/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_product37.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-01 06:02:13,929 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-01 06:02:13,931 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-01 06:02:13,969 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-01 06:02:13,970 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-01 06:02:13,972 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-01 06:02:13,976 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-01 06:02:13,978 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-01 06:02:13,980 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-01 06:02:13,985 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-01 06:02:13,986 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-01 06:02:13,987 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-01 06:02:13,988 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-01 06:02:13,990 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-01 06:02:13,991 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-01 06:02:13,992 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-01 06:02:13,993 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-01 06:02:13,994 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-01 06:02:13,995 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-01 06:02:13,998 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-01 06:02:13,999 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-01 06:02:14,000 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-01 06:02:14,001 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-01 06:02:14,002 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-01 06:02:14,009 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-04-01 06:02:14,010 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-04-01 06:02:14,010 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-04-01 06:02:14,011 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-04-01 06:02:14,011 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-04-01 06:02:14,012 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-04-01 06:02:14,012 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-01 06:02:14,012 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-01 06:02:14,013 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-01 06:02:14,014 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-01 06:02:14,014 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-01 06:02:14,014 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-01 06:02:14,015 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-01 06:02:14,015 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-01 06:02:14,015 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-01 06:02:14,016 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-01 06:02:14,016 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-01 06:02:14,017 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 06:02:14,033 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-01 06:02:14,034 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-01 06:02:14,034 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-01 06:02:14,034 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-01 06:02:14,035 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-01 06:02:14,035 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-01 06:02:14,035 INFO L138 SettingsManager]: * User list type=DISABLED [2023-04-01 06:02:14,035 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-04-01 06:02:14,035 INFO L138 SettingsManager]: * Explicit value domain=true [2023-04-01 06:02:14,035 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-04-01 06:02:14,036 INFO L138 SettingsManager]: * Octagon Domain=false [2023-04-01 06:02:14,036 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-04-01 06:02:14,036 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-04-01 06:02:14,036 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-04-01 06:02:14,036 INFO L138 SettingsManager]: * Interval Domain=false [2023-04-01 06:02:14,036 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-04-01 06:02:14,036 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-04-01 06:02:14,037 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-04-01 06:02:14,037 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-01 06:02:14,037 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-01 06:02:14,037 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-01 06:02:14,037 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-01 06:02:14,038 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-01 06:02:14,038 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-01 06:02:14,038 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-01 06:02:14,038 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-01 06:02:14,038 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-01 06:02:14,038 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-01 06:02:14,038 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-01 06:02:14,038 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-01 06:02:14,038 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-01 06:02:14,039 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-01 06:02:14,039 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 06:02:14,039 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-01 06:02:14,039 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-04-01 06:02:14,039 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-01 06:02:14,039 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-01 06:02:14,039 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-04-01 06:02:14,039 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-01 06:02:14,040 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-01 06:02:14,040 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-04-01 06:02:14,040 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> OctagonDomain [2023-04-01 06:02:14,220 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-01 06:02:14,238 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-01 06:02:14,240 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-01 06:02:14,241 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-01 06:02:14,241 INFO L275 PluginConnector]: CDTParser initialized [2023-04-01 06:02:14,242 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/minepump_spec5_product37.cil.c [2023-04-01 06:02:15,403 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-01 06:02:15,664 INFO L351 CDTParser]: Found 1 translation units. [2023-04-01 06:02:15,664 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec5_product37.cil.c [2023-04-01 06:02:15,677 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bff92c080/88c85454b89746b8831fb22b92031b2e/FLAG562a10c61 [2023-04-01 06:02:15,692 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bff92c080/88c85454b89746b8831fb22b92031b2e [2023-04-01 06:02:15,695 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-01 06:02:15,697 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-01 06:02:15,700 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-01 06:02:15,701 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-01 06:02:15,707 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-01 06:02:15,708 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 06:02:15" (1/1) ... [2023-04-01 06:02:15,709 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a9172fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:02:15, skipping insertion in model container [2023-04-01 06:02:15,710 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 06:02:15" (1/1) ... [2023-04-01 06:02:15,716 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-01 06:02:15,752 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-01 06:02:15,942 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_product37.cil.c[5071,5084] [2023-04-01 06:02:16,056 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 06:02:16,069 INFO L203 MainTranslator]: Completed pre-run [2023-04-01 06:02:16,113 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_product37.cil.c[5071,5084] [2023-04-01 06:02:16,140 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 06:02:16,156 INFO L208 MainTranslator]: Completed translation [2023-04-01 06:02:16,157 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:02:16 WrapperNode [2023-04-01 06:02:16,157 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-01 06:02:16,158 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-01 06:02:16,158 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-01 06:02:16,158 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-01 06:02:16,171 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:02:16" (1/1) ... [2023-04-01 06:02:16,171 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:02:16" (1/1) ... [2023-04-01 06:02:16,187 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:02:16" (1/1) ... [2023-04-01 06:02:16,188 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:02:16" (1/1) ... [2023-04-01 06:02:16,227 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:02:16" (1/1) ... [2023-04-01 06:02:16,234 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:02:16" (1/1) ... [2023-04-01 06:02:16,237 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:02:16" (1/1) ... [2023-04-01 06:02:16,239 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:02:16" (1/1) ... [2023-04-01 06:02:16,244 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-01 06:02:16,244 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-01 06:02:16,245 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-01 06:02:16,245 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-01 06:02:16,245 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:02:16" (1/1) ... [2023-04-01 06:02:16,253 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 06:02:16,282 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 06:02:16,298 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 06:02:16,331 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 06:02:16,347 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-01 06:02:16,347 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-01 06:02:16,348 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2023-04-01 06:02:16,348 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-01 06:02:16,349 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2023-04-01 06:02:16,349 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2023-04-01 06:02:16,349 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2023-04-01 06:02:16,350 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2023-04-01 06:02:16,350 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2023-04-01 06:02:16,350 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2023-04-01 06:02:16,350 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2023-04-01 06:02:16,350 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__1 [2023-04-01 06:02:16,350 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__2 [2023-04-01 06:02:16,350 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__3 [2023-04-01 06:02:16,350 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2023-04-01 06:02:16,350 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2023-04-01 06:02:16,351 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2023-04-01 06:02:16,351 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2023-04-01 06:02:16,351 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-01 06:02:16,351 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2023-04-01 06:02:16,351 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2023-04-01 06:02:16,351 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2023-04-01 06:02:16,351 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2023-04-01 06:02:16,351 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2023-04-01 06:02:16,351 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2023-04-01 06:02:16,351 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2023-04-01 06:02:16,352 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2023-04-01 06:02:16,352 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2023-04-01 06:02:16,352 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2023-04-01 06:02:16,352 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2023-04-01 06:02:16,352 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2023-04-01 06:02:16,352 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2023-04-01 06:02:16,352 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2023-04-01 06:02:16,352 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2023-04-01 06:02:16,352 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2023-04-01 06:02:16,353 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2023-04-01 06:02:16,353 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2023-04-01 06:02:16,353 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2023-04-01 06:02:16,353 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2023-04-01 06:02:16,353 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2023-04-01 06:02:16,353 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2023-04-01 06:02:16,353 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-01 06:02:16,353 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-01 06:02:16,353 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-01 06:02:16,353 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-01 06:02:16,354 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-04-01 06:02:16,354 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2023-04-01 06:02:16,354 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2023-04-01 06:02:16,354 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2023-04-01 06:02:16,354 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2023-04-01 06:02:16,354 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2023-04-01 06:02:16,354 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2023-04-01 06:02:16,354 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2023-04-01 06:02:16,354 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2023-04-01 06:02:16,355 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2023-04-01 06:02:16,355 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2023-04-01 06:02:16,355 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__1 [2023-04-01 06:02:16,355 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__2 [2023-04-01 06:02:16,355 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__3 [2023-04-01 06:02:16,355 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2023-04-01 06:02:16,355 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2023-04-01 06:02:16,355 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2023-04-01 06:02:16,356 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2023-04-01 06:02:16,356 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2023-04-01 06:02:16,356 INFO L130 BoogieDeclarations]: Found specification of procedure test [2023-04-01 06:02:16,356 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2023-04-01 06:02:16,356 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2023-04-01 06:02:16,356 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2023-04-01 06:02:16,356 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2023-04-01 06:02:16,356 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-01 06:02:16,356 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2023-04-01 06:02:16,356 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2023-04-01 06:02:16,357 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2023-04-01 06:02:16,357 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2023-04-01 06:02:16,357 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2023-04-01 06:02:16,357 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2023-04-01 06:02:16,357 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2023-04-01 06:02:16,357 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2023-04-01 06:02:16,357 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2023-04-01 06:02:16,357 INFO L130 BoogieDeclarations]: Found specification of procedure free [2023-04-01 06:02:16,357 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2023-04-01 06:02:16,357 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-04-01 06:02:16,358 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-04-01 06:02:16,358 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-01 06:02:16,358 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-04-01 06:02:16,358 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2023-04-01 06:02:16,358 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-01 06:02:16,358 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2023-04-01 06:02:16,358 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2023-04-01 06:02:16,358 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-01 06:02:16,358 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2023-04-01 06:02:16,359 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2023-04-01 06:02:16,359 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2023-04-01 06:02:16,359 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-01 06:02:16,359 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-01 06:02:16,359 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-01 06:02:16,493 INFO L236 CfgBuilder]: Building ICFG [2023-04-01 06:02:16,495 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-01 06:02:17,061 INFO L277 CfgBuilder]: Performing block encoding [2023-04-01 06:02:17,191 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-01 06:02:17,191 INFO L302 CfgBuilder]: Removed 5 assume(true) statements. [2023-04-01 06:02:17,194 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 06:02:17 BoogieIcfgContainer [2023-04-01 06:02:17,194 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-01 06:02:17,197 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-01 06:02:17,197 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-01 06:02:17,201 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-01 06:02:17,201 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.04 06:02:15" (1/3) ... [2023-04-01 06:02:17,202 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d7ccc3c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 06:02:17, skipping insertion in model container [2023-04-01 06:02:17,202 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:02:16" (2/3) ... [2023-04-01 06:02:17,202 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d7ccc3c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 06:02:17, skipping insertion in model container [2023-04-01 06:02:17,202 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 06:02:17" (3/3) ... [2023-04-01 06:02:17,205 INFO L112 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product37.cil.c [2023-04-01 06:02:17,222 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-01 06:02:17,222 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-01 06:02:17,275 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-01 06:02:17,282 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;@423c9272, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-04-01 06:02:17,282 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-01 06:02:17,287 INFO L276 IsEmpty]: Start isEmpty. Operand has 147 states, 66 states have (on average 1.2575757575757576) internal successors, (83), 78 states have internal predecessors, (83), 48 states have call successors, (48), 30 states have call predecessors, (48), 30 states have return successors, (48), 44 states have call predecessors, (48), 48 states have call successors, (48) [2023-04-01 06:02:17,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-04-01 06:02:17,296 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:02:17,296 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 06:02:17,297 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 06:02:17,301 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:02:17,302 INFO L85 PathProgramCache]: Analyzing trace with hash -1790510587, now seen corresponding path program 1 times [2023-04-01 06:02:17,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:02:17,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866943983] [2023-04-01 06:02:17,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:02:17,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:02:17,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:02:17,554 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 06:02:17,554 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:02:17,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866943983] [2023-04-01 06:02:17,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [866943983] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 06:02:17,555 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 06:02:17,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-04-01 06:02:17,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651016527] [2023-04-01 06:02:17,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 06:02:17,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-04-01 06:02:17,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:02:17,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-04-01 06:02:17,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-04-01 06:02:17,599 INFO L87 Difference]: Start difference. First operand has 147 states, 66 states have (on average 1.2575757575757576) internal successors, (83), 78 states have internal predecessors, (83), 48 states have call successors, (48), 30 states have call predecessors, (48), 30 states have return successors, (48), 44 states have call predecessors, (48), 48 states have call successors, (48) 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 06:02:17,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:02:17,654 INFO L93 Difference]: Finished difference Result 224 states and 269 transitions. [2023-04-01 06:02:17,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-04-01 06:02:17,658 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 06:02:17,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:02:17,668 INFO L225 Difference]: With dead ends: 224 [2023-04-01 06:02:17,669 INFO L226 Difference]: Without dead ends: 114 [2023-04-01 06:02:17,673 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 06:02:17,676 INFO L413 NwaCegarLoop]: 122 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-01 06:02:17,677 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 122 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-01 06:02:17,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2023-04-01 06:02:17,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 114. [2023-04-01 06:02:17,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 57 states have (on average 1.2105263157894737) internal successors, (69), 66 states have internal predecessors, (69), 33 states have call successors, (33), 28 states have call predecessors, (33), 23 states have return successors, (28), 24 states have call predecessors, (28), 28 states have call successors, (28) [2023-04-01 06:02:17,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 130 transitions. [2023-04-01 06:02:17,715 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 130 transitions. Word has length 52 [2023-04-01 06:02:17,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:02:17,716 INFO L495 AbstractCegarLoop]: Abstraction has 114 states and 130 transitions. [2023-04-01 06:02:17,716 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 06:02:17,716 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 130 transitions. [2023-04-01 06:02:17,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-04-01 06:02:17,719 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:02:17,719 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 06:02:17,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-01 06:02:17,720 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 06:02:17,720 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:02:17,720 INFO L85 PathProgramCache]: Analyzing trace with hash 1271875750, now seen corresponding path program 1 times [2023-04-01 06:02:17,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:02:17,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402855588] [2023-04-01 06:02:17,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:02:17,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:02:17,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:02:17,852 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 06:02:17,853 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:02:17,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402855588] [2023-04-01 06:02:17,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1402855588] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 06:02:17,853 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 06:02:17,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-01 06:02:17,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948378265] [2023-04-01 06:02:17,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 06:02:17,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 06:02:17,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:02:17,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 06:02:17,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-01 06:02:17,858 INFO L87 Difference]: Start difference. First operand 114 states and 130 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 06:02:17,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:02:17,915 INFO L93 Difference]: Finished difference Result 182 states and 208 transitions. [2023-04-01 06:02:17,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 06:02:17,916 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 06:02:17,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:02:17,917 INFO L225 Difference]: With dead ends: 182 [2023-04-01 06:02:17,918 INFO L226 Difference]: Without dead ends: 106 [2023-04-01 06:02:17,918 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 06:02:17,920 INFO L413 NwaCegarLoop]: 102 mSDtfsCounter, 7 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 194 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-01 06:02:17,920 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 194 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-01 06:02:17,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2023-04-01 06:02:17,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2023-04-01 06:02:17,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 52 states have (on average 1.2115384615384615) internal successors, (63), 61 states have internal predecessors, (63), 30 states have call successors, (30), 27 states have call predecessors, (30), 23 states have return successors, (26), 22 states have call predecessors, (26), 26 states have call successors, (26) [2023-04-01 06:02:17,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 119 transitions. [2023-04-01 06:02:17,931 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 119 transitions. Word has length 53 [2023-04-01 06:02:17,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:02:17,931 INFO L495 AbstractCegarLoop]: Abstraction has 106 states and 119 transitions. [2023-04-01 06:02:17,932 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 06:02:17,932 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 119 transitions. [2023-04-01 06:02:17,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-04-01 06:02:17,933 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:02:17,933 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] [2023-04-01 06:02:17,934 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-01 06:02:17,934 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 06:02:17,934 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:02:17,934 INFO L85 PathProgramCache]: Analyzing trace with hash 2130684069, now seen corresponding path program 1 times [2023-04-01 06:02:17,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:02:17,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961969831] [2023-04-01 06:02:17,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:02:17,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:02:17,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:02:18,167 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 06:02:18,167 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:02:18,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961969831] [2023-04-01 06:02:18,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [961969831] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 06:02:18,168 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 06:02:18,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-01 06:02:18,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159598343] [2023-04-01 06:02:18,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 06:02:18,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-01 06:02:18,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:02:18,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-01 06:02:18,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-04-01 06:02:18,170 INFO L87 Difference]: Start difference. First operand 106 states and 119 transitions. Second operand has 7 states, 6 states have (on average 4.666666666666667) internal successors, (28), 6 states have internal predecessors, (28), 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 06:02:18,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:02:18,426 INFO L93 Difference]: Finished difference Result 187 states and 214 transitions. [2023-04-01 06:02:18,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-04-01 06:02:18,427 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.666666666666667) internal successors, (28), 6 states have internal predecessors, (28), 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 55 [2023-04-01 06:02:18,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:02:18,431 INFO L225 Difference]: With dead ends: 187 [2023-04-01 06:02:18,432 INFO L226 Difference]: Without dead ends: 106 [2023-04-01 06:02:18,437 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 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 06:02:18,439 INFO L413 NwaCegarLoop]: 97 mSDtfsCounter, 160 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 279 SdHoareTripleChecker+Invalid, 237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-01 06:02:18,440 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [161 Valid, 279 Invalid, 237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-01 06:02:18,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2023-04-01 06:02:18,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2023-04-01 06:02:18,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 52 states have (on average 1.1923076923076923) internal successors, (62), 60 states have internal predecessors, (62), 30 states have call successors, (30), 27 states have call predecessors, (30), 23 states have return successors, (26), 22 states have call predecessors, (26), 26 states have call successors, (26) [2023-04-01 06:02:18,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 118 transitions. [2023-04-01 06:02:18,456 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 118 transitions. Word has length 55 [2023-04-01 06:02:18,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:02:18,461 INFO L495 AbstractCegarLoop]: Abstraction has 106 states and 118 transitions. [2023-04-01 06:02:18,462 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.666666666666667) internal successors, (28), 6 states have internal predecessors, (28), 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 06:02:18,462 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 118 transitions. [2023-04-01 06:02:18,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-04-01 06:02:18,471 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:02:18,471 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] [2023-04-01 06:02:18,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-01 06:02:18,471 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 06:02:18,472 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:02:18,472 INFO L85 PathProgramCache]: Analyzing trace with hash 1474687158, now seen corresponding path program 1 times [2023-04-01 06:02:18,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:02:18,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837214354] [2023-04-01 06:02:18,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:02:18,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:02:18,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:02:18,672 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 06:02:18,672 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:02:18,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1837214354] [2023-04-01 06:02:18,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1837214354] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 06:02:18,673 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 06:02:18,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-01 06:02:18,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521652640] [2023-04-01 06:02:18,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 06:02:18,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 06:02:18,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:02:18,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 06:02:18,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-01 06:02:18,675 INFO L87 Difference]: Start difference. First operand 106 states and 118 transitions. Second operand has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 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 06:02:19,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:02:19,025 INFO L93 Difference]: Finished difference Result 275 states and 323 transitions. [2023-04-01 06:02:19,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-01 06:02:19,026 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 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 68 [2023-04-01 06:02:19,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:02:19,033 INFO L225 Difference]: With dead ends: 275 [2023-04-01 06:02:19,033 INFO L226 Difference]: Without dead ends: 194 [2023-04-01 06:02:19,035 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 06:02:19,044 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 141 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 305 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 425 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 305 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-01 06:02:19,045 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [147 Valid, 138 Invalid, 425 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 305 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-01 06:02:19,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2023-04-01 06:02:19,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 179. [2023-04-01 06:02:19,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 94 states have (on average 1.1702127659574468) internal successors, (110), 101 states have internal predecessors, (110), 43 states have call successors, (43), 40 states have call predecessors, (43), 41 states have return successors, (46), 42 states have call predecessors, (46), 39 states have call successors, (46) [2023-04-01 06:02:19,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 199 transitions. [2023-04-01 06:02:19,078 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 199 transitions. Word has length 68 [2023-04-01 06:02:19,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:02:19,079 INFO L495 AbstractCegarLoop]: Abstraction has 179 states and 199 transitions. [2023-04-01 06:02:19,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 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 06:02:19,079 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 199 transitions. [2023-04-01 06:02:19,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-04-01 06:02:19,081 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:02:19,082 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] [2023-04-01 06:02:19,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-04-01 06:02:19,082 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 06:02:19,082 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:02:19,082 INFO L85 PathProgramCache]: Analyzing trace with hash -898794726, now seen corresponding path program 1 times [2023-04-01 06:02:19,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:02:19,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571577852] [2023-04-01 06:02:19,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:02:19,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:02:19,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:02:19,492 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 06:02:19,493 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:02:19,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571577852] [2023-04-01 06:02:19,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571577852] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 06:02:19,493 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 06:02:19,493 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-04-01 06:02:19,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441765603] [2023-04-01 06:02:19,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 06:02:19,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-01 06:02:19,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:02:19,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-01 06:02:19,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2023-04-01 06:02:19,496 INFO L87 Difference]: Start difference. First operand 179 states and 199 transitions. Second operand has 12 states, 9 states have (on average 4.444444444444445) internal successors, (40), 9 states have internal predecessors, (40), 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 06:02:19,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:02:19,918 INFO L93 Difference]: Finished difference Result 475 states and 543 transitions. [2023-04-01 06:02:19,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-04-01 06:02:19,919 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 9 states have (on average 4.444444444444445) internal successors, (40), 9 states have internal predecessors, (40), 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 77 [2023-04-01 06:02:19,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:02:19,922 INFO L225 Difference]: With dead ends: 475 [2023-04-01 06:02:19,922 INFO L226 Difference]: Without dead ends: 321 [2023-04-01 06:02:19,923 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 06:02:19,923 INFO L413 NwaCegarLoop]: 155 mSDtfsCounter, 132 mSDsluCounter, 710 mSDsCounter, 0 mSdLazyCounter, 625 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 865 SdHoareTripleChecker+Invalid, 630 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 625 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-01 06:02:19,923 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [137 Valid, 865 Invalid, 630 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 625 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-01 06:02:19,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2023-04-01 06:02:19,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 309. [2023-04-01 06:02:19,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 309 states, 169 states have (on average 1.1775147928994083) internal successors, (199), 179 states have internal predecessors, (199), 72 states have call successors, (72), 67 states have call predecessors, (72), 67 states have return successors, (81), 71 states have call predecessors, (81), 68 states have call successors, (81) [2023-04-01 06:02:19,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 352 transitions. [2023-04-01 06:02:19,978 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 352 transitions. Word has length 77 [2023-04-01 06:02:19,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:02:19,979 INFO L495 AbstractCegarLoop]: Abstraction has 309 states and 352 transitions. [2023-04-01 06:02:19,980 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 9 states have (on average 4.444444444444445) internal successors, (40), 9 states have internal predecessors, (40), 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 06:02:19,980 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 352 transitions. [2023-04-01 06:02:19,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-04-01 06:02:19,981 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:02:19,982 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] [2023-04-01 06:02:19,982 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-04-01 06:02:19,982 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 06:02:19,982 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:02:19,982 INFO L85 PathProgramCache]: Analyzing trace with hash 1127423785, now seen corresponding path program 1 times [2023-04-01 06:02:19,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:02:19,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222287471] [2023-04-01 06:02:19,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:02:19,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:02:19,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:02:20,154 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 06:02:20,155 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:02:20,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1222287471] [2023-04-01 06:02:20,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1222287471] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 06:02:20,155 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 06:02:20,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-01 06:02:20,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880054365] [2023-04-01 06:02:20,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 06:02:20,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-01 06:02:20,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:02:20,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-01 06:02:20,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-04-01 06:02:20,157 INFO L87 Difference]: Start difference. First operand 309 states and 352 transitions. Second operand has 7 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 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 06:02:20,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:02:20,534 INFO L93 Difference]: Finished difference Result 617 states and 725 transitions. [2023-04-01 06:02:20,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-04-01 06:02:20,535 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 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 77 [2023-04-01 06:02:20,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:02:20,540 INFO L225 Difference]: With dead ends: 617 [2023-04-01 06:02:20,540 INFO L226 Difference]: Without dead ends: 333 [2023-04-01 06:02:20,541 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2023-04-01 06:02:20,542 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 110 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 409 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 216 SdHoareTripleChecker+Invalid, 487 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 409 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-01 06:02:20,542 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 216 Invalid, 487 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 409 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-01 06:02:20,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2023-04-01 06:02:20,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 306. [2023-04-01 06:02:20,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 306 states, 166 states have (on average 1.144578313253012) internal successors, (190), 176 states have internal predecessors, (190), 72 states have call successors, (72), 67 states have call predecessors, (72), 67 states have return successors, (81), 71 states have call predecessors, (81), 68 states have call successors, (81) [2023-04-01 06:02:20,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 343 transitions. [2023-04-01 06:02:20,582 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 343 transitions. Word has length 77 [2023-04-01 06:02:20,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:02:20,584 INFO L495 AbstractCegarLoop]: Abstraction has 306 states and 343 transitions. [2023-04-01 06:02:20,585 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 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 06:02:20,589 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 343 transitions. [2023-04-01 06:02:20,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-04-01 06:02:20,590 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:02:20,591 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] [2023-04-01 06:02:20,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-04-01 06:02:20,591 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 06:02:20,591 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:02:20,591 INFO L85 PathProgramCache]: Analyzing trace with hash 1493410588, now seen corresponding path program 1 times [2023-04-01 06:02:20,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:02:20,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704558802] [2023-04-01 06:02:20,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:02:20,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:02:20,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:02:20,898 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 06:02:20,898 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:02:20,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704558802] [2023-04-01 06:02:20,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1704558802] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 06:02:20,899 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 06:02:20,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-01 06:02:20,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900386838] [2023-04-01 06:02:20,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 06:02:20,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-01 06:02:20,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:02:20,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-01 06:02:20,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-04-01 06:02:20,901 INFO L87 Difference]: Start difference. First operand 306 states and 343 transitions. Second operand has 9 states, 7 states have (on average 5.857142857142857) internal successors, (41), 7 states have internal predecessors, (41), 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 06:02:21,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:02:21,497 INFO L93 Difference]: Finished difference Result 931 states and 1073 transitions. [2023-04-01 06:02:21,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-01 06:02:21,497 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 5.857142857142857) internal successors, (41), 7 states have internal predecessors, (41), 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 80 [2023-04-01 06:02:21,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:02:21,501 INFO L225 Difference]: With dead ends: 931 [2023-04-01 06:02:21,502 INFO L226 Difference]: Without dead ends: 707 [2023-04-01 06:02:21,503 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2023-04-01 06:02:21,503 INFO L413 NwaCegarLoop]: 122 mSDtfsCounter, 297 mSDsluCounter, 329 mSDsCounter, 0 mSdLazyCounter, 526 mSolverCounterSat, 136 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 317 SdHoareTripleChecker+Valid, 451 SdHoareTripleChecker+Invalid, 662 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 136 IncrementalHoareTripleChecker+Valid, 526 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-01 06:02:21,504 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [317 Valid, 451 Invalid, 662 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [136 Valid, 526 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-01 06:02:21,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 707 states. [2023-04-01 06:02:21,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 707 to 610. [2023-04-01 06:02:21,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 610 states, 336 states have (on average 1.1517857142857142) internal successors, (387), 354 states have internal predecessors, (387), 138 states have call successors, (138), 129 states have call predecessors, (138), 135 states have return successors, (166), 142 states have call predecessors, (166), 134 states have call successors, (166) [2023-04-01 06:02:21,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 610 states to 610 states and 691 transitions. [2023-04-01 06:02:21,577 INFO L78 Accepts]: Start accepts. Automaton has 610 states and 691 transitions. Word has length 80 [2023-04-01 06:02:21,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:02:21,577 INFO L495 AbstractCegarLoop]: Abstraction has 610 states and 691 transitions. [2023-04-01 06:02:21,577 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 5.857142857142857) internal successors, (41), 7 states have internal predecessors, (41), 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 06:02:21,578 INFO L276 IsEmpty]: Start isEmpty. Operand 610 states and 691 transitions. [2023-04-01 06:02:21,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-04-01 06:02:21,585 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:02:21,585 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:02:21,585 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-04-01 06:02:21,586 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 06:02:21,586 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:02:21,586 INFO L85 PathProgramCache]: Analyzing trace with hash -1971631009, now seen corresponding path program 1 times [2023-04-01 06:02:21,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:02:21,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646590441] [2023-04-01 06:02:21,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:02:21,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:02:21,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:02:21,797 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 18 proven. 6 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-04-01 06:02:21,797 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:02:21,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646590441] [2023-04-01 06:02:21,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [646590441] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 06:02:21,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1994808013] [2023-04-01 06:02:21,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:02:21,798 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 06:02:21,798 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 06:02:21,805 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 06:02:21,824 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 06:02:21,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:02:21,958 INFO L262 TraceCheckSpWp]: Trace formula consists of 499 conjuncts, 8 conjunts are in the unsatisfiable core [2023-04-01 06:02:21,966 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 06:02:22,186 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 22 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 06:02:22,186 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 06:02:22,613 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 18 proven. 6 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-04-01 06:02:22,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1994808013] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 06:02:22,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [673289905] [2023-04-01 06:02:22,643 INFO L159 IcfgInterpreter]: Started Sifa with 99 locations of interest [2023-04-01 06:02:22,643 INFO L166 IcfgInterpreter]: Building call graph [2023-04-01 06:02:22,648 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-01 06:02:22,653 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-01 06:02:22,654 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-01 06:02:22,899 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 31 for LOIs [2023-04-01 06:02:22,944 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 34 for LOIs [2023-04-01 06:02:23,178 INFO L197 IcfgInterpreter]: Interpreting procedure runTest with input of size 34 for LOIs [2023-04-01 06:02:23,243 INFO L197 IcfgInterpreter]: Interpreting procedure test with input of size 34 for LOIs [2023-04-01 06:02:26,705 INFO L197 IcfgInterpreter]: Interpreting procedure waterRise with input of size 46 for LOIs [2023-04-01 06:02:26,720 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 52 for LOIs [2023-04-01 06:02:27,342 INFO L197 IcfgInterpreter]: Interpreting procedure lowerWaterLevel with input of size 50 for LOIs [2023-04-01 06:02:27,353 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment with input of size 54 for LOIs [2023-04-01 06:02:27,737 INFO L197 IcfgInterpreter]: Interpreting procedure isMethaneAlarm with input of size 47 for LOIs [2023-04-01 06:02:27,849 INFO L197 IcfgInterpreter]: Interpreting procedure isMethaneLevelCritical with input of size 47 for LOIs [2023-04-01 06:02:27,855 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__highWaterSensor with input of size 40 for LOIs [2023-04-01 06:02:28,246 INFO L197 IcfgInterpreter]: Interpreting procedure isHighWaterLevel with input of size 24 for LOIs [2023-04-01 06:02:28,391 INFO L197 IcfgInterpreter]: Interpreting procedure isHighWaterSensorDry with input of size 24 for LOIs [2023-04-01 06:02:28,400 INFO L197 IcfgInterpreter]: Interpreting procedure activatePump with input of size 36 for LOIs [2023-04-01 06:02:28,406 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__base with input of size 35 for LOIs [2023-04-01 06:02:28,411 INFO L197 IcfgInterpreter]: Interpreting procedure setup with input of size 26 for LOIs [2023-04-01 06:02:28,416 INFO L197 IcfgInterpreter]: Interpreting procedure select_features with input of size 26 for LOIs [2023-04-01 06:02:28,419 INFO L197 IcfgInterpreter]: Interpreting procedure __utac_acc__Specification5_spec__3 with input of size 31 for LOIs [2023-04-01 06:02:28,657 INFO L197 IcfgInterpreter]: Interpreting procedure __automaton_fail with input of size 39 for LOIs [2023-04-01 06:02:28,662 INFO L197 IcfgInterpreter]: Interpreting procedure getWaterLevel with input of size 31 for LOIs [2023-04-01 06:02:28,667 INFO L197 IcfgInterpreter]: Interpreting procedure __utac_acc__Specification5_spec__2 with input of size 47 for LOIs [2023-04-01 06:02:28,750 INFO L197 IcfgInterpreter]: Interpreting procedure isPumpRunning with input of size 20 for LOIs [2023-04-01 06:02:28,752 INFO L197 IcfgInterpreter]: Interpreting procedure __utac_acc__Specification5_spec__1 with input of size 28 for LOIs [2023-04-01 06:02:28,755 INFO L197 IcfgInterpreter]: Interpreting procedure valid_product with input of size 26 for LOIs [2023-04-01 06:02:28,758 INFO L197 IcfgInterpreter]: Interpreting procedure select_helpers with input of size 26 for LOIs [2023-04-01 06:02:28,760 INFO L180 IcfgInterpreter]: Interpretation finished [2023-04-01 06:02:34,370 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '7709#(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 06:02:34,371 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-04-01 06:02:34,371 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 06:02:34,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 7] total 19 [2023-04-01 06:02:34,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089297921] [2023-04-01 06:02:34,371 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 06:02:34,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-04-01 06:02:34,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:02:34,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-04-01 06:02:34,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=514, Invalid=5338, Unknown=0, NotChecked=0, Total=5852 [2023-04-01 06:02:34,375 INFO L87 Difference]: Start difference. First operand 610 states and 691 transitions. Second operand has 19 states, 12 states have (on average 9.333333333333334) internal successors, (112), 15 states have internal predecessors, (112), 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 06:02:35,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:02:35,427 INFO L93 Difference]: Finished difference Result 1231 states and 1437 transitions. [2023-04-01 06:02:35,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-04-01 06:02:35,427 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 12 states have (on average 9.333333333333334) internal successors, (112), 15 states have internal predecessors, (112), 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 131 [2023-04-01 06:02:35,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:02:35,432 INFO L225 Difference]: With dead ends: 1231 [2023-04-01 06:02:35,432 INFO L226 Difference]: Without dead ends: 700 [2023-04-01 06:02:35,436 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 425 GetRequests, 316 SyntacticMatches, 17 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3951 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=678, Invalid=8064, Unknown=0, NotChecked=0, Total=8742 [2023-04-01 06:02:35,438 INFO L413 NwaCegarLoop]: 202 mSDtfsCounter, 290 mSDsluCounter, 1498 mSDsCounter, 0 mSdLazyCounter, 1318 mSolverCounterSat, 152 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 297 SdHoareTripleChecker+Valid, 1700 SdHoareTripleChecker+Invalid, 1470 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 152 IncrementalHoareTripleChecker+Valid, 1318 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-04-01 06:02:35,438 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [297 Valid, 1700 Invalid, 1470 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [152 Valid, 1318 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-04-01 06:02:35,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 700 states. [2023-04-01 06:02:35,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 700 to 589. [2023-04-01 06:02:35,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 589 states, 324 states have (on average 1.1450617283950617) internal successors, (371), 349 states have internal predecessors, (371), 135 states have call successors, (135), 128 states have call predecessors, (135), 129 states have return successors, (156), 129 states have call predecessors, (156), 131 states have call successors, (156) [2023-04-01 06:02:35,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 589 states to 589 states and 662 transitions. [2023-04-01 06:02:35,488 INFO L78 Accepts]: Start accepts. Automaton has 589 states and 662 transitions. Word has length 131 [2023-04-01 06:02:35,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:02:35,488 INFO L495 AbstractCegarLoop]: Abstraction has 589 states and 662 transitions. [2023-04-01 06:02:35,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 12 states have (on average 9.333333333333334) internal successors, (112), 15 states have internal predecessors, (112), 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 06:02:35,489 INFO L276 IsEmpty]: Start isEmpty. Operand 589 states and 662 transitions. [2023-04-01 06:02:35,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2023-04-01 06:02:35,491 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:02:35,491 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, 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 06:02:35,501 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 06:02:35,698 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 06:02:35,698 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 06:02:35,699 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:02:35,699 INFO L85 PathProgramCache]: Analyzing trace with hash 1197675286, now seen corresponding path program 1 times [2023-04-01 06:02:35,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:02:35,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655080707] [2023-04-01 06:02:35,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:02:35,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:02:35,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:02:35,908 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 38 proven. 2 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2023-04-01 06:02:35,909 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:02:35,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655080707] [2023-04-01 06:02:35,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [655080707] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 06:02:35,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1205259747] [2023-04-01 06:02:35,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:02:35,909 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 06:02:35,909 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 06:02:35,911 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 06:02:35,936 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 06:02:36,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:02:36,076 INFO L262 TraceCheckSpWp]: Trace formula consists of 619 conjuncts, 23 conjunts are in the unsatisfiable core [2023-04-01 06:02:36,099 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 06:02:36,179 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 82 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-04-01 06:02:36,180 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 06:02:36,515 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 38 proven. 3 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2023-04-01 06:02:36,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1205259747] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 06:02:36,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [708600689] [2023-04-01 06:02:36,518 INFO L159 IcfgInterpreter]: Started Sifa with 98 locations of interest [2023-04-01 06:02:36,519 INFO L166 IcfgInterpreter]: Building call graph [2023-04-01 06:02:36,519 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-01 06:02:36,519 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-01 06:02:36,520 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-01 06:02:36,618 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 31 for LOIs [2023-04-01 06:02:36,644 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 34 for LOIs [2023-04-01 06:02:36,741 INFO L197 IcfgInterpreter]: Interpreting procedure runTest with input of size 34 for LOIs [2023-04-01 06:02:36,776 INFO L197 IcfgInterpreter]: Interpreting procedure test with input of size 34 for LOIs [2023-04-01 06:02:38,947 INFO L197 IcfgInterpreter]: Interpreting procedure waterRise with input of size 58 for LOIs [2023-04-01 06:02:38,962 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 59 for LOIs [2023-04-01 06:02:39,355 INFO L197 IcfgInterpreter]: Interpreting procedure lowerWaterLevel with input of size 45 for LOIs [2023-04-01 06:02:39,362 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment with input of size 49 for LOIs [2023-04-01 06:02:39,464 INFO L197 IcfgInterpreter]: Interpreting procedure isMethaneAlarm with input of size 40 for LOIs [2023-04-01 06:02:39,496 INFO L197 IcfgInterpreter]: Interpreting procedure isMethaneLevelCritical with input of size 40 for LOIs [2023-04-01 06:02:39,500 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__highWaterSensor with input of size 26 for LOIs [2023-04-01 06:02:39,617 INFO L197 IcfgInterpreter]: Interpreting procedure isHighWaterLevel with input of size 24 for LOIs [2023-04-01 06:02:39,692 INFO L197 IcfgInterpreter]: Interpreting procedure isHighWaterSensorDry with input of size 24 for LOIs [2023-04-01 06:02:39,696 INFO L197 IcfgInterpreter]: Interpreting procedure activatePump with input of size 36 for LOIs [2023-04-01 06:02:39,699 INFO L197 IcfgInterpreter]: Interpreting procedure setup with input of size 26 for LOIs [2023-04-01 06:02:39,701 INFO L197 IcfgInterpreter]: Interpreting procedure select_features with input of size 26 for LOIs [2023-04-01 06:02:39,702 INFO L197 IcfgInterpreter]: Interpreting procedure __utac_acc__Specification5_spec__3 with input of size 43 for LOIs [2023-04-01 06:02:39,910 INFO L197 IcfgInterpreter]: Interpreting procedure __automaton_fail with input of size 50 for LOIs [2023-04-01 06:02:39,914 INFO L197 IcfgInterpreter]: Interpreting procedure getWaterLevel with input of size 43 for LOIs [2023-04-01 06:02:39,917 INFO L197 IcfgInterpreter]: Interpreting procedure __utac_acc__Specification5_spec__2 with input of size 55 for LOIs [2023-04-01 06:02:39,993 INFO L197 IcfgInterpreter]: Interpreting procedure isPumpRunning with input of size 24 for LOIs [2023-04-01 06:02:39,994 INFO L197 IcfgInterpreter]: Interpreting procedure __utac_acc__Specification5_spec__1 with input of size 28 for LOIs [2023-04-01 06:02:39,996 INFO L197 IcfgInterpreter]: Interpreting procedure valid_product with input of size 26 for LOIs [2023-04-01 06:02:39,998 INFO L197 IcfgInterpreter]: Interpreting procedure select_helpers with input of size 26 for LOIs [2023-04-01 06:02:40,000 INFO L180 IcfgInterpreter]: Interpretation finished [2023-04-01 06:02:45,810 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '11448#(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 06:02:45,810 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-04-01 06:02:45,810 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 06:02:45,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 13 [2023-04-01 06:02:45,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175638353] [2023-04-01 06:02:45,810 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 06:02:45,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-04-01 06:02:45,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:02:45,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-04-01 06:02:45,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=410, Invalid=4702, Unknown=0, NotChecked=0, Total=5112 [2023-04-01 06:02:45,814 INFO L87 Difference]: Start difference. First operand 589 states and 662 transitions. Second operand has 13 states, 9 states have (on average 9.88888888888889) internal successors, (89), 10 states have internal predecessors, (89), 3 states have call successors, (40), 3 states have call predecessors, (40), 7 states have return successors, (39), 6 states have call predecessors, (39), 3 states have call successors, (39) [2023-04-01 06:02:46,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:02:46,137 INFO L93 Difference]: Finished difference Result 1517 states and 1755 transitions. [2023-04-01 06:02:46,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-04-01 06:02:46,138 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 9 states have (on average 9.88888888888889) internal successors, (89), 10 states have internal predecessors, (89), 3 states have call successors, (40), 3 states have call predecessors, (40), 7 states have return successors, (39), 6 states have call predecessors, (39), 3 states have call successors, (39) Word has length 174 [2023-04-01 06:02:46,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:02:46,143 INFO L225 Difference]: With dead ends: 1517 [2023-04-01 06:02:46,143 INFO L226 Difference]: Without dead ends: 967 [2023-04-01 06:02:46,146 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 535 GetRequests, 457 SyntacticMatches, 5 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2192 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=433, Invalid=5117, Unknown=0, NotChecked=0, Total=5550 [2023-04-01 06:02:46,148 INFO L413 NwaCegarLoop]: 146 mSDtfsCounter, 43 mSDsluCounter, 893 mSDsCounter, 0 mSdLazyCounter, 405 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 1039 SdHoareTripleChecker+Invalid, 430 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 405 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-01 06:02:46,149 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 1039 Invalid, 430 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 405 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-01 06:02:46,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 967 states. [2023-04-01 06:02:46,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 967 to 789. [2023-04-01 06:02:46,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 789 states, 434 states have (on average 1.1267281105990783) internal successors, (489), 467 states have internal predecessors, (489), 175 states have call successors, (175), 168 states have call predecessors, (175), 179 states have return successors, (225), 175 states have call predecessors, (225), 171 states have call successors, (225) [2023-04-01 06:02:46,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 789 states to 789 states and 889 transitions. [2023-04-01 06:02:46,207 INFO L78 Accepts]: Start accepts. Automaton has 789 states and 889 transitions. Word has length 174 [2023-04-01 06:02:46,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:02:46,209 INFO L495 AbstractCegarLoop]: Abstraction has 789 states and 889 transitions. [2023-04-01 06:02:46,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 9 states have (on average 9.88888888888889) internal successors, (89), 10 states have internal predecessors, (89), 3 states have call successors, (40), 3 states have call predecessors, (40), 7 states have return successors, (39), 6 states have call predecessors, (39), 3 states have call successors, (39) [2023-04-01 06:02:46,209 INFO L276 IsEmpty]: Start isEmpty. Operand 789 states and 889 transitions. [2023-04-01 06:02:46,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2023-04-01 06:02:46,212 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:02:46,212 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:02:46,224 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-04-01 06:02:46,420 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 06:02:46,420 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 06:02:46,421 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:02:46,421 INFO L85 PathProgramCache]: Analyzing trace with hash 1812490175, now seen corresponding path program 1 times [2023-04-01 06:02:46,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:02:46,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240988183] [2023-04-01 06:02:46,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:02:46,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:02:46,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:02:47,252 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 48 proven. 17 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2023-04-01 06:02:47,252 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:02:47,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240988183] [2023-04-01 06:02:47,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [240988183] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 06:02:47,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [444713016] [2023-04-01 06:02:47,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:02:47,253 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 06:02:47,253 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 06:02:47,254 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 06:02:47,256 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 06:02:47,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:02:47,405 INFO L262 TraceCheckSpWp]: Trace formula consists of 633 conjuncts, 40 conjunts are in the unsatisfiable core [2023-04-01 06:02:47,414 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 06:02:47,821 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 43 proven. 74 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-04-01 06:02:47,822 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 06:02:49,392 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 59 proven. 8 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2023-04-01 06:02:49,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [444713016] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 06:02:49,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2114456180] [2023-04-01 06:02:49,395 INFO L159 IcfgInterpreter]: Started Sifa with 98 locations of interest [2023-04-01 06:02:49,395 INFO L166 IcfgInterpreter]: Building call graph [2023-04-01 06:02:49,396 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-01 06:02:49,396 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-01 06:02:49,396 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-01 06:02:49,529 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 31 for LOIs [2023-04-01 06:02:49,557 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 34 for LOIs [2023-04-01 06:02:49,663 INFO L197 IcfgInterpreter]: Interpreting procedure runTest with input of size 34 for LOIs [2023-04-01 06:02:49,696 INFO L197 IcfgInterpreter]: Interpreting procedure test with input of size 34 for LOIs [2023-04-01 06:02:51,984 INFO L197 IcfgInterpreter]: Interpreting procedure waterRise with input of size 46 for LOIs [2023-04-01 06:02:51,991 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 48 for LOIs [2023-04-01 06:02:52,355 INFO L197 IcfgInterpreter]: Interpreting procedure lowerWaterLevel with input of size 33 for LOIs [2023-04-01 06:02:52,359 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment with input of size 37 for LOIs [2023-04-01 06:02:52,424 INFO L197 IcfgInterpreter]: Interpreting procedure isMethaneAlarm with input of size 28 for LOIs [2023-04-01 06:02:52,443 INFO L197 IcfgInterpreter]: Interpreting procedure isMethaneLevelCritical with input of size 28 for LOIs [2023-04-01 06:02:52,445 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__highWaterSensor with input of size 26 for LOIs [2023-04-01 06:02:52,579 INFO L197 IcfgInterpreter]: Interpreting procedure isHighWaterLevel with input of size 24 for LOIs [2023-04-01 06:02:52,655 INFO L197 IcfgInterpreter]: Interpreting procedure isHighWaterSensorDry with input of size 24 for LOIs [2023-04-01 06:02:52,658 INFO L197 IcfgInterpreter]: Interpreting procedure activatePump with input of size 36 for LOIs [2023-04-01 06:02:52,661 INFO L197 IcfgInterpreter]: Interpreting procedure setup with input of size 26 for LOIs [2023-04-01 06:02:52,663 INFO L197 IcfgInterpreter]: Interpreting procedure select_features with input of size 26 for LOIs [2023-04-01 06:02:52,664 INFO L197 IcfgInterpreter]: Interpreting procedure __utac_acc__Specification5_spec__3 with input of size 43 for LOIs [2023-04-01 06:02:52,873 INFO L197 IcfgInterpreter]: Interpreting procedure __automaton_fail with input of size 50 for LOIs [2023-04-01 06:02:52,877 INFO L197 IcfgInterpreter]: Interpreting procedure getWaterLevel with input of size 43 for LOIs [2023-04-01 06:02:52,880 INFO L197 IcfgInterpreter]: Interpreting procedure __utac_acc__Specification5_spec__2 with input of size 43 for LOIs [2023-04-01 06:02:52,913 INFO L197 IcfgInterpreter]: Interpreting procedure isPumpRunning with input of size 24 for LOIs [2023-04-01 06:02:52,915 INFO L197 IcfgInterpreter]: Interpreting procedure __utac_acc__Specification5_spec__1 with input of size 28 for LOIs [2023-04-01 06:02:52,918 INFO L197 IcfgInterpreter]: Interpreting procedure valid_product with input of size 26 for LOIs [2023-04-01 06:02:52,920 INFO L197 IcfgInterpreter]: Interpreting procedure select_helpers with input of size 26 for LOIs [2023-04-01 06:02:52,922 INFO L180 IcfgInterpreter]: Interpretation finished [2023-04-01 06:02:59,264 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '15891#(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 06:02:59,264 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-04-01 06:02:59,264 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 06:02:59,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 17, 15] total 40 [2023-04-01 06:02:59,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061363190] [2023-04-01 06:02:59,264 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 06:02:59,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2023-04-01 06:02:59,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:02:59,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2023-04-01 06:02:59,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=746, Invalid=8760, Unknown=0, NotChecked=0, Total=9506 [2023-04-01 06:02:59,270 INFO L87 Difference]: Start difference. First operand 789 states and 889 transitions. Second operand has 40 states, 31 states have (on average 5.516129032258065) internal successors, (171), 31 states have internal predecessors, (171), 14 states have call successors, (74), 6 states have call predecessors, (74), 22 states have return successors, (76), 25 states have call predecessors, (76), 13 states have call successors, (76) [2023-04-01 06:03:01,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:03:01,520 INFO L93 Difference]: Finished difference Result 1585 states and 1853 transitions. [2023-04-01 06:03:01,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2023-04-01 06:03:01,521 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 31 states have (on average 5.516129032258065) internal successors, (171), 31 states have internal predecessors, (171), 14 states have call successors, (74), 6 states have call predecessors, (74), 22 states have return successors, (76), 25 states have call predecessors, (76), 13 states have call successors, (76) Word has length 179 [2023-04-01 06:03:01,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:03:01,523 INFO L225 Difference]: With dead ends: 1585 [2023-04-01 06:03:01,523 INFO L226 Difference]: Without dead ends: 0 [2023-04-01 06:03:01,531 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 622 GetRequests, 474 SyntacticMatches, 11 SemanticMatches, 137 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7825 ImplicationChecksByTransitivity, 7.6s TimeCoverageRelationStatistics Valid=1628, Invalid=17554, Unknown=0, NotChecked=0, Total=19182 [2023-04-01 06:03:01,532 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 693 mSDsluCounter, 432 mSDsCounter, 0 mSdLazyCounter, 2636 mSolverCounterSat, 711 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 694 SdHoareTripleChecker+Valid, 479 SdHoareTripleChecker+Invalid, 3347 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 711 IncrementalHoareTripleChecker+Valid, 2636 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-04-01 06:03:01,533 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [694 Valid, 479 Invalid, 3347 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [711 Valid, 2636 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-04-01 06:03:01,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-04-01 06:03:01,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-04-01 06:03:01,534 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 06:03:01,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-04-01 06:03:01,535 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 179 [2023-04-01 06:03:01,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:03:01,535 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-04-01 06:03:01,535 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 31 states have (on average 5.516129032258065) internal successors, (171), 31 states have internal predecessors, (171), 14 states have call successors, (74), 6 states have call predecessors, (74), 22 states have return successors, (76), 25 states have call predecessors, (76), 13 states have call successors, (76) [2023-04-01 06:03:01,535 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-04-01 06:03:01,535 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-04-01 06:03:01,539 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-04-01 06:03:01,551 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 06:03:01,748 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 06:03:01,750 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.