/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/taipan/svcomp-Reach-32bit-Taipan_Default.epf -tc ../../../trunk/examples/toolchains/AutomizerC.xml --sifa.abstract.domain OctagonDomain -i ../sv-benchmarks/c/product-lines/minepump_spec5_product38.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-01 06:02:16,791 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-01 06:02:16,793 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-01 06:02:16,819 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-01 06:02:16,819 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-01 06:02:16,820 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-01 06:02:16,821 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-01 06:02:16,823 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-01 06:02:16,824 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-01 06:02:16,825 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-01 06:02:16,826 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-01 06:02:16,826 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-01 06:02:16,827 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-01 06:02:16,828 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-01 06:02:16,829 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-01 06:02:16,830 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-01 06:02:16,830 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-01 06:02:16,831 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-01 06:02:16,836 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-01 06:02:16,842 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-01 06:02:16,847 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-01 06:02:16,851 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-01 06:02:16,852 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-01 06:02:16,852 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-01 06:02:16,855 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-04-01 06:02:16,855 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-04-01 06:02:16,856 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-04-01 06:02:16,856 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-04-01 06:02:16,857 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-04-01 06:02:16,857 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-04-01 06:02:16,858 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-01 06:02:16,858 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-01 06:02:16,859 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-01 06:02:16,859 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-01 06:02:16,860 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-01 06:02:16,866 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-01 06:02:16,867 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-01 06:02:16,868 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-01 06:02:16,868 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-01 06:02:16,871 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-01 06:02:16,871 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-01 06:02:16,872 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf [2023-04-01 06:02:16,909 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-01 06:02:16,909 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-01 06:02:16,910 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-01 06:02:16,910 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-01 06:02:16,911 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-01 06:02:16,911 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-01 06:02:16,911 INFO L138 SettingsManager]: * User list type=DISABLED [2023-04-01 06:02:16,911 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-04-01 06:02:16,911 INFO L138 SettingsManager]: * Explicit value domain=true [2023-04-01 06:02:16,912 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-04-01 06:02:16,912 INFO L138 SettingsManager]: * Octagon Domain=false [2023-04-01 06:02:16,913 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-04-01 06:02:16,913 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-04-01 06:02:16,913 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-04-01 06:02:16,913 INFO L138 SettingsManager]: * Interval Domain=false [2023-04-01 06:02:16,913 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-04-01 06:02:16,913 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-04-01 06:02:16,913 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-04-01 06:02:16,914 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-01 06:02:16,914 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-01 06:02:16,914 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-01 06:02:16,914 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-01 06:02:16,915 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-01 06:02:16,915 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-01 06:02:16,915 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-01 06:02:16,915 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-01 06:02:16,915 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-01 06:02:16,915 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-01 06:02:16,915 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-01 06:02:16,916 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-01 06:02:16,916 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-01 06:02:16,916 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-01 06:02:16,916 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 06:02:16,916 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-01 06:02:16,916 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-04-01 06:02:16,917 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-01 06:02:16,917 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-01 06:02:16,917 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-04-01 06:02:16,917 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-01 06:02:16,917 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-01 06:02:16,917 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-04-01 06:02:16,917 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> OctagonDomain [2023-04-01 06:02:17,164 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-01 06:02:17,191 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-01 06:02:17,193 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-01 06:02:17,194 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-01 06:02:17,195 INFO L275 PluginConnector]: CDTParser initialized [2023-04-01 06:02:17,196 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/minepump_spec5_product38.cil.c [2023-04-01 06:02:18,475 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-01 06:02:18,882 INFO L351 CDTParser]: Found 1 translation units. [2023-04-01 06:02:18,882 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec5_product38.cil.c [2023-04-01 06:02:18,911 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9c4cc8a98/19abc5a7adda4e2889e6077629195388/FLAGa5c477d58 [2023-04-01 06:02:18,937 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9c4cc8a98/19abc5a7adda4e2889e6077629195388 [2023-04-01 06:02:18,939 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-01 06:02:18,941 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-01 06:02:18,947 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-01 06:02:18,947 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-01 06:02:18,951 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-01 06:02:18,951 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 06:02:18" (1/1) ... [2023-04-01 06:02:18,952 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e43210f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:02:18, skipping insertion in model container [2023-04-01 06:02:18,952 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 06:02:18" (1/1) ... [2023-04-01 06:02:18,958 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-01 06:02:18,995 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-01 06:02:19,106 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_spec5_product38.cil.c[1605,1618] [2023-04-01 06:02:19,221 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 06:02:19,242 INFO L203 MainTranslator]: Completed pre-run [2023-04-01 06:02:19,265 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_spec5_product38.cil.c[1605,1618] [2023-04-01 06:02:19,339 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 06:02:19,355 INFO L208 MainTranslator]: Completed translation [2023-04-01 06:02:19,355 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:02:19 WrapperNode [2023-04-01 06:02:19,356 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-01 06:02:19,357 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-01 06:02:19,357 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-01 06:02:19,357 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-01 06:02:19,367 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:02:19" (1/1) ... [2023-04-01 06:02:19,367 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:02:19" (1/1) ... [2023-04-01 06:02:19,389 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:02:19" (1/1) ... [2023-04-01 06:02:19,389 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:02:19" (1/1) ... [2023-04-01 06:02:19,428 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:02:19" (1/1) ... [2023-04-01 06:02:19,433 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:02:19" (1/1) ... [2023-04-01 06:02:19,436 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:02:19" (1/1) ... [2023-04-01 06:02:19,438 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:02:19" (1/1) ... [2023-04-01 06:02:19,443 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-01 06:02:19,444 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-01 06:02:19,444 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-01 06:02:19,444 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-01 06:02:19,455 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:02:19" (1/1) ... [2023-04-01 06:02:19,462 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 06:02:19,475 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 06:02:19,485 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-04-01 06:02:19,492 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-04-01 06:02:19,526 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-01 06:02:19,526 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-01 06:02:19,526 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2023-04-01 06:02:19,526 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-01 06:02:19,527 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2023-04-01 06:02:19,527 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2023-04-01 06:02:19,527 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2023-04-01 06:02:19,527 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2023-04-01 06:02:19,527 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2023-04-01 06:02:19,527 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-01 06:02:19,527 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__1 [2023-04-01 06:02:19,527 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__2 [2023-04-01 06:02:19,527 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__3 [2023-04-01 06:02:19,527 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2023-04-01 06:02:19,528 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2023-04-01 06:02:19,528 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2023-04-01 06:02:19,528 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2023-04-01 06:02:19,528 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2023-04-01 06:02:19,528 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2023-04-01 06:02:19,528 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2023-04-01 06:02:19,528 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2023-04-01 06:02:19,528 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2023-04-01 06:02:19,528 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2023-04-01 06:02:19,528 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2023-04-01 06:02:19,528 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2023-04-01 06:02:19,529 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2023-04-01 06:02:19,529 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2023-04-01 06:02:19,529 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2023-04-01 06:02:19,529 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2023-04-01 06:02:19,529 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2023-04-01 06:02:19,529 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2023-04-01 06:02:19,529 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2023-04-01 06:02:19,529 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2023-04-01 06:02:19,529 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2023-04-01 06:02:19,529 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2023-04-01 06:02:19,530 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2023-04-01 06:02:19,530 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2023-04-01 06:02:19,530 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2023-04-01 06:02:19,530 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2023-04-01 06:02:19,530 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2023-04-01 06:02:19,530 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2023-04-01 06:02:19,530 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2023-04-01 06:02:19,530 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-01 06:02:19,531 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-01 06:02:19,531 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-01 06:02:19,532 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-01 06:02:19,532 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-04-01 06:02:19,532 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2023-04-01 06:02:19,533 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2023-04-01 06:02:19,533 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2023-04-01 06:02:19,533 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2023-04-01 06:02:19,533 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2023-04-01 06:02:19,533 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2023-04-01 06:02:19,533 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2023-04-01 06:02:19,534 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2023-04-01 06:02:19,534 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2023-04-01 06:02:19,534 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__1 [2023-04-01 06:02:19,534 INFO L130 BoogieDeclarations]: Found specification of procedure test [2023-04-01 06:02:19,534 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2023-04-01 06:02:19,535 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2023-04-01 06:02:19,536 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2023-04-01 06:02:19,536 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2023-04-01 06:02:19,536 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-01 06:02:19,536 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2023-04-01 06:02:19,536 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2023-04-01 06:02:19,536 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__2 [2023-04-01 06:02:19,536 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__3 [2023-04-01 06:02:19,536 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2023-04-01 06:02:19,536 INFO L130 BoogieDeclarations]: Found specification of procedure free [2023-04-01 06:02:19,536 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2023-04-01 06:02:19,536 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-04-01 06:02:19,537 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-04-01 06:02:19,537 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-01 06:02:19,537 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-04-01 06:02:19,537 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2023-04-01 06:02:19,537 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-01 06:02:19,537 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2023-04-01 06:02:19,537 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2023-04-01 06:02:19,538 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-01 06:02:19,538 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2023-04-01 06:02:19,538 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2023-04-01 06:02:19,538 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2023-04-01 06:02:19,539 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2023-04-01 06:02:19,539 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2023-04-01 06:02:19,539 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2023-04-01 06:02:19,540 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2023-04-01 06:02:19,540 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2023-04-01 06:02:19,540 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2023-04-01 06:02:19,540 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2023-04-01 06:02:19,540 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2023-04-01 06:02:19,540 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2023-04-01 06:02:19,540 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2023-04-01 06:02:19,540 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2023-04-01 06:02:19,540 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2023-04-01 06:02:19,540 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2023-04-01 06:02:19,540 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-01 06:02:19,540 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-01 06:02:19,541 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-01 06:02:19,761 INFO L236 CfgBuilder]: Building ICFG [2023-04-01 06:02:19,763 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-01 06:02:20,273 INFO L277 CfgBuilder]: Performing block encoding [2023-04-01 06:02:20,436 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-01 06:02:20,436 INFO L302 CfgBuilder]: Removed 5 assume(true) statements. [2023-04-01 06:02:20,439 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 06:02:20 BoogieIcfgContainer [2023-04-01 06:02:20,439 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-01 06:02:20,442 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-01 06:02:20,442 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-01 06:02:20,445 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-01 06:02:20,445 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.04 06:02:18" (1/3) ... [2023-04-01 06:02:20,446 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a92352b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 06:02:20, skipping insertion in model container [2023-04-01 06:02:20,446 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:02:19" (2/3) ... [2023-04-01 06:02:20,446 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a92352b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 06:02:20, skipping insertion in model container [2023-04-01 06:02:20,446 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 06:02:20" (3/3) ... [2023-04-01 06:02:20,450 INFO L112 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product38.cil.c [2023-04-01 06:02:20,465 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-01 06:02:20,466 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-01 06:02:20,522 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-01 06:02:20,526 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=FINITE_AUTOMATA, 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;@3b383812, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-04-01 06:02:20,527 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-01 06:02:20,530 INFO L276 IsEmpty]: Start isEmpty. Operand has 151 states, 68 states have (on average 1.2647058823529411) internal successors, (86), 81 states have internal predecessors, (86), 49 states have call successors, (49), 31 states have call predecessors, (49), 31 states have return successors, (49), 45 states have call predecessors, (49), 49 states have call successors, (49) [2023-04-01 06:02:20,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-04-01 06:02:20,538 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:02:20,538 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-04-01 06:02:20,538 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 06:02:20,542 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:02:20,543 INFO L85 PathProgramCache]: Analyzing trace with hash 1680419242, now seen corresponding path program 1 times [2023-04-01 06:02:20,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:02:20,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348133472] [2023-04-01 06:02:20,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:02:20,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:02:20,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:02:20,801 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-04-01 06:02:20,802 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:02:20,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348133472] [2023-04-01 06:02:20,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [348133472] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 06:02:20,802 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 06:02:20,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-04-01 06:02:20,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501628678] [2023-04-01 06:02:20,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 06:02:20,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-04-01 06:02:20,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:02:20,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-04-01 06:02:20,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-04-01 06:02:20,843 INFO L87 Difference]: Start difference. First operand has 151 states, 68 states have (on average 1.2647058823529411) internal successors, (86), 81 states have internal predecessors, (86), 49 states have call successors, (49), 31 states have call predecessors, (49), 31 states have return successors, (49), 45 states have call predecessors, (49), 49 states have call successors, (49) Second operand has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-04-01 06:02:20,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:02:20,938 INFO L93 Difference]: Finished difference Result 232 states and 279 transitions. [2023-04-01 06:02:20,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-04-01 06:02:20,943 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 52 [2023-04-01 06:02:20,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:02:20,955 INFO L225 Difference]: With dead ends: 232 [2023-04-01 06:02:20,955 INFO L226 Difference]: Without dead ends: 118 [2023-04-01 06:02:20,961 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-04-01 06:02:20,965 INFO L413 NwaCegarLoop]: 126 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-01 06:02:20,966 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 126 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-01 06:02:20,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2023-04-01 06:02:21,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 118. [2023-04-01 06:02:21,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 59 states have (on average 1.2203389830508475) internal successors, (72), 69 states have internal predecessors, (72), 34 states have call successors, (34), 29 states have call predecessors, (34), 24 states have return successors, (29), 25 states have call predecessors, (29), 29 states have call successors, (29) [2023-04-01 06:02:21,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 135 transitions. [2023-04-01 06:02:21,007 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 135 transitions. Word has length 52 [2023-04-01 06:02:21,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:02:21,007 INFO L495 AbstractCegarLoop]: Abstraction has 118 states and 135 transitions. [2023-04-01 06:02:21,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-04-01 06:02:21,008 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 135 transitions. [2023-04-01 06:02:21,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-04-01 06:02:21,011 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:02:21,011 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-04-01 06:02:21,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-01 06:02:21,012 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 06:02:21,012 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:02:21,012 INFO L85 PathProgramCache]: Analyzing trace with hash 2136445887, now seen corresponding path program 1 times [2023-04-01 06:02:21,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:02:21,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241565986] [2023-04-01 06:02:21,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:02:21,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:02:21,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:02:21,166 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-04-01 06:02:21,166 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:02:21,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241565986] [2023-04-01 06:02:21,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [241565986] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 06:02:21,167 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 06:02:21,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-01 06:02:21,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820125912] [2023-04-01 06:02:21,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 06:02:21,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 06:02:21,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:02:21,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 06:02:21,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-01 06:02:21,171 INFO L87 Difference]: Start difference. First operand 118 states and 135 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-04-01 06:02:21,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:02:21,253 INFO L93 Difference]: Finished difference Result 186 states and 213 transitions. [2023-04-01 06:02:21,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 06:02:21,255 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 53 [2023-04-01 06:02:21,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:02:21,257 INFO L225 Difference]: With dead ends: 186 [2023-04-01 06:02:21,257 INFO L226 Difference]: Without dead ends: 110 [2023-04-01 06:02:21,258 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-01 06:02:21,259 INFO L413 NwaCegarLoop]: 106 mSDtfsCounter, 9 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 199 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-01 06:02:21,259 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 199 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-01 06:02:21,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2023-04-01 06:02:21,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2023-04-01 06:02:21,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 54 states have (on average 1.2222222222222223) internal successors, (66), 64 states have internal predecessors, (66), 31 states have call successors, (31), 28 states have call predecessors, (31), 24 states have return successors, (27), 23 states have call predecessors, (27), 27 states have call successors, (27) [2023-04-01 06:02:21,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 124 transitions. [2023-04-01 06:02:21,279 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 124 transitions. Word has length 53 [2023-04-01 06:02:21,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:02:21,280 INFO L495 AbstractCegarLoop]: Abstraction has 110 states and 124 transitions. [2023-04-01 06:02:21,280 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-04-01 06:02:21,282 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 124 transitions. [2023-04-01 06:02:21,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-04-01 06:02:21,286 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:02:21,287 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-04-01 06:02:21,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-01 06:02:21,287 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 06:02:21,287 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:02:21,288 INFO L85 PathProgramCache]: Analyzing trace with hash 529953115, now seen corresponding path program 1 times [2023-04-01 06:02:21,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:02:21,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245420937] [2023-04-01 06:02:21,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:02:21,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:02:21,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:02:21,541 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-04-01 06:02:21,541 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:02:21,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245420937] [2023-04-01 06:02:21,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [245420937] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 06:02:21,541 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 06:02:21,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-01 06:02:21,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790670995] [2023-04-01 06:02:21,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 06:02:21,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-01 06:02:21,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:02:21,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-01 06:02:21,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-04-01 06:02:21,543 INFO L87 Difference]: Start difference. First operand 110 states and 124 transitions. Second operand has 7 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 4 states have call successors, (16), 4 states have call predecessors, (16), 3 states have return successors, (10), 5 states have call predecessors, (10), 4 states have call successors, (10) [2023-04-01 06:02:21,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:02:21,780 INFO L93 Difference]: Finished difference Result 195 states and 224 transitions. [2023-04-01 06:02:21,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-04-01 06:02:21,781 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 4 states have call successors, (16), 4 states have call predecessors, (16), 3 states have return successors, (10), 5 states have call predecessors, (10), 4 states have call successors, (10) Word has length 56 [2023-04-01 06:02:21,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:02:21,785 INFO L225 Difference]: With dead ends: 195 [2023-04-01 06:02:21,785 INFO L226 Difference]: Without dead ends: 110 [2023-04-01 06:02:21,790 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-04-01 06:02:21,791 INFO L413 NwaCegarLoop]: 101 mSDtfsCounter, 113 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 197 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 292 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-01 06:02:21,792 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 292 Invalid, 201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 197 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-01 06:02:21,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2023-04-01 06:02:21,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2023-04-01 06:02:21,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 54 states have (on average 1.2037037037037037) internal successors, (65), 63 states have internal predecessors, (65), 31 states have call successors, (31), 28 states have call predecessors, (31), 24 states have return successors, (27), 23 states have call predecessors, (27), 27 states have call successors, (27) [2023-04-01 06:02:21,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 123 transitions. [2023-04-01 06:02:21,836 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 123 transitions. Word has length 56 [2023-04-01 06:02:21,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:02:21,837 INFO L495 AbstractCegarLoop]: Abstraction has 110 states and 123 transitions. [2023-04-01 06:02:21,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 4 states have call successors, (16), 4 states have call predecessors, (16), 3 states have return successors, (10), 5 states have call predecessors, (10), 4 states have call successors, (10) [2023-04-01 06:02:21,838 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 123 transitions. [2023-04-01 06:02:21,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-04-01 06:02:21,839 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:02:21,839 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-04-01 06:02:21,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-01 06:02:21,840 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 06:02:21,840 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:02:21,840 INFO L85 PathProgramCache]: Analyzing trace with hash -271662285, now seen corresponding path program 1 times [2023-04-01 06:02:21,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:02:21,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976723335] [2023-04-01 06:02:21,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:02:21,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:02:21,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:02:22,042 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-04-01 06:02:22,043 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:02:22,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976723335] [2023-04-01 06:02:22,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1976723335] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 06:02:22,043 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 06:02:22,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-01 06:02:22,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994102313] [2023-04-01 06:02:22,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 06:02:22,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 06:02:22,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:02:22,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 06:02:22,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-01 06:02:22,045 INFO L87 Difference]: Start difference. First operand 110 states and 123 transitions. Second operand has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 5 states have call successors, (19), 4 states have call predecessors, (19), 3 states have return successors, (13), 4 states have call predecessors, (13), 5 states have call successors, (13) [2023-04-01 06:02:22,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:02:22,366 INFO L93 Difference]: Finished difference Result 289 states and 342 transitions. [2023-04-01 06:02:22,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-01 06:02:22,367 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 5 states have call successors, (19), 4 states have call predecessors, (19), 3 states have return successors, (13), 4 states have call predecessors, (13), 5 states have call successors, (13) Word has length 69 [2023-04-01 06:02:22,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:02:22,375 INFO L225 Difference]: With dead ends: 289 [2023-04-01 06:02:22,375 INFO L226 Difference]: Without dead ends: 204 [2023-04-01 06:02:22,377 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-04-01 06:02:22,382 INFO L413 NwaCegarLoop]: 72 mSDtfsCounter, 149 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 314 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 439 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 314 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-01 06:02:22,382 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [156 Valid, 150 Invalid, 439 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [125 Valid, 314 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-01 06:02:22,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2023-04-01 06:02:22,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 187. [2023-04-01 06:02:22,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 98 states have (on average 1.183673469387755) internal successors, (116), 107 states have internal predecessors, (116), 45 states have call successors, (45), 42 states have call predecessors, (45), 43 states have return successors, (48), 44 states have call predecessors, (48), 41 states have call successors, (48) [2023-04-01 06:02:22,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 209 transitions. [2023-04-01 06:02:22,426 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 209 transitions. Word has length 69 [2023-04-01 06:02:22,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:02:22,426 INFO L495 AbstractCegarLoop]: Abstraction has 187 states and 209 transitions. [2023-04-01 06:02:22,427 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 5 states have call successors, (19), 4 states have call predecessors, (19), 3 states have return successors, (13), 4 states have call predecessors, (13), 5 states have call successors, (13) [2023-04-01 06:02:22,427 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 209 transitions. [2023-04-01 06:02:22,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-04-01 06:02:22,431 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:02:22,431 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-04-01 06:02:22,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-04-01 06:02:22,432 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 06:02:22,432 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:02:22,432 INFO L85 PathProgramCache]: Analyzing trace with hash 289077582, now seen corresponding path program 1 times [2023-04-01 06:02:22,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:02:22,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995602312] [2023-04-01 06:02:22,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:02:22,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:02:22,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:02:22,849 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-04-01 06:02:22,850 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:02:22,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995602312] [2023-04-01 06:02:22,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1995602312] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 06:02:22,850 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 06:02:22,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-04-01 06:02:22,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362803659] [2023-04-01 06:02:22,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 06:02:22,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-01 06:02:22,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:02:22,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-01 06:02:22,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2023-04-01 06:02:22,854 INFO L87 Difference]: Start difference. First operand 187 states and 209 transitions. Second operand has 12 states, 9 states have (on average 4.555555555555555) internal successors, (41), 9 states have internal predecessors, (41), 4 states have call successors, (21), 3 states have call predecessors, (21), 6 states have return successors, (15), 7 states have call predecessors, (15), 4 states have call successors, (15) [2023-04-01 06:02:23,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:02:23,319 INFO L93 Difference]: Finished difference Result 503 states and 578 transitions. [2023-04-01 06:02:23,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-04-01 06:02:23,319 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 9 states have (on average 4.555555555555555) internal successors, (41), 9 states have internal predecessors, (41), 4 states have call successors, (21), 3 states have call predecessors, (21), 6 states have return successors, (15), 7 states have call predecessors, (15), 4 states have call successors, (15) Word has length 78 [2023-04-01 06:02:23,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:02:23,322 INFO L225 Difference]: With dead ends: 503 [2023-04-01 06:02:23,323 INFO L226 Difference]: Without dead ends: 341 [2023-04-01 06:02:23,324 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=254, Unknown=0, NotChecked=0, Total=306 [2023-04-01 06:02:23,325 INFO L413 NwaCegarLoop]: 163 mSDtfsCounter, 343 mSDsluCounter, 728 mSDsCounter, 0 mSdLazyCounter, 644 mSolverCounterSat, 168 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 348 SdHoareTripleChecker+Valid, 891 SdHoareTripleChecker+Invalid, 812 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 168 IncrementalHoareTripleChecker+Valid, 644 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-01 06:02:23,326 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [348 Valid, 891 Invalid, 812 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [168 Valid, 644 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-01 06:02:23,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 341 states. [2023-04-01 06:02:23,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 341 to 329. [2023-04-01 06:02:23,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 329 states, 179 states have (on average 1.1955307262569832) internal successors, (214), 194 states have internal predecessors, (214), 77 states have call successors, (77), 72 states have call predecessors, (77), 72 states have return successors, (86), 76 states have call predecessors, (86), 73 states have call successors, (86) [2023-04-01 06:02:23,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 377 transitions. [2023-04-01 06:02:23,377 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 377 transitions. Word has length 78 [2023-04-01 06:02:23,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:02:23,378 INFO L495 AbstractCegarLoop]: Abstraction has 329 states and 377 transitions. [2023-04-01 06:02:23,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 9 states have (on average 4.555555555555555) internal successors, (41), 9 states have internal predecessors, (41), 4 states have call successors, (21), 3 states have call predecessors, (21), 6 states have return successors, (15), 7 states have call predecessors, (15), 4 states have call successors, (15) [2023-04-01 06:02:23,379 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 377 transitions. [2023-04-01 06:02:23,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-04-01 06:02:23,381 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:02:23,381 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-04-01 06:02:23,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-04-01 06:02:23,381 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 06:02:23,382 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:02:23,382 INFO L85 PathProgramCache]: Analyzing trace with hash 1258541528, now seen corresponding path program 1 times [2023-04-01 06:02:23,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:02:23,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650660550] [2023-04-01 06:02:23,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:02:23,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:02:23,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:02:24,106 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-04-01 06:02:24,107 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:02:24,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650660550] [2023-04-01 06:02:24,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1650660550] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 06:02:24,107 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 06:02:24,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-01 06:02:24,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126414974] [2023-04-01 06:02:24,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 06:02:24,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-01 06:02:24,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:02:24,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-01 06:02:24,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-04-01 06:02:24,109 INFO L87 Difference]: Start difference. First operand 329 states and 377 transitions. Second operand has 7 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 4 states have call successors, (21), 4 states have call predecessors, (21), 4 states have return successors, (15), 4 states have call predecessors, (15), 3 states have call successors, (15) [2023-04-01 06:02:25,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:02:25,240 INFO L93 Difference]: Finished difference Result 661 states and 783 transitions. [2023-04-01 06:02:25,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-04-01 06:02:25,241 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 4 states have call successors, (21), 4 states have call predecessors, (21), 4 states have return successors, (15), 4 states have call predecessors, (15), 3 states have call successors, (15) Word has length 78 [2023-04-01 06:02:25,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:02:25,247 INFO L225 Difference]: With dead ends: 661 [2023-04-01 06:02:25,247 INFO L226 Difference]: Without dead ends: 357 [2023-04-01 06:02:25,249 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2023-04-01 06:02:25,251 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 118 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 422 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 234 SdHoareTripleChecker+Invalid, 505 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 422 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-04-01 06:02:25,253 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 234 Invalid, 505 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 422 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-04-01 06:02:25,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 357 states. [2023-04-01 06:02:25,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 357 to 326. [2023-04-01 06:02:25,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 326 states, 176 states have (on average 1.1647727272727273) internal successors, (205), 191 states have internal predecessors, (205), 77 states have call successors, (77), 72 states have call predecessors, (77), 72 states have return successors, (86), 76 states have call predecessors, (86), 73 states have call successors, (86) [2023-04-01 06:02:25,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 368 transitions. [2023-04-01 06:02:25,314 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 368 transitions. Word has length 78 [2023-04-01 06:02:25,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:02:25,320 INFO L495 AbstractCegarLoop]: Abstraction has 326 states and 368 transitions. [2023-04-01 06:02:25,320 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 4 states have call successors, (21), 4 states have call predecessors, (21), 4 states have return successors, (15), 4 states have call predecessors, (15), 3 states have call successors, (15) [2023-04-01 06:02:25,320 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 368 transitions. [2023-04-01 06:02:25,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-04-01 06:02:25,321 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:02:25,322 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-04-01 06:02:25,322 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-04-01 06:02:25,322 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 06:02:25,322 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:02:25,322 INFO L85 PathProgramCache]: Analyzing trace with hash 17939403, now seen corresponding path program 1 times [2023-04-01 06:02:25,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:02:25,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970703512] [2023-04-01 06:02:25,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:02:25,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:02:25,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:02:25,742 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-04-01 06:02:25,742 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:02:25,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970703512] [2023-04-01 06:02:25,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [970703512] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 06:02:25,743 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 06:02:25,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-01 06:02:25,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944024280] [2023-04-01 06:02:25,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 06:02:25,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-01 06:02:25,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:02:25,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-01 06:02:25,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-04-01 06:02:25,745 INFO L87 Difference]: Start difference. First operand 326 states and 368 transitions. Second operand has 9 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 4 states have call successors, (22), 5 states have call predecessors, (22), 4 states have return successors, (16), 5 states have call predecessors, (16), 4 states have call successors, (16) [2023-04-01 06:02:26,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:02:26,637 INFO L93 Difference]: Finished difference Result 999 states and 1158 transitions. [2023-04-01 06:02:26,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-01 06:02:26,638 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 4 states have call successors, (22), 5 states have call predecessors, (22), 4 states have return successors, (16), 5 states have call predecessors, (16), 4 states have call successors, (16) Word has length 81 [2023-04-01 06:02:26,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:02:26,642 INFO L225 Difference]: With dead ends: 999 [2023-04-01 06:02:26,642 INFO L226 Difference]: Without dead ends: 759 [2023-04-01 06:02:26,644 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2023-04-01 06:02:26,644 INFO L413 NwaCegarLoop]: 129 mSDtfsCounter, 256 mSDsluCounter, 361 mSDsCounter, 0 mSdLazyCounter, 556 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 277 SdHoareTripleChecker+Valid, 490 SdHoareTripleChecker+Invalid, 648 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 556 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-04-01 06:02:26,644 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [277 Valid, 490 Invalid, 648 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 556 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-04-01 06:02:26,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 759 states. [2023-04-01 06:02:26,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 759 to 654. [2023-04-01 06:02:26,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 654 states, 358 states have (on average 1.1731843575418994) internal successors, (420), 387 states have internal predecessors, (420), 149 states have call successors, (149), 140 states have call predecessors, (149), 146 states have return successors, (177), 153 states have call predecessors, (177), 145 states have call successors, (177) [2023-04-01 06:02:26,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 654 states to 654 states and 746 transitions. [2023-04-01 06:02:26,767 INFO L78 Accepts]: Start accepts. Automaton has 654 states and 746 transitions. Word has length 81 [2023-04-01 06:02:26,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:02:26,768 INFO L495 AbstractCegarLoop]: Abstraction has 654 states and 746 transitions. [2023-04-01 06:02:26,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 4 states have call successors, (22), 5 states have call predecessors, (22), 4 states have return successors, (16), 5 states have call predecessors, (16), 4 states have call successors, (16) [2023-04-01 06:02:26,768 INFO L276 IsEmpty]: Start isEmpty. Operand 654 states and 746 transitions. [2023-04-01 06:02:26,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2023-04-01 06:02:26,779 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:02:26,780 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 06:02:26,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-04-01 06:02:26,780 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 06:02:26,781 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:02:26,781 INFO L85 PathProgramCache]: Analyzing trace with hash 241034141, now seen corresponding path program 1 times [2023-04-01 06:02:26,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:02:26,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725466104] [2023-04-01 06:02:26,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:02:26,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:02:26,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:02:27,063 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 19 proven. 6 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-04-01 06:02:27,063 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:02:27,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725466104] [2023-04-01 06:02:27,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1725466104] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 06:02:27,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2018813572] [2023-04-01 06:02:27,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:02:27,064 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 06:02:27,064 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 06:02:27,077 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 06:02:27,133 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-04-01 06:02:27,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:02:27,289 INFO L262 TraceCheckSpWp]: Trace formula consists of 521 conjuncts, 8 conjunts are in the unsatisfiable core [2023-04-01 06:02:27,300 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 06:02:27,528 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 23 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 06:02:27,528 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 06:02:28,143 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 19 proven. 6 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-04-01 06:02:28,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2018813572] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 06:02:28,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [712454051] [2023-04-01 06:02:28,182 INFO L159 IcfgInterpreter]: Started Sifa with 100 locations of interest [2023-04-01 06:02:28,182 INFO L166 IcfgInterpreter]: Building call graph [2023-04-01 06:02:28,193 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-01 06:02:28,220 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-01 06:02:28,221 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-01 06:02:28,554 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 31 for LOIs [2023-04-01 06:02:28,602 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 36 for LOIs [2023-04-01 06:02:28,822 INFO L197 IcfgInterpreter]: Interpreting procedure runTest with input of size 36 for LOIs [2023-04-01 06:02:28,910 INFO L197 IcfgInterpreter]: Interpreting procedure test with input of size 36 for LOIs [2023-04-01 06:02:31,723 INFO L197 IcfgInterpreter]: Interpreting procedure waterRise with input of size 37 for LOIs [2023-04-01 06:02:31,739 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 29 for LOIs [2023-04-01 06:02:32,178 INFO L197 IcfgInterpreter]: Interpreting procedure lowerWaterLevel with input of size 33 for LOIs [2023-04-01 06:02:32,183 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment with input of size 54 for LOIs [2023-04-01 06:02:32,555 INFO L197 IcfgInterpreter]: Interpreting procedure isMethaneAlarm with input of size 47 for LOIs [2023-04-01 06:02:32,664 INFO L197 IcfgInterpreter]: Interpreting procedure isMethaneLevelCritical with input of size 47 for LOIs [2023-04-01 06:02:32,670 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__highWaterSensor with input of size 52 for LOIs [2023-04-01 06:02:33,011 INFO L197 IcfgInterpreter]: Interpreting procedure isHighWaterLevel with input of size 24 for LOIs [2023-04-01 06:02:33,138 INFO L197 IcfgInterpreter]: Interpreting procedure isHighWaterSensorDry with input of size 24 for LOIs [2023-04-01 06:02:33,143 INFO L197 IcfgInterpreter]: Interpreting procedure activatePump with input of size 36 for LOIs [2023-04-01 06:02:33,147 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__base with input of size 35 for LOIs [2023-04-01 06:02:33,150 INFO L197 IcfgInterpreter]: Interpreting procedure setup with input of size 26 for LOIs [2023-04-01 06:02:33,152 INFO L197 IcfgInterpreter]: Interpreting procedure select_features with input of size 26 for LOIs [2023-04-01 06:02:33,154 INFO L197 IcfgInterpreter]: Interpreting procedure __utac_acc__Specification5_spec__3 with input of size 31 for LOIs [2023-04-01 06:02:33,300 INFO L197 IcfgInterpreter]: Interpreting procedure __automaton_fail with input of size 39 for LOIs [2023-04-01 06:02:33,303 INFO L197 IcfgInterpreter]: Interpreting procedure getWaterLevel with input of size 31 for LOIs [2023-04-01 06:02:33,305 INFO L197 IcfgInterpreter]: Interpreting procedure __utac_acc__Specification5_spec__2 with input of size 23 for LOIs [2023-04-01 06:02:33,328 INFO L197 IcfgInterpreter]: Interpreting procedure isPumpRunning with input of size 20 for LOIs [2023-04-01 06:02:33,330 INFO L197 IcfgInterpreter]: Interpreting procedure __utac_acc__Specification5_spec__1 with input of size 28 for LOIs [2023-04-01 06:02:33,333 INFO L197 IcfgInterpreter]: Interpreting procedure valid_product with input of size 26 for LOIs [2023-04-01 06:02:33,336 INFO L197 IcfgInterpreter]: Interpreting procedure select_helpers with input of size 26 for LOIs [2023-04-01 06:02:33,338 INFO L180 IcfgInterpreter]: Interpretation finished [2023-04-01 06:02:38,709 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '8142#(and (<= 1 |#StackHeapBarrier|) (not (= ~pumpRunning~0 0)) (<= ~pumpRunning~0 2147483647) (= ~methaneLevelCritical~0 0) (= ~head~0.offset 0) (= 1 ~systemActive~0) (<= 0 (+ ~waterLevel~0 2147483648)) (<= ~waterLevel~0 2147483647) (= ~head~0.base 0) (<= 0 (+ ~pumpRunning~0 2147483648)) (= |#NULL.offset| 0) (= ~switchedOnBeforeTS~0 0) (= ~cleanupTimeShifts~0 4) (= |#NULL.base| 0))' at error location [2023-04-01 06:02:38,709 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-04-01 06:02:38,709 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 06:02:38,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 7] total 19 [2023-04-01 06:02:38,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701794033] [2023-04-01 06:02:38,710 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 06:02:38,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-04-01 06:02:38,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:02:38,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-04-01 06:02:38,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=517, Invalid=5335, Unknown=0, NotChecked=0, Total=5852 [2023-04-01 06:02:38,714 INFO L87 Difference]: Start difference. First operand 654 states and 746 transitions. Second operand has 19 states, 12 states have (on average 9.583333333333334) internal successors, (115), 15 states have internal predecessors, (115), 7 states have call successors, (52), 6 states have call predecessors, (52), 11 states have return successors, (51), 10 states have call predecessors, (51), 6 states have call successors, (51) [2023-04-01 06:02:39,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:02:39,788 INFO L93 Difference]: Finished difference Result 1351 states and 1587 transitions. [2023-04-01 06:02:39,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-04-01 06:02:39,789 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 12 states have (on average 9.583333333333334) internal successors, (115), 15 states have internal predecessors, (115), 7 states have call successors, (52), 6 states have call predecessors, (52), 11 states have return successors, (51), 10 states have call predecessors, (51), 6 states have call successors, (51) Word has length 133 [2023-04-01 06:02:39,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:02:39,795 INFO L225 Difference]: With dead ends: 1351 [2023-04-01 06:02:39,797 INFO L226 Difference]: Without dead ends: 780 [2023-04-01 06:02:39,801 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 431 GetRequests, 322 SyntacticMatches, 17 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4023 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=681, Invalid=8061, Unknown=0, NotChecked=0, Total=8742 [2023-04-01 06:02:39,804 INFO L413 NwaCegarLoop]: 222 mSDtfsCounter, 297 mSDsluCounter, 1636 mSDsCounter, 0 mSdLazyCounter, 1419 mSolverCounterSat, 147 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 304 SdHoareTripleChecker+Valid, 1858 SdHoareTripleChecker+Invalid, 1566 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 147 IncrementalHoareTripleChecker+Valid, 1419 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-04-01 06:02:39,804 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [304 Valid, 1858 Invalid, 1566 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [147 Valid, 1419 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-04-01 06:02:39,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 780 states. [2023-04-01 06:02:39,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 780 to 641. [2023-04-01 06:02:39,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 641 states, 350 states have (on average 1.1714285714285715) internal successors, (410), 388 states have internal predecessors, (410), 148 states have call successors, (148), 141 states have call predecessors, (148), 142 states have return successors, (169), 142 states have call predecessors, (169), 144 states have call successors, (169) [2023-04-01 06:02:39,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 641 states to 641 states and 727 transitions. [2023-04-01 06:02:39,855 INFO L78 Accepts]: Start accepts. Automaton has 641 states and 727 transitions. Word has length 133 [2023-04-01 06:02:39,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:02:39,856 INFO L495 AbstractCegarLoop]: Abstraction has 641 states and 727 transitions. [2023-04-01 06:02:39,856 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 12 states have (on average 9.583333333333334) internal successors, (115), 15 states have internal predecessors, (115), 7 states have call successors, (52), 6 states have call predecessors, (52), 11 states have return successors, (51), 10 states have call predecessors, (51), 6 states have call successors, (51) [2023-04-01 06:02:39,856 INFO L276 IsEmpty]: Start isEmpty. Operand 641 states and 727 transitions. [2023-04-01 06:02:39,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2023-04-01 06:02:39,861 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:02:39,861 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 06:02:39,876 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-04-01 06:02:40,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 06:02:40,069 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 06:02:40,070 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:02:40,070 INFO L85 PathProgramCache]: Analyzing trace with hash -1422460300, now seen corresponding path program 1 times [2023-04-01 06:02:40,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:02:40,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406111682] [2023-04-01 06:02:40,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:02:40,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:02:40,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:02:40,303 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 39 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-04-01 06:02:40,303 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:02:40,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406111682] [2023-04-01 06:02:40,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1406111682] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 06:02:40,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [38414985] [2023-04-01 06:02:40,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:02:40,304 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 06:02:40,304 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 06:02:40,305 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 06:02:40,330 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-04-01 06:02:40,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:02:40,473 INFO L262 TraceCheckSpWp]: Trace formula consists of 646 conjuncts, 23 conjunts are in the unsatisfiable core [2023-04-01 06:02:40,485 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 06:02:40,608 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 84 proven. 2 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-04-01 06:02:40,608 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 06:02:40,941 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 40 proven. 3 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2023-04-01 06:02:40,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [38414985] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 06:02:40,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [253158430] [2023-04-01 06:02:40,950 INFO L159 IcfgInterpreter]: Started Sifa with 99 locations of interest [2023-04-01 06:02:40,950 INFO L166 IcfgInterpreter]: Building call graph [2023-04-01 06:02:40,952 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-01 06:02:40,952 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-01 06:02:40,952 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-01 06:02:41,082 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 31 for LOIs [2023-04-01 06:02:41,115 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 36 for LOIs [2023-04-01 06:02:41,227 INFO L197 IcfgInterpreter]: Interpreting procedure runTest with input of size 36 for LOIs [2023-04-01 06:02:41,265 INFO L197 IcfgInterpreter]: Interpreting procedure test with input of size 36 for LOIs [2023-04-01 06:02:43,613 INFO L197 IcfgInterpreter]: Interpreting procedure waterRise with input of size 45 for LOIs [2023-04-01 06:02:43,619 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 32 for LOIs [2023-04-01 06:02:43,946 INFO L197 IcfgInterpreter]: Interpreting procedure lowerWaterLevel with input of size 33 for LOIs [2023-04-01 06:02:43,951 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment with input of size 37 for LOIs [2023-04-01 06:02:44,023 INFO L197 IcfgInterpreter]: Interpreting procedure isMethaneAlarm with input of size 28 for LOIs [2023-04-01 06:02:44,041 INFO L197 IcfgInterpreter]: Interpreting procedure isMethaneLevelCritical with input of size 28 for LOIs [2023-04-01 06:02:44,045 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__highWaterSensor with input of size 26 for LOIs [2023-04-01 06:02:44,177 INFO L197 IcfgInterpreter]: Interpreting procedure isHighWaterLevel with input of size 24 for LOIs [2023-04-01 06:02:44,262 INFO L197 IcfgInterpreter]: Interpreting procedure isHighWaterSensorDry with input of size 24 for LOIs [2023-04-01 06:02:44,267 INFO L197 IcfgInterpreter]: Interpreting procedure activatePump with input of size 36 for LOIs [2023-04-01 06:02:44,273 INFO L197 IcfgInterpreter]: Interpreting procedure setup with input of size 26 for LOIs [2023-04-01 06:02:44,276 INFO L197 IcfgInterpreter]: Interpreting procedure select_features with input of size 26 for LOIs [2023-04-01 06:02:44,277 INFO L197 IcfgInterpreter]: Interpreting procedure __utac_acc__Specification5_spec__3 with input of size 43 for LOIs [2023-04-01 06:02:44,494 INFO L197 IcfgInterpreter]: Interpreting procedure __automaton_fail with input of size 50 for LOIs [2023-04-01 06:02:44,497 INFO L197 IcfgInterpreter]: Interpreting procedure getWaterLevel with input of size 43 for LOIs [2023-04-01 06:02:44,500 INFO L197 IcfgInterpreter]: Interpreting procedure __utac_acc__Specification5_spec__2 with input of size 27 for LOIs [2023-04-01 06:02:44,525 INFO L197 IcfgInterpreter]: Interpreting procedure isPumpRunning with input of size 24 for LOIs [2023-04-01 06:02:44,527 INFO L197 IcfgInterpreter]: Interpreting procedure __utac_acc__Specification5_spec__1 with input of size 28 for LOIs [2023-04-01 06:02:44,529 INFO L197 IcfgInterpreter]: Interpreting procedure valid_product with input of size 26 for LOIs [2023-04-01 06:02:44,532 INFO L197 IcfgInterpreter]: Interpreting procedure select_helpers with input of size 26 for LOIs [2023-04-01 06:02:44,534 INFO L180 IcfgInterpreter]: Interpretation finished [2023-04-01 06:02:50,548 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '12164#(and (not (= ~pumpRunning~0 0)) (<= ~pumpRunning~0 1) (= ~methaneLevelCritical~0 0) (= ~head~0.offset 0) (= 1 ~systemActive~0) (<= ~waterLevel~0 2147483647) (<= 0 ~pumpRunning~0) (= ~head~0.base 0) (= |#NULL.offset| 0) (<= ~pumpRunning~0 (+ 2147483649 ~waterLevel~0)) (<= ~pumpRunning~0 |#StackHeapBarrier|) (= ~switchedOnBeforeTS~0 0) (= ~cleanupTimeShifts~0 4) (= |#NULL.base| 0))' at error location [2023-04-01 06:02:50,549 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-04-01 06:02:50,549 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 06:02:50,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2023-04-01 06:02:50,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722902696] [2023-04-01 06:02:50,549 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 06:02:50,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-04-01 06:02:50,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:02:50,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-04-01 06:02:50,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=492, Invalid=5670, Unknown=0, NotChecked=0, Total=6162 [2023-04-01 06:02:50,553 INFO L87 Difference]: Start difference. First operand 641 states and 727 transitions. Second operand has 20 states, 14 states have (on average 8.714285714285714) internal successors, (122), 15 states have internal predecessors, (122), 5 states have call successors, (57), 4 states have call predecessors, (57), 11 states have return successors, (55), 10 states have call predecessors, (55), 5 states have call successors, (55) [2023-04-01 06:02:52,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:02:52,698 INFO L93 Difference]: Finished difference Result 2525 states and 2960 transitions. [2023-04-01 06:02:52,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-04-01 06:02:52,699 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 14 states have (on average 8.714285714285714) internal successors, (122), 15 states have internal predecessors, (122), 5 states have call successors, (57), 4 states have call predecessors, (57), 11 states have return successors, (55), 10 states have call predecessors, (55), 5 states have call successors, (55) Word has length 177 [2023-04-01 06:02:52,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:02:52,709 INFO L225 Difference]: With dead ends: 2525 [2023-04-01 06:02:52,710 INFO L226 Difference]: Without dead ends: 1927 [2023-04-01 06:02:52,715 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 575 GetRequests, 465 SyntacticMatches, 5 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4014 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=701, Invalid=10641, Unknown=0, NotChecked=0, Total=11342 [2023-04-01 06:02:52,717 INFO L413 NwaCegarLoop]: 259 mSDtfsCounter, 252 mSDsluCounter, 2255 mSDsCounter, 0 mSdLazyCounter, 2157 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 261 SdHoareTripleChecker+Valid, 2514 SdHoareTripleChecker+Invalid, 2233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 2157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-04-01 06:02:52,718 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [261 Valid, 2514 Invalid, 2233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 2157 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-04-01 06:02:52,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1927 states. [2023-04-01 06:02:52,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1927 to 1551. [2023-04-01 06:02:52,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1551 states, 848 states have (on average 1.1485849056603774) internal successors, (974), 935 states have internal predecessors, (974), 350 states have call successors, (350), 338 states have call predecessors, (350), 352 states have return successors, (430), 346 states have call predecessors, (430), 346 states have call successors, (430) [2023-04-01 06:02:52,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1551 states to 1551 states and 1754 transitions. [2023-04-01 06:02:52,920 INFO L78 Accepts]: Start accepts. Automaton has 1551 states and 1754 transitions. Word has length 177 [2023-04-01 06:02:52,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:02:52,935 INFO L495 AbstractCegarLoop]: Abstraction has 1551 states and 1754 transitions. [2023-04-01 06:02:52,935 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 14 states have (on average 8.714285714285714) internal successors, (122), 15 states have internal predecessors, (122), 5 states have call successors, (57), 4 states have call predecessors, (57), 11 states have return successors, (55), 10 states have call predecessors, (55), 5 states have call successors, (55) [2023-04-01 06:02:52,936 INFO L276 IsEmpty]: Start isEmpty. Operand 1551 states and 1754 transitions. [2023-04-01 06:02:52,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2023-04-01 06:02:52,940 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:02:52,940 INFO L195 NwaCegarLoop]: trace histogram [5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-04-01 06:02:52,963 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-04-01 06:02:53,185 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,SelfDestructingSolverStorable8 [2023-04-01 06:02:53,186 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 06:02:53,186 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:02:53,186 INFO L85 PathProgramCache]: Analyzing trace with hash 1232587135, now seen corresponding path program 1 times [2023-04-01 06:02:53,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:02:53,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908093433] [2023-04-01 06:02:53,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:02:53,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:02:53,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:02:54,244 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 50 proven. 20 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2023-04-01 06:02:54,244 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:02:54,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908093433] [2023-04-01 06:02:54,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [908093433] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 06:02:54,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1437543052] [2023-04-01 06:02:54,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:02:54,245 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 06:02:54,245 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 06:02:54,246 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) [2023-04-01 06:02:54,249 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-04-01 06:02:54,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:02:54,430 INFO L262 TraceCheckSpWp]: Trace formula consists of 666 conjuncts, 46 conjunts are in the unsatisfiable core [2023-04-01 06:02:54,438 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 06:02:54,728 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 87 proven. 19 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-04-01 06:02:54,728 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 06:02:56,790 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 62 proven. 8 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2023-04-01 06:02:56,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1437543052] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 06:02:56,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2144640498] [2023-04-01 06:02:56,793 INFO L159 IcfgInterpreter]: Started Sifa with 102 locations of interest [2023-04-01 06:02:56,794 INFO L166 IcfgInterpreter]: Building call graph [2023-04-01 06:02:56,794 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-01 06:02:56,794 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-01 06:02:56,794 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-01 06:02:57,008 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 31 for LOIs [2023-04-01 06:02:57,057 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 36 for LOIs [2023-04-01 06:02:57,211 INFO L197 IcfgInterpreter]: Interpreting procedure runTest with input of size 36 for LOIs [2023-04-01 06:02:57,246 INFO L197 IcfgInterpreter]: Interpreting procedure test with input of size 36 for LOIs [2023-04-01 06:03:01,923 INFO L197 IcfgInterpreter]: Interpreting procedure waterRise with input of size 41 for LOIs [2023-04-01 06:03:01,952 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 36 for LOIs [2023-04-01 06:03:02,664 INFO L197 IcfgInterpreter]: Interpreting procedure lowerWaterLevel with input of size 37 for LOIs [2023-04-01 06:03:02,671 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment with input of size 41 for LOIs [2023-04-01 06:03:02,876 INFO L197 IcfgInterpreter]: Interpreting procedure isMethaneAlarm with input of size 32 for LOIs [2023-04-01 06:03:02,918 INFO L197 IcfgInterpreter]: Interpreting procedure isMethaneLevelCritical with input of size 32 for LOIs [2023-04-01 06:03:02,921 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__highWaterSensor with input of size 28 for LOIs [2023-04-01 06:03:03,174 INFO L197 IcfgInterpreter]: Interpreting procedure isHighWaterLevel with input of size 26 for LOIs [2023-04-01 06:03:03,319 INFO L197 IcfgInterpreter]: Interpreting procedure isHighWaterSensorDry with input of size 26 for LOIs [2023-04-01 06:03:03,324 INFO L197 IcfgInterpreter]: Interpreting procedure activatePump with input of size 38 for LOIs [2023-04-01 06:03:03,329 INFO L197 IcfgInterpreter]: Interpreting procedure deactivatePump with input of size 37 for LOIs [2023-04-01 06:03:03,332 INFO L197 IcfgInterpreter]: Interpreting procedure changeMethaneLevel with input of size 40 for LOIs [2023-04-01 06:03:03,338 INFO L197 IcfgInterpreter]: Interpreting procedure setup with input of size 26 for LOIs [2023-04-01 06:03:03,340 INFO L197 IcfgInterpreter]: Interpreting procedure select_features with input of size 26 for LOIs [2023-04-01 06:03:03,342 INFO L197 IcfgInterpreter]: Interpreting procedure __utac_acc__Specification5_spec__3 with input of size 53 for LOIs [2023-04-01 06:03:03,950 INFO L197 IcfgInterpreter]: Interpreting procedure __automaton_fail with input of size 60 for LOIs [2023-04-01 06:03:03,957 INFO L197 IcfgInterpreter]: Interpreting procedure getWaterLevel with input of size 53 for LOIs [2023-04-01 06:03:03,963 INFO L197 IcfgInterpreter]: Interpreting procedure __utac_acc__Specification5_spec__2 with input of size 31 for LOIs [2023-04-01 06:03:04,008 INFO L197 IcfgInterpreter]: Interpreting procedure isPumpRunning with input of size 28 for LOIs [2023-04-01 06:03:04,011 INFO L197 IcfgInterpreter]: Interpreting procedure __utac_acc__Specification5_spec__1 with input of size 28 for LOIs [2023-04-01 06:03:04,015 INFO L197 IcfgInterpreter]: Interpreting procedure valid_product with input of size 26 for LOIs [2023-04-01 06:03:04,018 INFO L197 IcfgInterpreter]: Interpreting procedure select_helpers with input of size 26 for LOIs [2023-04-01 06:03:04,020 INFO L180 IcfgInterpreter]: Interpretation finished [2023-04-01 06:03:13,620 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '19239#(and (not (= ~pumpRunning~0 0)) (<= ~pumpRunning~0 1) (= ~head~0.offset 0) (= 1 ~systemActive~0) (<= ~waterLevel~0 2147483647) (<= 0 ~pumpRunning~0) (= ~head~0.base 0) (= |#NULL.offset| 0) (<= ~pumpRunning~0 (+ 2147483649 ~waterLevel~0)) (<= ~pumpRunning~0 |#StackHeapBarrier|) (= ~switchedOnBeforeTS~0 0) (<= ~pumpRunning~0 (+ ~methaneLevelCritical~0 1)) (= ~cleanupTimeShifts~0 4) (= |#NULL.base| 0))' at error location [2023-04-01 06:03:13,620 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-04-01 06:03:13,620 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 06:03:13,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 15] total 36 [2023-04-01 06:03:13,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874079130] [2023-04-01 06:03:13,621 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 06:03:13,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2023-04-01 06:03:13,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:03:13,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2023-04-01 06:03:13,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=663, Invalid=9237, Unknown=0, NotChecked=0, Total=9900 [2023-04-01 06:03:13,625 INFO L87 Difference]: Start difference. First operand 1551 states and 1754 transitions. Second operand has 36 states, 27 states have (on average 5.074074074074074) internal successors, (137), 27 states have internal predecessors, (137), 12 states have call successors, (55), 5 states have call predecessors, (55), 18 states have return successors, (60), 21 states have call predecessors, (60), 11 states have call successors, (60) [2023-04-01 06:03:15,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:03:15,910 INFO L93 Difference]: Finished difference Result 3084 states and 3629 transitions. [2023-04-01 06:03:15,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2023-04-01 06:03:15,910 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 27 states have (on average 5.074074074074074) internal successors, (137), 27 states have internal predecessors, (137), 12 states have call successors, (55), 5 states have call predecessors, (55), 18 states have return successors, (60), 21 states have call predecessors, (60), 11 states have call successors, (60) Word has length 185 [2023-04-01 06:03:15,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:03:15,912 INFO L225 Difference]: With dead ends: 3084 [2023-04-01 06:03:15,912 INFO L226 Difference]: Without dead ends: 0 [2023-04-01 06:03:15,922 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 628 GetRequests, 479 SyntacticMatches, 14 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7864 ImplicationChecksByTransitivity, 10.8s TimeCoverageRelationStatistics Valid=1253, Invalid=17379, Unknown=0, NotChecked=0, Total=18632 [2023-04-01 06:03:15,923 INFO L413 NwaCegarLoop]: 70 mSDtfsCounter, 598 mSDsluCounter, 715 mSDsCounter, 0 mSdLazyCounter, 2862 mSolverCounterSat, 586 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 606 SdHoareTripleChecker+Valid, 785 SdHoareTripleChecker+Invalid, 3448 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 586 IncrementalHoareTripleChecker+Valid, 2862 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-04-01 06:03:15,923 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [606 Valid, 785 Invalid, 3448 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [586 Valid, 2862 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-04-01 06:03:15,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-04-01 06:03:15,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-04-01 06:03:15,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-04-01 06:03:15,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-04-01 06:03:15,924 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 185 [2023-04-01 06:03:15,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:03:15,925 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-04-01 06:03:15,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 27 states have (on average 5.074074074074074) internal successors, (137), 27 states have internal predecessors, (137), 12 states have call successors, (55), 5 states have call predecessors, (55), 18 states have return successors, (60), 21 states have call predecessors, (60), 11 states have call successors, (60) [2023-04-01 06:03:15,925 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-04-01 06:03:15,925 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-04-01 06:03:15,927 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-04-01 06:03:15,937 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-04-01 06:03:16,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 06:03:16,136 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.