/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -tc ../../../trunk/examples/toolchains/AutomizerC.xml -i ../sv-benchmarks/c/product-lines/minepump_spec2_product50.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-03-31 01:11:07,250 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-03-31 01:11:07,252 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-03-31 01:11:07,273 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-03-31 01:11:07,273 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-03-31 01:11:07,274 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-03-31 01:11:07,275 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-03-31 01:11:07,277 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-03-31 01:11:07,278 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-03-31 01:11:07,278 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-03-31 01:11:07,279 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-03-31 01:11:07,279 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-03-31 01:11:07,280 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-03-31 01:11:07,280 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-03-31 01:11:07,281 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-03-31 01:11:07,282 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-03-31 01:11:07,282 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-03-31 01:11:07,283 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-03-31 01:11:07,284 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-03-31 01:11:07,285 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-03-31 01:11:07,286 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-03-31 01:11:07,287 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-03-31 01:11:07,287 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-03-31 01:11:07,288 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-03-31 01:11:07,290 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-03-31 01:11:07,290 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-03-31 01:11:07,290 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-03-31 01:11:07,291 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-03-31 01:11:07,291 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-03-31 01:11:07,291 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-03-31 01:11:07,292 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-03-31 01:11:07,292 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-03-31 01:11:07,292 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-03-31 01:11:07,293 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-03-31 01:11:07,294 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-03-31 01:11:07,294 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-03-31 01:11:07,294 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-03-31 01:11:07,294 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-03-31 01:11:07,295 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-03-31 01:11:07,295 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-03-31 01:11:07,296 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-03-31 01:11:07,297 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 01:11:07,311 INFO L113 SettingsManager]: Loading preferences was successful [2023-03-31 01:11:07,311 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-03-31 01:11:07,311 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-03-31 01:11:07,311 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-03-31 01:11:07,312 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-03-31 01:11:07,312 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-03-31 01:11:07,312 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-03-31 01:11:07,312 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-03-31 01:11:07,313 INFO L138 SettingsManager]: * Use SBE=true [2023-03-31 01:11:07,313 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-03-31 01:11:07,313 INFO L138 SettingsManager]: * sizeof long=4 [2023-03-31 01:11:07,313 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-03-31 01:11:07,313 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-03-31 01:11:07,313 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-03-31 01:11:07,313 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-03-31 01:11:07,313 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-03-31 01:11:07,313 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-03-31 01:11:07,314 INFO L138 SettingsManager]: * sizeof long double=12 [2023-03-31 01:11:07,314 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-03-31 01:11:07,314 INFO L138 SettingsManager]: * Use constant arrays=true [2023-03-31 01:11:07,314 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-03-31 01:11:07,314 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-03-31 01:11:07,314 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-03-31 01:11:07,314 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-03-31 01:11:07,314 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-31 01:11:07,314 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-03-31 01:11:07,315 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-03-31 01:11:07,315 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-03-31 01:11:07,315 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-03-31 01:11:07,315 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-03-31 01:11:07,315 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-03-31 01:11:07,315 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-03-31 01:11:07,315 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-03-31 01:11:07,315 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-03-31 01:11:07,316 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-03-31 01:11:07,316 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-03-31 01:11:07,474 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-03-31 01:11:07,514 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-03-31 01:11:07,516 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-03-31 01:11:07,517 INFO L271 PluginConnector]: Initializing CDTParser... [2023-03-31 01:11:07,521 INFO L275 PluginConnector]: CDTParser initialized [2023-03-31 01:11:07,522 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/minepump_spec2_product50.cil.c [2023-03-31 01:11:08,998 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-03-31 01:11:09,398 INFO L351 CDTParser]: Found 1 translation units. [2023-03-31 01:11:09,398 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec2_product50.cil.c [2023-03-31 01:11:09,409 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/110c1d93b/6d72a97f03bb499b9f36e0c991a063a7/FLAGf9d0c894e [2023-03-31 01:11:09,421 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/110c1d93b/6d72a97f03bb499b9f36e0c991a063a7 [2023-03-31 01:11:09,424 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-03-31 01:11:09,425 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-03-31 01:11:09,427 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-03-31 01:11:09,427 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-03-31 01:11:09,429 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-03-31 01:11:09,430 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.03 01:11:09" (1/1) ... [2023-03-31 01:11:09,430 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e4ba976 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:11:09, skipping insertion in model container [2023-03-31 01:11:09,430 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.03 01:11:09" (1/1) ... [2023-03-31 01:11:09,436 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-03-31 01:11:09,479 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-03-31 01:11:09,754 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec2_product50.cil.c[18939,18952] [2023-03-31 01:11:09,758 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-31 01:11:09,767 INFO L203 MainTranslator]: Completed pre-run [2023-03-31 01:11:09,825 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec2_product50.cil.c[18939,18952] [2023-03-31 01:11:09,826 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-31 01:11:09,839 INFO L208 MainTranslator]: Completed translation [2023-03-31 01:11:09,839 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:11:09 WrapperNode [2023-03-31 01:11:09,839 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-03-31 01:11:09,840 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-03-31 01:11:09,840 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-03-31 01:11:09,840 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-03-31 01:11:09,852 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:11:09" (1/1) ... [2023-03-31 01:11:09,852 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:11:09" (1/1) ... [2023-03-31 01:11:09,872 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:11:09" (1/1) ... [2023-03-31 01:11:09,872 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:11:09" (1/1) ... [2023-03-31 01:11:09,907 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:11:09" (1/1) ... [2023-03-31 01:11:09,915 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:11:09" (1/1) ... [2023-03-31 01:11:09,917 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:11:09" (1/1) ... [2023-03-31 01:11:09,919 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:11:09" (1/1) ... [2023-03-31 01:11:09,923 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-03-31 01:11:09,924 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-03-31 01:11:09,925 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-03-31 01:11:09,925 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-03-31 01:11:09,925 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:11:09" (1/1) ... [2023-03-31 01:11:09,938 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-31 01:11:09,946 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 01:11:09,970 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 01:11:09,983 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 01:11:10,017 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-03-31 01:11:10,017 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-03-31 01:11:10,020 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2023-03-31 01:11:10,020 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-03-31 01:11:10,020 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2023-03-31 01:11:10,020 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2023-03-31 01:11:10,020 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2023-03-31 01:11:10,021 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2023-03-31 01:11:10,021 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2023-03-31 01:11:10,021 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2023-03-31 01:11:10,021 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2023-03-31 01:11:10,024 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2023-03-31 01:11:10,024 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-03-31 01:11:10,024 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2023-03-31 01:11:10,024 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2023-03-31 01:11:10,024 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2023-03-31 01:11:10,025 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2023-03-31 01:11:10,025 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2023-03-31 01:11:10,025 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2023-03-31 01:11:10,025 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2023-03-31 01:11:10,025 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2023-03-31 01:11:10,025 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2023-03-31 01:11:10,026 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2023-03-31 01:11:10,026 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2023-03-31 01:11:10,026 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2023-03-31 01:11:10,026 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2023-03-31 01:11:10,026 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2023-03-31 01:11:10,026 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2023-03-31 01:11:10,026 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2023-03-31 01:11:10,026 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2023-03-31 01:11:10,026 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2023-03-31 01:11:10,026 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2023-03-31 01:11:10,026 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2023-03-31 01:11:10,026 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2023-03-31 01:11:10,026 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2023-03-31 01:11:10,027 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2023-03-31 01:11:10,027 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2023-03-31 01:11:10,027 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2023-03-31 01:11:10,027 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2023-03-31 01:11:10,027 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2023-03-31 01:11:10,027 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2023-03-31 01:11:10,027 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2023-03-31 01:11:10,027 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2023-03-31 01:11:10,028 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-03-31 01:11:10,028 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-03-31 01:11:10,028 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-03-31 01:11:10,028 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-03-31 01:11:10,028 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-03-31 01:11:10,028 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2023-03-31 01:11:10,028 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2023-03-31 01:11:10,028 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2023-03-31 01:11:10,029 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2023-03-31 01:11:10,029 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2023-03-31 01:11:10,029 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2023-03-31 01:11:10,030 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2023-03-31 01:11:10,030 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2023-03-31 01:11:10,030 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2023-03-31 01:11:10,030 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2023-03-31 01:11:10,030 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2023-03-31 01:11:10,030 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2023-03-31 01:11:10,031 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2023-03-31 01:11:10,031 INFO L130 BoogieDeclarations]: Found specification of procedure test [2023-03-31 01:11:10,031 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2023-03-31 01:11:10,031 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-03-31 01:11:10,031 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2023-03-31 01:11:10,031 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2023-03-31 01:11:10,031 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2023-03-31 01:11:10,031 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2023-03-31 01:11:10,031 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2023-03-31 01:11:10,031 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2023-03-31 01:11:10,032 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2023-03-31 01:11:10,032 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2023-03-31 01:11:10,032 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2023-03-31 01:11:10,032 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2023-03-31 01:11:10,032 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2023-03-31 01:11:10,032 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2023-03-31 01:11:10,032 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2023-03-31 01:11:10,032 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2023-03-31 01:11:10,032 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2023-03-31 01:11:10,033 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2023-03-31 01:11:10,033 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2023-03-31 01:11:10,033 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2023-03-31 01:11:10,033 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2023-03-31 01:11:10,033 INFO L130 BoogieDeclarations]: Found specification of procedure free [2023-03-31 01:11:10,033 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2023-03-31 01:11:10,033 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-03-31 01:11:10,034 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-03-31 01:11:10,034 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-03-31 01:11:10,034 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-03-31 01:11:10,034 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2023-03-31 01:11:10,034 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-03-31 01:11:10,035 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2023-03-31 01:11:10,035 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2023-03-31 01:11:10,035 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-03-31 01:11:10,035 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2023-03-31 01:11:10,035 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2023-03-31 01:11:10,035 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2023-03-31 01:11:10,036 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-03-31 01:11:10,036 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-03-31 01:11:10,036 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-03-31 01:11:10,171 INFO L236 CfgBuilder]: Building ICFG [2023-03-31 01:11:10,173 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-03-31 01:11:10,596 INFO L277 CfgBuilder]: Performing block encoding [2023-03-31 01:11:10,604 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-03-31 01:11:10,604 INFO L302 CfgBuilder]: Removed 5 assume(true) statements. [2023-03-31 01:11:10,606 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.03 01:11:10 BoogieIcfgContainer [2023-03-31 01:11:10,606 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-03-31 01:11:10,607 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-03-31 01:11:10,607 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-03-31 01:11:10,610 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-03-31 01:11:10,610 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.03 01:11:09" (1/3) ... [2023-03-31 01:11:10,610 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@359da5f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.03 01:11:10, skipping insertion in model container [2023-03-31 01:11:10,611 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:11:09" (2/3) ... [2023-03-31 01:11:10,611 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@359da5f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.03 01:11:10, skipping insertion in model container [2023-03-31 01:11:10,611 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.03 01:11:10" (3/3) ... [2023-03-31 01:11:10,612 INFO L112 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product50.cil.c [2023-03-31 01:11:10,625 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-03-31 01:11:10,625 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-03-31 01:11:10,667 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-03-31 01:11:10,672 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;@425ae305, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-03-31 01:11:10,673 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-03-31 01:11:10,676 INFO L276 IsEmpty]: Start isEmpty. Operand has 183 states, 102 states have (on average 1.2941176470588236) internal successors, (132), 115 states have internal predecessors, (132), 47 states have call successors, (47), 30 states have call predecessors, (47), 30 states have return successors, (47), 43 states have call predecessors, (47), 47 states have call successors, (47) [2023-03-31 01:11:10,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-03-31 01:11:10,684 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:11:10,685 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 01:11:10,685 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:11:10,689 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:11:10,690 INFO L85 PathProgramCache]: Analyzing trace with hash -900210312, now seen corresponding path program 1 times [2023-03-31 01:11:10,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:11:10,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755004413] [2023-03-31 01:11:10,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:11:10,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:11:10,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:10,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:11:10,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:10,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-03-31 01:11:10,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:10,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-03-31 01:11:10,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:10,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-03-31 01:11:11,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:11,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-03-31 01:11:11,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:11,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-03-31 01:11:11,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:11,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-03-31 01:11:11,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:11,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-03-31 01:11:11,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:11,036 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 01:11:11,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:11:11,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755004413] [2023-03-31 01:11:11,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [755004413] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:11:11,038 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:11:11,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-03-31 01:11:11,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460923065] [2023-03-31 01:11:11,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:11:11,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-03-31 01:11:11,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:11:11,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-03-31 01:11:11,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-03-31 01:11:11,062 INFO L87 Difference]: Start difference. First operand has 183 states, 102 states have (on average 1.2941176470588236) internal successors, (132), 115 states have internal predecessors, (132), 47 states have call successors, (47), 30 states have call predecessors, (47), 30 states have return successors, (47), 43 states have call predecessors, (47), 47 states have call successors, (47) Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 2 states have internal predecessors, (28), 2 states have call successors, (15), 4 states have call predecessors, (15), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-03-31 01:11:11,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:11:11,386 INFO L93 Difference]: Finished difference Result 306 states and 397 transitions. [2023-03-31 01:11:11,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-03-31 01:11:11,389 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 2 states have internal predecessors, (28), 2 states have call successors, (15), 4 states have call predecessors, (15), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 51 [2023-03-31 01:11:11,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:11:11,397 INFO L225 Difference]: With dead ends: 306 [2023-03-31 01:11:11,397 INFO L226 Difference]: Without dead ends: 170 [2023-03-31 01:11:11,399 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-03-31 01:11:11,402 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 183 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 199 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 199 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 307 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-03-31 01:11:11,402 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [199 Valid, 63 Invalid, 307 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 199 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-03-31 01:11:11,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2023-03-31 01:11:11,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 137. [2023-03-31 01:11:11,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 81 states have (on average 1.2469135802469136) internal successors, (101), 91 states have internal predecessors, (101), 32 states have call successors, (32), 28 states have call predecessors, (32), 23 states have return successors, (27), 23 states have call predecessors, (27), 27 states have call successors, (27) [2023-03-31 01:11:11,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 160 transitions. [2023-03-31 01:11:11,451 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 160 transitions. Word has length 51 [2023-03-31 01:11:11,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:11:11,452 INFO L495 AbstractCegarLoop]: Abstraction has 137 states and 160 transitions. [2023-03-31 01:11:11,452 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 2 states have internal predecessors, (28), 2 states have call successors, (15), 4 states have call predecessors, (15), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-03-31 01:11:11,453 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 160 transitions. [2023-03-31 01:11:11,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-03-31 01:11:11,459 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:11:11,460 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 01:11:11,460 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-03-31 01:11:11,460 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:11:11,461 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:11:11,461 INFO L85 PathProgramCache]: Analyzing trace with hash -1814275983, now seen corresponding path program 1 times [2023-03-31 01:11:11,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:11:11,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992272812] [2023-03-31 01:11:11,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:11:11,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:11:11,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:11,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:11:11,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:11,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-03-31 01:11:11,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:11,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-03-31 01:11:11,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:11,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-03-31 01:11:11,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:11,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-03-31 01:11:11,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:11,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-03-31 01:11:11,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:11,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-03-31 01:11:11,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:11,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-03-31 01:11:11,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:11,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 01:11:11,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:11:11,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992272812] [2023-03-31 01:11:11,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1992272812] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:11:11,588 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:11:11,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-03-31 01:11:11,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287309500] [2023-03-31 01:11:11,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:11:11,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-03-31 01:11:11,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:11:11,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-03-31 01:11:11,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-03-31 01:11:11,590 INFO L87 Difference]: Start difference. First operand 137 states and 160 transitions. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (15), 4 states have call predecessors, (15), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-03-31 01:11:11,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:11:11,979 INFO L93 Difference]: Finished difference Result 247 states and 304 transitions. [2023-03-31 01:11:11,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-03-31 01:11:11,980 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (15), 4 states have call predecessors, (15), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 52 [2023-03-31 01:11:11,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:11:11,985 INFO L225 Difference]: With dead ends: 247 [2023-03-31 01:11:11,985 INFO L226 Difference]: Without dead ends: 160 [2023-03-31 01:11:11,990 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-03-31 01:11:11,992 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 133 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 329 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 385 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 329 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-03-31 01:11:11,992 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [151 Valid, 40 Invalid, 385 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 329 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-03-31 01:11:11,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2023-03-31 01:11:12,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 128. [2023-03-31 01:11:12,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 75 states have (on average 1.2533333333333334) internal successors, (94), 85 states have internal predecessors, (94), 29 states have call successors, (29), 27 states have call predecessors, (29), 23 states have return successors, (25), 21 states have call predecessors, (25), 25 states have call successors, (25) [2023-03-31 01:11:12,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 148 transitions. [2023-03-31 01:11:12,032 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 148 transitions. Word has length 52 [2023-03-31 01:11:12,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:11:12,033 INFO L495 AbstractCegarLoop]: Abstraction has 128 states and 148 transitions. [2023-03-31 01:11:12,034 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (15), 4 states have call predecessors, (15), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-03-31 01:11:12,034 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 148 transitions. [2023-03-31 01:11:12,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-03-31 01:11:12,036 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:11:12,036 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] [2023-03-31 01:11:12,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-03-31 01:11:12,037 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:11:12,037 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:11:12,037 INFO L85 PathProgramCache]: Analyzing trace with hash 1403626502, now seen corresponding path program 1 times [2023-03-31 01:11:12,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:11:12,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916527532] [2023-03-31 01:11:12,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:11:12,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:11:12,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:12,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:11:12,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:12,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-03-31 01:11:12,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:12,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-03-31 01:11:12,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:12,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-03-31 01:11:12,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:12,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-03-31 01:11:12,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:12,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-03-31 01:11:12,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:12,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-03-31 01:11:12,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:12,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-03-31 01:11:12,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:12,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 01:11:12,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:11:12,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916527532] [2023-03-31 01:11:12,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [916527532] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:11:12,319 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:11:12,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-03-31 01:11:12,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255525718] [2023-03-31 01:11:12,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:11:12,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-03-31 01:11:12,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:11:12,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-03-31 01:11:12,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-03-31 01:11:12,321 INFO L87 Difference]: Start difference. First operand 128 states and 148 transitions. Second operand has 9 states, 9 states have (on average 3.888888888888889) internal successors, (35), 6 states have internal predecessors, (35), 4 states have call successors, (14), 6 states have call predecessors, (14), 3 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-03-31 01:11:12,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:11:12,833 INFO L93 Difference]: Finished difference Result 260 states and 323 transitions. [2023-03-31 01:11:12,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-03-31 01:11:12,833 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.888888888888889) internal successors, (35), 6 states have internal predecessors, (35), 4 states have call successors, (14), 6 states have call predecessors, (14), 3 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 57 [2023-03-31 01:11:12,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:11:12,834 INFO L225 Difference]: With dead ends: 260 [2023-03-31 01:11:12,835 INFO L226 Difference]: Without dead ends: 160 [2023-03-31 01:11:12,835 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2023-03-31 01:11:12,836 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 293 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 614 mSolverCounterSat, 180 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 295 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 794 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 180 IncrementalHoareTripleChecker+Valid, 614 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-03-31 01:11:12,836 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [295 Valid, 48 Invalid, 794 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [180 Valid, 614 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-03-31 01:11:12,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2023-03-31 01:11:12,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 128. [2023-03-31 01:11:12,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 75 states have (on average 1.24) internal successors, (93), 84 states have internal predecessors, (93), 29 states have call successors, (29), 27 states have call predecessors, (29), 23 states have return successors, (25), 21 states have call predecessors, (25), 25 states have call successors, (25) [2023-03-31 01:11:12,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 147 transitions. [2023-03-31 01:11:12,852 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 147 transitions. Word has length 57 [2023-03-31 01:11:12,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:11:12,853 INFO L495 AbstractCegarLoop]: Abstraction has 128 states and 147 transitions. [2023-03-31 01:11:12,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.888888888888889) internal successors, (35), 6 states have internal predecessors, (35), 4 states have call successors, (14), 6 states have call predecessors, (14), 3 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-03-31 01:11:12,853 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 147 transitions. [2023-03-31 01:11:12,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-03-31 01:11:12,854 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:11:12,854 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] [2023-03-31 01:11:12,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-03-31 01:11:12,854 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:11:12,854 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:11:12,854 INFO L85 PathProgramCache]: Analyzing trace with hash -889984019, now seen corresponding path program 1 times [2023-03-31 01:11:12,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:11:12,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794410364] [2023-03-31 01:11:12,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:11:12,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:11:12,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:12,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:11:12,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:12,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-03-31 01:11:12,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:12,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-03-31 01:11:12,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:12,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-03-31 01:11:12,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:12,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-03-31 01:11:12,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:12,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-03-31 01:11:12,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:12,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-03-31 01:11:12,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:12,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-03-31 01:11:12,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:12,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-03-31 01:11:13,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:13,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-03-31 01:11:13,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:13,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-03-31 01:11:13,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:13,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 01:11:13,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:11:13,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1794410364] [2023-03-31 01:11:13,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1794410364] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:11:13,004 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:11:13,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-03-31 01:11:13,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116312382] [2023-03-31 01:11:13,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:11:13,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-03-31 01:11:13,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:11:13,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-03-31 01:11:13,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-03-31 01:11:13,006 INFO L87 Difference]: Start difference. First operand 128 states and 147 transitions. Second operand has 7 states, 7 states have (on average 6.0) internal successors, (42), 5 states have internal predecessors, (42), 4 states have call successors, (17), 6 states have call predecessors, (17), 4 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) [2023-03-31 01:11:13,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:11:13,569 INFO L93 Difference]: Finished difference Result 359 states and 451 transitions. [2023-03-31 01:11:13,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-03-31 01:11:13,570 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.0) internal successors, (42), 5 states have internal predecessors, (42), 4 states have call successors, (17), 6 states have call predecessors, (17), 4 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) Word has length 70 [2023-03-31 01:11:13,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:11:13,572 INFO L225 Difference]: With dead ends: 359 [2023-03-31 01:11:13,572 INFO L226 Difference]: Without dead ends: 259 [2023-03-31 01:11:13,573 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2023-03-31 01:11:13,580 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 285 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 523 mSolverCounterSat, 163 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 290 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 686 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 163 IncrementalHoareTripleChecker+Valid, 523 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-03-31 01:11:13,581 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [290 Valid, 93 Invalid, 686 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [163 Valid, 523 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-03-31 01:11:13,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2023-03-31 01:11:13,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 210. [2023-03-31 01:11:13,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 127 states have (on average 1.220472440944882) internal successors, (155), 136 states have internal predecessors, (155), 41 states have call successors, (41), 40 states have call predecessors, (41), 41 states have return successors, (44), 40 states have call predecessors, (44), 37 states have call successors, (44) [2023-03-31 01:11:13,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 240 transitions. [2023-03-31 01:11:13,609 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 240 transitions. Word has length 70 [2023-03-31 01:11:13,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:11:13,609 INFO L495 AbstractCegarLoop]: Abstraction has 210 states and 240 transitions. [2023-03-31 01:11:13,609 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.0) internal successors, (42), 5 states have internal predecessors, (42), 4 states have call successors, (17), 6 states have call predecessors, (17), 4 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) [2023-03-31 01:11:13,609 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 240 transitions. [2023-03-31 01:11:13,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2023-03-31 01:11:13,610 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:11:13,610 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 01:11:13,610 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-03-31 01:11:13,611 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:11:13,611 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:11:13,611 INFO L85 PathProgramCache]: Analyzing trace with hash 560012301, now seen corresponding path program 1 times [2023-03-31 01:11:13,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:11:13,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934848023] [2023-03-31 01:11:13,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:11:13,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:11:13,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:13,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:11:13,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:13,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-03-31 01:11:13,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:13,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-03-31 01:11:13,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:13,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-03-31 01:11:13,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:13,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-03-31 01:11:13,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:13,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-03-31 01:11:13,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:13,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-03-31 01:11:13,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:13,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-03-31 01:11:13,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:13,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-03-31 01:11:13,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:13,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-03-31 01:11:13,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:13,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-03-31 01:11:13,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:13,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-03-31 01:11:13,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:13,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-03-31 01:11:13,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:13,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 01:11:13,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:11:13,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934848023] [2023-03-31 01:11:13,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [934848023] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:11:13,744 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:11:13,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-03-31 01:11:13,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524624823] [2023-03-31 01:11:13,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:11:13,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-03-31 01:11:13,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:11:13,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-03-31 01:11:13,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-03-31 01:11:13,746 INFO L87 Difference]: Start difference. First operand 210 states and 240 transitions. Second operand has 9 states, 9 states have (on average 5.777777777777778) internal successors, (52), 5 states have internal predecessors, (52), 3 states have call successors, (19), 6 states have call predecessors, (19), 3 states have return successors, (13), 4 states have call predecessors, (13), 3 states have call successors, (13) [2023-03-31 01:11:14,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:11:14,556 INFO L93 Difference]: Finished difference Result 626 states and 786 transitions. [2023-03-31 01:11:14,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-03-31 01:11:14,556 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.777777777777778) internal successors, (52), 5 states have internal predecessors, (52), 3 states have call successors, (19), 6 states have call predecessors, (19), 3 states have return successors, (13), 4 states have call predecessors, (13), 3 states have call successors, (13) Word has length 84 [2023-03-31 01:11:14,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:11:14,559 INFO L225 Difference]: With dead ends: 626 [2023-03-31 01:11:14,559 INFO L226 Difference]: Without dead ends: 444 [2023-03-31 01:11:14,559 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=105, Invalid=275, Unknown=0, NotChecked=0, Total=380 [2023-03-31 01:11:14,560 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 419 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 768 mSolverCounterSat, 262 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 434 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 1030 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 262 IncrementalHoareTripleChecker+Valid, 768 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-03-31 01:11:14,560 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [434 Valid, 75 Invalid, 1030 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [262 Valid, 768 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-03-31 01:11:14,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 444 states. [2023-03-31 01:11:14,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 444 to 368. [2023-03-31 01:11:14,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 368 states, 225 states have (on average 1.2) internal successors, (270), 242 states have internal predecessors, (270), 69 states have call successors, (69), 67 states have call predecessors, (69), 73 states have return successors, (81), 71 states have call predecessors, (81), 65 states have call successors, (81) [2023-03-31 01:11:14,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 368 states to 368 states and 420 transitions. [2023-03-31 01:11:14,591 INFO L78 Accepts]: Start accepts. Automaton has 368 states and 420 transitions. Word has length 84 [2023-03-31 01:11:14,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:11:14,592 INFO L495 AbstractCegarLoop]: Abstraction has 368 states and 420 transitions. [2023-03-31 01:11:14,592 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.777777777777778) internal successors, (52), 5 states have internal predecessors, (52), 3 states have call successors, (19), 6 states have call predecessors, (19), 3 states have return successors, (13), 4 states have call predecessors, (13), 3 states have call successors, (13) [2023-03-31 01:11:14,592 INFO L276 IsEmpty]: Start isEmpty. Operand 368 states and 420 transitions. [2023-03-31 01:11:14,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-03-31 01:11:14,593 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:11:14,593 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 01:11:14,593 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-03-31 01:11:14,593 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:11:14,593 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:11:14,593 INFO L85 PathProgramCache]: Analyzing trace with hash 162215145, now seen corresponding path program 1 times [2023-03-31 01:11:14,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:11:14,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156234025] [2023-03-31 01:11:14,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:11:14,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:11:14,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:14,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:11:14,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:14,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-03-31 01:11:14,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:14,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-03-31 01:11:14,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:14,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-03-31 01:11:14,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:14,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-03-31 01:11:14,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:14,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-03-31 01:11:14,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:14,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-03-31 01:11:14,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:14,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-03-31 01:11:14,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:14,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-03-31 01:11:14,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:14,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-03-31 01:11:14,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:14,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-03-31 01:11:14,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:14,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-03-31 01:11:14,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:14,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-03-31 01:11:14,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:14,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-03-31 01:11:14,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:14,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 01:11:14,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:11:14,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156234025] [2023-03-31 01:11:14,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [156234025] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:11:14,752 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:11:14,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-03-31 01:11:14,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633849535] [2023-03-31 01:11:14,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:11:14,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-03-31 01:11:14,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:11:14,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-03-31 01:11:14,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2023-03-31 01:11:14,753 INFO L87 Difference]: Start difference. First operand 368 states and 420 transitions. Second operand has 10 states, 10 states have (on average 5.4) internal successors, (54), 5 states have internal predecessors, (54), 3 states have call successors, (20), 7 states have call predecessors, (20), 3 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) [2023-03-31 01:11:15,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:11:15,534 INFO L93 Difference]: Finished difference Result 822 states and 1015 transitions. [2023-03-31 01:11:15,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-03-31 01:11:15,535 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.4) internal successors, (54), 5 states have internal predecessors, (54), 3 states have call successors, (20), 7 states have call predecessors, (20), 3 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) Word has length 88 [2023-03-31 01:11:15,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:11:15,538 INFO L225 Difference]: With dead ends: 822 [2023-03-31 01:11:15,538 INFO L226 Difference]: Without dead ends: 482 [2023-03-31 01:11:15,539 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=194, Invalid=508, Unknown=0, NotChecked=0, Total=702 [2023-03-31 01:11:15,540 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 570 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 770 mSolverCounterSat, 359 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 581 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 1129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 359 IncrementalHoareTripleChecker+Valid, 770 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-03-31 01:11:15,540 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [581 Valid, 95 Invalid, 1129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [359 Valid, 770 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-03-31 01:11:15,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 482 states. [2023-03-31 01:11:15,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 482 to 367. [2023-03-31 01:11:15,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 367 states, 224 states have (on average 1.1919642857142858) internal successors, (267), 241 states have internal predecessors, (267), 69 states have call successors, (69), 67 states have call predecessors, (69), 73 states have return successors, (81), 71 states have call predecessors, (81), 65 states have call successors, (81) [2023-03-31 01:11:15,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 417 transitions. [2023-03-31 01:11:15,573 INFO L78 Accepts]: Start accepts. Automaton has 367 states and 417 transitions. Word has length 88 [2023-03-31 01:11:15,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:11:15,574 INFO L495 AbstractCegarLoop]: Abstraction has 367 states and 417 transitions. [2023-03-31 01:11:15,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.4) internal successors, (54), 5 states have internal predecessors, (54), 3 states have call successors, (20), 7 states have call predecessors, (20), 3 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) [2023-03-31 01:11:15,574 INFO L276 IsEmpty]: Start isEmpty. Operand 367 states and 417 transitions. [2023-03-31 01:11:15,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-03-31 01:11:15,575 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:11:15,575 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 01:11:15,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-03-31 01:11:15,575 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:11:15,575 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:11:15,575 INFO L85 PathProgramCache]: Analyzing trace with hash 1501424516, now seen corresponding path program 1 times [2023-03-31 01:11:15,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:11:15,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886586206] [2023-03-31 01:11:15,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:11:15,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:11:15,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:15,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:11:15,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:15,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-03-31 01:11:15,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:15,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-03-31 01:11:15,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:15,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-03-31 01:11:15,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:15,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-03-31 01:11:15,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:15,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-03-31 01:11:15,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:15,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-03-31 01:11:15,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:15,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-03-31 01:11:15,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:15,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-03-31 01:11:15,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:15,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-03-31 01:11:15,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:15,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-03-31 01:11:15,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:15,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-03-31 01:11:15,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:15,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-03-31 01:11:15,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:15,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-03-31 01:11:15,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:15,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 01:11:15,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:11:15,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1886586206] [2023-03-31 01:11:15,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1886586206] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:11:15,703 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:11:15,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-03-31 01:11:15,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811713855] [2023-03-31 01:11:15,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:11:15,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-03-31 01:11:15,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:11:15,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-03-31 01:11:15,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2023-03-31 01:11:15,704 INFO L87 Difference]: Start difference. First operand 367 states and 417 transitions. Second operand has 10 states, 10 states have (on average 5.5) internal successors, (55), 5 states have internal predecessors, (55), 2 states have call successors, (20), 6 states have call predecessors, (20), 3 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) [2023-03-31 01:11:16,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:11:16,351 INFO L93 Difference]: Finished difference Result 825 states and 1024 transitions. [2023-03-31 01:11:16,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-03-31 01:11:16,351 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.5) internal successors, (55), 5 states have internal predecessors, (55), 2 states have call successors, (20), 6 states have call predecessors, (20), 3 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) Word has length 89 [2023-03-31 01:11:16,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:11:16,354 INFO L225 Difference]: With dead ends: 825 [2023-03-31 01:11:16,354 INFO L226 Difference]: Without dead ends: 486 [2023-03-31 01:11:16,355 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2023-03-31 01:11:16,355 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 289 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 812 mSolverCounterSat, 159 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 308 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 971 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 159 IncrementalHoareTripleChecker+Valid, 812 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-03-31 01:11:16,356 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [308 Valid, 75 Invalid, 971 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [159 Valid, 812 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-03-31 01:11:16,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 486 states. [2023-03-31 01:11:16,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 486 to 377. [2023-03-31 01:11:16,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 377 states, 232 states have (on average 1.1853448275862069) internal successors, (275), 249 states have internal predecessors, (275), 69 states have call successors, (69), 67 states have call predecessors, (69), 75 states have return successors, (83), 73 states have call predecessors, (83), 65 states have call successors, (83) [2023-03-31 01:11:16,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 427 transitions. [2023-03-31 01:11:16,391 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 427 transitions. Word has length 89 [2023-03-31 01:11:16,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:11:16,392 INFO L495 AbstractCegarLoop]: Abstraction has 377 states and 427 transitions. [2023-03-31 01:11:16,392 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.5) internal successors, (55), 5 states have internal predecessors, (55), 2 states have call successors, (20), 6 states have call predecessors, (20), 3 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) [2023-03-31 01:11:16,392 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 427 transitions. [2023-03-31 01:11:16,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-03-31 01:11:16,393 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:11:16,393 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 01:11:16,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-03-31 01:11:16,393 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:11:16,393 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:11:16,393 INFO L85 PathProgramCache]: Analyzing trace with hash -2091942906, now seen corresponding path program 1 times [2023-03-31 01:11:16,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:11:16,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526284009] [2023-03-31 01:11:16,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:11:16,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:11:16,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:16,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:11:16,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:16,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-03-31 01:11:16,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:16,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-03-31 01:11:16,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:16,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-03-31 01:11:16,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:16,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-03-31 01:11:16,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:16,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-03-31 01:11:16,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:16,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-03-31 01:11:16,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:16,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-03-31 01:11:16,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:16,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-03-31 01:11:16,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:16,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-03-31 01:11:16,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:16,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-03-31 01:11:16,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:16,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-03-31 01:11:16,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:16,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-03-31 01:11:16,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:16,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-03-31 01:11:16,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:16,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 01:11:16,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:11:16,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526284009] [2023-03-31 01:11:16,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [526284009] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:11:16,539 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:11:16,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-03-31 01:11:16,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582101133] [2023-03-31 01:11:16,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:11:16,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-03-31 01:11:16,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:11:16,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-03-31 01:11:16,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2023-03-31 01:11:16,541 INFO L87 Difference]: Start difference. First operand 377 states and 427 transitions. Second operand has 12 states, 12 states have (on average 4.583333333333333) internal successors, (55), 6 states have internal predecessors, (55), 2 states have call successors, (20), 6 states have call predecessors, (20), 4 states have return successors, (14), 4 states have call predecessors, (14), 2 states have call successors, (14) [2023-03-31 01:11:17,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:11:17,285 INFO L93 Difference]: Finished difference Result 849 states and 1066 transitions. [2023-03-31 01:11:17,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-03-31 01:11:17,285 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.583333333333333) internal successors, (55), 6 states have internal predecessors, (55), 2 states have call successors, (20), 6 states have call predecessors, (20), 4 states have return successors, (14), 4 states have call predecessors, (14), 2 states have call successors, (14) Word has length 89 [2023-03-31 01:11:17,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:11:17,288 INFO L225 Difference]: With dead ends: 849 [2023-03-31 01:11:17,288 INFO L226 Difference]: Without dead ends: 500 [2023-03-31 01:11:17,292 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2023-03-31 01:11:17,293 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 442 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 1078 mSolverCounterSat, 283 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 462 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 1361 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 283 IncrementalHoareTripleChecker+Valid, 1078 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-03-31 01:11:17,293 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [462 Valid, 87 Invalid, 1361 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [283 Valid, 1078 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-03-31 01:11:17,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 500 states. [2023-03-31 01:11:17,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 500 to 385. [2023-03-31 01:11:17,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 385 states, 238 states have (on average 1.180672268907563) internal successors, (281), 255 states have internal predecessors, (281), 69 states have call successors, (69), 67 states have call predecessors, (69), 77 states have return successors, (85), 75 states have call predecessors, (85), 65 states have call successors, (85) [2023-03-31 01:11:17,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 435 transitions. [2023-03-31 01:11:17,334 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 435 transitions. Word has length 89 [2023-03-31 01:11:17,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:11:17,334 INFO L495 AbstractCegarLoop]: Abstraction has 385 states and 435 transitions. [2023-03-31 01:11:17,334 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.583333333333333) internal successors, (55), 6 states have internal predecessors, (55), 2 states have call successors, (20), 6 states have call predecessors, (20), 4 states have return successors, (14), 4 states have call predecessors, (14), 2 states have call successors, (14) [2023-03-31 01:11:17,334 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 435 transitions. [2023-03-31 01:11:17,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-03-31 01:11:17,335 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:11:17,336 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 01:11:17,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-03-31 01:11:17,336 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:11:17,336 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:11:17,336 INFO L85 PathProgramCache]: Analyzing trace with hash -366462009, now seen corresponding path program 1 times [2023-03-31 01:11:17,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:11:17,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441440943] [2023-03-31 01:11:17,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:11:17,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:11:17,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:17,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:11:17,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:17,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-03-31 01:11:17,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:17,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-03-31 01:11:17,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:17,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-03-31 01:11:17,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:17,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-03-31 01:11:17,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:17,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-03-31 01:11:17,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:17,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-03-31 01:11:17,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:17,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-03-31 01:11:17,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:17,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-03-31 01:11:17,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:17,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-03-31 01:11:17,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:17,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-03-31 01:11:17,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:17,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-03-31 01:11:17,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:17,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-03-31 01:11:17,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:17,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-03-31 01:11:17,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:17,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 01:11:17,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:11:17,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441440943] [2023-03-31 01:11:17,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [441440943] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:11:17,475 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:11:17,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-03-31 01:11:17,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920045526] [2023-03-31 01:11:17,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:11:17,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-03-31 01:11:17,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:11:17,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-03-31 01:11:17,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-03-31 01:11:17,477 INFO L87 Difference]: Start difference. First operand 385 states and 435 transitions. Second operand has 8 states, 8 states have (on average 6.875) internal successors, (55), 4 states have internal predecessors, (55), 4 states have call successors, (20), 7 states have call predecessors, (20), 3 states have return successors, (14), 3 states have call predecessors, (14), 4 states have call successors, (14) [2023-03-31 01:11:18,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:11:18,193 INFO L93 Difference]: Finished difference Result 1197 states and 1553 transitions. [2023-03-31 01:11:18,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-03-31 01:11:18,193 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.875) internal successors, (55), 4 states have internal predecessors, (55), 4 states have call successors, (20), 7 states have call predecessors, (20), 3 states have return successors, (14), 3 states have call predecessors, (14), 4 states have call successors, (14) Word has length 89 [2023-03-31 01:11:18,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:11:18,201 INFO L225 Difference]: With dead ends: 1197 [2023-03-31 01:11:18,202 INFO L226 Difference]: Without dead ends: 840 [2023-03-31 01:11:18,204 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 36 SyntacticMatches, 3 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=148, Invalid=404, Unknown=0, NotChecked=0, Total=552 [2023-03-31 01:11:18,205 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 808 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 549 mSolverCounterSat, 509 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 822 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 1058 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 509 IncrementalHoareTripleChecker+Valid, 549 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-03-31 01:11:18,205 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [822 Valid, 110 Invalid, 1058 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [509 Valid, 549 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-03-31 01:11:18,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 840 states. [2023-03-31 01:11:18,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 840 to 695. [2023-03-31 01:11:18,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 695 states, 440 states have (on average 1.1681818181818182) internal successors, (514), 475 states have internal predecessors, (514), 125 states have call successors, (125), 123 states have call predecessors, (125), 129 states have return successors, (174), 125 states have call predecessors, (174), 121 states have call successors, (174) [2023-03-31 01:11:18,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 695 states to 695 states and 813 transitions. [2023-03-31 01:11:18,260 INFO L78 Accepts]: Start accepts. Automaton has 695 states and 813 transitions. Word has length 89 [2023-03-31 01:11:18,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:11:18,261 INFO L495 AbstractCegarLoop]: Abstraction has 695 states and 813 transitions. [2023-03-31 01:11:18,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.875) internal successors, (55), 4 states have internal predecessors, (55), 4 states have call successors, (20), 7 states have call predecessors, (20), 3 states have return successors, (14), 3 states have call predecessors, (14), 4 states have call successors, (14) [2023-03-31 01:11:18,262 INFO L276 IsEmpty]: Start isEmpty. Operand 695 states and 813 transitions. [2023-03-31 01:11:18,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-03-31 01:11:18,264 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:11:18,264 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 01:11:18,264 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-03-31 01:11:18,264 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:11:18,264 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:11:18,264 INFO L85 PathProgramCache]: Analyzing trace with hash -2065908499, now seen corresponding path program 1 times [2023-03-31 01:11:18,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:11:18,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480255743] [2023-03-31 01:11:18,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:11:18,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:11:18,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:18,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:11:18,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:18,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-03-31 01:11:18,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:18,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-03-31 01:11:18,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:18,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-03-31 01:11:18,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:18,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-03-31 01:11:18,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:18,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-03-31 01:11:18,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:18,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-03-31 01:11:18,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:18,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-03-31 01:11:18,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:18,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-03-31 01:11:18,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:18,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-03-31 01:11:18,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:18,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-03-31 01:11:18,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:18,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-03-31 01:11:18,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:18,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-03-31 01:11:18,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:18,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-03-31 01:11:18,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:18,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-03-31 01:11:18,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:18,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 01:11:18,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:11:18,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480255743] [2023-03-31 01:11:18,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [480255743] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:11:18,384 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:11:18,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-03-31 01:11:18,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942549819] [2023-03-31 01:11:18,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:11:18,385 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-03-31 01:11:18,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:11:18,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-03-31 01:11:18,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-03-31 01:11:18,385 INFO L87 Difference]: Start difference. First operand 695 states and 813 transitions. Second operand has 8 states, 8 states have (on average 7.125) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (21), 8 states have call predecessors, (21), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-03-31 01:11:19,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:11:19,096 INFO L93 Difference]: Finished difference Result 1377 states and 1783 transitions. [2023-03-31 01:11:19,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-03-31 01:11:19,096 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (21), 8 states have call predecessors, (21), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 93 [2023-03-31 01:11:19,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:11:19,101 INFO L225 Difference]: With dead ends: 1377 [2023-03-31 01:11:19,101 INFO L226 Difference]: Without dead ends: 1374 [2023-03-31 01:11:19,102 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=212, Invalid=544, Unknown=0, NotChecked=0, Total=756 [2023-03-31 01:11:19,103 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 752 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 371 mSolverCounterSat, 476 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 761 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 847 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 476 IncrementalHoareTripleChecker+Valid, 371 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-03-31 01:11:19,103 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [761 Valid, 95 Invalid, 847 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [476 Valid, 371 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-03-31 01:11:19,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1374 states. [2023-03-31 01:11:19,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1374 to 1147. [2023-03-31 01:11:19,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1147 states, 713 states have (on average 1.155680224403927) internal successors, (824), 768 states have internal predecessors, (824), 207 states have call successors, (207), 193 states have call predecessors, (207), 226 states have return successors, (325), 222 states have call predecessors, (325), 203 states have call successors, (325) [2023-03-31 01:11:19,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1147 states to 1147 states and 1356 transitions. [2023-03-31 01:11:19,221 INFO L78 Accepts]: Start accepts. Automaton has 1147 states and 1356 transitions. Word has length 93 [2023-03-31 01:11:19,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:11:19,221 INFO L495 AbstractCegarLoop]: Abstraction has 1147 states and 1356 transitions. [2023-03-31 01:11:19,222 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (21), 8 states have call predecessors, (21), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-03-31 01:11:19,222 INFO L276 IsEmpty]: Start isEmpty. Operand 1147 states and 1356 transitions. [2023-03-31 01:11:19,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2023-03-31 01:11:19,227 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:11:19,227 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 01:11:19,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-03-31 01:11:19,227 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:11:19,228 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:11:19,228 INFO L85 PathProgramCache]: Analyzing trace with hash -362425993, now seen corresponding path program 1 times [2023-03-31 01:11:19,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:11:19,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147262479] [2023-03-31 01:11:19,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:11:19,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:11:19,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:19,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:11:19,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:19,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-03-31 01:11:19,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:19,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-03-31 01:11:19,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:19,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-03-31 01:11:19,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:19,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-03-31 01:11:19,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:19,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-03-31 01:11:19,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:19,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-03-31 01:11:19,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:19,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-03-31 01:11:19,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:19,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-03-31 01:11:19,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:19,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-03-31 01:11:19,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:19,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-03-31 01:11:19,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:19,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-03-31 01:11:19,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:19,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-03-31 01:11:19,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:19,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-03-31 01:11:19,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:19,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-03-31 01:11:19,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:19,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-03-31 01:11:19,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:19,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-03-31 01:11:19,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:19,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-03-31 01:11:19,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:19,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-03-31 01:11:19,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:19,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-03-31 01:11:19,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:19,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-03-31 01:11:19,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:19,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-03-31 01:11:19,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:19,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2023-03-31 01:11:19,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:19,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2023-03-31 01:11:19,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:19,429 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 21 proven. 7 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-03-31 01:11:19,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:11:19,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147262479] [2023-03-31 01:11:19,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1147262479] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-31 01:11:19,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1867926796] [2023-03-31 01:11:19,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:11:19,430 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 01:11:19,430 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 01:11:19,458 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-03-31 01:11:19,493 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-03-31 01:11:19,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:19,621 INFO L262 TraceCheckSpWp]: Trace formula consists of 549 conjuncts, 4 conjunts are in the unsatisfiable core [2023-03-31 01:11:19,629 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-31 01:11:19,714 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 01:11:19,714 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-03-31 01:11:19,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1867926796] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:11:19,714 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-03-31 01:11:19,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [13] total 13 [2023-03-31 01:11:19,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296285458] [2023-03-31 01:11:19,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:11:19,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-03-31 01:11:19,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:11:19,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-03-31 01:11:19,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-03-31 01:11:19,716 INFO L87 Difference]: Start difference. First operand 1147 states and 1356 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 3 states have call successors, (30), 3 states have call predecessors, (30), 3 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2023-03-31 01:11:19,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:11:19,873 INFO L93 Difference]: Finished difference Result 1935 states and 2323 transitions. [2023-03-31 01:11:19,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-03-31 01:11:19,873 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 3 states have call successors, (30), 3 states have call predecessors, (30), 3 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) Word has length 152 [2023-03-31 01:11:19,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:11:19,877 INFO L225 Difference]: With dead ends: 1935 [2023-03-31 01:11:19,877 INFO L226 Difference]: Without dead ends: 948 [2023-03-31 01:11:19,878 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 198 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-03-31 01:11:19,879 INFO L413 NwaCegarLoop]: 203 mSDtfsCounter, 56 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 310 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-03-31 01:11:19,879 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 310 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-03-31 01:11:19,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 948 states. [2023-03-31 01:11:19,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 948 to 948. [2023-03-31 01:11:19,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 948 states, 588 states have (on average 1.1581632653061225) internal successors, (681), 637 states have internal predecessors, (681), 175 states have call successors, (175), 161 states have call predecessors, (175), 184 states have return successors, (250), 186 states have call predecessors, (250), 171 states have call successors, (250) [2023-03-31 01:11:19,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 948 states to 948 states and 1106 transitions. [2023-03-31 01:11:19,953 INFO L78 Accepts]: Start accepts. Automaton has 948 states and 1106 transitions. Word has length 152 [2023-03-31 01:11:19,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:11:19,954 INFO L495 AbstractCegarLoop]: Abstraction has 948 states and 1106 transitions. [2023-03-31 01:11:19,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 3 states have call successors, (30), 3 states have call predecessors, (30), 3 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2023-03-31 01:11:19,954 INFO L276 IsEmpty]: Start isEmpty. Operand 948 states and 1106 transitions. [2023-03-31 01:11:19,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2023-03-31 01:11:19,956 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:11:19,956 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 01:11:19,965 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-03-31 01:11:20,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-03-31 01:11:20,162 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:11:20,162 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:11:20,163 INFO L85 PathProgramCache]: Analyzing trace with hash -964539321, now seen corresponding path program 1 times [2023-03-31 01:11:20,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:11:20,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623002127] [2023-03-31 01:11:20,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:11:20,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:11:20,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:20,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:11:20,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:20,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-03-31 01:11:20,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:20,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-03-31 01:11:20,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:20,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-03-31 01:11:20,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:20,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-03-31 01:11:20,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:20,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-03-31 01:11:20,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:20,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-03-31 01:11:20,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:20,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-03-31 01:11:20,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:20,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-03-31 01:11:20,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:20,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-03-31 01:11:20,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:20,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-03-31 01:11:20,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:20,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-03-31 01:11:20,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:20,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-03-31 01:11:20,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:20,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-03-31 01:11:20,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:20,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-03-31 01:11:20,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:20,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-03-31 01:11:20,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:20,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-03-31 01:11:20,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:20,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2023-03-31 01:11:20,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:20,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2023-03-31 01:11:20,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:20,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-03-31 01:11:20,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:20,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-03-31 01:11:20,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:20,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-03-31 01:11:20,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:20,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-03-31 01:11:20,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:20,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2023-03-31 01:11:20,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:20,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2023-03-31 01:11:20,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:20,485 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 21 proven. 5 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-03-31 01:11:20,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:11:20,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623002127] [2023-03-31 01:11:20,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [623002127] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-31 01:11:20,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1199716368] [2023-03-31 01:11:20,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:11:20,485 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 01:11:20,486 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 01:11:20,486 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-03-31 01:11:20,505 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-03-31 01:11:20,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:20,653 INFO L262 TraceCheckSpWp]: Trace formula consists of 550 conjuncts, 15 conjunts are in the unsatisfiable core [2023-03-31 01:11:20,665 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-31 01:11:20,793 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 01:11:20,793 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-03-31 01:11:20,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1199716368] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:11:20,794 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-03-31 01:11:20,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [15] total 19 [2023-03-31 01:11:20,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762481173] [2023-03-31 01:11:20,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:11:20,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-03-31 01:11:20,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:11:20,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-03-31 01:11:20,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=283, Unknown=0, NotChecked=0, Total=342 [2023-03-31 01:11:20,796 INFO L87 Difference]: Start difference. First operand 948 states and 1106 transitions. Second operand has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 7 states have internal predecessors, (98), 4 states have call successors, (31), 5 states have call predecessors, (31), 5 states have return successors, (25), 5 states have call predecessors, (25), 4 states have call successors, (25) [2023-03-31 01:11:21,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:11:21,573 INFO L93 Difference]: Finished difference Result 2574 states and 3363 transitions. [2023-03-31 01:11:21,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-03-31 01:11:21,574 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 7 states have internal predecessors, (98), 4 states have call successors, (31), 5 states have call predecessors, (31), 5 states have return successors, (25), 5 states have call predecessors, (25), 4 states have call successors, (25) Word has length 154 [2023-03-31 01:11:21,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:11:21,584 INFO L225 Difference]: With dead ends: 2574 [2023-03-31 01:11:21,584 INFO L226 Difference]: Without dead ends: 1786 [2023-03-31 01:11:21,587 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 199 SyntacticMatches, 5 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=111, Invalid=539, Unknown=0, NotChecked=0, Total=650 [2023-03-31 01:11:21,588 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 332 mSDsluCounter, 232 mSDsCounter, 0 mSdLazyCounter, 912 mSolverCounterSat, 172 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 351 SdHoareTripleChecker+Valid, 297 SdHoareTripleChecker+Invalid, 1084 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 172 IncrementalHoareTripleChecker+Valid, 912 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-03-31 01:11:21,588 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [351 Valid, 297 Invalid, 1084 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [172 Valid, 912 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-03-31 01:11:21,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1786 states. [2023-03-31 01:11:21,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1786 to 1410. [2023-03-31 01:11:21,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1410 states, 877 states have (on average 1.1550741163055873) internal successors, (1013), 948 states have internal predecessors, (1013), 257 states have call successors, (257), 241 states have call predecessors, (257), 275 states have return successors, (371), 268 states have call predecessors, (371), 253 states have call successors, (371) [2023-03-31 01:11:21,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1410 states to 1410 states and 1641 transitions. [2023-03-31 01:11:21,786 INFO L78 Accepts]: Start accepts. Automaton has 1410 states and 1641 transitions. Word has length 154 [2023-03-31 01:11:21,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:11:21,787 INFO L495 AbstractCegarLoop]: Abstraction has 1410 states and 1641 transitions. [2023-03-31 01:11:21,787 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 7 states have internal predecessors, (98), 4 states have call successors, (31), 5 states have call predecessors, (31), 5 states have return successors, (25), 5 states have call predecessors, (25), 4 states have call successors, (25) [2023-03-31 01:11:21,787 INFO L276 IsEmpty]: Start isEmpty. Operand 1410 states and 1641 transitions. [2023-03-31 01:11:21,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2023-03-31 01:11:21,789 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:11:21,789 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 01:11:21,809 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-03-31 01:11:21,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-03-31 01:11:21,994 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:11:21,995 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:11:21,995 INFO L85 PathProgramCache]: Analyzing trace with hash -1036925879, now seen corresponding path program 1 times [2023-03-31 01:11:21,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:11:21,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773136845] [2023-03-31 01:11:21,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:11:21,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:11:22,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:22,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:11:22,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:22,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-03-31 01:11:22,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:22,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-03-31 01:11:22,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:22,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-03-31 01:11:22,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:22,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-03-31 01:11:22,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:22,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-03-31 01:11:22,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:22,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-03-31 01:11:22,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:22,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-03-31 01:11:22,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:22,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-03-31 01:11:22,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:22,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-03-31 01:11:22,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:22,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-03-31 01:11:22,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:22,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-03-31 01:11:22,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:22,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-03-31 01:11:22,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:22,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-03-31 01:11:22,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:22,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-03-31 01:11:22,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:22,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-03-31 01:11:22,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:22,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-03-31 01:11:22,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:22,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2023-03-31 01:11:22,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:22,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2023-03-31 01:11:22,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:22,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-03-31 01:11:22,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:22,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-03-31 01:11:22,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:22,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-03-31 01:11:22,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:22,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-03-31 01:11:22,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:22,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2023-03-31 01:11:22,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:22,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2023-03-31 01:11:22,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:22,226 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-03-31 01:11:22,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:11:22,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773136845] [2023-03-31 01:11:22,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1773136845] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-31 01:11:22,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1862334660] [2023-03-31 01:11:22,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:11:22,227 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 01:11:22,227 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 01:11:22,228 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 01:11:22,265 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 01:11:22,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:11:22,373 INFO L262 TraceCheckSpWp]: Trace formula consists of 551 conjuncts, 6 conjunts are in the unsatisfiable core [2023-03-31 01:11:22,378 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-31 01:11:22,395 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-03-31 01:11:22,395 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-03-31 01:11:22,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1862334660] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:11:22,396 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-03-31 01:11:22,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [15] total 15 [2023-03-31 01:11:22,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027881148] [2023-03-31 01:11:22,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:11:22,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-03-31 01:11:22,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:11:22,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-03-31 01:11:22,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2023-03-31 01:11:22,399 INFO L87 Difference]: Start difference. First operand 1410 states and 1641 transitions. Second operand has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 5 states have internal predecessors, (89), 2 states have call successors, (29), 2 states have call predecessors, (29), 3 states have return successors, (25), 3 states have call predecessors, (25), 2 states have call successors, (25) [2023-03-31 01:11:22,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:11:22,515 INFO L93 Difference]: Finished difference Result 1959 states and 2277 transitions. [2023-03-31 01:11:22,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-03-31 01:11:22,515 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 5 states have internal predecessors, (89), 2 states have call successors, (29), 2 states have call predecessors, (29), 3 states have return successors, (25), 3 states have call predecessors, (25), 2 states have call successors, (25) Word has length 154 [2023-03-31 01:11:22,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:11:22,516 INFO L225 Difference]: With dead ends: 1959 [2023-03-31 01:11:22,516 INFO L226 Difference]: Without dead ends: 0 [2023-03-31 01:11:22,519 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2023-03-31 01:11:22,520 INFO L413 NwaCegarLoop]: 135 mSDtfsCounter, 4 mSDsluCounter, 531 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 666 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 01:11:22,520 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 666 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-03-31 01:11:22,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-03-31 01:11:22,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-03-31 01:11:22,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-03-31 01:11:22,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-03-31 01:11:22,521 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 154 [2023-03-31 01:11:22,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:11:22,522 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-03-31 01:11:22,522 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 5 states have internal predecessors, (89), 2 states have call successors, (29), 2 states have call predecessors, (29), 3 states have return successors, (25), 3 states have call predecessors, (25), 2 states have call successors, (25) [2023-03-31 01:11:22,522 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-03-31 01:11:22,522 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-03-31 01:11:22,524 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-03-31 01:11:22,533 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 01:11:22,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 01:11:22,733 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.