 transitions. [2023-03-31 01:09:33,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2023-03-31 01:09:33,118 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:09:33,118 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:09:33,127 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 01:09:33,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-03-31 01:09:33,324 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:09:33,325 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:09:33,325 INFO L85 PathProgramCache]: Analyzing trace with hash -1932590102, now seen corresponding path program 1 times [2023-03-31 01:09:33,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:09:33,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192693141] [2023-03-31 01:09:33,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:09:33,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:09:33,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:09:33,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:09:33,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:09:33,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-03-31 01:09:33,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:09:33,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-03-31 01:09:33,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:09:33,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-03-31 01:09:33,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:09:33,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-03-31 01:09:33,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:09:33,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-03-31 01:09:33,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:09:33,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-03-31 01:09:33,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:09:33,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-03-31 01:09:33,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:09:33,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-03-31 01:09:33,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:09:33,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-03-31 01:09:33,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:09:33,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-03-31 01:09:33,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:09:33,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-03-31 01:09:33,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:09:33,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-03-31 01:09:33,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:09:33,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-03-31 01:09:33,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:09:33,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-03-31 01:09:33,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:09:33,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-03-31 01:09:33,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:09:33,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-03-31 01:09:33,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:09:33,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-03-31 01:09:33,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:09:33,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-03-31 01:09:33,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:09:33,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-03-31 01:09:33,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:09:33,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-03-31 01:09:33,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:09:33,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-03-31 01:09:33,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:09:33,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-03-31 01:09:33,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:09:33,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-03-31 01:09:33,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:09:33,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2023-03-31 01:09:33,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:09:33,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2023-03-31 01:09:33,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:09:33,705 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 17 proven. 5 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-03-31 01:09:33,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:09:33,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192693141] [2023-03-31 01:09:33,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [192693141] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-31 01:09:33,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [740022306] [2023-03-31 01:09:33,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:09:33,706 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 01:09:33,706 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 01:09:33,707 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 01:09:33,710 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 01:09:33,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:09:33,845 INFO L262 TraceCheckSpWp]: Trace formula consists of 529 conjuncts, 15 conjunts are in the unsatisfiable core [2023-03-31 01:09:33,849 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-31 01:09:33,990 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-03-31 01:09:33,991 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-03-31 01:09:33,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [740022306] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:09:33,991 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-03-31 01:09:33,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [14] total 18 [2023-03-31 01:09:33,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277527113] [2023-03-31 01:09:33,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:09:33,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-03-31 01:09:33,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:09:33,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-03-31 01:09:33,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=251, Unknown=0, NotChecked=0, Total=306 [2023-03-31 01:09:33,993 INFO L87 Difference]: Start difference. First operand 693 states and 799 transitions. Second operand has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 7 states have internal predecessors, (97), 4 states have call successors, (32), 5 states have call predecessors, (32), 5 states have return successors, (26), 5 states have call predecessors, (26), 4 states have call successors, (26) [2023-03-31 01:09:34,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:09:34,899 INFO L93 Difference]: Finished difference Result 1790 states and 2299 transitions. [2023-03-31 01:09:34,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-03-31 01:09:34,900 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 7 states have internal predecessors, (97), 4 states have call successors, (32), 5 states have call predecessors, (32), 5 states have return successors, (26), 5 states have call predecessors, (26), 4 states have call successors, (26) Word has length 157 [2023-03-31 01:09:34,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:09:34,907 INFO L225 Difference]: With dead ends: 1790 [2023-03-31 01:09:34,907 INFO L226 Difference]: Without dead ends: 1253 [2023-03-31 01:09:34,911 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 205 SyntacticMatches, 5 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=107, Invalid=493, Unknown=0, NotChecked=0, Total=600 [2023-03-31 01:09:34,911 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 483 mSDsluCounter, 235 mSDsCounter, 0 mSdLazyCounter, 934 mSolverCounterSat, 266 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 501 SdHoareTripleChecker+Valid, 299 SdHoareTripleChecker+Invalid, 1200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 266 IncrementalHoareTripleChecker+Valid, 934 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-03-31 01:09:34,911 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [501 Valid, 299 Invalid, 1200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [266 Valid, 934 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-03-31 01:09:34,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1253 states. [2023-03-31 01:09:35,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1253 to 987. [2023-03-31 01:09:35,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 987 states, 619 states have (on average 1.1518578352180937) internal successors, (713), 669 states have internal predecessors, (713), 183 states have call successors, (183), 171 states have call predecessors, (183), 184 states have return successors, (254), 182 states have call predecessors, (254), 179 states have call successors, (254) [2023-03-31 01:09:35,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 987 states to 987 states and 1150 transitions. [2023-03-31 01:09:35,072 INFO L78 Accepts]: Start accepts. Automaton has 987 states and 1150 transitions. Word has length 157 [2023-03-31 01:09:35,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:09:35,072 INFO L495 AbstractCegarLoop]: Abstraction has 987 states and 1150 transitions. [2023-03-31 01:09:35,073 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 7 states have internal predecessors, (97), 4 states have call successors, (32), 5 states have call predecessors, (32), 5 states have return successors, (26), 5 states have call predecessors, (26), 4 states have call successors, (26) [2023-03-31 01:09:35,073 INFO L276 IsEmpty]: Start isEmpty. Operand 987 states and 1150 transitions. [2023-03-31 01:09:35,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2023-03-31 01:09:35,075 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:09:35,075 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:09:35,081 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 01:09:35,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-03-31 01:09:35,282 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:09:35,282 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:09:35,282 INFO L85 PathProgramCache]: Analyzing trace with hash -1657830488, now seen corresponding path program 1 times [2023-03-31 01:09:35,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:09:35,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258630473] [2023-03-31 01:09:35,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:09:35,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:09:35,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:09:35,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:09:35,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:09:35,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-03-31 01:09:35,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:09:35,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-03-31 01:09:35,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:09:35,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-03-31 01:09:35,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:09:35,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-03-31 01:09:35,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:09:35,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-03-31 01:09:35,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:09:35,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-03-31 01:09:35,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:09:35,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-03-31 01:09:35,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:09:35,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-03-31 01:09:35,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:09:35,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-03-31 01:09:35,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:09:35,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-03-31 01:09:35,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:09:35,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-03-31 01:09:35,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:09:35,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-03-31 01:09:35,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:09:35,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-03-31 01:09:35,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:09:35,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-03-31 01:09:35,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:09:35,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-03-31 01:09:35,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:09:35,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-03-31 01:09:35,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:09:35,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-03-31 01:09:35,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:09:35,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-03-31 01:09:35,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:09:35,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-03-31 01:09:35,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:09:35,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-03-31 01:09:35,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:09:35,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-03-31 01:09:35,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:09:35,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-03-31 01:09:35,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:09:35,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-03-31 01:09:35,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:09:35,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2023-03-31 01:09:35,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:09:35,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2023-03-31 01:09:35,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:09:35,548 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-03-31 01:09:35,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:09:35,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258630473] [2023-03-31 01:09:35,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1258630473] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-31 01:09:35,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [540313172] [2023-03-31 01:09:35,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:09:35,549 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 01:09:35,549 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 01:09:35,550 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-03-31 01:09:35,554 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-03-31 01:09:35,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:09:35,680 INFO L262 TraceCheckSpWp]: Trace formula consists of 530 conjuncts, 6 conjunts are in the unsatisfiable core [2023-03-31 01:09:35,688 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-31 01:09:35,710 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-03-31 01:09:35,710 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-03-31 01:09:35,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [540313172] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:09:35,710 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-03-31 01:09:35,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [14] total 14 [2023-03-31 01:09:35,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487644086] [2023-03-31 01:09:35,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:09:35,711 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-03-31 01:09:35,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:09:35,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-03-31 01:09:35,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2023-03-31 01:09:35,712 INFO L87 Difference]: Start difference. First operand 987 states and 1150 transitions. Second operand has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 5 states have internal predecessors, (88), 2 states have call successors, (30), 2 states have call predecessors, (30), 3 states have return successors, (26), 3 states have call predecessors, (26), 2 states have call successors, (26) [2023-03-31 01:09:35,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:09:35,794 INFO L93 Difference]: Finished difference Result 1399 states and 1627 transitions. [2023-03-31 01:09:35,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-03-31 01:09:35,795 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 5 states have internal predecessors, (88), 2 states have call successors, (30), 2 states have call predecessors, (30), 3 states have return successors, (26), 3 states have call predecessors, (26), 2 states have call successors, (26) Word has length 157 [2023-03-31 01:09:35,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:09:35,798 INFO L225 Difference]: With dead ends: 1399 [2023-03-31 01:09:35,798 INFO L226 Difference]: Without dead ends: 0 [2023-03-31 01:09:35,800 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2023-03-31 01:09:35,801 INFO L413 NwaCegarLoop]: 143 mSDtfsCounter, 4 mSDsluCounter, 563 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 706 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-03-31 01:09:35,801 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 706 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-03-31 01:09:35,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-03-31 01:09:35,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-03-31 01:09:35,802 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 01:09:35,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-03-31 01:09:35,803 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 157 [2023-03-31 01:09:35,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:09:35,803 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-03-31 01:09:35,803 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 5 states have internal predecessors, (88), 2 states have call successors, (30), 2 states have call predecessors, (30), 3 states have return successors, (26), 3 states have call predecessors, (26), 2 states have call successors, (26) [2023-03-31 01:09:35,803 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-03-31 01:09:35,803 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-03-31 01:09:35,806 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-03-31 01:09:35,815 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-03-31 01:09:36,012 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 01:09:36,014 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.